SOILS

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An Improved Dynamic Hysteretic Model for Soils
《Journal of Shanghai Jiaotong university(Science)》2013年第6期655-659,共5页禹海涛 王建华 袁勇 
the National Natural Science Foundation of China(No.51208296);the National Key Technology R&D Program(Nos.2011BAG07B01 and 2012BAK24B00);the National Basic Research Program(973)of China(No.2011CB013600)
A dynamic hysteretic constitutive model for soil dynamics, Ramberg-Osgood model, is introduced and improved in the paper. Since the model is inherently 1D and is assumed to apply to shear components only, other compon...
关键词：constitutive model SOILS dynamic hysteretic NONLINEAR Ramberg-Osgood model 
Heavy Metal Content in Chinese Vegetable Plantation Land Soils and Related Source Analysis被引量：47
《Agricultural Sciences in China》2008年第9期1115-1126,共12页ZENG Xi-bai LI Lian-fang MEI Xu-rong 
the National Key Technology R&D Program during the 11th Five-Year Plan period (2006BAD05B01);the project of Standards on Heavy Metal Contamination of Farmlands (2007-2009);Special Public Welfare Fund of Basic Scientific Research Service Spends for Research Institute/Academy supported by China Central Government
According to the previous literature published since 1989, statistical analysis for reported data on the heavy metals in Chinese vegetable plantation soils was carried out systematically in this article. The purpose o...
关键词：China vegetable land heavy metal content REASON 
Fixed Ammonium Content and Maximum Capacity of Ammonium Fixation in Major Types of Tillage Soils in Hunan Province,China被引量：5
《Agricultural Sciences in China》2007年第4期466-474,共9页ZHANG Yang-zhu HUANG Shun-hong WAN Da-juan HUANG Yun-xiang ZHOU Wei-jun ZOU Ying-bin 
In order to understand the status of fixed ammonium, fixed ammonium content, maximum capacity of ammonium fixation, and their influencing factors in major types of tillage soils of Hunan Province, China, were studied ...
关键词：Hunan Province tillage soils paddy soil upland soil fixed ammonium maximum capacity of ammonium fixation 
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