The absolute and relative concentrations for six forms of or fractions of Cd (exchangeable,bound to carbonates, weakly-bounded. exchangeable plus weakly-bounded, bound to Fe-Mn oxides,and bound to org
In order to provide a scientific basis for laying out a unified standard of the reference value (Wintrobe) of Chinese peoples erythrocyte sedimentation rate (ESR). this paper studies the relationship
This paper aims to explore interinks between population, resoures, environment anddevelopment of mining cities in China. The authors place emphasis on speeific policy stud of how tostep a sustainable
This paper works out a practical evaluation method of sustainable development for theundeveloped the regions and take Shishan areas of Guangxi Zhuang Autonomous Region of Chinaas an example. First of
The population system is the only subsystem tha has charecteristic of subjectivity in theregional PRED system. Influenced by the particular status quo of natural resources and environmentconditions, t
Because of the existence of gradient field of the urban center and the corridor effect. underthe drive of going merely after economic benefit, the city intrinsically has the trend of massive growth,
According to various factors influencing the economic openness, this paper probestentatively into the way Northeast China complies with and participates in the Northeast Asiancooperation, with pertic
The fluctuation of lake levels in Tibetan area may be well reflected by the landformevidences, especially the last highest lake levels. This, in a certain degree, is more suitable fordetermning the cl