scholarly journals PRESSURE DEPENDENCE OF THE LOW TEMPERATURE ACOUSTIC ANOMALIES IN VITREOUS SILICA

1982 ◽  
Vol 43 (C9) ◽  
pp. C9-489-C9-492 ◽  
Author(s):  
U. Bartell ◽  
S. Hunklinger
Keyword(s):  
Low Temperature ◽  
Pressure Dependence ◽  
Vitreous Silica

scholarly journals The Unresolved Definition of The Pressure-Viscosity Coefficient

2021 ◽  
Author(s):  
Scott Bair
Keyword(s):  
High Temperature ◽  
Equation Of State ◽  
Low Temperature ◽  
Film Thickness ◽  
Pressure Dependence ◽  
Analytical Calculation ◽  
Elastohydrodynamic Lubrication ◽  
Viscosity Coefficient ◽  
Classical Approach ◽  
Definition Of

Abstract In the classical approach to elastohydrodynamic lubrication (EHL) a single parameter, the pressure-viscosity coefficient, quantifies the isothermal pressure dependence of the viscosity for use in prediction of film thickness. Many definitions are in current use. Progress toward a successful definition of this property has been hampered by the refusal of those working in classical EHL to acknowledge the existence of accurate measurements of the piezoviscous effect that have existed for nearly a century. The Hamrock and Dowson pressure-viscosity coefficient at high temperature requires knowledge of the piezoviscous response at pressures which exceed the inlet pressure and may exceed the Hertz pressure. The definition of pressure-viscosity coefficient and the assumed equation of state must limit the use of the classical formulas, including Hamrock and Dowson, to liquids with high Newtonian limit and to low temperature. Given that this problem has existed for at least fifty years without resolution, it is reasonable to conclude that there is no definition of pressure-viscosity coefficient that will quantify the piezoviscous response for an analytical calculation of EHL film thickness at temperatures above ambient.

Positron trapping by defects in vitreous silica at low temperature

1995 ◽  
Vol 7 (26) ◽  
pp. 5139-5149 ◽  
Author(s):  
A Uedono ◽  
T Kawano ◽  
S Tanigawa ◽  
A Urano ◽  
M Kyoto ◽  
...  
Keyword(s):  
Low Temperature ◽  
Vitreous Silica ◽  
Positron Trapping

Mechanisms and kinetics of the low-temperature oxidation of 2-methylfuran: insight from DFT calculations and kinetic simulations

2020 ◽  
Vol 22 (6) ◽  
pp. 3290-3303
Author(s):  
Yuanyuan Li ◽  
Zexing Cao
Keyword(s):  
Low Temperature ◽  
Dft Calculations ◽  
Pressure Dependence ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Temperature And Pressure ◽  
Kinetics Of

The profiles of the main products from the low-temperature oxidation of 2-MF show notable temperature and pressure dependence.

Pressure dependence of the low-temperature magnetic transition in α-Fe2O3

1966 ◽  
Vol 22 (4) ◽  
pp. 407-408 ◽  
Author(s):  
H. Umebayashi ◽  
B.C. Frazer ◽  
G. Shirane ◽  
W.B. Daniels
Keyword(s):  
Low Temperature ◽  
Pressure Dependence ◽  
Magnetic Transition
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