Surface Reconstruction
Mostrando 13-24 de 152 artigos, teses e dissertações.
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13. Green's function based finite element formulations for isotropic seepage analysis with free surface
Abstract A solution procedure using the Green's function based finite element method (FEM) is presented for two-dimensional nonlinear steady-state seepage analysis with the presence of free surface in isotropic dams. In the present algorithm, an iteration strategy is designed to convert the over-specified free surface problem to a regular partial differentia
Lat. Am. j. solids struct.. Publicado em: 2015-10
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14. Paired evaluation of calvarial reconstruction with prototyped titanium implants with and without ceramic coating
PURPOSE:To investigate the osseointegration properties of prototyped implants with tridimensionally interconnected pores made of the Ti6Al4V alloy and the influence of a thin calcium phosphate coating.METHODS: Bilateral critical size calvarial defects were created in thirty Wistar rats and filled with coated and uncoated implants in a randomized fashion. The
Acta Cir. Bras.. Publicado em: 2014-09
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15. Effects of coronal substrates and water storage on the microhardness of a resin cement used for luting ceramic crowns
Composite resin and metallic posts are the materials most employed for reconstruction of teeth presenting partial or total destruction of crowns. Resin-based cements have been widely used for cementation of ceramic crowns. The success of cementation depends on the achievement of adequate cement curing. Objectives: To evaluate the microhardness of Variolink
J. Appl. Oral Sci.. Publicado em: 2014-07
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16. Cartilage reconstruction using self-anchoring implant with functional gradient
This study presents an innovative and original biomaterial designed to substitute for articular cartilage and mimic its mechanical behavior, including elastic cushioning and the characteristics of fiber-reinforced gel. The material was composed of polyurethane and bioglass microfiber 45S5. It was designed to present a tribological surface to the cartilage of
Mat. Res.. Publicado em: 18/03/2014
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17. Evaluation of condyle defects using different reconstruction protocols of cone-beam computed tomography
This study was conducted to investigate how well cone-beam computed tomography (CBCT) can detect simulated cavitary defects in condyles, and to test the influence of the reconstruction protocols. Defects were created with spherical diamond burs (numbers 1013, 1016, 3017) in superior and/or posterior surfaces of twenty condyles. The condyles were scanned, and
Braz. oral res.. Publicado em: 2013-12
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18. Geração de b-splines via FPGA / B-spline generation via FPGA
The b-splines are used in CAD/CAM/CAE systems to represent and define complex curves and surfaces, being adopted by the main computer graphics standards due to features like compact mathematic representation, flexibility and affine transformations. In 3D acquisition systems and integrated CAM-CNC systems, the use of the b-spline in the geometric information
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/08/2012
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19. Analysis by the finite element method of the stress distribution in prosthetic components placed in implants with morse cone connection in the anterior maxilla / Análise pelo método dos elementos finitos da distribuição de tensões em componentes protéticos posicionados em implantes com conexão cone morse na região anterior da maxila
The aim of this study was to evaluate through the three-dimensional method of the finite elements the stress distribution in the bone / implant interface and implant / abutment on implants with morse cone connection, placed in the anterior maxilla. From a virtual reconstruction of bone from a CT scan, cantilever prosthesis (11-21) was simulated using prosthe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/08/2012
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20. Síntese e caracterização de biomateriais de fosfatos de cálcio a partir de conchas calcárias fossilizadas / Synthesis and characterization of biomaterials of calcium phosphate in from calcareous fossilized shells
Research has demonstrated in recent decades, that calcium phosphate bioceramics and nanocomposite with calcium phosphate matrix may be the new generation of biomaterials to use in the repair of defects and reconstruction of bone tissue. This can be explained by new microstructural and nanostructural characteristics, interconnected microporosity, surface area
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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21. Uma Nova EstratÃgia para Renderizar Descontinuidades e SuperfÃcies Intersectantes em Modelos Baseados em Splats / A New Strategy for Render and Surface Discontinuities in Models Based on Intersecting Splats
Splats based models have gained increasing attention due to its potential for rendering complex geometric models efficiently and with high quality. The absence connectivity information of these models allows complex modeling operations, as Boolean operations, and fractures in physics simulations. However, these operations often generate models with edges and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
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22. Síntese e caracterização de pós de fosfato tricálcio-β e de hidroxiapatita: elaboração de bifásicos HA/TCP-β para aplicações como substituto ósseo / Synthesis and characterization of powders of β -Tricalcium phosphate and hydroxyapatite: elaboration of HA/β -TCP biphasic for applications as bone substitute
The treatments of bone loss are current topics of research. The materials that stand out in the treatments of reconstruction and formation of new bone tissue, are the hydroxyapatite, the α and/or β calcium phosphates, and biphasic hydroxyapatite / α and/or β calcium phosphate. It is known from literature that these biomaterials h
Publicado em: 2011
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23. Assembléias de diatomáceas em sedimentos holocênicos no estremo sul do Brasil : reconstruções paleoambientais
This paper describes the diatom assemblages present in a sediment profile in the Lagoa do Peixe, Middle Littoral of Rio Grande do Sul, in order to make the palaeoenvironmental reconstruction and identify periods of increased marine influence and hydrodynamics, as a consequence of changes sea level occurred during the Holocene. The drill core T09 was selected
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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24. Reconstrução da hidrografia superficial do Atlântico Sul Ocidental desde o Último Máximo Glacial a partir do estudo de foraminíferos planctônicos / Sea surface hydrography reconstruction of the Western South Atlantic since the Last Glacial Maximum based on the study of planktonic foraminifera
The goal of this thesis is to document the paleoclimatic and paleoceanographic changes occurred at the millennial scale since the Last Glacial Maximum at the surface Western South Atlantic. Paleotemperature, paleosalinity and paleoproductivity estimates were obtained for this purpose based on faunal changes of foraminifera assemblages, carbon and oxygen stab
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/03/2010