scholarly journals 2P314 The chemical reaction rate theory of aging and lifespan by C. elegans(The 48th Annual Meeting of the Biophysical Society of Japan)

2010 ◽  
Vol 50 (supplement2) ◽  
pp. S138
Author(s):  
Hitoshi Suda ◽  
Kazuya Sato ◽  
Tetsuji Shoyama ◽  
Yuka Shimizu
Keyword(s):  
Annual Meeting ◽  
Chemical Reaction ◽  
Reaction Rate ◽  
Rate Theory ◽  
C Elegans ◽  
Reaction Rate Theory ◽  
Biophysical Society ◽  
Theory Of Aging ◽  
Chemical Reaction Rate

A Reaction-Rate Treatment of the Extrapolation Methods in Creep Testing

1969 ◽  
Vol 91 (1) ◽  
pp. 59-62 ◽  
Author(s):  
M. Grounes
Keyword(s):  
Creep Rate ◽  
Chemical Reaction ◽  
Reaction Rate ◽  
Generalized Equation ◽  
Rate Theory ◽  
Extrapolation Methods ◽  
Time To Rupture ◽  
Reaction Rate Theory ◽  
Phenomenological Equations ◽  
Chemical Reaction Rate

Various phenomenological equations for the dependence of the time-to-rupture, etc., on temperature and stress have been related to a generalized equation based on chemical reaction-rate theory. In the derivation of these equations the assumption, which has been used and criticized in earlier work, that the time-to-rupture is inversely proportional to the creep rate and thus that the ductility is constant, is not needed.

A Kinetic Model of Precipitate Evolution

1995 ◽  
Vol 398 ◽  
Author(s):  
C. Lane Rohrer ◽  
M. D. Asta ◽  
S. M. Foiles ◽  
R. W. Hyland
Keyword(s):  
Point Defects ◽  
Reaction Rate ◽  
Al Alloys ◽  
Computational Method ◽  
Rate Theory ◽  
Homogeneous Precipitation ◽  
Temperature Dependent ◽  
Reaction Rate Theory ◽  
Chemical Reaction Rate ◽  
Kinetics Of

ABSTRACTChemical reaction rate theory is used to model the kinetics of precipitation reactions in Al alloys, including the effects of continuous cooling and thermally generated point defects. The computational method models the processes of nucleation, growth, and coarsening within a single framework. Calculated time and temperature dependent precipitate number densities and sizes during the homogeneous precipitation of the A13Sc phase in an Al-.11 at% Sc alloy are shown to compare favorably with experimental observations.

Thermal Decomposition Kinetics of Glyphosate (GP) and its Metabolite Aminomethylphosphonic Acid (AMPA)

2019 ◽  
Author(s):  
Milad Narimani ◽  
Gabriel da Silva
Keyword(s):  
Thermal Decomposition ◽  
Reaction Rate ◽  
Decomposition Kinetics ◽  
Rate Theory ◽  
Thermal Decomposition Mechanism ◽  
Treatment Processes ◽  
Aminomethylphosphonic Acid ◽  
Reaction Rate Theory ◽  
Decomposition Chemistry ◽  
Kinetics Of

Glyphosate (GP) is a widely used herbicide worldwide, yet accumulation of GP and its main byproduct, aminomethylphosphonic acid (AMPA), in soil and water has raised concerns about its potential effects to human health. Thermal treatment processes are one option for decontaminating material containing GP and AMPA, yet the thermal decomposition chemistry of these compounds remains poorly understood. Here, we have revealed the thermal decomposition mechanism of GP and AMPA by applying computational chemistry and reaction rate theory methods. <br>

Ab Initio Computation of Thermochemistry and Kinetics in the Oxidation of Gas Phase Silicon Species

1992 ◽  
Vol 282 ◽  
Author(s):  
Michael R. Zachariah ◽  
Wing Tsang
Keyword(s):  
Ab Initio ◽  
Gas Phase ◽  
Energy Barrier ◽  
Reaction Rate ◽  
Rate Theory ◽  
Molecular Orbital Calculations ◽  
Activation Energy Barrier ◽  
Ab Initio Computation ◽  
Oxygen Donor ◽  
Reaction Rate Theory

ABSTRACTAb initio molecular orbital calculations coupled to RRKM reaction rate theory have been conducted on some important reactions involved in the oxidation of silane in a high-temperature/high H2O environment. The results indicate thatH2O acts as an oxygen donor to SiH2 to form H3SiOH or SiH2O. Subsequent reactions involve the formation of (HSiOOH, H2Si(OH)2,:Si(OH)2 or SiO). In turn SiO polymerizes into planar rings, without an activation energy barrier. A list of calculated thermochemical data are also presented for a number of equilibrium species.

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