Angular Distribution
Mostrando 13-24 de 79 artigos, teses e dissertações.
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13. Simulação computacional, projeto, construção e análise do desempenho de uma matriz para extrusão em canal angular dedicada ao processamento de chapas / Computational simulation, design, construction and performance analysis of an equal channel angular pressing die for the processing of flat billets
The present work describes the design, construction and testing of an equal channel angular pressing (ECAP) die characterized by rectangular cross section channels. The main parameter of the ECAP dies is the geometry of the channels, given by the angle trough which they meet, and the curvature radii at this point. The material employed in the experiments was
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/08/2012
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14. Macroecologia do zooplâncton continental: padrões latitudinais e componentes locais e regionais na determinação da diversidade global / Macroecology of continental zooplankton: latitudinal patterns and local and regional components in determining global diversity
One of the oldest and best known global biological patterns in ecology is the latitudinal gradient of richness, characterized by a decrease in the number of species from Equator toward the poles. Several hypotheses, even today, attempt to explain the variation that occurs in the pattern of diversity of many animal and plants. Despite the advances that have b
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
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15. Análise de novos sinais para a detecção de ilhamento de geradores síncronos distribuídos / New signals for anti-islanding protection of synchronous distributed generators
Geradores síncronos conectados em redes de distribuição de energia elétrica estão sujeitos a operarem de forma ilhada após a ocorrência de distúrbios na rede elétrica. Ilhamento ocorre quando uma parte da rede de distribuição torna-se eletricamente isolada da fonte de energia principal (subestação), mas continua a ser energizada por geradores di
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
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16. Desempenho muscular isocinético do complexo do ombro de indivíduos com hemiparesia crônica
Introduction: Muscular weakness is the most common impairment following stroke and has been shown to be significantly related to upper limb function. Information is still scarce regarding the magnitude of the weaknesses during dynamic conditions and the specific residual deficits of the paretic upper limb regarding the glenohumeral and the scapulothoracic mu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2011
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17. Phenomenological analysis of elastic scattering reactions using different models
McIntyre and Frahn-Venter three-parameter models are used to analyze the experimental data of three elastic scattering reactions α+ 58Ni, α+ 116Sn and α+ 197Au at the same incident energy of 240MeV. The different α-scattering cases have the same number of minima and maxima in their oscillatory structures of angular distribution. The increase in the mass
Brazilian Journal of Physics. Publicado em: 2009-12
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18. Anomalias na distribuição angular da radiação cósmica de fundo em microondas / Anomalies in the angular distribution of the cosmic microwave background
Uma característica intrigante da distribuição angular da Radiação Cósmica de Fundo em Microondas (RCFM) foi identificada por meio da análise dos dados obtidos pelo Satélite COsmic Background Explorer (COBE). Foi constatado que o valor do quadrupolo medido é mais baixo que o esperado pelo modelo ΛCDM. Análises posteriores mostraram que a pr
Publicado em: 2009
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19. Study of the interaction of mass A=8 nuclei with carbon target and of the capture reaction 8Li(p,y)9Be of astrophysical interest / Estudo da interação de núcleos de massa A=8 com alvo de carbono e da reação de captura 8Li(p,)9Be de interesse astrofísico
The measurements of the angular distributions for the elastic scatterings 12C(Li,Li) and 12C(8B,8B) reported in this work have been done in two laboratories. Those corresponding to the angular distributions for the elastic scattering 12C(8Li,8Li) were performed at two ene&ies, 20.6 MeV and 23.9 MeV, at the Pelletron Laboratory of the University of São Paulo
Publicado em: 2009
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20. Thermodynamic properties of the field electromagnetic field in the CPT-odd standard extended / Propriedades termodinâmicas do campo eletromagnético no setor CPT-ımpar do modelo padrão estendido
In this work we study the effects of the spontaneous breaking of Lorentz symmetry on black body radiation phenomenon in the context of the Maxwell-Caroll-Field-Jackiw (MCFJ) model. The MCFJ model is the electromagnetic CPT-odd sector of the standard model extension and, it presents for a purely space-like background a positive-definite hamiltonian. Firstly,
Publicado em: 2009
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21. Análise multi-espectral dos eventos cíclicos de Carinae / Multi-spectral analysis of the cyclic events of Eta Carinae
In this thesis, a multi-wavelength study on the cyclic events of Eta Carinae was performed. The presence of a hole in the polar region of the Homunculus was confirmed by the velocity maps of the [Fe II] 12567 line. The blue-shifted component of the He I 10830, detected towards the NW lobe, was mapped and it is in the equatorial plane. It was observed that wi
Publicado em: 2009
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22. Processamento do cobre por EACI
Billets of copper were processed under four passes of equal channel angular pressing.The mechanical properties of material were evaluated through compression e microhardness tests. The microstructures of samples of cross and longitudinal sections were analyzed. Furthermore, strain distribution was achieved through finite element and the experiemental methods
Publicado em: 2008
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23. Propriedades físicas de planetas extrasolares
ROTATION is one the most important aspects to be observed in stellar astrophysics. Here we investigate that particularly in stars with planets. This physical parameter supplies information about the distribution of angular momentum in the planetary system, as well as its role on the control of dierent phenomena, including coronal and cromospherical emission
Publicado em: 2008
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24. Metabolismo do dibenzotiofeno por Cunninghamella elegans associados aos estudos morfolÃgicos e ultraestruturais
Considering the biotechnological potential of Cunninghamella elegans related to recalcitrant compounds in the environment the aim of this work was to evaluate the dibenzothiophene (DBT) degradation in association with morphological and ultrastructral aspects. Samples treated with DBT were submitted to gas chromatography coupled to mass spectrometry - GC-MS.
Publicado em: 2008