Narrow Gap
Mostrando 1-12 de 38 artigos, teses e dissertações.
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1. Cultura política, desempenho escolar e a Educação em Ciências: um estudo empírico à luz de Pierre Bourdieu
Resumo: Discussões sobre política e economia não estão presentes nas aulas de Ciências do Ensino Médio, restringindo-se em geral ao contexto das disciplinas das Ciências Humanas. Isso gera, por vezes, um desinteresse e uma alienação dos jovens sobre temas políticos, econômicos e sociais. Neste trabalho pretendemos chamar a atenção para a falta d
Ciênc. educ. (Bauru). Publicado em: 01/07/2019
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2. Avaliação da expressão e localização da conexina 43 na injúria isquêmica renal aguda / Evaluation of Connexin 43 expression and localization in renal acute ischemic injury
The cells require contact with other cells and the extracellular matrix for tissue formation. Gap junctions are narrow channels connecting the cytoplasm of two adjacent cells, promoting the passage of inorganic ions, amino acids, nucleotides and other metabolites. These junctions are composed of two conexons or hemichannels, crossing the cell plasma membrane
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2011
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3. Child malnutrition in the municipal district of Jordão, Acre State, Brazilian Amazonia / Desnutrição infantil em Jordão, Estado do Acre, Amazônia Ocidental Brasileira
Despite the improvements in child nutrition in developing countries over recent decades, child malnutrition remains a serious public health issue in Brazil, particularly within Amazonia. Nutritional surveys on Amazonian populations are scarce and generally involve indigenous populations settled in reserves. Aim - To ascertain the prevalence and factors assoc
Publicado em: 2010
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4. Phase diagram of quark matter in nonlocal chiral models under color and electric charge neutrality conditions
We consider the phase diagram of two-flavor quark matter under neutron star constraints for the case of two nonlocal, covariant quark models within the mean field approximation. In one of these models (Model I) the nonlocality arises from the regularization procedure, motivated by the instanton liquid model, whereas in the second one (Model II) a separable a
Brazilian Journal of Physics. Publicado em: 2007-07
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5. Propriedades Magneto-Ópticas do Pb(x)Eu(1-X)Te COM 0 ≤ x ≤ 0.2 / MAGNETO-OPTICAL PROPERTIES OF Pb(x)Eu(1-X)Te WITH 0 ≤ x ≤ 0.2
The optical properties of epitaxial samples of PbxEu1-xTe with 0 ≤ x ≤ 0.2 have been investigated by photoluminescence measurements at various temperatures and magnetic fields and through transmittance and reflectance measurements at room temperature. The samples were grown by molecular beam epitaxy in a Riber 32p MBE system at LAS-INPE o
Publicado em: 2007
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6. Drosophilidae (insecta, diptera) do cerrado : relações faunísticas, distribuição geográfica e vulnerabilidade das espécies
The insects of the family Drosophilidae (Insecta, Diptera) are excellent biological models, and they were intensively studied in several disciplines. The study of these flies in Brazil began in the 19th century, and had a great advance from 1940s. Nevertheless, there is still a big gap on the ecology of these animals. The Cerrado (Brazilian savanna) is the s
Publicado em: 2007
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7. Surface morphology analysis of GaInAsSb films grown by liquid phase epitaxy
We studied growth mechanisms in semiconducting Ga1 - xIn xAs ySb1 - y films grown by liquid phase epitaxy on (100) GaSb:Te (10(17) cm- 3) substrates at 600 ºC solution-substrate temperature. Atomic Force Microscopy (AFM) images of these films show step-like corrugations, undulations, grooves, and terraces. The terraces are a few nm in height and hundreds of
Brazilian Journal of Physics. Publicado em: 2006-09
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8. Spin relaxation and g-factor manipulation in quantum dots
Phonon-induced spin relaxation rates and electron g-factor tuning of quantum dots are studied as function of in-plane and perpendicular magnetic fields for different dot sizes. We consider Rashba and Dresselhaus spin-orbit mixing in wide and narrow-gap semiconductors, and show how Zeeman sublevels can relax via piezoelectric (GaAs) and deformation (InSb) pot
Brazilian Journal of Physics. Publicado em: 2006-06
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9. Modelagem de mancais hidrodinamicos com movimento oscialatorio / Model for hydrodynamic bearings with oscillating motion
In this work was developed a mathematical model for the hydrodynamic lubrication problem applied to bearings with oscillating motion. In contrast with common bearings, this type of bearing does not perform a complete rotation, belonging to a newly defined class: the bearings with oscillatory movement. The motivation lies in the tribology of internal combusti
Publicado em: 2006
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10. Um framework para alinhamento de percepção entre a estratégia de programas e o processo de decisão em projetos
Actually, all companies having witness that organizational performance has been prejudice by presence of gap between strategic and operation level from management resources. It absence has degraded the efficiency of execution mechanism of strategy and provoke deviations about results planned. This study show that to keep align project managers to original pr
Publicado em: 2006
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11. Fenômenos de instabilidade do arco na soldagem GMAW com gases de baixo potencial de oxidação
The arc welding process with continuous wire and gas protection (GMAW) is currently one of the most important metal joining process. This process has passed through a constant evolution with the introduction of power supplies with electronic control, and the use of techniques to control metal transfer, its operational stability and weld bead formation. Moreo
Publicado em: 2006
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12. Cidade e natureza: análise da gestão ambiental da zona costeira do litoral norte paulista
The objective of the thesis is to analyze the relations between urbanization and ambient quality in the coastal zone of the São Paulo North Coast. And to investigate if the public politics of ambient management and instruments of planning implemented by the State, until the moment, had contributed for the improvement of the conditions of quality of life in
Publicado em: 2006