Thermodynamical Properties
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Feasibility of RF Sputtering and PIIID for production of thin films from red mud
During the extraction of aluminum from bauxite, a waste of oxides containing traces of heavy metals in a highly alkaline matrix, called Red Mud (RM), is produced. In this study RM is characterized and the feasibility of using it as a precursor for the production of thin films by Plasma Sputtering and by Plasma Immersion Ion Implantation and Deposition (PIIID
Mat. Res.. Publicado em: 26/10/2014
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2. On the predictability of chemical kinetics for the description of the combustion of simple fuels
This work presents a systematic comparison between several detailed chemical kinetic models recently developed and available experimental data. The aim is to assess the predictive capabilities of the combustion with air of the following fuels: hydrogen, methane, ethanol and liquefied petroleum gas, in a large range of equivalence ratio. The prevailing thermo
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-12
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3. Ion-specific thermodynamical properties of aqueous proteins
Interações íon-específicas (dependentes do tipo de íon presente em solução) entre duas partículas coloidais são calculadas usando a equação de Poisson-Boltzmann (PB) modificada e simulações de Monte Carlo (MC). As equações de PB apresentam bons resultados de perfis de concentração nas proximidades de um macro-íon, principalmente para soluç
Anais da Academia Brasileira de Ciências. Publicado em: 2010-03
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4. Termodinâmica de sistemas fullerênicos em soluções / Thermodynamic systems fullerenic solutions
In this work, we present a computational study of the solvation process of the C60 fullerene and its hydroxylated derivate, the fullerenol C60(OH)24, in aqueous environment and organic solvents, using classical molecular dynamics simulations. Diverse sets of parameters to the Lennard-Jones interaction potential have been utilized in simulations of fullerenes
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/09/2009
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5. Seleção de microrganismos produtores de frutosiltransferase e estudo das propriedades bioquimicas da frutosiltransferase de Penicillium sp / Screening of microrganisms for transfructosylating activity and study of biochemical properties of fructosyltransferase from Penicillium sp
t: Impulsionados pela grande demanda por alimentos ¿saudáveis¿ e de calorias controladas, têm surgido desde os anos 80 um grande número de adoçantes alternativos e, entre eles, diversos oligossacarídeos. Entre os oligossacarídeos mais estudados estão os frutooligossacarídeos (FOS), que se tornaram mais importantes por suas propriedades funcionais q
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/02/2009
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6. Alloying in GeSi:Si (001) epitaxial nanocrystals / Formação de ligas em nanocristais epitaxiais de GeSi:Si (001)
The structural and electronic properties of nanoscale materials strongly depend on the chemical composition, as well as their size and shape. A big variety of morphologies can be achieved by controlling the experimental conditions during the epitaxial growth of Ge on a Si(001) substrate. In particular, three-dimensional islands with well defined size and sha
Publicado em: 2007
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7. The water factor in the protein-folding problem
Globular proteins are produced as a linear chain of aminoacids in water solution in the cell and, in the same aqueous environment, fold into their respective unique and functional native structures. In spite of this, many theoretical studies have tried to explain the folding process in vacuum, but in this paper we adopt an alternative point of view: the fold
Brazilian Journal of Physics. Publicado em: 2004-03
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8. Stereo-hydrophobic potential and topological properties in the protein folding / "Potencial estéreo-hidrofóbico e propriedades topológicas no enovelamento de proteínas".
The understanding of the basic principles of the protein folding process may lead to very important applications. Although all significant aspects of this problem are not yet known, experimental and theoretical results have given important contribution on the subject, as, for instance, about the dominant role of the hydrophobic forces. In order to contribute
Publicado em: 2003
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9. Metodologia para caracterizaÃÃo do desempenho de unidades de ar condicionado tipo janela
The aim of this work is to evaluate the functioning conditions of window air conditioning units through a methodology to characterize their performance. With this purpose, a climatized essay tunnel (TEC) was planned and built, attending the pattern and norms of ABNT (Brazilian Association of Technical Standards) to test window air conditioning units. The dev
Publicado em: 2003
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10. Black holes and thermodynamics / Buracos negros e termodinâmica
In the present work, we have established the connections between black-hole physics and thermodynamics, searching for similarities and differences between these two branches of physicxs, which might look quite far apart. Such links were first sought for and established during the 1970s, thanks to the pioneering work of S. Hawking and Jacob D. Bekenstein, amo
Publicado em: 2001
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11. Particle-hole assimetry on the two-impurity Kondo model. / Assimetria partícula-buraco no modelo de Kondo de duas impurezas.
Este trabalho tem como objetivo estudar as propriedades termodinâmicas do Hamiltoniano Kondo de duas impurezas. Desenvolvemos uma extensão da técnica do grupo de renormalização numérico (GRN) que permite diagonalizar o modelo Kondo de duas impurezas convencional preservando a sua assimetria partícula-buraco. Essa assimetria elimina o ponto crítico, c
Publicado em: 1997
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12. Numerical Renormalization-group Computation of Specific Heats. / Calor específico do modelo de Anderson de uma impureza por grupo de renormalização numérico
The specific heat and the entropy of the one-impurity symmetric Anderson Model are calculated using the Numerical Renormalization Group (NRG). The heart of the method is the logarithmic discretization of the metal conduction band where the impurity is coupled. However, this discretization, inherent in the method, introduces oscillations in the thermodynamica
Publicado em: 1995