Particles Transport
Mostrando 1-12 de 410 artigos, teses e dissertações.
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1. Influence of the Transport of Sea Spray on the Salinization of the Semiarid Region Waters (Bahia, Brazil)
The sea spray can be transported to long distances, reaching the semiarid regions. In this work, the rainwater and the atmospheric particulate matter were characterized by investigating the presence of sea spray in the atmosphere of the semiarid region of Bahia, Brazil, aiming to study the influence of its transport on the salinization of the waters of the r
J. Braz. Chem. Soc.. Publicado em: 2017-12
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2. Influence of Niobium and Molybdenum on Mechanical Strength and Wear Resistance of Microalloyed Steels
The HSLA (High-Strength Low Alloy) steels are used in the production of pipes, flanges and connectors to build ducts for ore, oil and gas transport. The conventional processes are the rolling or forging. In the transport of ore and heavy oil, the abrasive particles impair the surfaces and reduce the pipelines lifetime. Therefore, besides the mechanical prope
Mat. Res.. Publicado em: 05/06/2017
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3. CLINICAL ASPECTS OF THE POISONING BY THE PESTICIDE ENDOSULFAN
Endosulfan is an organochlorine insecticide, widely used in insect control. Unfortunately, it is also an acute neurotoxic compound to both insects and mammals, including humans, and has been responsible for many severe poisonings and several fatal cases. Endosulfan also imitates or enhances the effect of the female hormone estrogen, having the capability of
Quím. Nova. Publicado em: 2016-09
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4. Chemical composition modulates the adverse effects of particles on the mucociliary epithelium
OBJECTIVE:We compared the adverse effects of two types of real ambient particles; i.e., total suspended particles from an electrostatic precipitator of a steel mill and fine air particles from an urban ambient particulate matter of 2.5 µm, on mucociliary clearance.METHOD:Mucociliary function was quantified by mucociliary transport, ciliary beating frequency
Clinics. Publicado em: 2015-10
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5. Application of Computational fluid dynamic in aluminum refining through pneumatic injection of powders
Magnesium removal process from molten aluminum using particles of silica sand was studied from a hydrodynamic point of view using computational fluid dynamics (CFD). The gas-liquid flow was modeled by a model of the Euler type for both gas and liquid phase transport. Newton´s law of motion was used to describe the subsurface motion of injected solid particl
Mat. Res.. Publicado em: 2014-12
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6. On the prediction of pickup and saltation velocities in pneumatic conveying
This paper presents a comparative study of the critical pickup and saltation velocities of particles in horizontal pipelines for pneumatic conveying design. A comparative study is performed using different existing correlations in the literature for the determination of the minimum velocity of transport as a function of the particle and pipe diameter, partic
Braz. J. Chem. Eng.. Publicado em: 2014-03
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7. Modelagem da velocidade crítica de transporte de polpas minerais contendo partículas grossas. / Modeling critical velocity of transport for mineral slurries with coarse particles.
O dimensionamento de sistemas de transporte hidráulico de polpas minerais exige especial atenção à medida que partículas grossas apresentam um comportamento de sedimentação no interior dos tubos. Dentro desta situação, a velocidade de transporte da polpa mineral deve ter magnitude suficiente para suspender e transportar os sólidos, evitando que os
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/05/2012
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8. Convecção forçada de partículas poliméricas em fase diluída : curvas de pressão e distribuição de partículas / Forced convection of polymer particles in dilute phase : pressure curves and the particle distribution
O deslocamento de polímeros, cereais, minérios, produtos farmacêuticos e outros materiais particulados no interior de tubulações, tendo como fluido transportador o ar, é denominado de transporte pneumático. Esta técnica é comumente dividida em transporte em fase densa, com concentração de partículas acima de 30% em volume e transporte em fase dil
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/03/2012
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9. Aplicabilidade e validação do Geant4 para fótons e elétrons em radioterapia / GEANT4 applicability and validation to Photons and Electrons in Radiotherapy
Due to the increasing use of ionizing radiation in medical applications, in recent decades, the simulation codes for radiation interacting with matter, based on Monte Carlo Method, have been constantly adapted to applications in medical physics. TheMonte Carlo method is a statisticalmethod of numerical simulation of problems using essentially a sequence of r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/06/2011
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10. Modificações oxidativas de lipoproteínas de baixa densidade e seus anticorpos : associação com componentes do transporte reverso de colesterol e com a aterosclerose carotídea em adultos sem doença aterosclerótica estabelecida / Oxidative modification of plasma low density lipoproteins and their antibodies : association with the reverse cholesterol transport and carotid atherosclerosis in adults without established aterosclerotic disease
Cardiovascular disease (DCV) is the most common cause of death on western societies, affecting both sexes, with atherosclerosis being the most important underlying pathology. Atherosclerosis is accepted worldwide as an immuneinflammatory disease, in which the participation of the immune system is crucial for the beginning of endothelial dysfunction, fatty st
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/05/2011
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11. Escoamento de fluidos complexos e transporte de partÃculas em geometrias irregulares. / Complex fluid flows and particle transport in irregular geometries.
In this work many types of incompressible laminar Newtonian and Non-Newtonian flows are studied. The interplay of these flows with complex geometries was investigated using computational modeling and numerical solution of the conservation of momentum and mass continuity equations. As a first step, the computational modeling of a network of pores was adopted
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/04/2011
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12. Expressão do receptor de macrófago com estrutura de colágeno (MARCO) em macrófagos, células dendríticas e células tumorais após internalização de nanotubos de carbono / Expression of macrophage receptor with collagen structure (MARCO) in macrophages, dendritic cells and tumor cells after internalization of carbon nanotubes
The aplication of nanotechnology emerges with potential for application in the biomedical area, pathological diagnosis and treatment, drug transport and intracellular transport of molecules. Among the nanoparticles, carbon nanotubes (NT) belong to a new class of material for application in the biomedical area. Due to its small size, the NT can be internalize
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2011