Pitzer
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Solubility measurement and solid-liquid equilibrium model for the ternary system MgBr2 + MgSO4 + H2O at 288.15 K
The solubility of magnesium minerals and the refractive index of the ternary system MgBr2 + MgSO4 + H2O at 288.15 K were investigated using an isothermal dissolution method. It was found that there are two invariant points in the phase diagram and the solubility isotherm of this ternary system consists of three branches, corresponding to equilibrium crystall
Braz. J. Chem. Eng.. Publicado em: 2014-06
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2. Solid-liquid stable phase equilibria of the ternary systems MgCl2 + MgB6O10+ H2O AND MgSO4 + MgB6O10 + H2O at 308.15 K
The solubilities and the relevant physicochemical properties of the ternary systems MgCl2 + MgB6O10 + H2O and MgSO4 + MgB6O10 + H2O at 308.15 K were investigated using an isothermal dissolution method. It was found that there is one invariant point, two univariant curves, and two crystallization regions of the systems. The systems belong to a simple co-satur
Braz. J. Chem. Eng.. Publicado em: 2014-03
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3. Estudo do equilíbrio sólido-líquido de sistemas contendo aminoácidos e proteínas. / Study of the solid-liquid equilibrium of systems containing amino acids and proteins.
A modelagem termodinâmica do equilíbrio sólido-líquido de sistemas que contêm aminoácidos e proteínas tem sido cada vez mais necessária para o desenvolvimento de equações que permitam um projeto mais racional e eficiente das operações unitárias encontradas nos processos de purificação destas moléculas, tais como a precipitação e a cristaliz
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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4. Thermodynamic modeling of aqueous two phase systems containing salts and polymers. / Modelagem termodinâmica de sistemas aquosos bifásicos contendo sais e polímeros.
The thermodynamic modeling of phase equilibrium in aqueous two phase systems containing the neutral polymer poly(ethylene glycol) and a salt was studied in this work. The implemented model is based on the Pitzer equation for electrolytes solutions, modified in order to account for the influence of polymer properties in both the medium dielectric constant and
Publicado em: 2008
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5. Modelo de intervenção em orientação familiar: um estudo qualitativo com foco na educação dos filhos / Model intervention in family guidance: a qualitative study focusing on children s education
Essa dissertação Modelo de Intervenção em Orientação Familiar: um estudo qualitativo com foco na educação dos filhos teve apoio da Fapesp, e consiste na seqüência da Pesquisa Educação Parental: uma análise do padrão de educação dos filhos em famílias de baixa renda, realizada como trabalho de conclusão do curso de Psicologia na UNITAU, tamb
Publicado em: 2008
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6. Study of sodium chloride scaling in salt dissolver of a chlor-alkali plant / Estudo da incrustação em saturador de cloreto de sódio em unidade de produção de cloro-soda.
In the chlor-alkali industry, a Salt Dissolver has the objective of producing brine saturated in sodium chloride to feed electrolytic cells. However, the Dissolver studied in this work presented an incrustation of 1.5 meters of thickness, formed during nine years of operation. Many samples were collected in distinct positions of the equipment to allow proper
Publicado em: 2005
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7. Seletividade da Clinoptilolita natural por metais tóxicos em sistemas aquosos.
Obs.: Devido a restrições dos caracteres especias, verifcar resumo em texto completo para download. As zeólitas naturais constituem os trocadores iônicos inorgânicos mais importantes, as quais mostram elevada capacidade de troca iônica, seletividade e compatibilidade com o ambiente natural. Os metais pesados são conhecidos pela sua toxicidade e seus d
Publicado em: 2004
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8. Estudo do equilibrio liquido-liquido, da partição de insulina e da pre-purificação da proteina de fusão precursora da insulina humana em sistemas aquosos bifasicos do tipo PEG/Sal / Study of liquid-liquid equilibrium, the partition of insulin and pre-purification of the fusion protein precursor of human insulin in aqueous biphasic systems of the type PEG / salt
In this work the primary purification of a fusion protein precursor of human insulin and produced by recombinant E. coli has been studied using aqueous two-phase systems. The fusion protein was provided by the pharmaceutical company Biobrás S.A (Montes Claros/Brazil) and was dissolved in 8M area. Partitioning essays of fusion protein were investigated in th
Publicado em: 2003
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9. Estudo experimental e modelagem do volume em excesso de soluções salinas de agua e acetonitrila a 298,15K
Excess volumes of salty systems of water-acetonitrile, at 298.15 K, are studied in this thesis through experimental data obtained by densitometer (with a vibrating-tube densimeter) and theorical modelling. The salts are: calcium acetate, potassium acetate, tetraethylamonium bromide, lithium chloride, sodium tetraphenylborate, at different concentrations. For
Publicado em: 1998
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10. Desenvolvimento de metodos ab-initio para estudos envolvendo quebra de simetria em sistemas moleculares de grande porte
This doctoral thesis resumes the work performed by the present author in the period starting in August 1988 to January 1993. Three major points were studied during this job; a) Development and benchmarks for an original simetrization formula in ab-initio calculations; b) Modifications and extensive benchmarks in direct-SCF ab-initio calculations; c) Developm
Publicado em: 1993
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11. A FUNDAMENTAL THEORY OF SUPERCONDUCTIVITY
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12. Dielectric constant of water at very high temperature and pressure
Pertinent statistical mechanical theory is combined with the available measurements of the dielectric constant of water at high temperature and pressure to predict that property at still higher temperature. The dielectric constant is needed in connection with studies of electrolytes such as NaCl/H2O at very high temperature.