国家高技术研究发展计划(863)(the National High-Tech Research and Development Plan of China under Grant No.2006AA06Z233);河北省科学技术研究与发展项目(the Science and Technologies Research Project of Hebei Province; China under Grant No.06213559);河北省教育厅科学研究计划项目(the Scientific Research Project of Department of Hebei Education of China under Grant No.2004454)