Influence of Boundary Condition and Diffusion Coefficient on the Accuracy of Diffusion Theory in Steady-State Spatially Resolved Diffuse Reflectance of Biological Tissues

2002 ◽  
Vol 19 (12) ◽  
pp. 1874-1876 ◽  
Author(s):  
Zhang Lian-Shun ◽  
Zhang Chun-Ping ◽  
Wang Xin-Yu ◽  
Qi Sheng-Wen ◽  
Xu Tang ◽  
...  
Keyword(s):  
Boundary Condition ◽  
Diffusion Coefficient ◽  
Steady State ◽  
Diffuse Reflectance ◽  
Diffusion Theory ◽  
Biological Tissues ◽  
Spatially Resolved ◽  
And Diffusion

Calculation Method about Vertical Distribution of Saturated Sediment Concentration Based on Exchange Equilibrium

2013 ◽  
Vol 405-408 ◽  
pp. 2287-2291
Author(s):  
Xiao Xiang Feng ◽  
Pei Jiu Yue
Keyword(s):  
Diffusion Coefficient ◽  
Vertical Distribution ◽  
Diffusion Theory ◽  
Sediment Concentration ◽  
Exchange Equilibrium ◽  
Sediment Diffusion Coefficient ◽  
The Difference ◽  
The Vertical Distribution ◽  
And Diffusion ◽  
Key Parameter

Diffusion theory is the leading one which is used to study the vertical distribution of sediment concentration. And diffusion coefficient is a key parameter to determine the vertical distribution of suspended sediment. First of all, the calculation methods are introduced based on the momentum transfer theory and fluctuating velocity. According to the sediment equation of exchange equilibrium in vertical, the new expression is obtained for sediment diffusion coefficient and the vertical distribution of sediment concentration. By the flume experimental data and field data in natural river, the difference is analyzed among the different expressions.

PERMEABILITY AND DIFFUSION COEFFICIENT PREDICTION OF FRACTAL POROUS MEDIA WITH NANOSCALE PORES FOR GAS TRANSPORT

2018 ◽  
Vol 21 (12) ◽  
pp. 1253-1263
Author(s):  
Ruifei Wang ◽  
Hongqing Song ◽  
Jiulong Wang ◽  
Yuhe Wang
Keyword(s):  
Porous Media ◽  
Diffusion Coefficient ◽  
Gas Transport ◽  
And Diffusion

Neutron noise calculation: A comparative study between SP3 theory and diffusion theory

2021 ◽  
Vol 156 ◽  
pp. 108184
Author(s):  
Helin Gong ◽  
Zhang Chen ◽  
Wenbin Wu ◽  
Xingjie Peng ◽  
Qing Li
Keyword(s):  
Comparative Study ◽  
Diffusion Theory ◽  
Neutron Noise ◽  
And Diffusion

Diffusion Constant and Diffusion Coefficient

Science ◽  
1955 ◽  
Vol 121 (3137) ◽  
pp. 215-216 ◽  
Author(s):  
J. VERDUIN
Keyword(s):  
Diffusion Coefficient ◽  
Diffusion Constant ◽  
And Diffusion
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