Gravitational Sedimentation
Mostrando 1-9 de 9 artigos, teses e dissertações.
-
1. EFFECT OF WATER CONTENT, TEMPERATURE AND AVERAGE DROPLET SIZE ON THE SETTLING VELOCITY OF WATER-IN-OIL EMULSIONS
AbstractWater-in-oil (W/O) emulsions are complex mixtures generally found in crude oil production in reservoirs and processing equipment. Sedimentation studies of water-oil emulsions enable the analysis of the fluid dynamic behavior concerning separation of this system composed of two immiscible liquids. Gravitational settling was evaluated in this article f
Braz. J. Chem. Eng.. Publicado em: 2015-06
-
2. Tectônica e sedimentação do Grupo Jacadigo (Neoproterozóico, MS) / Tectonics and sedimentation of Jacadigo Group (Neoproterozoic, MS)
At the south of Corumbá, Mato Grosso do Sul state, there are huge topographic elevations made of Jacadigo Groups neoproterozoic sedimentary deposits. Those mountains are known as Maciço do Urucum. The basal unit named Urucum Formation is composed by siliciclastic rocks with maximum thickness of 200 to 300m. The sucession continues with mixed GIF (granular
Publicado em: 2010
-
3. Analise de facies e modelo paleodeposicional da plataforma siliciclastica ordoviciana da Pre-Cordilheira Argentina / Facies analisys and paleodepositional model of the ordovician siliciclastic shelf of the Argentine Precordillera
This work consists in the study of sedimentological and paleodepositional features of four Ordovician lithostratigraphic units of the Precordillera Argentina: Portezuelo del Tontal Formation (PTF), Sierra de La Invernada Formation (SIF), Gualcamayo Formation (GF) and Los Azules Formation (LAF). The PTF is represented by alternating fine- to very fine grained
Publicado em: 2009
-
4. Sismoestratigrafia do cretÃceo superior/ neÃgeno nas bacias de Pernambuco e da ParaÃba, NE do Brasil
This work presents the mapping of seismic sequences from the albian portion of the offshore basins of Pernambuco and Paraiba embasado in individualizaÃÃes of fÃcies and interpretation of seismic maps of isÃcronas. In Basin of Pernambuco were mapped four disagreements and four sequences (A, B, C, D), the basin of Paraiba has three disagreements, a surface
Publicado em: 2008
-
5. Uma contribuiÃÃo ao estudo da sedimentaÃÃo gravitacional em batelada
Thickeners are equipments that uses the gravitational force as separating agent of suspended solid particle in liquid chains of industrial processes. The frequent use of the settlers in chemical industries is the reason of the interest on the development of studies on the subject. The batch sedimentation is the starting point for the project of continuous in
Publicado em: 2007
-
6. Mathematical modeling of the head loss and of the turbidity and particles removal in up flow direct filtration / Modelação matemática da perda de carga e da remoção de turbidez e de partículas na filtração direta ascendente
Este trabalho propõe a modelação matemática da perda de carga e da remoção de turbidez e de partículas na filtração direta ascendente baseada nos modelos que descrevem macroscopicamente o processo de filtração. Os modelos incluem o mecanismo de desprendimento de partículas do meio filtrante e a alteração da porosidade do material retido durante
Publicado em: 2007
-
7. Equilibrio de osmossedimentação sob-gravidade : polidispersões aquosas de prata
This thesis shows results obtained from theoretical and experimental work on osmosedimentation of silver sols under gravity. The osmosedimentation velocity is shown to be strongly dependent on sol concentration and cell geometry. The results show the existence of a osmosedimentation equilibrium state. In this state, the particle distribution along the cells,
Publicado em: 1983
-
8. Bacterial swimming and oxygen transport near contact lines
Aerobic bacteria often live in thin fluid layers near solid–air–water contact lines, in which the biology of chemotaxis, metabolism, and cell–cell signaling is intimately connected to the physics of buoyancy, diffusion, and mixing. Using the geometry of a sessile drop, we demonstrate in suspensions of Bacillus subtilis the self-organized generation of
National Academy of Sciences.
-
9. ESR studies of spin-labeled membranes aligned by isopotential spin-dry ultracentrifugation: lipid-protein interactions.
Electron spin resonance (ESR) studies have been performed on spin-labeled model membranes aligned using the isopotential spin-dry ultracentrifugation (ISDU) method of Clark and Rothschild. This method relies on sedimentation of the membrane fragments onto a gravitational isopotential surface with simultaneous evaporation of the solvent in a vacuum ultracentr