Fluidity
Mostrando 1-12 de 370 artigos, teses e dissertações.
-
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
-
2. Sedimentation and rheological behavior of reactive and non-reactive magnesium hydroxide pulps for industrial spray dryer processing
Abstract Two different reactive concentrated magnesium hydroxide (HM) pulps, produced in a lab reactor mill, and a synthetic and non-reactive HM-pulp, for comparative analyses, have been prepared and studied. Sodium polyacrylate was selected as a dispersant for improving the HM pulp fluidity, with concentrations varying from 0.42% to 2.0% on a dry basis. The
Cerâmica. Publicado em: 2023
-
3. Effects of plaster to water ratio on physical and mechanical properties of ceramic pieces produced by the slip casting process
Abstract In the slip casting process, the relationship between the amount of plaster and water used in the production of molds influences the production of ceramic materials, because the higher the water content in the mixture, the lower the mechanical strength of the mold and higher the water absorption rate. In order to evaluate the influence of the variat
Cerâmica. Publicado em: 2022
-
4. Possible Effects of Oriented Magnetic Fields on Human Blood Pressure
Abstract Background: There have been scattered reports indicating the possibility that applied magnetic fields can lower human blood viscosity, which has been considered as encouraging for decreasing blood pressure as a result of greater fluidity. Additional motivation comes from partial studies in animals showing some response of vascular variables to magn
International Journal of Cardiovascular Sciences. Publicado em: 2022
-
5. Nordeste flagelado pelos nazistas
Abstract This article presents bijaa (balanta mané) narratives on settlement, identities and territorial divisions of the ajaa country on the southern shore of the Cacheu river (Guinea-Bissau) and in Balantakunda (Senegal). Both oral sources and primary written documents can be integrated to show continuity in traditions since the 17th century, beginning wi
Varia hist.. Publicado em: 2020-08
-
6. “Le loup dans la bergerie”: Narrations et identités des Bijaa, sujets conquéreurs de l’ancien royaume de Kasa en Sénégambie. Hommage à Stephan Bühnen (1950-2015)
Abstract This article presents bijaa (balanta mané) narratives on settlement, identities and territorial divisions of the ajaa country on the southern shore of the Cacheu river (Guinea-Bissau) and in Balantakunda (Senegal). Both oral sources and primary written documents can be integrated to show continuity in traditions since the 17th century, beginning wi
Varia hist.. Publicado em: 2020-08
-
7. Tadalafil-loaded PLGA microspheres for pulmonary administration: preparation and evaluation
Tadalafil, a long-acting PED-5 inhibitor, is commonly used for the treatment of pulmonary arterial hypertension (PAH). However, its efficacy and clinical application are severely limited by the poor water solubility, low bioavailability and a series adverse effects (e.g. headaches, indigestion). In this study, tadalafil was prepared and loaded into biodegrad
Braz. J. Pharm. Sci.. Publicado em: 20/12/2019
-
8. Experimental investigation on shear resistance of self-consolidating concrete beams
Resumo O concreto autoadensável se destaca pela alta fluidez e estabilidade, sendo estas propriedades obtidas com a redução da granulometria e volume de agregado graúdo da mistura, adição de materiais finos e a utilização de aditivos superplastificantes e modificadores de viscosidade. Um programa experimental foi realizado para avaliar a influência
Rev. IBRACON Estrut. Mater.. Publicado em: 13/12/2019
-
9. 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
-
10. Educação linguística na liquidez da sociedade do cansaço: o potencial decolonial da perspectiva translíngue
RESUMO Este artigo explora possibilidades de articulação entre os fundamentos da orientação translíngue e o pensamento decolonial. São inicialmente discutidas as principais características da sociedade contemporânea, sob a ótica de sua condição líquida e pós-disciplinar, bem como suas implicações para as relações humanas e para a educação
DELTA. Publicado em: 02/12/2019
-
11. A study about the characteristics of the contemporary parental exercise and care network
Resumo Diante das transformações que ocorreram no funcionamento das famílias contemporâneas, o presente estudo propõe uma investigação acerca de como casais heterossexuais compreendem e exercem a parentalidade, e de como lidam com a rede de cuidados. A pesquisa, de metodologia qualitativa, entrevistou oito casais, assim como os pediatras e coordenador
Estud. psicol. (Campinas). Publicado em: 28/10/2019
-
12. 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