BEIJING,NORMAL UNIVERSITY

Department of Chemistry, Beijing Normal University, Beijing 100875, China... 

Beijing Normal University Biomedicine Research Institute and College of Life Science Beijing 100875 China... 

Siqin Dalai Chen Wenxiu Beijing,Normal University... 

Department of Chemistry, Beijing Normal University, Beijing 100875, P. R. China E-mail xinhuaz bnu. edu. cn... 

We gratefully acknowledge the financial support from the National Natural Science Foundation of China NSFC 29871006. We also thank Gu Zhou for taking the ED photographs in the Analyzing and Testing Center, Beijing Normal University. 

Shangda Jiang was born in 1984, received his B.Sc. degree in chemistry at Beijing Normal University in 2006, and he is now a Ph.D. student at Peking University, with Professor Song Gao as his supervisor. His research is focused on the magnetic relaxation phenomena based on lanthanide ions. 

Qinhong Hu College of Water Sciences, Beijing Normal University, Xinjiekouwai Street 19, Beijing 100875, R R. China Department of Earth and Environmental Sciences,... 

Wang, P. Z., Fuzzy Sets and the Fall-Shadow of Random Sets, Beijing Normal University Press, Beijing, 1985 (in Chinese). 

Liu, D. Z., 1996, Studies on the behavioral ecology of captive giant pandas [Ailuropoda melanoleuca), PhD dissertation, Beijing Normal University, Beijing. 

College of Water Sciences Key Laboratory for Water and Sediment Sciences of Ministry of Education Beijing Normal University, Beijing,... 

The authors acknowledge the supports of the 863 program of China [2007AA06Z308] during the whole research. The authors also acknowledge the supports of Key Laboratory for Water and Sediment Sciences of Ministry of Education and College of Water Sciences of Beijing Normal University which provided the laboratory and experimental condition. 

Beijing Normal University, et al. Inorganic Chemistry. Beijing People Education Press, 581-583, 1981. 

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