DIFFUSIVITY

作品数：162被引量：204H指数：6
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相关领域：理学更多>>
相关作者：叶勤赵亭亭杨江辉汤华清李惟毅更多>>
相关机构：华中科技大学中国石油大学（北京）重庆市建筑科学研究院天津大学更多>>
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相关基金：国家自然科学基金国家重点基础研究发展计划河北省自然科学基金国家教育部博士点基金更多>>
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Numerical research on the 3D fiber orientation distribution in arbitrary planar flows被引量：3
《Progress in Natural Science:Materials International》2007年第11期1357-1362,共6页Zhou Kun Lin Jianzhong 
Supported by National Natural Science Foundation of China (Grant No 10632070)
The fiber orientation distribution in a fiber suspension flow was investigated by a finite difference scheme in spherical coordinates. The diffusivity was transformed between Cartesian and spherical coordinates throug...
关键词：fiber suspension flow orientation distribution diffusivity. 
Effects of diffusion time and diffusion gradient strength on the mean diffusivity of water molecules in healthy human brain被引量：4
《Progress in Natural Science:Materials International》2006年第7期706-711,共6页GAO Song WANG Xiaoying BAO Shanglian 
Supported by National Natural Science Foundation of China (Grant No, 10527003)Joint Research Fund of Beijing (SYS100010401) The Research Fund for the Doctoral Program of Higher Education (20040001003)
Diffusion time and diffusion gradient strength are two important parameters of pulsed gradient spin echo （PGSE） that is the most commonly used method in diffusion-weighted magnetic resonance imaging. However, the ef...
关键词：diffusion time diffusion gradient strength diffusion-weighted imaging diffusion tensor imaging mean diffusivity. 
Environmental embrittlement of intermetallics被引量：2
《Progress in Natural Science:Materials International》2001年第8期3-10,共8页万晓景 陈业新 程晓英 
Project supported by the National Natural Science Foundation of China (Grant No. 59895157, 59081415, 59371002,59771007)
The effect of alloying elements on the environmental embrittlement of L12 type intermetallics is summarized. The results show that the ductilizing effect of boron doping in Ni3Al is mainly to suppress the moisture-ind...
关键词：INTERMETALLICS ENVIRONMENTAL embrlttlement ALLOYING ELEMENT hydrogen DIFFUSIVITY surface reaction. 
The difference scheme of soil hydraulic conductivity and diffusivity and experimental tests
《Progress in Natural Science:Materials International》1997年第6期69-76,共8页董加瑞 王昂生 
Starting from classical soil hydraulic diffusivity equation, a set of new difference schemes of conductivity and diffusivity in interior boundary between two neighbouring model layers are developed to calculate soil h...
关键词：SOIL HYDRAULIC CONDUCTIVITY DIFFUSIVITY INTERIOR BOUNDARY wetness. 
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