Supported by the NSF of Anhui Provincial (090416237, 1208085MA13);the Research Fund for the Doctoral Program of Higher Education (20103401120002 , 20113401120001);the 211 Project of Anhui University (02303129 , KJTD002B , 02303303-3303011 , 02303902-39020011);the Foundation of Anhui Education Bureau (KJ2009A49 , KJ2012A019)
Supported by the Anhui Provincial NSF(090416237);the Doctoral Program of Ministry of Education of China(20103401120002);the NNSF(10971229);the 211 Project of Anhui University(02303129,KJTD002B);the Foundation of Anhui Education Bureau of China(KJ2009A49,KJ2009AZ005)