Supported by the National Natural Science Foundation of China(11371027,11471015);the Program of Natural Science of Colleges of Anhui Province(KJ2013A032);the Youth Superior Talent Key Foundation of Anhui Province(2013SQRL142ZD)
the National Nature Science Foundation of China(11071001);the Doctoral Foundation of Ministry of Education of China(20093401110001);the Foundation of Hefei University of Technology(2009HGXJ0057)