The National Natural Science Foundation of China(11071002);the Program for NewCentury Excellent Talents in University,Key Project of Chinese Ministry of Education(210091);the Specialized Research Fund for the Doctoral Program of Higher Education(20103401110002);the Science andTechnological Fund of Anhui Province for Outstanding Youth(10040606Y33);the Project of Anhui Prov-ince for Excellent Young Talents in Universities(2009SQRZ017ZD);the Project of Educational Departmentof Anhui Province(KJ2010B136);the Scientific Research Fund for Fostering Distinguished Young Scholars of Anhui University(KJJQ1001);the Project for Academic Innovation Team of Anhui University(KJTD001B)