厦门市科技局资助项目(3502z20089001),福建省自然科学基金面上项目(2009D002),中国博士后基金(20080440728),重庆市教委科技项目(KJ100504).
Supported by Foundation of Science and Technology Bureau of Xiamen (3502z20089001), the Natural Science Foundation of Fujian (2009D002), China Postdoctoral Science Foundation (20080440728), and Science and Technology Project of Education Committee of Chongqing Municipality(KJ100504).