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1

El conflicto entre la demanda de flexibilidad laboral y la resistencia a la reforma del mercado de trabajo en España  

Microsoft Academic Search

La resistencia a las reformas laborales puede explicarse como un conflicto de intereses entre colectivos de individuos con distintas preferencias sobre la flexibilidad laboral. En este artículo presentamos evidencia empírica sobre cómo varían estas preferencias en función de las características socio-económicas de los ciudadanos en España. Documentamos que, a diferencia de lo que ocurre en los países de nuestro entorno,

Juan José Dolado; Florentino Felgueroso; Marcel Jansen

2010-01-01

2

COOPERACIÓN Y CONFLICTOS AMBIENTALES LOCALES. ENTRE EMPRESAS, COMUNIDADES, NUEVOS MOVIMIENTOS SOCIALES Y EL PAPEL DEL GOBIERNO. EL CASO DE CERRO DE SAN PEDRO (MÉXICO)  

Microsoft Academic Search

El objetivo de este trabajo es analizar las relaciones de cooperación y conflicto entre una compañia minera y las comunidades, los Nuevos Movimientos Sociales y los tres niveles de gobierno involucrados. La compañia Minera inició operaciones para una mina a cielo abierto de oro y plata con el apoyo de oficiales de los gobiernos locales, estatales y federal. Los habitantes

José G. Vargas-Hernández

2007-01-01

3

Conflicto, mediación comunitaria y creatividad social  

Microsoft Academic Search

Palabras clave: conflicto, des(orden), mediación comunitaria y creatividad social Resumen Cuando en occidente pensamos en el conflicto lo asociamos al desorden, al caos y al desequilibrio. Por lo que el abordaje al que optamos para dar respuesta al conflicto es establecer el orden y el equilibrio como respuesta adecuada para mantener las normas establecidas en una comunidad humana. A nuestro

Silvia Iannitelli Muscolo; Marta Llobet Estany

4

Impacto del conflicto colombiano en los periodistas  

Microsoft Academic Search

Introducción: Este artículo esboza las dificultades que presentan los periodistas colombianos en su trabajo y caracteriza el impacto del conflicto armado colombiano en su relación con este ejercicio profesional. Método: Los autores realizaron 70 entrevistas a algunos periodistas colombianos que cubren el conflicto. Para el análisis de las entrevistas se intentó entender la lógica de su conducta y cómo representan

Ismael Roldán; Diana Sofía Giraldo; Miguel Ángel Flórez

2008-01-01

5

Colombia: Los problemas de competitividad de un país en conflicto  

Microsoft Academic Search

La persistencia del conflicto interno en Colombia inhibe todos los elementos principales que contribuyen a la determinación de la competitividad de la economía nacional, que son los siguientes: (i) el monto de sus recursos productivos; (ii) la calidad y productividad de los mismos; (iii) la eficiencia con que operan sus mercados; (iv) el estado de su infraestructura; (v) la capacidad

Alberto Melo

2003-01-01

6

USO DE DROGAS ENTRE ESTUDIANTES DE MEDICINA, TEGUCIGALPA, HONDURAS  

Microsoft Academic Search

The use of drugs, in Honduras, involves 25% of college students. The most used substances include legal and recreational drugs, such as alcohol. This study aimed to identify the use of drugs and socio-demographic factors in a sample of 260 medical students. Results: Average age of 20 years old, unemployed and religious women, single, with no children. Alcohol was the

Juana Carolina Buchanan; Sandra Cristina Pillon

2008-01-01

7

OPORTUNIDADES DE EXPOSICIÓN AL USO DE DROGAS ENTRE ESTUDIANTES DE SECUNDARIA DE LA CIUDAD DE MÉXICO  

Microsoft Academic Search

SUMMARY Introduction. Our research took place following a prior work developed by James C. Anthony's research group, over the past ten years. In this group's research, the concept of exposure to opportunities to use drugs has been deemed as a useful element to understand the earliest stages of drug involvement, as well as the transition from using one drug such

Fernando A. Wagner; Catalina González-Forteza; Luciana E. Ramos-Lira; James C. Anthony

2003-01-01

8

Uso da maconha e suas representações sociais: estudo comparativo entre universitários  

Microsoft Academic Search

¶ ABSTRACT. The purpose of this research was to compare the social representations of university students who are getting their degree in the technological, health and law areas, on the use of marijuana. Sixty (60) university students took part in this re search, both sexes, aged from 22 to 30 years old. Semi-structured interviews were used and the collected material

Maria da Penha de L. Coutinho; Ludgleydson Fernandes de Araújo; Bernard Gontiès

2004-01-01

9

Uso del condón entre adolescentes mexicanos para la prevención de las infecciones de transmisión sexual  

Microsoft Academic Search

Objective. To investigate the current sexual behavior and condom use during the first sexual intercourse among adolescents, as well as variations and factors influencing condom use at first sexual intercourse. Material and Methods. The data source for this study was Mexico's National Health Survey 2000. Study subjects were male and female adolescents aged 12 to 19 years (n=16,258). Statistical analysis

Cecilia Gayet; Fátima Juárez; Laura A. Pedrosa; Carlos Magis

2003-01-01

10

Chômage et relations entre générations  

Microsoft Academic Search

[fre] Chômage et relations entre générations . Si l'on mesure, comme il est proposé dans cet article, l'intensité des rapports filiaux par l'interaction verbale (le nombre de sujets de discussion), les chômeurs n'ont avec leurs parents qu'un niveau de relations légèrement inférieur à celui des jeunes qui occupent un emploi, mais bien supérieur à celui des jeunes inactifs. Les événements

Olivier Galland

1997-01-01

11

Uso de imagens CBERS para avaliação da evolução da atividade de Carcinicultura em Sergipe entre 2005 e 2008  

Microsoft Academic Search

Brazilian coast, besides its great fauna and flora biodiversity, has favorable weather conditions to shrimp farming, an activity which has been increasing especially in the northeast of Brazil. The activity has caused the deforestation of mangrove areas, an important ecossystem to maintain the natural balance of coast biological diversity. The Brazilian Institute for the Environment and Renewable Natural Resources -

Raquel Barreto

12

EVALUACIÓN ERGONÓMICA DEL USO DE BOMBAS PORTATILES PARA FUMIGAR  

Microsoft Academic Search

Como primera actividad se observó al operario trabajando, anotando cualquier detalle que fuera relevante para la investigación, posteriormente se evaluó con el método “e-RULA” el uso de las mochilas para fumigar cuando se encuentran con el liquido para fumigar y cuando se encuentran vacías. Adicionalmente se aplicaron encuestas a 30 empleados campesinos (hombres) que laboran en ranchos y tienen por

Karla CeliaVázquez Arroyo; Hugo Cesar Ramos Herrera; Dulce María García Gómez; Juan Luis Hernández Arellano

2007-01-01

13

William Stanley Jevons: el uso de las probabilidades y el cálculo  

Microsoft Academic Search

En el capítulo tercero de la TPE, Jevons recurre al uso de las probabilidades como un método alternativo para analizar el intercambio de las mercancías. Jevons, decide no continuar con el uso de las probabilidades en los capítulos siguientes; su teoría se bifurca imperando el uso del cálculo diferencial. La explicación de esta bifurcación radica en la existencia de dos

John James Mora

2000-01-01

14

Vulnerabilidades e riscos: entre Geografia e Demografia  

Microsoft Academic Search

*** Entre as diferentes tendências de estudo dos riscos, temos inúmeras ciências que se utilizam da mesma categoria de diversas formas, ligadas a seus próprios pressupostos ontológicos, mas que pouco se comunicam. Este estudo objetiva aproximar duas dessas áreas disciplinares, que têm demonstrado preocupações semelhantes e que podem enriquecer-se mutuamente: Geografia e Demografia. A primeira, uma das mais antigas a

Eduardo Marandola Jr; Daniel Joseph Hogan

15

EntreWorld: Resources for Entrepreneurs  

NSDL National Science Digital Library

Looking to make that first million? Then EntreWorld, provided by the Ewing Marion Kauffman Foundation, is an excellent place to begin. The site is highlighted by four sections: starting your business, running your business, rapid growth, and supporting entrepreneurship. The first two sections allow users to select from an interactive search box of several topics, and retrieve annotated articles from various Internet sources. The fourth contains a potpourri of information including annotated pointers to other Internet resources in six major subject areas (pointers are also available from the Business Center area of each major section). The number of article pointers, and the annotation of each, make this site worth a visit.

2007-05-14

16

Phase III of the USO Solar Vector Magnetograph  

NASA Astrophysics Data System (ADS)

The solar vector magnetograph (SVM) is a modern imaging spectropolarimeter installed at Udaipur Solar Observatory (USO). Earlier phases saw the development of the instrument using off-the-shelf components with in-house software development. Subsequently, improvements were done in the opto-mechanical design of the sub-systems and the telescope tracking system. The third phase of the instrument development saw three major improvements: (1) installation of a web-camera-based telescope guiding system, developed in-house, (2) high-cadence spectropolarimetry using liquid-crystal variable retarders and a fast CCD camera, and (3) inclusion of the Na I D1 line for chromospheric observations, in addition to the regularly used photospheric Fe I 6302 Å line.

Gosain, S.; Venkatakrishnan, P.

17

Measurements of Ultra-Stable Oscillator (USO) Allan Deviations in Space  

NASA Technical Reports Server (NTRS)

Researchers have used data from the GRAIL mission to the Moon to make the first in-flight verification of ultra-stable oscillators (USOs) with Allan deviation below 10 13 for 1-to-100-second averaging times. USOs are flown in space to provide stable timing and/or navigation signals for a variety of different science and programmatic missions. The Gravity Recovery and Interior Laboratory (GRAIL) mission is flying twin spacecraft, each with its own USO and with a Ka-band crosslink used to measure range fluctuations. Data from this crosslink can be combined in such a way as to give the relative time offsets of the two spacecrafts USOs and to calculate the Allan deviation to describe the USOs combined performance while orbiting the Moon. Researchers find the first direct in-space Allan deviations below 10(exp -13) for 1-to-100-second averaging times comparable to pre-launch data, and better than measurements from ground tracking of an X-band carrier coherent with the USO. Fluctuations in Earth s atmosphere limit measurement performance in direct-to-Earth links. Inflight USO performance verification was also performed for GRAIL s parent mission, the Gravity Recovery and Climate Experiment (GRACE), using both Kband and Ka-band crosslinks.

Enzer, Daphna G.; Klipstein, William M.; Wang, Rabi T.; Dunn, Charles E.

2013-01-01

18

Produccion y Uso de Gliricidia: Manual de Campo (Gliricidia Production and Use).  

National Technical Information Service (NTIS)

Winrock International and the Nitrogen Fixing Tree Association (NFTA) have published NFTA's popular field manual Gliricidia Production and Use (Produccion y Uso de Gliricidia) in Spanish. Gliricidia is a versatile, fast-growing nitrogen fixing tropical tr...

J. Brewbaker P. Cheeke N. Glover C. Hughes D. Kass M. Kass B. Seibert J. Stewart J. Sumberg F. Wiersum

1989-01-01

19

Compilação de dados atômicos e moleculares do UV ao IV próximo para uso em síntese espectral  

NASA Astrophysics Data System (ADS)

Espectros sintéticos são utéis em uma grande variedade de aplicações, desde análise de abundâncias em espectros estelares de alta resolução ao estudo de populações estelares em espectros integrados. A confiabilidade de um espectro sintético depende do modelo de atmosfera adotado, do código de formação de linhas e da qualidade dos dados atômicos e moleculares que são determinantes no cálculo das opacidades da fotosfera. O nosso grupo no departamento de Astronomia no IAG tem utilizado espectros sintéticos há mais de 15 anos, em aplicações voltadas principalmente para a análise de abundâncias de estrelas G, K e M e populações estelares velhas. Ao longo desse tempo, as listas de linhas vieram sendo construídas e atualizadas continuamente, e alguns acréscimos recentes podem ser citados: Castilho (1999, átomos e moléculas no UV), Schiavon (1998, bandas moleculares de TiO) e Melendez (2001, átomos e moléculas no IV próximo). Com o intuito de calcular uma grade de espectros do UV ao IV próximo para uso no estudo de populações estelares velhas, se fazia necessário compilar e homogeneizar as diversas listas em apenas uma lista atômica e uma molecular. Nesse processo, a nova lista compilada foi correlacionada com outras bases de dados (NIST, Kurucz Database, O' Brian et al. 1991) para atualização dos parâmetros que caracterizam a transição atômica (comprimento de onda, log gf e potencial de excitação). Adicionalmente as constantes de interação C6 foram calculadas segundo a teoria de Anstee & O'Mara (1995) e artigos posteriores. As bandas moleculares de CH e CN foram recalculadas com o programa LIFBASE (Luque & Crosley 1999). Nesse poster estão detalhados os procedimentos citados acima, as comparações entre espectros calculados com as novas listas e espectros observados em alta resolução do Sol e de Arcturus, e uma análise do impacto decorrente da utilização de diferentes modelos de atmosfera no espectro sintético. Ao final, temos uma lista de linhas atômicas com mais de 24.000 linhas e uma lista molecular com as moléculas CN, CH, OH, NH, MgH, C2, TiO Gama, CO, FeH, adequadas ao estudo de estrelas G, K e M e populações estelares velhas.

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

2003-08-01

20

Previniendo el Uso de Drogas entre Ninos y Adolescentes: Una Guia Basada en Investigaciones (Preventing Drug Use among Children and Adolescents: A Research-Based Guide).  

ERIC Educational Resources Information Center

This question and answer guide provides an overview of the research on the origins and pathways of drug abuse, the basic principles derived from effective drug abuse prevention research, and the application of research results to the prevention of drug use among young people. The basic principles derived from drug abuse prevention research are…

Sloboda, Zili; David, Susan L.

21

International Space Station USOS Potable Water Dispenser Development  

NASA Technical Reports Server (NTRS)

The International Space Station (ISS) Russian Segment currently provides potable water dispensing capability for crewmember food and beverage rehydration. All ISS crewmembers rehydrate Russian and U.S. style food packages from this location. A new United States On-orbit Segment (USOS) Potable Water Dispenser (PWD) is under development. This unit will provide additional potable water dispensing capability to support an onorbit crew of six. The PWD is designed to provide incremental quantities of hot and ambient temperature potable water to U.S. style food packages. It will receive iodinated water from the Fuel Cell Water Bus in the U.S. Laboratory element. The unit will provide potable-quality water, including active removal of biocidal iodine prior to dispensing. A heater assembly contained within the unit will be able to supply up to 2.0 liters of hot water (65 to 93oC) every thirty minutes. This quantity will allow three to four crewmembers to rehydrate their food and beverages from this location during a single meal. The unit is designed to remain functional for up to ten years with replacement of limited life items such as filters. It will be the size of two stacked Shuttle Middeck lockers (approximately the size of two small suitcases) and integrated into a science payload rack in the U.S. Laboratory element. Providing potable-quality water at the proper temperature for food and beverage reconstitution is critical to maintaining crew health and well-being. The numerous engineering challenges as well as human factors and safety considerations during the concept, design, and prototyping are outlined in this paper.

Shaw, Laura A.; Barreda, Jose L.

2008-01-01

22

Parler en famille : les échanges entre parents et enfants  

Microsoft Academic Search

[fre] Parler en famille : les échanges entre parents et enfants . L'étendue des sujets abordés par les discussions entre parents et enfants parvenus à l'âge adulte est un indicateur de l'intensité de leurs rapports. Il montre que davantage que l'âge, l'installation en couple tend à amenuiser ces liens : une rupture plus nette se manifeste chez les jeunes femmes,

Olivier Galland

1997-01-01

23

Study on US/O3 mechanism in p-chlorophenol decomposition.  

PubMed

Study on the effects of sonolysis, ozonolysis and US/O3 system on the decomposition of p-chlorophenol in aqueous solutions indicated that in the cases of US/O3 system, individual ozonolysis and sonolysis, the decomposition rate of p-chlorophenol reached 78.78%, 56.20%, 2.79% after a 16-min reaction while its CODcr (chemical oxygen demand) removal rate was 97.02%, 62.17%, 3.67% after a 120-min reaction. The decomposition reaction of p-chlorophenol follows pseudo-first-order kinetics. The enhancement factors of p-chlorophenol and its COD(cr) under US/O3 system reached 63% and 237% respectively. The main intermediates during the decomposition include catechol, hydroquinone, p-benzoquinone, phenol, fumaric acid, maleic acid, oxalic acid and formic acid. The decomposition mechanism of p-chlorophenol was also discussed. PMID:15909343

Xu, Xian-wen; Xu, Xin-hua; Shi, Hui-xiang; Wang, Da-hui

2005-06-01

24

Performance Review of USOE's ESEA Title I Evaluation Technical Assistance Program.  

ERIC Educational Resources Information Center

The major focus of this review is on the performance of the United States Office of Education's (USOE) 10 Technical Assistance Centers (TACs). Information concerning the Technical Assistance Program, the Title I Evaluation and Reporting System (TIERS) and the methodology used for the review is also provided. Topics addressed include the selection…

Hope Associates, Inc., Washington, DC.

25

Un intento de comparación entre Estados Unidos y Europa  

Microsoft Academic Search

La comparación entre Estados Unidos y Europa puede hacerse de muy diversas maneras, pero, en cualquier caso, conviene definir lo que hay que entender por Europa. Al margen de conside raciones de orden histórico, conceptual e incluso antropológico, que nos llevarían al muy interesante debate ideológico actual, parece que, dentro de los límites a que esta contribución al Libro Marrón

Rafael Termes

26

La contradicción entre identidad vivida e identificación jurídico-política  

Microsoft Academic Search

Este artículo quiere llamar la atención de los antropólogos españoles sobre una contradicción implícita, por no decir sepultada, en los discursos sobre la identidad. Se trata de la contradicción entre la identidad como expresión de lo vivido y la identidad como quimera, y a la vez, estigma clasificatorio. Si bien, varias opiniones tratan de hacer pasar lo segundo por lo

Ignasi Terradas i Saborit

2004-01-01

27

A Concepção de Universo entre Alunos do Ensino Médio de São Paulo e suas Fontes de Aquisição  

NASA Astrophysics Data System (ADS)

Nesse trabalho procurou-se identificar por meio de um questionário as concepções de Universo, de espaço e tempo que sustentam a visão de mundo de um grupo de 270 estudantes de Ensino Médio, pertencentes a três escolas de São Paulo. As questões relacionadas aos conhecimentos prévios dos estudantes permitiram constatar que há pouco conhecimento acerca dos temas investigados, destacando-se que apenas 20% dos alunos foram capazes de relacionar as semanas com as fases da lua, enquanto 28% associaram as estações do ano à inclinação do eixo de rotação da Terra e 23% tinham noções das distâncias entre objetos celestes próximos da Terra. Enquanto 56% conseguiram relacionar o Big Bang com a origem do Universo, verificou-se que 37% reconheciam ano-luz como unidade de distância e 60% concebiam o Sol como uma estrela. No que se refere às fontes de aquisição que proporcionaram esses conhecimentos, apesar de 60% dos alunos indicarem a escola como principal fonte dos conhecimentos de Ast! ronomia, verificou-se claramente que para a maioria dos alunos seus conceitos ainda são inadequados, havendo necessidade de aprimoramento da abordagem desses conteúdos, pois apesar de popular, a Astronomia ainda é veiculada de maneira pouco esclarecedora e com imprecisões. Nesse contexto, são discutidas algumas possíveis contribuições que podem ser dadas para o ensino de Astronomia pelo uso das ferramentas computacionais nas escolas.

Araújo, M. A. A.; Elias, D. C. N.; Amaral, L. H.; Araújo, M. S. T.; Voelzke, M. R.

2006-08-01

28

International Space Station USOS Crew Quarters On-orbit vs Design Performance Comparison  

NASA Technical Reports Server (NTRS)

The International Space Station (ISS) United States Operational Segment (USOS) received the first two permanent ISS Crew Quarters (CQ) on Utility Logistics Flight Two (ULF2) in November 2008. Up to four CQs can be installed into the Node 2 element to increase the ISS crewmember size to six. The CQs provide private crewmember space with enhanced acoustic noise mitigation, integrated radiation reduction material, communication equipment, redundant electrical systems, and redundant caution and warning systems. The racksized CQ is a system with multiple crewmember restraints, adjustable lighting, controllable ventilation, and interfaces that allow each crewmember to personalize their CQ workspace. The deployment and initial operational checkout during integration of the ISS CQ to the Node is described. Additionally, the comparison of on-orbit to original design performance is outlined for the following key operational parameters: interior acoustic performance, air flow rate, temperature rise, and crewmember feedback on provisioning and restraint layout.

Broyan, James Lee, Jr.; Borrego, Melissa Ann; Bahr, Juergen F.

2008-01-01

29

International Space Station USOS Potable Water Dispenser On-Orbit Functionality vs Design  

NASA Technical Reports Server (NTRS)

The International Space Station (ISS) currently provides potable water dispensing for rehydrating crewmembers food and drinking packages with one system located in the United States On-orbit Segment (USOS) and one system in the Russian Segment. The USOS Potable Water Dispenser (PWD) was delivered to ISS on ULF2, Shuttle Mission STS-126, and was subsequently activated in November 2008. The PWD activation on ISS is capable of supporting an ISS crew of six but nominally supplies only half the crew. The PWD is designed to provide incremental quantities of hot and ambient temperature potable water to US style food packages. PWD receives iodinated water from the US Laboratory Fuel Cell Water Bus, which is fed from the Water Processing Assembly (WPA). The PWD removes the biocidal iodine to make the water potable prior to dispensing. A heater assembly contained within the unit supplies up to 2.0 liters of hot water (65 to 93oC) every thirty minutes. This quantity supports three to four crewmembers to rehydrate their food and beverages from this location during a single meal. The unit is designed to remain functional for up to ten years with replacement of limited life items such as filters. To date, the PWD on-orbit performance has been acceptable. Since activation of the PWD, there have been several differences between on-orbit functionality and expected performance of hardware design. The comparison of on-orbit functionality to performance of hardware design is outlined for the following key areas: microbiology, PWD to food package water leakage, no-dispense scenarios, under-dispense scenarios, and crewmember feedback on actual on-orbit use.

Toon, Katherine P.; Lovell, Randal W.

2009-01-01

30

¿Qué traen las personas al juego? Experimentos de campo sobre la cooperación en los recursos de uso común  

Microsoft Academic Search

El estudio de la acción colectiva requiere la comprensión de los incentivos individuales y de las restricciones institucionales que guían a las personas en la decisión de cooperar o no, en el grupo que enfrenta este dilema. El uso de ecosistemas locales por parte de grupos de individuos es sólo un ejemplo en el que la extracción individual incrementa el

Cárdenas Juan Camilo; Elinor Ostrom

2004-01-01

31

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

32

La valoraciòn econòmica de bienes y servicios ambientales como herramienta estrategica para la conservaciòn y uso sostenible de los ecosistemas  

Microsoft Academic Search

Resumen El trabajo corresponde a un estudio piloto hacia la implementación de una metodología que permita aproximar el valor monetario de los Bienes y Servicios Ambientales (BSA) ofertados por un ecosistema hídrico, caso “Ciénaga de la Caimanera, municipio de Coveñas, departamento de Sucre-Colombia”, como herramienta estratégica para incentivar la conservación y uso sostenible de los ecosistemas. Avanzar en procesos de

ADOLFO CARBAL HERRERA

2010-01-01

33

EL ANÁLISIS DE CITAS EN TRABAJOS DE INVESTIGADORES COMO MÉTODO PARA EL ESTUDIO DEL USO DE INFORMACIÓN EN BIBLIOTECAS  

Microsoft Academic Search

Resumen: Revisión bibliográfica sobre el análisis de citas como método para el estudio del uso y las necesidades de información por parte de los investigadores como usuarios de bibliotecas. Una vez comparados los estudios locales basados en las publicaciones de los usuarios potenciales de una biblioteca con los estudios de análisis de citas basados en la bibliografía circulante a nivel

Cristóbal Urbano Salido

2001-01-01

34

The rise of the hominids as an adaptive shift in fallback foods: Plant underground storage organs (USOs) and australopith origins  

Microsoft Academic Search

We propose that a key change in the evolution of hominids from the last common ancestor shared with chimpanzees was the substitution of plant underground storage organs (USOs) for herbaceous vegetation as fallback foods. Four kinds of evidence support this hypothesis: (1) dental and masticatory adaptations of hominids in comparison with the African apes; (2) changes in australopith dentition in

Greg Laden; Richard Wrangham

2005-01-01

35

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

36

Initial docking of ER-derived vesicles requires Uso1p and Ypt1p but is independent of SNARE proteins.  

PubMed Central

ER-to-Golgi transport in yeast may be reproduced in vitro with washed membranes, purified proteins (COPII, Uso1p and LMA1) and energy. COPII coated vesicles that have budded from the ER are freely diffusible but then dock to Golgi membranes upon the addition of Uso1p. LMA1 and Sec18p are required for vesicle fusion after Uso1p function. Here, we report that the docking reaction is sensitive to excess levels of Sec19p (GDI), a treatment that removes the GTPase, Ypt1p. Once docked, however, vesicle fusion is no longer sensitive to GDI. In vitro binding experiments demonstrate that the amount of Uso1p associated with membranes is reduced when incubated with GDI and correlates with the level of membrane-bound Ypt1p, suggesting that this GTPase regulates Uso1p binding to membranes. To determine the influence of SNARE proteins on the vesicle docking step, thermosensitive mutations in Sed5p, Bet1p, Bos1p and Sly1p that prevent ER-to-Golgi transport in vitro at restrictive temperatures were employed. These mutations do not interfere with Uso1p-mediated docking, but block membrane fusion. We propose that an initial vesicle docking event of ER-derived vesicles, termed tethering, depends on Uso1p and Ypt1p but is independent of SNARE proteins.

Cao, X; Ballew, N; Barlowe, C

1998-01-01

37

EL PARADIGMA DE LOS DELITOS DE TERRORISMO ENTRE DERECHO INTERNO Y DERECHO INTERNACIONAL  

Microsoft Academic Search

El artículo busca establecer un panorama entre los delitos de terrorismo desde su surgimiento hasta los días de hoy, teniendo en cuenta el desarrollo entre las aquí clasificadas fases evolutivas del fenómeno terrorista, llegando por fin a la última etapa, el terrorismo hoy que si conoce como, antes y después de los atentados de 11 de septiembre. Frente a esto

Ignácio Nunes Fernandes

2011-01-01

38

Depositación polínica anual en el Parque Nacional Pre-Delta, Entre Ríos, Argentina  

Microsoft Academic Search

Annual pollen deposition in the Pre-Delta National Park (Entre Ríos, Argentina). This work aims to analyze the seasonal pattern and the diversity of the Pre-Delta National Park vegetation (Entre Ríos, Argentina) as reflected by the deposited pollen along a year. Pollen has been monitored monthly with Tauber traps over one year (since August 2004 to July 2005). The pollen traps

Fabiana LATORRE; Marta A. CACCAVARI

39

La baisse des charges en France : Un bon compromis entre emploi et productivité  

Microsoft Academic Search

Nous proposons une maquette du marché du travail à tems complet sur le segment des moins qualifiés, tenant compte des interdépendances entre offre et demande de travail et dans laquelle les distributions de salaire et de productivité sont endogènes, résultat d’un jeu stratégique entre entreprises. La reproduction de la distribution observée des salaires nous permet d’identifier précisément les paramètres structurels

Jean-Olivier Hairault; François Langot

2005-01-01

40

Réforme de la Pac, accords au Gatt : quelles incidences sur les transferts financiers entre les Douze  

Microsoft Academic Search

[spa] Reforma de la Pac, acuerdos Gatt : cuáles son las incidencias sobre las transferencias financieres entre los Doce, . por Eve Fouilleux.. . La reforma de la Política agrícola común y los acuerdos sobre el aspecto agrícola del Gatt modifican el reparte de las ventajas financieras de adhesión al mercado común agrícola entre los Doce. El modelo Erpac de

Eve Fouilleux

1995-01-01

41

Non medical use and abuse of psychoactive substances among university students in health-related courses Experimentação, uso e abuso de substâncias psicoativas entre universitários da área da saúde  

Microsoft Academic Search

Objective: To understand the pattern of consumption of legal and illicit drugs among students of health-related courses and, if there are users among the participants in the survey, and find out whether they wish to participate in prevention and treatment programs. Methods: Quantitative and descriptive study performed using a self-applicable questionnaire. The study population consisted of students at a private

Clesio Nepomuceno; Ana Paula de Carvalho; Valéria Aparecida de Paula; Viviane Cristina de Souza; Dorisdaia Carvalho de Humerez

42

Positive Prevention: Successful Approaches To Preventing Youthful Drug and Alcohol Use [and] La Prevencion Positiva: Metodos que han tenido exito en la prevencion del uso de drogas y alcohol entre la juventud.  

ERIC Educational Resources Information Center

The United States has the highest rate of youthful drug abuse of any industrialized country in the world. There is a growing awareness that drug and alcohol use are closely connected to other problems such as teenage suicide, adolescent pregnancy, traffic fatalities, juvenile delinquency, poor school performance, runaways, and dropouts. Youthful…

American Association of School Administrators, Arlington, VA.

43

International Space Station USOS Crew Quarters Ventilation and Acoustic Design Implementation  

NASA Technical Reports Server (NTRS)

The International Space Station (ISS) United States Operational Segment (USOS) has four permanent rack sized ISS Crew Quarters (CQ) providing a private crewmember space. The CQ uses Node 2 cabin air for ventilation/thermal cooling, as opposed to conditioned ducted air from the ISS Temperature Humidity Control System or the ISS fluid cooling loop connections. Consequently, CQ can only increase the air flow rate to reduce the temperature delta between the cabin and the CQ interior. However, increasing airflow causes increased acoustic noise so efficient airflow distribution is an important design parameter. The CQ utilized a two fan push-pull configuration to ensure fresh air at the crewmember s head position and reduce acoustic exposure. The CQ interior needs to be below Noise Curve 40 (NC-40). The CQ ventilation ducts are open to the significantly louder Node 2 cabin aisle way which required significantly acoustic mitigation controls. The design implementation of the CQ ventilation system and acoustic mitigation are very inter-related and require consideration of crew comfort balanced with use of interior habitable volume, accommodation of fan failures, and possible crew uses that impact ventilation and acoustic performance. This paper illustrates the types of model analysis, assumptions, vehicle interactions, and trade-offs required for CQ ventilation and acoustics. Additionally, on-orbit ventilation system performance and initial crew feedback is presented. This approach is applicable to any private enclosed space that the crew will occupy.

Broyan, James Lee, Jr.

2009-01-01

44

Optomechanical and thermal design of the Multi-Application Solar Telescope for USO  

NASA Astrophysics Data System (ADS)

The Multi-Application Solar Telescope (MAST) is a 50 cm diameter class telescope to be installed on the Udaipur Solar Observatory's Island on the Lake Fatehsagar in Udaipur, India. It is dedicated to solar observation. The telescope is designed, manufactured, assembled and installed on-site by the belgian company AMOS SA for the Udaipur Solar Observatory (USO), an academic division of the Physical Research Laboratory (PRL) in India. Despite its limited size, the telescope is expected to be competitive with respect to worldwide large and costly projects thanks to its versatility regarding science goals and also thanks to its demanding optomechanical and thermal specification. This paper describes the optomechanical and thermal design of this telescope and presents solutions adopted by AMOS to meet the specific requirements. The optical configuration of the telescope is based on an afocal off-axis gregorian combination integrated on an Alt.-Az. mechanical mount, with a suite of flat folding mirrors to provide the required stationary collimated beam.

Denis, Stefan; Coucke, Pierre; Gabriel, Eric; Delrez, Christophe; Venkatakrishnan, Parameshwaran

2008-08-01

45

La problematica de la demarcacion entre ciencia y pseudociencia y sus implicaciones en la educacion cientifica  

NASA Astrophysics Data System (ADS)

En la sociedad prevalece una tendencia generalizada hacia la inclusion de creencias y practicas pseudocientificas. Esta investigacion responde a la necesidad de analizar como la proliferacion de las pseudociencias afecta la vision que tienen los estudiantes universitarios sobre las ciencias naturales. A tales efectos, la investigadora describe las concepciones epistemologicas que tienen los estudiantes sobre las ciencias y las pseudociencias e identifica los criterios de demarcacion, entre un area y otra, que se derivan de estas concepciones. De igual modo, esta identifica las creencias y practicas pseudocientificas de mayor arraigo entre los estudiantes, destacando, a su vez, la razon de ser de las mismas. Por ultimo, la investigadora analiza las implicaciones educativas de la problematica de la demarcacion entre ciencia y pseudociencia. La investigacion es de naturaleza mixta, enmarcada en los paradigmas empirico- analitico y cualitativo. El proceso investigativo se llevo a cabo mediante la administracion del cuestionario Criterios para la demarcacion entre ciencia y pseudociencia. La parte cualitativa estuvo enmarcada en el diseno de estudio de caso, recopilando informacion mediante entrevistas semiestructuradas en dos grupos focales. La poblacion de estudio estuvo constituida por estudiantes universitarios del nivel subgraduado de la Universidad Central de Bayamon. Los resultados del estudio reflejaron las concepciones erroneas de los estudiantes sobre la naturaleza de las ciencias y las pseudociencias. Con respecto a la demarcacion entre ciencia y pseudociencia, el criterio imperante entre los universitarios es el de la verificabilidad, considerando la aplicacion del metodo cientifico como el metodo para demostrar la veracidad de las teorias cientificas. Las creencias y practicas pseudocientificas no son muy frecuentes entre los universitarios. Estos atribuyen las mismas a la prevalencia de elementos supersticiosos y al engano a que es sometida la poblacion por quienes promueven estas practicas. A partir de los resultados, la investigadora concluye que la problematica sobre la demarcacion entre ciencia y pseudociencia esta influenciada por unos procesos de ensenanza enfocados en una vision distorsionada de la ciencia, producto de la no integracion de los aspectos filosoficos, historicos y sociales de la misma.

Jimenez Tolentino, Dinorah

46

Doenças cerebrovasculares em pacientes entre 15 e 40 anos: achados neuropatológicos em 47 casos  

Microsoft Academic Search

RESUMO - As doenças cerebrovasculares em pacientes entre 15 e 40 anos são pouco estudadas na literatura latino americana, principalmente no que tange aos achados neuropatológicos. Analisamos 47 encéfalos provenientes de necrópsias completas realizadas no período de 1987 a 1997 selecionados com base na faixa etária e alteração neuropatológica básica envolvendo fenômenos vasculares. Destes 47 casos analisados, 26 eram (55,3%)

Everton M. Maggio; Mário R. Montemór-Netto; Emerson L. Gasparetto; Jorge S. Reis-Filho; Fábio A. Tironi; Luiz F. Bleggi Torres

2001-01-01

47

BIOHAZARDS AMONG NURSING WORKERS RIESGO BIOLÓGICO ENTRE LOS TRABAJADORES DE ENFERMERÍA  

Microsoft Academic Search

RESUMO: RESUMO: RESUMO: RESUMO: RESUMO: Estudo de revisão bibliográfica que analisou as publicações em periódicos de enfermagem de 1998 a 2005, com o objetivo de caracterizar o perfil das publicações acerca do risco biológico entre trabalhadores de enfermagem. Identificou-se 59 publicações que priorizaram três focos: epidemiologia dos acidentes com material biológico, identificação do risco biológico e medidas preventivas. Predominaram estudos

Almeida ANG; Tipple AFV; Souza ACS

2009-01-01

48

Transferencias entre gobiernos y representación política: elementos empíricos de juicio de Argentina, Brasil y México  

Microsoft Academic Search

(Disponible en idioma inglés únicamente) En los países en desarrollo, las transferencias entre gobiernos desde el nivel central son una fuente importante de ingresos para la mayoría de los gobiernos subnacionales. Y es probable que su importancia aumente aún más, si se toman en cuenta las iniciativas de descentralización en América Latina y otras regiones. En este trabajo se investiga

Moritz Kraemer

1997-01-01

49

Entre 1979 et 1986, la France a perdu des parts de marché industriel  

Microsoft Academic Search

[spa] Entre 1979 y 1986 Francia perdió partes de mercado industrial. Las exportaciones francesas experimentan un cierto retraso con relación a la evolución de la demanda internacional - Francia pierde partes del mercado internacional desde 1979. Las exportaciones francesas siguen estando orientadas hacia los mismos socios que durante los años setenta mientras que los productos vendidos no corresponden totalmente a

Norbert Holcblat; Jean-Luc Tavernier

1989-01-01

50

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

51

Modification of the International Space Station USOS to Support Installation and Activation of the Node 3 Element  

NASA Technical Reports Server (NTRS)

The International Space Station (ISS) program is nearing an assembly complete configuration with the addition of the final resource node module in early 2010. The Node 3 module will provide critical functionality in support of permanent long duration crews aboard ISS. The new module will permanently house the regenerative Environment Control and Life Support Systems (ECLSS) and will also provide important habitability functions such as waste management and exercise facilities. The ISS program has selected the Port side of the Node 1 "Unity" module as the permanent location for Node 3 which will necessitate architecture changes to provide the required interfaces. The USOS ECLSS fluid and ventilation systems, Internal Thermal Control Systems, and Avionics Systems require significant modifications in order to support Node 3 interfaces at the Node 1 Port location since it was not initially designed for that configuration. This paper outlines the design, development, certification, and implementation of these changes in support of ISS assembly complete.

Link, Dwight E., Jr.; Williams, David E.

2009-01-01

52

Análise da Evolução e da Estrutura da Siderurgia Brasileira e do Uso de Carvão Vegetal no período de 1980 a 2006  

Microsoft Academic Search

O presente trabalho analisa a evolução e estrutura da siderurgia brasileira e do uso do carvão vegetal no período de 1980 a 2006. Os objetivos específicos são: 1) analisar a evolução da produção, consumo, exportação e importação dos principais produtos elaborados por esta indústria, separando os que usam carvão vegetal e os que usam carvão mineral; e 2) caracterizar a

Thais Hortense De Carvalho; Carlos Jose Caetano Bacha

2008-01-01

53

Stress, anxiété et dépression au travail. Existe-t-il des différences entre entreprises ?  

Microsoft Academic Search

En dépit du coût social très élevé du stress au travail, les déterminants des risques psycho-sociaux des salariés demeurent encore largement méconnus en France. Les études portant sur le stress professionnel sont généralement des études de cas, réalisées entreprise par entreprise, ce qui ne permet pas d'appréhender d'éventuels écarts entre les firmes. Le présent travail étudie les déterminants du stress,

Nicolas Gérard Vaillant; François-Charles Wolff

2010-01-01

54

Transfert radiatif entre une petite particule et un diélectrique: application au chauffage local  

NASA Astrophysics Data System (ADS)

nous montrons dans cette étude que le transfert radiatif entre une particule de taille nanométrique et un diélectrique petit être très important lorsque les distances mises en jeu sont petites devant la longueur d'onde caractéristique du rayonnement thermique. Ce transfert peut devenir dominant lorsque les matériaux utilisés sont polaires. Nous discuterons de la possibilité d'appliquer ces résultats au chauffage local dans les nano-structures.

Mulet, J.-P.; Joulain, K.; Carminati, R.; Greffet, J. J.

2002-06-01

55

La concurrence imparfaite entre les intermédiaires financiers est-elle toujours néfaste à la croissance économique ?  

Microsoft Academic Search

Les performances économiques de l'Allemagne et du Japon laissent supposer qu'une faible concurrence entre les intermédiaires financiers n'est pas nécessairement un obstacle à la croissance. Cet article présente un modèle de croissance endogène ne comportant un secteur d'intermédiation financière en concurrence imparfaite. Une forte concentration du secteur bancaire implique un marge d'intermédiation financière importante. Elle exerce un effet négatif sur

Jean-Bernard Chatelain; Bruno Amable

1996-01-01

56

Relation entre formulation et quelques propriétés mécaniques des bétons à hautes performances  

Microsoft Academic Search

Résumé  On s'intéresse dans cette publication aux relations entre composition et propriétés mécaniques (résistance en compression,\\u000a module élastique, retrait endogène) des bétons à hautes performances (BHP) dans la gamme 50–100 MPa. Les modèles proposés\\u000a pour chacune de ces propriétés s'appuient sur une analyse du béton durci en tant que matériau composite, permettant de passer\\u000a des propriétés du béton à celles de

F. de Larrard; R. Le Roy

1992-01-01

57

Les variations des revenus individuels entre périodes de chômage et d'emploi  

Microsoft Academic Search

[fre] Les personnes qui ont connu à la fois le chômage et l’emploi entre 1993 et 1995 ont eu un revenu individuel lors des mois de chômage inférieur de moitié environ à leur revenu lors des mois d’emploi. Cette estimation, tirée des trois premières vagues du Panel européen (1994-1996), retient un concept de revenu individuel assez large, incluant les revenus

Pascale Breuil-Genier

2001-01-01

58

Etude des relations entre photosynthese respiration, transpiration et nutrition minerale chez le ble  

NASA Astrophysics Data System (ADS)

La croissance du Blé Triticum aestivum a été étudiée en environnement contrôlé et fermé pendant une période de 70 jours. Les échanges gazeux (Photosynthèse, Respiration) hydriques (Transpiration) et la consommation en éléments minéraux (Azote, Phosphore, Potassium) ont été mesurés en continu. On présentera les relations dynamiques observées entre les différentes fonctions physiologiques, d'une part sous l'influence de la croissance et d'autre part en réponse à des modifications de l'environnement. L'influence de la teneur en CO2 pendant la croissance (teneur normale ou doublée) sera mise en évidence.

André, M.; Ducloux, H.; Richaud, C.; Massimino, D.; Daguenet, A.; Massimino, J.; Gerbaud, A.

59

Determinação de elementos próprios dos asteróides troianos: comparação entre as teorias semi-analítica e sintética  

NASA Astrophysics Data System (ADS)

Além do cálculo semi-analítico de elementos próprios dos asteróides Troianos (Beaugé & Roig 2001, Icarus 153, 391), recentemente foi apresentado um novo conjunto destes elementos próprios determinado através de uma teoria sintética (Knenezevic & Milani 2003, comunicação pessoal). As bases de dados contendo estas determinações estão disponiveis na pagina web do Asteroid Dynamical Site (http://hamilton.dm.unipi.it/cgi-bin/astdys/astibo). Nesta comunicação apresentamos os primeiros resultados de um estudo comparativo entre ambos conjuntos de elementos próprios, analisando suas vantagens e desvantagens, assim como os limites de precisão de cada conjunto. Mostramos que os elementos próprios sintéticos são mais precisos que os smi-analíticos para grandes amplitudes de libração do ângulo s = l-lJup, embora acontece o contrario para os corpos cuja amplitude de libração é muito pequena. Finalmente discutimos a influencia destes erros na determinação de familias de asteroides e da estrutura resonante em torno dos pontos Lagrangeanos L4 e L5.

Roig, F.; Beaugé, C.

2003-08-01

60

p115 is a general vesicular transport factor related to the yeast endoplasmic reticulum to Golgi transport factor Uso1p.  

PubMed

A recently discovered vesicular transport factor, termed p115, is required along with N-ethylmaleimide-sensitive fusion protein (NSF) and soluble NSF attachment proteins for in vitro Golgi transport. p115 is a peripheral membrane protein found predominantly on the Golgi. Biochemical and electron microscopic analyses indicate that p115 is an elongated homodimer with two globular "heads" and an extended "tail" reminiscent of myosin II. We have cloned and sequenced cDNAs for bovine and rat p115. The predicted translation products are 90% identical, and each can be divided into three domains. The predicted 108-kDa bovine protein consists of an N-terminal 73-kDa globular domain followed by a 29-kDa coiled-coil dimerization domain, a linker segment of 4 kDa, and a highly acidic domain of 3 kDa. p115 is related to Uso1p, a protein required for endoplasmic reticulum to Golgi vesicular transport in Saccharomyces cerevisiae, which has a similar "head-coil-acid" domain structure. The p115 and Uso1p heads are similar in size, have approximately 25% sequence identity, and possess two highly homologous regions (62% and 60% identity over 34 and 53 residues, respectively). There is a third region of homology (50% identity over 28 residues) between the coiled-coil and acidic domains. Although the acidic nature of the p115 and Uso1p C termini is conserved, the primary sequence is not. We discuss these results in light of the proposed function of p115 in membrane targeting and/or fusion. PMID:7831323

Sapperstein, S K; Walter, D M; Grosvenor, A R; Heuser, J E; Waters, M G

1995-01-17

61

Modelización de escenarios de cambio potencial en la vegetación y el uso de suelo en la Sierra Madre Oriental de San Luis Potosí, México  

Microsoft Academic Search

ResumenResumen Se realizó la modelación de la dinámica de cambio en el uso de suelo y la vegetación en la región de la Sierra Madre Oriental del estado de San Luis Potosí, considerado un sitio de importancia para la conservación en México por su alta biodiversidad. Para determinar la variación espacial se analizaron imágenes de satélite en un período de

Francisco Javier Sahagún-Sánchez; José Luis Flores Flores; Leonardo Chapa Vargas; Humberto Reyes-Hernández

2011-01-01

62

Modelización de escenarios de cambio potencial en la vegetación y el uso de suelo en la Sierra Madre Oriental de San Luis Potosí, México  

Microsoft Academic Search

Resumen:Se realizó la modelación de la dinámica de cambio en el uso de suelo y la vegetación en la región de la Sierra Madre Oriental del estado de San Luis Potosí, considerado un sitio de importancia para la conservación en México por su alta biodiversidad. Para determinar la variación espacial se analizaron imágenes de satélite en un período de 16

Francisco Javier Sahagún-Sánchez; José Luis Flores Flores; Leonardo Chapa Vargas; Humberto Reyes-Hernández

2011-01-01

63

State of Conservation of the Native Forests in Entre Ríos (Argentina) and Changes in Land Use  

NASA Astrophysics Data System (ADS)

The native forest area of Entre Ríos province (Argentina) is associated with a constant change in land use, with an increase in recent years in agricultural use, especially for soybean crop. In addition, since its inadequate management has triggered degradation processes of the natural forest structure, the implementation of strategies for the restoration and conservation of native forests has become a priority. The aim of this study was to diagnose the conservation state of the native forest in the basin of the Estacas Stream (Entre Ríos, Argentina) after the change in land use, to help design guidelines for the restoration and sustainable management of these ecosystems. The field study was conducted in October 2010, in a representative area of the native forest of 73,000 ha. Using Landsat 5-TM images (INPE), environments were separated by manual vectorization, identifying and classifying native forests and other lands (agricultural, urban). Using a field exploratory survey (58 geo-referenced sampling points), we developed patterns corresponding to the different types of forests, contrasting this information with the digital data of the images. The native forests were classified according to type (high/low forest, open/closed forest, savanna), successional stage (climax, successional or regeneration forest) and degree of disturbance (weed growth, erosion, fire), and their frequency determined. Each classification was assessed by a contingency matrix, and global reliability index and the Kappa index. The information obtained generated a classification map of native forests in the basin scale. We found that the native forest covered an area of 42,726.91 ha, accounting for 58.52% of the total basin area, and that the rest corresponded to other land uses. The most frequent native forests (59.09%) were climax forest, but accounted for only 8.2% of the basin area. Within this group, the most important were the low and open forest, with Prosopis affinis and Prosopis nigra as the dominant tree species. Although the successional forests were not the most frequent, they occupied the greater area of the basin (30.8%), being low and open forest the dominant type. The regeneration forest dominated by Acacia caven, represents 18.71% of the basin area. Weed shrub species growth was the most frequent disturbance. We determined a severe weed shrub growth in 41% of the sampling points, with Baccharis punctulata and Eupatorium buniifolium as the dominant species. According to state of conservation of native forest, 7,797.03 ha have a high conservation value, while 21,272.17 ha and 13,657.71 ha have a medium and low conservation value, respectively.

Sabattini, R. A.; Sione, S. M.; Ledesma, S. G.; Sabattini, J. A.; Wilson, M. G.

2012-04-01

64

On acoplamento mecânico entre a antena e o transdutor no detector de ondas gravitacionais Mario Schenberg  

NASA Astrophysics Data System (ADS)

O detector de ondas gravitacionais MARIO SCHENBERG consistirá de uma massa esférica de cobre-alumínio de 1150kg resfriada a 4K, sobre a qual serão instalados 6 transdutores de nióbio. Com estes trandutores pretende-se converter um possível sinal de onda gravitacional detectado em sinal elétrico, para tanto é necessário que o acoplamento mecânico entre os transdutores e a massa ressonante seja o maior possível. Isto significa que o transdutor deve ser ressonante na mesma freqüência que a antena (aproximadamente 3200Hz). Neste trabalho foi desenvolvida uma geometria para a estrutura mecânica do trandutor. Isto foi feito criando-se modelos em elementos finitos usando-se o "software" MSC/Nastran. Estes modelos criados foram analisados estaticamente (cálculo de tensões) e dinamicamente (cálculo das freqüências de ressonâncias e seus respectivos modos normais) de maneira a se obter o primeiro modo normal do transdutor em 3200Hz. A partir destes cálculos escolheu-se a melhor geometria para o transdutor. Os próximos passos do trabalho serão: usinar este transdutor em uma barra de nióbio e testá-lo à temperatura ambiente e à baixa temperatura. Após isto, pretende-se testá-lo na própria antena resfriada.

Melo, J. L.; Aguiar, O. D.; Velloso, W. F., Jr.; Lucena, A. U.

2003-08-01

65

Natural co-occurrence of fungi and mycotoxins in poultry feeds from Entre Ríos, Argentina.  

PubMed

A total of 120 pelleted poultry feed samples from Entre Ríos Province, Argentina, were evaluated. The aims were to investigate (1) the presence of relevant toxigenic fungi, as well as to determine the ability to produce aflatoxins (AFs) by Aspergillus section Flavi isolated strains; and (2) the natural co-occurrence of AFs, fumonisins (FBs), gliotoxin, diacetoxyscirpenol (DAS), HT-2 and T-2 toxin by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Total fungal counts were below the established value (1 × 10(4) CFU g(-1)). Aspergillus flavus and A. parasiticus were the only aflatoxigenic species isolated. Co-occurrence of fumonisin B1 (FB1), HT-2 and T-2 toxin was detected in 100% of the feeds, with mean levels from 4502 to 5813; 6.7 to 21.6 and 19.6 to 30.3 µg kg(-1), respectively. A large number of starter samples were co-contaminated with aflatoxin B1 (AFB1), FB1, HT-2 and T-2 toxins. Gliotoxin and DAS were not found in this survey. PMID:24779900

Monge, M P; Dalcero, A M; Magnoli, C E; Chiacchiera, S M

2013-09-01

66

Interseções entre cultura midiática, cibercultura e gamecultura: o Ragnarök como processo sociocomunicacional e mediador da conscientização ambiental  

Microsoft Academic Search

Os games on-line são estudados na atualidade como mídias interativas complexas. Neste artigo compreendemos os games on-line como resultados das relações entre a cultura midiática, cibercultura e gamecultura. Propomos demonstrar que sua finalidade está na socialização dos jogadores, nos \\

Igor Ramady; Lira de SOUSA; Henrique Paiva de MAGALHÃES

67

Acuerdos entre el gobierno central y los departamentos: una propuesta para aumentar la eficiencia del gasto público  

Microsoft Academic Search

El objetivo de este trabajo es proponer un instrumento para el seguimiento de la eficiencia del gasto público. El instrumento muestra que el gobierno central se puede apoyar en las administraciones departamentales con el fin de medir los productos del gasto. La idea central de la propuesta es que los objetivos de productividad acordados entre el nivel nacional y el

Isaac de León-Beltrán; Diego Jaramillo

2006-01-01

68

Una Metodología para Ajustar y Compensar las Diferencias de Riesgo entre el Sistema Público y Privado de Salud en Chile  

Microsoft Academic Search

En el marco conceptual de seguros de salud y ajuste de riesgo y a la luz de la experiencia internacional en Fondos de Compensación de Riesgos, este documento explora el problema del «descreme» que afecta al sistema de seguros Chileno. Se presenta una metodología para estimar diferencias de riesgo entre el sector público y privado de salud en Chile y

Verónica Vargas; Camilo Cid; Mauricio Matus; Iris Delgado; José Miguel Sánchez; Beatriz Heyermann; José Angulo

69

Occurrence of alternariol and alternariol monomethyl ether in beverages from the Entre Rios Province market, Argentina.  

PubMed

One hundred and eighty five samples of red, white and rosé wines and different juices purchased in Entre Rios, Argentina, were analyzed for the Alternaria mycotoxins alternariol (AOH) and alternariol methyl ether (AME). White wines were analyzed after removal of alcohol by a nitrogen stream and concentrated. AOH in red wines was cleaned up by solid-phase extraction columns in series (octadecyl and amino propyl modified silica) and AME quantified directly on the sample. The juices were filtered and concentrated, and then all sample extracts were quantified by high performance liquid chromatography with photodiode array detector that allows confirmation through UV spectra. Method validation revealed a good sensitivity with adequate LOD and LOQ for AME and less sensitivity for AOH (i.e. white wine: AME 0.8 and 1.4 ng/mL, AOH 2 and 3.3 ng/mL; red wine: AME 0.1 and 0.2 ng/mL, AOH 4.5 and 7.5 ng/mL; apple juice: AME 1.7 and 2.8 ng/mL, AOH 5 and 9 ng/mL; other juices: AME 2.0 and 3.1 ng/mL, AOH 6 and 10 ng/mL). Recoveries in all cases were greater than 80 %. Four of 53 white wine samples were contaminated with AOH with a maximum level of 18 ng/mL, 6 of 56 samples of red wine had a maximum of 13 ng/mL, and 3 of 68 samples of juices had traces of AOH. AME was less frequently detected than AOH, and the LOD and LOQ for AME are smaller than for AOH. Only three samples of white wine and one of red wine were contaminated, but in only one white wine sample (AME 225 ng/mL) did the toxin level exceed the LOQ. PMID:23334721

Broggi, Leticia; Reynoso, Cora; Resnik, Silvia; Martinez, Fernanda; Drunday, Vanesa; Bernal, Angela Romero

2013-02-01

70

Analyse des interactions energetiques entre un arena et son systeme de refrigeration  

NASA Astrophysics Data System (ADS)

La presente these s'inscrit dans le cadre d'un projet strategique sur les arenas finance par le CRSNG (Conseil de Recherche en Sciences Naturelles et en Genie du Canada) qui a pour but principal le developpement d'un outil numerique capable d'estimer et d'optimiser la consommation d'energie dans les arenas et curlings. Notre travail s'inscrit comme une suite a un travail deja realise par DAOUD et coll. (2006, 2007) qui a developpe un modele 3D (AIM) en regime transitoire de l'arena Camilien Houde a Montreal et qui calcule les flux de chaleur a travers l'enveloppe du batiment ainsi que les distributions de temperatures et d'humidite durant une annee meteorologique typique. En particulier, il calcule les flux de chaleur a travers la couche de glace dus a la convection, la radiation et la condensation. Dans un premier temps nous avons developpe un modele de la structure sous la glace (BIM) qui tient compte de sa geometrie 3D, des differentes couches, de l'effet transitoire, des gains de chaleur du sol en dessous et autour de l'arena etudie ainsi que de la temperature d'entree de la saumure dans la dalle de beton. Par la suite le BIM a ete couple le AIM. Dans la deuxieme etape, nous avons developpe un modele du systeme de refrigeration (REFSYS) en regime quasi-permanent pour l'arena etudie sur la base d'une combinaison de relations thermodynamiques, de correlations de transfert de chaleur et de relations elaborees a partir de donnees disponibles dans le catalogue du manufacturier. Enfin le couplage final entre l'AIM +BIM et le REFSYS a ete effectue sous l'interface du logiciel TRNSYS. Plusieurs etudes parametriques on ete entreprises pour evaluer les effets du climat, de la temperature de la saumure, de l'epaisseur de la glace, etc. sur la consommation energetique de l'arena. Aussi, quelques strategies pour diminuer cette consommation ont ete etudiees. Le considerable potentiel de recuperation de chaleur au niveau des condenseurs qui peut reduire l'energie requise par le systeme de ventilation de l'arena a ete mis en evidence. Mots cles. Arena, Systeme de refrigeration, Consommation d'energie, Efficacite energetique, Conduction au sol, Performance annuelle.

Seghouani, Lotfi

71

Patrones locales de cambio globales: efectos de la emigración en el cambio de uso de suelo en el centro de México. El caso de la cuenca del Lago de Cuitzeo, México  

Microsoft Academic Search

En la actualidad existen notables desplazamientos de personas, ocasionados por la pobreza, las guerras, la degradación del medio ambiente, etc., en el planeta más de 125 millones de seres humanos viven fuera de sus países de origen. En este trabajo se describen las implicaciones de la migración sobre el cambio de cobertura y uso del terreno. El caso de estudio

Erna López; Gerardo Bocco

2007-01-01

72

PERFIL FARMACOTERAPÊUTICO DE PACIENTES EM USO DE ANTIMICROBIANOS EM HOSPITAL PRIVADO, EM FORTALEZA - CE Pharmacotherapeutic profile of patients in use of antimicrobials at a private hospital, in Fortaleza - CE  

Microsoft Academic Search

RESUMO Apesar da disponibilidade de antimicrobianos eficazes, os germes continuam ganhando a batalha nas doenças infecciosas, acarretando mortes e morbidade. Uma das causas desta situação consiste no surgimento e disseminação de resistência microbiana, que tende a aumentar com o uso indiscriminado de antimicrobianos. Este sério problema afeta a saúde individual e coletiva. O presente trabalho propôs-se a conhecer o perfil

Fernanda Borges França

73

So That All Indian Children Will Have Equal Educational Opportunity, Volume 1. USOE/BIA Study of the Impact of Federal Funds on Local Education Agencies Enrolling Indian Children.  

ERIC Educational Resources Information Center

The House Committee on Appropriations requested the U.S. Office of Education (USOE) and the Bureau of Indian Affairs (BIA) to review the: Impact-Aid Program, Johnson-O'Malley Program, Indian Education Act, and Elementary and Secondary Education Act Title I. ACKCO, Inc. a private Indian-owned professional service firm, was contracted to examine…

ACKCO, Inc., Boulder, CO.

75

The effect of coordinated water on the connectivity of uranium(IV) sulfate x-hydrate: [U(SO4)2(H2O)5]·H2O and [U(SO4)2(H2O)6]·2H2O, and a comparison with other known structures.  

PubMed

Two new solid-state uranium(IV) sulfate x-hydrate complexes (where x is the total number of coordinated plus solvent waters), namely catena-poly[[pentaaquauranium(IV)]-di-?-sulfato-?(4)O:O'] monohydrate], {[U(SO4)2(H2O)5]·H2O}n, and hexaaquabis(sulfato-?(2)O,O')uranium(IV) dihydrate, [U(SO4)2(H2O)6]·2H2O, have been synthesized, structurally characterized by single-crystal X-ray diffraction and analyzed by vibrational (IR and Raman) spectroscopy. By comparing these structures with those of four other known uranium(IV) sulfate x-hydrates, the effect of additional coordinated water molecules on their structures has been elucidated. As the number of coordinated water molecules increases, the sulfate bonds are displaced, thus changing the binding mode of the sulfate ligands to the uranium centre. As a result, uranium(IV) sulfate x-hydrate changes from being fully crosslinked in three dimensions in the anhydrous compound, through sheet and chain linking in the tetra- and hexahydrates, to fully unlinked molecules in the octa- and nonahydrates. It can be concluded that coordinated waters play an important role in determining the structure and connectivity of U(IV) sulfate complexes. PMID:24992121

Burns, Alexander D; Patrick, Brian O; Lam, Anita E; Dreisinger, David

2014-07-15

76

Study of the Relation Between Soil Use, Vegetation Coverage, and the Discharge of Sediments from Artificial Reservoirs Using MSS/LANDSAT Images. Example: The Tres Marias Reservoir and Its Supply Basin (Estudo DA Relacao Entre USO Do Solo, Cobertura Vegetal E Descarga de Sedimentos de Reservatorios Artificiais, Atraves E Imagens MSS/LANDSAT. Exemplo: Reservatorio de Tres Marias E Sua Bacia Abastecedora (Mg)).  

National Technical Information Service (NTIS)

The land use and types of vegetation in the region of the upper Sao Francisco River, Brazil, are identified. This region comprises the supply basin of the Tres Marias reservoir. Imagery from channels 5 and 7 of the LANDSAT multispectral band scanner durin...

N. Dejesusparada T. M. Sausen

1981-01-01

77

La racialisation de la sante publique aux Etats-Unis : entre pouvoir sur la vie et droit de laisser mourir.  

PubMed

RSUM Aux États-Unis, une intensification de l'usage de la race en santé publique a récemment été notée ; une idée qui est pourtant controversée dans les sciences. La race a été vue dans ce contexte comme un objet de discours entre pouvoirs et savoirs, un objet qui se réfère au corps devenu au cours des derniers siècles un site discursif pour représenter la différence. Cet article s'appuie sur une analyse de documents de la santé publique parus aux États-Unis et issus de bureaux fédéraux et d'une importante revue spécialisée dans le domaine sanitaire, qui ont été publiés entre 2001 et 2009. Cette étude a analysé la manière dont la race est représentée, produite comme objet de connaissance et régulée par les pratiques discursives dans ces documents. Les résultats décrivent deux processus enchevêtrés, la racialisation et la sanitarisation, qui concourent à reformuler l'idée de race. Le premier est un ensemble d'opérations qui visent à identifier, à situer et à opposer les sujets et les groupes à partir de labels standardisés. La sanitarisation assure la traduction des groupes racialisés en termes de maladies, de comportements, de vie ou de mort. Ces pratiques aboutissent à la caractérisation et à la formation d'objets racialisés et sanitarisés et à des stéréotypes ; un ensemble d'opérations qui a tendance à naturaliser la différence. La racialisation apparaît également tiraillée entre un pouvoir sur la vie et un droit de laisser mourir. Enfin, cette étude propose aux acteurs de la santé publique de sortir des frontières imposées par le discours racialisant. PMID:24801319

Cloos, Patrick

2012-03-01

78

La Maîtrise Intuitive des Relations entre Masse, Volume et Masse Volumique Chez des Elèves du Premier Cycle  

Microsoft Academic Search

Résumé  Dans le cadre de la théorie de l'integration de l'information, trois expériences sont consacrées à l'application de la méthodologie\\u000a développée par Anderson au problème de la maîtrise chez des élèves français du secondaire, des relations entre les notions\\u000a de masse, volume et masse volumique. Il apparaît que, s'agissant de juger de la masse d'objets divers dont ils connaissent\\u000a la masse

Etienne Mullet; Daniel Vidal

1986-01-01

79

Servicio de Mapas en Internet para la Salud Ambiental en la Region Fronteriza Entre los Estados Unidos y Mexico  

USGS Publications Warehouse

La region fronteriza de los Estados Unidos y Mexico abarca una gran diversidad de ambientes fisicos y habitaciones, entre los cuales estan los humedales, desiertos, pastos, montanas, y bosques. Estos a su vez son unicos en cuanto a su diversidad de recursos acuaticos minerales, y biologicos. La region se interconecta economica, politica, y socialmente debido a su herencia binacional. En 1995, cerca de 11 millones de habitantes vivian en la zona adyacente a la frontera. Un estudio sugiere que esa poblacion podria doblarse antes del ano 2020.

Buckler, Denny; Stefanov, Jim

2004-01-01

80

L’interconnexion entre la sécurité des communautés et les programmes de Démobilisation, Désarmement et Réintégration (DDR) : une étude de terrain au Congo Oriental (RDC)  

Microsoft Academic Search

Ce compte-rendu est le résultat d'une enquête de 11 semaines sur le terrain dans l‘Est de la République démocratique du Congo (RDC) entre septembre et décembre 2009. Le but de ce rapport est d'analyser les relations entre les questions de sécurité au sein des différentes communautés et le contexte des programmes de Désarmement, Démobilisation et Réintégration (DDR) - en nous

R. C. Willems; H. Rouw

2010-01-01

81

Los medios de comunicación y las violaciones de los derechos humanos en el área de conflicto  

Microsoft Academic Search

La autora, que actualmente es una refugiada política en Austria, relata su trabajo como periodista palestina en las áreas conflictivas de Israel. Sus experiencias revelan las violaciones de Derechos Humanos y el genocidio cometido por las fuerzas armadas israelíes. Este artículo no sólo condena al estado de Israel sino que también cuestiona la falta de compromiso de los Estados Unidos

Kawther Salam

2006-01-01

82

Liberia y el fin de Charles Taylor  

Microsoft Academic Search

Con 200 mil muertos desde el comienzo de la guerra civil y un millón de personas desplazadas (un tercio de la población), Liberia es una fuente de desestabilización de África occidental, que requiere un estudio profundo como núcleo de conflicto regional. Dejando de lado las constantes matanzas y las migraciones masivas de la última década y media, entre los factores

Juan Manuel Ortiz

83

Etude de la transition tribologique entre le fretting et le meso-fretting pour des materiaux de contact electrique  

NASA Astrophysics Data System (ADS)

Dans les installations electriques, les contacts sont toujours soumis a des contraintes alternees ou a des micro-deplacements. Il en resulte une corrosion par fretting, phenomene defini comme un type de deterioration de la surface qui se produit lorsque deux materiaux en contact sont soumis a des mouvements microscopiques d'oscillations de tres faible amplitude (0 a 100 mum). Ceci a pour effet de provoquer une degradation de la resistance de contact et une interruption du passage du courant. Ce phenomene a des repercussions considerables sur le plan pratique puisque les micro-deplacements de pieces en contact peuvent etre causes par la dilatation thermique differentielle des metaux, par des vibrations mecaniques, par la relaxation des contraintes ou par l'echauffement des contacts lorsqu'on interrompt et retablit le courant. Nous avons donc dans le cadre de cette these etudie plusieurs aspects du fretting (0--100 mum) et du meso-fretting (100 a 1000 mum) pour differents materiaux de contact electrique. Des travaux experimentaux ont ete realises a partir de deux montages reproduisant divers aspects de la degradation par le fretting. Un premier montage de fretting de type bille-plaque a ete entierement developpe a l'ETS et un second montage, de type fil-plaque a ete utilise en collaboration avec Hydro Quebec IREQ a Varennes. Plusieurs techniques de mesures et d'analyse relevant tant du domaine de la mecanique du contact que de la metallurgie ont ete utilisees pour traiter les resultats. L'influence du courant sur le taux d'usure et la force de friction a ete examinee pour divers materiaux de contacts. Des essais de fatigue thermique et electrique ont ete realises sur divers materiaux et lubrifiants de contact. Il a ete demontre que pour le domaine entre 100 mum et 1000 mum, le taux d'usure n'est pas le meme de 0 a 100 mum et au dela de 1000 mum. La plupart des materiaux evalues montrent un stade de comportement intermediaire dont le debut se situe entre 100 mum et 300 mum. Lorsque l'on substitut le courant CC a un courant CA de 60 Hz ou 400 HZ, la morphologie des debris aux abords de la zone de contact est differente. De plus, lors de la comparaison du vieillissement thermique par conduction versus par chauffage electrique de certains alliages sans plomb, il a ete montre qu'il pourrait y avoir une difference entre les deux en ce qui concerne le taux de croissance des phases intermetalliques.

Gagnon, Daniel

84

Organisation du produit de deux ensembles: Influence des interactions sociales entre pairs sur les procédures de résolution et les performances individuelles  

Microsoft Academic Search

Résumé  Cette recherche vise à étudier l'efficacité des confrontations socio-cognitives entre enfants sur leurs compétences à résoudre\\u000a des problèmes d'organisation de produits de deux ensembles. Elle est plus particulièrement centrée sur l'analyse du rôle des\\u000a conditions d'organisation de l'interaction et des mécanismes permettant de rendre compte des progrès individuels.\\u000a \\u000a \\u000a 67 enfants âgés de 5 à 6 ans ont été répartis entre

Agnés Blaye

1987-01-01

85

Soil Quality Indicators to Define Land Use in the Area of Native Forest of Entre Ríos, Argentina  

NASA Astrophysics Data System (ADS)

The main economic activity in the area of native forest of the province of Entre Ríos (Argentina) has long been the agricultural and/or livestock production, especially cattle breeding. In recent years, the proportion of agricultural crops in the rotations, especially that of soybean, has increased, thus leading to an increase in the need for land clearing to incorporate new lands for agricultural use. Most of these lands are considered marginal for agricultural use. In addition rice farming with irrigation is a critical part of the Entre Ríos economy. Defining and assessing soil quality indicators (SQI) that show the evolution of the soil with different uses and management systems is a way to contribute to the knowledge of soil quality. The aims of this study were to characterize the current land use and land tenure in the area of native forest of Entre Ríos, as well as to identify and select variables sensitive to agricultural and/or livestock use of the most representative soils of this area (indicators of the dynamic quality of the soil) and define the most appropriate land use according to land suitability and behavior of these indicators. We identified the most representative soil subgroups (corresponding to the orders Vertisols, Mollisols and Alfisols) and defined the production systems livestock-agricultural, agricultural-livestock, agricultural without irrigation, and rice crop irrigated with water from groundwater and surface reservoirs. We also determined the physical, physico-chemical, chemical and microbiological variables of the soil, and characterized the quality of the water for irrigation. We selected the SQI using Principal Components Analysis, to form a minimum data set (MDS). The change in the use of the land responded to a favorable economic situation for agriculture that started in the 1990's. The leasing and sharecropping schemes and the incidental contracts have become increasingly important, predominating over the undivided property. We obtained the MDS for twelve combinations of soil subgroups and production systems. The MDS for each of them presented between six and nine SQI. The indicators showed greater variation in the MDS by production system than by unit of land. Total organic carbon content (TOC) and the structural stability index (Is) were included in all the MDS. The rice systems showed high dependence on the quality of the irrigation water. We also found high fragility of some soil subgroups. The results suggest that rotations including pastures in a high proportion should be considered, especially in Alfisols and Vertisols. The native forest is considered as the basis of sustainable production systems for the study area. Thus, the land that has already been cleared or is about to be cleared should consider an agricultural and/or livestock use according to its productive capacity and its limitations.

Wilson, M. G.; Tasi, H. A.; Paz González, A.; Díaz, E. L.; Sasal, M. C.

2012-04-01

86

COMPARACIÓN ENTRE LAS PAPAYAS \\  

Microsoft Academic Search

The goal of this study was to make maturation scales for two papaya cultivars, of the Solo's group, the most important for exportation and for the internal market: 'Sunrise Solo' and 'Golden'. Fruits were harvested at seven different maturation stages in the tree, on comercial farming located at Linhares-ES, Brazil, based on peel color. It was established a visual maturation

O. Fonseca; Nilton Rocha Leal; Sérgio A. Cenci; Paulo R. Cecon; Ricardo E. Bressan-Smith

87

LA CAPTACIÓN DE RECURSOS PRIVADOS ENTRE LAS ONGD ESPAÑOLAS: UNA APROXIMACIÓN PROBABILÍSTICA \\/ PRIVATE RESOURCES CAPTATION AMONG SPANISH ONGD: A PROBABILÍSTIC APPROXIMATION  

Microsoft Academic Search

La necesidad de recursos privados entre las ENL, tanto para su sostenimiento como para la realización de su labor requiere de estrategias organizativas cada vez más eficaces, por lo que el estudio del fundraising y su eficacia suscita un gran interés. En este trabajo, y basándonos en las conclusiones de estudios previos, pretendemos analizar la relación e influencia de una

M. B. Gutiérrez Villar; R. A. Araque Padilla; M. J Montero Simó

2009-01-01

88

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

89

La GRH et la représentation du travail, entre activité subjective et activité prescrite : pour une prise en compte des dynamiques professionnelles  

Microsoft Academic Search

La communication entend interroger les rapports entre la Gestion des Ressources Humaines et le travail selon une perspective locale. Loin des débats philosophiques sur l'avenir du travail en général dans nos sociétés, elle insiste sur le rôle de la GRH quant à une maîtrise locale du sens du travail. Cette perspective n'est pas particulièrement nouvelle, et de nombreux travaux ont

Jean-Baptiste Suquet

2006-01-01

90

L’influence du degré d’aversion à l’inégalité du décideur sur sa perception des inégalités intragroupes et intergroupes : une application de l’alpha décomposition aux salaires de la France entre 1995 et 2005  

Microsoft Academic Search

Nous proposons dans cette recherche de mettre en avant le rôle capital joué par les préférences du décideur sur sa perception des inégalités intragroupes et intergroupes. Une application réalisée à partir des salaires observés en France entre 1995 et 2005 révèle notamment de grands écarts de valeurs entre les différents indicateurs choisis pour évaluer l’évolution des disparités salariales sur la

Pauline MORNET; Françoise SEYTE; Michel TERRAZA

2012-01-01

91

Entre el museo y el teatro: Oportunidades didácticas de la entrada real de Ana de Austria en Madrid  

Microsoft Academic Search

El despliegue iconográfico y escénico de la entrada real de Ana de Austria en Madrid (1570) supone una sólida plataforma propagandística para Felipe II, a la vez que una significativa oportunidad didáctico-artística para su audiencia. A medio camino entre el festival político y el popular, el festejo celebra no sólo la presencia de los monarcas, sino también la de una

2009-01-01

92

Entre el museo y el teatro: Oportunidades didácticas de la entrada real de Ana de Austria en Madrid  

Microsoft Academic Search

:El despliegue iconográfico y escénico de la entrada real de Ana de Austria en Madrid (1570) supone una sólida plataforma propagandística para Felipe II, a la vez que una significativa oportunidad didáctico-artística para su audiencia. A medio camino entre el festival político y el popular, el festejo celebra no sólo la presencia de los monarcas, sino también la de una

2009-01-01

93

Étude physico-chimique des réactions entre oxydes d'azote Application à l'analyse de ces gaz en sortie de systèmes de combustion  

NASA Astrophysics Data System (ADS)

Analysing gaseous nitrogen oxides emissions at the combustion system outlet (exhaust pipe, central heating, glass kiln,...) are a current environmental topic. Yet, studying these pollutant involves two difficulties : first a great number of NOx do exist, and secondly the system can shift quickly. The objective of this work consists of examining results of literature and studying more specially NO/NO2/O2 system to clarify these problems. For this purpose theoretical and experimental works concerning kinetics and thermodynamics of NOx transformations have been carried out. The NOx maximum starting concentration reaches 1000 ppm in an oxygen-containing atmosphere and with temperature comprised between 25 circC and 1000 circC. These parameters are representative of real combustion conditions. An apparatus has been built to determine both experimental equilibrium and kinetic constants for the reaction 2 NO + O2 = 2 NO2. Rate constants have been measured for temperature lower than 300 circC. Above 300 circC, the catalytic influence of the reactor walls has been clearly established. For each temperature, NOx concentrations at equilibrium give experimental thermodynamic data, in agreement with the theoretical approach. Analyser les émanations d'oxydes d'azote gazeux issus des systèmes de combustion (moteurs automobiles, chauffage urbain, fours de verreries,...) constitue un objectif actuel de recherche concernant l'environnement. L'étude de ces polluants présente une double difficulté. D'une part, ils existent sous de multiples formes, d'autre part de nombreux facteurs viennent influer sur la vitesse de transformation de ces gaz (température, géométrie et nature du réacteur, temps,...). Ce travail a été mené pour effectuer une mise au point des recherches sur le sujet et étudier plus particulièrement aux niveaux thermodynamique et cinétique le mélange gazeux NO/NO2/O2. Un dispositif a été mis au point afin de mesurer expérimentalement les vitesses de réaction pour des paramètres expérimentaux représentatifs des atmosphères générées par les systèmes de combustion (teneur en NOx : 1000 ppm, présence d'oxygène, température comprise entre 25 circC et 1000 circC). Les constantes cinétiques ont ainsi été déterminées pour des températures inférieures à 300 circC. L'influence catalytique de la paroi du réacteur a été mise en évidence au delà de cette température. Les valeurs concernant les équilibres thermodynamiques entre les NOx ont également pu être validées expérimentalement.

Leblanc, E.; Jokela, K.; Perier-Camby, L.; Thomas, G.

1999-05-01

94

Analyse quantitative des foraminifères benthiques actuels de la marge atiantique marocaine entre Cap Draˆa et Cap Juby: reponses fauniques aux changements de l'environnement  

NASA Astrophysics Data System (ADS)

La population des foraminifères benthiques actuels de la marge atlantique marocaine, entre Cap Draˆa et Cap Juby, aétéétudiée dans 58 prélèvements parmi 430 répartis suivant un système de radiales perpendiculaireàla ligne de rivage. Quarante-sept espèces parmi 104 appartenantà58 genres et 28 familles ontétéreconnues. Les abondances absolues de chacune des espèces ontétécomparées dans les différents prélèvements ainsi que les indices biocénotiques (richesse spécifique, abondance, indice de pélagisme, nombre d'espèces benthiques enroulées, nombre d'espèces benthiques costulées) et les paramètres abiotiques (nature de substrat et profondeur). L'analyse factorielle des correspond ances, complétée par la classification hiérarchique et la projection des paramètres biotiques et abiotiques en tant que colonnes supplémentaires ont révéléclue la profondeur est le facteur principal de la distribution des espèces et des prélèvements. En effet, elle oppose les associations d'espèces infralittorales enroulées lisses aux associations d'espècesépibathyales rectilignes ornées, les espèces circalittorales occupent une position intermédiaire. Le facteur secondare correspondàla nature du substrat, oppose les associations d'espèces vasicoles aux associations d'espèces sabulicoles aussi bien celles de l'environnement infralittoral que celles de l'épibathyal.

Rezqi, H.; Oujidi, M.; Boutakiout, M.; Labraimi, M.

2000-02-01

95

USOE Postdoctoral Fellowship, 1968-69. Report.  

ERIC Educational Resources Information Center

This report outlines the activities of the chairman of the Speech Department of San Francisco State College during the 1968-69 postdoctoral fellowship year. The year's study was divided between the Studies in Nonverbal Behavior Department of Langley Porter Neuropsychiatric Institute and the Education Policy Research Center of Stanford Research…

Crisp, Lloyd

96

Presentazione del narghilè e del suo uso  

Microsoft Academic Search

Guida critica della letteratura scientifica sul narghilè (shisha, hookah, waterpipe), dalle origini ai giorni nostri: necessità di un approccio interdisciplinare socio-antropologico, medico e farmacologico

Kamal Chaouachi

97

O USO DE ANIMAIS EM PESQUISAS CIENTÍFICAS  

Microsoft Academic Search

Historicamente, atividades didáticas e de pesquisa utilizando animais são realizadas desde a Antigüidade. Inicialmente, muitas destas práticas eram executadas por pessoas interessadas em aprofundar o seu conhecimento sobre um determinado assunto, porém, sem a exigência da aplicação de um método sistematizado de investigação. Com o passar do tempo esta sistematização incorporou-se às práticas didático-científicas, sendo realizadas por pessoas capacitadas para

Marcia Mocellin Raymundo; José Roberto Goldim

98

Le renforcement de l'interface entre les services de sant? publique et de premi?re ligne : enjeux et pistes de solution  

PubMed Central

Le développement de liens étroits entre la santé publique et les services cliniques, notamment ceux offerts par les médecins de famille œuvrant en première ligne, est prôné dans tous systèmes de santé occidentaux. On suppose que les collaborations formant une telle interface ont des impacts positifs à la fois sur la qualité des soins, sur le fardeau des maladies et sur l'équité dans le système de santé. Si les acteurs des deux domaines admettent le bien-fondé de l'interface et favorisent en principe son développement, plusieurs barrières nuisent aux collaborations dans la réalité. Or, peu est connu sur ces barrières dans le système de santé québécois. Cette étude vise à répondre à ce manque d'information en étudiant l'interface à partir d'une perspective organisationnelle. Deux cadres conceptuels ont été utilisés, soit la typologie de Lasker (1997) et les archétypes de Hinings et Greenwood (1988). L'analyse met en évidence deux des six formes de collaboration proposées par la typologie utilisée, soit la coordination des services aux individus et la mise à profit des rencontres cliniques pour les fins de la santé publique. Les activités associées à ces formes de collaboration, qui sont importantes eu égard au mandat de la santé publique, comportent un intérêt essentiellement pour la santé publique et sont déterminées en pratique unilatéralement par cette dernière. En outre, le manque de coordination des activités qui impliquent une collaboration avec les médecins constitue un obstacle au développement de telles activités en créant des irritants pour les médecins. Il y a donc, dans le système de santé québécois, des possibilités de développement de l'interface là où la collaboration se fait également au profit du travail clinique et là où elle tient compte des contraintes du milieu clinique.

Paquette, Daniel; Reinharz, Daniel

2009-01-01

99

Le transfert de connaissances entre les mathematiques et les sciences. Une etude exploratoire aupres d'eleves de 4e secondaire  

NASA Astrophysics Data System (ADS)

Au moment ou dans plusieurs pays on travaille a refondre les programmes d'etudes, tant au primaire qu'au secondaire, l'interet pour le transfert renait. Un des concepts fondamentaux en apprentissage consiste en l'habilete a reutiliser de facon consciente et efficace un acquis d'une situation a une autre situation. Cette recherche emane de preoccupations professionnelles au moment ou le chercheur etait enseignant au secondaire. Au cours de ces annees, il lui a ete possible de constater que plusieurs eleves percevaient difficilement les liens presents entre les disciplines mathematiques et scientifiques. Des travaux en psychologie cognitive et plus particulierement selon une perspective du traitement de l'information ont servi de cadre de reference pour evaluer et analyser les capacites de transfert aupres d'eleves de 4e secondaire. Ce cadre de reference permet de formuler le principal objectif qui est de mieux comprendre le processus de transfert chez des eleves en situation de resolution de problemes scientifiques. Cette these s'interesse donc au transfert en tant que phenomene important du processus d'apprentissage au sens de l'integration. La methode de recherche choisie, de nature qualitative, est principalement axee sur l'evaluation de la capacite a transferer des connaissances lors d'une epreuve et d'un entretien. Pour evaluer ce potentiel de transfert, nous avons elabore deux outils: une epreuve en mathematiques et en sciences et un guide d'entretien. Pour la passation de l'epreuve, le chercheur a pu compter sur la collaboration de 130 sujets provenant de deux ecoles. L'entretien complete la prise de donnees avec 13 sujets ayant accepte de poursuivre l'etude. Les donnees recueillies par ces instruments font ensuite l'objet d'une analyse de contenu. En premier lieu, les verbatims de l'epreuve et de l'entretien ont ete transcrits, puis codifies. La correction des reponses fournies pour les problemes resolus s'est faite a partir d'une grille d'analyse qualitative et adaptee de la litterature (Thouin, 1995). Une seconde serie d'analyses permettant de categoriser les reponses selon la typologie des connaissances declaratives, procedurales et conditionnelles complete la prise de donnees. Nos resultats indiquent que les sujets sont tres influences par des elements de surface, principalement lorsqu'il s'agit de problemes auxquels ils ne sont pas habitues. En l'absence de connaissances de base, plusieurs sujets vont tendre vers des propositions de solution "pratico-pratique" provenant de leur vecu: cela nous apparait d'importance d'un point de vue didactique et en matiere de transfert. Lors des entretiens realises un mois plus tard, les sujets ont eprouve de la difficulte a se rappeler le contenu de l'epreuve. Et lorsqu'il y avait un rappel, celui-ci etait superficiel et surtout axe sur le contenu ou le contexte d'un probleme. La plupart des sujets ne pouvait nommer que deux ou trois elements (des problemes en mathematiques, en sciences physiques, le probleme de la fenetre, le probleme du laser, etc.). Nos resultats confirment ce que plusieurs chercheurs (Julo, 1995, Jonnaert et Vander Borght, 1999; Richard et al., 1990) qui s'interessent aux questions de l'apprentissage admettent aujourd'hui: l'eleve ne travaille jamais sur la situation proposee par l'enseignant, mais bien sur la representation qu'il s'en est construite. Au plan methodologique, cette recherche est interessante par la variete des sources de collecte de donnees utilisees, par l'application d'outils methodologiques et d'analyses originaux tires de la recherche et de la pratique. Du cote theorique, il resulte de cette etude une meilleure comprehension du processus de transfert des connaissances mathematiques vers les sciences physiques. Finalement, aux plans didactique et pedagogique, cette recherche alimente la reflexion sur l'apprentissage et l'enseignement des sciences au secondaire. Elle fait ressortir que les mathematiques sont importantes dans la mobilisation de certaines connaissances scientifiques et que l'enseignant peut et devrait jouer un

Samson, Ghislain

2003-06-01

100

Competition entre supraconductivite et magnetisme au voisinage de la transition de Mott dans le conducteur organique quasi-bidimensionnel k-(BEDT-TTF)2copper[N(CN)2]bromine  

NASA Astrophysics Data System (ADS)

Les conducteurs organiques quasi-bidimensionnels kappa-ET2X presentent d'importantes similitudes avec les SCHT telles qu'une phase isolant de Mott, un regime de pseudogap et un etat supraconducteur. L'etude de leurs proprietes apparait donc complementaire. Parmi les interrogations persistantes concernant la physique de ces systemes, l'origine du (ou des) processus exotique d'appariement, responsable de la supraconductivite est le sujet suscitant l'interet le plus marque dans la communaute. L'hypothese d'un mecanisme lie a la proximite d'un etat antiferromagnetique est privilegiee. Une etape importante dans la resolution de cette problematique est l'identification de la symetrie du parametre d'ordre. D'apres de nombreux travaux sur les systemes fortement correles, la sonde ultrasonore, de par sa sensibilite aux excitations de quasiparticule a basse temperature, est consideree comme particulierement adaptee a l'etude de cette propriete. Cependant, son emploi necessite l'utilisation d'un compose metallique a basse temperature et completement supraconducteur. Le compose metallique organique kappa-ET 2Cu[N(CN)2]Br presente toutes les caracteristiques necessaires a l'etude de cette propriete. En effet, il est situe loin de la transition du premier ordre de Mott et est completement supraconducteur. De facon surprenante, ce systeme semble se coupler fortement avec le reseau ce qui augmente significativement la sensibilite de cette sonde aux proprietes du gaz electronique. Cependant, des difficultes techniques importantes, liees a la nature intrinseque de ce materiau, doivent etre surmontees pour proceder a des mesures suivant differentes polarisations. La presente etude a profondement modifie notre comprehension de ce systeme. En effet, ces mesures ont permis de constater que le kappa-ET2Cu[N(CN)2]Br est un compose qui est situe en bordure de la zone de coexistence entre la supraconductivite et le magnetisme, ce qui constitue un resultat totalement inattendu. De plus, la variation judicieuse du cycle thermique s'est averee etre equivalente a une modification de la pression chimique. Cette derniere est modifiee par l'intermediaire d'une relaxation structurale autour de 85 K appelee la transition de verre d'ethylenes. Cela nous a permis de suivre l'evolution de cette coexistence en s'approchant de la transition de premier ordre, et ainsi de statuer sur la competition entre la supraconductivite et le magnetisme ainsi que sur l'existence d'une separation de phase d'ordre macroscopique. De plus, nous avons observe une anisotropie similaire sur les mesures de vitesse ultrasonore entre le regime de pseudogap et la supraconductivite. Ce resultat tend a confirmer l'existence d'une physique commune entre le regime de pseudogap et l'etat supraconducteur. Le regime de pseudogap, encore meconnu a ce jour, est probablement relie a des fluctuations antiferromagnetiques, dont l'origine pourrait etre un emboitement de la surface de Fermi quasi-unidimensionnelle de ce compose, ou bien relie a la proximite de la physique de Mott. Enfin, l'analyse de la symetrie du parametre d'ordre supraconducteur, qui est probablement de type s+d, tend a demontrer que les processus de couplage interplan sont d'une importance cruciale. L'approche theorique de Hubbard purement 2D dans le plan conducteur semble donc insuffisante pour la recherche du mecanisme d'appariement.

Fournier, David

101

Bojayá: entre el miedo y los medios  

Microsoft Academic Search

El día en que en la iglesia de Bojayá las FARC hicieron estallar una pipeta de gas que mató a 119 civiles y dejó heridas a otras 90, ese municipio en la ribera del Atrato dejó de ser un desconocido pueblo de la geografía colombiana. Los ojos de la comunidad nacional e internacional se volcaron allí. La masacre se convirtió

Aída Carolina Lancheros Ruiz; Julián Andrés Rincón Ortiz

102

Mundos Torcidos: diferenças entre crioulos e africanos na dinâmica da construção de comunidades de grandes propriedades no Sudeste brasileiro do século XIX. Twisted worlds: differences between African and Creole in the dynamics of building communities of large properties in the Southeast of Brazil of the nineteenth century  

Microsoft Academic Search

Resumo: Este trabalho tem como objetivo identificar e analisar elementos constitutivos das relações entre grupos de escravos oriundos da diáspora africana e seus pares nascidos no Brasil, em busca de um padrão cultural e de fundamentos morais que organizariam as diferenças instauradas no cativeiro, buscando compreender um pouco mais a dinâmica do manuseio de patrimônios imateriais, quer trazidos na travessia

Carlos Engemann

103

Análisis y Síntesis Audiovisual para Interfaces Multimodales Ordenador-Persona  

Microsoft Academic Search

Las técnicas multimodales de procesamiento de señal están llamadas a jugar un papel preponderante en la implementación de interfaces que faciliten la interacción natural entre los ordenadores y los humanos. En particular, el desarrollo de interfaces eficientes que emulen la comunicación entre personas requiere el uso de técnicas capaces de procesar conjuntamente los modos visual y auditivo. Este trabajo introduce

Xavier Sevillano; Javier Melenchón; Joan C. Socoró

104

USOE Post-Doctoral Research Training Fellowship. Summary of Activities.  

ERIC Educational Resources Information Center

During his postdoctoral fellowship year, Dr. William L. Goodwin audited courses on early childhood learning and development and on research methodology. He also attended numerous conferences and visited preschool EPDA programs. The report contains a complete list of courses audited, conferences attended, and schools visited. (RT)

Goodwin, William L.

105

USO DA ADUBAÇÃO FOLIAR NITROGENADA E POTÁSSICA NO ALGODOEIRO  

Microsoft Academic Search

NITROGEN AND POTASSIUM IN FOLIAR APPLICATION ON COTTON CROP The present work was conducted in Selvíria county (MS-Brazil), in the agricultural year of 1998\\/99, for evaluating nitrogen and potassium foliar application to supplement sowing fertilization on cotton (IAC 22) crop. A randomized complete block design with 13 treatments and four replications was used. The treatments were constituted by a control

MARCO ANTONIO CAMILLO DE CARVALHO; HELDER BARBOSA PAULINO; ENES FURLANI-JÚNIOR; SALATIÉR BUZETTI; MARCO EUSTÁQUIO DE SÁ; MANOEL LUIZ FERREIRA DE ATHAYDE

2001-01-01

106

Esercitazioni Matematiche: Una Rivista Ad uso Degli Studenti Universitari.  

ERIC Educational Resources Information Center

The history of the journal "Esercitazioni Matematiche" (1921-43) edited by the "Circolo Matematico di Catania" for university students is described. A selection of proposed problems with some of their solutions is reported. (Author)

Micale, Biagio

1992-01-01

107

Aceptación y uso de herbolaria en medicina familiar  

Microsoft Academic Search

Objective. To explore the degree of usage of therapeutic medical plants among the patients, physicans and health workers in a local Family Mediccal Care Unit of the Mexi- can Institute of Social Security (IMSS)). Material and methods. A transversal descriptive study was performed. A questionnaire focusing on two variables was designed and validated. It was applied to 60 family physicians,

Genaro Armando Taddei-Bringas; Manuel Alberto Santillana-Macedo; José Alfredo Romero-Cancio; Miguel Bernardo Romero-Téllez

1999-01-01

108

Lei Brasileira para o uso científico de animais  

Microsoft Academic Search

The Brazilian scientific community claimed for a definitive systematization and for comprehensive and realistic national rules, to provide guidance and regulation, instead of sanctions, so that the question of scientific research involving animals could be better contemplated. This is beginning to occur now with Law n.º 11.794, sanctioned by the President of the Republic on November 8, 2008. Purpose: To

Marcelo Marcos

109

Amplificadores en bandas para receptores de uso radioastronómicos  

NASA Astrophysics Data System (ADS)

Está en curso de realización en el IAR un cabezal de receptor, en la frecuencia de 3.3 GHz. Este receptor, conjuntamente con los sistemas de procesamientos actuales del IAR y con los futuros proyectos de procesamientos, permitirán las observaciones de las líneas de la molécula de CH, de gran interés astrofísico, y las observaciones en el continuo que complementarán las realizadas en 1420 MHz. En este trabajo, se presentan el diseño de los amplificadores de bajo ruido, que van a conformar las primeras etapas del receptor de 3.3 GHz. El desarrollo de los mismos se realizó teniendo en cuenta que la temperatura del sistema, según consideraciones observacionales, deberá ser de 60oK. Por tal motivo se realizó un diseño de bajo ruido utilizando como elemento activo un HEMT. Tanto los métodos de diseño, como el circuito final, fueron realizados y comprobados con programas de simulación, permitiendo de esta forma obtener el amplificador deseado.

Bava, A. J.; Sanz, A. J.

110

Del tabaco al uso de otras drogas: ¿el uso temprano de tabaco aumenta la probabilidad de usar otras drogas?  

Microsoft Academic Search

Objective. To assess the likelihood of substance abuse predicted by age of first exposure to tobacco. Material and Methods. Data from the 1998 National Household Survey on Addictions in urban areas were analyzed. Results. The age period of greater likelihood of drug experimentation is between 15 and 19 years; only 5.6% of drug users and 13% of alcohol beverage drinkers

Ma. Elena Medina-Mora; Marco Polo Peña-Corona; Patricia Cravioto; Jorge Villatoro; Pablo Kuri

2002-01-01

111

Mapping Empires, Mapping Bodies: Reflections on the Use and Abuse of Cartography  

Microsoft Academic Search

L'exercici del poder es pot mostrar en un ventall infinit de cares, en aquest\\u000aarticle se'n presenten dues: el domini territorial i la possessió personal. Amb\\u000auna sèrie d'exemples cartogràfics il·lustra abastament els usos i els abusos dels\\u000amapes al llarg de la història i en especial referència als de l'Imperi Britànic. La\\u000acomparació entre aquests usos cartogràfics i el

Matthew H. Edney

2008-01-01

112

MÉXICO. DILEMA ENTRE LA ECONOMÍA Y LA INSEGURIDAD  

Microsoft Academic Search

La poca efectividad en el combate al crimen organizado en México tiene su origen en diversas causas, que van desde la incapacidad de conceptualizarla, hasta la negación del sentido económico sobre el que se soporta la actividad delictiva en nuestro país, lo cual impide hacer propuestas de política más efectivas que no se reduzcan únicamente a los enfrentamientos violentos con

Guillermo Campos Ríos

2012-01-01

113

Tratamento da rinite alérgica: comparação entre acupuntura e corticóide nasal  

Microsoft Academic Search

Objective: This study compared the treatment of allergic rhinithis effect using acupuncture and topic nasal corticoids in the evaluation of the main clinical parameters ( sneezing, itching, rhinorrhea, nasal congestion, and postnasal drainage) either in the otorhinolaryngological examination and in the laboratorial values of blood eosinophil and total IgE serum. Method: A total of 53 patients with perennial allergic rhini-

Cecília Baccili; Cury Megid; Patrícia Maluf Cury; José Antonio Cordeiro; Rassen Saidah; Bosco Guerreiro da Silva

114

GPS, punto de contacto entre la Astronomía y otras disciplinas  

NASA Astrophysics Data System (ADS)

En los primeros años de la pasada década, un grupo de Astrónomos de La Plata iniciaron trabajos de investigación en Geodesia Satelital. En esta presentación se propone repasar sus principales logros y situarlos en el contexto del desarrollo de la disciplina a nivel mundial. Por entonces las aplicaciones prácticas de la disciplina eran indirectas y solo evidentes para los especialistas. Los errores del Posicionamiento Satelital eran de varios metros y en posicionamiento relativo, del orden de medio metro. Estos resultados se lograban al cabo de varios días de medición continuada. En los años siguientes, el sistema GPS alcanzó su nivel operacional y produjo una revolución tanto en lo relacionado con los tiempos de medición como con las precisiones. El grupo de La Plata se desarrolló simultáneamente con GPS, lo que posibilitó su participación actual en diversos temas vigentes: aplicaciones de alta precisión para la materialización de sistemas terrestres de referencia, monitoreo de movimientos de la corteza, contribución con servicios internacionales para la determinación de movimientos tectónicos globales y regionales, monitoreo de la ionósfera a partir de la propagación de las señales, determinación de la ondulación del geoide a escala local, etc. También se generaron muchas aplicaciones prácticas algunas en tiempo real: navegación, apoyo a imágenes aéreas o satelitales, aplicaciones a la agricultura, catastro y ordenamiento territorial, apoyo a relevamientos geofísicos, etc.

Perdomo, R.

115

Regulaciones del mercado laboral: un estudio comparativo entre países  

Microsoft Academic Search

En este trabajo se analizan tres tipos de instituciones prevalecientes en los mercados laborales de muchos países, normas sobre salario mínimo, introducción de costos no salariales (prestaciones complementarias) y las políticas de salario y empleo del gobierno. Se sostiene que estos tres son los aspectos estratégicos a analizar en el caso de los países en desarrollo con respecto a las

Peter R. Fallon; Luis Riveros

116

COOPERACION ENTRE GOBIERNOS PARA LA RECAUDACION DE IMPUESTOS COMPARTIDOS  

Microsoft Academic Search

This paper deals with the problem of fiscal corresponsability of twogovemment levels in a game theory context. It is assumed that Nash equilibriaof the non-cooperative game between both Govemments are not Pareto optimal.Then, assurning the existence of non-equilibrium strategies, which would allowboth of them to improve, it is questioned whether the introduction ofinterposed agents (Tax Agencies) would be a way

Francisco Pérez García; Gonzalo Olcina Vauteren

1991-01-01

117

Hipertensão arterial entre trabalhadores de petróleo expostos a ruído  

Microsoft Academic Search

A cross-sectional study with a retrospective component was conducted to evaluate oc- cupational noise exposure as a potential risk factor for arterial hypertension among 775 workers from an oil-drilling industry. Hypertension was defined as ? 140\\/90mmHg. Occupational noise exposure was measured as: (1) exposure to sound pressure levels ? 85dbA for 10 years or more and (2) moderate-to-severe noise-induced hearing

Norma Suely Souto Souza; Fernando Martins Carvalho; Rita de Cássia Pereira Fernandes

2001-01-01

118

A complexidade das relações entre drogas, álcool e violência  

Microsoft Academic Search

This article discuss the complex relations between drugs and violence. Drawing on empirical studies and current forms of discourse, it analyzes conceptual and methodological problems related to the establishment of causal nexuses, risks, and associations. By demonstrat- ing the theoretical and practical difficulties in such associations, it also points to the need for a debate in the field of public

Maria Cecília de Souza Minayo; Suely Ferreira Deslandes

1998-01-01

119

Comparación entre los sitios de LLAMA y APEX  

NASA Astrophysics Data System (ADS)

A comparison among the meteorological condition prevailing at the location of APEX (Atacama Pathfinder Experiment) telescope and the site selected to deploy LLAMA (Long Latin American Millimeter Array) is carried out. The later is dubbed Alto Chorrillo, and is located 4800 m above sea level and around 16 km eastward from the town of San Antonio de los Cobres (province of Salta). This work is part of a long term monitoring campaign aim at selecting sites for millimeter and submillimeter radioastronomy that is being carried out by the Instituto Argentino de Radioastronomía (IAR) since 2002. FULL TEXT IN SPANISH

Bareilles, F. A.; Morras, R.; Hauscarriaga, F. P.; Guarrera, L.; Arnal, E. M.; Lepine, J. R. D.

120

Mobilidade dos Funcionários públicos Federais: Diferenças Entre os Poderes  

Microsoft Academic Search

Based on a special Rais-Migra tabulation that allows one to trace work trajectories,the present study estimates the total length of service for active federal civil servants,disaggregated by length of time spent at present post. Prior time is also considered,whether spent in other civil service posts or in private employment.This study was largely motivated by the need to estimate the civil

Kaizô Iwakami Beltrão; Sonoe Sugahara; Fernanda Paes Leme Peyneau; João Luis de Oliveira Mendonça

2005-01-01

121

El cáncer entre las minorías con VIH y sida  

Cancer.gov

Cancer and HIV/AIDS has always been “a tale of two diseases,” according to researchers at the NCI. Infection with HIV not only weakens the immune system, leading to AIDS and increasing the risk of opportunistic infections, but also increases the risk of several types of cancer. This Spanish-language Lifelines articles explains how HIV/AIDS affects cancer risk.

122

Estudio comparativo entre medidas de creatividad: TTCT vs. CREA  

Microsoft Academic Search

Title: Comparative study between creativity measures: TTCT versus CREA. Abstract: The general mission of this work is to make a comparative study between two tests of valuation of the creativity. The used total sample is of 96 students, pertaining to a School of Infantile and Primary Education, of the region of the Plateau (municipality of Jumilla) in the Region of

Olivia López Martínez; Juan Navarro Lozano

2008-01-01

123

Stabilisation et redistribution budgétaires entre régions : État centralisé, État fédéral  

Microsoft Academic Search

[eng] Frédéric Zumer. The fiscal aspects of the future EMU lead to lively debates. The purpose of this work is to consider the stabilizing role of a federal budget in the context of a monetary union, and the appropriateness of creating a specific shock-absorber mechanism in Europe. Its purpose would be to permit the member states to cope with transitory,

Frédéric Zumer

1998-01-01

124

Evaluacion entre colegas profesores (Peer Review of Teachers). ERIC Digest.  

ERIC Educational Resources Information Center

This digest in Spanish examines peer review, focusing on how these types of reviews can improve teacher competence. Peer review is often linked to peer assistance, which helps new and veteran teachers improve their knowledge and skills. In peer-review programs, consulting teachers conduct formal evaluations and recommend whether the participating…

Hertling, Elizabeth

125

Comparaison entre calculs de vulnérabilité sismique et propriétés dynamiques mesurées  

Microsoft Academic Search

Large-scale seismic vulnerability assessment methods use simplified formulas and curves, often without providing uncertainties. They are seldom compared to experimental data. Therefore, we recorded ambient vibrations and estimated modal parameters (resonance frequencies, modal shapes and damping) of 60 buildings in Grenoble (France) of various types (masonry and reinforced concrete). The knowledge of resonance frequencies in the linear domain is essential

Clotaire Michel; Philippe Guéguen; Pierre-Yves Bard

126

Mécanismes physiques et modélisation mécanique du frottement entre corps solides  

Microsoft Academic Search

Physical mechanisms and mechanical models of solid friction. First we present the theory of solid friction due to Bowden and Tabor and its extension by the junction growth theory which provides some theoretical support of Coulomb's friction law. After a brief discussion of its experimental validation, we present some theoretical works developed for a validation or an extension of Bowden–Tabor's

Eric Felder

2000-01-01

127

Négociation entre agents au sein de réseaux ad-hoc  

Microsoft Academic Search

In the last years the multi-agent paradigm has emerged as a suitable solution to the challenges of electronic commerce (e-commerce) applications. However, new problems arise in mobile-commerce scenarios, where agents negotiating on behalf of their users are deployed on mobile devices. Negotiation is a time-constraint process and it might be difficult to realize applications in ad-hoc networks. In this paper

Cosmin Carabelea; Michael Berger

2005-01-01

128

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

129

El alcohol y el riesgo de cáncer  

Cancer.gov

Hoja informativa que resume la comprobación de la relación entre el consumo de alcohol y el riesgo de varios cánceres. Incluye información acerca de los factores que afectan el riesgo de cánceres asociados con el alcohol, como lo son los genes de una persona y el uso de tabaco.

130

Enteropatía congénita y trasplante intestinal  

Microsoft Academic Search

ExtractoLa insuficiencia intestinal (II) exige el uso de nutrición parenteral (NP). Entre las causas de II prolongada grave destacan el síndrome del intestino corto, trastornos de la motilidad grave (aganglionosis total o subtotal o síndrome de seudoobstrucción intestinal crónica) y enfermedades congénitas del desarrollo de los enterocitos. Puede aparecer insuficiencia hepática grave en pacientes con II como consecuencia de una

Olivier Goulet

2006-01-01

131

Resolución de problemas basada en el análisis. Hacer del análisis y del razonamiento el foco de la enseñanza de la física  

Microsoft Academic Search

Resumen. Usando los resultados provenientes de la investigación educativa en áreas tales como concepciones alternativas, diferencias entre expertos y novatos, adquisición de esquemas, sobrecarga cognitiva y análisis jerárquico, hemos desarrollado un marco para pensar sobre la organización del conocimiento y su uso para la comunicación, y sobre el razonamiento y la resolución de problemas. Basados en este marco y en

J. Leonard William; William J. Gerace; Robert J. Dufresne

2002-01-01

132

Estimación econométrica de la oferta laboral de los hogares nucleares en Colombia  

Microsoft Academic Search

RESUMEN Los desarrollos teóricos recientes muestran que las decisiones al interior de los hogares surgen de la interacción entre las preferencias individuales de cada miembro respecto al consumo de bienes, pero también dependen del uso de su tiempo, de la restricción presupuestaria del hogar y del proceso de negociación que tiene lugar al interior de este. Como resultado de estas

Jaime Enrique Cusba García; Iván Andrés Ramírez Pinzón; Wilson Mayorga Mogollón

2010-01-01

133

ACTIVIDADES FORESTALES Y SU RELACIÓN CON EL SIG EN FORESTAL BOSQUES DEL PLATA S.A. FORESTRY ACTIVITIES AND THEY RELATIONSHIPS WITH THE GIS IN FORESTAL BOSQUES DEL PLATA S.A  

Microsoft Academic Search

Resumen El objetivo del presente trabajo es presentar las relaciones existentes entre algunas de las actividades forestales actualmente desarrolladas en Forestal Bosques del Plata S.A. y el sistema de información geográfica (SIG) vigente. Con el uso de nuevas tecnologías y capacitación del personal se han desarrollado proyectos de estudios de plantación establecida, instalación de parcelas permanentes, fichas de rodal y

R. Trujillo; R. Pezzutti; S. Schmidt; F. Rodríguez

134

No Financial Disincentive for Choosing More Healthful Entr?es on Children's Menus in Full-Service Restaurants  

PubMed Central

Children are eating restaurant foods more than ever before, and price is among the top considerations for food choices. We categorized and enumerated entrées on children’s menus from 75 full-service restaurant chains to compare prices of more healthful and less healthful entrées to test the assumption that more healthful food is more expensive. The mean (standard deviation) price of more healthful entrées ($5.38 [$2.01]) was not significantly different from the price of less healthful entrées ($5.27 [$2.04]). In contrast to research demonstrating that more healthful foods tend to be more expensive in grocery stores, more healthful entrées on children’s menus in restaurants were not more expensive than less healthful entrées.

West, Delia

2013-01-01

135

O uso do programa Spring no Cálculo do Índice de Área Verde em Goiânia-GO  

Microsoft Academic Search

The raising of vegetable cover is very important to estimate the actual situation the of life quality population of a city, because the arborization, can promove the equilibrate environmental urban, contributing for the control of the atmosphere pollution and sound pollution, climatic equilibrate, to harmonize the architectonical spaces, to reduce wind intensity and so forth. The objective of this paper

Gabriela Nogueira Ferreira da Silva; Maia de Paula Neto; Dyellen Carla Costa Diniz; Genival Fernandes Rocha

136

USO DE CINTURÃO VEGETAL COMO ESTRATÉGIA DE OBSTRUÇÃO VISUAL DE ÁREAS DEGRADADAS1  

Microsoft Academic Search

RESUMO - Na área de empréstimo da Ilha da Madeira (13 m de decapeamento) são desenvolvidos um conjunto de medidas conservacionistas desde 1993. Os resultados visuais são lentos e, como estratégia de agilizá-los, desenvolvemos um manejo paisagístico das bordaduras, onde o cinturão vegetal é composto por espécies arbustivas e arbóreas selecionadas em função de sua rusticidade, características plásticas individuais e

Magna Cunha; Ricardo VALCARCEL

137

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

138

O uso prolongado de benzodiazepínicos em mulheres de um centro de convivência para idosos  

Microsoft Academic Search

While experts recommend caution against long-term benzodiazepine use in the elder- ly, survey data suggests that the use of benzodiazepine increase with age. The patterns of benzo- diazepine use and factors associated with long-term use in population at risk were studied with a standarlized questionnaire applied to 634 women over 60, who attended a daycare center for older people in

Gisele Huf; Claudia de Souza Lopes; Suely Rozenfeld

2000-01-01

139

78 FR 31840 - Safety Zone; USO Patriotic Festival Air Show, Atlantic Ocean; Virginia Beach, VA  

Federal Register 2010, 2011, 2012, 2013

...for inflation) or more in any one year. Though this rule will...substantial direct effect on one or more Indian tribes, on the...determined that this action is one of a category of actions that...Atlantic Ocean in Virginia Beach, VA in order to restrict vessel...

2013-05-28

140

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

141

Pesticide Safety for Farmworkers (Uso Seguro de Pesticidas para los Trabajadores del Campo).  

National Technical Information Service (NTIS)

The manual was developed as a supplemental guide to the Farmworkers Pesticide Safety Training slide-tape program. The manual provides basic pesticide safety information for farmworkers including: pesticide label information, protective clothing, recognizi...

B. Poli S. S. Fluker

1985-01-01

142

WICHE/USOE Institute for Training in Staff Development, June 1975-June 1976.  

National Technical Information Service (NTIS)

An institute was conducted to introduce Western state library administrators to methods for planning staff development training. The intent was to strengthen staff development programs and to build a network of individuals interested in staff development ...

M. Duggan E. A. Montague

1976-01-01

143

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

144

THE ENGLISH PROGRAM OF THE USOE CURRICULUM STUDY AND DEMONSTRATION CENTER MATERIALS CURRENTLY AVAILABLE.  

ERIC Educational Resources Information Center

AFTER FIVE YEARS OF FEDERALLY-SUPPORTED CURRICULUM RESEARCH IN ENGLISH, 14 STUDY CENTERS AND FIVE DEMONSTRATION CENTERS ARE NOW MAKING THE RESULTS OF THEIR WORK AVAILABLE TO THE PUBLIC. THIS PAMPHLET LISTS TITLES OF REPORTS AND INSTRUCTIONAL MATERIALS PREPARED BY THE FOLLOWING CENTERS--(1) CARNEGIE-MELLON UNIVERSITY, (2) TEACHERS COLLEGE, COLUMBIA…

1967

145

Simposio Internacional de Geología Ambiental para Planificación del Uso del Territorio  

Microsoft Academic Search

In-situ produced cosmogenic 10Be measurements of offset alluvial surfaces have been used to estimate the slip rates along the Mejillones Fault, a Mesozoic fault located at the north-western Mejillones Peninsula in northern Chile, that was reactivated as normal fault during the Upper Quaternary. Average slip rates of 0.29 ± 0.06 m\\/ka over the last 50 ka were calculated. These results

Aix-en Provence; Bondy Cédex

146

Ayahuasca: Uma abordagem toxicológica do uso ritualístico Ayahuasca: A Toxicological Approach of the Ritualistic Use  

Microsoft Academic Search

The Ayahuasca tea has been used for more than a thousand years by the Indians of South America, as a spiritual and ritualistic instrument, for religious purposes. Non-Indians sects have arose in the last century, and started to use the tea. This utilization is increasing since the legalization of the Ayahuasca for religious use in Brazil. The effect of the

MARIA CAROLINA MERES COSTA; MARIANA CECCHETTO FIGUEIREDO; SILVIA DE O. SANTOS

147

Experimento Virtual de Controle: Uso de Técnicas de Realidade Virtual para a Construção de um Sistema \\  

Microsoft Academic Search

The main purpose of this paper is the development of a virtual experiment to be used as a teaching tool for control disciplines. A linearized mathematical model of the system in the state-space form is used to project a controller using pole location. The three-dimensional ambient which represents the Ball-Beam dynamic system was built using the API Java 3D. The

Éder Torres Patrício; Max Rothe-Neves; Orlando Fonseca Silva

148

Controle orbital de satélites artificiais com propulsão e uso de gravidade lunar  

NASA Astrophysics Data System (ADS)

A redução do custo de combustível de uma manobra é atualmente a grande prioridade de todos os programas espaciais existentes no mundo. As manobras assistidas pela gravidade são uma ótima forma de se contornar o problema pois proporcionam economias com vasto impacto no custo final da missão. Neste trabalho é feito um estudo particular do controle orbital de um satélite artificial da Terra usando a gravidade da Lua. O objetivo é estudar uma técnica econômica para uma mudança de plano de um satélite que está em órbita em volta da Terra. A idéia principal desta abordagem é enviar primeiramente o veículo espacial em direção à Lua usando uma manobra mono-impulsiva para que assim o campo gravitacional da Lua possa fazer a mudança de plano desejada (sem custo de combustível) e só então retornar o veículo aos valores iniciais de semi-eixo e excentricidade usando uma manobra bi-impulsiva tipo Hohmann. Para tanto, é assumido que a espaçonave inicia em uma órbita circular coplanar à órbita da lua em torno da Terra e a meta é colocá-la em uma órbita similar que difere da órbita inicial somente pela inclinação. São usadas equações analíticas baseadas na abordagem Patched Conics para se calcular a variação na velocidade, momento angular, energia e inclinação do veículo espacial que realiza esta manobra. Várias simulações são feitas para se avaliar as economias de combustível envolvidas.

Torres, K. S.; de Almeida Prado, A. F. B.

2003-08-01

149

Determinantes del uso inconsistente del condón en mujeres que tienen sexo vaginal, oral y anal  

Microsoft Academic Search

Title: Consistent condom use determinants among woman that have vaginal, oral and anal sex. Abstract. Some variables from the psychological prevention model ap- plied to AIDS were examined as predictors of consistent condom use dur- ing vaginal, oral and anal sex among university woman. A cross-sectional correlational design was used with a sample of 355 university female stu- dents' age

Susana Robles Montijo; Julio Alfonso; Piña López; Diana Moreno Rodríguez

150

Executive Summary; Performance Review of USOE's ESEA Title I Evaluation Technical Assistance Program.  

ERIC Educational Resources Information Center

This report summarizes the opinions, conclusions, and recommendations expressed by a review panel with regard to the performance of the United States Office of Education's 10 Technical Assistance Centers (TACs). Background information concerning the functions and major components of the TAC system and the methodology of the review is provided.…

Hope Associates, Inc., Washington, DC.

151

USO DE MUTAGENOS EN EL MEJORAMIENTO DE LA PAPA Solanum tuberosum L  

Microsoft Academic Search

Use of Physic Mutagens for Potato Breeding Tubers, true seed and adult plants near flowering stage of potatoes, were rather sensitive to radiation since a dosage of 6-10 Krad were enough to become lethal. Tubers directly irradiated were able to get different pigments which were considered as chimaeric non-stable, mutants. If is possible to increase genetic variation after crossing plants

RUBÉN SOSA

152

Welding Fundamentals. U.S.O.E. 17.23 16. Student's Manual [and] Instructor's Guide.  

ERIC Educational Resources Information Center

This two-part publication covers the fundamentals for the beginning welder. The student's manual includes many illustrations to acquaint the student with tools and materials used in the welding trade. The manual is self-contained and is written for use in all types of trade and industrial classes. The manual contains 10 lessons, each of which…

Fulgham, Wayne

153

Sistema de suporte à decisão para recomendação de uso e manejo da terra  

Microsoft Academic Search

The objective of this work was to develop a decision support system to recommend land use and practices for soil conserva- tion and management, which integrates an Expert System, Geographic Information System (GIS), a database and an interface to monitor input and output data and the messages passed between the subsystems. Using soil and slope maps, the developed system determines

Monica L. Giboshi; Luiz H. A. Rodrigues; Francisco Lombardi Neto

2006-01-01

154

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

Microsoft Academic Search

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

José Carlos Fernandes Galduróz; Aldous Huxley

155

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

Microsoft Academic Search

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

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

2003-01-01

156

USO DA CONTAGEM FECAL DE OVOS DE NEMATÓIDES (OPG) PARA ESTIMAR A CONDIÇÃO CLÍNICA EM CAPRINOS  

Microsoft Academic Search

The purpose of this work was to observe, under natural infection conditions, the impact of faeces nematode egg count (EPG) on hematological and clinical parameters, to demonstrate if EPG could be used to estimate clinical condition in goats. Samples of blood and faeces were collected from 90 females over 12 months from São Paulo state (Brazil) commercial herds. Animals were

Sebastião Pereira de FARIA; Marilene Machado SILVA; Monika SCHEIBEL; Maria de Fátima; Patrícia RABELLO; Heloísa Godoy BERTAGNON; Maurício GARCIA

157

Uso de Ferramentas Educacionais na Disciplina de Cálculo Diferencial e Integral  

Microsoft Academic Search

The work demonstrates the use of the mathematical software MUPAD 4.0 in the discipline Differential and Integral Calculus I administered in the Information Systems Course on the campus of UFC in Quixada-CE. Computational resources used as didactic tools can, as well as improving mathematics classes, facilitate the development of concepts to understand such things as the exploration and integration of

Mauro Lima de Campos

158

AGUA Y TURISMO. NUEVOS USOS DE LOS RECURSOS HÍDRICOS EN LA PENÍNSULA IBÉRICA. ENFOQUE INTEGRAL  

Microsoft Academic Search

In this work we have estudied the main characteristics the water and tourism in the Ibe- rian Peninsula, specially in the «inland» Tourism. A important plan actions intends generate an active relationship among the different institutions and from this development all the actions which will make a definite contribution to the relaunching of the thematic. It is consi- dered in

Leandro García González

159

Modelizacion, simulacion y caracterizacion acustica de materiales para su uso en acustica arquitectonica  

NASA Astrophysics Data System (ADS)

The global objective of this thesis consists on evaluating the viability of applying new sound absorbent materials that attempt, on one hand, to be an alternative to those materials classically used (as mineral wools) and, on the other hand, to offer a solution to one of the most important problems: the use of waste products of the textile industries by means of the recycled. For carrying out this study, some of the parameters that allow to characterize the acoustic behaviour of sound absorbent materials (such as the acoustic impedance, the acoustic absorption coefficient and the flow resistivity, among other) have been studied. Different experimental methods used to obtain these acoustic parameters have also been described. Among the methods presented in this work, the attention has been focused in those based on the acoustic impedance tube (Kundt tube). This technique presents advantages, for example, that only a small space in the laboratory is required as well as the samples of the testing materials are of small dimensions. The study has settled on three fundamental pillars: mathematical modelization, acoustic characterization of materials and numerical simulation. In the first place, after reviewing the main models and theories used in the acoustic evaluation of the porous and fibrous sound absorbent materials, a new mathematical model has been proposed and its validity is demonstrated for the type of studied materials. With regard to the acoustic characterization, diverse campaigns of measurements have been carried out with the purpose of obtaining the acoustic absorption coefficient and the flow resistivity of different type of materials. Finally, by means of a computer program based on the finite element method, the technique of the numerical simulation has been applied with the purpose of contrasting the obtained results experimentally, as well as for the evaluation of one of the most significant industrial applications from the acoustic point of view: the acoustic filters, that are devices designed to reduce the acoustic emission in a tube (as the expansion chambers in the exhaust pipes of the combustion engines). In a first phase of the study, it is observed that the obtained results agree with the experience and, in a second phase, a parametric study to evaluate the efficiency of this type of components is carried out. The numerical simulation presents the advantage of carrying out these studies without necessity of building the real models, with the saving in cost and time that this supposes. In this work, it has been sought to contribute to the knowledge of the acoustic behaviour of different type of materials and devices that are used to improve the acoustic isolation and acoustic conditioning.

Julia Sanchis, Ernesto

160

Nuovi farmaci antitrombotici in chirurgia ortopedica: dagli studi clinici all’uso nella pratica quotidiana  

Microsoft Academic Search

\\u000a Abstract  New oral anticoagulant drugs may improve the adherence of patients and of physicians to guidelines on the prophylaxis of venous\\u000a thromboembolism in major orthopaedic surgery. However, before translating the results of clinical trials into daily clinical\\u000a practice, more studies are needed, mainly in elderly patients and in those with a high risk of bleeding.

M. Moia; S. Braham

2010-01-01

161

Uso de soluções nutritivas no desenvolvimento e no estado nutricional de mudas de goiabeira: macronutrientes  

Microsoft Academic Search

Nutrition solutions in the culture of guava: effect in the development and nutricional state. The objective of this study was to evaluate the effect of different nutritional solutions on development and concentration of nutrients in guava cuttings. Two cv., Paluma and Século XXI, and four nutritional solutions were evaluated, in factorial scheme (2x4) with three replications. The cv. Paluma was

Claudenir Facincani Franco; Renato De Mello Prado

2006-01-01

162

Inequidades socioeconómicas en el uso de servicios sanitarios del adulto mayor montevideano  

Microsoft Academic Search

This study uses data from the 1999-2000 SABE survey to analyze socioeconomic inequities in healthcare access, utilization, and quality, for a sample of elderly individuals from Montevideo, Uruguay. We find horizontal inequity favoring the rich in the quality of access to medical visits (lower time spent travelling to the office and waiting in the office), in the probability of medical

Ana Balsa; Daniel Ferres; Máximo Rossi; Patricia Triunfo

2009-01-01

163

Use of a Telecamera as a Contrast Monitor USO di Una Telecamera Come Monitor di Contrasto.  

National Technical Information Service (NTIS)

An automatic system is described for aiding photographic surveys of the solar photospheric granulation which significantly influence the conditions for viewing. The emitted signals from a telecamera, and characteristics of a suitable optical system are an...

V. Croce G. A. Debiase F. Fabbri M. F. Toniolo

1972-01-01

164

Validacion de Una Version Preliminar del Child Abuse Potential Inventory para su Uso en Argentina.  

ERIC Educational Resources Information Center

The validity of the Child Abuse Potential (CAP) Inventory was tested with a sample of 40 child physical abusers and 40 nonabusers in Argentina. More than 97% of subjects were correctly classified as abusing or nonabusing individuals. The article is in Spanish. (CR)

Bringiotti, Maria Ines; Barbich, Alejandra; De Paul, Joaquin

1998-01-01

165

Conflictes armats i drets civils  

Microsoft Academic Search

En 1995 las Naciones Unidas ratificaban un protocolo sobre la RESPONSABILIDAD DE PROTEGER ante la pasividad internacional en muchos conflictos. En 2005 el Gobierno Español se mostraba dispuesto a participar activamente en la defensa de la población civil en caso de violación de sus derechos. En los últimos 50 años los conflictos del mundo han generado una gran cantidad de

Joaquim Alsina

1970-01-01

166

EFICIENCIA DE USO Y DINÁMICA DEL NITRÓGENO EN UNA ROTACIÓN CON Y SIN USO DE RESIDUOS 1 Nitrogen use efficiency and dynamics in a rotation with and without use of residues 1  

Microsoft Academic Search

A B S T R A C T With the objective of studying N use efficiency and dynamics in a rotation with and without management of residues, a labeled-N ( 15 N) experiment was established, in a volcanic soil (Typic Melanoxerand), under irrigation. 15 N-labeled micro-plots were installed on a 4-year rotation. 15 N was applied only once, as labeled

Erick Zagal; Nicasio Rodríguez; Iván Vidal; Glenn Hofmann

2003-01-01

167

COOPERAÇÃO E CONFLITO PELO USO DA ÁGUA EM RIOS INTERNACIONAIS: A BACIA DOS RIOS EUFRATES-TIGRE  

Microsoft Academic Search

Abstract This paper examines,the water use in international rivers and analyses the Tigris- Euphrates basin. The issue of water,use in river systems shared by more,than two countries starts gaining importance in 1815, when the first treaty that sought to create rules for navigation in international rivers was brought to force. From the 1920s on, the use of water has been

Armando Álvares Penteado-FAAP

168

USO DE MARCADORES ISOENZIMÁTICOS NA IDENTIFICAÇÃO DE POLIEMBRIÕES DO 'CITRAVO' (Citrus limonia Osb. X Poncirus trifoliata (L.) Raf.)1  

Microsoft Academic Search

With the objective to contribute with the reduction of disease vulnerability of Brazilian orchards, a new citrus rootstock cultivar was obtained at the Federal University of Lavras - UFLA, through controlled crosses between 'Rangpur-lime' (Citrus limonia Osb.), as female parent, and Poncirus trifoliata (L.) Raf., with the offspring named 'Citravo' (Citrus limonia Osb. X Poncirus trifoliata (L.) Raf.). For the

MÍVIA ROSA DE MEDEIROS; RENATA SILVA MANN; MARCELO VICHIATO; MOACIR PASQUAL

169

¿Qué la economía no es un juego? Evidencia del uso de Economía Experimental en cursos de Introducción a la Economía  

Microsoft Academic Search

Este artículo busca proponer alternativas de enseñanza para un curso de Introducción a la Economía, utilizando la herramienta de la Economía Experimental. De este modo, se introducen dos juegos Holt (1996) y Goeree and Holt (1999) en tres grupos distintos, los cuales se centran en los conceptos de mercado, leyes de oferta y demanda, producción agregada, empleo y precios. Estos

Juan Carlos Muñoz Mora; Sebastián Aparicio Rincón; Manuel Mesa Aristizábal

2011-01-01

170

Uso de imagens LANDSAT como subsídio ao estudo da dispersão de sedimentos na região da foz do rio São Francisco  

Microsoft Academic Search

The construction of a sequence of water reservoirs along the lower São Francisco river basin has caused a severe change in the supply of water and sediments to the coastal zone. We present in this paper a first attempt to use Landsat data to estimate de Suspended Sediment Content (SSC) of the coastal plume. A simple log model proposed by

João Antonio Lorenzzetti; Eduardo Negri

171

DHEW/USOE Task Force on Management of Student Assistance Programs: Preliminary Report to the Deputy Commissioner for Higher Education.  

ERIC Educational Resources Information Center

This document reviews the management of ten student assistance programs, including: the Basic Educational Opportunity Grants (BEOG), the State Student Incentive Grants (SSIG), the Supplementary Educational Opportunity Grants program (SEOG), the College Work Study program (CWSP), the National Direct Student Loan program (NDSL), the Guaranteed…

Phillips, John; And Others

172

Uso de gemas de ovos de aves hiperimunizadas contra Escherichia coli suína no controle da diarréia neonatal de leitões  

Microsoft Academic Search

The effect of yolks from birds hipperimmunized birds against Escherichia coli (E. coli) pathogenic for swine on the passive immunity of newborn piglets in a producer unit of piglets was studied. It was evaluated ELISA optical density (OD) of antibodies against E. coli, body weight and the frequency of diarrhea (FcD) in 137 newborn piglets born from 25 primiparous gilts

Andréa Machado Leal Ribeiro; Liliane Rudnik; Cláudio Wageck Canal; Lilian Ribeiro Kratz; Carolina Farias

2005-01-01

173

VIABILIDADE DO USO DA PROTEÍNA TEXTURIZADA DE SOJA COMO INGREDIENTE EM SUCEDÂNEO DE LEITE PARA BEZERROS1  

Microsoft Academic Search

The production of calves from dairy herds reared on whole milk is not economically viable. Different milk substitutes with animal or vegetal protein have been tested, but always showed allergic or practical management problems. The texturized soybean protein is obtained from whole soybean extruded, which takes a better digestibility and an inactivation of allergic principles. The objective of this trial

VERA LÚCIA BANYS; PAULO CÉSAR DE; AGUIAR PAIVA; ROBERTO MACIEL CARDOSO; LUIZ RONALDO DE ABREU; JUAN RAMÓN OLALQUIAGA PÉREZ; AIRDEM GONÇALVEZ DE ASSIS

174

Evaluación económica del uso de las celdas de combustible para generar energía utilizando biogás proveniente de un relleno sanitario  

Microsoft Academic Search

Using an unknown technology in our country and to keep in mind the volume of biogas pro- duced in the landfill of Doña Juana, this work is intended to make an economical evaluation of use fuel cells for energy generation. Once made this evaluation it showed that the project is attractive in a long period of time, but in practical

D. Espinel; E. Giraldo

175

El Uso de Pruebas Genéticas para Predecir Enfermedades: Implicaciones ÃÂticas, Legales, y Sociales (IELS)  

NSDL National Science Digital Library

Genetic testing to predict disease can be helpful to individuals and some families but poses ethical, legal, and social questions: Do you know your privacy rights when it comes to genetic testing? Does a doctor have a right to share your information with family? Would you allow a child to have genetic testing? Would you use genetic testing to choose the âÂÂrightâ embryo?

Linda Glenn (Alden March Bioethics Institute;)

2009-06-18

176

Uso do transporte ósseo no tratamento de perda óssea segmentar extensa da tíbia: estudo experimental em cães  

Microsoft Academic Search

The aim of this study was to evaluate the bone transport technique using the Ilizarov external fixator for the treatment of the extensive segmental bone defect induced in the tibia of seven dogs. An Ilizarov frame assembled with one proximal half-ring, one middle ring and one distal ring, all connected to each other, was used. Thirty percent of the tibia

S. C. Rahal; R. S. Volpi; L. C. Vulcano

2005-01-01

177

pRS4: UN VECTOR DE CLONACIÓN IDÓNEO PARA BACTERIAS ÁCIDO-LÁCTICAS DE USO ALIMENTARIO  

Microsoft Academic Search

The ability of pRS4, a cryptic plasmid from Pediococcus pentosaceus, as a selective cloning vector for lactic acid bacteria has been analysed. The results indicate that pRS4C1, a cloning vector from pRS4 can stably transform Lactobacillus plantarum, Pediococcus acidilactici and P. pentosaceus (three lactic acid bacteria used as starters in the food industry) but it does not transform Enterococcus faecalis

M. C. Rodríguez; M. T. Alegre

178

Validacion de Una Version Preliminar del Child Abuse Potential Inventory para su Uso en Argentina.  

ERIC Educational Resources Information Center

The validity of the Child Abuse Potential (CAP) Inventory was tested with a sample of 40 child physical abusers and 40 nonabusers in Argentina. More than 97% of subjects were correctly classified as abusing or nonabusing individuals. The article is in Spanish. (CR)

Bringiotti, Maria Ines; Barbich, Alejandra; De Paul, Joaquin

1998-01-01

179

Indagine conoscitiva aggiornata su aspetti somatici, neuropsicologici, comportamentali e neuro- psichiatrici conseguenti all'uso ricreazionale di MDMA  

Microsoft Academic Search

A survey on the physiological, behavioural, psychological and neuro-psychiatric aspects of the recreational use of MDMA Ecstasy as a recreational drug has gained increasing popularity all over the world. This research study presents the de- scription of the physiological, behavioural, psychological and neuro-psychiatric effects of MDMA used alone or in associa- tion with cannabis and alcohol as reported by a

Giovanni Giannelli; Marusca Stella; Lidia Agostini; Monia Bianchi

2001-01-01

180

Uso racional de medicamentos: uma abordagem econômica para tomada de decisões Rational drug use: an economic approach to decision making  

Microsoft Academic Search

The present article approaches rational drug use (RDU) from the economical point of view. The implementation of RDU implies in costs and involves acquisition of knowledge and behav- ioral changes of several agents. The difficulties in implementing RDU may be due to shortage prob- lems, information asymmetry, lack of informa- tion, uncertain clinical decisions, externalities, time-price, incentives for drug prescribers

Daniel Marques Mota; Marcelo Gurgel; Carlos da Silva; Elisa Cazue Sudo; Vicente Ortún

181

Trabajo remunerado, trabajo doméstico y salud: las diferencias cualitativas y cuantitativas entre mujeres y varones  

Microsoft Academic Search

This article presents the relationship between wage labor, housewifery, and health from a gender perspective. The relationship between the two types of work determines the char- acteristics and meaning of daily life. The methodology combined quantitative and qualitative techniques. An individual questionnaire was applied to 256 male and 121 female workers (n = 377) in a modern pharmaceutical factory in

Adriana Cecilia Cruz; Mariano Noriega

2003-01-01

182

Relación entre turismo, género y sexo. El caso de Buzios - Brasil  

Microsoft Academic Search

The relationship between sex and tourism has followed different paths starting from the Gay \\/ Lesbian friendly market to nudist tourism or prostitution. Not withstanding, there are sill few initiatives to stop this kind of tourism that brings with its huge social problems and scandalizes the public opinion. This is probably due to the fact that from an historic point

Juana A. Norrild

2007-01-01

183

Stress e qualidade de vida em Magistrados da Justiça do Trabalho: diferenças entre homens e mulheres  

Microsoft Academic Search

Occupational stress is a frequent theme at present. Occupational stress in Brazilian judges in charge of labor -related cases, quality of life, work-related stressors and coping strategies were investigated. Seventy-five judges answered five instruments sent to them through the class association. They rated the perceived occupational stress level as 8 on a rating scale of 0 to 10. It was

Marilda E. Novaes Lipp; M. Sacramento Tanganelli

2002-01-01

184

Cultura médica e decisões reprodutivas entre mulheres infectadas pelo vírus da Aids  

Microsoft Academic Search

HIV+ pregnant women face a range of medical information, prescriptions and practices that transform this period into a unique situation relative to previous pregnancies and experiences. This article tries to show which are the factors that affect HIV+ pregnant women's reproductive choices, especially as regards type of delivery and the decision on feminine sterilization adopted, as well as their implications.

Daniela Riva Knauth; Regina Maria Barbosa; Kristine Hopkins; Marion Pegorario; Regina Fachini

2002-01-01

185

Atividade anti-retroviral e propriedades farmacocinéticas da associação entre lamivudina e zidovudina  

Microsoft Academic Search

A lamivudina (3TC) e a zidovudina (ZDV) são agentes anti- retrovirais indicados para o tratamento de infecção pelo HIV. Eles são análogos nucleosídeos, que passam por reações intracelulares de fosforilação e atuam inibindo a enzima transcriptase reversa. Os compostos trifosforilados formados se ligam à cadeia de DNA pró-viral impedindo sua replicação. A terapêutica anti-retroviral utilizando apenas um fármaco ocasiona, freqüentemente,

Jacqueline de Souza; Sílvia Storpirtis

2004-01-01

186

COMPETI?ˆO ENTRE PLANTAS DE MILHO E SORGO (COMPETITION BETWEEN MAIZE AND SORGHUM PLANTS)  

Microsoft Academic Search

ñ The maize composite ESAM-1 was cultivated in mixed planting with the single cross maize AG-9012 and with the single cross sorghum AG-1017. The objective was to study the reaction of the composite to competition with both crops (maize and sorghum) aiming to contribute with infomation about the use of sorghum as a ìconstant genotypeî in the genetically stratified mass

PAULO S; RGIO LIMA E SILVA

187

New York: Les ecoles entre SURR et STAR (New York: Schools between SURR and STAR).  

ERIC Educational Resources Information Center

Three problems of New York City (New York) schools--overpopulation, low academic standards, violence--are examined, and an effort led by parent and teacher organizations to improve conditions is described. Threatened closings (schools under registration review, SURR) and a program of violence reduction (Straight Talk about Risks, STAR) are noted.…

Ueberschlag, Roger

1994-01-01

188

Entre Nous: A Tutorial Approach to the Teaching of Business French.  

ERIC Educational Resources Information Center

Suffolk University (Massachusetts) has developed a degree program in international marketing in French and Spanish that links curricula in the economics department and the department of humanities and modern languages. Language tutorials are mandatory for students in the international economics major. The tutorials are taught by native French- and…

Chaisson, Arthur P.

189

Sur la zone de contact entre une plaque élastique et un obstacle rigide  

NASA Astrophysics Data System (ADS)

This Note deals with the contact problem between an elastic plate and a rigid obstacle ?. The plate is clamped at its edges and submitted to vertical forces f?L(?). The obstacle problem consists in finding the shape of the plate u and the contact set I(f) between the plate and the obstacle. In a first step, we give a result, which we extend to the case of plates, a theorem established by D. Kinderlehrer and G. Stampacchia dealing with the smoothness of the contact set in the case of a two-dimensional membrane. In a second step, we give a stability theorem which links the changes of the external forces to the changes of the contact set. To cite this article: A. Léger, C. Pozzolini, C. R. Mecanique 335 (2007).

Léger, Alain; Pozzolini, Cédric

2007-03-01

190

La reforma de la contratación en el mercado de trabajo: entre la flexibilidad y la seguridad  

Microsoft Academic Search

El actual debate sobre la reforma laboral pendiente en España se centra demasiado en el abaratamiento del despido o las modalidades de contratación como únicas formas de flexibilizar el mercado de trabajo. Este tipo de propuestas, además, choca con la percepción de una fuerte pérdida de seguridad de los trabajadores. En este trabajo nos planteamos cómo conciliar una mayor flexibilidad

Vicente Royuela; Manuel Sanchis

2010-01-01

191

Récentes adipokines : un lien entre l’obésité et l’athérosclérose  

Microsoft Academic Search

Today, cardiovascular diseases (CVD) remain the principal cause of death in industrialized countries and are linked to obesity and metabolic syndrome. Metabolic syndrome is characterized by changes in arterial blood pressure, glucose metabolism, lipid and lipoprotein profiles in addition to inflammation. Adipose tissue produces many cytokines and secretory factors termed adipokines. Intra-abdominal (visceral) adipose tissue in particular, rather than peripheral,

D. Gauvreau; N. Villeneuve; Y. Deshaies; K. Cianflone

2011-01-01

192

Les usages des sciences économiques en Russie entre les années 1960 et 1990  

Microsoft Academic Search

[eng] Abstract Analysis of the development of Russian (Soviet) economics over the last thirty years shows a series of successive changes in the relations between macroeconomics and microeconomics, and among the subfields of political economics, mathematical economics, and global economics. During this period, economists' relations with government took varied forms, from those who sought autonomy to others who voluntarily and

Natalia Chmatko

2002-01-01

193

Comprendre le dialogue: l’interaction entre les micro-organismes et l’hôte  

Microsoft Academic Search

RésuméLe tube digestif des mammifères est beaucoup plus complexe qu’on ne le pensait précédemment. Une couche unique de cellules épithéliales recouvre la totalité des voies digestives, représentant ainsi l’interface la plus étendue avec l’environnement. L’épithélium digestif est un capteur de l’environnement intraluminal et contrôle non seulement les fonctions digestives, absorptives et sécrétoires, mais de plus transmet des informations aux systèmes

Alessio Fasano

2009-01-01

194

Consumo de drogas entre adolescentes: resultados de la Encuesta Nacional de Adicciones, 1998  

Microsoft Academic Search

Objective. The aim of this paper is to describe drug and associated factors use among adolescents (12 to 17 years of age). Material and Methods. Data come from the re- cent Encuesta Nacional de Adicciones, 1998 (National Sur- vey on Addictions) undertaken in urban areas of Mexico. A probabilistic, multi-stage, stratified cluster sampling design was used to select the study

Ma Elena Medina-Mora; Patricia Cravioto; Jorge Villatoro; Clara Fleiz; Fernando Galván-Castillo; Roberto Tapia-Conyer

2003-01-01

195

Descubrimiento de precios entre mercados de opciones y contado. El caso del Ibex35  

Microsoft Academic Search

This study investigates the lead-lag relationships between option and index markets for the Spanish market during 1997. The results indicate that price changes in the underlying market lead the option market with the excep- tion of the crisis (Asian crisis) that took place in the stock markets around the world. Probably, differences on tra- ding platforms may have an influence

Pilar Corredor Casado; Rafael Santamaría Aquilué

196

Geología y registros magnéticos entre arroyo La Tapera y Santa Clara del Mar, Mar del Plata  

Microsoft Academic Search

Geology and magnetic records between Arroyo La Tapera and Santa Clara del Mar, Mar del Plata. Paleomagnetic studies were carried out in Pleistocene-Holocene sedimentary sequences exposed between Arroyo La Tapera and Santa Clara del Mar in Mar del Plata. The sediments exposed in the lower part of the La Tapera and Camet sections, which apparently belong to the Ensenada Formation,

Juan Carlos BIDEGAIN; Margarita L. OSTERRIETH; Adrianus J. VAN VELZEN; Yamile RICO

197

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

198

Alcohólicos Anónimos (AA): aspectos relacionados con la adherencia (afiliación) y diferencias entre recaídos y no recaídos  

Microsoft Academic Search

SUMMARY The work of Alcoholics Anonymous (AA) in fighting against alcohol abuse and alcoholism has placed it as an institution of great importance in Mexico and around the world. Although its labor has been subject for controversy, there is a lot of evidence that frequent attendance and affiliation to the groups and sessions can be very helpful for many individuals.

Reyna Gutiérrez Reynaga; Patricia Andrade Palos; Alberto Jiménez Tapia; Gabriela Saldívar Hernández; Francisco Juárez García

2009-01-01

199

La Communicacion entre los Centros de Investigacion en Educacion (Communication among Educational Research Centers).  

ERIC Educational Resources Information Center

In Latin America there is a lack of communication concerning educational research. This lack has been underlined in many regional meetings, but no action has been taken. Possible steps that would lead to improvement include circulation of research summaries, both for completed and current works, efforts by research centers to organize meetings,…

Schiefelbein, Ernesto

1972-01-01

200

Surveillance sentinelle du VIH chez les femmes enceintes en Mauritanie entre 2001 et 2007  

Microsoft Academic Search

Résumé  Selon le rapport 2008 sur l’épidémie de sida dans le monde, 33 millions de personnes vivent avec le VIH\\/ sida. L’Afrique intertropicale\\u000a est la région du globe la plus touchée. Le premier cas de sida en Mauritanie a été décrit en 1987. La prévalence nationale\\u000a du VIH\\/sida dans le pays est estimée à moins de 1 %. La surveillance sérologique

F. Z. Fall-Malick; A. O. Bara; M. Lam; M. Mint Beibacar; K. Ba; H. Ba; I. Ould Ghady; A. Ould Horma; N. C. Toure-Kane; S. Mboup; B. Lo

2010-01-01

201

Interactions between antiepileptic drugs and herbal medicines (Interacciones entre fármacos antiepilépticos y medicinas herbales)  

Microsoft Academic Search

As a therapeutic class, antiepileptic drugs (AEDs) have a high propensity to interact and many interactions with concomitant medications have been described. Increasingly, herbal medicines are often used by patients with epilepsy and the risk that these may interact with their AED medication is now being realised. The purpose of this review is to highlight the interactions that have been

Cecilie JOHANNESSEN LANDMARK; Philip N. PATSALOS

2008-01-01

202

Entre Dos Mundos/Between Two Worlds: Bicultural Development in Context  

ERIC Educational Resources Information Center

How do Mexican immigrant adolescents balance different, and often oppositional, cultural influences in the acculturation process? In this article, we explore how acculturating adolescents absorb cultural messages and go about creating their (multiple) identities. Guided by Alternation Theory, in-depth qualitative interviews were conducted with 12…

Bacallao, Martica L.; Smokowski, Paul R.

2009-01-01

203

Le Danois et l'entre-deux-mondes (Danish and "Betweeness").  

ERIC Educational Resources Information Center

Phonological, syntactic, and morphological aspects of Danish are viewed as symbolic and representative of the geographic, geological, and meteorological "betweeness" or versatility of the country and its culture. (MSE)

Van Lier, Henri

1990-01-01

204

Códigos éticos: análisis de la eficacia de su implantación entre las empresas españolas cotizadas  

Microsoft Academic Search

Ethical codes: analysing the efficacy of implantation amongst quoted Spanish companies Ethical codes or internal corporate social responsibility (CSR) codes proliferate in the business world within the context of the debate about self-regulation as an alternative or complement to traditional regulation. They are drawn up, supervised and controlled within the bosom of a company and at its insistence. This article

Carmen Valor; Alberto Aguilera

205

Correlación entre dimensiones de personalidad de marca y la marca emocional. Estudio en Cadena de Farmacias  

Microsoft Academic Search

The main objective of this article is to explore whether or not a relation exists between the theoretical concept of a brand personality and an emotional brand. The product of reference was a pharmacy franchise chain. The research adopted a non-probability sampling by convenience, including 295 people. Correlational analysis of the data gathered by survey was made using Cronbach's alpha

Saavedra Torres; José Luis; Oscar Colmenares

206

Actividades interrelacionadas entre el nino y la familia (Interrelated Activities between the Child and the Family).  

ERIC Educational Resources Information Center

Offers a rationale for parent involvement in early childhood education. Describes the benefits of mother-child gymnastics in terms of the development of motor skills and positive attitudes toward school. Highlights particular exercises and games. (AC)

Veglio, Ana M.

1993-01-01

207

Félix Rebollo Sánchez, Antonio Machado entre la Literatura y el Periodismo  

Microsoft Academic Search

Volumen de carácter ensayístico centrado en la figura de Antonio Machado Ruiz, nacido en Sevilla y muerto en Collioure (Rosellón, Francia), mientras abandonaba España. Félix Rebollo trata de ofrecer en cuatro breves capítulos los rasgos definitorios de la obra poética del biografiado al tiempo que deja entrever las características del pensamiento político y de la filosofía social recogidas en la

María Encarnación Gómez Rojo

2011-01-01

208

Pour un échange entre psychanalyse et sciences de l'esprit  

Microsoft Academic Search

The debate concerns the commun object of psychoanalysis (PA) and neurosciences (NCS). PA and NCS constitute different methods of description, analysis and comprehension of a single reality, but each approach constructs a different representation of it because each is based upon a different methodology. Is PA a science or, to which kind of science does PA belong ? This point

Nicolas Georgieff

2005-01-01

209

Le Pop Art aux États-Unis: entre subversion et conformisme  

Microsoft Academic Search

This paper analyzes Pop Art's oscillation between subversion and conformism. In fact, to some, it was an exaltation of the American way of life as it mirrored the general well-being that people living in an affluent society experienced. Conveyed by Pop Art, the media image of the American world seemed to celebrate, by fetishizing it, American society's self-image. However, the

Éliane Elmaleh

1997-01-01

210

Homicidios en Medellín, Colombia, entre 1990 y 2002: actores, móviles y circunstancias  

Microsoft Academic Search

In Medellín, Colombia, homicide has been the first cause of morbidity and mortality for 20 years. Medellín has the highest homicide rates of all major cities in Latin America. This study describes the victims, motives, and circumstances in homicides in Medellín from 1990 to 2002. The period included 55,365 homicides, of which 1,394 were randomly studied. Of this sample, 93.6%

Marleny Cardona; Héctor Iván García; Carlos Alberto Giraldo; María Victoria López; Clara Mercedes Suárez; Diana Carolina Corcho; Carlos Hernán Posada; María Nubia Flórez

2005-01-01

211

Cirugía menor ambulatoria dermatológica y crioterapia. Estudio comparativo entre un dermatólogo y médicos de familia  

Microsoft Academic Search

IntroductionLack of diagnostic skill in cutaneous surgery may lead to erroneous and potentially detrimental therapies. This study compares the diagnosis and treatment in cutaneous surgery, including cryotherapy, between a dermatologist and family physicians.

J. Graells; A. Espinola; C. Barrio; M. D. Muñoz; A. Román; N. Parellada

2007-01-01

212

Etude du diagramme d'équilibre entre phases du système ternaire germanium-étain-tellure  

Microsoft Academic Search

The Ge?Sn?Te ternary system has been studied by thermal analysis (DTA and DSC), radiocrystallography on powders and metallography. No ternary compound has been found; the vertical section Ge?SnTe is a true pseudobinary section, while GeTe?SnTe presents a continuous solid solution.The study of six vertical sections allows us to identify two ternary reactions in the solid state (one of eutectoid type

L. Baldé; B. Legendre; A. Balkhi

1995-01-01

213

Relación entre actividad enzimática y biomasa de ensambles fitoplanctónicos en el sistema pelágico  

Microsoft Academic Search

In environments with drastically fluctuating conditions, physiological and biochemical adaptations can be important for the structuration of phytoplankton assemblages. The objective of this study was to establish whether the enzymatic activity of the phytoplankton, an indicator of its dominant internal metabolism, is related to the autotrophic biomass. The geographic study area covered the South Shetland Islands (62°S), Mejillones Bay (22°S),

José L. Iriarte; Renato A. Quiñones; Rodrigo R. González; Cynthia P. Valenzuela

2007-01-01

214

Induction de préséances entre bourgeons cotylédonaires par des stimulations mécaniques chez Bidens pilosus L  

Microsoft Academic Search

\\u000a Abstract  Pricking one of the cotyledons of aBidens pilosus L. (var.radiatus) seedling decapitated just above the cotyledons four times in succession induces after one minute the dominance of buds on\\u000a the unaffected side.

Marie Odile Desbiez

1971-01-01

215

Correlations entre les proprietes physico-mecaniques des roches et le comportement des granulats manufactures  

Microsoft Academic Search

\\u000aRsum  La revue des essais d'acceptation des granulats, quant leur qualit mcanique ou leur rsistance aux agents atmosphriques,\\u000a montre qu'il existe de trs nombreux essais empiriques en usage dans le monde mais pratiquement aucun n'est employ universellement.\\u000a Dans cette communication il est pass en revue les divers modes de sollicitation imposs au granulat depuis sa production\\u000a en carrire jusqu' son emploi,

Ballivy Gérard; Dayre Michel

1984-01-01

216

Entre analyse linguistique et théorie générale du droit: La Nomographie de Jeremy Bentham  

Microsoft Academic Search

Résumé  Les travaux récents ont permis de rendre justice à la théorie du langage qu’a élaborée Bentham et d’expliquer les enjeux théoriques\\u000a de son attachement aux mots. Il est donc désormais possible de s’attacher à comprendre les enjeux langagiers à l’oeuvre dans\\u000a les différents champs de la pensée benthamienne, et plus particulièrement au sein de sa théorie générale du droit. Dès

Malik Bozzo-Rey

2009-01-01

217

Effet du flux massique sur les mecanismes d'echange entre deux sous-canaux interconnectes  

Microsoft Academic Search

The present work is under taken in order to improve the knowledge on the hydrodynamic behavior of flow through rod bundles. Focus will be on the study of diffusion mechanisms under different flow conditions reaching hydrodynamic equilibrium, i.e., no net mass transfer between subchannels. This research is divided in two parts. The first one is devoted to the experimental study

Abbes Bellil

1998-01-01

218

Biologie comparée des interactions entre les macrophages et Trypanosoma cruzi, Leishmania spp. et Toxoplasma gondii  

Microsoft Academic Search

Macrophages have a central role in the immune system by eliminating a lot of pathogens. Nevertheless, they are often infected by pathogenic microorganisms in particular parasitic protozoa. They thus play the role of host cell by harbouring the intracellular survival and multiplication of these pathogens. Various mechanisms (receptors\\/ligands interactions, enzymes…) are involved in recognition and adhesion steps. When suitably activated,

Bernard Vray

1998-01-01

219

Informer le patient en psychiatrie : entre pratique clinique et réflexion anthropologique  

Microsoft Academic Search

Social isolation has got to be one of the greatest losses in mental illness. For many authors, people with mental disease can have no friends, no spouse, and sometimes no family. Two thirds of patients with schizophrenia return to their parents’ house when discharged from a hospital after the first psychotic fit. Family members generally receive very little education as

A. Olivero; J. Palazzolo

2008-01-01

220

Asociación entre el virus XMRV y enfermedades humanas: preguntas y respuestas  

Cancer.gov

El XMRV es un retrovirus del que se informó por primera vez en 2006 como una causa potencial del cáncer de próstata. Está estrechamente relacionado con los virus de leucemia murina, los cuales causan una amplia variedad de cánceres así como enfermedades inmunológicas y neurológicas en ratones.

221

A relação entre escolaridade e ocupação dos jovens no Distrito Federal: Uma análise socioespacial  

Microsoft Academic Search

A ocupação territorial no Distrito Federal (DF) é marcada pela segregação socioespacial. Por conta da segregação, a dinâmica interna de ocupação originou uma organização espacial diferenciada das demais cidades do país, na qual a restrição à população é visível aos olhos, embora não se deixe desvelar totalmente. A concentração dos postos de trabalho no Plano Piloto e a exigência cada

Sílvia Silva; Cavalcante Leite; Karla Christina; Batista de França

222

Les opérations de restructuration des firmes agroalimentaires multinationales entre 1987 et 2003  

Microsoft Academic Search

Based on a neo-institutionalist theoretical framework and using the Agrodata databank, the present paper analyses the main drivers underlying the restructuring operations of the top 100 multinational food processing enterprises worldwide and draws the map of the world's new agri-food landscape. World's agri-food oligopoly came out during these last decades concentrating an ever increasing financial and economic power (in 2002,

N. Ayadi; J. L. Rastoin; S. Tozanli

2006-01-01

223

Legume Lectins Inhibit Human Parainfluenza Virus Type 2 Infection by Interfering with the Entr  

PubMed Central

Three lectins with different sugar binding specificities were investigated for anti-viral activity against human parainfluenza virus type 2 (hPIV-2). The lectins, concanavalin A (Con A), lens culinaris agglutinin (LCA) and peanut agglutinin (PNA), inhibited cell fusion and hemadsorption induced by hPIV-2. Virus nucleoprotein (NP) gene synthesis was largely inhibited, but fusion (F) and hemagglutinin-neuraminidase (HN) gene syntheses were not. An indirect immunofluorescence study showed that Con A inhibited virus NP, F and HN protein syntheses, but LCA did not completely inhibit them, and that PNA inhibited only NP protein synthesis. Using a recombinant green fluorescence protein-expressing hPIV-2, without matrix protein (rghPIV-2?M), it was found that virus entry into the cells was not completely prevented. The lectins considerably reduced the number of viruses released compared with that of virus infected cells. The lectins bound to cell surface within 10 min, and many aggregates were observed at 30 min. Con A and LCA slightly disrupted actin microfilaments and microtubules, but PNA had almost no effect on them. These results indicated that the inhibitory effects of the lectins were caused mainly by the considerable prevention of virus adsorption to the cells by the lectin binding to their receptors.

Uematsu, Jun; Koyama, Aoi; Takano, Sayaka; Ura, Yukari; Tanemura, Miho; Kihira, Sahoko; Yamamoto, Hidetaka; Kawano, Mitsuo; Tsurudome, Masato; O'Brien, Myles; Komada, Hiroshi

2012-01-01

224

L'Harmonisation des langues maliennes: entre l'Integration nationale et régionale  

NASA Astrophysics Data System (ADS)

The standardization of Malian languages, which began in the period after independence, has been an educational reform guided more by linguists than by any institutional framework laid down by the political authorities of the country. This situation has permitted the technical application of a scientific strategy, but it has not led to widespread and general acceptance of the formulas which have been worked out. The consequent opposition between technical and political considerations, which have admittedly not always been in conflict, has been complicated by a set of additional factors which have made it difficult to reconcile internal (national) harmonization, dictated by local tendencies and balances between languages, and the need to respect the (regional) ecolinguistics of the country, whose linguistic and sociocultural divisions frequently extend well into other countries of the sub-region. This conflict is illustrated by the example of Malian languages with a wide regional distribution — Bamanan (Bambara) and Fulfulde (Fulani) — and by that of languages with a narrower distribution such as Bomu and Syenara-Mamara. The standardization of orthography and the creation of terminology in the MAPE (Mandingo-Peul) Project are the manifestation of a general acceptance of regionalism, while the choice of central, standard languages has often been made without regard for regional factors.

Ouane, Adama

1991-03-01

225

Unintended Cultivation, Shifting Baselines, and Conflict between Objectives for Fisheries and Conservation.  

PubMed

The effects of fisheries on marine ecosystems, and their capacity to drive shifts in ecosystem states, have been widely documented. Less well appreciated is that some commercially valuable species respond positively to fishing-induced ecosystem change and can become important fisheries resources in modified ecosystems. Thus, the ecological effects of one fishery can unintentionally increase the abundance and productivity of other fished species (i.e., cultivate). We reviewed examples of this effect in the peer-reviewed literature. We found 2 underlying ecosystem drivers of the effect: trophic release of prey species when predators are overfished and habitat change. Key ecological, social, and economic conditions required for one fishery to unintentionally cultivate another include strong top-down control of prey by predators, the value of the new fishery, and the capacity of fishers to adapt to a new fishery. These unintended cultivation effects imply strong trade-offs between short-term fishery success and conservation efforts to restore ecosystems toward baseline conditions because goals for fisheries and conservation may be incompatible. Conflicts are likely to be exacerbated if fisheries baselines shift relative to conservation baselines and there is investment in the new fishery. However, in the long-term, restoration toward ecosystem baselines may often benefit both fishery and conservation goals. Unintended cultivation can be identified and predicted using a combination of time-series data, dietary studies, models of food webs, and socioeconomic data. Identifying unintended cultivation is necessary for management to set compatible goals for fisheries and conservation. Cultivo Accidental, Líneas de Base Cambiantes y el Conflicto entre los Objetivos para las Pesquerías y la Conservación. PMID:24665891

Brown, Christopher J; Trebilco, Rowan

2014-06-01

226

Esquizofrenia y trastorno en el consumo de sustancias: prevalencia y character?sticas sociodemogr?ficas en la poblaci?n Latina  

PubMed Central

El interés por comprender la co-morbilidad de la esquizofrenia y el trastorno en el uso de sustancias, ha aumentado debido al incremento de este diagnóstico, a los efectos negativos observados en el sujeto y a los costos en los servicios de salud. Este trastorno dual puede tener efectos dramáticos en el curso clínico del trastorno psicótico tales como: mayores recaídas, re-hospitalizaciones, síntomas más severos, no adherencia al tratamiento antipsicótico, cambios marcados del humor, aumento en el grado de hostilidad e ideación suicida, así como alteraciones en otras áreas del funcionamiento incluyendo violencia, victimización, indigencia y problemas legales. La literatura proveniente en particular de Estados Unidos y Europa sugiere que el rango de prevalencia para este diagnóstico puede oscilar entre el 10% hasta el 70%. En este estudio, revisamos la prevalencia del diagnóstico dual de esquizofrenia y trastorno en el uso sustancias, así como sus características sociodemográficas, con base en la literatura disponible alrededor del mundo dando énfasis en la poblacion latina. A pesar de que este diagnóstico es ampliamente aceptado, se conoce poco sobre su prevalencia en la población latina, sobre los factores ambientales, demográficos, clínicos y otras características de estos individuos. Un mejor conocimiento sobre este diagnóstico permitiría mejorar los métodos para la detección y adecuada valoración del trastorno en el uso de sustancias en personas con trastornos metales severos como la esquizofrenia.

Jimenez-Castro, Lorena; Raventos-Vorst, Henriette; Escamilla, Michael

2012-01-01

227

Estereotipos Sexuales y su Relaci?n con Conductas Sexuales Riesgosas1,2,3  

PubMed Central

Resumen Los estereotipos sexuales son creencias generalmente aceptadas y poco cuestionadas que podrían contribuir a cómo los hombres y las mujeres debemos expresar nuestra sexualidad. Los objetivos de este estudio eran identificar cuántos hombres y mujeres heterosexuales en Puerto Rico endosaban ciertos estereotipos acerca de la sexualidad masculina y femenina y explorar la relación entre el endoso de estos estereotipos sexuales y las actitudes hacia el condón masculino y su uso en relaciones sexuales vaginales Llevamos a cabo un estudio descriptivo-correlacional mediante el cual le administramos dos escalas, una sobre sexualidad masculina y otra sobre sexualidad femenina a un grupo de 429 personas heterosexuales. Encontramos que los hombres endosaron estereotipos sexuales masculinos y femeninos más que las mujeres y que estos tienden a tener una visión más conservadora respecto a la sexualidad femenina que la que tienen sobre su propia sexualidad. Las mujeres, por otra parte, tienden a ver su propia sexualidad y la sexualidad masculina en términos menos estereotipados y más equitativos. También encontramos que a mayor endoso de creencias tradicionales sobre la sexualidad masculina y femenina, peor la actitud hacia el uso del condón masculino. Sin embargo, el endosar estereotipos sexuales masculinos y/o femeninos no se relacionó con el uso del condón. Estos hallazgos contradicen la literatura que sugiere que estos estereotipos sexuales y de género resultan en conductas sexuales de alto riesgo, lo cual tiene implicaciones importantes para el desarrollo e implementación de programas de prevención.

Perez-Jimenez, David; Orengo-Aguayo, Rosaura E.

2012-01-01

228

Comparación entre tres métodos manuales empleados en la cuenta diferencial de leucocitos respecto a un equipo automatizado  

Microsoft Academic Search

Introduction Introduction Introduction Introduction Introduction. Leukocyte differential counts, based in blood films is a routinely method in clinical laboratories, however, results are imprecise and biased, particularly for big cells and cells circulating in small number. Objective Objective Objective Objective Objective. Comparison between results obtained from three manual methods, based in blood films review, and the results obtained from a cell

Eduardo Brambila; Rosalba Castillo-Guerra; Patricia Lozano-Zarain

2003-01-01

229

Les échanges industriels entre la France et les pays d'Europe centrale et orientale : premières tendances de la spécialisation  

Microsoft Academic Search

[ger] Der Industriehandel zwischen Frankreich und den mittel- und osteuropaischen Lândern: erste Spezialisierungstendenzen . Der Austausch zwischen Frankreich und den mittel- und sischen Exporte von Investitionsgùtem und High-Tech- osteuropâischen Lândern hat seit dem Zusammenbruch Erzeugnissen (Elektronikgeràte, Prazisionsinstrumente) des Rats fur Gegenseitige Wirtschaftshilfe (COMECON) gefôrdert. im Jahre 1990 stark zugenommen, wenn auch seine Handelstrôme mit diesen Lândern betragsmâBig noch . recht

Béatrice Colin-Sédillot

1994-01-01

230

Facteurs associés à l?opposition au don d’organes en France entre 1996 et 1999  

Microsoft Academic Search

Objective: The demand for organ transplantation exceeds organ donation in France and refusal to organ donation remains close to 30%. This study analysed risk factors associated with refusal of organ donation.Study design: Retrospective study.Patients: All potential organ donors registered by the French transplantation agency between 1996 and 1999 were included, excepted those with a contraindication to organ procurement or a

V Demiguel; C Boileau; S Cohen; D Noury; F Bonnet; P Tuppin

2001-01-01

231

Pourquoi faut-il < apprivoiser > la confiance entre tous pour cultiver un processus de developpement local durable ?  

PubMed

Un processus de développement territorial durable représente une organisation sociale caractérisée par son unicité propre au territoire d'implémentation. Cette notion de territoire constitue un fait humain dont le développement intègre le bien-être collectif et individuel au travers d'une démarche intersectorielle et pluridisciplinaire. Lors de la réalisation de projets communs, la dynamique partenariale peut transformer les relations interpersonnelles et favoriser l'émergence de liens de confiance au cœur du processus de développement local durable. Cette confiance engendre la constitution d'une intelligence territoriale collective basée sur les savoirs et savoir-faire individuels et sectoriels qui forme le patrimoine immatériel commun, pour chacun des sociétaires du processus de développement territorial durable. Mais cette confiance partenariale reste fragile car elle constitue un fait humain. PMID:24737811

Decoster, Dominique-Paule

2014-03-01

232

Asociación entre el polimorfismo genético de la interleucina-1? (3953 T\\/C) y la hernia discal lumbar sintomática  

Microsoft Academic Search

ObjectiveTo evaluate the association between the presence of the genotype of certain genetic polymorphisms (GP) of the cytokine and oxide nitric synthase (NOS) and the development of lumbar herniated disc (LHD).

J. Paz Aparicio; E. López-Anglada Fernández; H. Montes Prieto; J. Pena Vázquez; I. Fernández Bances; V. Folgueras Henriksen; P. López Fernández; J. C. López-Fanjúl Menéndez; E. Valle Garay; V. Asensi Álvarez

2010-01-01

233

Abordaje integral de un caso complejo de diabetes mellitus en domicilio entre la gestora de casos y la enfermera comunitaria  

Microsoft Academic Search

We present the case of a patient with long-term and clinically complex Diabetes Mellitus. She was taking part in the home care program in Primary Care. The complications of her DM affected her quality of life: blindness, kidney failure, treated with hemodialysis, and a cerebrovascular attack.We describe the evaluation following Virginia's Henderson model. This evaluation was made in the patient's

Marta Prats-Guardiola; Rosa María López-Pisa

2010-01-01

234

Tensión diplomática entre Colombia y Ecuador durante 2006-2009: una mirada desde la teoría de juegos  

Microsoft Academic Search

Resumen Este documento centra su análisis en la tensión diplomática que sostuvieron Colombia y Ecuador durante el periodo 2006-2009, a partir de las fumigaciones aéreas que Colombia realizó en la zona de frontera con el territorio ecuatoriano, así como el ataque realizado por el ejército colombiano al campamento de las Fuerzas armadas revolucionarias de colombia (Farc), en donde fue abatido

Santiago Arroyo Ma; Juan D. Bolañosb

2010-01-01

235

Étude de la transition entre le gaz atomique et le gaz moléculaire dans deux cirrus de la boucle céleste nord  

NASA Astrophysics Data System (ADS)

The infrared (IR) cirrus clouds observed at high Galactic latitude are excellent candidates to study the transition between the atomic gas and the molecular gas. In this thesis, two potential sites of H2 formation have been discovered in the North Celestial Loop (l = 135°, b = 40°) through examining the far-IR-Hl ratio and looking for an excess over that expected from an atomic medium. I call these sites the Spider and Ursa Major fields. The comparison between the IR excess map and the 12CO (J - 1 - 0) data from the Five College Radio Astronomical Observatory (resolution = 45 arcsec) shows that the IR excess peaks do not coincide with the 12CO peaks. The absence of coincidence is explained by (i) a density too small to allow CO excitation, (ii) insufficient CO self-shielding or (iii) variations of the dust properties. The comparison between 12CO data and Hi data from the Dominion Radio Astrophysical Observatory (resolution = 1 arcmin) is in agreement with the models! that predict CO formation where large velocity shears and turbulence dissipation are observed. OH observations of 108 locations over the two diffuse clouds from the Green Bank Telescope (resolution = 7 arcmin) are analyzed. OH is a precursor molecule to CO and its formation requires H2. The coincidence between the OH emission peak and the IR excess peak indicates that OH could be a better tracer of H2 than CO in these low-density regions. 12CO (7 = 1-0) and 13CO (J = 1 -0) observations from the Institut de Radioastronomie Millimétrique and 12CO ( J = 2 - 1) observations from the James Clerk Maxwell Telescope (resolution = 20 arcsec) are analyzed on a small number of fields in both regions. Using a large velocity gradient model, we found smaller densities at the location of the IR excess peak while self-shielding should be efficient given the computed column densities.

Barriault, Léo

2010-11-01

236

Modelo Juan XXIII, Santiago de los Caballeros, República Dominicana: Una asociación entre el gobierno y la sociedad civil  

Microsoft Academic Search

El presente trabajo describe el Modelo Juan XXIII: modelo establecido en un área urbana, con una historia de fuerte movilización comunitaria, una presencia institucional favorecedora del liderazgo comunitario y la participación, y un gobierno experimentando una estrategia de descentralización de la salud pública. Indaga si este programa ha producido los resultados tangibles para los 70,000 habitantes de las 24 barrios

Uli Locher

2002-01-01

237

Una nota sobre la sostenibilidad fiscal y el nexo entre los ingresos y gastos del Gobierno Colombiano  

Microsoft Academic Search

En este trabajo se analiza empíricamente la sostenibilidad fiscal en Colombia a través de las técnicas de cointegración. En particular, usando los ingresos tributarios y los gastos primarios del gobierno nacional central para el período 1990Q1 a 2008Q4 (datos reales y ajustados por el ciclo económico), en el documento se examina si las cuentas fiscales del gobierno han sido sostenibles

Ignacio Lozano; Enrique Cabrera

2009-01-01

238

Étude et catégorisation de pratiques effectives entre professeurs et auxiliaires de vie scolaire (AVS) à l’école primaire  

Microsoft Academic Search

The law “for equal rights and opportunity, the participation and the citizenship of disabled persons”, dated February the eleventh, imposes to register all the students in their school district and to make it easy for disabled people to be schooled within the mainstream education system, as often as possible. School-life assistant or auxiliaire de vie scolaire (AVS) appear to aid

Marie Toullec-Théry; Isabelle Nédélec-Trohel

2008-01-01

239

Conhecimento sobre o molusco gigante africano Achatina fulica entre estudantes de uma escola pública na Região Metropolitana do Recife  

Microsoft Academic Search

Students' knowledge on the African giant mollusk Achatina fulica in a public school in the Recife metropolitan region. The African giant mollusk Achatina fulica Bowdich, 1822 was introduced into Brazil in 1988 as a substitute for the European escargot Helix sp. This action did not induce the expected results and the gastropod has become an invasive species according to records

Renata Manzi de Souza; Ângelo Giuseppe; Chaves Alves; Marcos Souto Alves

240

Tabaco, álcool e outras drogas entre adolescentes em Pelotas, Rio Grande do Sul, Brasil: uma perspectiva de gênero  

Microsoft Academic Search

This study assesses the relationship between gender and use of psychoactive substances (al- cohol, nicotine, and illicit drugs) by teenagers. In 2002, a cross-sectional study was carried out in the urban area of Pelotas, southern Brazil. Multi-stage sampling was used to obtain a sam- ple of adolescents, 15 to 18 years of age. Subjects were interviewed using a self-applied confiden-

Rogério Lessa Horta; Bernardo Lessa Horta; Ricardo Tavares Pinheiro; Blanca Morales; Marlene Neves Strey

2007-01-01

241

RELACION ENTRE LAS CARACTERISTICAS DEL PAISAJE URBANO Y LA COMUNIDAD DE AVES INTRODUCIDAS EN LA CIUDAD DE VALENCIA (ESPAÑA)  

Microsoft Academic Search

SUMMARY.—Relationships between the characteristics of the urban landscape and the introduced bird community in the city of Valencia (Spain). Aims: We describe the community of introduced birds in the city of Valencia and the relationships between this community and the characteristics of the urban landscape at two spatial scales. Location: The study was carried out in the urban and rural

Enrique MURGUI; Anna VALENTÍN

2003-01-01

242

Avaliação das Habilidades Motoras Fundamentais de Crianças com Idades entre Nove e Doze Anos Praticantes de Futebol  

Microsoft Academic Search

The mature stage of the fundamental motor skills is indispensable to the learning of the specific sporting movement; therefore we present the relevance of the development of these skills in order to facilitate the learning process of the soccer fundamentals. The aim of this study was to verify the stages in which the fundamental motor skills were in fifteen male

AUGUSTO MOURA DE OLIVEIRA; JOAQUIM MARTINS JUNIOR

243

Aplicação de geotecnologias em correlações entre solos, geomofologia, geologia e vegetação nativa no Distrito Federal, DF1  

Microsoft Academic Search

An increase on population growth showed at Distrito Federal (DF) has promoted indiscriminated uses and occupations of their lands. To evaluate actual environmental situation, it's necessary to update and to detail disponible natural resources maps, mainly soils. Then, the objective for this work was to study the correlations within soils, geomorphology, geology and native vegetation and to detail disponible soil

Marilusa Pinto Coelho Lacerda; Inara Oliveira Barbosa; Paulo Roberto Meneses; José Wilson Correia Rosa; Henrique Laccer Roig

244

ESTABELECENDO PONTES ENTRE O OCIDENTE E O ORIENTE: UM CONTRIBUTO DA PERSPECTIVA BUDISTA NA EDUCAÇÃO PARA A SUSTENTABILIDADE  

Microsoft Academic Search

Dialogue among cultures is a main characteristic on the knowledge construction in the 21st century societies. In this document, following a tradition started around thirty years ago, we try a conversation between western science and eastern Mahayana Buddhist school. The goal of this conversation is to find what contribute this philosophical tradition may give to the development of sustained societies

Orlando Figueiredo; Escola Secundária de Peniche

2006-01-01

245

Entre le zero et l'infini...l'environnement (Between Zero and the Infinite...the Environment).  

ERIC Educational Resources Information Center

Envisages the environment as that which surrounds, conditions, opposes, and allows one to understand, identify, and attain a series of objectives. The relationship of this understanding of environment to second language learning is explored, with particular emphasis on recent methodologies that see language as a culture's mode of expression. (AMH)

Cortes, Jacques

1982-01-01

246

Gel conducteur pour la simulation électrique des tissus humains entre 50 Hz et 500 kHz  

Microsoft Academic Search

Different kind of phantoms have been proposed as physical and experimental ways for the simulation of systems using electromagnetic fields. This article presents a gelatine phantom for electromagnetic modelisation of human tissues in order to characterise the electromagnetic low frequency interferences with pacemaker. Electrical properties of different samples of gelatine, with or without adding, have been characterised. The electrical conductivity

C Goeury; A Hedjiedj; M Nadi

2001-01-01

247

Relación entre las características sociodemográficas y la concentración de flúor en el agua con el grado de fluorosis dental  

Microsoft Academic Search

in the water consumed by the 5-11 year-old school population in the city of Manizales, Colombia. Materials and method: This descriptive study administered 143 surveys to the parents of the school children that presented dental fluorosis, with the aim to collect socio-demographic information. The fluorine concentration in drinking water was estimated by means of the analysis of water samples taken

Olga Patricia; López Soto; Ana María; Naranjo Mejía; Dora Cardona Rivas; Hernán Parra Sánchez; Diego Fernando Endo González; Mónica Toro Gámez; Andrea Arias Hoyos; Paula Tatiana; Cadavid Naranjo

2005-01-01

248

Estudi de la dependéncia energética de les diferéncies entre jets de quarks i gluons utilitzant el detector DELPHI de LEP  

NASA Astrophysics Data System (ADS)

Three jet events arising from decays of the Z^0 boson, collected by the DELPHI detector at LEP, were used to measure differences in the properties of quark and gluon jet fragmentation. Gluon jets were anti-tagged in bbar{b}g events, by identifiying b quark jets with high purities. Unbiased quark jets came from events qbar{q}? with two jets plus one photon. A comparison of quark and gluon jet properties in different energy ranges was performed for the first time and within the same detector. The average value of the ratio of the mean charged multiplicities of gluon and quark jets was measured to be [ 1.232 ± 0.026 ({esta.}) ± 0.018 ({sist.}) ] where the fraction of b-quark initiates jets was 11% and the Durham jet finding algorithm has been used for the selection of three jet events. In agreement with QCD an increase of this ratio with energy was observed at a 3sigma level. A further dependence of this ratio related with the angular acceptance of the algorithm used to reconstruct jets was also measured. Gluon jets have a broader energy and particle flow around its jet axis than quark jets of equivalent energy. The string effect has been observed in fully symmetric three-jet events. The ratio R_? of the charged particles flow in the qbar{q} inter-jet region of the qbar{q}g and qbar{q}? samples was measured in agreement with the perturbative QCD expectation [ frac{(N_{qq})_{qbar{q}g}}{(N_{qq})_{qbar{q}?}} = 0.058 ± 0.06 ({stat.+sist.}) ] The dependence of the mean charged multiplicity on the hadronic center-of-mass energy was analysed in photon plus n-jet events. A value for

Garcia, S. Marti i.

1995-11-01

249

Optimisation de l'émission du continuum femtoseconde de lumière blanche entre 600 nm et 800 nm  

NASA Astrophysics Data System (ADS)

Un dispositif de spectroscopie avec résolution du temps de vol des photons en milieu diffus a été développé. Celui-ci repose sur l'utilisation d'un continuum de lumière blanche généré par focalisation d'un laser amplifié (830 nm, 1 kHz, 0.5 W, 170 fs) dans de l'eau déminéralisée. Afin d'optimiser spectralement et en puissance la source blanche sur la fenêtre spectrale 600 800 nm, une étude de la mise en forme spatio-temporelle avant autofocalisation de l'impulsion laser par le milieu a été menée. Cette mise en forme est effectuée de manière spatiale en changeant la focale de la lentille de focalisation et de manière temporelle en changeant le taux de compression de l'impulsion. L'étude montre que le cône de lumière émise possède plus de puissance dans la fenêtre spectrale d'intérêt pour des focales longues. Sur la fenêtre 600-800 nm, le rendement énergétique intégré varie de 5%, avec une focalef=6cm, à 15%, avec une focale f = 30 cm. La mise en forme temporelle montre des effets similaires avec les mêmes ordres de grandeur.

Ramstein, S.; Mottin, S.

2005-06-01

250

Relación entre lípidos séricos y estado de las vitaminas C y E como antioxidantes en adultos mayores venezolanos  

Microsoft Academic Search

RESUMEN. En el envejecimiento se observa tendencia a hiperlipidemias, cambios en la distribución de lipoproteínas y una declinación del sistema de defensa antioxidante del organismo. El objetivo de este estudio fue relacionar concentraciones séricas de colesterol total, fracciones, triglicéridos y Vitaminas C y E. Se evaluaron 61 adultos mayores de 60 años de edad, de enero-marzo, 2006. Se diagnosticó estado

Lesbia Meertens; Gloria Naddaf; Adelmo Rodríguez

2008-01-01

251

Observation du Couplage Entre les Diffusions Raman et Brillouin Stimulees (Observation of Coupling between Stimulated Raman and Brillouin Diffusion).  

National Technical Information Service (NTIS)

The Stokes and anti-Stokes components of stimulated Raman diffusion are investigated. The frequencies of these components are symmetric to the fundamental frequency of the laser, and their frequency fluctuations are a function of the density and electroni...

C. Labaune H. A. Baldis S. D. Baton T. Jalinaud D. Pesme

1991-01-01

252

Comparaison entre calculs de vuln\\\\'erabilit\\\\'e sismique et propri\\\\'et\\\\'es dynamiques mesur\\\\'ees  

Microsoft Academic Search

Large-scale seismic vulnerability assessment methods use simplified formulas and curves, often without providing uncertainties. They are seldom compared to experimental data. Therefore, we recorded ambient vibrations and estimated modal parameters (resonance frequencies, modal shapes and damping) of 60 buildings in Grenoble (France) of various types (masonry and reinforced concrete). The knowledge of resonance frequencies in the linear domain is essential

Clotaire Michel; Philippe Guéguen; Pierre-Yves Bard

2007-01-01

253

Mortalidade materna: um estudo dos níveis e das causas de óbitos no México e no Brasil entre 2000 e 2004  

Microsoft Academic Search

A mortalidade materna se apresenta como um grave problema social e de saúde pública, representando um importante indicador para avaliar as condições de assistência à saúde feminina. A preocupação com as mortes maternas está relacionada principalmente às repercussões sociais e econômicas que a morte de uma mulher acarreta para as famílias. Isto porque as mulheres assumem atribuições centrais na organização

Ana Paula Belon

254

Corrélation entre la résistance au poinconnement sur ballast et les caractéristiques mécaniques des membranes d'étanchéité  

Microsoft Academic Search

Résumé  Le succès du Colloque de Liège organisé en juin 1977 avec le concours de la RILEM, a réuni plus de 300 participants st a montré\\u000a l'intérêt suscité par l'utilisation des membranes en matières plastiques et caoutchoucs dans la recherche des solutions d'étanchéité\\u000a des grandes surfaces.\\u000a \\u000a Pour opérer le choix objectif d'une membrane afin de solutionner un problème posé, il convient

J. M. Rigo; K. Gamski

1978-01-01

255

Impact des conditions de transmission sur la qualité des échanges d'information entre véhicules en environnement urbain réel  

Microsoft Academic Search

RÉSUMÉ. Dans la plupart des simulations de réseaux ad'hoc, la couche physique est considérée de façon très simple. En outre, le routage de l'information est effectué en cherchant à minimiser uniquement le nombre de sauts ou le temps de transfert de l'information. Dans cet article, les auteurs présentent deux contributions. L'une consiste à considérer un modèle de propagation 3D prenant

Rodolphe VAUZELLE; Wassim HAMIDOUCHE; Anne Marie; Yannis POUSSET

2009-01-01

256

Changements organisationnels et évolution du vécu au travail : une comparaison entre secteur privé et fonction publique d'Etat  

Microsoft Academic Search

Au moyen du dispositif d'enquêtes couplées COI, nous avons analysé les effets des changements organisationnels dans le secteur privé et la fonction publique d'Etat, sur des indicateurs d'intensification du travail, d'évolution des compétences et de variation de l'implication des salariés. Les changements organisationnels sont plus intenses dans la fonction publique d'Etat que dans le secteur privé, confirmant l'importance des modifications

Maëlezig Bigi; Nathalie Greenan; Sylvie Hamon-Cholet; Joseph Lanfranchi

2012-01-01

257

Nuevos datos para un viejo debate: Los vínculos entre ferrocarriles e industrialización en Chile y México (1860-1950)  

Microsoft Academic Search

Since the 19th century, the specialization in and export of basic products in Latin America has not been incompatible with the creation of manufacturing industry; moreover, the path towards industrialization depended on the kind of infrastructure demanded by primary goods-exporting activity. In such an effort, the railroad was crucial,not only as a means of transporting basic products, but also as

Guillermo Guajardo

1998-01-01

258

Perfi l dos casos de meningite internados no Hospital Materno Infantil de Marília, São Paulo, entre 2000 e 2005  

Microsoft Academic Search

Objective: To analyze the epidemiologic profi le of me- ningitis in children admitted to the Maternal and Child Hospital of Marília, São Paulo, Brazil, after the introduction of Haemophilus infl uenzae type b vaccine. Methods: This analytical, descriptive and retrospective study enrolled patients from one month to 15 years old, admitted to the hospital with meningitis between Janu- ary\\/2000 to

Fausto Flor Carvalho; André Carvalho Kreuz; Danilo Gomes de Carvalho; Marcelo José Pádua

259

Diferencias entre el control clínico y ambulatorio de la hipertensión arterial en pacientes muy ancianos. Proyecto CARDIORISC–MAPAPRES  

Microsoft Academic Search

Background and objectiveHypertension is highly prevalent in the very elderly. We studied control rates of hypertension according to clinic blood pressure (BP) and ambulatory BP monitoring (ABPM) in treated hypertensives aged ?80 years.

José L. Llisterri; Francisco J. Alonso; Manuel Gorostidi; Cristina Sierra; Alejandro de La Sierra; José R. Banegas; Julián Segura; Javier Sobrino; Juan J. De La Cruz; Felipe Madruga; Pedro Aranda; Josep Redon; Luis M. Ruilope

2009-01-01

260

Comportement des consommateurs dans l'espace metropolitain: arbitrage entre centre-ville et en peripheries commerciales  

Microsoft Academic Search

L'objet de cette communication est d'analyser les comportements des consommateurs en matiere d'achat de biens et services au sein des metropoles urbaines. Les comportements de consommation conduisent a des deplacements qui peuvent etre analyses sous l'angle de l'utilisation de l'espace urbain, des distances parcourues et des preferences individuelles. Comment les consommateurs combinent-ils leurs deplacements journaliers, l'information dont ils disposent et

P.-Y. Leo; J. Philippe

2000-01-01

261

La ecología espacial como punto de encuentro entre la ecología animal y vegetal. Modelos espacialmente explícitos de dispersión endozoócora  

Microsoft Academic Search

Spatial ecology as a crossroad for animal and plant ecology. An example using spatially explicit models of endozoochorou s seed dispersal. In this article, we use seed-dispersal systems to exemplify the importance of spatial ecology for the study of plant -animal interactions. The study of seed-dispersal systems has been traditionally biased towards their plant component, with a relative disregard for

L. Santamaría; A. R. Larrinaga; A. Arceiz; J. Rodríguez Pérez

262

LA COMBINACIÓN DEL USO LIBRE DE ASOCIACIONES Y LA ESTRATEGIA 'KEYWORDS' EN EL APRENDIZAJE DE VOCABULARIO DE INGLÉS COMO LENGUA EXTRANJERA  

Microsoft Academic Search

This research project studies the effectiveness of a programme of applica- tion of vocabulary learning strategies of English as a foreign language in Secon- dary Education. The combination of Association\\/Elaboration and Keywords is examined when it is used by an experimental group (N=23) against a control group (N=18) with strategic freedom. The programme is beneficial for the low performance group

MIGUEL GARCÍA LÓPEZ

2005-01-01

263

Developing Leaders Through Future-Aimed Curriculum: An Instructional Future-Aimed Curriculum Model, USOE Programs for Education of the Gifted and Talented.  

ERIC Educational Resources Information Center

The document is designed to provide the teacher of the gifted and talented child with an overview and operational procedure to facilitate the use of future-aimed learning activities for developing leadership capabilities in students. Initial sections cover elements of the future-aimed curriculum mode, definitions of terms, and descriptions of…

Yakima School District Number 7, WA.

264

O uso de imagens CBERS no monitoramento da cobertura vegetal da bacia hidrográfica do rio São Francisco - estudo de caso: Oeste Baiano  

Microsoft Academic Search

Due to the socioeconomic, political and environmental importance of the São Francisco river basin, the three government levels (federal, state and municipal), together with the society, have joined strengths to create instruments to improve the revitalization and sustainable development of the region. In this way, the objective of the present article is to present some components of the \\

Silvia Nascimento Viana

265

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

266

Considerazioni sull'uso dei metodi di brain imaging e di strategie sottrattive per lo studio della cognizione e delle sue basi neurali  

Microsoft Academic Search

Metodi non invasivi per la visualizzazione dell'attività cerebrale (brain imaging) sono impiegati da ormai due decenni per lo studio della cognizione e delle sue basi neurali. Il loro impianto metodologico - basato su strategie sottrattive importate da studi comportamentali - si fonda su una serie complessa di assunzioni spesso non tematizzate nella letteratura. Nel loro insieme, queste assunzioni disegnano un

DARIO TARABORELLI

2003-01-01

267

p115 is a General Vesicular Transport Factor Related to the Yeast Endoplasmic Reticulum to Golgi Transport Factor Uso1p  

Microsoft Academic Search

A recently discovered vesicular transport factor, termed p115, is required along with N-ethylmaleimide-sensitive fusion protein (NSF) and soluble NSF attachment proteins for in vitro Golgi transport. p115 is a peripheral membrane protein found predominantly on the Golgi. Biochemical and electron microscopic analyses indicate that p115 is an elongated homodimer with two globular \\

Stephanie K. Sapperstein; David M. Walter; Alexandra R. Grosvenor; John E. Heuser; M. Gerard Waters

1995-01-01

268

Medidas Comparativas de Capacitancia Em Celulas Solares de USO Espacial E Terrestre (Comparative Measurement of Capacitance in Solar Cells for Space and Terrestrial Applications).  

National Technical Information Service (NTIS)

An electric circuit capable of measuring the capacitance of PN junctions under reverse bias was mounted. This circuit was used for characterizing monocrystalline silicon solar cells for terrestrial and space applications. The thermic cycle and radiation d...

P. Nubile

1984-01-01

269

Avaliação de pirogênios em produtos de uso veterinário pelos testes da hipertermia em coelhos e do lisado de amebócitos do Limulus  

Microsoft Academic Search

The rabbit pyrogen test was used to evaluate veterinary products, suggesting the temperature rise of 0.6ºC as the ending point for the positive results. The test doses were calculated based on the therapeutic dose increased from three to seven times. The semi-quantitative Limulus amoebocyte lysate (LAL) gel clot test was performed and compared to the LAL spectrophotometric chromogenic, quantitative assay.

Thiago BarthI; Volmir João; Felipe Bianchini; Sérgio Luiz DalmoraI

270

Pesticide Safety for Non-Certified Mixers, Loaders and Applicators = Uso Seguro de Pesticidas para Mezcladores, Cargadores y Aplicadores no Certificados.  

ERIC Educational Resources Information Center

Written in English and Spanish and completely illustrated, this manual provides basic safety information for pesticide workers. Mixers, loaders, and applicators work with pesticides at their greatest strength and have the highest risk of poisoning. Understanding the pesticide label is the first step to pesticide safety. The words…

Poli, Bonnie; Fluker, Sam S.

271

Pesticide Safety for Non-Certified Mixers, Loaders and Applicators (Uso Seguro de Pesticidas para Mezcladores, Cargadores y Aplicadores no Certificados).  

National Technical Information Service (NTIS)

The manual was developed as a supplemental guide to the non-certified mixers, loaders and applicators pesticide safety training slide-tape program. The easy-to-read booklet provided basic pesticide safety information for workers including pesticide label ...

B. Poli S. S. Fluker

1986-01-01

272

Use of Simulation Techniques in the Problem of Air Traffic Control l'USO Delle Tecniche di Simulazione Nel Problema Del Controllo Del Traffico Aereo.  

National Technical Information Service (NTIS)

The air-traffic control involves a series of necessarily interconnected problems, whose solution needs a charged system to work out the information and to plan the decisions with coordination. The use of simulation techniques with which the system is divi...

C. Bottiglieri A. Dicola

1976-01-01

273

La Valutazione dell'uso e della Sicurezza dei Farmaci: Esperienze in Italia (National Workshop. Drug Use and Safety: Italian Experiences).  

National Technical Information Service (NTIS)

The aim of the Workshop is to present and discuss some of the main issues relevant to drug use and adverse drug use and adverse drug reaction in Italy. The Workshop focuses on the following areas. The first session is about the evaluation and promotion of...

M. Bolli

2001-01-01

274

El uso de las simulaciones educativas en la ensenanza de conceptos de ciencias y su importancia desde la perspectiva de los estudiantes candidatos a maestros  

NASA Astrophysics Data System (ADS)

This research was aimed at establishing the differences, if any, between traditional direct teaching and constructive teaching through the use of computer simulations and their effect on pre-service teachers. It's also intended to gain feedback on the users of these simulations as providers of constructive teaching and learning experiences. The experimental framework used a quantitative method with a descriptive focus. The research was guided by two hypothesis and five inquiries. The data was obtained from a group composed of twenty-nine students from a private Metropolitan University in Puerto Rico and elementary school pre-service teachers. They were divided into two sub-groups: experimental and control. Two means were used to collect data: tests and surveys. Quantitative data was analyzed through test "t" for paired samples and the non-parametric Wilcoxon test. The results of the pre and post tests do not provide enough evidence to conclude that using the simulations as learning tools was more effective than traditional teaching. However, the quantitative results obtained were not enough to reject or dismiss the hypothesis Ho1. On the other hand, an overall positive attitude towards these simulations was obtained from the surveys. The importance of including hands-on activities in daily lesson planning was proven and well recognized among practice teachers. After participating and working with these simulations, the practice teachers expressed being convinced that they would definitely use them as teaching tools in the classroom. Due to these results, hypothesis Ho2 was rejected. Evidence also proved that practice teachers need further professional development to improve their skills in the application of these simulations in the classroom environment. The majority of these practice teachers showed concern about not being instructed on important aspects of the use of simulation as part of their college education curriculum towards becoming teachers.

Crespo Ramos, Edwin O.

275

EL USO DE ATLAS.TI Y LA CREATIVIDAD DEL INVESTIGADOR EN EL ANÁLISIS CUALITATIVO DE CONTENIDO UPEL. INSTITUTO PEDAGÓGICO RURAL EL MÁCARO  

Microsoft Academic Search

The purpose of the report consists on offering a group of methodological recommendations that you\\/they facilitate the process of qualitative analysis of the information. After having gathered the information, by means of interviews, observations, printed documents and audiovisual recordings, among other, the qualitative investigator assumes the responsibility of interpreting what is observed, he listens or he reads. Nevertheless, in spite

Carmen Varguillas

2006-01-01

276

USO DE ANÁLISE ESTATÍSTICA MULTIVARIADA PARA TIPIFICAÇÃO DE PRODUTORES DE LEITE DE MINAS GERAIS Use of multivaried statistical analysis for Minas Geraismilk productors characterization  

Microsoft Academic Search

The present work had as its main objective to identify and characterize milk production systems through methods of multivaried statistical analysis. Factorial analysis, cluster, discriminant and canonical correlation were utilized. The production gradation and defrayal were the main classification criterium among the productors. Combining the results obtained with the cluster analysis and the canonical correlation analysis, the second classification analysis

Armando Chinelatto Neto; Gilmar Pinheiro Cunha Castro; João Eustáquio de Lima

277

CLASSIFICAÇÃO DA COBERTURA VEGETAL E CAPACIDADE DE USO DA TERRA NA REGIÃO DO CARIRI VELHO (PARAÍBA), ATRAVÉS DE SENSORIAMENTO REMOTO E GEOPROCESSAMENTO  

Microsoft Academic Search

The main objective of this study is the better use of our natural resources for a part of Cariri Velho region of Paraíb a State (NE of Brazil). Under this investigation, the supervised classification (MAXCLAS) was made using the SPOT images by ERDAS Software and thirteen land use\\/land cover classes were detected, which further were evaluated by various GIS programs

HARENDRA S. TEOTIA; IVANDRO DE FRANÇA DA SILVA; ROBERTO DOS SANTOS; JOSÉ FRANCIMAR VELOSO JUNIOR; JORGE LUÍS DE GÓIS GONÇALVES; Pesquisas Espaciais; Caixa Postal

2003-01-01

278

Estudo da Evolucao Urbana de Brasilia Atraves do Uso de Dados Landsat (Study of the Urban Evolution of Brasilia with the Use of Landsat Data).  

National Technical Information Service (NTIS)

The urban growth of Brasilia within the last ten years is analyzed with special emphasis on the utilization of remote sensing orbital data and automatic image processing. The urban spatial structure and the monitoring of its temporal changes were focused ...

M. D. L. N. Deoliveira C. Foresti M. Niero E. M. D. M. Parreiras

1984-01-01

279

Uso de los Datos de Biomonitoreo para Informar sobre la Evaluacion Infantil (American translation is: USING BIOMONITORING DATA TO INFORM EXPOSURE ASSESSMENT IN CHILDREN)  

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....

280

Uso de biomateriales en medicina regenerativa, aspectos básicos y aplicaciones en el Sistema Nervioso Use of biomaterials in regenerative medicine, basic aspects and applications in the Nervous System  

Microsoft Academic Search

Objective: To analyze some of the physical-chemical and structural most important aspect in the design of bio- materials for tissue repair with an approach to its possible usefulness in the nervous system. Design: We analyzed several studies regarding the synthesis and design of biomaterials for tissue reconstruc- tion by using porous scaffolds, nanostructured systems, and combination of biomaterials and stem

Soria J M; Barcia-González J; Andrades J A; Romero J; Monleón Pradas M

281

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

282

Avaliação do impacto ambiental do uso e ocupação da terra na sub-bacia hidrográfica do Rio Vacacaí-Mirim\\/RS-Brasil  

Microsoft Academic Search

The study aimed to evaluate the impacts of landuse in the watershed Vacacaí-Mirim River, located in the central region of Rio Grande do Sul (Brazil) for the lifting of the use and coverage of the earth were used topographic charts of Camobi and Santa Maria, on the scale of 1:50,000, and images CCD\\/CBERS 2 were used (October 2006) 3B4R2G composition.

Aline Batista Ferreira

283

Uso de metilprednisolona versus diclofenaco en el control de la inflamación y el trismo tras la cirugía del tercer molar inferior  

Microsoft Academic Search

Objective: To compare the efficacy of methylprednisolone (corticoid)versus diclofenac (nonsteroidal anti-inflammatory -NSAID-) in the treatment of inflammation and trismus after the surgical removal of lower third molars. Study design: Prospective study on 73 patients for the surgical removal of their lower third molars. These patients were separated in two groups at ramdom: the diclofenac group and the methylprednisolone group. A

Cirugía Bucal; Carmen López Carriches; José M; Martínez González; Manuel Donado Rodríguez

284

Charge It Right. FDIC Money Smart Financial Education Curriculum = Uso Correcto de su Tarjeta de Credito. FDIC Money Smart Plan de Education para Capacitacion en Finanzas.  

ERIC Educational Resources Information Center

This module on managing a credit card is one of ten in the Money Smart curriculum, and includes an instructor guide and a take-home guide. It was developed to help adults outside the financial mainstream enhance their money skills and create positive banking relationships. It is designed to enable participants to describe the costs and benefits of…

Federal Deposit Insurance Corp., Washington, DC.

285

USO DA CULTURA DE CÉLULAS EM TESTES DIAGNÓSTICOS LABORATORIAIS EM MEDICINA E BIOLOGIA The use of cell culture in laboratory diagnostic tests in medicine and biology  

Microsoft Academic Search

RESUMO A cultura de células, iniciada nos primórdios do século XIX, vem sendo cada vez mais adaptada à manutenção do metabolismo fundamental celular in vitro, permitindo o desenvolvimento da maioria das funções fisiológicas básicas inerentes a uma célula e ao conjunto delas (tecido). A permanência da informação genética trazida do organismo que lhe deu origem, faz com que as células

Iracina Maura de Jesus; Maria Izabel de Jesus; Walber Victor de Moraes Pinto; Renato Lopes Fernandes Medeiros; Dorotéa de Fátima; Lobato da Silva

286

Conhecimento da equipe de enfermagem acerca do uso de luvas no contexto hospitalar Nursing team knowledge in the use of latex gloves in the hospital context Conocimiento del equipo de enfermería en el uso de guantes de látex en el contexto hospitalario  

Microsoft Academic Search

The use of gloves is unquestionable in the health care, although there is no consensus among professionals about the choice of sterilized or procedure gloves. The objective of this research was to evaluate the knowledge of nursing professionals regarding to the use of gloves considering different activities. This is a cross-sectional study, with exploratory and descriptive features, carried out in

Myrna Ribeiro

287

VIVÊNCIA DOS TRABALHADORES DE ENFERMAGEM FRENTE AO USO DOS ANTIRETROVIRAIS APÓS EXPOSIÇÃO OCUPACIONAL A MATERIAL BIOLÓGICO 1 LIVING EXPERIENCE OF NURSING WORKERS FACED WITH THE USE OF ANTIRETROVIRALS AFTER OCCUPATIONAL EXPOSURE TO BIOLOGICAL MATERIAL LA VIVENCIA DE LOS TRABAJADORES DE LA ENFERMERÍA ANTE EL USO DE LOS ANTIRETROVIRAIS DESPUES DE LA EXPOSICIÓN OCUPACIONAL AL MATERIAL BIOLÓGICO  

Microsoft Academic Search

This study is based on the Health Belief Model, using a quanti-qualitative approach by means of percentage calculations as quantitative data, while presenting qualitative data through content analysis. This study aims to analyze significant beliefs among nursing workers who were victims of occupational accidents while exposed to biological material, either adhering to chemoprophylactic treatment or not with antiretroviral medication. This

Giselle Clemente Sailer; Maria Helena P. Marziale

2007-01-01

288

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

289

Una Mirada al Futuro: Doctrina, Estrategia, Nuevas Amenazas y el Rol del Poder Aéreo  

Microsoft Academic Search

Hemos delineado unas ideas que esperamos puedan servir para contribuir en la elaboración de la concepción Estratégica Aeroespacial y Nacional. La ocurrencia de conflictos de nuevas características que se suman a los tradicionales, hacen aún más compleja, la ya dinámica temática de la Defensa Aeroespacial Nacional. Nuestro trabajo no agota el tema ni la totalidad de las ideas relacionadas, pero

Horacio Matias Orefice

290

“Esto no es un castigo de Dios”. Gestión local del agua en Guatemala: el caso de los municipios de Chiantla y Huehuetenango  

Microsoft Academic Search

En Guatemala coexisten muchos y variados sistemas de gestión del agua basados en tradiciones comunitarias, los cuales han nacido mayoritariamente debido a la ausencia de servicios públicos estatales. Sin embargo, una gran proporción de la población aún tiene problemas de acceso al agua, y los conflictos sociales son frecuentes. El objetivo de este artículo es la caracterización de los sistemas

Gonzalo Gamboa; Rocío García; Juan Mendoza; Fernando Recancoj; Juan Diego González; Geisselle Sánchez

2007-01-01

291

Movimientos anti-mineros: el caso de Pascua-Lama en Chile  

Microsoft Academic Search

En los últimos años, el aumento de proyectos de minería aurífera en América Latina ha dado lugar a toda una serie de protestas comunitarias englobadas en la consigna del “NO a la minería de oro”. El conflicto de Pascua-Lama, en el chileno Valle del Huasco, fue estudiado durante cuatro meses de trabajo de campo dentro de la metodología de Investigación-Acción.

Leire Urkidi Azkarraga

2008-01-01

292

BUDDA (Bulge/Disk Decomposition Analysis) - um novo programa para análise estrutural de galáxias  

NASA Astrophysics Data System (ADS)

Tem sido prática comum nos últimos anos estudar a distribuição de luminosidade em galáxias fazendo uso da informação contida em toda a imagem da galáxia, já que esta técnica tem se mostrado muito mais confiável do que o simples ajuste de perfis radiais de luminosidade. Através destes estudos bidimensionais, melhores resultados tem sido obtidos na análise e.g. do Plano Fundamental, de correlações entre os parâmetros estruturais de galáxias, de sub-estruturas como barras e anéis nucleares etc. Apresentamos um novo código bidimensional, o BUDDA, de análise estrutural de galáxias, que será disponibilizado para a comunidade. Desenvolvido por nós, o código determina os parâmetros estruturais de galáxias de forma prática e robusta, e pode ser aplicado genericamente em qualquer estudo sobre a formação, evolução e estrutura de galáxias. O programa ainda permite a avaliação direta de sub-estruturas, através de imagens residuais que são obtidas ao se subtrair, das imagens originais, bojo e disco sintéticos que melhor representam essas componentes da galáxia sob consideração. Será apresentada a forma de utilização do código, bem como séries de testes que atestam a sua funcionalidade. Além disso, os resultados da aplicação do código em uma amostra de 51 galáxias serão expostos como exemplo prático, e do seu enorme potencial de uso.

Gadotti, D. A.; de Souza, R. E.; Dos Anjos, S.

2003-08-01

293

Detección automática de NEOs en imágenes CCD utilizando la transformada de Hough  

NASA Astrophysics Data System (ADS)

El interés y la dedicación por los objetos que se acercan a la órbita de la Tierra (NEOs) ha aumentado considerablemente en los últimos años, tanto que se han iniciado varias campañas de búsqueda sistemática para aumentar la población identificada de éstos. El uso de placas fotográficas e identificación visual está siendo sustituído, progresivamente, por el uso de cámaras CCD y paquetes de detección automática de los objetos en las imágenes digitales. Una parte muy importante para la implementación exitosa de un programa automatizado de detección de este tipo es el desarrollo de algoritmos capaces de identificar objetos de baja relación señal-ruido y con requerimientos computacionales no elevados. En el presente trabajo proponemos la utilización de la transformada de Hough (utilizada en algunas áreas de visión artificial) para detectar automáticamente trazas, aproximadamente rectilíneas y de baja relación señal-ruido, en imágenes CCD. Desarrollamos una primera implementación de un algoritmo basado en ésta y lo probamos con una serie de imágenes reales conteniendo trazas con picos de señales de entre ~1 ? y ~3 ? por encima del nivel del ruido de fondo. El algoritmo detecta, sin inconvenientes, la mayoría de los casos y en tiempos razonablemente adecuados.

Ruétalo, M.; Tancredi, G.

294

La salud en personas con discapacidad intelectual en Espa?a: estudio europeo POMONA-II  

PubMed Central

Introducción Estudios internacionales demuestran que existe un patrón diferenciado de salud y una disparidad en la atención sanitaria entre personas con discapacidad intelectual (DI) y población general. Objetivo Obtener datos sobre el estado de salud de las personas con DI y compararlos con datos de población general. Pacientes y métodos Se utilizó el conjunto de indicadores de salud P15 en una muestra de 111 sujetos con DI. Los datos de salud encontrados se compararon según el tipo de residencia de los sujetos y se utilizó la Encuesta Nacional de Salud 2006 para comparar estos datos con los de la población general. Resultados La muestra con DI presentó 25 veces más casos de epilepsia y el doble de obesidad. Un 20% presentó dolor bucal, y existió una alta presencia de problemas sensoriales, de movilidad y psicosis. Sin embargo, encontramos una baja presencia de patologías como la diabetes, la hipertensión, la osteoartritis y la osteoporosis. También presentaron una menor participación en programas de prevención y promoción de la salud, un mayor número de ingresos hospitalarios y un uso menor de los servicios de urgencia. Conclusiones El patrón de salud de las personas con DI difiere del de la población general, y éstas realizan un uso distinto de los servicios sanitarios. Es importante el desarrollo de programas de promoción de salud y de formación profesional específicamente diseñados para la atención de personas con DI, así como la implementación de encuestas de salud que incluyan datos sobre esta población.

Martinez-Leal, Rafael; Salvador-Carulla, Luis; Gutierrez-Colosia, Mencia Ruiz; Nadal, Margarida; Novell-Alsina, Ramon; Martorell, Almudena; Gonzalez-Gordon, Rodrigo G.; Merida-Gutierrez, M. Reyes; Angel, Silvia; Milagrosa-Tejonero, Luisa; Rodriguez, Alicia; Garcia-Gutierrez, Juan C.; Perez-Vicente, Amado; Garcia-Ibanez, Jose; Aguilera-Ines, Francisco

2011-01-01

295

A ARBITRAGEM COMO FORMA DE RESOLUÇÃO DE CONFLITOS ENTRE OS USUÁRIOS DO SECOND LIFE. ARBITRATION AS A MEANS OF RESOLVING CONFLICTS BETWEEN USERS OF SECOND L IFE  

Microsoft Academic Search

This article intends to register an analysis of the virtual environm ent of Second Life, for the forms of conflict resolution. But the idea is to start a discussion in the face of virtual environments that are emerging about virtual well, applicability of law in the face of questions concerning the network. Despite no longer mention the proportionality of the

Karla Cristina da Costa; Silva Matos Ferragi

296

Análise da expansão de área agrícola do Município de Lucas do Rio Verde - GO entre os anos de 1986 e 2007  

Microsoft Academic Search

Conversions of natural landscapes to croplands can be evaluated by remote sensing techniques, more specifically by change detection methods and by multitemporal data. These are essential sources of inf ormation to understand land use and land cover dynamics. Th is work has arisen from needing to compare differen ces in land cover using two Landsat \\/TM datasets throughout the time

Silvia Cristina de Jesus

297

Associação entre aves e flores de duas espécies de árvores do gênero Erythrina (Fabaceae) na Mata Atlântica do sudeste do Brasil  

Microsoft Academic Search

Association between birds and flowers of two species of trees of the genus Erythrina (Fabaceae) in the Atlantic forest of southeastern Brazil. Flowers are considered important resources in the diet of birds during the dry season. We studied the interaction between birds and two species of the trees of genus Erythrina (E. falcata and E. verna) at four localities in

Ricardo Parrini; Marcos A. Raposo

2008-01-01

298

Se identifica una relación entre la falta de exámenes de detección y una gran parte de los casos de cáncer de seno en la etapa avanzada  

Cancer.gov

Los autores de un estudio publicado el 20 de octubre de 2004 en la revista Journal of the National Cancer Institute1? declaran que las dos prioridades principales del sistema de salud deben ser aumentar el porcentaje de exámenes de mamografía e invertir en investigaciones que mejoren la tecnología para detectar el cáncer de seno.

299

Un tournant dans l'histoire technique de la sidérurgie : la création de l'Irsid. Compétition et collaboration entre l'Etat et l'industrie  

Microsoft Academic Search

[eng] Abstract There were no profesionnal center of technological researches in the French steel industry before World War two. This central laboratory («l'Irsid : Institut de la recherche sidérurgique») was imagined by Jean Rist in 1943 and created by Henri Malcor in 1946. This is a business initiative. Mining enginers from National School of Mining, those specializing in high grade

Philippe Mioche

1989-01-01

300

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

301

Avaliando a habitação: relações entre qualidade, projeto e avaliação pós-ocupação em apartamentos1 Assessing housing quality: relationships between apartment quality, design, and post-occupancy evaluation  

Microsoft Academic Search

This article discusses a methodology for post-occupancy evaluation (POE) of apartment buildings for the middle class built in Ribeirão Preto, SP, after 2000, aiming at contributing for the establishment of effective feedback tools for this kind of projects. The goal of this POE application was to evaluate the quality of internal and collective spaces of those apartment buildings in an

Simone Barbosa Villa

302

Thriving Together: Connecting Rural School Improvement and Community Development = Prosperando juntos: La conexion entre el mejoramiento de la escuela rural y el desarrollo comunitario.  

ERIC Educational Resources Information Center

Available in English or Spanish, this resource guide aims to help rural schools and communities learn ways of supporting each other so that both can thrive. Background information and basic tools are provided for starting a joint school-community development effort. Chapters contain: (1) outline of the guide and statement of beliefs about…

Boethel, Martha

303

Nouvelles découvertes de vertébrés dévoniens en Amérique du Sud et leurs implications dans le contact entre le Gondwana et l'Euramérique.  

NASA Astrophysics Data System (ADS)

A new fossil fish fauna from western Venezuela provides the first South American Devonian record of antiarch and phyllolepid placoderms, and sarcopterygians including lungfishes, groups widely distributed on other continents. Endemic elements in the fish fauna indicate Gondwana affinities, and the age of the phyllolepid placoderm occurrence is consistent with a model of biotic dispersal between Gondwana and Euramerica near the Frasnian-Famennian boundary. A narrow marine barrier separating northern and southern landmasses is indicated, in contrast to the wide equatorial ocean for the Late Devonian postulated from palaeomagnetic data.

Young, Gavin C.; Moody, John M.; Casas, Jhonny E.

2000-12-01

304

Les relations universite-entreprise entre l'etat et le besoin (University-Business Relationships between the State and the Need).  

ERIC Educational Resources Information Center

A discussion of the role of government in supporting the relationship between business and higher education focuses on academic research and the economic and industrial value placed on it. The actual support provided by the private sector, roles of the three players, and major issues in the debate are examined. (MSE)

Leclerc, Michel

1991-01-01

305

ESTUDIO COMPARATIVO DEL BAJO PESO AL NACER, DEPRESION AL 1er MINUTO Y TERMINACION CESAREA ENTRE MADRES ADOLESCENTES Y LA POBLACION GENERAL  

Microsoft Academic Search

SUMMARY: Objective: to evaluate the characteristics of new born, Caesarean completion, establishing differences between adolescent mothers (10 to 19 years) and nonadolescent mothers (greater of 19 years). Methodology: retrospective design, comparative. Were reviewed the collected data of the Computer science System Perinatal of Hospital \\

Silvina Analía; Soledad Lezcano; Maria Selva Vallejos Arce; Hipólito Sodero

306

Relación entre saberes y prácticas culinarios con la conservación de la agrodiversidad. Estudio etnobotánico en el Parque Pereyra Iraola (Buenos Aires, Argentina)  

Microsoft Academic Search

The Park Pereyra Iraola, 10,200 hectares located in Buenos Aires Conurbano (peripheral localities to the city of Buenos Aires, capital of Argentina), constitutes the greater green lung of the area more densely populated in the country. At the moment, among the diverse ventures settled in the Park, 1200 of the hectares are devoted to approximately 100 gardens or \\

Elida Turco; Lucía Souilla; Ministerio de Asuntos

307

Le travail des hommes de la paix : le cas des relations entre Louis XIV et Leopold Ier de 1668 à 1673  

Microsoft Academic Search

[eng] Résumé The study of how the relations between France and the Emperor operated between 1668 and 1673 gives an example of the work put in by the personnel of faithful and clients who attended on the secretary of State for foreign affairs, Hugues de Lionne. The problems were how to pass on news and how to adapt oneself to

Philippe Romain

1986-01-01

308

Correlación entre la estructura de bandas y las propiedades físicas de óxidos cerámicos de estructura perovskita con metales de transición (I): Propiedades de conducción electrónica  

Microsoft Academic Search

En este artículo se revisa los principales modelos teóricos, que pretenden dar una explicación sobre las propiedades de con- ducción electrónica de óxidos cerámicos con estructura perovskita, que incluyen en la posición B metales de transición del primer período (Fe, Co, Ni, Mn), en conexión con su estructura de bandas y el carácter de sus electrones más externos, así como

L. SÁNCHEZ; J. R. JURADO

309

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

310

ANÁLISIS DE CONTENIDO DE LAS PUBLICACIONES ESPAÑOLAS SOBRE RELACIONES VERTICALES ENTRE EMPRESAS \\/ CONTENT ANALYSIS OF SPANISH PUBLICATIONS ON VERTICAL RELATIONSHIPS AMONG ENTERPRISES  

Microsoft Academic Search

En los últimos años los investigadores han mostrado un creciente interés en las relaciones interorganizativas verticales, principalmente en la Cadena de Suministro. La ausencia de trabajos previos de revisión bibliográfica sobre este tema, que permitan plantear las cuestiones clave a estudiar en Gestión de la Cadena de Suministro, nos ha llevado a realizar un análisis de contenido de la investigación

M. T. Martínez Fernández; T Vallet Bellmunt; R. Barreda Tarrazona

2010-01-01

311

Relación entre el virus del papiloma humano y la amplificación del gen de la ciclina D1 en los carcinomas epidermoides de cabeza y cuello  

Microsoft Academic Search

Introduction: infection by oncogenic subtypes of human papillomavirus (HPV) and cyclin D1 gene (CCND1) amplification are frequent events in head and neck squa- mous cell carcinomas. The objective of this paper is to esta- blish the relationship between the presence of human papi- llomavirus (HPV) gene sequences and the development of CCND1 gene amplification in these tumours. Materials and methods:

J. P. Rodrigo Tapia; L. A. García González; I. Alvarez Alvarez; R. Cabanillas Farpón; C. Suárez Nieto; INVESTIGACIÓN CLÍNICA

2005-01-01

312

DIFERENCIAS EN LAS ESTADÍSTICAS DE JUEGO ENTRE BASES, ALEROS Y PÍVOTS EN BALONCESTO FEMENINO Differences between women's basketball guards, forwards and centres through game-related statistics  

Microsoft Academic Search

The aim of the present study was to analyze the differences in game-related statistics between basketball guards, forwards and centres from the WNBA League (professional league in fe- male basketball in USA, organized by the Women National Bas- ketball Association). The sample was gathered from the WNBA boxscores from the 2005 season (n= 215 games), selecting an amount of 75

Miguel Ángel Gómez Ruano; Alberto Lorenzo Calvo; Enrique Ortega Toro; Jaime Sampaio; Sergio-José Ibáñez Godoy

2007-01-01

313

RELACIÓN ENTRE ESTRATEGIAS DE CONTROL EN EL AMBIENTE FAMILIAR Y ESCOLAR Y PRÁCTICAS DE JUEGO EN NIÑOS, NIÑAS Y JÓVENES1  

Microsoft Academic Search

This article presents the analysis of relations between juvenile game practices and control strategies in family and school, as part of a larger study on game practices in the youth of Bogotá. Interviews of 155 participants between 10 to 17 years of age and their parents were analysed. Participants were classified in two groups according to their level of game

CLAUDIA CAYCEDO; ROCÍO GARCÍA; BLANCA PATRICIA BALLESTEROS; MÓNICA MARÍA NOVOA

314

Suivis temporels comparés de la structure thermique d'eaux côtières libanaises (Batroun) et françaises (Marseille) entre juin 1999 et octobre 2002  

NASA Astrophysics Data System (ADS)

Vertical temperature profiles were recorded from June 1999 to October 2002 (at least once a month) at two Mediterranean sites, in the eastern basin (Batroun, Lebanon; 0-100 m) and in the northwestern basin (Marseilles, France; 0-55 m). At the two sites, the thermal seasonal evolution and the thermocline time dynamics are quite identical. But in the Lebanese waters, at comparable water depths, temperatures are currently 4 to 5 °C higher than in the French waters, the thermocline is longer (more than 6 months), permanent and deeper (40-50 m) than in Marseilles (20-30 m). The latter frequently disappears in summer due to northwest winds inducing cold waters. This is principally due to differences in prevailing wind regimes at each site. Such evaluation, coupled with long-term observations of temporal evolution of coastal water at the regional level of the Mediterranean basins, will shed light on temperature regime fluctuations and their consequences in the context of global warming of the Mediterranean. To cite this article: M. Abboud-Abi Saab et al., C. R. Geoscience 336 (2004).

Abboud-Abi Saab, Marie; Romano, Jean-Claude; Bensoussan, Nathaniel; Fakhri, Milad

2004-11-01

315

RELAÇÕES ENTRE A CONCENTRAÇÃO DE ÍONS E A SALINIDADE DE ÁGUAS SUBTERRÂNEAS E SUPERFICIAIS, VISANDO À IRRIGAÇÃO, NO SERTÃO DE PERNAMBUCO  

Microsoft Academic Search

The objective of the study was to determine the relationship between the electrical conductivity of subsurface and surface water (ECw in dS\\/m at 25°C) and the ion concentration of Na +, Ca2+ + Mg2+ and C1- (in mmolc L -1 ). The study was based on 75 and 100 samples collected from subsurface and surface waters, respectively, in 33 counties

José Nunes Filho; Antonio Raimundo de Sous; Vital Artur de Lima; Berthyer Peixoto Lima

316

Le transfert de connaissances entre les mathematiques et les sciences. Une etude exploratoire aupres d'eleves de 4e secondaire  

Microsoft Academic Search

Au moment ou dans plusieurs pays on travaille a refondre les programmes d'etudes, tant au primaire qu'au secondaire, l'interet pour le transfert renait. Un des concepts fondamentaux en apprentissage consiste en l'habilete a reutiliser de facon consciente et efficace un acquis d'une situation a une autre situation. Cette recherche emane de preoccupations professionnelles au moment ou le chercheur etait enseignant

Ghislain Samson

2003-01-01

317

Difusión de nuevas tecnologías y estimación de la demanda de nuevos productos: un análisis comparativo entre Argentina y EE.UU  

Microsoft Academic Search

RESUMEN Este trabajo analiza, utilizando el modelo de Bass, la demanda de telefonía celular, acceso a Internet, y acceso a Internet por banda ancha en Argentina y en EE.UU. a fines de determinar los patrones de difusión de nuevas tecnologías. Los resultados indican que en EE.UU. la velocidad de difusión es mayor que en Argentina, y prevalece -a diferencia de

Viviana Weissmann

318

Auto-inflammation de substances explosives. Comparaison entre calcul analytique et numérique en vue d'une optimisation dans le domaine de la pyrotechnie  

Microsoft Academic Search

Self-ignition of energetic material was investigated in order to optimize safety in the field of pyrotechnic applications. Two approaches were used; the first one is relative to Frank-Kamenetskii stationary thermal explosion theory. The second approach consists of a choice of some numerical solutions of heat conduction equations in a non-stationary state. Comparison between these results was carried out in order

Philippe Gillard

1998-01-01

319

Interaction entre les défauts ponctuels créés, les parois de Bloch et les dislocations dans le nickel irradié aux électrons à basse température  

Microsoft Academic Search

INTERACTION BETWEEN POINT DEFECTS, BLOCH WALLS AND DISLOCATIONS, IN LOW-TEMPERATURE ELECTRON-IRRADIATED NICKELAfter irradiating a nickel sample at 29 K with 2 MeV electrons followed by an isochronal thermal treatment, one obtained :(a) a bulk elastic effect depending on the global concentration of point defects.(b) a reorientation effect of these defects and their interaction with Bloch walls.(c) a pinning of the

Par J. C. Soulie; C. Minier; J. Lauzier

1973-01-01

320

Correlations Entre Niveau de Conscience, E.E.G. Et Potentiels Evoques Chez l'Homme (Level of Consciousness, EEG and Evoked Potentials in Man).  

National Technical Information Service (NTIS)

A comparative study was made of the visual evoked response in some neurological conditions having in common a decrease of the level of consciousness with delta activity in the EEG, but differing in their origin (deep sleep, barbiturate narcosis, post-elec...

F. Corletto A. Gentilomo G. Rosadini G. F. Rossi J. Zattoni

1966-01-01

321

Entre didactique et pedagogie: Epistemologie de l'espace/temps strategique (Between Instruction and Pedagogie: The Epistemology of Strategic Time/Space).  

ERIC Educational Resources Information Center

Analyzes the components of teaching, envisioning a strategic moment when instruction and pedagogy merge. Examines the way in which transformations of knowledge could be represented according to recent trends in artificial intelligence. (DMM)

Tochon, Francois, V.

1991-01-01

322

Denomination et categorisation des modeles d'enseignement des langues: entre institution et pratique (Denomination and Categorization of Language Teaching Models: Between Institution and Practice).  

ERIC Educational Resources Information Center

The process and issues of labeling language program models is discussed insofar as it may affect the objectives, content, and method of instruction. The first section describes the origins, stated objectives, and implementation of a Neuchatel (Switzerland) school program integrating heritage language and culture into the school curriculum, noting…

Gajo, Laurent; Matthey, Marinette

1998-01-01

323

La microangiopathie du diabète. étude des relations entre les données de la biopsie cutanée, l'âge du malade, le type et la durée du diabète  

Microsoft Academic Search

Riassunto Il presente lavoro concerne lo studio dei rapporti tra la microangiopatia, valutata in base ai dati semi-quantitativi della biopsia cutanea (percentuale di capillari sanguigni che presentano un anello PAS-positivo periferico omogeneo), il tipo e la durata del diabete e l'età dei malati. Tale studio riguarda una casistica di 188 diabetici (54 con diabete chimico, 100 con diabete non insulinodipendente

Jean-Dominique Romani

1972-01-01

324

Relations structurales entre U 3O 8 et quelques fluorures mixtes de formules M2M' 3F 11, MM' 2F 7 et MM' 3F 10  

NASA Astrophysics Data System (ADS)

U 3O 8 oxide, as well as M2M' 3F 11, MM' 2F 7 and MM' 3F 10 fluorides, with M = Rb, Tl, Cs, NH 4 and M' = In, Lu, Yb, Tm, is described as the regular repetition according to the … A-A-A … sequence of identical and parallel sheets of edge-and corner-sharing M'F 7 or UO 7 pentagonal bipyramids and M'F 6 octahedra. M' and U atoms are systematically located at the lattice points of a pseudohexagonal network, but in the fluorides some of these lattice points are vacant, producing hexagonal tunnels in which M atoms are located. It is shown that in the two kinds of compounds the same linear chains and M' 3X17 groups of pentagonal bipyramids are present, and that the transformation of the U 3O 8 structure into the fluorides can be achieved by an ordered substitution of some linear … U?O?U?O … chains by … M- M- M … chains. All these structures can be described with the same structural model based on the chemical twinning principle.

Aléonard, S.; Le Fur, Y.; Champarnaud-Mesjard, J. C.; Frit, B.; Roux, M. Th.

1983-01-01

325

La Linguistica Aplicada a la Relacion Paradigmatica entre los Verbos "Ser" y "Estar" (Linguistics Applied to the Paradigmatic Relationship between the Verbs "Ser" and "Estar")  

ERIC Educational Resources Information Center

Speakers of Italian often have problems mastering Spanish because they erroneously believe its great similiarity to Italian makes it easy to learn. One of the fundamental problems is the lack of ability to choose the correct verb, "ser" or "estar," both equivalents of the Italian "essere." (Text is in Spanish.) (CFM)

Marchetti, Magda Ruggeri

1977-01-01

326

COMPARACIÓN ENTRE INTROVERTIDOS Y EXTROVERTIDOS EN EL NIVEL DE ANSIEDAD AL ESCUCHAR MÚSICA RELAJANTE A comparison of anxiety levels between introvert and extrovert subjects while listening relaxing music  

Microsoft Academic Search

This paper compares the level of anxiety between extrovert and introvert in- dividuals while listening relaxing music. A sample of 184 subjects (92 extra- vert and 92 introvert) was used in order to measure their level of anxiety by using the Inventory of State-Trait Anxiety. Results show that the introvert subjects reduced significantly their anxiety than extrovert ones while listening

Roberto Valderrama Hernández; Alejandro Campos Azuara; Julieta Vera Ramírez; Gladys Patricia; Castelán Rojas

2009-01-01

327

Entre dicho y hecho …: An Assessment of the Application of Research from Second Language Acquisition and Related Fields to the Creation of Spanish CALL Materials for Lexical Acquisition  

Microsoft Academic Search

Despite the problems presented by lexical errors in second language (L2) com- munication, most computer assisted language learning (CALL) programs tend to focus on the acquisition of grammar points rather than on the development of the L2 lexicon. In addition, CALL vocabulary tasks are typically limited in scope and mechanical in nature, covering mostly basic lexical meanings and ignor- ing

Barbara A. Lafford; Peter A. Lafford; Julie Sykes

328

Psychological Correlates of the Transmission and Acceptance of Rumors about AIDS = Correlates Psychologiques Entre la Transmission et l'Acceptation des Rumeurs sur le SIDA.  

ERIC Educational Resources Information Center

Public reactions to the Acquired Immune Deficiency Syndrome (AIDS) crisis are accompanied by the sorts of emotional and cognitive factors that have been identified by researchers as predictors of rumor generation and transmission. The present investigation attempted to ascertain the extent that various subjective factors (including anxiety,…

Kimmel, Allan J.

329

RGENDF: programa interface entre o codigo NJOY e codigos que utilizam secoes de choque multigrupo. (RGENDF: interface program between NJOY code and codes which use multigroup cross sections).  

National Technical Information Service (NTIS)

An interface program, for reformatting multigroup cross section libraries generated by NJOY into ENDF/B-V format and Expanda, PFCOND and Compar input formats, is presented. (author). (Atomindex citation 22:069921)

E. S. Chalhoub J. Anaf

1987-01-01

330

Estudio comparativo entre dos fuentes alimentarias aportadoras de ácidos grasos poliinsaturados n-3 y su efecto sobre el timo y el perfil lipídico de ratas  

Microsoft Academic Search

SUMMARY. Comparative study between two different sources of n-3 poliunsaturated fatty acids and it effect on thymus and lipid profile in rats. In the present paper we analyzed the effect caused by different recovery diets enriched with n-3 polyunsaturated fatty acids (PUFA n-3) on thymus and serum lipid pattern. Severe depleted weanling Wistar rats (D) were divided in three groups

Inés Fernandez; Anabel N. Pallaro; Nora H. Slobodianik

2007-01-01

331

DYNAMICS OF SOMATIC CELL-LINEAGE COMPETITION IN CHIMERAS OF Hydractinia symbiolongicarpus (CNIDARIA: HYDROZOA) Dinámica de competencia entre líneas celulares somáticas en quimeras de Hydractinia symbiolongicarpus (Cnidaria: Hydrozoa)  

Microsoft Academic Search

Sessile colonial invertebrates often fuse with conspecifics to form chimeras. Chimerism represents an unequivocal instance of within-individual selection where genetically different cell-lineages compete for representation in the somatic and gametic pools. We analyzed temporal and spatial variations in somatic cell-lineage composition of laboratory-established chimeras of the hydroid Hydractinia symbiolongicarpus (Cnidaria: Hydrozoa). Using three clones with different allotypic specificities (i.e., two

RYAN S. SCHWARZ; LUIS F. CADAVID

332

COMPETIÇÃO ENTRE ESPÉCIES FLORESTAIS NATIVAS EM IRATI - PR, CINCO ANOS APÓS O PLANTIO (Competition of native forest tree species in Irati — PR, five years after planting)  

Microsoft Academic Search

The objective of this study was to collect information in the behaviour and silvicultural characteristics for eight forest tree species nativa to the Irati region in the State of Paraná, Brazil, five years after planting, when planted in pure stands in clear- cut areas. The studyied species are \\

Paulo Ernani; Ramalho Carvalho

333

Agricultural influence on the hydrogeochemistry of the sub-basins of the Verde, Entre Ribeiros and Escuro Rivers of Paracatu Hydrographic Basin (MG) – Brazil  

Microsoft Academic Search

Purpose – Of the numerous hydrogeochemical river-water transformations provoked by intense and irrational soil practices, heavy metal contamination by agrochemical usage is the most worrisome. Long-term metal accumulation can be transported by rainwater, during storms, contaminating rivers. Data on this type of contamination are still scarce, principally in developing countries, such as Brazil. This paper aims to evaluate the influence

Maria Augusta Gonçalves Fujaco; Mariangela Garcia Praça Leite

2010-01-01

334

RELACIÓN ENTRE VIGOR INICIAL, RENDIMIENTO Y SUS COMPONENTES EN POBLACIONES DE MAÍZ CHALQUEÑO * RELATIONSHIP BETWEEN INITIAL VIGOR, YIELD AND ITS COMPONENTS IN CHALQUEÑO MAIZE POPULATIONS  

Microsoft Academic Search

Initial vigor and its relationship with grain yield and its components were evaluated in 28 maize (Zea mays L.) populations of the Chalqueño race. Fourteen were collected from the Purepecha Mountain Range, in the state of Michoacan, nine from the Chalco Valley, in the State of Mexico, and fi ve from other states. Vigor was measured through the accelerated aging

Felipe de Jesús; Leobigildo Córdova Téllez; Amalio Santacruz Varela; Fernando Castillo González; Elizabeth Cárdenas Soriano; Adriana Delgado Alvarado

2007-01-01

335

Entre dois mundos: vida quotidiana de criancas portuguesas na america [Between Two Worlds: The Daily Life of Portuguese Children in America].  

ERIC Educational Resources Information Center

This Portuguese reader with accompanying teacher's guide describes the culture shock that Portuguese children and their families face when they immigrate to North America. The reader is divided into 75 short stories about the families that come from the rural areas of Portugal where there has been little industrialization. The purpose of the…

de Meneses, Fernando

336

ASOCIACIÓN ENTRE PUDRICIÓN TEXANA (Phymatotrichopsis omnivora) E INSECTOS BARRENADORES DEL NOGAL (Carya illinoensis)* ASSOCIATION BETWEEN COTTON ROOT ROT (Phymatotrichopsis omnivore) AND BORER INSECT OF PECAN TREE (Carya illinoensis)  

Microsoft Academic Search

Euplatypus segnis (Chapuis) (Coleoptera: Platypodidae) causes severe damage to pecan (Carya illinoensis) trees at Coahuila, Mexico. The present study was carried out during 1999-2001 in a 90 ha pecan orchard, divided in eight lots, during 1999-2001. The trees were counted and clasified in four categories: attacked by borer insects and with symptoms of cotton root rot (Phymatotrichopsis omnivora); only attacked

José Alfredo Samaniego-Gaxiola; Manuel Ramírez-Delgado; Aurelio Pedroza-Sandoval; Urbano Nava-Camberos

337

Comparaison entre les différentes commandes d'un moteur asynchrone pour un véhicule électrique en vue de minimiser les pertes de l'onduleur  

NASA Astrophysics Data System (ADS)

The losses of an inverter supplying an induction motor are compared for different vector control and pulse width modulation strategies. The study is carried out in simulation. As a conclusion, an optimal control in terms of losses is determined. Les pertes par conduction et par commutation d'un onduleur alimentant un moteur asynchrone sont comparées pour différentes solutions de contrôle vectoriel et de modulation de largeur d'impulsions. L'étude est réalisée en simulation. En conclusion, une commande optimale au niveau des pertes est déterminée.

Papazian, J.-C.; Rognon, J.-P.; Roye, D.; Delbosc, Ph.

1998-04-01

338

L'oxychromate Tl{_3(CrO_4)Sr_8Cu_4O_{16}} : phénomènes d'ordre entre le thallium et le chrome  

Microsoft Academic Search

Long range ordering between chromium and thallium has been evidenced for the first time in copper oxychromate Tl_3(CrO_4)Sr_8Cu_4O_{16} using HREM, XRD and ND. This compound, which crystallizes in an orthorhombic cell with a= 3.7803(1) Å Å Å Å Å Å, b=15.2573(2) Å Å Å Å Å Å and c=17.6737(3) Å Å Å Å Å Å derives from the \\

F. Letouzé; C. Martin; C. Michel; M. Hervieu; A. Maignan; R. Seshadri; B. Raveau

1998-01-01

339

Étude optoélectronique du mouvement de pédalage chez des cyclistes lors d'un exercice à 250 Watts. Comparaison entre une selle standard et une selle ergonomique  

Microsoft Academic Search

Purpose – The aim of this experiment was to evaluate and to compare the motor behaviour of cyclists who rode a bicycle equipped with a standard saddle and an ergonomic saddle that has no perineum support.Methods – Six trained cyclists (Mean ± SD: age, 37 ± 9 yr.; body mass, 74 ± 1 kg; height, 178 ± 5 cm) rode a bicycle equipped with a

O Edeline; E Dréano; I Bertoldi; J Weber

2001-01-01

340

Estudio comparativo de los hábitos de higiene oral entre alumnos de 1º, 3º y 5º de odontología de la Universidad Internacional de Cataluña  

Microsoft Academic Search

Summary Objectives: The aim of this paper is to analyze the oral hygienic habits in a student population of the International University of Catalunya (UIC) and to evaluate their periodontal health care. Material and Methods: In a total population of 217 students of 1st (34.1%), 3rd (39.6%9 and 5th (26.35%) a dental ques- tionnaire on oral hygiene and smoking habits

O. Freixa; O. Luis; D. Violant; A. Santos

341

¿SUPERPOSICION DE SÍNTOMAS O ERROR DIAGNOSTICO? Relación entre Síndrome de Intestino Irritable (SII) y enfermedad celíaca (EC) a propósito de un caso  

Microsoft Academic Search

This is a review on a relationship between Irritable Bowel Syndrome (IBS) and Celiac Disease (CD), that is bases in a patient with chronicle diarrhea. She was diagnosed as with IBS during many years. The association in this case with weigth loss, anemia and ulcerative stomatitis makes us think about other entities like CD . She is a 46 years

Diego Alonso; Eduardo Marini; Blas Gonzalez

342

L'accident du Toulourenc : une limite tectonique entre la plate-forme provençale et le Bassin vocontien à l'Aptien–Albien (SE France)  

Microsoft Academic Search

The WNW–ESE trending Toulourenc Fault Zone (TFZ) is the western segment of the major Ventoux–Lure Fault Zone, which separates the Provençal platform from the Baronnies Vocontian Basin. The TFZ was subject to polyphased Mid-Cretaceous movements, during the Early Aptian and Middle–Late Albian times. The latter faulting episode generated conglomerates and olistoliths resulting from dismantled faultscarps cutting Barremian–Bedoulian limestones. The deformation

Christian Montenat; Marie-Christine Janin; Pascal Barrier

2004-01-01

343

Cancer du col utérin stades IB et II opérable : comparaison rétrospective entre curiethérapie utérovaginale préopératoire et chirurgie première suivies d’une radiothérapie  

Microsoft Academic Search

Purpose. – To identify prognostic factors and treatment toxicity in a series of operable stages IB and II cervical carcinomas.Patients and methods. – Between May 1972 and January 1994, 414 patients (pts) with cervical carcinoma staged according to the 1995 FIGO staging system underwent radical hysterectomy with (n=380) or without (n=34) bilateral pelvic lymph node dissection. Lateral ovarian transposition to

D. Atlan; E. Touboul; E. Deniaud-Alexandre; J. P. Lefranc; V. Ganansia; A. Bernard; J. M. Antoine; D. Jannet; P. E. Lhuillier; M. Uzan; C. Genestie; M. Antoine; M. Jamali; J. Milliez; S. Uzan; J. Blondon

2002-01-01

344

Comparaison entre les Procedes Sol-Gel de la Zircone et de l'Alumine (Comparison of Sol-Gel Procedures for Zircon and Alumina).  

National Technical Information Service (NTIS)

Zirconium and aluminum oxide sol-gel procedures are reviewed. Published results are presented, including both the physical and chemical aspects of the procedures. The differences in zircon and alumina behavior are explained. It is concluded that for both,...

A. C. Pierre

1988-01-01

345

Étude de la Solution Solide Entre Tungstate et Tellurate de Magnésium: Pb 2MgW xTe (1- x) O 6  

NASA Astrophysics Data System (ADS)

The solid solutions Pb 2MgW xTe (1- x) O 6was prepared and investigated by dielectric measurements, DSC, X-ray, and neutron powder diffraction. A phase diagram is proposed. Above 312 K the structure is cubic (space group Fmoverline3m) for all xvalues (0? x?1). Around 190 K and for x?0.4, the incommensurate phase transition of Pb 2MgTeO 6is observed. It is little affected in this range by the W rate.The compositions x?0.8 undergo the orthorhombic/commensurate phase transition of Pb 2MgWO 6. This transition is very sensitive to the amount of Te present. The transition temperature and the orthorhombic distortion decrease quickly with increasing Te content. For 0.6< x<0.8 the transition is partial. In the range 0.4< x<0.6 the situation is more complex, both commensurate and incommensurate phases being observed at low temperature. The structure corresponding to x=0.4 has been determined by neutron powder diffraction at 12 K. It is isostructural to the incommensurate phase of Pb 2MgTeO 6. The orthorhombic/commensurate structures (space group Pmcn) of x=0.5, 0.7, and 0.9 were determined by X-ray powder diffraction at 80 K. The atomic displacements from the cubic positions decrease with increasing Te content.

Rivezzi, N.; Sciau, Ph

1998-09-01

346

Termoluminescencia do LiF: Mg, Ti entre 77 e 315 K. (Thermoluminescence of LiF: Mg, Ti between 77 and 315 K).  

National Technical Information Service (NTIS)

A special thermoluminescent system was developed. It is able to operate right from liquid nitrogen temperature and also permits the determination of the sample thermoluminescent emission spectrum. Using this system, the thermoluminescence displayed by 77 ...

L. A. R. Rosa

1989-01-01

347

Estado nutricional de crianças índias do Alto Xingu em 1980 e 1992 e evolução pondero-estatural entre o primeiro e o quarto anos de vida  

Microsoft Academic Search

This study focused on the under-five population of the Alto Xingu region in Brazil, with the following objectives: (1) to evaluate height and weight increment from the first through the fourth years of life and (2) to compare nutritional status in 1980 and 1992. Height and weight increases were evaluated in 81 children. Weight and height were measured in 264

Mauro Batista de Morais; Ulysses Fagundes Neto; Ângela Peixoto de Mattos; Roberto Geraldo Baruzzi

2003-01-01

348

Fidélité à la marque, fidélité à l'enseigne: une analyse des déterminants des rapports de force entre producteurs et distributeurs  

Microsoft Academic Search

[eng] Within-brand and within-store competition: a determinant analysis of the balance of power between manufacturers and retailers - The growing importance of mass distribution has transformed the balance of power between manufacturers and retailers. Regarding the limited effectiveness of numerous laws (Royer, Raffarin, Galland), which were supposed to restrain the increasing power of retailers, an accurate analysis of the relationships

Stéphane Caprice

2004-01-01

349

La prédisposition a la recherche d'expériences comme caractéristique individuelle : un élément de la complémentarité entre théorie classique et approche expérientielle  

Microsoft Academic Search

Approches traditionnelle et expérientielle du comportement du consommateur sont présentées comme complémentaires. Cette recherche étudie une des manifestations de cette complémentarité en introduisant la prédisposition des individus à la recherche d'expériences dans le processus de décision traditionnel. Les résultats de l'analyse quantitative démontrent que la prédisposition à la recherche d'expériences renforce la place de l'attitude aux côtés de l'intention d'achat

Etienne Bressoud

2007-01-01

350

Sequence similarity between the cp gene and the transgene in transgenic papayas = Similaridade de seqüência entre o gene cp do vírus e do transgene presente em mamoeiros transgênicos  

Microsoft Academic Search

The Papaya ringspot virus (PRSV) coat protein transgene present in 'Rainbow' and 'SunUp' papayas disclose high sequence similarity (>89%) to the cp gene from PRSV BR and TH. Despite this, both isolates are able to break down the resistance in 'Rainbow', while only the latter is able to do so in 'SunUp'. The objective of this work was to evaluate

M. T. Souza; M. Teixeira; D. Gonsalves

2005-01-01

351

University Spin-Offs in Sweden: A Longitudinal Study  

ERIC Educational Resources Information Center

There have been few studies on the long-term performance of university spin-offs (USOs). This paper builds on previous empirical research into the performance of USOs and on the resource- based model of USOs. Several research issues are addressed including, in particular, the long-term performance of Swedish USOs, the distribution of the main…

Lowegren, Marie; Bengtsson, Lars

2010-01-01

352

Influencia atmosférica en la rotación terrestre  

NASA Astrophysics Data System (ADS)

Las observaciones de los parámetros de la orientación terrestre han alcanzado en estos últimos años una exactitud sin precedentes gracias al uso de modernas técnicas de geodesia espacial. Estudios previos han establecido que las variaciones en la rotación terrestre con períodos iguales o menores que dos años obedecen a cambios en la circulación atmosférica global. Para estos períodos puede comprobarse que existe un gran acuerdo entre las fluctuaciones de la longitud del día (LOD) y los cambios del momento angular atmosférico terrestre (AAM). Sin embargo, no existe un acuerdo general acerca de las causas que provocan las variaciones de largo período de la rotación de la Tierra, también conocidas como ``variaciones decenales''. En nuestro análisis examinamos las correlaciones entre las variaciones de los valores de LOD y las fluctuaciones en la componente polar del momento angular atmosférico terrestre. Con este propósito utilizamos los siguientes juegos de datos: las series de AAM, estimado siguiendo la definición de Barnes et al.(1983) para 2825 días provientes del National Meteorological Center (NMC) y del European Centre for Medium Range Weather Forecast (ECMWF); y las series de LOD que contienen valores alisados espaciados a intervalos de un día elaborados por el International Earth Rotation Service (IERS). Mostraremos que para los cambios anuales e interanuales en la rotación de la Tierra la influencia atmosférica es asombrosa, mientras que, tanto en las escalas temporales más grandes y como en las más pequeñas, ambas series, geodésica y atmosférica, parecen diverger aún cuando poseemos observaciones obtenidas con las técnicas más modernas al presente.

Fernández, L. I.; Arias, E. F.; Brunini, C. A.

353

Delimitação de Fitofisionomias em áreas do Parque Estadual Verde Grande e da Área de Proteção Ambiental do Lajedão (MG) e entorno, com o uso de imagens Ikonos de alta resolução e classificação orientada a objeto  

Microsoft Academic Search

The objective of this work was to apply object-based classification to map vegetation types in the Parque Estadual Verde Grande, APA Lajedão and surroundings. IKONOS-II images were input to segmentation algorithms with different scale parameters generating image objects of different sizes. In the first segmentation level, general vegetation classes were distinguished (forests and grass land). The second level within forest

Prado Costa; Luís Marcelo; Tavares de Carvalho; Luciano Teixeira de Oliveira; Gil Júlio de Souza Netto

354

Procedure di Mutuo Riconoscimento: Problematiche di Qualita dei Farmaci per Uso Umano Nei Dossier di Autorizzazione All'Immissione in Commercio (Mutual Recognition Procedures: Quality Problems in Dossiers for Marketing Authorization of Pharmaceutical Products for Human Use).  

National Technical Information Service (NTIS)

Quality of a medicinal product is an essential requirement for its safety and efficacy. This first report analyses the evaluation activity of the Istituto Superiore di Sanita (ISS, the National Institute of Health in Italy) on the Quality part of the doss...

I. Sestili M. Bartolomei M. C. Gaudiano

2006-01-01

355

Alternativas para el USO del Suelo en Areas Forestales del Tropico Humedo. Tomo 1-4 (Alternatives for using the Land in Forest Areas of the Humid Tropic. Volumes 1-4).  

National Technical Information Service (NTIS)

In this publication are presented some results of the research done by members of the 'Agreement on planning the exploitation and utilization of tropical forest areas', signed on August, 1978 by the governments of West Germany and Mexico. Vol. I includes ...

H. Janka H. Steinlin

1981-01-01

356

Mapeamento DA Vegetacao/USO DA Terra de Areas Indigenas Utilisando-Se Dados TM/LANDSAT (Mapping of Vegetation/Land Use of Indigenous Areas Utilizing TM/LANDSAT Data).  

National Technical Information Service (NTIS)

The objective of this work is to provide environmental information about indigenous areas (Ananas Ponta da Serra, Cajueiro, Ouro, Araca, Serra da Moca, Recanto da Saudade). The study area is located in Boa Vista, Bonfim, and Alto Alegre municipalities in ...

P. Hernandezfilho K. Defaria

1990-01-01

357

Protocolo piloto de separação e quantificação de células tronco de tecido adiposo de coelhos para posterior uso em laringe Pilot protocol for separation and quantification of stem cells from fat tissue of rabbits for posterior use in larynx  

Microsoft Academic Search

Introduction: After the demonstration that bone marrow cells were able to recruit a number of different lineages, including some cells responsible for the osteocartilogeneses, several culture and maintenance means were described. The great concern in relation to the success factors and failure of the culture procedures has relationship with the number of cells obtained in the collections and its differentiation

Isis Sousa Oliveira Pereira; Paulo Pontes; Lilian Piñero Eça; Alice Teixeira Ferreira; Paulo Marcelo; Vaccari Mazzetti; Leonardo Silva; Flávia Coelho de Souza; Cirurgião Plástico

2008-01-01

358

Geoprocessamento aplicado ao mapeamento dos impactos socioambientais decorrentes das formas de uso da terra nas Áreas de Preservação Permanente (APPs) da Represa de Salto Grande no município de Americana (SP)  

Microsoft Academic Search

The Dam of Salto Grande, occupying an area of 10.5 km2, is located in the hydrographical basin of the Atibaia River, important tributary of the Piracicaba River, in the State of São Paulo. It takes care of, in the present time, to the inhabitants of the cities of Americana, Paulínia and Nova Odessa, that also use the source for activities

Joyce Rodrigues da Cruz

359

Convegno Nazionale. Buon Uso del Sangue. Istituto Superiore di Sanita, Roma, 25-26 Febbraio 2003. (National Meeting on Appropriate Use of Blood. Istituto Superiore di Sanita. Rome, 25-26 February 2003.)  

National Technical Information Service (NTIS)

Transfusion still carries a risk of adverse reactions and transfusion-transmissible infections. The appropriate clinical use of blood and blood products means the transfusion of safe blood products only to treat a condition leading to significant morbidit...

A. Giampaolo A. Barca L. Catalano H. J. Hassan

2004-01-01

360

USO de Sensoriamento Remoto Aereo Para Um Estudo de Caso de Desertificacao: Quixaba-Pe (Use of Aerial Remote Sensing in a Case Study of Desertification: Quixaba-Pe).  

National Technical Information Service (NTIS)

The Brasilian semiarid northeast, pointed out as one of the problem regions of the land, is presented, as a consequence of its fragile environment and high risk of desertification. A case of vegetative development in one of the problem sectors, a region o...

V. C. Decarvalho

1986-01-01

361

EJEMPLOS APLICADOS DE LA TEORIA DE MODERNIZACION DE LAS MAQUINAS AGRICOLAS PARA AMPLIAR SUS FUNCIONES DE USO APPLIED EXAMPLES OF THE THEORY OF MODERNIZATION OF AGRICULTURAL MACHINES TO ENLARGE THEIR FUNCTIONS OF USE  

Microsoft Academic Search

From an economic point of view and in order to achieve a sustainable environment it is necessary to plan and to carry out recycling for a product through its different live stages. It is convenient to start since production is taking place, usage time and when it is being

Dietmar Rössel; Hipólito Ortiz Laurel; Marco A. Cortes Chamorro; Brydson Bonora

362

Eficiencia del uso del sulfato de amonio y urea en trigo (triticum aestivum) a traves del metodo del dilucion isotopica. (Ammonium sulphate and urea use efficiency in wheat (triticum aestivum) through isotope dilution method).  

National Technical Information Service (NTIS)

Two field experiments were carried out to evaluate the use efficiency of nitrogen fertilizer in wheat crop, using urea and ammonium sulphate 5% N-15 atom excess. The experiments were conducted at the ICTA Experimental Center 'Labor Ovalle', Quetzaltenango...

M. A. Alfaro J. L. Pappa F. Aldana

1993-01-01

363

Estudo da quebra de simetria conforme em teorias de campo em fundo gravitacional com uso de integrais de caminho. (Study of the conformal symmetry breaking in field theories in gravitational background using path integrals).  

National Technical Information Service (NTIS)

Some general aspects on field theories in curved space-time and a introduction to conformal symmetry are presented. The behavior of the physical systems under Weyl transformations is discussed. The quantization of such systems are performed through the fu...

M. Souza Alves

1990-01-01

364

THE ANALYTIC HIERARQUICAL PROCESS (AHP) AS A DECISION MAKING TOOL IN THE OPORTUNITY ANALYSIS OF CORPORATE REAL ESTATE INVESTMENT USO DA FERRAMENTA AHP (ANALYTIC HIERARQUICAL PROCESS) COMO APOIO À DECISÃO NA ANÁLISE DA OPORTUNIDADE DE IMOBILIZAÇÃO EM IMÓVEIS CORPORATIVOS  

Microsoft Academic Search

Due to the increasing of competitiveness in the different sectors of economy, corporations have been changing the way to lead their business in order to generate better performance and results. In this way, continuous reorganizations of the resources used in the operations have been done, and the real estate as well. The decisions about this resource have been better judged,

Carolina Andrea; Garisto Gregório; João da Rocha

365

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

366

Avaliação objetiva da síndrome dolorosa miofascial: uso da termografia antes e após tratamento associando mesoterapia a bloqueio anestésico Myofascial syndrome objective evaluation: thermography before and after treatment with mesotherapy and trigger-point injections  

Microsoft Academic Search

Myofascial pain syndrome is a very common diagnose in patients with segmental pain and complains are very unspecific; the use of Fischer's technique, with algometry and special palpation method helps identifying active trigger points (TP). Mesotherapy seems to have better and faster results if associated with Dr Fisher's technique of paraspinal block (PSB) and TP injections. It can be documented

Luciane Fachin Balbino; Luiz Rosa

367

Seguranca radiologica no uso de tecnicas nucleares -atividades desenvolvidas pelo Centro de Desenvolvimento da Tecnologia Nuclear - CNEN. (Radiological safety in the use of nuclear technique-activities developed by Centro de Desenvolvimento da Tecnologia Nuclear - CNEN).  

National Technical Information Service (NTIS)

The activities developed by the Centro de Desenvolvimento da Tecnologia Nuclear - CDTN supporting the users of nuclear techniques are described. The methodology used and future plans for the group are shown. (E.G.). (Atomindex citation 22:055424)

T. Wakabayashi E. G. Pereira T. Hirayama

1991-01-01

368

A Method for Segmenting Continuous Speech by Means of the 'Homotopics' of the Band Filtered Signal UN Metodo di Segmentazione Del Parlato Connesso Mediante l'USO di 'Omotopiche' Del Signale Filtrado a Bande.  

National Technical Information Service (NTIS)

Homotopic correlations are used to segment continuous speech because of its ability to follow fast signal variations and its property of assuming strongly different configurations. The experiment was carried on using a single italian language phrase, filt...

F. Bianchi P. Pocci L. Prina-ricotti

1980-01-01

369

pRS4: UN VECTOR DE CLONACIÓN IDÓNEO PARA BACTERIAS ÁCIDO-LÁCTICAS DE USO ALIMENTARIO pRS4: AN APPROPRIATE CLONING VECTOR FOR LACTIC-ACID BACTERIA OF FOOD USE  

Microsoft Academic Search

The ability of pRS4, a cryptic plasmid from Pediococcus pentosaceus, as a selective cloning vector for lactic acid bacteria has been analysed. The results indicate that pRS4C1, a cloning vector from pRS4 can stably transform Lactobacillus plantarum, Pediococcus acidilactici and P. pentosaceus (three lactic acid bacteria used as starters in the food industry) but it does not transform Enterococcus faecalis

J. M. Mesas; M. C. Rodríguez; M. T. Alegre

2006-01-01

370

USO DE UNA SOLUCIÓN ANTISÉPTICA SOLA O ASOCIADA CON UN PROGESTÁGENO EN EL TRATAMIENTO DE LA VACA REPETIDORA DE SERVICIO Treatment of Repeat Breeders Cows with Antiseptic Solutions Alone or Associated with Progestins  

Microsoft Academic Search

In Maracaibo lake basin, around 20% of crossbred dual pur- pose cows are considered repeat breeders, having long post- partum intervals and impeding the main farm objective of one calf per cow, per year. The aim of this study was to evaluate the effect of the use of an intrauterine infusion with Listerine ® alone or associated with progestins for

2005-01-01

371

Tecniche di calcolo di intensita' di dose da sorgenti di radiazione neutronica e fotonica con l'uso di codici basati su metodologie diverse. (Radiation doses from radiation sources of neutrons and photons by different computer calculation).  

National Technical Information Service (NTIS)

In the present paper the calculation technique aspects of dose rate from neutron and photon radiation sources are covered with reference both to the basic theoretical modeling of the MERCURE-4, XSDRNPM-S and MCNP-3A codes and from practical point of view ...

F. Siciliano G. Lippolis S. G. Bruno

1995-01-01

372

Validacion de una Version Espanola del Child Abuse Potential Inventory para Su Uso en Espana (Validation of a Spanish Version of the Child Abuse Potential Inventory in Use in Spain).  

ERIC Educational Resources Information Center

A Spanish translation of the Child Abuse Potential Inventory was administrated to 66 perpetrators of child maltreatment and physical abuse and a demographically representative sample (n=829) of the general population of the Pais Vasco in Spain. The measure correctly identified 98.3 percent of the physical child abuse perpetrators. (Author/DB)

De Paul, Joaquin; And Others

1991-01-01

373

XI Seminario nazionale. La valutazione dell'uso e della sicurezza dei farmaci: esperienze in Italia. Roma, 13 dicembre 2002. Riassunti (XI National Workshop. Drug Use and Safety: Italian Experiences. Rome, December 13, 2002. Abstract Book).  

National Technical Information Service (NTIS)

The Workshop is focused on deepening its traditional issues of Adverse Drug Reactions (ADR) and safety in drug use in Italy. The first session is centered on pharmacovigilance systems and ADR studies with special reference to monitoring networks: the nati...

P. Ruggeri B. Caffari M. Bolli

2002-01-01

374

Needed Research on Psychological Processes. A Special Report of the USOE-Sponsored Grant Study: Critical Appraisal of Research in the Personality-Emotions-Motivation Domain. IBR Report No. 73-31.  

ERIC Educational Resources Information Center

This task group report is one of a series prepared by eminent psychologists who have served as consultants in the U.S.O.E.-sponsored grant study to conduct a Critical Appraisal of the Personality-Emotions-Motivation Domain. In order to achieve the goal of identifying important problems and areas for new research and methodological issues related…

Fiske, Donald W.

375

Needed Research on Stress and Anxiety. A Special Report of the USOE-Sponsored Grant Study: Critical Appraisal of Research in the Personality-Emotions-Motivation Domain. IBR Report No. 72-10.  

ERIC Educational Resources Information Center

This series of papers on stress and anxiety is part of a larger project concerned with a critical appraisal of research needs in the areas of personality, emotion, and motivation. A group of behavioral scientists contributed their expertise in identifying critical variables, concepts, and processes relating to stress and anxiety. Rather than…

Spielberger, C.D.; And Others

376

Needed Research on PEM Aspects of Child Development. A Special Report of the USOE-Sponsored Grant Study: Critical Appraisal of Research in the Personality-Emotions-Motivation Domain. IBR Report No. 73-25.  

ERIC Educational Resources Information Center

The task group report presented in this publication is one of a series prepared by eminent psychologists who have served as consultants in the U.S.O.E.-sponsored grant study to conduct a Critical Appraisal of the Personality-Emotions-Motivation Domain. In order to achieve the goal of identifying important problems and areas for new research and…

Meyer, William J.; And Others

377

Needed Research on Trait Structure, Multivariate Approach. A Special Report of the USOE-Sponsored Grant Study: Critical Appraisal of Research in the Personality-Emotions-Motivation Domain. IBR Report No. 73-21.  

ERIC Educational Resources Information Center

The task group report presented in this publication is one of a series prepared by eminent psychologists who have served as consultants in the U.S.O.E.-sponsored grant study to conduct a Critical Appraisal of the Personality-Emotions-Motivation Domain. In order to achieve the goal of identifying important problems and areas for new research and…

Cartwright, Desmond S.; And Others

378

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

379

Estudo comparativo entre a artroplastia discal tipo metal-metal e a artrodese lombar na discopatia lombar degenerativa Comparative study of lumbar disc arthroplasty and lumbar arthrodesis in lumbar degenerative disc disease Estudio comparativo entre la artroplastia discal tipo metal-metal y la artrodesis lumbar en la discopatía lumbar degenerativa  

Microsoft Academic Search

Objective: to realize a retrospective, long-term study, with clinical com- parative analysis between the pre and post-operative conditions of the patients submitted to lumbar disc replacement using metal-metal type disc, and the group operated for the traditional arthrodesis technique, in a single level for degenerative disc disease. Methods: eighteen patients had been submitted to the disc replacement with metal-metal type

Fernando Dario; Lyra de Freitas Coutinho; Luiz Cláudio Schettino

2008-01-01

380

Financial Integration and Interest Rate Linkages in Industrial Countries, 1958-71 (Intégration financière et relations entre les taux d'intérêt des pays industriels, 1958-71) (Integración financiera y relaciones entre los tipos de interés en los países industriales, 1958-71)  

Microsoft Academic Search

This article focuses on theoretical and policy issues posed by financial integration among industrial countries since the mid-1950s. The problems of measuring international financial integration and of estimating its trend over the years are also explored. The role of the Euro-dollar market, as a major financial intermediary that channels short-term funds between the money markets of the industrial countries, is

Victor Argy; Zoran Hodjera

1973-01-01

381

Composite endpoints in clinical trials.  

PubMed

Composite endpoints are often used in clinical trials, especially in the cardiovascular area. Decreases in sample size requirements, ability to assess the net effect of an intervention and to avoid bias in presence of competing risks are the most cited advantages for their use. However, there is a risk of misinterpretation when heterogeneity among components with respect to either importance, number of events, or magnitude of treatment effect exist. In the following review we present a conceptual discussion about the rationale and interpretation of such variables. Also, a user's friendly guide to interpret the results of clinical trials based on composite endpoints is presented. We also present an empirical study that provides evidence of the use of misleading composite endpoints in cardiovascular clinical trials. Las variables de resultado combinadas en los ensayos clinicos son un recurso metodologico usado con frecuencia, especialmente en los estudios cardiovasculares. Las motivaciones más importantes para su utilizacion son aumentar la potencia estadística del estudio, valorar el beneficio neto de una intervencion y evitar una interpretacion errónea del resultado en presencia de riesgos competitivos. Sin embargo, su interpretación puede ser problemática si hay heterogeneidad entre los componentes en cuanto a su importancia, la frecuencia de eventos o el efecto de la intervencion. En la discusión que sigue se presenta un revisión conceptual de los problemas del uso y la interpretación de las variables de resultado combinadas en ensayos clinicos, especialmente los cardiovasculares. Se presenta además una sencilla guia de interpretacion de los resultados de los estudios que utilizan variables de resultado combinadas a partir de la cual se puede valorar nuestra confianza en dichos resultados. Finalmente, se presenta un estudio empírico sobre cuál ha sido el uso real de variables de resultado combinadas potencialmente problemáticas en ensayos clinicos cardiovasculares. PMID:24775785

Ferreira-González, Ignacio; Alonso-Coello, Pablo; Solà, Ivan; Pacheco-Huergo, Valeria; Domingo-Salvany, Antónia; Alonso, Jordi; Montori, Víctor; Permanyer-Miralda, Gaietá

2008-01-01

382

La terapia hormonal para la menopausia y el cáncer  

Cancer.gov

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

383

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.

384

Distribuicao DOS Espacos Verdes Em Areas Urbanas: Cartografia E Analise Comparative Entre Dados TM/LANDSAT E HRV/SPOT (Distribution of Green Areas in Urban Areas: Cartography and Comparative Analysis of LANDSAT TM and HRV/SPOT Data).  

National Technical Information Service (NTIS)

The intense urbanization process that took place during the last decades in Brazil has strongly reduced the vegetation component, thus affecting the quality of life in these urban areas. Currently, the qualitative and quantitative mapping of vegetation wi...

A. L. R. Carrara C. Foresti J. R. Dossantos

1991-01-01

385

Variação da qualidade da madeira entre grupos fenotípicos de clones de Eucalyptus urophylla S.T. Blake da Ilha de Flores, Indonesia Wood quality variation among phenotypic groups of clones Eucalyptus urophylla S.T. Blake from Flores Island, Indonesia  

Microsoft Academic Search

RESUMO: O objetivo do presente trabalho foi estudar parâmetros de qualidade da madeira (densidade básica, comprimento, largura, diâmetro e espessura da parede das fibras) de clones de Eucalyptus urophylla, da Ilha de Flores, Indonésia, agrupados pelas características silviculturais e botânicas. A população base constituiu-se de um banco clonal, com 6 anos de idade, implantado no Horto Florestal Nossa Senhora Aparecida,

Osmar Francisco Ruy; Mário Ferreira; Mário Tomazello Filho

386

AS DOENÇAS SEXUALMENTE TRANSMISSÍVEIS SÃO PROBLEMAS ENTRE GESTANTES NO CEARÁ? ARE SEXUALLY TRANSMITTED DISEASES A PROBLEM TO PREGNANT WOMEN IN CEARÁ? MENÇÃO HONROSA - PRÊMIO MELHOR TRABALHO COMPLETO, CATEGORIA: EPIDEMIOLOGIA  

Microsoft Academic Search

Introduction: the complications of STD (Sexually Transmitted Diseases) include ectopic pregnancy, spontaneous abortions, stillbirth, prematurity, conge- nital perinatal and puerperal infection. In Brazil, studies in pregnant women are scarce, although STD have an important impact in pregnancy outcome. Objective: to estimate the prevalence of syphilis, gonorrhea, chlamydeous, and trichomoniasis in pregnant women in two municipalities of Ceará and to identify

Telma A Martins; Pierre Y-Bello; Martha D Bello; Lígia Regina; SK Pontes; Lúcia V Costa; Iracema S Miralles; Telma Régia

387

Sinergismo entre radiacao ultravioleta e redutona em Escherichia coli UVR: analise quantitativa das lesoes produzidas. (Synergism between ultraviolet radiation and reductone in Escherichia coli UVR: quantitative analysis of produced injuries).  

National Technical Information Service (NTIS)

The relationship between cell viability and DNA-single and double-strand breaks induced by UV-reductone treatment of E.coli AB1157 and AB1886 cells was studied. A molecular and quantitative analysis was done by sedimentation in sucrose gradients. Bacterio...

H. C. Mota

1980-01-01

388

Variabilité intra-saisonnière et multi-décennale de la téléconnexion entre les pressions de surface (100°W–50°E ; 30°–70°N) et les ENSO\\/LNSO (1873–1996)  

Microsoft Academic Search

The relationships between an index of the NINO3.4 region and the wintertime sea level pressure (hereafter SLP) anomalies on the extratropical North Atlantic and the bordering areas (100°W–50°E; 30°–70°N) are studied for 1873–1996. This study emphasizes the need of a careful pooling of months and the multi-decadal variability of the ENSO\\/LNSO influence on the extratropical North Atlantic. We calculate the

Isabelle Gouirand; Vincent Moron

2000-01-01

389

Similarities between punching and shear strength of steel fiber reinforced concrete (SFRC) slabs and beams Similaridades entre resistência à punção em lajes-cogumelo e ao cisalhamento em vigas de concreto armado com fibras de aço  

Microsoft Academic Search

Resumo This paper discusses the influence of steel fiber in both punching strength of flat slabs and shear strength of concrete beams. Similarities in the structural behavior were observed in an experimental analysis of analogous slabs and beams. The analogous slabs and beams had the same height, longitudinal reinforcement ratio and concrete properties. Concrete mixtures were designed to attain different

J. B. DE HANAI; K. M. A. HOLANDA

2008-01-01

390

Toward Gender Equality: The Role of Public Policy. An Overview (Vers l'Egalite des Sexes: Le Role des Politiques Nationales. Apercu General) (Hacia la Igualdad Entre Hombres y Mujeres: El Papel de las Politicas Publicas. Panorama General).  

National Technical Information Service (NTIS)

The Overview, based on a World Bank report, outlines what governments and development agencies can do to work toward greater gender equality--one of the best investments a society can make. Public policy can affect investments in health, education, and in...

1995-01-01

391

Antecedentes de la evolucion historica de los recursos de uranio de la region de Cuyo entre 1951-1968. (Antecedents of historical evolution of the uranium resources in the Cuyo region, between 1951 and 1968).  

National Technical Information Service (NTIS)

The present article pretends to summarize the initial stage of the development of national uranium resources - focusing the labor done by the Escuela Superior de Ingenieria en Combustible of the Universidad Nacional de Cuyo - between the years 1951 and 19...

A. A. Vergara Bai

1992-01-01

392

Actitud hacia la donación renal de vivo entre el personal sin relación con el trasplante en un hospital con programa de trasplante de órganos sólidos de cadáver y de vivo  

Microsoft Academic Search

IntroductionBecause of the shortage of kidney organs available for transplantation and the favorable outcomes described in living donation, this type of donation is necessity in Spain. However, living donation has yet to be developed and this may be partly because hospital personnel do not have an entirely favorable attitude toward this type of donation. The objective of this study was

Antonio Ríos-Zambudio; Pablo Ramírez; Laura Martínez; Mariano J. Montoya; M. Mar Rodríguez; Jesús Alcaraz; Dolores Lucas; Pascual Parrilla

2007-01-01

393

Preliminary Modelling Study of Geochemical Interactions between a Used-Fuel Disposal Vault and the Surrounding Geosphere (Etude de Modelisation Preliminaire des Interactions Geochimiques Entre une Enceinte de Stockage Permanent de Combustible Irradie et la Geosphere Environnante).  

National Technical Information Service (NTIS)

The purpose of the study was to estimate the general magnitude and significance of vault-induced geochemical changes over an expected range of temperatures. The results of the preliminary modeling are used broadly to evaluate the implications of these cha...

J. McMurry

1995-01-01

394

Portrait des différences entre les genres dans le contexte de l'apprentissage de l'électricité en fonction de la certitude exprimée lors de la production de réponses  

Microsoft Academic Search

This exploratory research aims to describe changes in the “feeling-of-knowing” (FOK) experienced by high school students who are being introduced to the fundamental concepts of electricity through learning by discovery. The analysis focuses first on the initial state of boys and girls in terms of their prior experience and the perception they have of their abilities in science and technology,

Patrice Potvin; Martin Riopel; Patrick Charland; Julien Mercier

2011-01-01

395

Relación entre algunos aspectos climatológicos y el desarrollo de la langosta centroamericana Schistocerca piceifrons piceifrons en el Pacífico Norte de Costa Rica durante la fase cálida del fenómeno El Niño-Oscilacion Sur (ENOS)  

Microsoft Academic Search

Enviromental temperature, relative humidity, precipitation and solar radiation are meteorological elements that affect distribution, growth rate, reproduction, migration and adaptation ways of insects. Some physilogics activities of locust are influenced by climatic patterns and season conditions. The Phases Change wich is a biological and morfological transformation of various species of gregarius locusts, is influenced by meteorological elements. On this way,

JOSÉ A. RETANA

396

Sobrepeso e obesidade e sua relação com a prática de atividade física e o consumo dietético entre adolescentes Overweight and obesity and their relation to physical activity and diet among adolescents  

Microsoft Academic Search

Introduction: Obesity in teenagers has been studied in many countries. It has been associated to eating habits and physical inactivity. Objective: This study aimed to analyze the frequency of overweight and obesity as related to physical activity and eating habits among adolescents. Methods: A sample of randomly selected 285 subjects of both sexes with ages ranging from 10 to 19

Luciano Meireles de Pontes

397

Conversado con su Medico: Consejos para Lograr una Buena Comunicacion Entre las Personas de la Tercera Edad y su Doctor (Talking With Your Doctor: A Guide for Older People).  

National Technical Information Service (NTIS)

How well you and your doctor talk to each other is one of the most important parts of getting good health care. A good patient-doctor relationship is a partnership. You and your doctor can work as a team, along with nurses, physician assistants, pharmacis...

2004-01-01

398

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

399

Mesure de la force des muscles rotateurs de l'épaule chez des sportifs sains de haut niveau (natation, volley-ball, tennis) par dynamomètre isocinétique : comparaison entre épaule dominante et non dominante  

Microsoft Academic Search

Objective. – To compare lateral rotator (LR) and medial rotator (MR) muscle strength of both shoulders in a sport involving asymmetrical movements (tennis), symmetrical movements (swimming), and symmetrical and asymmetrical movements (volley-ball).Materials and methods. – Retrospective study of 42 healthy elite athletes (18 women: 14 tennis players, 19 swimmers and 9 volleyball players. We evaluated the strength of LR and

G. Gozlan; L. Bensoussan; J.-M. Coudreuse; J. Fondarai; V. Gremeaux; J.-M. Viton; A. Delarque

2006-01-01

400

Body mass index, body weight perception and common mental disorders among university employees in Rio de Janeiro Índice de massa corporal, percepção do peso corpo- ral e transtornos mentais comuns entre funcionários de uma universidade no Rio de Janeiro  

Microsoft Academic Search

Abstract Abstract Abstract Abstract Objective: Objective: Objective: Objective: Objective: We tested the hypothesis that inadequate self-perception of body weight with or without obesity would be associated with common mental disorders (CMD). Method: Method: Method: Method: Method: We analyzed cross-sectional data from 4,030 university employees participating in the longitudinal Pró-Saúde Study Phase 1 (1999) in Rio de Janeiro. Participants (22-59 years

Alessandra Bento Veggi; Claudia S Lopes; Eduardo Faersteina; Rosely Sichieria

401

Índice de massa corporal, percepção do peso corporal e transtornos mentais comuns entre funcionários de uma universidade no Rio de Janeiro Body mass index, body weight perception and common mental disorders among university employees in Rio de Janeiro  

Microsoft Academic Search

Abstract Abstract Abstract Abstract Objective: Objective: Objective: Objective: Objective: We tested the hypothesis that inadequate self-perception of body weight with or without obesity would be associated with common mental disorders (CMD). Method: Method: Method: Method: Method: We analyzed cross-sectional data from 4,030 university employees participating in the longitudinal Pró-Saúde Study Phase 1 (1999) in Rio de Janeiro. Participants (22-59 years

Alessandra Bento Veggi; Claudia S Lopes; Eduardo Faerstein; Rosely Sichieri

402

Análise faciológica e estratigráfica da planície costeira de Soure (margem leste da ilha de Marajó-PA), no trecho compreendido entre o canal do Cajuúna e o estuário Paracauari  

Microsoft Academic Search

Soures's coastal plain, eastern Marajó island (Pará), is formed by muddy and sandy deposits, low gradient areas submitted to tidal and wave processes. The morphological features are tidal flats, estuaries, tidal channels and barrier-beach ridges . The faciological and stratigraphical analysis of six vibra-core with medium deph of four meters and from outcrops allowed a caracterization of depositional environments, temporal

Carmena Ferreira de França; Pedro Walfir Martins e Souza Filho; Maâmar El-Robrini

2007-01-01

403

ASYMMETRIC INFORMATION IN RURAL FINANCIAL MARKETS AND INTERLINKING OF TRANSACTIONS THROUGH THE SELF-HELP GROUPS \\/ INFORMATIONS ASYMETRIQUES SUR LES MARCHES FINANCIERS RURAUX ET LA PRESENCE DE TRANSACTIONS DES GROUPEMENTS D'ENTRE-AIDE  

Microsoft Academic Search

In many developing countries small borrowers have traditionally relied on informal lenders for their credit needs because of the limitations of self-finance and the lack of access to bank credit. This paper discusses the small borrower's lack of access to bank credit and other financial services within the framework of the asymmetry of information that exists in rural financial markets.

Gilberto M. Llanto

1990-01-01

404

Comparison of Ionospheric Electron Density Profiles Obtained with the International Reference Ionosphere (IRI) 79 Model and Observed at Cachoeira Paulista Comparacao Entre Perfis de Densidade Eletro Nica DA Ionsfera, Obtidos Pelo Modelo IRI 79 E Observados Em Cachoeira Paulista.  

National Technical Information Service (NTIS)

An ionospheric computer model IRI 79 (International Reference Ionosphere) was implemented. With a computer program developed for the determination of of the the ionospheric profile N(h), using ionograms a comparative study between the observed and predict...

E. R. Depaula A. C. R. Desouza I. J. Kantor S. L. G. Dutra

1982-01-01

405

O Imperio como Argumento: Um Contraponto entre Joaquim Nabuco e o Bispo D. Jose Mauricio da Rocha (The Empire as Argument: A Counterpoint between Joaquim Nabuco and the Bishop Dom Jose Mauricio da Rocha).  

ERIC Educational Resources Information Center

Dialogs with the previous article establishing a comparative analysis between the political acceptance present in the reactionary speech of Dom Jose Mauricio da Rocha and in the monarchist words of Joaquim Nabuco. (PA)

Marson, Izabel Andrade

1998-01-01

406

Vinculacion Entre La Educacion Y El Mundo Del Trabajo: Informe Final. (Coloquio Regional Caracas, Venezuela, Septiembre 2-6, 1985) = The Linkage Between Education and Employment: Final Report of the Regional Colloquium (Caracas, Venezuela, September 2-6, 1985).  

ERIC Educational Resources Information Center

At this regional colloquium 13 papers were presented concerning the relationship between education and employment. Themes addressed were: (1) the transformation of the workplace by technology and science; (2) the future of the disadvantaged population as a consequence of the technological revolution; and (3) the resulting changes in the education…

United Nations Educational, Scientific, and Cultural Organization, Santiago (Chile). Regional Office for Education in Latin America and the Caribbean.

407

Nonbreeding-Season Drivers of Population Dynamics in Seasonal Migrants: Conservation Parallels Across Taxa Facteurs hors reproduction intervenant sur la dynamique des populations de migrateurs saisonniers : analogie entre divers taxons  

Microsoft Academic Search

For seasonal migrants, logistical constraints have often limited conservation efforts to improving survival and reproduction during the breeding season only. Yet, mounting empirical evidence suggests that events occurring throughout the migratory life cycle can critically alter the demography of many migrant species. Herein, we build upon recent syntheses of avian migration research to review the role of non-breeding seasons in

Anna M. Calvert; Sandra J. Walde; Philip D. Taylor

2009-01-01

408

Estudo da evolução dinâmica fluvial dos rios do Amazonas com base em imagens de RADAR e satélite nos últimos 30 anos, balanço entre área de erosão e deposição e possíveis conseqüências para a ocupação humana  

Microsoft Academic Search

The Amazon region as resultant of geologic history and the climate, shelters a more extensive fluvial system and of bigger liquid mass of the Land. The analysis of products of remote sensing in the Amazônia is the technique that still persists as the main tool to assist in the execution of diverse scientific works. The agreement of the fluvial dynamics

Amaro Luiz Ferreira

409

Le recours aux MEGC pour l’analyse de l’accord de partenariat économique entre l’union européenne et les pays ACP : une revue de la littérature  

Microsoft Academic Search

The implementation of the Economic Partnership Agreement (EPA) between the European-Union and the ACP (Africa-Caribbean-Pacific) countries requires the progressive tariff dismantling against the products originating from the European Union. Many African countries are worried about this agreement and ask for a closer examination on socio-economic, sectoral and regional impacts. The debate is all the more difficult because the GDP growth

Jean-Marc Philip

2006-01-01

410

Comparacao entre os codigos RELAP5/MOD1 e TRAC-PD2 na simulacao da experiencia CANON. (Comparison between RELAP5/MOD1 and TRAC-PD2 codes in the CANON experience).  

National Technical Information Service (NTIS)

The present work reports comparisons between experimental and theoretical data done with the RELAP5/MOD1 and TRAC-PD2 codes, with particular emphasis on RELAP5/MOD1 code run with basic experimental data from the CANON depressurization simulation. This exp...

G. Sabundjian R. L. Freitas T. Neves Conti

1991-01-01

411

RELAÇÃO ENTRE NÍVEL DE ATIVIDADE FÍSICA E DESEMPENHO NO TESTE DE AVALIAÇÃO FÍSICA DE MILITARES The relationship between physical activity level and performance of militaries in physical evaluation tests  

Microsoft Academic Search

This study aimed to examine the relationship between the level of physical activity (PA) and the performance test of Brazilian Army militaries in physical evaluation test (PET). The sample, made by 121 military volunteers members of a military unit in the garrison of Porto Alegre, is characterized by individuals with average age of 20.62 years (±3.83), average stature of 1.74

Carlos Ricardo; Gomes de Souza Rocha; Miguel Comerlato

412

Relación entre los niveles de carga viral y los niveles de linfocitos CD4 en el diagnóstico de Cryptosporidium spp. en heces de niños de la Clínica Pediátrica de VIH\\/SIDA del Hospital Universitario del Valle, Cali, Colombia  

Microsoft Academic Search

SUMMARY Introduction: Cryptosporidium spp. (C. spp.) cause morbi-mortality in children with AIDS. Objective: To identify the association between viral load, CD4 levels and C. spp., presence in feces of children with AIDS. Materials and methods: Observacional study in children of the Hospital Universitario del Valle of Cali. Data like age, gender, origin, consanguinity, treatment, stage, maternal survival and weight, were

MIREY S IUFFI; MARIO A NGULO; PÍO L ÓPEZ; VÍCTOR H UGO; CONSUELO R OJAS

2006-01-01

413

Relación entre el nivel de actividad física en escolares durante el fin de semana y la prevalencia de obesidad Relationship between the level of physical activity in school during the weekend and the prevalence of obesity  

Microsoft Academic Search

The objective of the work was to quantify the prevalence of being overweight and obese in a group of students of Ourense (Spain) and its relation with the physical activity levels during weekend. One hundred and eleven scholars with an average age of 11.3 years participated in this study. Among them 42.3% were female and 57.7% male. Weight, height and

Francisco García De la Montaña; Montserrat Míguez Bernárdez; Julia De la Montaña Miguélez

2011-01-01

414

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

415

Contrôle structural du partage de Rb entre fluide et micas potassiques dans les pegmatites du Brásil Structural control of the Rb distribution between K-micas and fluid in Brazil pegmatites  

NASA Astrophysics Data System (ADS)

A geochemical study of pegmatitic micas from Minas Gerais State in Brazil was performed with an electron microprobe, in order to examine the variations of Rb, K, Al and F contents. It is observed a linear decreasing relationship between the [Rb/K] ratio of the micas and their contents in Al VI. The interpretation is based on the hypothesis that the partition coefficient CRb/Kmica/fl between fluid and mineral does not vary significantly as a function of temperature and pressure in the narrow conditions of crystallization of pegmatites. It is suggested that the relation: CRb/Kmica/fl=0.55×(5-[Al VI]) is of crystallochemical order. Micas with low contents in Al take higher contents in Rb because the potassic sites where Rb enters are larger. This relation gives another way of calculating the values [Rb/K] of the fluids knowing Rb, K, Al and Si in the micas. This crystallochemistry also allows us to foresee a direct correlation between Rb and F in the pegmatitic micas. To cite this article: J. Quéméneur et al., C. R. Geoscience 336 (2004).

Quéméneur, Joël; Volfinger, Marcel; Azevedo, Luciana

2004-02-01

416

AssociaÁªo entre Ìndice de ventilaÁªo e tempo de ventilaÁªo mec‚nica em lactentes com bronquiolite viral aguda Association between ventilation index and time on mechanical ventilation in infants with acute viral bronchiolitis  

Microsoft Academic Search

Objective: To evaluate the association between time on mechanical ventilation and anthropometric, clinical and pulmonary function variables, measured early, in infants on invasive mechanical ventilation with acute respiratory failure due to viral bronchiolitis, and the temporal progression of variables with significant correlations. Methods: Twenty-nine infants admitted to the pediatric intensive care unit of UNICAMP university hospital were studied. Acute viral

Armando A. Almeida-Jœnior; Marcos T. N. da Silva; C. B. Almeida; Breno M. Nery; D. Ribeiro

2005-01-01

417

Estudo polarografico sobre a formacao de complexos entre indio (III) e azoteto de sodio, em meio aquoso. (Polarographic study about the complex formation between indium (III) and sodium azide, in aqueous media).  

National Technical Information Service (NTIS)

The present work is a branch of the main work concerned with the complex formation between several metal cations and azide ligand in aqueous media. The polarographic behavior of indium in azide system showed the tendency of complexation. Using polarograph...

R. Tokoro M. Bertotti

1988-01-01

418

Changes in concentration–discharge regression parameters due to coal mining and reclamation activities \\/ Changements dans les paramètres de régression entre concentration et débit, causés par l’exploitation minière de charbon et des activités de reconversion  

Microsoft Academic Search

Assessment of the impacts of mining and reclamation, and design of management practices to reduce chemical loads in stream channels, require knowledge of changing hydrological conditions and of changing sources and rates of release of chemicals into stream waters. One simple method for evaluating these impacts is to combine flow duration curves with regression relations between surface-water chemical concentrations (C)

James V. Bonta

2005-01-01

419

La Desercion Escolar en los Niveles de Sexto y Noveno Grado: Una Comparacion Entre Zonas Rurales y Urbanas. Boletin 219 (The Educational Desertion in the 6th and 9th Grades: A Comparison Between Rural and Urban Zones. Bulletin 219).  

ERIC Educational Resources Information Center

In 1962 and again in 1965, a group of sixth and ninth grade students in selected schools in four Puerto Rican communities were interviewed to investigate the factors influencing students' decision to withdraw from school before completing twelfth grade and to identify some characteristics of dropouts. Of 616 students interviewed in 1962, 20.9% of…

Lopez, Maria I. Hernandez; And Others

420

RELACION ENTRE CARACTERISTICAS DEL TRACTO DIGESTIVO Y LOS HABITOS ALIMENTARIOS DE PECES DEL RIO YUCAO, SISTEMA DEL RIO META (COLOMBIA) RELATIONSHIP BETWEEN DIGESTIVE TRACT CHARACTERISTICS AND DI ETS OF FISHES FROM YUCAO RIVER, META RIVER SYSTEM (COLOMBIA)  

Microsoft Academic Search

Stomach contents of 21 species of fishes catched in two sites of Yucao river on different periods of the year were analyzed. Digestive structures were classified according to the mouth position, stomach and teeth form, intestine length and gill rakers number. These characteristics were related with generalized four food habits: detritivorous, herbivorous, periphyton feeders and omnivorous. Teeth and stomach shapes

René M. Sánchez; Germán Galvis; Pedro F. Victoriano

421

Como ayudar a su hijo durante los primeros anos de la adolescencia: Para los padres con ninos entre las edades de 10 a 14 anos (Helping Your Child through Early Adolescence: For Parents of Children from 10 through 14).  

ERIC Educational Resources Information Center

Recognizing that parents and families can greatly influence the development of their 10- through 14-year-olds, this Spanish-language booklet is part of a national effort to provide parents with the latest research and practical information to help them support their children both at home and in school. The booklet is organized in 13 sections…

Paulu, Nancy

422

Dependance de la production de photons durs avec le parametre d'impact dans les collisions entre ions lourds aux energies intermediaires. (Relation between hard photon production and impact parameter in heavy ion collisions at intermediate energies).  

National Technical Information Service (NTIS)

Hard photons produced in heavy-ions collisions at intermediate energies have been used in order to study hot and compresses nuclear matter created in these collisions (at Ganil). It was found that Bremsstrahlung radiation emitted in np collisions is the m...

G. Martinez Garcia

1994-01-01

423

Fundamental Trends in the Evolution of Relations between Employers, Workers and Governments in Africa (Tendances Fondamentales de l'Evolution des Relations entre Employeurs, Travailleurs et Gouvernements en Afrique).  

National Technical Information Service (NTIS)

A panoramic survey is made of the fundamental tendencies prevailing in the relations between employers, workers, and public authorities in the African countries which have just attained independence. There would appear to be not so much a question of bett...

C. Bokonga

1971-01-01

424

Projeto observatórios virtuais: educação através de telescópios robóticos  

NASA Astrophysics Data System (ADS)

O principal objetivo do projeto Observatórios Virtuais é o ensino na área de ciências através de atividades práticas desenvolvidas em colaboração entre instituições de pesquisa em astronomia e escolas de ensino médio e fundamental. Este ano deverá ser concluída a implantação do programa piloto de estudos, pesquisas e observação astronômica direta, com utilização em tempo real de telescópios robóticos, que assim funcionarão como "observatórios virtuais". O objetivo pedagógico das atividades práticas baseadas nas imagens atronômicas é desenvolver as habilidades e competências dos alunos no uso do método científico. Para isso, serão realizados projetos interdisciplinares, a partir de observações astronômicas, já que a astronomia é uma área interdisciplinar por excelência. Essas atividades terão níveis diferenciados de complexidade, que podem ser adequados aos vários graus do ensino e realidades regionais. Será dada ênfase ao desenvolvimento e aplicação em São Paulo, onde atua a equipe do IAG/USP. Como resultados apresentados no presente trabalho, temos a criação de um software em português para o processamento de imagens obtidas através de CCDs e a elaboração de material para as atividades educacionais relacionadas.

Santana, P. H. S.; Shida, R. Y.

2003-08-01

425

The Trade-off between Inflation and Unemployment: A Survey of the Econometric Evidence for Selected Countries (La relation inverse entre l'inflation et le chômage: une analyse des résultats empiriques dans certains pays sélectionnés) (Relación de correspondencia entre la inflación y el desempleo: estudio de las pruebas econométricas para países seleccionados)  

Microsoft Academic Search

Il s'est avéré très difficile, dans de nombreux pays, de concilier le plein emploi et la stabilité des prix. A en juger d'après les expériences antérieures, les responsables de la politique économique se heurtent au dilemme d'une relation inverse: les efforts pour accroître la production et l'emploi en augmentant le volume de la demande globale ont habituellement pour effet d'accroître

Morris Goldstein

1972-01-01

426

Urbanization and the groundwater budget, metropolitan Seoul area, Korea  

NASA Astrophysics Data System (ADS)

The city of Seoul is home to more than 10 million people in an area of 605 km2. Groundwater is ed for public water supply and industrial use, and to drain underground facilities and construction sites. Though most tap water is supplied from the Han River, the quantity and quality of groundwater is of great concern to Seoul's citizens, because the use of groundwater for drinking water is continuously increasing. This study identifies the major factors affecting the urban water budget and quality of groundwater in the Seoul area and estimates the urban water budget. These factors include leakage from the municipal water-supply system and sewer systems, precipitation infiltration, water-level fluctuations of the Han River, the subway pumping system, and domestic pumping. The balance between groundwater recharge and discharge is near equilibrium. However, the quality of groundwater and ability to control contaminant fluxes are impeded by sewage infiltration, abandoned landfills, waste dumps, and abandoned wells. Résumé. La ville de Séoul possède une population de plus de 10 millions d'habitants, pour une superficie de 605 km2. Les eaux souterraines sont pompées pour l'eau potable et pour les usages industriels, ainsi que pour drainer les équipements souterrains et les sites en construction. Bien que l'essentiel de l'eau potable provienne de la rivière Han, la quantité et la qualité de l'eau souterraine présentent un grand intérêt pour les habitants de Séoul, parce qu'on utilise de plus en plus l'eau souterraine pour l'eau potable. Cette étude identifie les facteurs principaux qui affectent la qualité de l'eau souterraine dans la région de Séoul et fait l'estimation du bilan d'eau urbaine. Les principaux facteurs affectant le bilan d'eau urbaine et la qualité de l'eau souterraine sont les fuites du réseau d'adduction et du réseau d'égouts, l'infiltration des eaux de précipitation, les fluctuations du niveau de la rivière Han, le réseau de pompage du métro et les pompages privés. Le bilan entre la recharge de la nappe et sa décharge est proche de l'équilibre. Cependant, les infiltrations d'eaux usées, les décharges abandonnées, les décharges d'ordures et les puits abandonnés portent atteinte à la qualité de l'eau souterraine et à la capacité de contrôler les flux de contaminants. Resumen. La ciudad de Seúl tiene más de 10 millones de habitantes en un área de 605 km2. Se bombea aguas subterráneas para abastecimiento urbano y para usos industriales, así como para el drenaje de instalaciones subterráneas y de solares en construcción. Aunque la mayor parte del agua de boca procede del río Han, los ciudadanos de Seúl están muy concienciados por la cantidad y calidad de las aguas subterráneas, ya que su explotación para uso de boca está experimentando un continuo incremento. El presente estudio identifica los factores que más afectan a la calidad de las aguas subterráneas en el área de Seúl y hace una estimación del balance de agua en el territorio urbano. Entre los factores principales que afectan al balance y a la calidad de las aguas subterráneas, se incluye el lixiviado de la red municipal de suministro y de la red de alcantarillado, la infiltración de agua de lluvia, las fluctuaciones del nivel del río Han, el sistema de bombeo del metro y los bombeos domésticos. El balance entre la recarga y la descarga en el acuífero está próximo al equilibrio. Sin embargo, la calidad de las aguas subterráneas y la capacidad de controlar los flujos de contaminación están amenazadas por la infiltración de aguas residuales, vertederos abandonados, depósitos de residuos y pozos abanadonados.

Kim, Yoon-Young; Lee, Kang-Kun; Sung, Ig Hwan

2001-07-01

427

Prediction uncertainty of plume characteristics derived from a small number of measuring points  

NASA Astrophysics Data System (ADS)

A small number of measuring points may inflict a bias on the characterisation of flow and transport based on field experiments in the unsaturated zone. Simulation of pure advective transport of a Gaussian plume through a setup of 30 regularly placed measuring points revealed regular temporal fluctuations about the real spatial moments. An irregular setup predicted both irregular fluctuations and larger discrepancies from the real value. From these considerations, a regular setup is recommended. Spatial moments were sensitive to the plume size relative to the distance between individual measuring points. To reduce prediction errors of the variance, the distance between the measuring points should be less than twice the standard deviation of the examined plume. The total size of the setup should cover several standard deviations of the plume to avoid mass being lost from the monitored area. Numerical simulations of a dispersing plume (comparing calculations based on 9000 nodes with 30 measuring points) revealed that vertical and horizontal centres of mass were predicted well at all degrees of heterogeneity, and the same was the case for horizontal variances. Vertical variances were more susceptible to prediction errors, but estimates were of the same order of magnitude as the real values. Résumé Lorsque l'on cherche à caractériser l'écoulement et le transport à partir d'expériences de terrain dans la zone saturée, il arrive qu'un petit nombre de points introduisent un biais. La simulation d'un transport purement advectif d'un panache gaussien au travers d'un ensemble de 30 points de mesures espacés régulièrement fait apparaître des variations temporelles régulières autour des moments spatiaux réels. Un ensemble irrégulier conduit à prédire à la fois des variations irrégulières et de plus grandes divergences par rapport à la valeur réelle. A partir de ces constations, un ensemble régulier est recommandé. Les moments spatiaux sont apparus sensibles à la dimension du panache en fonction de la distance entre les différents points de mesure. Afin de réduire les erreurs de prédiction de la variance, la distance entre les points de mesure doit être inférieure au double de l'écart-type du panache examiné. La dimension totale de l'ensemble doit couvrir une étendue de plusieurs écarts-types du panache pour éviter qu'une partie de la matière échappe à la zone surveillée. Des simulations numériques du panache en dispersion (les calculs de comparaison sont basés sur 9000 nœuds avec 30 points de mesure) montrent que le centre vertical et le centre horizontal de la matière dispersée ont été bien prédits à tous les degrés d'hétérogénéité, de même que pour les variances horizontales. Les variances verticales ont été plus sensibles aux erreurs de prédiction, mais les estimations étaient du même ordre de grandeur que les valeurs réelles. Resumen Un número pequeño de puntos de medida puede producir un sesgo en la caracterización en campo del flujo y transporte de solutos en la zona no saturada. La simulación de transporte advectivo (no difusivo) de un penacho Gaussiano a travs de un conjunto de 30 puntos de medida regularmente distribuidos revelan fluctuaciones temporales regulares de los momentos espaciales del penacho. Una distribución irregular de puntos de medida predijo a su vez fluctuaciones irregulares, más alejadas de la realidad, por lo que se recomienda el uso de esquemas de muestreo regulares. Los momentos espaciales fueron sensibles a la relación entre tamaño del penacho y distancia entre puntos de medida. Para reducir los errores en la predicción de la varianza, la distancia entre puntos de observación debe ser menor que dos veces la desviación estándar del penacho. El tamaño del área muestreada debe cubrir varias desviaciones estándar del penacho para evitar perder parte de la masa. Las simulaciones numricas en un penacho dispersivo, comparando los cálculos basados en 9000 nudos con las 30 medidas, mostraron que las posiciones de los centros de masa y

French, H. K.; van der Zee, S. E. A. T. M.; Leijnse, A.

428

Identificazione dei traumatismi stradali correlati all'uso di alcol e di altre sostanze psicoattive: studio in un Pronto Soccorso fiorentino Identification of traffic accident traumas associated with the use of alcohol and other psychoactive substances. A survey in an emergency room in Florence  

Microsoft Academic Search

This pilot study presents some demographic characteristics of patients involved in traffic accidents associated with the use of psychoactive substances. 70 patients admitted to the Emergency Room (ER) of Santa Maria Annunziata Hospital (Florence) for traffic accidents were assessed and compared with 70 control patients admitted to ER during the same period but for different reasons. Urine and blood samples

GABRIELE BARDAZZI; FRANCESCO MARI; FRANCESCO CIPRIANI; FABIO VOLLER; ALESSANDRO ROSSELLI; ELISABETTA BERTOL; PAOLO PENNATI; ALLAMAN ALLAMANI

429

Plan Maestro para la Recoleccion, Tratamiento y Reuso de las Aguas Residuales. Creado para el Uso Especifico de la Ciudad de Chihuahua, Chihuahua, Mexico (Master Plan for the Collection, Treatment and Re-Use of Waste Water. Created for the Use of City of Chihuahua, Mexico).  

National Technical Information Service (NTIS)

The report, written in Spanish, presents the results of a feasibility study prepared by Woodward Clyde Associates for the Municipality of Chihuahua, Mexico. The report was undertaken at the request of the Presidencia Municipal de Chihuahus (PMC) concernin...

1992-01-01

430

Use of an Automatic Procedure for Determination of Classes of Land Use in the Teste Araras Area of the Peripheral Paulist Depression (Utilizacao de Procedimento Automatico Para a Determi Nacao de Classes de USO DA Terra NA Depessao Periferica Paulista, Area Teste Araras).  

National Technical Information Service (NTIS)

An evaluation of the multispectral image analyzer (system Image 1-100), using automatic classification, is presented. The region studied is situated. The automatic was carried out using the maximum likelihood (MAXVER) classification system. The following ...

N. Dejesusparada M. A. Lombardo D. D. Valeriano

1981-01-01

431

Estimativa de Fitomassa Aerea Em Regiao de Floresta Tropical COM USO de Dados TM-LANDSAT 5 E HRV-SPOT 1 (Estimation of Above-Ground Phytomass in a Tropical Forest Using TM-LANDSAT 5 E HRV-SPOT 1 Data).  

National Technical Information Service (NTIS)

The Amazon forest has been the subject of much debate due to the extent of human intervention occurring there. The Brazilian Amazon, with 3.5 million sq km, requires efficient systems of data collection for rational management of its forest resources. The...

N. J. Zerbini

1992-01-01

432

XXI Seminario Nazionale. La Valutazione dell'Uso e della Sicurezza dei Farmaci: Esperienze in Italia. Istituto Superiore di Sanita. Roma, 10 Dicembre 2012. Riassunti. (XXI National Workshop. Drug Use and Safety: Italian Experiences. Istituto Superiore di Sanita. Rome, December 10, 2012. Abstract Book).  

National Technical Information Service (NTIS)

This book includes the abstracts that will be presented during the Seminar as oral communications or posters. The Seminar, this year in its twenty first edition, is divided in three sessions that will focus on some of the main research topics on drugs in ...

F. M. Ippolito P. Ruggeri R. Da Cas

2012-01-01

433

USO DEL TERRITORIO, IMPATTO AMbIENTALE, bENESSERE DEGLI ANIMALI E SOSTENIbILITà ECONOMICA DEI SISTEMI DI ALLEvAMENTO DELLA vACCA DA LATTE PRESENTI IN MONTAGNA. IL CASO DI STUDIO DELL'ALTOPIANO DI ASIAGO  

Microsoft Academic Search

Dairy farming in the mountain regions has seen a deep transformation of the traditional production sys- tem based on the consumption of the local forage and the grazing entire herd of dual purpose animals on alpine pasture. Driven by a favourable milk price and by a convenient cost of the energy concentrates has seen a continuous growth of intensive systems

435

Progetto. Sviluppo dell'uso di Protoni in Terapia Oncologica. Relazione Sulle Riverche di Biofisica, Radiobiologia, Dosimetria e Sviluppo dei Piani di Trattamento e Degli Strumenti Informatici (Project. Development of the Use of Protons in Oncological Therapy. Report on Research Activities in the Fields of Biophysics, Radiobiology, Dosimetry and Development of Software Packages and Treatment Planning.)  

National Technical Information Service (NTIS)

In Fall 1992, the former Physics Laboratory of the Italian National Institute of Health enforced the program Development of the Use of Protons in Oncological Therapy, often referred to as the TOP project (short for Oncological Therapy with Protons in Ital...

B. Caccia M. Belli M. Grandolfo M. A. Tabocchini S. Onori

2004-01-01

436

Valutazione dell'uso e della Sicurezza dei Farmaci: Esperienze in Italia. Seminario Nazionale XV, Roma, Italia, Dicembre 11-12, 2006 (Drug Use and Safety: Italian Experiences. National Workshop XV. Held in Rome, Italy on December 11-12, 2006).  

National Technical Information Service (NTIS)

This year, in occasion of its 15th edition, the Seminar is organized, for the first time, in two days in order to allow a thorough reflection about the main topics concerning the status of pharmacoepidemiology in Italy. Here are reported the abstracts of ...

2006-01-01

437

XVIII Seminario Nazionale. La valutazione dell'uso e della sicurezza dei farmaci: esperienze in Italia. Istituto Superiore di Sanita. Roma, 14 Dicembre 2009. (XVIII National Workshop. Drug Use and Safety: Italian Experiences. Istituto Superiore di Sanita. Rome, December 14, 2009. )  

National Technical Information Service (NTIS)

This book includes the abstract that will be presented during the Seminar as oral communications or posters. This year the Seminar, divided in three sessions, will focus on some of the main research topics on drugs in Italy. In the first session the repor...

F. M. Ippolito P. Ruggeri R. Da Cas

2009-01-01

438

Needed Research on the Emotions as Variables in Teaching, Learning, and the Development of Social Skills. A Special Report of the USOE-Sponsored Grant Study: Critical Apparisal of Research in the Personality-Emotions-Motivation Domain. IBR Report No. 73-23.  

ERIC Educational Resources Information Center

This task group report is one of a series prepared by eminent psychologists who have served as consultants in the U.S.O.E.-sponsored grant study to conduct a Critical Appraisal of the Personality-Emotions-Motivation Domain. In order to achieve the goal of identifying important problems and areas for new research and methodological issues related…

Izard, Carroll E.; And Others

439

A Micro-Ultrastable Oscillator (micro-US0) for Micro/Nano Sciencecraft  

NASA Technical Reports Server (NTRS)

Syntonics LLC developed a prototype micro-Ultra Stable Oscillator (micro-USO) under a Space Base Technology Grant (NAGS-10395). Syntonics conducted the micro-USO Program in two phases. In Phase I, we developed a set of verified analytical models (including thermal, electrical, and control models) for a baseline USO, conducted a series of six technology studies, and built three approx.9OOg prototype units. These prototypes provided a tool for evaluating competing design topologies. In Phase II we prepared the conceptual design of a approx.100-15Og micro-USO.

2003-01-01

440

Medicinal ethnobotany in Huacareta (Chuquisaca, Bolivia)  

PubMed Central

Background The aim of this study was to document the types of diseases treated by the use of medicinal plants, their main applications and also to have a report of the major diseases treated at the Hospital of San Pablo de Huacareta (Chuquisaca Bolivia). Methods We conducted semi-structured interviews on the use medicinal plants with 10 local informants, and categorized the kinds of diseases treated by traditional medicine. We obtained reports of cases treated at the Hospital of Huacareta in order to compare the use frequency of traditional medicine and allopathic medicine for the treatment of recurrent diseases in the area. Results Our survey identified 258 traditional medicine uses, spanning a total of 13 diseases categories and including 91 native and exotic plant species and one unidentified sample plant type. Gastrointestinal disorders (55%) were most frequently treated with medicinal plants, followed by afflictions of the musculoskeletal system (25%) and dermatological disorders (24%). Hospital information indicates that the most common diseases are acute respiratory infections (47%) and acute diarrheal diseases (37%). The herbal remedies were mostly used in the form of teas and decoctions. The informants used mainly native plant species, although exotic species has been introduced to the pharmacopoeia. Conclusions The treatment of gastrointestinal disorders is the primary objective of the medical ethnobotany of the inhabitants of Huacareta, while respiratory system diseases are mostly treated in the hospital. Looking at the data from the Hospital records we can infer that gastrointestinal disorders are among the most common diseases in the study area. For most respondents, traditional medicine is a reliable choice for the care of their illnesses. However, the preference of the population for either traditional medicine or allopathic medicine needs to be clarified in future comparative studies to obtain more convincing results. The results presented can be used as a base for subsequent work related to traditional medicine and its contribution to allopathic medicine in San Pablo de Huacareta. Resumen Introducción El objetivo del presente estudio fue documentar los tipos de enfermedades tratadas mediante el uso de plantas medicinales, sus aplicaciones principales y también tener un reporte de las enfermedades mayormente atendidas en el Hospital de San Pablo de Huacareta (Chuquisaca, Bolivia). Métodos Se realizaron encuestas semiestructuradas a 10 informantes locales anotando los usos atribuidos a sus plantas medicinales, se agruparon las plantas por categorías de enfermedades tratadas en la medicina tradicional. Se obtuvieron reportes de casos tratados en el Hospital de Huacareta para poder relacionar el tratamiento de enfermedades recurrentes en la zona entre la medicina tradicional y la medicina occidental. Resultados Se reportaron 91 especies nativas y exóticas, además de un espécimen indeterminado exótico que intervienen en un total de 258 aplicaciones medicinales, las cuales son empleadas en un total de 13 categorías de enfermedades. Los desórdenes gastrointestinales (55%) son mayormente tratados mediante plantas medicinales, seguidas de las afecciones al sistema esqueleto-muscular (25%) y enfermedades dermatológicas (24%). La información del Hospital indica que las enfermedades más frecuentes son Infecciones Respiratorias Agudas (47%) y Enfermedades Diarreicas Agudas (37%). Los remedios vegetales se emplean en forma de infusiones y cocciones principalmente. Se emplean mayormente plantas nativas, también se introdujo en la farmacopea médica el uso de plantas exóticas al lugar. Conclusiones El tratamiento de trastornos gastrointestinales constituye el objetivo primordial de la etnobotánica médica de los habitantes de Huacareta, las enfermedades del sistema respiratorio, son mayormente tratadas en el Hospital. Observando los datos del libro de consultas del Hospital, se puede inferir que los desórdenes gastrointestinales

2012-01-01

441

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

442

Comunicaci?n de pareja y VIH en mujeres en desventaja social  

PubMed Central

Introducción La epidemia de VIH y SIDA se ha diseminado rápidamente a nivel mundial tendiendo a la feminización, pauperización y heterosexualización. La comunicación de pareja en torno el VIH es descrita como uno de los factores protectores en la adquisición de esta enfermedad, favoreciendo la adopción de conductas sexuales seguras tales como la negociación de pareja y la utilización de preservativo, consideróndose como un pilar fundamental en la incorporación de medidas de autocuidado en la sexualidad femenina. Objetivo Determinar el nivel de comunicación de pareja en torno al VIH en mujeres chilenas en desventaja social. Metodología Cuatrocientas noventa y seis mujeres contestaron la entrevista inicial de la investigación “Testing an HIV/AIDS Prevention Intervention for Chilean Women” (RO1 TW 006977 PI Cianelli). Se utilizó la escala “Health protective sexual communication scale (HPC)” (0–10 puntos). Se realizó un análisis descriptivo utilizando el programa SPSS 16.0. Resultados El promedio del nivel de comunicación de pareja fue de 3,26 ± 2,7 puntos con la pareja principal, de 2,52 ± 2,48 puntos con una segunda pareja y de 0 puntos con una tercera pareja. Los temas de menor comunicación entre las parejas fueron el uso de preservativo y la realización del test para VIH antes de tener relaciones sexuales. Conclusión Las mujeres de la muestra presentan bajos niveles de comunicación de pareja en relación a VIH con todas sus parejas sexuales. Son necesarias estrategias que potencien este tópico dentro de las intervenciones de prevención de VIH y SIDA de manera de fortalecer la adopción de conductas de autocuidado en torno al tema.

Rosina Cianelli, A.; Lilian Ferrer, L.; Margarita Bernales, S.; Natalia Villegas, R.

2009-01-01

443

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

444

Observação do abrilhantamento de limbo solar e de estruturas filamentares em 48 ghz utilizando a técnica de regularização adaptativa  

NASA Astrophysics Data System (ADS)

O radiotelescópio do Itapetinga tem sido utilizado em campanhas de observações de explosões solares gerando um grande número de mapas diários em 48 GHz como sub-produto destas observações. A resolução espacial do telescópio de 14m do Itapetinga nesta freqüência é de aproximadamente dois minutos de arco. Estruturas de interesse para análise da atmosfera solar quiescente tais como os filamentos e o anel de abrilhantamento do limbo são de dimensão angular moderada da ordem ou ligeiramente menores que a resolução do telescópio. É conhecido que a convolução da função de espalhamento do telescópio, PSF (padrão de ganho do feixe) borra as estruturas de dimensão angular abaixo do HPBW (largura a meia potência do feixe) e portanto é comum a busca por técnicas de restauração que eliminem pelo menos em parte este borramento. Estudamos a restauração destas radioimagens usando a técnica de regularização adaptativa e os resultados ressaltam estas estruturas espaciais de pequeno contraste. O algoritmo da regularização adaptativa faz uso de k imagens, chamadas protótipos, obtidas através da variação de parâmetros de um filtro de regularização. Para controle da qualidade da restauração utilizamos uma imagem de alta resolução espacial obtida na linha H-a e a PSF do Itapetinga para borrá-la. Pequenos desvios, entre a PSF utilizada para o borramento e a PSF utilizada na restauração, produziram alguns desvios notáveis na imagem restaurada porém a adição de ruído nas simulações de restauração foram mais influentes no cálculo da rugosidade da imagem e portanto mais limitante para a restauração. Apresentamos como nosso primeiro resultado uma imagem em 48 GHz com a presença clara do abrilhantamento de limbo que não estava evidente na imagem original e traços de estruturas filamentares, porém ainda sem grande evidência.

Machado, W. R. S.; Mascarenhas, N.; Costa, J. E. R.; Silva, A. V. R.

2003-08-01

445

Revision curricular a partir de un analisis comparativo de las discrepancias en los curriculos de una escuela de optometria en Puerto Rico con las competencias requeridas para las agencias de revalida y acreditacion 2004  

NASA Astrophysics Data System (ADS)

El proposito de esta investigacion, un estudio cualitativo de caso, fue comparar y contrastar el curriculo vigente de la Escuela de Optometria de la UIAPR con las competencias y estandares requeridos por las agencias de acreditacion y de revalida. Con este proposito, decidimos realizar una revision y un analisis de documentos: el prontuario de cada uno de los cursos de los curriculos implantados en el 1993 y en el 2001; las competencias y estandares establecidos por las agencias de revalida y de acreditacion; y las estadisticas en las que se analiza el porcentaje de estudiantes que aprueban cada una de las partes de los examenes de revalida entre el 1998 al 2003. Se realizaron entrevistas dirigidas para dar apoyo y complementar la revision y el analisis de estos documentos. Los participantes de las entrevistas fueron tres estudiantes de la clase de optometria del 2004 (ultima clase del curriculo del 1993); tres estudiantes de la clase de optometria del 2005 (primera clase graduanda del curriculo vigente) y tres profesores y/o directores de los Departamentos de Ciencias Basicas, Ciencias Clinicas y Cuidado al Paciente. Esta investigacion se enmarco en el modelo de evaluacion curricular de discrepancia de Malcolm Provus y en el modelo de desarrollo basado en competencias. Uno de los hallazgos mas importantes del estudio es que los cambios que se implantaron al curriculo del 2001 no han logrado que los estudiantes mejoren su ejecucion en los examenes de revalida. Por otro lado, se encontro que el curriculo vigente atiende completamente los estandares de la practica de Optometria, pero no las competencias. Esta informacion fue validada mediante el uso de una tabla de cotejo para el analisis de los cursos y de la informacion obtenida de las entrevistas. El estudio determina y concluye que existen discrepancias entre los prontuarios de los cursos del curriculo y las competencias requeridas por la agencia de revalida. Segundo, que el Departamento de Ciencias Basicas es el que presenta mas deficiencias en el desarrollo de las competencias. El investigador recomienda disenar e implantar un curriculo basado en competencias y proveer formacion en didactica y procesos de aprendizaje a los profesores.

Rivera Pacheco, Andres

447

Proposal Review Guidelines and Instruments: A Manual for External Review Panels.  

ERIC Educational Resources Information Center

Based on 3-year evaluation of Utah State Office of Education (USOE) programs funded and operated under Title IV of the Elementary and Secondary Education Act, this manual suggests steps and procedures for use by the USOE or other similar agencies responsible for soliciting and reviewing proposals for funding of educational programs. Steps include:…

Worthen, Blaine R.

448

A SUSTENTABILIDADE DAS RESERVAS EXTRATIVISTAS PELA PERSPECTIVA DA ECONOMIA ECOLÓGICA  

Microsoft Academic Search

As Reservas Extrativistas (RESEX) são áreas de domínio público, com uso concedido às populações extrativistas tradicionais, cuja subsistência baseia-se no extrativismo e na agricultura de subsistência e na criação de animais de pequeno porte, e têm como objetivos básicos proteger os meios de vida e a cultura dessas populações, e assegurar o uso sustentável dos recursos naturais da unidade. Porém,

Francisco Carlos Da Silveira Cavalcanti; Raimundo Claudio Gomes Maciel; Joao Alfredo De Carvalho Mangabeira; Bastiaan Philip Reydon

2008-01-01

449

AVALIAÇÃO DAS DEMANDAS E OFERTAS HÍDRICAS NA BACIA DO RIO SÃO FRANCISCO USANDO MODELO DE REDE DE FLUXO  

Microsoft Academic Search

RESUMO: Estima-se, atualmente, que existam no Brasil cerca de três milhões de hectares irrigados e algo em torno de 355.000 hectares de área irrigada na bacia do rio São Francisco. Sendo a irrigação considerada um uso consuntivo, grande parte da água empregada fica indisponível para a produção de energia e demais usos. O abastecimento humano, a dessedentação animal e o

Alan Vaz Lopes; Marcos Airton de Sousa Freitas

450

A Study of Distance Learning Technology in Utah: A Statewide Overview.  

ERIC Educational Resources Information Center

This report was commissioned by the Utah State Office of Education (USOE) to provide USOE with information about the potential applications of distance learning technology in schools. The study includes: (1) a statewide assessment of instructional, staff development, and administrative needs which may be met by distance learning technology; and…

Chow, Stanley H. L.; And Others

451

Evaluation of the Field Test of Project Information Packages: Volume I--Viability of Packaging. Final Report.  

ERIC Educational Resources Information Center

The United States Office of Education (USOE) in 1973 commissioned the creation of Project Information Packages (PIPs) that could fulfill USOE's aims for a cost-effective mechanism for disseminating exemplary programs beyond their developers to school districts with less successful compensatory educational projects. Three volumes report the first…

Stearns, Marian S.

452

[State Oversight in Postsecondary Education and the Office of Education's Eligibility Process. Collected Remarks.  

ERIC Educational Resources Information Center

Perspectives on an American Institutes for Research (AIR) study of state oversight in postsecondary education, conducted for the U.S. Office of Education (USOE), are offered by researcher Steven M. Jung. In addition, a list of recommendations by the General Accounting Office concerning USOE's eligibility process and responses by John Proffitt, on…

Jung, Steven M.; Proffitt, John

453

The Federal Role in Funding Children's Television Programming. Volume 1: Final Report.  

ERIC Educational Resources Information Center

The United States Office of Education (USOE) policy in funding purposive television programing for children was investigated. Information and policy recommendations were gathered from existing sources in the general literature, USOE file materials, 10 single-topic commissioned papers, a 10-member advisory board, a Federal advisory group, and…

Mielke, Keith W.; And Others

454

Biopsia de ganglio linfático centinela  

Cancer.gov

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

455

32 CFR 253.6 - Procedures.  

Code of Federal Regulations, 2013 CFR

...MISCELLANEOUS ASSIGNMENT OF AMERICAN NATIONAL RED CROSS AND UNITED SERVICE ORGANIZATIONS...provide a statement to that effect to the Red Cross or the USO. If the DISCO is unable... (f) Whenever any DoD Component or the Red Cross or the USO receives...

2013-07-01

456

Uso simultâneo do método do polimorfismo confor- macional de fita simples e da citometria de fluxo no aumento da eficácia da detecção de anormalidades do gene e da proteína p53 na leucemia mielóide crônica* Simultaneous use of the single strand conformation polymorphism method and flow cytometry for increasing the detection efficacy of abnormalities in the gene and p53 protein in chronic myeloid leukemia  

Microsoft Academic Search

SUMMARY - C Coonntteexxtt:: The p53 protein play an important role in the control of the cell cycle and DNA repair. In patients with chro- nic myeloid leukemia (CML) mutation in this gene were found in up to 30%, especially among those in blast crisis. At present, the only widely available technology that reliable detects and defines all mutations is

Geraldo Barroso; Cavalcanti Júnior; Claudete Esteves Klumb; Marcos Antonio; Mauricio Scheiner; Flavia da Cunha Vasconcelos; Gabriela Vasconcelos de Andrade; Luize Otero de Carvalho

457

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

458

El juego entre el nacimiento y los 7 anos: Un manual para ludotecarias. Investigacion-accion sobre la Familia y la Primera Infancia. UNESCO Sector de Educacion Monografia (Play between Birth and 7 Years: A Manual for Preschool Teachers. Action Research in Family and Early Childhood. UNESCO Education Sector Monograph).  

ERIC Educational Resources Information Center

The purpose of this Spanish-language manual is to help preschool teachers better understand theoretical concepts related to children's play. Following a preface that discusses UNESCO's activities related to early childhood education, the two main sections of the manual discuss children's play between 0-2 years and 2-7 years. Each section includes…

Grellet, Carolina

459

Executive Summary of The Use of Educational Software in Adult Literacy Programs: A Comparison of Integrated Learning Systems and Stand-Alone Software=Resume du Rapport Intitule: L'Utilisation de Didacticiels dans les Programmes d'Alphabetisation des Adultes: Une Comparaison Entre les Systemes Integres d'Apprentissage et les Logiciels Autonomes.  

ERIC Educational Resources Information Center

The pros and cons of integrated learning systems (ILS) and stand-alone software for adult literacy instruction were examined in a comparative analysis that focused on their use in adult literacy programs in Canada. The comparison focused on the following variables: achievement gains in reading; changes in students' attitudes toward computers;…

Millar, Diane

460

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

461

Relation Between Ocean Temperature and Ocean Level Change in the Tropical Atlantic and Precipitation in the Amazon Region of Northeast Brazil Relacoes Entre Temperatura DA Agua Do Mar E Divergencia AO Nivel Do Mar No Atlantico Tropical E Precipitacao NAS Regioes Amazonica E Nordeste Do Brasil.  

National Technical Information Service (NTIS)

The precipitation series for the rainy season over northeastern Brazil (Fortaleza and Quixeramobim) and the Amazon Region (manaus, Belem, Taperinha, Conceicao do Araguaia and Alto Tapajos) and a 48 station average of normalized departure of annual precipi...

M. T. Kagano

1982-01-01

462

Tensions entre rationalit? technique et int?r?ts politiques : l'exemple de la mise en oeuvre de la Loi sur les agences de développement de réseaux locaux de services de santé et de services sociaux au Qu?bec  

PubMed Central

Sommaire L’objet de cet article est constitué par les processus décisionnels entourant la mise en œuvre de la Loi sur les agences de développement de réseaux locaux de services de santé et de services sociaux (Loi 25). Nous entendons mettre en lumière les stratégies des groupes ou institutions de diverses natures qui ont fait valoir leurs préférences et ont tenté, avec un succès inégal, d’influencer les décisions relatives à cette réforme majeure de la structure du système de santé québécois. Au plan théorique, nous nous appuyons principalement sur les modèles d’analyse du lobbying qui, depuis les travaux fondateurs de Milbrath (1960, 1963), présentent cette pratique comme un processus fondamental d’échange d’information. Selon les données colligées dans les retranscriptions d’entrevues, les stratégies observées correspondent effectivement aux caractéristiques constitutives du lobbying et, dans quelques situations, à celles du patronage. La combinaison de ces divers éléments révèle que la mise en œuvre de la Loi 25 s’avère être avant tout un processus proprement politique. Ainsi, furent relégués au second plan les arguments techniques qui composaient initialement les objectifs de la Loi.

Contandriopoulos, D.; Hudon, Raymond; Martin, Elisabeth; Thompson, Daniel

2013-01-01

463

Comparison of colon-cleansing methods in preparation for colonoscopy - Comparative efficacy of solutions of mannitol, sodium picosulfate and monobasic and dibasic sodium phosphates 1 Estudo comparativo entre as soluções de manitol, picossulfato de sódio e fosfato monobásico e dibásico de sódio no preparo de cólon para colonoscopia  

Microsoft Academic Search

Purpose: Colonoscopy plays an essential role in the therapeutic and diagnostic approach in various colonic pathologies, the aim of the present study was to compare three solutions and their efficacy for the bowel preparation in adult patients submitted to elective colonoscopy . Methods: Sixty patients were randomly divided into three groups of 20 each. Each group was submitted to a

Paulo Miki; Ricardo Luiz; José Joaquim; Rocha V

464

Oil Price Changes and Real Exchange Rate Movements among Industrial Countries (Variations de prix du pétrole et mouvements du taux de change réel entre les pays industriels) (Las variaciones del precio del petróleo y las del tipo de cambio real de los países industriales)  

Microsoft Academic Search

The purpose of this paper is to analyze quantitatively, in a multicountry framework, the longer-run effects of the oil price increases of the 1970s on the external positions and real exchange rates of the seven major industrial countries. More specifically, the analysis focuses on the changes in countries' competitive positions in the goods market that would be required to eliminate

Anne K. McGuirk

1983-01-01

465

Efecto de la clorofilina sobre las frecuencias radio inducidas de intercambios entre cromatidas hermanas (ICH) y de otros eventos citogeneticos en celulas de la medula osea de raton In vivo. (Effect of chlorophyllin on frequency of radiation-induced of sister chromatid exchanges (SCE) and other cytogenetic events in mice bone marrow cells in vivo).  

National Technical Information Service (NTIS)

The effect of chlorophyllin on gamma radiation induced Sister chromatid exchanges (SCE) and on the mitotic index (IM) and average generation time was determined. Groups of mice were treated in one of the following regimens: (1) untreated, (2) treated with...

M. C. Garcia Rodriguez

1992-01-01

466

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

467

Efectos Especiales de Anclaje (Estudio sobre Regresiones de Juicios Condicionales). Parte 1: Distincion entre Efectos Aditivos y Efectos Multiplicativos en el Fenomeno de Anclaje (Special Effects of Anchoring (Study on Regression of Conditional Judgements) Part 1: Distinction Between Additive Effects and Multiplicative Effects in the Phenomenon of Anchoring). Publication No. 17.  

ERIC Educational Resources Information Center

A linear relationship was found between judgements given by 160 subjects to 7 objects presented as single stimuli (alpha judgements) and judgements given to the same objects presented with a condition (gamma judgements). This relationship holds for alpha judgements and the gamma judgements that belong to a family of constant stimulus and varying…

Lopez Alonso, A. O.

468

How To Talk to Your Doctor (and Get Your Doctor To Talk to You!). An Educational Workshop on Doctor Patient Communication = Como Hablarle a su Doctor (iY que su doctor le hable a usted!). Un seminario educativo sobre la comunicacion entre el doctor y el paciente.  

ERIC Educational Resources Information Center

This workshop, written in both English and Spanish, focuses on improving communication between physician and patient. In the workshop, the trainers will talk about "building bridges" between patient and doctor by understanding the doctor's role and his/her duty to the patient. According to the workshop, a person's doctor should communicate…

Baylor Coll. of Medicine, Houston, TX.

469

Shallow-water habitats as sources of fallback foods for hominins.  

PubMed

Underground storage organs (USOs) have been proposed as critical fallback foods for early hominins in savanna, but there has been little discussion as to which habitats would have been important sources of USOs. USOs consumed by hominins could have included both underwater and underground storage organs, i.e., from both aquatic and terrestrial habitats. Shallow aquatic habitats tend to offer high plant growth rates, high USO densities, and relatively continuous USO availability throughout the year. Baboons in the Okavango delta use aquatic USOs as a fallback food, and aquatic or semiaquatic USOs support high-density human populations in various parts of the world. As expected given fossilization requisites, the African early- to mid-Pleistocene shows an association of Homo and Paranthropus fossils with shallow-water and flooded habitats where high densities of plant-bearing USOs are likely to have occurred. Given that early hominins in the tropics lived in relatively dry habitats, while others occupied temperate latitudes, ripe, fleshy fruits of the type preferred by African apes would not normally have been available year round. We therefore suggest that water-associated USOs were likely to have been key fallback foods, and that dry-season access to aquatic habitats would have been an important predictor of hominin home range quality. This study differs from traditional savanna chimpanzee models of hominin origins by proposing that access to aquatic habitats was a necessary condition for adaptation to savanna habitats. It also raises the possibility that harvesting efficiency in shallow water promoted adaptations for habitual bipedality in early hominins. PMID:19890871

Wrangham, Richard; Cheney, Dorothy; Seyfarth, Robert; Sarmiento, Esteban

2009-12-01

470

Idea Bank: Lessons Learned From Test Writing  

NSDL National Science Digital Library

It is a passion for students' authentic engagement in science that influenced the author's decision to heed the Utah State Office of Education's (USOE) call for test writers at a professional workshop last summer. The workshop offered science teachers across the state of Utah the opportunity to craft test items used in Utah's state assessment, the Utah Criterion Referenced Tests. These test items capture the extent to which students are learning the Utah Core Curriculum (USOE 2003). He saw the USOE workshop as a chance to help shape items that would measure the kind of learning that is embedded in the lives of students and centers on inquiry experiences.

Campbell, Todd

2008-03-01

471

Entrenamiento con el traje espacial  

NASA Video Gallery

Después de 10 paseos espaciales, el astronauta de la NASA Michael López- Alegría sabe bastante de trajes espaciales. En este video, López Alegría comparte su experiencia acerca del uso y el entrena...

472

Tomografía computarizada (TC) y exploraciones para cáncer  

Cancer.gov

Hoja informativa que describe el procedimiento y la tecnología de exploraciones con tomografía computarizada así como sus usos para el diagnóstico, para exámenes de detección y para tratamiento del cáncer.

473

48 CFR 252.229-7005 - Tax exemptions (Spain).  

Code of Federal Regulations, 2010 CFR

...Empresas (Business Trade Tax). (7) Impuestos Especiales de Fabricacion (Special Products Tax). (8) Impuesto Sobre el Petroleo y Derivados (Tax on Petroleum and its By-Products). (9) Impuesto Sobre el Uso de Telefona (Telephone Tax)....

2009-10-01

474

48 CFR 252.229-7005 - Tax exemptions (Spain).  

Code of Federal Regulations, 2010 CFR

...Empresas (Business Trade Tax). (7) Impuestos Especiales de Fabricacion (Special Products Tax). (8) Impuesto Sobre el Petroleo y Derivados (Tax on Petroleum and its By-Products). (9) Impuesto Sobre el Uso de Telefona (Telephone Tax)....

2010-10-01

475

Estudio de Exámenes de Detección de Cáncer de Próstata, Pulmón, Colorrectal y Ovarios (PLCO): preguntas y respuestas  

Cancer.gov

El estudio de exámenes de detección PLCO es un estudio a gran escala, aleatorizado, para determinar si el uso de ciertos exámenes selectivos de detección disminuirá el riesgo de morir por esos cuatro tipos de cáncer.

476

32 CFR 253.3 - Definition.  

Code of Federal Regulations, 2013 CFR

...CONTINUED) MISCELLANEOUS ASSIGNMENT OF AMERICAN NATIONAL RED CROSS AND UNITED SERVICE ORGANIZATIONS, INC., EMPLOYEES TO...full-time, salaried individual serving with or employed by the Red Cross or the USO who is subject to assignment for overseas...

2013-07-01

477

32 CFR 253.2 - Applicability and scope.  

Code of Federal Regulations, 2013 CFR

...CONTINUED) MISCELLANEOUS ASSIGNMENT OF AMERICAN NATIONAL RED CROSS AND UNITED SERVICE ORGANIZATIONS, INC., EMPLOYEES TO...overseas locations for temporary or part-time employment with the Red Cross or the USO. Policy and procedures governing...

2013-07-01

478

32 CFR 253.5 - Responsibilities.  

Code of Federal Regulations, 2013 CFR

...CONTINUED) MISCELLANEOUS ASSIGNMENT OF AMERICAN NATIONAL RED CROSS AND UNITED SERVICE ORGANIZATIONS, INC., EMPLOYEES TO...the primary contact between the Department of Defense and the Red Cross and USO for all matters relating to the policy and...

2013-07-01

479

Landscape and vegetation change on the Iberian Peninsula during the Roman Epoch - A reconstruction based on Geo-Bioarchives  

NASA Astrophysics Data System (ADS)

Archaeological investigations expect that first strong landscape changes on the Iberian Peninsula based on Roman Occupation (Schattner 1998, Teichner 2007). Actual sedimentological investigations in flood plains, lagoons and estuaries do not reflect this development. They often show a decrease in sedimentation during this period (Thorndycraft & Benito 2006 a/b). In contrast analyses on sediments from roman dams (Hinderer et al. 2004, Solanas 2005) document massive erosion processes. The aim of this presented project is to reconstruct the effects of the roman land use system on vegetation and landscape development. Therefore different Geo-Bioarchives on several sites of Portugal and Spain - estuaries, palaeoriver channels and roman dams - are actually investigated with a high temporal resolution using palynological and sedimentological methods. First results show, that the anthropogenic impact starts clearly before roman time with an peak in human activity during Iron Age (Schneider et al. 2008). During the roman occupation phase different effects are visible. The inland areas document a massive increase in vegetation change, while the coastal areas were stronger developed before and show only slightly and very local changes in land use and vegetation. References Hinderer, M., Silva C. & J. Ries (2004). Erosion in zentralen Ebrobecken und Sedimentakkumulation in Talsperren. GeoLeipzig 2004, Geowissenschaften sichern Zukunft. - Schriftenreihe der Dt. Geol. Gesell. 34. Schattner, T.G. (1998): Archäologischer Wegweiser durch Portugal.- Kulturgeschichte der antiken Welt 74. Mainz. Schneider, H., Höfer, D., Trog, C., Daut, G., Hilbich C. & R. Mäusbacher (2008): Geoarcheological reconstruction of lagoon development in the Algarve Region (South Portugal). Terra Nostra 2008/2, Abstract Volume 12th IPC: 248. Solanas, O.L.-P. (2005): El Aterramiento del embalse romano de Muel: Implicaciones para la evolución de la erosióy el uso de los recursos hidricos en el valle del Huerva. Postgrado en Ingeneria de los Recursos Hidricos, Zaragoza. Teichner, F. (2007): Zwischen Land und Meer - Entre tierra y mar. Studien zur Architektur und Wirtschaftsweise ländlicher Siedlungen im Süden der römischen Provinz Lusitanien. - Stvdia Lvsitana 3 (MNAR) / Madrider Beitr. (DAI). Thorndycraft, V.R. & G. Benito (2006a): Late Holocene fluvial chronology of Spain: The role of climatic variability and human impact. - Catena 66 (1-2): 34-41. Thorndycraft, V.R. & G. Benito (2006b): The Holocene fluvial chronology of Spain: evidence from a newly compiled radiocarbon database. - Quaternary Science Reviews 25 (3-4): 223-234.

Schneider, Heike

2010-05-01

480

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

481

Inventario mundial de la calidad del carbon mineral (WoCQI) [The world coal quality inventory (WoCQI)  

USGS Publications Warehouse

Los oficiales encargados de la politica comercial de cada pais requieren informacion clara y precisa sobre el recurso del carbon mineral, particularmente sobre sus propiedades y caracteristicas, para tomar decisiones bien fundamentadas con respecto al mejor uso de los recursos naturales, necesidades de importacion y oportunidades de exportacion, objetivos de politica interna y externa, oportunidades de transferencia tecnologica, posibilidades de inversion externa, estudios ambientales y de salud, y asuntos relacionados con el uso de productos secundarios y su disposicion.

Finkelman, R. B.; Lovern, V. S.

2001-01-01

482

The Role of University Spinout Companies in an Emerging Technology: The Case of Nanotechnology  

Microsoft Academic Search

This study examines the role of university spin-out (USO) companies in the emergence of a new technology, in our case nanotechnology.\\u000a Three unique data-sets based on patents, co-publications, and firm data pertaining to the unfolding field of nanotechnology\\u000a in the UK were developed. Subsequent analysis suggests that USOs play an important though not a dominant role. Furthermore,\\u000a the results indicate

Dirk Libaers; Martin Meyer; Aldo Geuna

2006-01-01

483

Tone based command system for reception of very weak signals  

NASA Technical Reports Server (NTRS)

This disclosure presents a communication receiver system for spacecraft that includes an open loop receiver adapted to receive a communication signal. An ultrastable oscillator (USO) and a tone detector are connected to the open loop receiver. The open loop receiver translates the communication signal to an intermediate frequency signal using a highly stable reference frequency from the USO. The tone detector extracts commands from the communication signal by evaluating the difference between tones of the communication signal.

Bokulic, Robert Steven (Inventor); Jensen, James Robert (Inventor)

2006-01-01

484

Effects of positive and negative delusional ideation on memory.  

PubMed

We investigated the relationship between levels of delusional ideation (whether positive or negative delusions) and the activation and distortion of memory by using pairs of positive and negative adjectives describing personality traits where those adjectives had similar meanings. We presented one of each pair of adjectives in the learning phase. Immediately after the learning phase in Experiment 1, we asked whether each adjective had been presented. Participants with high (positive or negative) delusional ideation were more likely to indicate that they had learned adjectives that they had not actually learned. This finding suggested that non-learned positive (or negative) adjectives that were associated with learned negative (or positive) adjectives were more likely to be activated in participants prone to positive (or negative) delusional ideation. However, in Experiment 2, two forced-choice tests were conducted immediately after the learning phase. In this context, participants, regardless of their proneness to delusional ideation, could almost always correctly distinguish what had and had not been presented, suggesting that the activation of learned items was still stronger than that for non-learned items in the immediate test. As time passed, the proportion of false alarms for positive or negative adjectives was higher in the two forced-choice tests among those with high proneness to (positive or negative) delusional ideation, suggesting that participants with delusional ideation were increasingly likely to depend on internal conditions for retrieval over time. Nous avons examiné la relation entre les niveaux d'idéation illusoire (qu'elle soit positive ou négative) et l'activation et la distorsion de la mémoire, en utilisant des paires d'adjectifs positifs et négatifs à significations similaires décrivant des traits de personnalité. Nous avons présenté un membre de chaque paire d'adjectifs lors d'une phase d'apprentissage. Dans une première expérience, immédiatement après la phase d'apprentissage, nous avons demandé si chaque adjectif avait été présenté. Les participants ayant un niveau d'idéation illusoire (positive ou négative) élevé étaient plus susceptibles d'indiquer qu'ils avaient appris les adjectifs qu'ils n'avaient pas appris. Ce résultat suggérait que les adjectifs positifs (ou négatifs) non appris qui étaient associés à des adjectifs négatifs (ou positifs) appris étaient plus susceptibles d'être activés chez les participants portés à l'idéation illusoire positive (ou négative). Dans une deuxième expérience, deux tests à choix forcés ont été menés immédiatement après la phase d'apprentissage. Dans ce contexte, les participants, indépendamment de leur tendance à l'idéation illusoire, pouvaient presque toujours distinguer correctement ce qui avait été présenté de ce qui n'avait pas été présenté, suggérant que l'activation des items appris était encore plus forte que celle des items non appris dans le test immédiat. Avec le temps, la proportion de fausses alarmes pour les adjectifs positifs ou négatifs était plus élevée dans les deux tests à choix forcés chez les participants portés à l'idéation illusoire (positive ou négative), ce qui suggère que les participants avec idéation illusoire étaient de plus en plus susceptibles de dépendre de leurs conditions internes lors du rappel à mesure que le temps passait. En este estudio se investigó la relación entre los niveles de ideación delusional (tanto delusiones positivas como negativas) y la activación y distorsión de la memoria a través del uso de pares de adjetivos positivos y negativos que describen rasgos de personalidad. Estos pares de adjetivos tenían significados similares. En la fase de aprendizaje se presentó un miembro de cada par de adjetivos. Inmediatamente después de la fase de aprendizaje se realizó el primer experimento, en el cual se preguntó al participanten si es que se le habían presentado cada uno de los adjetivos. Los participantes con elevada ideación de

Sugimori, Eriko; Tanno, Yoshihiko

2010-04-01

485

Como Lo Hago Yo: Mielomeningocele En Bolivia  

PubMed Central

Introducción: Las malformaciones del tubo neural (MTN) representan la segunda causa más frecuente de anomalías congénitas, luego de las cardiopatías. En este grupo se destaca el mielomeningocele (MMC) por su mayor incidencia, y por ser la más incapacitante y la más compleja entre todas las demás malformaciones del sistema nervioso c`entral (SNC). En Bolivia, como en muchos países de Sudamérica, los bajos niveles socio-culturales y la debilidad en el sistema sanitario, hacen que su incidencia y su morbilidad, sean mayores que en las naciones más desarrolladas. Material y Métodos: Se realizó un estudio retrospectivo y descriptivo de 70 casos de MMC, atendidos por un equipo multidisciplinario en el Hospital Universitario Japonés (HUJ) de Santa Cruz de la Sierra, entre 2008-2011. De ellos, 60 fueron intervenidos quirúrgicamente. Resultados: Se realizaron controles prenatales sólo en 27 mujeres (38.6%), diagnosticándose una disrafia espinal en apenas dos casos (7.4%). La edad de ingreso del MMC en su mayoría fue después de las 24 horas (65.6%), predominando su localización en la región lumbosacra (64.3%). De ellos, 67.2% eran abiertos, presentando un 32.9% un daño neurológico motor parcial mientras que 47.1% tenían paraplejia por debajo de la lesión. De los 70 casos, tres (4.3%) no fueron intervenidos, por presentar defectos congénitos severos o estado general grave. Las principales complicaciones posoperatorias inmediatas fueron: dehiscencia de sutura y/o infección de la herida (16.6%), fístula de líquido cefalorraquídeo (LCR) (10%) e infección del SNC (11.7%). La mortalidad general y postoperatoria fue de 7.1% y 3.3%, respectivamente. Al mes de vida presentaban hidrocefalia un 80% de los pacientes operados, colocándose una derivación ventriculoperitoneal (DVP) de presión media. De 9 pacientes que tuvieron un acompanamiento de dos o más años, seis presentaron una médula anclada, que fueron intervenidas quirúrgicamente. Conclusión: En esta serie, el diagnóstico prenatal del MMC fue ocasional y la derivación al HUJ de los recién nacidos con esta malformación fue generalmente tardía. No hubo predominio de género y la mayoría de los casos presentaron sus lesiones en la región lumbar y lumbosacra. La mortalidad general y postoperatoria fue similar a la reportada en la literatura. Pocos enfermos realizaron controles posteriores al alta hospitalaria. Igual que otros países de Sudamérica, las falencias en el sistema público de salud y el nivel sociocultural, son factores determinantes para un mal pronóstico en estos niños. Por sus múltiples complicaciones, el MMC requiere de una especial atención gubernamental, sobre todo de carácter preventivo mediante el uso de ácido fólico en mujeres fértiles, como también de un equipo profesional multidisciplinario, a fin de realizar un tratamiento adecuado y oportuno. Al mismo tiempo, trabajos multicéntricos en hospitales de América Latina, ayudarán al mejor manejo de estos pacientes.

Dabdoub, Carlos F.; Dabdoub, Carlos B.; Villavicencio, Ramiro; Quevedo, German

2014-01-01

486

Groundwater demand management at local scale in rural areas of India: a strategy to ensure water well sustainability based on aquifer diffusivity and community participation  

NASA Astrophysics Data System (ADS)

Watershed development programmes provide an opportunity for sustainable management strategies, although currently, they remain largely `supply-side' mechanisms of water resources development. Hydrogeological conditions, community participation and status of groundwater usage are important in evolving strategies on `demand-side' groundwater management. Neemkheda aquifer is a typical low-storage, low-hydraulic conductivity aquifer from a watershed in the dryland regions of Madhya Pradesh State of central India. A shallow unconfined aquifer, it consists of an upper coarse, calcareous sandstone unit underlain by a fine-grained sandstone unit. A `well commune' of seven wells is poised to test the concept of joint groundwater management, wherein wells are mechanisms of tapping a common water source, the Neemkheda aquifer. The strategy for systematic groundwater management in the Neemkheda well commune is based upon the relationship between Transmissivity (T) and Storage coefficient (S), i.e. aquifer diffusivity, and its variation within the aquifer. Wells within a high diffusivity domain tend to dewater more quickly than wells within a low diffusivity domain. A well-use schedule during the dry season, based upon aquifer diffusivity forms the basis of the groundwater management concept. The distribution of local aquifer diffusivities governs the relationship between local and regional aquifer depletion times and forms the basis of the groundwater management exercise being proposed for the Neemkheda aquifer. Los programas de desarrollo de una cuenca hídrica son una oportunidad para el uso de estrategias de gestión sostenible, aunque hoy en día estas siguen siendo principalmente mecanismos para el desarrollo de recursos hídricos con énfasis en la ``oferta''. Las condiciones hidrogeológicas, la participación comunitaria y la condición de utilización del agua subterránea, son importantes en el desarrollo de estrategias para la gestión del agua subterránea, desde el punto de vista de la ``demanda''. El acuífero de Neemkheda es un acuífero típico de almacenamiento bajo y conductividad hidráulica baja, perteneciente a una cuenca hídrica ubicada en las regiones secas del Estado de Madhya Pradesh, en la parte central de India. Un acuífero de tipo libre, somero, formado por una unidad superior de arenisca calcárea de grano grueso, subyacida por una unidad de arenisca de grano fino. Un campo de pozos comunitario compuesto por siete pozos, pone a prueba el concepto de gestión conjunta del agua subterránea, dentro del cual los pozos son mecanismos para usar una fuente de agua común: El acuífero de Neemkheda. La estrategia usada para la gestión sistemática del agua subterránea, en el campo de pozos comunitario de Neemkheda, se basa en la relación existente entre Transmisividad (T) y Coeficiente de Almacenamiento (S), es decir en la Difusividad del Acuífero y en su variación observada dentro del mismo acuífero. Los pozos cuya difusividad esta dentro de un rango alto, tienden a experimentar un descenso en su nivel mas rápidamente que aquellos pozos con una difusividad baja. El concepto de gestión de agua subterránea se basa en un programa especial de operación para cada pozo durante la estación seca, el cual a su vez se basa en la difusividad del acuífero. La distribución de difusividades locales del acuífero rige las relaciones entre las épocas de descensos de nivel en el acuífero a escala regional y local, y además constituyen la base del ejercicio de la gestión del agua subterránea que se esta proponiendo para el acuífero de Neemkheda. Les programmes de développement des bassins versants offrent une occasion de développer des stratégies pour une gestion durable, bien qu' à présent elles restent en grande mesure `le terme source' dans le mécanisme de développement de la ressource en eau. Les conditions hydrogéologiques, la participation de la communauté et l'usage des eaux souterraines sont importants pour le `terme demande' dans les stratégies de gestion des eaux souterraines. L'aquifèr

Kulkarni, Himanshu; Vijay Shankar, P. S.; Deolankar, S. B.; Shah, Mihir

487

Spatial characteristics of groundwater temperature in the Ishikari Lowland, Hokkaido, northern Japan: analytical and numerical applications  

NASA Astrophysics Data System (ADS)

In porous sediments of the Ishikari Lowland, there is a gradual increase in the background geothermal gradient from the Ishikari River (3-4 °C 100 m-1) to the southwest highland area (10 °C 100 m-1). However, the geothermal gradient at shallow depths differs in detail from the background distribution. In spite of convective heat-flow loss generally associated with groundwater flow, heat flow remains high (100 mW m-2) in the recharge area in the southwestern part of the Ishikari basin, which is part of an active geothermal field. In the northeastern part of the lowland, heat flow locally reaches 140 mW m-2, probably due to upward water flow from the deep geothermal field. Between the two areas the heat flow is much lower. To examine the role of hydraulic flow in the distortion of the isotherms in this area, thermal gradient vs. temperature analyses were made, and they helped to define the major components of the groundwater-flow system of the region. Two-dimensional simulation modeling aided in understanding not only the cause of horizontal heat-flow variations in this field but also the contrast between thermal properties of shallow and deep groundwater reservoirs. Résumé. Dans les sédiments poreux des basses terres d'Ishikari, on observe une augmentation graduelle du gradient géothermal général depuis la rivière Ishikari (3-4 °C 100 m-1) vers la zone élevée située au sud-ouest (10 °C 100 m-1). Toutefois, le gradient géothermal aux faibles profondeurs diffère dans le détail de la distribution générale. Malgré la perte de flux de chaleur par convection, généralement associée aux écoulements souterrains, le flux de chaleur reste élevé (100 mW m-2) dans la zone de recharge de la partie sud-ouest du bassin de l'Ishikari, qui appartient à un champ géothermal actif. Dans la partie nord-est des basses terres, le flux de chaleur atteint localement 140 mW m-2, probablement à cause d'un écoulement souterrain ascendant depuis le champ géothermal profond. Entre les deux zones, le flux de chaleur est beaucoup plus faible. Afin de déterminer le rôle du flux d'eau souterraine dans la distorsion des isothermes dans cette zone, des analyses du gradient thermal en fonction de la température ont été réalisées elles ont permis de définir les composantes majeures du système aquifère régional. Une modélisation deux-dimensionnelle pour la simulation a ensuite contribué à la compréhension non seulement de la cause des variations horizontales du flux de chaleur dans cette région, mais également du contraste entre les propriétés des réservoirs superficiel et profond. Resumen. En los sedimentos porosos de las tierras bajas de Ishikari, hay un incremento gradual en el gradiente geotérmico desde el río Ishikari (3-4 °C 100 m-1) hacia la zona elevada del sudoeste (10 °C 100 m-1). Sin embargo, el gradiente geotérmico a profundidades someras difiere de la distribución de fondo. A pesar de las pérdidas por el flujo convectivo de calor asociadas generalmente al flujo de aguas subterráneas, el flujo de calor permanece elevado (100 mW m-2) en el área de recarga, hacia el sudoeste de la cuenca del Ishikari, la cual pertenece a un campo geotérmico activo. Al nordeste de las tierras bajas, el flujo de calor alcanza 140 mW m-2, probablemente por el flujo ascendente de agua procedente del campo geotérmico profundo. Entre ambas áreas, el flujo de calor es mucho menor. Para examinar el papel del flujo hidráulico en la distorsión de las isotermas de esta región, se ha comparado el gradiente térmico con la temperatura, con lo cual se ha podido definir los componentes mayoritarios del sistema de flujo de las aguas subterráneas. El uso de modelos bidimensionales ha servido para comprender no sólo del origen de las variaciones horizontales del flujo de calor en este campo, sino también el contraste entre las propiedades térmicas de los reservorios someros y profundos de aguas subterráneas.

Dim, J. R.; Sakura, Y.; Fukami, H.; Miyakoshi, A.

2002-03-01

488

Spécificités des grandes villes de province  

Microsoft Academic Search

[spa] Especificidades de las grandes ciudades de provincias . El cruce entre la actividad econômica y la cualificaciôn individual (funciôn) permite describir el empleo ofrecido por las areas urbanas con toda la precision deseable : se toman en cuenta, entre otras, las interferencias entre sectores secundario y terciario (empleos terciarios de la industria). Doce de dichas funciones, llamadas funciones estratégicas,

Philippe Julien

1996-01-01

489

El cáncer de pulmón y los hispanos: esta es la realidad  

Cancer.gov

Primero, las buenas noticias: el número de casos de cáncer de pulmón diagnosticados entre hispanos es cerca de la mitad del número de casos diagnosticados entre blancos no hispanos en Estados Unidos. Y, del 2000 al 2009, el número de casos entre hombres hispanos disminuyó a un ritmo más acelerado que entre hombres blancos no hispanos y se mantuvo estable entre mujeres hispanas. La razón principal de estas buenas noticias es que los hispanos, en general, tienen menos probabilidad de fumar y tienen menos probabilidad de ser fumadores diarios de cigarrillos en comparación con muchos otros segmentos de la población estadounidense.

490

COBE navigation with one-way return-link Doppler in the post-helium-venting phase  

NASA Technical Reports Server (NTRS)

The results of a navigation experiment with one way return link Doppler tracking measurements for operational orbit determination of the Cosmic Background Explorer (COBE) spacecraft are presented. The frequency of the tracking signal for the one way measurements was stabilized with an Ultrastable Oscillator (USO), and the signal was relayed by the Tracking and Data Relay Satellite System (TDRSS). The study achieved three objectives: space qualification of TDRSS noncoherent one way return link Doppler tracking; determination of flight performance of the USO coupled to the second generation TDRSS compatible user transponder; and verification of algorithms for navigation using actual one way tracking data. Orbit determination and the inflight USO performance evaluation results are presented.

Dunham, Joan; Nemesure, M.; Samii, M. V.; Maher, M.; Teles, Jerome; Jackson, J.

1991-01-01

491

Sensitivity of Magnetospheric Multi-Scale (MMS) Mission Navigation Accuracy to Major Error Sources  

NASA Technical Reports Server (NTRS)

The Magnetospheric Multiscale (MMS) mission consists of four satellites flying in formation in highly elliptical orbits about the Earth, with a primary objective of studying magnetic reconnection. The baseline navigation concept is independent estimation of each spacecraft state using GPS pseudorange measurements referenced to an Ultra Stable Oscillator (USO) with accelerometer measurements included during maneuvers. MMS state estimation is performed onboard each spacecraft using the Goddard Enhanced Onboard Navigation System (GEONS), which is embedded in the Navigator GPS receiver. This paper describes the sensitivity of MMS navigation performance to two major error sources: USO clock errors and thrust acceleration knowledge errors.

Olson, Corwin; Long, Anne; Car[emter. Russell

2011-01-01

492

Arsenic contamination of groundwater: Mitigation strategies and policies  

NASA Astrophysics Data System (ADS)

Contamination of groundwater by arsenic from natural geochemical sources is at present a most serious challenge in the planning of large-scale use of groundwater for drinking and other purposes. Recent improvements in detection limits of analytical instruments are allowing the correlation of health impacts such as cancer with large concentrations of arsenic in groundwater. However, there are at present no known large-scale technological solutions for the millions of people-mostly rural-who are potentially affected in developing countries. An overall framework of combating natural resource degradation is combined with case studies from Chile, Mexico, Bangladesh and elsewhere to arrive at a set of strategic recommendations for the global, national and local dimensions of the arsenic ``crisis''. The main recommendations include: the need for flexibility in the elaboration of any arsenic mitigation strategy, the improvement and large-scale use of low-cost and participatory groundwater quality testing techniques, the need to maintain consistent use of key lessons learned worldwide in water supply and sanitation and to integrate arsenic as just one other factor in providing a sustainable water supply, and the following of distinct but communicable tracks between arsenic-related developments and enhanced, long-term, sustainable water supplies. La contamination des eaux souterraines par l'arsenic provenant de sources naturelles est actuellement un sujet des plus graves dans l'organisation d'un recours à grande échelle des eaux souterraines pour la boisson et d'autres usages. De récentes améliorations dans les limites de détection des équipements analytiques permettent de corréler les effets sur la santé tels que le cancer à de fortes concentrations en arsenic dans les eaux souterraines. Toutefois, il n'existe pas actuellement de solutions technologiques à grande échelle connues pour des millions de personnes, surtout en zones rurales, qui sont potentiellement affectées dans les pays en développement. Un cadre d'ensemble pour lutter contre la dégradation naturelle des ressources est associé à des études de cas au Chili, au Mexique, au Bangladesh et ailleurs afin d'établir un ensemble de recommandations stratégiques pour les dimensions globale, nationale et locale de la «crise» de l'arsenic. Les principales recommandations sont les suivantes: le besoin d'une flexibilité pour élaborer une stratégie de diminution de l'arsenic, l'amélioration et l'utilisation à grande échelle de techniques peu coûteuses et associant les populations pour tester la qualité de l'eau souterraine, le besoin de maintenir un usage logique des leçons clés acquises de par le monde pour l'alimentation en eau et la santé publique, celui d'intégrer l'arsenic simplement comme un autre facteur pour assurer une alimentation durable en eau, et pour suivre des pistes distinctes mais communicables entre les développements liés à l'arsenic et les alimentations durables en eau mises en valeurs à long terme. La contaminación de las aguas subterráneas con arsénico procedente de fuentes geoquímicas naturales es actualmente uno de los retos principales de la planificación a gran escala de las aguas subterráneas para uso de boca y otros fines. Las recientes mejoras en los límites de detección del instrumental analítico permiten correlacionar impactos en la salud tales como el cáncer con concentraciones elevadas de arsénico en las aguas subterráneas. Sin embargo, a fecha de hoy no existen soluciones tecnológicas de gran escala para millones de personas-población principalmente rural-que están potencialmente afectadas en los países en vías de desarrollo. Se combina un enfoque general para combatir la degradación de los recursos naturales con estudios concretos de Chile, México, Bangladesh y cualquier otro lugar que permita obtener un conjunto de recomendaciones estratégicas para las dimensiones global, nacional y local de la ``crisis'' del arsénico. Las recomendaciones principales incluyen la necesidad de flexibilizar l

Alaerts, Guy J.; Khouri, Nadim

494

Health Educators Eye New Legislation, Plan Goals for the Future  

ERIC Educational Resources Information Center

Health educators were reminded at the American Vocational Association (AVA) in Houston that the health of their programs depends in part on their participation in interpreting the Education Amendments of 1976. Juliette Lester, who is chairing the Regulations Task Force in USOE's Bureau of Occupational and Adult Education said she can see many…

American Vocational Journal, 1977

1977-01-01

495

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

496

El comercio de los productos transgénicos: el estado del debate internacional  

Microsoft Academic Search

Los productos transgénicos mezclan aspectos contradictorios. La manipulación genética de cultivos permite desarrollar tanto productos con toxinas insecticidas, disminuyendo el uso de defensivos agrícolas que pueden dañar el medio ambiente, como alimentos con propiedades vitamínicas y proteicas, que pueden mejorar los indicadores sociales en los países en desa- rrollo. Por otra parte, se han abierto interrogantes acerca de los posibles

María Angélica Larach; División de Comercio Internacional

497

EVALUACIÓN DE ALGUNAS MODIFICACIONES A LOS MÉTODOS DE EXTRACCIÓN DE QUISTES EN UN SUELO FRANCO-ARCILLOSO INFESTADO CON Globodera pallida (Stone 1973)  

Microsoft Academic Search

RESUMEN En enero del 2005, el laboratorio de nematología de la Universidad de Costa Rica diagnosticó la presencia de Globodera pallida en un cultivo de papa, ubicado en la zona Norte de Cartago. Esta plaga estaba ausente en Costa Rica, por lo tanto es necesario del uso de metodologías más rápidas y certeras, que le brinden al agricultor un diagnóstico

Danny Humphreys Pereira

498

I-121 - CINÉTICA QUÍMICA E FUNDAMENTOS DOS PROCESSOS DE NITRIFICAÇÃO E DENITRIFICAÇÃO BIOLÓGICA  

Microsoft Academic Search

RESUMO A demanda crescente dos usos das águas naturais tem gerado necessidades crescentes de processos efetivos no tratamentos de efluentes líquidos, e estratégias de gerenciamento dos recursos naturais. As tecnologias disponíveis para o controle do nitrogênio em efluentes industriais e domésticos têm se tornado uma poderosa ferramenta tanto para a correta disposição de efluentes, como para o gerenciamento das águas.

Eduardo S. Ferreira

499

A Study of Late Funding of Elementary and Secondary Education Programs. Final Report.  

ERIC Educational Resources Information Center

This publication presents findings of a nationwide study of the impact of late or uncertain funding on elementary secondary educational programs funded by the U.S. Office of Education (USOE). Emphasis of the report is on detailed documentation of the problems created by current funding flow patterns to state and local education agencies. In phase…

Peat, Marwick, Mitchell and Co., Washington, DC.

500

Investigaciones de Economía de la Educación 5  

Microsoft Academic Search

Para mantener una economía productiva, competitiva y sostenible es necesario el aumento del nivel de competencia de los trabajadores y la adaptación a los cambios sociales y laborales en que nos encontramos inmersos. Es indudable que el uso de las nuevas tecnologías (TIC) es el factor que más ha influido en una nueva cultura de la formación, a la vez

Carlos Gil Santiago; Jesús Mandingorra Giménez; Salvador Pellicer Farreri; Victor M. Benet Anchel