河北省自然科学基金项目(No.H2013405091);河北省高等学校科学技术研究重点项目(No.ZH2012010);河北北方学院校级重大课题(No.ZD201312);Supported by Hebei Province Natural Science Fund(No.H2013405091);the Key Research Projects of Hebei Higher School Science and Technology(No.ZH2012010);the Major Issue of Hebei North University(No.ZD201312)