the National Natural Science Foundation of China(10722043);Funding for Outstanding Doctoral Dissertation in NUAA(BCXJ12-10);Funding of Jiangsu Innovation Program for Graduate Education(CXLX12_0143);the Ministry of education of China doctor station fund(20093218110024);China postdoctoral fund(2013M531346);Huaian Science and Technology Support Program(HASZ2013007);the Fundamental Research Funds for the Central Universities