Maxwell Model
Mostrando 25-36 de 65 artigos, teses e dissertações.
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25. Equations LORENZ IN CROSS-FERROHIDRODINÂMICA / EQUAÇÕES DE LORENZ-CROSS NA FERROHIDRODINÂMICA
In this work we investigated the problem of Rayleigh-Bénard for a magnetic binary fluid, i.e., a magnetic fluid, which consist of magnetic nanopartilces stably dispersed in a liquid carrier. The theoretical calculations were performed based on a Lorenz-like model, which transforms a system of partial differential equations into ordinary differential ones. T
Publicado em: 2008
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26. Gauge symmetry breaking in the supersymmetric Chern-Simons model / Quebra de simetria de calibre no modelo de Chern-Simons supersimétrico
Através do formalismo de supercampos, estudamos as propriedades ultravioletas da eletrodinâmica quântica supersimétrica no espaço-tempo tridimensional. Mostramos que esta teoria é finita em todas as ordens de perturbação num calibre particular. Também apresentamos uma análise perturbativa do modelo de Chern-Simons supersimétrico acoplado a um supe
Publicado em: 2008
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27. Propriedades termo-eletrônicas da molécula do DNA
This thesis presents a comprehensive and up-to-date account of some physical properties of the DNA molecule, such as its thermodynamics (specific heat) and electronic (electronic transmissivity and localization factor, among others) aspects. The DNA molecule can be considered as a symbolic sequence of a four letter alphabet, namely guanine (G), adenine (A),
Publicado em: 2008
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28. Espectroscopia Ãptica nÃo linear de vidros especiais e colÃides
Nonlinear optical properties of special glasses and colloids were studied using the zscan technique. This technique aalows to calculate the nonlinear refraction index and the nonlinear absorption coefficient using the self-focusing or defocusing effect that appears when the incident laser pass through a nonlinear medium. Orthophosphate and polyphosphate anti
Publicado em: 2008
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29. Rotating and counterrotating relativistic thin disks as sources of stationary electrovacuum spacetimes
A detailed study is presented of the counterrotating model (CRM) for electrovacuum stationary axially symmetric relativistic thin disks of infinite extension without radial stress, in the case when the eigenvalues of the energy-momentum tensor of the disk are real quantities, so that there is not heat flow. We find a general constraint over the counterrotati
Brazilian Journal of Physics. Publicado em: 2007-09
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30. Separation of binary mixtures by pervaporation and reverse osmosis / Separação de misturas binarias por pervaporação e osmose inversa
In this work, the modelling and simulation of pervaporation and reverse osmosis processes for binary mixtures were carried out. The development of prediction methodologies for process variables of pervaporation and reverse osmosis without the necessity of experimental data was the general guideline followed; the experimental data used in these methodologies
Publicado em: 2007
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31. COMPORTAMENTO ELONGACIONAL DOS MATERIAIS TERMOPLÁSTICOS COMPÓSITOS / ELONGATIONAL BEHAVIOR OF COMPOSITE THERMOPLASTIC MATERIALS
Composite thermoplastic materials, like glass fiber reforced polypropropylene, are used increasingly in several industries. In particular, glass fiber reinforcement is used to improve the mechanical properties of thermoplastics, due to the high fiber modulous and to the better adesion between the fibers and the polymeric matrix. However, few data of material
Publicado em: 2007
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32. Avaliação do congelamento de solução modelo por condutividade termica. / Freezing evaluation of model solution by thermal conductivity.
As propriedades termofisicas dos alimentos são requeridas para o cálculo de tempo de processamento em projetos de equipamentos para a indústria de alimentos. Os processos de congelamento exigem dados precisos das propriedades térmicas do produto, tais como condutividade térmica, fração de gelo, calor específico e entalpia. A necessidade do conhecimen
Publicado em: 2007
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33. The effects of sucrose on the mechanical properties of acid milk proteins-kappa-carrageenan gels
Mechanical properties have been widely correlated with textural characteristics to determine the interactions during the process formation of dairy gel. These interactions are strongly affected by process conditions and system composition. In the present study, the rheological of acid-induced protein dairy gels with (2(7-3)) and without (2(6-2)) sucrose and
Brazilian Journal of Chemical Engineering. Publicado em: 2006-03
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34. ESTUDO DO POTENCIAL DE INTERAÇÃO ELÉTRON-ELÉTRON NO CONTEXTO DA TEORIA DE MAXWELL-CHERN-SIMONSPROCA COM VIOLAÇÃO DE LORENTZ / STUDY OF POTENTIAL OF INTERACTION ELECTRON-ELECTRON IN THE CONTEXT OF THE THEORY OF MAXWELL - CHERN - SIMONSPROCA WITH BREACH OF LORENTZ
This work is initiated with the presentation of an overview on the main theoretical models of planar electrodynamics (QED3), which are studied for their classical solutions. This is done by obtaining the equations of wave, which provide their solutions to the fields and potential. As a result, makes up the youngest of the potential for interaction and ᗹ
Publicado em: 2006
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35. Extension of GENSMAC to incompressible flows governed by the Maxwell and K-BKZ integral models / Extensão de GENSMAC para escoamentos de fluidos governados pelos modelos integrais Maxwell e K-BKZ
Este trabalho tem como objetivo desenvolver um método numérico para simular escoamentos incompressíveis, isotérmicos, confinados ou com superfícies livres, de fuidos viscoelásticos governados pelos modelos integrais de Maxwell e K-BKZ (Kaye-Bernstein, Kearsley e Zapas). A técnica numérica apresentada é uma extensão do método GENSMAC (Tomé McKee -
Publicado em: 2006
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36. VÃrtices NÃo-Abelianos com Acoplamento NÃo-MÃnimo em um Background Gravitacional
The main purpose of this thesis is to investigate how the non-Abelian gauge symmetry affects the solutions of the equations of motion in some field theory models. We concern ourselves specifically with three dimensional field theories. We will note here that planar systems give us the needed informations about the theories approached here. Topological defect
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2005