Fluidity Point
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Influence of Refinery Asphalt Residue Addition on Flow: A Study Using Waxy Model-System
One of the main phenomena causing problems in the oil industry is the precipitation of waxes, which can crystallize and form deposits, clogging lines and reducing flows. Many studies have been conducted seeking to overcome this problem, mainly through application of chemical to increase flow. Some studies have shown that the asphaltenes present in crude oil
Journal of the Brazilian Chemical Society. Publicado em: 2023
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2. DUAS NARRATIVAS PARA O LUGAR DOS INDÍGENAS NAS ORIGENS DA NAÇÃO: A HISTÓRIA FICCIONAL DE MAGALHÃES E ALENCAR
RESUMO História e literatura exprimem sentidos ao mundo social por meio de narrativas que subsidiam a investigação histórica, com pistas fragmentárias de suas redes de interlocução social e intertextual. Em consonância com esses pressupostos teórico-metodológicos, este artigo analisa o indianismo preconizado pelo Romantismo brasileiro, por meio do
Almanack. Publicado em: 13/12/2019
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3. Compatibility of GROMOS-Derived Atomic Parameters for Lipopolysaccharide Membranes with the SPC/E Water Model and Alternative Long-Range Electrostatic Treatments Using Single Nonbonded Cutoff and Atom-Based Charge Schemes
Recent developments of GROMACS v.2016 ceased to support methodological approaches used in the development and validation of the GROMOS force field. We investigated the performance of a previously developed extension of the GROMOS force field for lipopolysaccharides to reproduce the structural dynamics of bacterial outer membrane (OM) using a single cutoff fo
J. Braz. Chem. Soc.. Publicado em: 21/10/2019
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4. Avaliação do grau de orientação de fibras de aço induzida na moldagem de elementos planos com concreto autoadensável
RESUMO O uso de concreto autoadensável (CAA) aliado ao concreto reforçado com fibras (CRF) tem sido objeto de várias pesquisas recentes. A combinação da fluidez do CAA com o uso de fibras aumenta a probabilidade de que, no processo de lançamento, seja possível causar orientação preferencial nas fibras, inclusive em elementos planos. Isto pode ser be
Matéria (Rio J.). Publicado em: 10/06/2019
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5. Analysis of Secondary Refining Slag Parameters with Focus on Inclusion Cleanliness
Secondary refining slag samples with different chemical compositions (45-54 % CaO, 7-13 % Al2O3, 20-29 % SiO2, 9-16 % MgO, 0-5 % CaF2) were investigated to verify the influence of their effective viscosity on inclusion cleanliness of DIN 38MnS6 in a steelmaking plant. The steel samples were collected during the production process for analysis of inclusions.
Mat. Res.. Publicado em: 02/08/2018
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6. Mechanical Properties Analysis of Polypropylene Biocomposites Reinforced with Curaua Fiber
Over the last few years, great interest has been shown by researchers in presenting alternative proposals for the design and fabrication of materials with good mechanical properties and low cost for a variety of applications. With this in mind, a study was carried out on the addition of curaua fibers in a polypropylene (PP) matrix. These were extruded in the
Mat. Res.. Publicado em: 2015-08
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7. A REPRESENTAÇÃO DISCURSIVA DA IRMANDADE NA FRONTEIRA JAGUARÃO/RIO BRANCO: UM (DES)ENCONTRO DE VOZES / THE DISCURSIVE REPRESENTATION OF BROTHERHOOD IN THE BORDER JAGUARÃO/RIO BRANCO: A (MIS) MEETING OF VOICES
Historically, the border Brazil / Uruguay was marked by strong conflicts between Portuguese and Spanish, who fought by the occupation of the territory. These conflicts eventually split geographically and culturally the two Iberian nations involved. From this set of dispute, lived in the eighteenth and nineteenth centuries, this research looks for the identit
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/04/2012
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8. Por um conhecimento transdisciplinar: reflexões, trilhas e entraves / Towards a Transdisciplinary Knowledge: reflections, tracks and obstacles.
The aim of this work is to discuss the theme of knowledges production and diffusion by emphasizing, firstly, its epistemological limits (mechanistic and Cartesian paradigm) and, secondly, the richness of some inter- and transdisciplinary proposals, which, based upon different perspectives, have pointed out the necessity of redefining the disciplinary boundar
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/12/2011
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9. Effect of temperature on the level of corrosion caused by heavy petroleum on AISI 304 and AISI 444 stainless steel
This work presents a study on the influence of national heavy petroleum in the corrosion of the AISI 444 and AISI 304 stainless steels in simulated refining operation conditions. The petroleum was first characterized through physicochemical analysis (density, fluidity point, viscosity, sulfur concentration). In an attempt to understand the corrosion effect o
Materials Research. Publicado em: 2006-06
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10. Pensamento e produção de subjetividade: problematizações entre a clínica e a política
The present paper eagers to study the problematic field that involves thought and production of subjectivity and their implications for the plans of the clinic and the politics, taken here in one exact circuit of multiple interferences. The research follows a theoreticianconceptual orientation and it is distributed among three moments. In the initial phase,
Publicado em: 2006
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11. Caracterização fisica e secagem do acido 2-hidroxibenzoico em leito fluidizado agitado mecanicamente em leito fluidizado pulsado rotativo
This work has as primal objective the study of the viability of the use of two modified fluidized beds, the mechanically agitated fluidized bed and the rotated pulsed fluidized bed, in the drying of 2-hydroxibenzoic acid. Physical characterization analyses of the solid were conducted in order to provide useful information for the study of the drying process,
Publicado em: 2003
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12. MODELLING THE RHEOLOGICAL BEHAVIOR OF PARAFFINIC OILS AT TEMPERATURES NEAR AND BELOW ITS FLUIDITY POINT / MODELAGEM DO COMPORTAMENTO REOLÓGICO DE ÓLEOS PARAFÍNICOS A TEMPERATURAS PRÓXIMAS E ABAIXO DE SEU PONTO DE FLUIDEZ
Neste trabalho é desenvolvido um modelo constitutivo para representar o comportamento reológico complexo apresentado pelos petróleos parafinicos, na faixa de temperaturas em que estes tendem a se solidificar, em virtude do aprisionamento da fase líquida na rede cristalina formada pela parafina que daí da solução. São considerados os efeitos de memór
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/1988