基金This research is supported by the Provincial Natural Science Foundation of Jiangsu under Grant No.BK97047The Education Bureau Foundation of Jiangsu Province under Grant No. 00KJT11003.
基金Supported by National Science Foundation of China(10801124,11171321,10801188)the Fundamental Research Funds for the Central Universities(WK2040170006)
基金The National Natural Science Foundation of China under Grant No.60975027,60903100the Natural Science Foundation of Ningbo of China under Grant No.2009A610080~~