Results 301 to 310 of about 740,706 (356)
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Physical Review Letters, 2008
There are contradictory published data on the behavior of fluid slip at high shear rates. Using three methodologies (molecular dynamics simulations, an analytical theory of slip, and a Navier-Stokes-based calculation) covering a range of fluids (bead-spring liquids, polymer solutions, and ideal gas flows) we show that as shear rate increases, the ...
Ashlie, Martini +3 more
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There are contradictory published data on the behavior of fluid slip at high shear rates. Using three methodologies (molecular dynamics simulations, an analytical theory of slip, and a Navier-Stokes-based calculation) covering a range of fluids (bead-spring liquids, polymer solutions, and ideal gas flows) we show that as shear rate increases, the ...
Ashlie, Martini +3 more
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Rate of Shear Effects on Vane Shear Strength
Journal of Geotechnical Engineering, 1985A series of laboratory vane shear tests was performed on sedimented samples of kaolinite and slaked Pierre shale to determine the effects of shear rate and vane dimensions on measured strength. Results of the tests were expressed in terms of shear strength on a vertical plane and were plotted versus average shear rate.
Mohsen Sharifounnasab, C. Robert Ullrich
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Effect of shear rate on activation rate of factor X
Annals of Biomedical Engineering, 1978The activation rates of Factor X in the intrinsic coagulation pathway and by RVV were measured in the stationary condition in a concentric cylinder device in a shear field and in a capillary flow reactor. The shear rates in the cylinder device were 70 and 140 sec−1 and the range of the flow rate in the flow reactor was from 0.59 to 1.20 cm3/min.
S, Katoh, I, Matsubara, E, Sada
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The elasticity of sputum at low shear rates
Biorheology, 1974Elasticity of sputum. Elasticity of sputum has been determined using the Weissenberg rheogoniometer, by oscillatory testing, over frequencies from 0.01 to 0.8 c/s. Sputum was from patients with either asthma, chronic bronchitis, cystic fibrosis or bronchiectasis and, macroscopically, mucoid, mucopurulent or purulent.
P, Mitchell-Heggs, A J, Palfrey, L, Reid
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Hydrodynamic fluctuations at large shear rate
Physical Review A, 1985The nonlinear Navier-Stokes-Langevin equations are used to describe fluctuations in a compressible fluid with uniform shear flow. The hydrodynamic modes for small deviations from the macroscopic nonequilibrium state are calculated, including linear mode coupling of the fluctuating variables with the macroscopic velocity field.
Lutsko, James, Dufty, James
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Effects of shear rate on rouleau formation in simple shear flow
Biorheology, 1988A kinetic equation for rouleau formation in a simple shear flow is derived, based on several assumptions. These are (a) colliding rouleaux stick to one another with a certain probability to form a single rouleau; (b) simultaneous collisions between more than two rouleaux are negligible; (c) rouleaux are broken by a viscous force exerted by the ...
T, Murata, T W, Secomb
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Effects of Shear Rate and Protein Concentration on Amyloidogenesis via Interfacial Shear
The Journal of Physical Chemistry B, 2021The influence of hydrodynamics on protein fibrillization kinetics is relevant to biophysics, biochemical reactors, medicine, and disease. This investigation focused on the effects of interfacial shear on the fibrillization kinetics of insulin. Human insulin served as a model protein for studying shear-induced fibrillization with relevance to amyloid ...
Joe A. Adam +3 more
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Blood sedimentation at controlled shear rates
The Chemical Engineering Journal, 1977The sedimentation of dextranated human erythrocytes is found to be more reproducible in the presence of controlled shear than in conventional Westergren tubes. The induction period is also greatly reduced in length. It is suggested that the method could be used for measuring clinical ESR’s with greater precision and speed than is possible using current
N M, Vincent, D R, Oliver
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Respiration Physiology, 1973
Abstract Some order is brought into calculations of the shear rates found in the mucus layers of the lung due to ciliary activity. In the cilia sublayer shear rates of the order of 2π f sec −1 , where f is frequency of the cilium beat, are theoretically obtained.
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Abstract Some order is brought into calculations of the shear rates found in the mucus layers of the lung due to ciliary activity. In the cilia sublayer shear rates of the order of 2π f sec −1 , where f is frequency of the cilium beat, are theoretically obtained.
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A Jet Viscometer with Variable Rate of Shear
Review of Scientific Instruments, 1946A viscometer consisting of a glass jet which is inserted in a closed system is described. With this instrument high rates of shear of the order of magnitude of 100,000 sec.−1 can be reached for hydraulic oils. Observations on straight mineral oils of sufficiently high viscosity to exclude turbulence, on refined rape oil, and on castor oil, showed that ...
W J, MORRIS, R, SCHNURMANN
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