Equipament
Mostrando 25-36 de 36 artigos, teses e dissertações.
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25. Equilibrio de fases em sistemas compostos por triacilglicerois / acidos graxos / etanol hidratado
Vegetable oils contain some components that must be removed during the refining process such as: free fatty acids, phosphatides and metal traces. Free fatty acids are removed by chemical refining or physical refining. The first process is very versatile and applicable for ali raw materiais, but for high acidic oils, great loss of neutral oil may occur. In su
Publicado em: 2002
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26. Extratibility of cadmium: influence of very wetheked soil attributes in conventional extractants and potential of low-molecular-weight organic acids. / Extratabilidade do cádmio: influência de atributos de solos muito intemperizados em extratores convencionais e potencialidade de ácidos orgânicos de baixo peso molecular.
The determination of toxic elements in the soil is an important tool for monitoring environmental pollution. Cadmium is an element potentially toxic to the plants, superior animals and man. Not too much is known about of this cation the behaviour in the very weathered tropical soils which present different attributes from the areas where most of the studies
Publicado em: 2002
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27. Estimativa da evapotranspiração de referência a partir da equação de Penman-Monteith, de medidas lisimétricas e de equações empíricas, em Paraipaba, CE. / Reference evapotranspiration estimated by penman-monteith equation, lysimetric measures and empirical equations in Paraipaba, state of Ceará, Brazil.
The irregular distribuition of rain in the Brazils northeast region become irrigation very important, being the main rational alternative to produce food. In an irrigation project the crop evapotranspiration (ETc) is the most important variable, which determine how much water is necessary to be applied to maintain the yield at high levels. Being ETc funcio
Publicado em: 2002
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28. Estudo de processos de produção de etanol anidro através da destilação extrativa salina com recuperação do agente de separação
One technique has been used largely in production of anhydrous ethanol is azeotropic distillation with benzene, which carcinogenic properties are well-known. An alternative process, ecologically viable, is extractive distillation by salt effect. The use of a soluble salt in dehydration of ethanol allows a reduction in energy requirement, besides producing en
Publicado em: 1999
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29. Custos de Refeições em Unidades de Alimentação e Nutrição: Uma Aplicação para a Divisão de Alimentação COSEAS/ U.S.P, em 1997. / Meal costs: an application in restaurants from the foodservice department of COSEAS/USP (University of São Paulo) in 1997.
In public organizations, costs are indicators of their economic efficiency. Different from private companies that seek profits, public service institutions-with their clearly defined social purposes and subsidies- need to evaluate and monitor their costs in order to supply the public administration with data for the allocation of budget resources. This work
Publicado em: 1999
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30. Determinação das flutuações na vazão de retorno provocadas pelo movimento de heave em unidades flutuantes de perfuração
Early detection of fluid influx from the formation, generally known as a "kick", is a major concern for the safety of the crew and rig equipament, and for the well itself. Many kicks have been detected at its very beginning by the delta flow parameter, which is simply the return mud flow rate minus the circulating rate. Accurate flow measurements in this cas
Publicado em: 1996
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31. Contribuição a analise dos efeitos de parametros de processo na qualidade de compositos obtidos por compofundição
The effects of process parameters in the efficiency of incorporation and distribution of silicon carbide particulate in AA7075 alIoy are investigated. The composites were produced by compocasting. It was necessary to design and build an equipament based on mechanical stirring of the liquid alIoyduring its solidification, to produce rheocast slurries and comp
Publicado em: 1996
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32. Separação de uma mistura de compostos digitalicos em escala semi-preparativa atraves de cromatografia liquida por deslocamento
The technique of high performance displacement chromatographywas applied to the semi-preparative separation of a mixture of threee digitalic glycosides: lanatoside C, digoxin and digitoxin, which are active as cardiotonics. The mobile and stationary phases selected, based on the criteria of high solubility and good separation were: methanol/water 80:20 and 6
Publicado em: 1994
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33. Contribuição ao estudo da ultrafiltração em modulos tubulares de membranas minerais
The history of membranes separation process in the College of Chemical Engineering -UNICAMP started with the donation of two equipaments, one for gas permeation studies and the other for ultrafiltration process studies, by FINEP -National Funding of Studies and Projects. The ultrafiltration equipament, a CARBOSEP model (ftom Rhonê-Pholenc), is composed of t
Publicado em: 1994
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34. Estudo experimental do excesso da energia livre de Gibbs dos sistemas ciclohexano e N-hexano/2-butanol entre 323,15 e 348,15 K
The main propose or this work was the experimental determination or the excess Gibbs free energy or binary systems of the hydrocarbon/alcohol type. The criteria used for selection of the systems included the expansion or experimental information about, the excess Gibbs free energy and a systematic study of its behaviour with regard to temperature variation a
Publicado em: 1990
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35. Analise da precisão dos metodos de odontometria eletrico e radiografico, em dentes multirradiculados, confrontados a medidas fisicas
The purpose of the present study, was to realize through eletrical and radiographic methods odontometric in multirooted teeth comparing it with the physical measurement the theet to evaluat it s precisions degree. It was also evaluated the precision of this methods in biopulpectomy and necropulpectomy. From selected patients it was made individual checking f
Publicado em: 1987
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36. Estudo da interação hiperfina magnética nos núcleos de 207 Pb em ferro como função da temperatura
The presente work is composed of three parts. In the first we make a synthesis of the historical evolution and the present state of the magnetic hyperfine interaction studies, especially in dilute ferromagnetic alloys. In the second part we analyse the experimental method, discussing the fundamental ideas of angular correlation and comparing it to other tech
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 1972