Liu, Fulai
Du, Ruiyan
Funding for this research was provided by:
the Fundamental Research Funds for the Central Universities (N142302001)
the Program for New Century Excellent Talents in University (NCET-13-0105)
the Support Program for Hundreds of Outstanding Innovative Talents in Higher Education Institutions of Hebei Province (BR2-259)
the Specialized Research Fund for the Doctoral Program of Higher Education of China (20130042110003)
Natural Science Foundation of Hebei Province (F2016501139)