Anomalous viscosity transition of solid He-4 in nanodomains

2017 ◽  
Vol 474 ◽  
pp. 363-369
Author(s):  
Chu Rainer Kwang-Hua
Keyword(s):  
Anomalous Viscosity ◽  
Solid He

Liquid Disorder Effects on the Solid He II Kapitza Resistance

1974 ◽  
pp. 393-397 ◽  
Author(s):  
C. Linnet ◽  
T. H. K. Frederking ◽  
R. C. Amar
Keyword(s):  
Kapitza Resistance ◽  
Disorder Effects ◽  
Solid He

scholarly journals STUDIES ON THE ANOMALOUS VISCOSITY AND FLOW-BIREFRINGENCE OF PROTEIN SOLUTIONS

1944 ◽  
Vol 27 (3) ◽  
pp. 233-271 ◽  
Author(s):  
A. S. C. Lawrence ◽  
Margaret Miall ◽  
Joseph Needham ◽  
Shih-Chang Shen
Keyword(s):  
Film Flow ◽  
Surface Film ◽  
Mosaic Disease ◽  
Flow Birefringence ◽  
Bulk Phase ◽  
Protein Solutions ◽  
Amphibian Embryo ◽  
Anomalous Viscosity ◽  
Group A ◽  
Group B

1. An extensive investigation has been made of protein particle shape using the methods of flow-birefringence and anomalous viscosity measurement in the coaxial cell. 2. As a result of investigations on a number of proteins, it is concluded that they may be divided into four groups. Group A consists of those which show flow-anomaly both in the bulk phase and in the surface film. These also show flow-birefringence in the bulk phase. Examples: tobacco mosaic disease virus nucleoprotein; myosin. Though corpuscular proteins, they have elongated particles before denaturation. Group B consists of those which show flow-anomaly only (in the first instance) in the surface film, and no flow-birefringence in the bulk phase. They are probably close to spherical in shape in solution, but form elongated particles as they denature in the surface film. After this process has been completed, they may show flow-anomaly also in the bulk phase. Some proteins show flow-anomaly in the surface film immediately it forms, others only show it after a certain time has elapsed for the building up of the film. We designate the former as group B1 and the latter as group B2. Group B1, immediate surface film flow-anomaly. Examples: serum euglobulin, amphibian embryo euglobulin b. Group B2, slowly appearing surface film flow-anomaly. After the film has once been fully formed and then dispersed by shaking, the solution may have the properties of that of a protein in group B1; i.e., anomalous flow in the film may occur immediately on testing in the viscosimeter. Examples: avian ovalbumin, amphibian embryo pseudoglobulin. Group C consists of those proteins which show flow-anomaly neither in the bulk phase nor in the surface film, under the conditions used by us. They are probably close to spherical in shape. Examples: insulin, methaemoglobin, amphibian embryo euglobulin c, mucoproteins. 3. The theoretical significance of protein fibre molecules, whether native or formed by denaturation in the living cell, is discussed, especially in relation to experimental morphology and cytology.

Anomalous viscosity behavior of polymer solutions at very low concentrations

1957 ◽  
Vol 26 (113) ◽  
pp. 213-226 ◽  
Author(s):  
Tōru Kawai ◽  
Kazuhisa Saito ◽  
W. R. Krigbaum
Keyword(s):  
Polymer Solutions ◽  
Anomalous Viscosity ◽  
Viscosity Behavior ◽  
Low Concentrations

Anomalous Viscosity of Critical Mixtures and Its Dependence on Velocity Gradient

1968 ◽  
Vol 48 (12) ◽  
pp. 5326-5329 ◽  
Author(s):  
Robert Sallavanti ◽  
Marshall Fixman
Keyword(s):  
Velocity Gradient ◽  
Anomalous Viscosity

Partially miscible liquid systems: The density, change of volume on mixing, vapor pressure, surface tension, and viscosity in the system: aniline–hexane

1968 ◽  
Vol 46 (14) ◽  
pp. 2399-2407 ◽  
Author(s):  
A. N. Campbell ◽  
E. M. Kartzmark ◽  
S. C. Anand ◽  
Y. Cheng ◽  
H. P. Dzikowski ◽  
...  
Keyword(s):  
Surface Tension ◽  
Vapor Pressure ◽  
Chemical Potential ◽  
Density Change ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Pressure Surface ◽  
Anomalous Viscosity ◽  
Tension Properties ◽  
Liquid Systems

The following properties have been investigated experimentally: density, change of volume on mixing, vapor pressure, surface tension, and viscosity, at temperatures above and below the critical solution temperature. The question at issue is: How does the chemical potential, or any property dependent on chemical potential, change, at constant temperature, over a range of composition, just above the critical solution temperature? In the present case, the vapor pressure and surface tension, properties directly dependent on chemical potential, are constant within the range of experimental accuracy (which, however, may not be sufficient) over a range of concentration. The viscosity is complicated by the occurrence of anomalous viscosity. The change of volume on mixing is negative, and this is usually associated with compound formation. In all other systems investigated by us, except the system triethylamine–water, ΔV is positive. We have shown elsewhere, however, that a very stable chemical compound is formed between water and triethylamine.

scholarly journals Positron annihilation in simple condensed gases

1990 ◽  
Vol 68 (12) ◽  
pp. 1362-1376 ◽  
Author(s):  
A. T. Stewart ◽  
C. V. Briscoe ◽  
J. J. Steinbacher
Keyword(s):  
Positron Annihilation ◽  
Reasonable Agreement ◽  
Theoretical Calculations ◽  
Bubble Formation ◽  
The Self ◽  
Correlation Technique ◽  
Potential Well ◽  
Well Model ◽  
Adequate Data ◽  
Solid He

The angular-correlation technique of positron annihilation has been used to detect and measure the localized bubble state of positronium (Ps) in liquid Ne, Ar, Kr, H2, and N2 and in liquid and solid He at various pressures and temperatures. No bubble state was seen in liquid O2 or in solid Ne and Ar. The dynamics of bubble formation is not yet understood. In the cases where theoretical calculations, and adequate data, exist, viz. He, Ar, and H2, there is reasonable agreement for the momentum of the photons from the annihilation of positrons with the outer electrons of these atoms. The Ps annihilations from the self-trapped bubble state are reasonably well described in terms of a simple finite potential-well model.

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