Flows Control
Mostrando 25-36 de 143 artigos, teses e dissertações.
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25. Experimental investigation of horizontal gas-liquid slug flow by means of wire-mesh sensor
The monitoring and visualization of two-phase flow is of great importance either from technical/practical point of view for process control and supervision or from scientific/theoretical point of view, for the understanding of physical phenomenon. A wire-mesh sensor was applied to experimentally investigate two-phase horizontal pipe flow. Furthermore, some p
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011
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26. Gerenciamento de riscos através do mapeamento de processos
O gerenciamento de riscos corporativos representa uma ferramenta que auxilia as empresas a alcançarem seus objetivos estratégicos e de rentabilidade, prevenindo falhas e perdas. O aumento da complexidade das organizações contemporâneas torna esta prática ainda mais importante. Apesar disto, ainda há pouca literatura no Brasil que aborde o assunto, res
Publicado em: 2011
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27. Estudo da cinética e do equilíbrio da adsorção da cefamicina C em resina de troca iônica e simulação do processo contínuo
The cephamycin C (CefC) is a beta-lactam antibiotic produced from submerged and aerated cultures of Streptomyces clavuligerus. Acts as inhibitor of cell wall formation of Gram-negative bacteria and is resistant to the hydrolytic action of betalactamases enzymes. The literature presents few scientific results published regarding the purification of CefC, and
Publicado em: 2011
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28. Medidas da emissão de poluentes e da eficiência na combustão assistida do glicerol residual de biodiesel. / Measurements of emissions and fuel efficiency of the assisted residual glycerol biodiesel.
With increased global production of biofuels in particular biodiesel, an excess of glycerol is being generated worldwide. This has caused a sharp drop in the price of this compound in the world market. Much thought has been given to a destination for this residue, since no one can lay it in the environment and one of the alternatives be to use would its calo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/11/2010
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29. Estudo computacional da etapa fermentativa da produção de cerveja e proposta de uma estratégia de controle para o processo. / Selection of models and proposal of a control strategy for the fermentative stage of the beer production. 2010
Beer is the oldest alcoholic beverage in the world, and its processing has been evolving along the time. Nowadays, beer trading occupies an important position in the economic market since it is the most consumed beverage in Brazil and around the world. Due to this economic significance, the search for more efficient processes that are able to keep the sensor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/03/2010
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30. Una estimación de una ecuación gravitacional para los flujos bilaterales de manufacturas Mercosur-Unión Europea
This paper explores the determinants of MERCOSUR-EU bilateral trade flows for 28 manufacturing sectors. In doing so, a gravity equation is estimated for 16 countries for the period 1991-2004. Asexpected, the combined output of trade partners, the distance between them, their population and a number of other control variables seem to explain the bilateral tra
Economia Aplicada. Publicado em: 2010-03
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31. Environmentally responsive polymeric "intelligent" materials: the ideal components of non-mechanical valves that control flow in microfluidic systems
Miniaturization and commercialization of integrated microfluidic systems has had great success with the development of a wide variety of techniques in microfabrication, since they allowed their construction at a low cost and by following simple step-series procedures. However, one of the major challenges in the design of microfluidic systems is to achieve co
Brazilian Journal of Chemical Engineering. Publicado em: 2010-03
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32. An arbitrary lagrangian-eulerian method for surface-tension dominated flows with contact lines / Simulação numérica de escoamentos bidimensionais com superfícies livres e linhas de contato dinâmicas
An arbitrary lagrangian-eulerian finite element method to solve surface tension dominated flows is presented. Such flows are important in many applications, particularly in capillary channels, that appear in microscale flows. The resolution of such flows presents several challenges that are addressed in this work. The flow is solved only in the liquid phase,
Publicado em: 2010
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33. Dinâmica da conta financeira do balanço de pagamentos dos países emergentes no período 1990-2009: a vulnerabilidade continua
The main purpose of this study is to analyze the profile of the Financial Account on the emerging economies, more specifically in the cases of Brazil, Argentina, Mexico, Chile, South Korea, Thailand, India and Russia. The goal is to emphasize the high influence of short-term capital in the Balance of Payments in these economies after the financial opening wh
Publicado em: 2010
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34. Uma arquitetura de controle de qualidade de serviço aplicada a redes heterogêneas e serviços convergentes. / An architecture for QoS control applied to heterogeneous networks and convergent services.
One of the targets of the next generation communication systems is to provide access to any service, to any user, anytime, anywhere, regardless the access network technology or type of user device (mobile phone, PDA, personal computer, and so on). This scenario is called convergence of services by heterogeneous networks, and in such scenario quality of servi
Publicado em: 2010
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35. Aplicação do método dos elementos de contorno com dupla reciprocidade em problemas difusivos-advectivos estacionários não lineares
In this work is implemented a numerical model to simulate computationally the distribution of pressures, velocities, temperatures and heat flows in two-dimensional stationary control volumes. The relation between temperatures and velocities is established by the advective-diffusive Equation, using the Dual Reciprocity Boundary Element Method formulation...
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/12/2009
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36. Rethinking the economics of capital mobility and capital controls
This paper reexamines the issue of international financial capital mobility, which is today's economic orthodoxy. Discussion is often framed in terms of the impossible trinity. That framing distorts discussion by representing capital mobility as having equal significance with sovereign monetary policy and control over exchange rates. It also distorts discuss
Brazilian Journal of Political Economy. Publicado em: 2009-09