The National Science Foundation of China(10701066);Basic and Cutting-edge Technology Research Projects of Henan Province (092300410137);The Natural Science Foundation of Henan Education Committee(2008-755-65);The NationalScience Foundation of the Education Department of Henan province (2008A110022)
Supported by the National Natural Science Foundation of China(10701066,10671084);the Natural Science Foundation of Henan Education Committee(2007110037)