Lubrification
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. The challenging approach to a combined neurotrophic and exposure corneal ulcer
RESUMO Este trabalho relata um caso clínico desafiante de doente com uma úlcera de córnea neurotrófica e de exposição. Doente do sexo masculino, de 75 anos, com antecedentes de queratites herpéticas de repetição no olho direito (OD), complicadas com o desenvolvimento de uma insuficiência límbica, foi submetido com sucesso a transplante de células
Rev. bras.oftalmol.. Publicado em: 01/07/2019
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2. Avaliação de mancais hidrodinâmicos com descontinuidades geométricas / Evaluation of hydrodynamic bearings with geometric discontinuities
Hydrodynamic bearings are widely used in rotating machines, being the element responsible for the interaction between the rotor and the supporting structure. Therefore, in order to describe the dynamic behavior of the rotating shafts, it is necessary to know the journal bearings characteristics. For this reason, the purpose of this work is to analyze the dyn
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2011
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3. SNAP OFF OF EMULSION DROPS IN THE FLOW THROUGH A CONSTRICTED CAPILLARY / ANÁLISE DO PROCESSO DE QUEBRA DE GOTA DE EMULSÕES NO ESCOAMENTO ATRAVÉS DE UM CAPILAR COM GARGANTA
The snap off of emulsion drops appears in several industrial activities, including the oil industry. The analysis snap off in a constricted capillary is related to the study of emulsion formation and its characteristics in a porous media. This thesis presents a numerical model based on the conservation equations and lubrification theory developed for Newtoni
Publicado em: 2010
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4. Análise da lubrificação seca para trefilação e proposta de padronização de lubrificantes para arame de médio carbono / Analysis of dry lubrication on wire drawing and proposal for standardization of lubricants for medium-carbon wire
Este trabalho apresenta um estudo sobre lubrificação seca para um arame ovalado 15x17 (2,40 x 2,90mm) de médio carbono em uma máquina de 7 passes de redução. Foram analisados dois tipos de lubrificantes utilizados na trefilaria da Gerdau Riograndense, um sabão a base de cálcio e outro a base de sódio, com o objetivo de identificar o tipo de lubrific
Publicado em: 2010
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5. Modelagem e controle de microturbina a gás do tipo split-shaft. / Modeling and control of slip-shaft gas microturbine.
The objective of the present work is the development of the model of a split-shaft micro gas turbine with feed back control system. A bibliographical review of the works on control of gas turbines indicated that there are very few works dealing this type of gas turbines. The model was developed starting from the basic geometry of the turbine and applying the
Publicado em: 2010
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6. Modelo dinamico para o contato em mancais de elementos rolantes sujeito a lubrificação elastohidrodinamica / Dynamic model for the contact in rolling element bearings under elastohydrodynamic lubrification
With the need of time reduction on mechanical projects, the use of computational models for the analysis of mechanical components becomes mandatory in order to avoid excessive physical tests. Based on this assumption, is necessary to study the dynamic of previously assumed rigid components, as the rolling elements bearings, and thus knowing its influence on
Publicado em: 2009
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7. Software para estimativa do custo operacional da maquinaria agrÃcola â MAQCONTROL
This work describes the development of a software for farm machinery operation cost calculation, once the use of machines and agricultural implements are one of the factors that demand larger operational costs. Those costs are divided in fixed and variable costs. The objective of this work was to develop a software (MAQCONTROL) that contributed in the proces
Publicado em: 2007
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8. Treatment of industry wastewater from a plastic containers (containing originally lubricant oil) recycling industry : biological and physical-chemical process / Tratamento de efluentes de uma industria de reciclagem de embalagens plasticas de oleos lubrificantes : processo biologico e fisico-quimico
In the present work, the treatment of the wastewater originated in a plastic container (containing originally lubricant oil) recycling industry was investigated. The purpose of this work was to study the individual efficiency to treat the industrial effluent, mixture of the plastic container washing process wastewater and sanitary wastewater, by activated sl
Publicado em: 2007
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9. Desenvolvimento farmacotÃcnico e desenvolvimento de estabilidade de comprimidos à base de captopril / Pharmacotechnician development and a study based on the stability of tablets with captopril
Hypertension is a public health problem considered by the Worldwide Health Organisation (OMS) as the third death cause in the world, overpassing only by unsafe sex and malnutrition. In the world, there are 600 million hypertensive people. In which of these, 500 million need an immediate medical intervention. In Brazil, there are about 30 million infected by
Publicado em: 2006
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10. Uso de hidrocarbonetos em sistema frigorifico de pequeno porte
Since the stratrosphere ozone depletion has been observed many studies have been developed to find substances to replace chlorine compounds of chlorofluorocarbons. Hydrocarbon mixtures (propanelisobutane) were indicated because they are natural refrigerants. This work presents the experimental avaliation of a small freezer s behaviour working with R12 and wi
Publicado em: 1996
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11. Discos sustentados por colchão de ar: uma nova proposta. / Air-supported pucks: a new proposal.
Os discos sustentados por colchão de ar têm encontrado larga aplicação didática. Sua utilização, contudo, esbarra em algumas dificuldades, pois os sistemas convencionais que permitem registrar as trajetórias dos discos e fornecer o gás para sustentá-los tornam difícil e dispendioso o seu emprego. Neste trabalho mostra-se como essas dificuldades po
Publicado em: 1981