Natural Science Foundation of Educational Department of Henan Province(2009B110019);The Backbone Youth Teacher Foun-dation of Xinyang Normal University
the National Natural Science Foundation of China (10471117);the Henan Innovation Project for University Prominent Research Talents(2005KYCX017);the Youth Science Foundation of Xinyang Normal University(20070209)
This Work is Supported by the National Natural Science Foundation of China (No.10771179);the Henan Innovation Project for University Prominent Research Talents(No.2005KYCX017);the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry