Temperature dependence of methylidyne [CH (CD)] + deuterium reaction kinetics

1991 ◽  
Vol 95 (3) ◽  
pp. 1277-1282 ◽  
Author(s):  
C. T. Stanton ◽  
Nancy L. Garland ◽  
Herbert H. Nelson
Keyword(s):  
Temperature Dependence ◽  
Reaction Kinetics

Temperature Dependence of the HO2+ ClO Reaction. 1. Reaction Kinetics by Pulsed Photolysis-Ultraviolet Absorption and ab Initio Studies of the Potential Surface

2000 ◽  
Vol 104 (2) ◽  
pp. 308-319 ◽  
Author(s):  
Scott L. Nickolaisen ◽  
Coleen M. Roehl ◽  
Lisa K. Blakeley ◽  
Randall R. Friedl ◽  
Joseph S. Francisco ◽  
...  
Keyword(s):  
Ab Initio ◽  
Temperature Dependence ◽  
Reaction Kinetics ◽  
Potential Surface ◽  
Ultraviolet Absorption ◽  
Pulsed Photolysis

Temperature Dependence of the OH– + CH3I Reaction Kinetics. Experimental and Simulation Studies and Atomic-Level Dynamics

2013 ◽  
Vol 117 (51) ◽  
pp. 14019-14027 ◽  
Author(s):  
Jing Xie ◽  
Swapnil C. Kohale ◽  
William L. Hase ◽  
Shaun G. Ard ◽  
Joshua J. Melko ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Reaction Kinetics ◽  
Atomic Level ◽  
Simulation Studies

The Reaction Mechanism of Thiuram Disulfide Vulcanization of Poly-1,5-Dienes, Particularly of Natural Rubber

1957 ◽  
Vol 30 (2) ◽  
pp. 393-396
Author(s):  
G. Blelstein ◽  
W. Scheele
Keyword(s):  
Reaction Mechanism ◽  
Natural Rubber ◽  
Temperature Dependence ◽  
Reaction Kinetics ◽  
Experimental Work ◽  
Complete Solution ◽  
Experimental Results ◽  
Present Treatment ◽  
Final Interpretation ◽  
Kinetics Of

Abstract In previous publications on thiuram vulcanization we confined ourselves to the presentation and discussion of our extensive experimental work. We had investigated quantitatively the conversion of thiuram disulfides and were in a position to describe the kinetics of thiuram vulcanization. Such investigations are, of course, of particular value to technology for information about the rate and temperature dependence of vulcanization reactions. Our experiments were therefore not primarily designed to determine the details of reaction mechanism, which we had hitherto treated with restraint, and experience shows that the study of reaction kinetics does not always provide the key to a complete solution. All the same, it now seems reasonable to pick out some of the results we have obtained, and so consider the question of a reaction mechanism for thiuram vulcanization. We should, however, like to state, that although the present treatment concerns matters which may include some pertinent points, it does not necessarily represent a final interpretation. It is to be stressed, that any postulated reaction mechanism must explain what we regard as a stoichiometrical, i.e., concentration and temperature independent conversion of thiuram disulfide to zinc dithiocarbamate. The following experimental results thus formed the basis of our considerations:

Temperature Dependence of the Critical Electron Dose for Fatty Acid Monolayers

1982 ◽  
Vol 40 ◽  
pp. 78-79
Author(s):  
Kenneth H. Downing ◽  
Robert M. Glaeser
Keyword(s):  
Electron Beam ◽  
Fatty Acid ◽  
Inelastic Scattering ◽  
Temperature Dependence ◽  
Structural Damage ◽  
Direct Result ◽  
Second Step ◽  
Strong Temperature Dependence ◽  
Electron Dose ◽  
Covalent Bonds

The structural damage of molecules irradiated by electrons is generally considered to occur in two steps. The direct result of inelastic scattering events is the disruption of covalent bonds. Following changes in bond structure, movement of the constituent atoms produces permanent distortions of the molecules. Since at least the second step should show a strong temperature dependence, it was to be expected that cooling a specimen should extend its lifetime in the electron beam. This result has been found in a large number of experiments, but the degree to which cooling the specimen enhances its resistance to radiation damage has been found to vary widely with specimen types.

Temperature Dependence of Magnetic Domains and Wall Structures

1972 ◽  
Vol 30 ◽  
pp. 496-497
Author(s):  
Sonoko Tsukahara ◽  
Tadami Taoka ◽  
Hisao Nishizawa
Keyword(s):  
Temperature Dependence ◽  
Domain Walls ◽  
Magnetic Domain ◽  
Iron Film ◽  
Objective Lens ◽  
Lorentz Microscopy ◽  
Domain Structures ◽  
Wall Structures ◽  
Crystal Films ◽  
Metallurgical Structure

The high voltage Lorentz microscopy was successfully used to observe changes with temperature; of domain structures and metallurgical structures in an iron film set on the hot stage combined with a goniometer. The microscope used was the JEM-1000 EM which was operated with the objective lens current cut off to eliminate the magnetic field in the specimen position. Single crystal films with an (001) plane were prepared by the epitaxial growth of evaporated iron on a cleaved (001) plane of a rocksalt substrate. They had a uniform thickness from 1000 to 7000 Å.The figure shows the temperature dependence of magnetic domain structure with its corresponding deflection pattern and metallurgical structure observed in a 4500 Å iron film. In general, with increase of temperature, the straight domain walls decrease in their width (at 400°C), curve in an iregular shape (600°C) and then vanish (790°C). The ripple structures with cross-tie walls are observed below the Curie temperature.

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