The National Natural Science Foundation of China (10871001; 61075009);the Provincial Natural Science Research Project of Anhui Colleges (KJ2010A005);the Talents Youth Fund of Anhui Province Universities (2010SQRL016ZD);the Youth Science Research Fund of Anhui University (2009 QN011A);the Innovation Group Foundation of Anhui University (KJTD001B)
Supported by the NNSF of China (10871001, 60803059);Provincial Natural Science Research Project of Anhui Colleges (KJ2010A005);Talents Youth Fund of Anhui Province Universities (2010SQRL016ZD);Youth Science Research Fund of Anhui University (2009QN011A);Academic innovation team of Anhui University (KJTD001B)