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Comparação quantitativa da comunidade de aves de um fragmento de floresta semidecidual do interior do Estado de São Paulo em intervalo de 30 anos
(Fundação Zoobotânica do Rio Grande do Sul, 2012-12-01)
Poucos estudos avaliaram em longo prazo a variação no tamanho populacional das espécies de aves em fragmentos florestais. Para avaliar a riqueza e a abundância específica da comunidade de aves de um remanescente de mata ...
Orchid bee baits attracting bees of the genus Megalopta (Hymenoptera, Halictidae) in Bauru region, São Paulo, Brazil: abundance, seasonality, and the importance of odors for dim-light bees
(Sociedade Brasileira de Entomologia, 2012-12-01)
Abelhas noturnas do gênero Megalopta (Smith, 1853) são geralmente coletadas usando fontes artificiais de luz. Porém entre os anos de 1993 e 2000, um total de 946 fêmeas de Megalopta foram capturadas (machos não foram ...
A perspectiva do lazer entre lideranças sindicais das áreas metropolitanas de São Paulo e de Lisboa
(Universidade Estadual Paulista (Unesp), Instituto de Biociências, 2011-01-01)
We intended, in this study, to understand the sense of the leisure, due to the new work relationships in times of globalization, for syndical leaders that act in entities of metropolitan areas of São Paulo (Brazil) and ...
Preparação de vidros e vitrocerâmicas de óxidos de metais pesados contendo prata: propriedades ópticas, estruturais e eletroquímicas
(Sociedade Brasileira de Química, 2012-01-01)
Silver containing heavy metal oxide glasses and glass ceramics of the system WO3-SbPO4-PbO-AgCl with different AgCl contents have been prepared and their thermal, structural and optical properties characterized. Glass ...
Diffusion of Interstitial Solutes in Nb-46wt% Ti Alloys Measured by Mechanical Spectroscopy
(Trans Tech Publications Ltd, 2012-01-01)
The mechanical properties of metals with a body-centered cubic (bcc) structure, such as Nb, Ta, V, and their alloys, are modified with the introduction of interstitial impurities, such as O, N, C, or H. These metals can ...
Oxygen Diffusion in an Nb-Ta Alloy Measured by Mechanical Spectroscopy
(Trans Tech Publications Ltd, 2011-01-01)
When metals that present bcc crystalline structure receive the addition of interstitial atoms as oxygen, nitrogen, hydrogen and carbon, they undergo significant changes in their physical properties because they are able ...
Oxygen Diffusion in Ti-20Mo Alloys, used as Biomaterial, Measured by Mechanical Spectroscopy
(Trans Tech Publications Ltd, 2012-01-01)
Titanium alloys are favorable implant materials for orthopedic applications, due to their desirable properties such as good corrosion resistance, low elasticity modulus, and excellent biocornpatibility. The research on ...
LIMIT CYCLES of DISCONTINUOUS PIECEWISE LINEAR DIFFERENTIAL SYSTEMS
(World Scientific Publ Co Pte Ltd, 2011-11-01)
We study the bifurcation of limit cycles from the periodic orbits of a two-dimensional (resp. four-dimensional) linear center in R(n) perturbed inside a class of discontinuous piecewise linear differential systems. Our ...
Generic Bifurcations of Planar Filippov Systems via Geometric Singular Perturbations
(Belgian Mathematical Soc Triomphe, 2011-01-01)
In this paper we deal with non-smooth vector fields on the plane. We prove that the analysis of their local behavior around certain typical singularities can be treated via singular perturbation theory. In fact, after a ...
Estudos de confiabilidade e validade do questionário de respostas socialmente habilidosas versão para pais - QRSH-Pais
(Universidade Federal do Rio Grande do Sul (UFRGS), Pós-Graduação em Psicologia, 2011-01-01)
Constata-se uma carência de instrumentos que avaliem habilidades sociais de crianças da educação infantil, de modo a predizer problemas comportamentais e instrumentar ações preventivas, justificando a proposição de ...