Results 271 to 280 of about 11,940,393 (348)
Advanced Functional Materials, EarlyView.Sustainable films with heterosymmetric structures, harmoniously integrating symmetry and asymmetry, are fabricated using cellulose nanocrystals and hydrophilic nanolignin via evaporation‐induced self‐assembly, which exhibit excellent multiple polarization optical properties.
Qun Song +7 more
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High Shear Rate Hemofiltration: Influence of Fiber Dimensions and Shear Rates
Artificial Organs, 1989Abstract: The variation of ultrafiltration flow rate (QF) at high transmembrane pressure with inlet wall shear rate (γW) was found to be proportional to γW, with n ranging from 0.45 to 0.55, when γW increases up to 4,500 s‐1. To test whether long filters operated at high shear rates were more efficient than shorter ones for the same inlet blood flow ...
Michel Y. Jaffrin +2 more
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Viscosity as a function of shear rate [PDF]
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)
L. L. Chapoy, Arthur V. Tobolsky
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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.
C. Robert Ullrich, Mohsen Sharifounnasab
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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
Trushant S. Majmudar +2 more
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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
Trushant S. Majmudar +2 more
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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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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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Objective corotational rates and shear oscillation
International Journal of Plasticity, 1992Influence of objective corotational rates to shear oscillation is discussed here under the framework of finite deformation, \(J_ 2\)-flow theory. Under an elastic-plastic, mixed hardening constitutive law, the active stress \(s\) and back stress \(b\) are shown to be governed by two sets of equations formally uncoupled to each other.
Wei Yang, Li Cheng, Keh-Chih Hwang
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