supported by the National Natural Science Foundation of China(No.31160219);the National Basic Research Development Program(973 Program)of China(No.2012CB518200);the International Cooperation Projects of China(No.2011DFA32720)
supported by the Doctoral Program of Higher Education Research Fund Special Priority to the Development of Subject Areas;Ministry of Education of China(No.20110071130009)
supported by the National Natural Science Foundation of China(No.30700390);the Natural Science Foundation of Hebei Province;China(No.C2009000291);the Science Foundation of Hebei Normal University;China(No.L2009B15)