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Comprehensive Benefit Assessment of Efficient Ecological Fishery in the Yellow River Delta (Dongying City)
ZHOU Xin;XU Xuegong
Acta Scientiarum Naturalium Universitatis Pekinensis    DOI: 10.13209/j.0479-8023.2015.021
Plant-Soil Relationship and Plant Niche in the Yellow River Delta National Natural Reserve, China
MA Zongwen,XIE Zhenglei,DUAN Xiaofeng,ZHOU Xin,Timothy R. ROSEN,XU Xuegong
Acta Scientiarum Naturalium Universitatis Pekinensis   
The Faunal Study on the Butterflies of the South Slope of Qinling Mountains
ZHOU Xin,SUN Lu,PAN Wenshi,Lü Zhi,NI Yinong
Acta Scientiarum Naturalium Universitatis Pekinensis   
Abstract737)            Save
The scope of the fauna and geographical vertical distribution of the butterflies of the south slope of Qinling Mountains are studied. The investigators try to illustrate the conservation value of the Giant Pandas' habitat through the study which spans 8 years. 191 species are recorded, 3 of them are China's new records, and 44 of them are new records of Shanxi Province. The result of a serious of analysises shows that the percentages of Oriental species, Palearctic species and widely distributive species are 40.8%, 20.9% and 31.9% respectively. The fauna of butterflies of the south slope has the character of intergradation which is correlated to the geographic location of the Qinling Mountains. The obstruction of Qinling to Oriental species is more obvious to Palearctic species. The area in question has great conservation value as following aspects: (1) The population of butterfly shows great species abundance; (2) The heterogeneity of habitat revealed by the presence of multi-subspecies and multi-morphological species provides animals a steady habitat; (3) The faunal character and vertical distribution of butterflies show great value of ecological study; (4) The mid-mountain (800~2600m) that has better environmental condition and less human disturbance is a typical shelter for the wild animals.
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Study of Separation of Substituted Piperazine by CZE and HPLC
SHENG Chunli,ZHOU Xin,JIN Sheng
Acta Scientiarum Naturalium Universitatis Pekinensis   
Abstract626)            Save
The CZE and HPLC separation of substituted piperazine designed and synthesized by our research group was investigated. In CZE the influence of pH value of the buffer, the source of the capillary, the type and concentration of the buffer was examined. The complete separation of I and III was not obtained becauseof their similar electrophoretic migration velocity under the optimized conditions of CZE. In HPLC the complete separation of the four compounds was obtained employing 85% acetonitrile-15% water as the mobile phase. It demonstrated the two separation techniques based on different separation mechanism may be complementary each other for the separation of drugs.
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