Spatial Structure Change Analysis of Cultivated Soil Nutrients in Urban Fringe of North China

Author(s):  
Shiwei Dong ◽  
Yuchun Pan ◽  
Bingbo Gao
1979 ◽  
Vol 11 (1) ◽  
pp. 23-34 ◽  
Author(s):  
G I Thrall

A spatial-equilibrium model of a local public economy is developed in four settings. Each setting is distinguished by two factors: whether the city is ‘open’ or ‘closed’, and the method used to determine the urban fringe. The four settings are contrasted by use of a numerical illustration.


2011 ◽  
Vol 191 (1) ◽  
pp. 45-48 ◽  
Author(s):  
Satoshi Yamauchi ◽  
Mitsuhiro Hibino ◽  
Takeshi Yao

2020 ◽  
Vol 5 (7) ◽  

At present, a large increase in global alcoholics, the resulting problems associated with alcohol dependence cognitive dysfunction has become increasingly serious, the domestic and foreign research shows that long-term excessive drinking seriously damage the body organs, this paper mainly study the influence of the alcohol dependence on the central nervous system, from signal transduction, oxidative stress and neuritic response, neurotransmitter release and its receptor, nutrition metabolism, brain structure change analysis of alcohol dependence summarized research progress to do related to the pathogenesis of cognitive impairment.


2012 ◽  
Vol 30 (3) ◽  
pp. 230 ◽  
Author(s):  
Hui-Rong CHEN ◽  
Xin-Nian ZHOU ◽  
Rui-Tian CAI ◽  
Xi-Sheng HU ◽  
Zhi-Long WU ◽  
...  

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