基金国家自然科学基金( the National Natural Science Foundation of China under Grant No.60474029)湖南省自然科学基金( the Natural Science Foundation of Hunan Province of China under Grant No.03JJY3107)+1 种基金湖南省教育厅资助科研课题 ( the Research Project of Department of Education of Hunan Province China under Grant No.05C188)
基金The National Natural Science Foundation of China(No.60474049,60835001)Specialized Research Fund for Doctoral Program of Higher Education(No.20090092120027)