Transport Phenomenon
Mostrando 1-12 de 146 artigos, teses e dissertações.
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1. Experimental and Computational Studies of the Adsorption of Furan, Pyrrole, and Thiophene on Hydroxyapatites in a Single and Ternary Component
Non-doped (Hap) and doped hydroxyapatites with Cu2+ and Fe2+ were synthesized and used to study the adsorption of furan (Fur), pyrrole (Pyr), and thiophene (Thi) in single and ternary component systems. Spectroscopic data and N2 isotherms indicated there were no structural alterations in Hap with the incorporation of Cu2+ and Fe2+. For both single and ternar
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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2. Dynamic Response Analysis of Geogrid Reinforced Embankment Supported by CFG Pile Structure During a High-Speed Train Operation
Abstract The performance of railroad structure has a tremendous influence on the safety and stable operation of high-speed trains. Strong vibrations and the degradation rate of the track are the main factors affecting the transport safety of a railroad built over a weak soil. Geogrid reinforced embankment supported by pile structure is a new efficient constr
Lat. Am. j. solids struct.. Publicado em: 15/08/2019
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3. PRODUÃÃO INDUSTRIAL, ARRECADAÃÃO E GUERRA FISCAL ENTRE OS ESTADOS DO NORDESTE: UMA PROPOSTA DE INVESTIGAÃÃO / INDUSTRIAL PRODUCTION, AND WAR TAX REVENUE BETWEEN THE NORTHEAST: A PROPOSAL FOR RESEARCH
The study involves the application of time series techniques to investigate the phenomenon of the War Tax generated by the financial and tax benefits granted in a general way by the Federal District and municipalities seeking new investments for the development of their region in order to leverage through the collection of the Tax on Circulation of Goods and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/06/2012
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4. Invasão de fluidos de perfuração e fluxo reverso de óleo em reservatórios de arenito e de carbonato / Invasion of drilling fluids and oil backflow in sandstone and carbonate reservoirs
As recentes descobertas do pré-sal no Brasil trouxeram novos desafios para as atividades de explotação de petróleo. Perfuração em formações carbonáticas apresentam grandes diferenças em relação a perfurações em rochas areníticas. Enquanto arenitos são mais homogeneos, rochas carbonáticas podem apresentar significativas variações em relaç�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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5. In silico identification of known osmotic stress responsive genes from Arabidopsis in soybean and Medicago
Plants experience various environmental stresses, but tolerance to these adverse conditions is a very complex phenomenon. The present research aimed to evaluate a set of genes involved in osmotic response, comparing soybean and medicago with the well-described Arabidopsis thaliana model plant. Based on 103 Arabidopsis proteins from 27 categories of osmotic s
Genetics and Molecular Biology. Publicado em: 2012
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6. Avaliação da resistência à compressão e da absorção de água de concretos utilizados após o tempo máximo de mistura e transporte especificado pela NBR 7212 / Evaluation of compressive strength and water absorption of concrete used after the maximum time of mixing and transport specified by NBR 7212
The Brazilian standard NBR 7212 (ABNT, 1984), for execution of ready-mixed concrete, specifies the maximum time for concrete to be discharged (used) completely in 150 minutes. The usage time of the concrete is due to reactions of the cement hydration and slump loss that occurs with fresh concrete, a normal phenomenon defined as the loss of fluidity along the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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7. ProposiÃÃo de modelo para escolha de rotas urbanas acessÃveis considerando-se os critÃrios de microacessibilidade para as pessoas com deficiÃncia fÃsica motora / Proposal of model for choice of accessible urban routes considering the criteria of microaccessibility to people with physical deficiency motor
The present study is about the accessibility of the transport not-motorized, as walk, having considered criteria established from the concept of Universal Design. In the literature revision, a new referencial theoretical was found and used later as a starting point for the formulation of a method. This was capable to allow the proposal of accessible minimum
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/11/2011
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8. Estudo dos fenômenos de transporte em cromatografia através da aplicação de modelos de rede e estocásticos / Study of transport phenomena in chromatography by application of network and stochastic models
The study of different phenomena of separation has been most important for the different areas of industry and science. Due to the large computational available, we can model and analyze the chromatographic phenomena at the microscopic level. The network model has been most used to represent processes of separation by chromatography, because through them we
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/05/2011
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9. Modelling chloride penetration in concrete using electrical voltage and current approaches
This paper reports a research programme aimed at giving a better understanding of the phenomena involved in the chloride penetration in cement-based materials. The general approach used was to solve the Nernst-Planck equation numerically for two physical ideal states that define the possible conditions under which chlorides will move through concrete. These
Materials Research. Publicado em: 04/03/2011
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10. Density currents at steady regime
This work brings as its main contribution the study of the phenomenon of density currents in non-stratified reservoirs, with flows in steady regimes. Flows are analyzed for a wide range of Reynolds and Richardson numbers in the entrance of the reservoir. Based on this hypothesis, a hybrid numeric model is presented considering the Reynolds Transport's Equati
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-09
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11. Andreev transport in double quantum dots coupled to superconductor and ferromagnetic leads / Transporte por reflexão de Andreev em pontos quanticos duplos acoplados a eletrodos supercondutores e ferromagneticos
In this work we studied the quantum transport in two hybrid nanostructures composed of double quantum dots (DQD)s coupled to superconductor (S) and ferromagnetic (F) leads. The first nanostructure, denoted by F - QDa - QDb - S, is composed of a ferromagnet, two quantum dots, and a superconductor connected in series. In the second nanostructure, denoted by (
Publicado em: 2010
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12. Variabilidade subinercial das correntes na plataforma continental ao largo de Cabo Frio (RJ): observações / Subtidal variability of the currents on the continental shelf off Cabo Frio (RJ): observations
This work was developed within the context of the continental shelf hydrodynamics, with the aim of studying the subtidal variability of the currents in the far north of the South Brazil Bight (SBB). The area of the study is located in the vicinity of Cabo Frio (RJ) and Arraial do Cabo (RJ) (approximately 23º S / 42º W). Despite being a well known and studi
Publicado em: 2010