نتایج جستجو برای: viscosity of medium

تعداد نتایج: 21178224  

2015
Frida Fåk Greta Jakobsdottir Evelina Kulcinskaja Nittaya Marungruang Chrysoula Matziouridou Ulf Nilsson Henrik Stålbrand Margareta Nyman

The aim of this study was to investigate how physico-chemical properties of two dietary fibres, guar gum and pectin, affected weight gain, adiposity, lipid metabolism, short-chain fatty acid (SCFA) profiles and the gut microbiota in male Wistar rats fed either low- or high-fat diets for three weeks. Both pectin and guar gum reduced weight gain, adiposity, liver fat and blood glucose levels in r...

Journal: :iranian journal of science and technology (sciences) 2013
g. c. rana

in this paper, the combined effect of suspended (fine dust) particles and rotation on the onset of thermosolutal convection in an elastico-viscous fluid in a porous medium is studied. for the porous medium, the brinkman model is employed and rivlin-ericksen model is used to characterize viscoelastic fluid. by applying normal mode analysis method, the dispersion relation has been derived and sol...

2012
Anita Loof Nielsen Pernille Barbre Pedersen Stefania Baldursdottir Anette Müllertz

In order to simulate the in vivo dissolution of drugs, biorelevant dissolution media (BDM), simulating the gastric or intestinal juices are often employed. For gastric BDM, pH, surface tension and osmolality is simulated, however, viscosity has, to our knowledge not been taken into account. The dissolution rate of a drug compound is influenced by the viscosity of the dissolution medium. In the ...

Journal: :Journal of Physics G: Nuclear and Particle Physics 2017

2004
Sunil Pavan Kumar Bharti Divya Sharma R. C. Sharma

The effect of the magnetic field dependent (MFD) viscosity on the thermal convection in a ferromagnetic fluid in the presence of a uniform vertical magnetic field is considered for a fluid layer in a porous medium, heated from below. For a ferromagnetic fluid layer between two free boundaries an exact solution is obtained, using a linear stability analysis. For the case of stationary convection...

Journal: :The British journal of nutrition 1988
D L Topping D Oakenfull R P Trimble R J Illman

1. Adult male rats were maintained on diets containing 80 g methylcellulose/kg of low (25 cP), medium (400 cP) and high (1500 cP) viscosity. 2. After 10 d, the viscosity of stomach and caecal contents was found to have increased in proportion to that of the dietary fibre. Concentrations of volatile fatty acids in caecal digesta were lowest with the high-viscosity fibre but acetate was the major...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2011
Cláudio L N Oliveira José S Andrade Hans J Herrmann

We investigate the effect of a temperature gradient on oil recovery in a two-dimensional pore-network model. The oil viscosity depends on temperature as μ(o) [Please see text] e(B/T), where B is a physicochemical parameter, depending on the type of oil, and T is the temperature. A temperature gradient is applied across the medium in the flow direction. Initially, the porous medium is saturated ...

The present investigation draws scholars' attention to the effect of exponential variable viscosity modeled by Vogel and variable permeability on stagnation point flow of Carreau Nanofluid over an electromagnetic plate through a porous medium. Brownian motion and thermophoretic diffusion mechanism are taken into consideration. An efficient fourth-order RK method along with shooting technique ar...

2007
JOSEPHUS HULSHOF JUAN LUIS VAZQUEZ

We construct a theory for maximal viscosity solutions of the Cauchy problem for the modiied porous medium equation u t + ju t j = (u m), with 2 (?1; 1) and m > 1. We investigate the existence, uniqueness, nite propagation and optimal regularity of these solutions. As a second main theme we prove that the asymptotic behaviour is given by a certain family of self-similar solutions of the so-calle...

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