Temperature and pressure coefficients of iron resonant impurity level in PbTe

2017 ◽  
Vol 121 (4) ◽  
pp. 045702 ◽  
Author(s):  
E. P. Skipetrov ◽  
O. V. Kruleveckaya ◽  
L. A. Skipetrova ◽  
V. E. Slynko
Keyword(s):  
Impurity Level ◽  
Pressure Coefficients ◽  
Temperature And Pressure

Equilibrium model for the interpretation of the conduction properties of metal–ammonia solutions

1977 ◽  
Vol 55 (11) ◽  
pp. 2211-2216 ◽  
Author(s):  
S. Hahne ◽  
P. Krebs ◽  
U. Schindewolf
Keyword(s):  
Electrical Conductivity ◽  
Pressure Range ◽  
High Mobility ◽  
Solvation Number ◽  
Free Electrons ◽  
Solvated Electrons ◽  
Entire Concentration Range ◽  
Pressure Coefficients ◽  
Temperature And Pressure ◽  
Conduction Properties

The electrical conductivity of metal–ammonia solutions can be described by an equilibrium of solvated electrons of low mobility and of free electrons of high mobility. With proper choice of the equilibrium constant and its temperature and pressure dependence and of the solvation number of the solvated species the experimental conductivities can be matched in the temperature and pressure range from 240 to 420 K and up to 1000 bar over the entire concentration range from 0.1 mol/ℓ to saturation, also fitting the extrema of the temperature and pressure coefficients of the conductivity around 1 mol/ℓ.

Polymerization Reactions under high Pressure. I. Some Experiments with Isoprene and Butyraldehyde

1930 ◽  
Vol 3 (3) ◽  
pp. 472-482
Author(s):  
J. B. Conant ◽  
C. O. Tongberg
Keyword(s):  
High Pressure ◽  
Room Temperature ◽  
High Pressures ◽  
Order Reaction ◽  
Pressure Coefficients ◽  
First Order ◽  
Rate Of Polymerization ◽  
Energy Relationships ◽  
Temperature And Pressure ◽  
Autocatalytic Effect

Abstract 1. The rate of polymerization of isoprene under high pressures has been studied. The reaction is subject to positive catalysis by peroxides and negative catalysis by hydroquinone. Although the reaction is of a high order, the rate is approximately in accord with a first order reaction presumably because of an autocatalytic effect. The temperature and pressure coefficients of the rate have been estimated. The solubility and elasticity of the product depend on the extent to which the isoprene has been polymerized; when the polymerization is practically complete at room temperature at 12,000 atm. the product is very insoluble 2. The action of high pressures on n-butyraldehyde produces a solid only slightly soluble in organic solvents. It reverts to n-butyraldehyde rapidly. It is suggested that this polymer is similar to the well-known polymers of formaldehyde but that the energy relationships are such that the polymer is stable only at high pressures.

Temperature and Pressure Coefficients of Resistance for Thomas 1 Ω Resistors

NCSLI Measure ◽  
2007 ◽  
Vol 2 (2) ◽  
pp. 42-48 ◽  
Author(s):  
George R. Jones ◽  
Randolph E. Elmquist
Keyword(s):  
Pressure Coefficients ◽  
Temperature And Pressure

Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

1970 ◽  
Vol 28 ◽  
pp. 106-107 ◽  
Author(s):  
Ronald S. Weinstein ◽  
N. Scott McNutt
Keyword(s):  
New Zealand ◽  
General Hospital ◽  
Massachusetts General Hospital ◽  
Type I ◽  
Type Ii ◽  
Collaborative Effort ◽  
Temperature And Pressure ◽  
The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

ESEM - A multipurpose surface Electron Microscope

1986 ◽  
Vol 44 ◽  
pp. 632-633 ◽  
Author(s):  
G.D. Danilatos
Keyword(s):  
Electron Microscope ◽  
Room Temperature ◽  
Environmental Scanning ◽  
Gas Composition ◽  
Saturated Water Vapor ◽  
Surface Electron ◽  
Current State ◽  
Saturated Water ◽  
New Type ◽  
Temperature And Pressure

Over recent years a new type of electron microscope - the environmental scanning electron microscope (ESEM) - has been developed for the examination of specimen surfaces in the presence of gases. A detailed series of reports on the system has appeared elsewhere. A review summary of the current state and potential of the system is presented here.The gas composition, temperature and pressure can be varied in the specimen chamber of the ESEM. With air, the pressure can be up to one atmosphere (about 1000 mbar). Environments with fully saturated water vapor only at room temperature (20-30 mbar) can be easily maintained whilst liquid water or other solutions, together with uncoated specimens, can be imaged routinely during various applications.

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