Reorganization energy, activation energy, and mechanism of hole transfer process in DNA: A theoretical study

2008 ◽  
Vol 128 (7) ◽  
pp. 075101 ◽  
Author(s):  
Arshad Khan
Keyword(s):  
Activation Energy ◽  
Transfer Process ◽  
Theoretical Study ◽  
Reorganization Energy ◽  
Hole Transfer ◽  
Energy Activation

Contributions of the Distance-Dependent Reorganization Energy and Proton-Transfer to the Hole-Transfer Process in DNA

2005 ◽  
Vol 11 (13) ◽  
pp. 3835-3842 ◽  
Author(s):  
Tadao Takada ◽  
Kiyohiko Kawai ◽  
Mamoru Fujitsuka ◽  
Tetsuro Majima
Keyword(s):  
Proton Transfer ◽  
Transfer Process ◽  
Reorganization Energy ◽  
Hole Transfer

Study of Donor Centres in n-InSb due to the Temperature Annealing

2005 ◽  
Vol 480-481 ◽  
pp. 197-200
Author(s):  
Y. Sayad ◽  
A. Nouiri
Keyword(s):  
Experimental Data ◽  
Activation Energy ◽  
Annealing Time ◽  
Annealing Temperature ◽  
Theoretical Study ◽  
Donor Concentration ◽  
Model Based ◽  
Proposed Model ◽  
Kinetics Of ◽  
Best Fit

An increasing of donor centres has been detected in n-InSb when it was submitted to anneal/quench with various annealing temperature (450 °C - 850 °C) and various annealing time (5 - 100 hours). A theoretical study of the kinetics of the conduction conversion of n-InSb at temperature annealing above 250 °C has been made. The present analysis indicates that the donor concentration increases with increasing of annealing time. In order to study this variation and to give a model for donor centres generated, a proposed model based on the simple kinetic is used to fit the variation of donor concentration as a function of annealing time. However, from the best fit of experimental data using the proposed model, the activation energy is determined.

Deciphering of Ligand‐to‐Metal Charge‐Transfer Process: Synthesis, Spectroscopic and Theoretical Study

2019 ◽  
Vol 4 (2) ◽  
pp. 458-464 ◽  
Author(s):  
Swadesh Ghosh ◽  
Dipti Singharoy ◽  
Jnan Prakash Naskar ◽  
Subhash Chandra Bhattacharya
Keyword(s):  
Charge Transfer ◽  
Transfer Process ◽  
Theoretical Study ◽  
Process Synthesis ◽  
Charge Transfer Process ◽  
Metal Charge ◽  
Metal Charge Transfer

scholarly journals The Application of Equivalent Age Concept to Sand Concrete Compared to Ordinary Concrete

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Nabil Bella ◽  
Ilham Aguida Bella ◽  
Aissa Asroun
Keyword(s):  
Activation Energy ◽  
Coarse Aggregate ◽  
Strength Development ◽  
Arrhenius Law ◽  
Ordinary Concrete ◽  
Equivalent Age ◽  
Heat Treated ◽  
Sand Filler ◽  
Energy Activation ◽  
Prestressed Beams

In this research the equivalent age concept was used, in order to simulate strength development of heat treated sand concrete compared with ordinary concrete at different temperature, 35, 55, and 70°C, and validate the simulation results with our experimental results. Sand concrete is a concrete with a lower or without coarse aggregate dosage; it is used to realize thin element as small precast prestressed beams, in injected concrete or in regions where sand is in extra quantity and the coarse aggregate in penury. This concrete is composed by principally sand, filler, superplasticizer, water, and cement. The results show that the simulation of ordinary concrete was acceptable with an error lower than 20%. But the error was considerable for the sand concrete. The error was due to large superplasticizer dosage, which modified the hardening of sand concrete; the most influent parameter in Arrhenius law is apparent energy activation, to search for the value of the activation energy which gives the best simulation; a superposition is used of two curves of different temperature and with superplasticizer dosage 4% and several values of activation energy, 15, 20, 25, and 30 × 10 kcal. The simulation becomes ameliorated with the adequate value of activation energy.

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