基金Supported by the Funds of Ministry of Education of China for PhD Units under No. 200201410L3the National Natural Science Foundation of China under project grant No.10471015
基金supported by National Science foundation of China(under grant:10671 126)The Innovation Fund Project For Graduate Student of Shanghai(JWCXSL0801)+1 种基金key project for Fundamental Research of STCSM(project number:06JC14057)Shang haileading academic discipline project(S30501).