Thin Domains
Mostrando 1-12 de 56 artigos, teses e dissertações.
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1. Otimização sem derivadas em conjuntos magros / Derivative-free optimization on thin domains
Os problemas de otimização sem derivadas surgem de modelos para os quais as derivadas das funções e das restrições envolvidas, por alguma razão, não estão disponíveis. Os motivos variam desde usuários que não querem programar as derivadas até funções excessivamente complexas e caixas-pretas, oriundas de simulações só possíveis graças ao c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/03/2012
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2. Semicontinuidade inferior de atratores para problemas parabólicos em domínios finos / Lower semicontinuity of attactors for parabolic problems in thin domains
Neste trabalho estudamos problemas de reação-difusão semilineares do tipo u IND..t(x, t) = DELTAu(x, t)+ f (u(x, t)), x PERTENCE AOMEGAPARTIALU/PARTIALV (x, t) = 0, x PERTENCE APARTIALOMEGA. Desenvolvemos uma teoria abstrata para a obtenção da continuidade da dinâmica assintótica de (P) sob perturbações singulares do domínio espacial W e aplicamos
Publicado em: 2007
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3. Geologia do sudoeste do Estado de Goiás : Integração de dados geológicos e aerogeofísicos de alta densidade
The airborne magnetic and gamma ray spectrometry data related to the Airborne Geophysic Survey Project of the State of Goiás (Block 1) executed between 2004 and 2006 and considered of high density by the acquisition and treatment configuration, were integrated in GIS environment with the existing geologic information, in the SW Goiás region located from th
Publicado em: 2007
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4. Estudo da orientação molecular em filmes automontados de azopolímeros por meio da técnica de geração de segundo harmônico (SHG) / Molecular orientation in self-assembled azo-polymer thin films studied by second harmonic generation (SHG).
Ultrathin films of polymers containing azochromophores are important for many applications such as optical data storage, formation of surface relief gratings, liquid crystal alignment layers and non-linear optical devices. Among several techniques for fabricating organic thin films, the Layer-By-Layer electrostatic self-assembly (LBL) is very attractive due
Publicado em: 2006
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5. Caracterização macro, meso e microscópica das estruturas frágeis do corpo arenítico conglomerático da região de Santana do Acaraú (CE) e seu embasamento circundante
The structural framework of the sedimentary basins usually plays an important role in oil prospects and reservoirs. Geometry, interconectivity and density of the brittle features developed during basin evolution could change the permo-porous character of the rocks involved in generation, migration and entrapment of fluid flow. Once the structural characteriz
Publicado em: 2005
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6. Desenvolvimento do tendão elastico de aves : caracteristicas estruturais e aspectos ultra-estruturais relacionados a região elastica e a fibrocartilagem
Tendons are "usua11y suited for the transmission of mechanical forces from the musc1e of origin the bone of insertion. However, in many instances there are additionaI funCtiODS and properties difrering from the tendon ordinary anay, facing different biomechanical demands. The elastic tendon of the chicken wing has an elastic region that outspends to a large
Publicado em: 2002
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7. Equações de Navier-Stokes com densidade variavel e difusão de massa em dominios finos
In this work we analyze a simplified model for the Navier-Stokes equations governing the flow of an incompressible viscous fluid with variable density and mass diffusion. These equations are studied in thin three-dimensional domains under periodic boundary conditions. The behavior of the solutions of such equations is analyze when the thickness of the domain
Publicado em: 2000
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8. Análise geométrica e cinemática dos metassedimentos da Klippe de Ijaci, Sul de Minas Gerais / não informado pelo autor.
The present work was undertaken in the Ijaci region, southern Minas Gerais state, and involved geological maping, emphasizing geometric and kinematic analysis of the structures in the meta-sedimentary cover. Two litostructural domains were distinguished: the basement domain, composed by granitic and granodioritic orthogneisses, with a steep plunging EW tecto
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/06/1996
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9. The Organization of Orientation-Selective, Luminance-Change and Binocular- Preference Domains in the Second (V2) and Third (V3) Visual Areas of New World Owl Monkeys as Revealed by Intrinsic Signal Optical Imaging
Optical imaging was used to map patterns of visually evoked activation in the second (V2) and third (V3) visual areas of owl monkeys. Modular patterns of activation were produced in response to stimulation with oriented gratings, binocular versus monocular stimulation, and stimuli containing wide-field luminance changes. In V2, luminance-change domains tende
Oxford University Press.
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10. Shape-selective transport through rectangle-based molecular materials: Thin-film scanning electrochemical microscopy studies
Microporous thin films (≈50 to 400 nm) composed of discrete, cavity-containing molecular rectangles have been prepared. The films, which contain both amorphous and microcrystalline domains, display shape-selective transport behavior. They are permeable to small molecules and to molecules that are short or narrow in at least one dimension—for example, elo
National Academy of Sciences.
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11. Identification of covalently linked trimeric and tetrameric D domains in crosslinked fibrin.
Following proteolytic conversion of fibrinogen to fibrin, clot assembly commences with formation of double-stranded fibrils that subsequently branch extensively in forming a three-dimensional network. Plasmin digests of fibrin clots that had first been covalently crosslinked by plasma transglutaminase (factor XIIIa) contained multimeric proteolytic fragments
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12. Pectin Modification in Cell Walls of Ripening Tomatoes Occurs in Distinct Domains.
The class of cell wall polysaccharides that undergoes the most extensive modification during tomato (Lycopersicon esculentum) fruit ripening is pectin. De-esterification of the polygalacturonic acid backbone by pectin methylesterase facilitates the depolymerization of pectins by polygalacturonase II (PGII). To investigate the spatial aspects of the de-esteri