基金supported by the National Natural Science Foundation of China under Grant No.60962006 and the National Natural Science Foundation of Ningxia under Grant No.NZ0848
基金国家自然科学基金( the National Natural Science Foundation of China under Grant No.30570431)国家高技术研究发展计划( 863)( the National High-Tech Research and Development Plan of China under Grant No.2006AA01Z104)+4 种基金国家教育部新世纪人才支持计划( the New Century Excellent Talent Foundation from MOE of China under Grant No.NCET- 06- 555)安徽省优秀青年基金( No.06042088)安徽省教育厅自然科学( No.2006kj068A No.KJ2007B173)安徽省人才基金资助。
