Analytical Formulae for Cross Sections and Rate Constants of Elementary Processes in Gases

1985 ◽  
pp. 697-704
Author(s):  
G. V. Dubrovskiy ◽  
A. V. Bogdanov ◽  
Yu. E. Gorbachev ◽  
L. F. Vyunenko ◽  
V. A. Pavlov ◽  
...  
Keyword(s):  
Cross Sections ◽  
Rate Constants ◽  
Elementary Processes ◽  
Analytical Formulae

Quantum mechanical integral cross sections and rate constants for the F+HD reactions

2000 ◽  
Vol 112 (22) ◽  
pp. 9802-9809 ◽  
Author(s):  
Dong H. Zhang ◽  
Soo-Y. Lee ◽  
Michael Baer
Keyword(s):  
Cross Sections ◽  
Rate Constants ◽  
Quantum Mechanical

Decomposition rate constants of Picea abies logs in southeastern Norway

1999 ◽  
Vol 29 (3) ◽  
pp. 372-381 ◽  
Author(s):  
Erik Næsset
Keyword(s):  
Picea Abies ◽  
Rate Constant ◽  
Cross Sections ◽  
Decomposition Rate ◽  
Rate Constants ◽  
Initial Density ◽  
Decomposition Rate Constant ◽  
Negative Exponential Function ◽  
Standing Trees ◽  
Negative Exponential

Decomposition rate constants were estimated from 384 cross sections of Norway spruce (Picea abies (L.) Karst.) logs with base diameter >7.0 cm collected in open areas at five different study sites in southeastern Norway. Fresh wood core samples were taken from 95 standing trees adjacent to the logs to estimate the initial density of these cross sections. Based on this chronosequence, a simple negative exponential function of time showed an average decomposition rate constant for all cross sections of 0.033 per year. Cross-section diameter, ground contact, soil moisture, and aspect were all found to have significant impacts on the decomposition rate constant. For different combinations of these characteristics the decomposition rate constant ranged from a minimum of 0.0165 per year to a maximum of 0.0488 per year.

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