999 resultados para 76-534
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The anisotropy of the azimuthal distributions of charged particles produced in √sNN=2.76 TeV PbPb collisions is studied with the CMS experiment at the LHC. The elliptic anisotropy parameter, v2, defined as the second coefficient in a Fourier expansion of the particle invariant yields, is extracted using the event-plane method, two- and four-particle cumulants, and Lee-Yang zeros. The anisotropy is presented as a function of transverse momentum (pT), pseudorapidity (η) over a broad kinematic range, 0.3
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First measurements of the azimuthal anisotropy of neutral pions produced in Pb-Pb collisions at a center-of-mass energy of √sNN=2.76 TeV are presented. The amplitudes of the second Fourier component (v2) of the π0 azimuthal distributions are extracted using an event-plane technique. The values of v2 are studied as a function of the neutral pion transverse momentum (pT) for different classes of collision centrality in the kinematic range 1.6
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A clinical epidemiological study was conducted among 34 rural properties located within the Brazilian Pantanal region and nearby areas between 2007 and 2010. The diagnosis of equine pythiosis was based on antibody detection (by enzyme-linked immunosorbent assay), polymerase chain reaction, histopathological analysis, and cultures positive for Pythium insidiosum. The majority of the affected animals (85%) were in the Pantanal biome, which had a higher disease prevalence (0.9%-66.7%) than that of the Cerrado (2.7%-33.3%). The disease was more prevalent in the rainy season (January-March), with an abrupt fall in the number of cases during the drought period (April-September; correlation of R 2 = 0.77; P < .01). Generally, the average prevalence of equine pythiosis in both regions was 5%, with mortality and lethality rates of 1.3% and 23.1%, respectively, in the Pantanal and 2.3% and 45.5%, respectively, in the Cerrado. However, the treatment with immunotherapy may have underestimated these numbers, especially in the Pantanal. Animals older than 1 year were 8.09 times more affected by the disease than younger animals in the same environment (P < .05). A correlation between the anatomical area of the lesion and the type of skin color was also observed. Approximately 73% of the lesions were found in dark-pigmented areas, and animals with a dark coat color were affected more frequently. These findings highlight the importance of hematophagous insects in the epidemiology of pythiosis because these areas are preferred for blood feeding. © 2013 Elsevier Inc. All rights reserved.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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El número 76 de la revista Notas de Población se inicia con el artículo de Gonçalves, Rodríguez Wong, Oya y Magno de Carvalho, que tiene como propósito mostrar en detalle la aplicación del método de proyección multirregional, para lo cual se proyecta, simultáneamente, la población por edad y sexo de las unidades federativas de Brasil para el período 2000-2020. Posteriormente, Paulo de Martino Jannuzzi, presenta un método alternativo para estimar la población económicamente activa futura, que difiere de otros métodos convencionales de proyección ya que permite incorporar explícitamente los efectos coyunturales y estructurales del mercado del trabajo sobre las tasas de actividad masculina y femenina. El artículo de Kenneth Hill analiza el desempeño de diversos métodos de medición de la mortalidad adulta aplicados a un solo país: Guatemala. Se incluyen métodos que estiman la cobertura del registro de defunción o de los decesos notificados mediante el censo, métodos de supervivencia intercensal que utilizan datos de censos sucesivos, métodos basados en la sobrevivencia de los hijos y un conjunto de métodos de sobrevivencia de los padres. Por otra parte, el estudio de Merino y Pullum analiza la forma en que los consultorios de planificación de la familia y el contexto social influyen en las decisiones relativas al uso de anticonceptivos. Para estimar los efectos contextuales en la elección de anticonceptivos que efectúan las mujeres que viven en la segunda región más grande de Chile, se utilizó un modelo estadístico de multiniveles. Por último, Ralfo Matos analiza la inserción ocupacional de los migrantes y los no migrantes, en zonas que forman parte de la red urbana de Brasil, a partir de datos empíricos obtenidos de los censos demográficos.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)