Supported by the National Natural Science Foundation of China 31300669,by the Key Grant of Science and Technology Department of Henan Province 112102210385,142102210479,by the Science Foundation for the High-level Talent of Nanyang Normal University zx20110007 and by the Scientific Research Fund of Henan Educational Committee 13A180811,14B180003;国家自然科学基金项目31300669;河南省科技厅科技攻关项目112102210385,142102210479;南阳师范学院高层次人才科研启动项目zx20110007;河南省教育厅科学技术重点研究项目13A18081,14B180003