Supported by the National Natural Science Foundation of China(11501233);China Postdoctoral Science Foundation(2015M572327);Humanities and Social Sciences Program of the Ministry of Education(15YJC630053);Natural Science Foundation of Anhui Province(1408085MA08,1508085SMA204);Natural Science Foundation of the Education Department of Anhui Province(KJ2015A335,KJ2015A270)
Project supported by the project foundation of the department of education of Anhui province(KJ2011B152);the grant ofscientific research foundation Hefei university(11KY06ZR);the grant of scientific research foundation Huaibei normal university(2011xqxm42)