Results 311 to 320 of about 740,706 (356)

Thrombus Formation at High Shear Rates

Annual Review of Biomedical Engineering, 2017
The final common pathway in myocardial infarction and ischemic stroke is occlusion of blood flow from a thrombus forming under high shear rates in arteries. A high-shear thrombus forms rapidly and is distinct from the slow formation of coagulation that occurs in stagnant blood.
Lauren D C, Casa, David N, Ku
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Effect of shear rate on the rate of polymerization of styrene

Polymer, 1983
Abstract Application of shear was found to have considerable effect on the radical polymerization of styrene initiated by benzoyl peroxide. The initial rate of polymerization decreases by as much as 30% for low shear rates (γ), but on further increasing γ it increases slightly, levelling ultimately at the 10% reduction level.
Anil Kumar, Santosh K Gupta, Ashok Kumar
openaire   +1 more source

Influence of Rate of Shear on Shearing Strength of Lead

Journal of Fluids Engineering, 1934
Abstract For many years the relationship between the velocity of deformation and the resulting stress has been occupying the attention of several investigators. In general, the tests have been made under uniform tensile- or compressive-stress conditions.
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Rubber Plastimeter with Uniform Rate of Shear - Shearing-Cone Plastimeter

Journal of Scientific Instruments, 1945
Abstract A new shearing-cone plastometer, suitable for investigating the plastic-flow relations of highly viscous materials over a wide range of stress, is described. A mushroom-shaped rotor, having upper and lower surfaces of conical type, is rotated in the plastic material contained in a cylindrical mould.
G. H. Piper, J. R. Scott
openaire   +1 more source

Effect of shear rate on microstructure and rheological properties of sheared wheat doughs

Journal of Cereal Science, 2008
Abstract Structure formation in dough systems is the result of an interplay between processing conditions and subsequent interactions in the protein phase. These interactions can be both of a covalent (disulfide bonds) and physical nature and occur at all length scales.
Peressini, D., Peighambardoust, S.H., Hamer, R.J., Sensidoni, A., van der Goot, A.J.   +4 more
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Shear-Rate Nonanalyticity in Simple Liquids

Journal of Non-Equilibrium Thermodynamics, 1987
A non-equilibrium thermodynamic theory of shear relaxation in a small subvolume of a simple liquid introduces the volume, temperature, particle number, traceless elastic shearing strain \(\sigma^{\dag}_{ij}\), and the volume fraction \(\zeta\), of locally-dilated spherical regions as internal state variables.
openaire   +2 more sources

Relationship of Viscosity to Rate of Shear

Journal of Fluids Engineering, 1941
Abstract This paper reports tests designed to check the validity of the assumption that lubricating oils belong to the class of a Newtonian fluid, which is defined as one in which the force required to shear it is directly proportional to the rate of shear.
L. J. Bradford, F. J. Villforth
openaire   +1 more source

High shear rate viscometry

Rheologica Acta, 2008
We investigate the use of two distinct and complementary approaches in measuring the viscometric properties of low viscosity complex fluids at high shear rates up to 80,000 s−1. Firstly, we adapt commercial controlled-stress and controlled-rate rheometers to access elevated shear rates by using parallel-plate fixtures with very small gap settings (down
Christopher J. Pipe, Trushant S. Majmudar, Gareth H. McKinley   +2 more
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Determination of the shear stress-shear rate relation for blood by Couette viscometry

Biorheology, 1971
Determination with a Couette viscometer of the shear stress-shear rate relation for a non-Newtonian fluid is not simple because of the variation of shear rate within the viscometer gap. Exact methods for calculation of the shear rate have been presented by Krieger and Elrod, but they require extensive manipulation of the viscometric data.
A M, Benis, S, Usami, S, Chien
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Viscosity as a function of shear rate

Journal of Polymer Science Part B: Polymer Letters, 1968
Abstract : A paper is presented in which polymer viscosity is derived as a function of rate of shear. The basic idea introduced is that the polymer attains a limiting strain in the melt viscosity instrument. This limiting strain is perhaps a breaking strain. (Author)
A. V. Tobolsky, L. L. Chapoy
openaire   +1 more source