3d Anisotropy
Mostrando 1-12 de 31 artigos, teses e dissertações.
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1. Ore resource estimation based on radial based functions - Case study on União Luiz and Morro do Carrapato Gold Deposits (Alta Floresta Gold Province)
Abstract Radial basis functions can be used as an alternative method for mineral resource estimation when ordinary kriging cannot be done because it is impossible to calculate an experimental variogram. Interpolation based on radial based functions is a method that is similar to ordinary kriging. In this context, this article presents the results of gold res
REM, Int. Eng. J.. Publicado em: 19/06/2019
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2. Microarchitecture and Radiological Flow Pattern of Cocoon-like Nanocellulose Hydrogels
Abstract This work investigates fluid mechanics and structural properties inside bacterial cellulose hydrogels in from of macroscopic anisotropic ellipsoid body cocoon-like 3D scaffolds. The hydrogels were evaluated by injections of iopamidol, a radiopaque medium used in medical radiological procedures. Results showed that hydromechanical behavior of BC hydr
Mat. Res.. Publicado em: 07/01/2019
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3. Enhancing quality in Diffusion Tensor Imaging with anisotropic anomalous diffusion filter
Abstract Introduction: Diffusion tensor imaging (DTI) is an important medical imaging modality that has been useful to the study of microstructural changes in neurological diseases. However, the image noise level is a major practical limitation, in which one simple solution could be the average signal from a sequential acquisition. Nevertheless, this approac
Res. Biomed. Eng.. Publicado em: 12/09/2017
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4. Investigação da microarquitetura óssea através de microtomografia 3D / Investigation of bone microarchitecture using 3D microtomography
X-Ray Computed Microtomography (uCT) is a nondestructive technique used to study the internal structure of bones with a spatial resolution of the order of microns. In this study, six pairs of bone samples (femur mouse) were studied by uCT. The tests were conducted in the absence or presence of aluminum filters (thickness of 0.25, 0.50 and 0.75 mm), using thr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2011
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5. Migração por extrapolação de ondas em três dimensões / Migration by wave extrapolation in three dimensions
In three dimensions, migration methods based on solving the one-way wave equation, besides facing problems to handle evanescent waves and to image steep dip reflectors, are still computationally expensive. For the problems of imaging steep dip reflectors and treat evanescent waves, in this dissertation, we use the complex Padé approximation. Because solving
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/04/2011
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6. Modelagem numerica por elementos de contorno 3D de juntas coladas em estruturas aeronauticas de material composito / Numerical modeling of bonded joints in aircraft structures of composites material using 3D boundary element method
Na indústria aeronáutica é comum o uso de juntas coladas, rebitadas e parafusadas na união de componentes ou partes estruturais. O projeto de juntas coladas é baseado em análise para a determinação das tensões normais e cisalhantes no adesivo e do campo de deslocamentos ao longo da junta. O objetivo deste trabalho é desenvolver uma ferramenta compu
Publicado em: 2009
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7. Desenvolvimento e avaliação clínica dos efeitos de formulações dermocosméticas contendo dimetilaminoetanol ou acetil hexapeptídeo-3 / Development and clinical evaluation of the effects of dermocosmetic formulations containing dimethylaminoetanol or acetyl hexapeptide-3.
Dimethylaminoethanol (DMAE) and acetyl hexapeptide-3 (AHP) have been used in dermocosmetic formulations for anti-aging purposes. However, few scientific papers are concerned about the effects of these active substances on cutaneous tissue. Thus, the aim of the present study is the development, evaluation of physical stability, safety and clinical efficacy of
Publicado em: 2009
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8. Analise de problemas de anisotropia 3D com sub regiões utilizando o metodo dos elementos de contorno / 3D anisotropic problems analysis with sub regions using the boundary element method
This work presents a tool for sub-domains analysis using the 3D Boundary Element Method (BEM3D). For its implementation are considered rectangular, quadratic and continuous elements, which means that the nodes share degrees of freedom and so, a proper formulation to deal with corners and edges between the sub regions is required. The matrices [H] and [G] are
Publicado em: 2008
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9. Large scale anisotropy of ultra high energy cosmic rays with the Pierre Auger Observatory / Anisotropia de larga escala em raios cosmicos de altissima energia no Observatorio Pierre Auger
Foi aplicado o método de reconstrução de uma anisotropia de raios cósmicos para certo número de direções simuladas, a partir de uma distribuição consistindo de modulação dipolar sobreposta a um fluxo isotrópico. Usou-se o método proposto por J. Aublin e E. Parizot, que permite reconstruir a amplitude e orientção do dipolo no espaço 3D para um
Publicado em: 2008
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10. Estudos estruturais do domínio catalítico da proteína tirosina fosfatase eta de rato / Structural studies of the catalytic domain of the rat protein tyrosine phosphatase eta
The rat protein tyrosine phosphatase eta, rPTPeta, is a transmembrane RPTP, with an intracellular portion composed of a unique catalytic region. The rPTPeta and the human homolog DEP-1 are down-regulated in rat and human neoplastic cells, respectively. However, the malignant phenotype is reverted after exogenous reconstitution of rPTPeta, suggesting that its
Publicado em: 2008
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11. CRESCIMENTO, ESTRUTURA E POLARIZAÇÃO DE TROCA EM BICAMADAS FERROMAGNETO / ANTIFERROMAGNETO PREPARADAS POR DEPOSIÇÃO EM CONDIÇÕES DE EPITAXIA POR FEIXE MOLECULAR: Fe / EuTe(111), Fe / Ni50Mn50(001) e Ni1-xFex / Fe50Mn50
Magnetic interaction at interfaces between different layered magnetic materials is an important current topic in physics and materials science, particularly when combining ferromagnetic metals and semiconductors. The exchange bias effect associated with the exchange coupling between antiferromagnetic (AFM) and ferromagnetic (FM) systems, has been extensively
Publicado em: 2007
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12. Magnetotelluric investigation of the lithosphere in the Alto Paranaíba Ígneous Province / Investigação magnetotelúrica da litosfera na província Ígnea do Alto Paranaíba
Magnetotelluric (MT)soundings are presented for the region of Alto Paranaíba Igneous Province (APIP), an important Cretaceous diamondiferous province in western Minas Gerais State. In addition to conventional wideband soundings, suitable for crustal scale investigations, long period MT systems were used to investigate the mantle lithosphere. This study is f
Publicado em: 2001