Results 261 to 270 of about 91,178 (304)

Influence of Viscosity Variation on the Rupture of Plastic Bodies

open access: yesNature, 1935
THE term viscosity has frequently been used in a qualitative sense in describing the properties of solids and particularly of metals, but its use in the quantitative sense which has been developed through the study of liquids is a comparatively recent development.
R. K. SCHOFIELD, G. W. SCOTT BLAIR
openaire   +2 more sources

Variation of the apparent viscosity of thickened drinks

International Journal of Language & Communication Disorders, 2010
In dysphagia care, thickening powders are widely added to drinks to slow their flow speed by increasing their viscosity. Current practice relies on subjective evaluation of viscosity using verbal descriptors. Several brands of thickener are available, with differences in constituent ingredients and instructions for use.
Mark, O'Leary   +2 more
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Viscosity variation in hydrostatic bearings

Tribology, 1972
Abstract Bearings which operate in extreme environments may incur problems due to: 1 - ambient temperature rise, from cold starting to normal running; 2 - temperature difference between the control system and the bearing. Several problems and the effects of the consequent viscosity variations are discussed, and some conclusions are reached concerning
W.B. Rowe, K.J. Stout
openaire   +1 more source

The variation of viscosity with temperature

Physics Education, 1977
A brief account of observed facts concerning the effect of temperature on viscosity, and how these facts may be interpreted is presented. The principal observed qualitative facts are as follows: (1) All gases at ordinary pressure become more viscous as the temperature is raised. (2) Most liquids become less viscous as the temperature is raised.
openaire   +1 more source

Studies on the variation in the viscosity of bronchial mucus and a technique for reducing such variation

Biorheology, 1974
Rotational viscometry has been used to obtain rheograms and shear stress decay curves for bronchial mucus at 37°C and 100 per cent r.h. Statistical analysis of parameters derived from the latter curves indicated the marked variation between samples.
C, Marriott, J H, Richards
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The temperature variation of the coefficient of magnetic viscosity

Journal of Magnetism and Magnetic Materials, 1986
Abstract In this paper data are presented which show the variation of the time dependence coefficient ‘A’ ( =d I /dln t , I / I s ) for a fine particle system with temperature. Theory is also presented which provides a good fit to the experimental data.
K. O'Grady, R.W. Chantrell
openaire   +1 more source

Thermal convection with large viscosity variations

Journal of Fluid Mechanics, 1971
The influence of large variations of viscosity on convection in a layer of fluid heated from below has been investigated. Solutions for the flow and temperature fields were obtained numerically assuming infinite Prandtl number, free-surface boundary conditions, and two-dimensional motion of fixed horizontal wavelength.
K. E. Torrance, D. L. Turcotte
openaire   +1 more source

The variation of carrier gas viscosities with temperature

Journal of High Resolution Chromatography, 1997
AbstractAfter describing simplified equations exspressing the temparature dependency of the viscosity of carrier gases (helium, nitrogen and hydrogen ) relative to a base value, absolute relationships based on the kinetic theory of gases are discussed.
John V. Hinshaw, Leslie S. Ettre
openaire   +1 more source

TEMPERATURE INDUCED VISCOSITY VARIATION IN A POLYMERIC FLOW

International Communications in Heat and Mass Transfer, 2002
The object of this study is to explore the local viscosity variations induced by temperature gradient in a polymeric (viscoelastic) flow. The flow is in a circular contraction geometry and temperature gradients are due to imposed heating and cooling through the walls of the flow geometry.
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XXVII. The variation of viscosity of liquids with temperature

The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1942
(1942). XXVII. The variation of viscosity of liquids with temperature. The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science: Vol. 33, No. 219, pp. 258-271.
M.K. Srinivasan, B. Prasad
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