Wang, Fangfang
Xia, Wei
Mu, Xichuan
Chen, Kun
Wang, Longxiang
Funding for this research was provided by:
National Natural Science Foundation of China (Grant 21406269)
Shandong Provincial Natural Science Foundation, China (Grant ZR2014BQ012)
Shandong Provincial Key Research Program (Grant: 2015GSF121017)
the Fundamental Research Funds for the Central Universities (15CX05013A)
the International Cooperation and Exchange Fund, China University of Petroleum (UPCGJ2018010)
Scientific Research Foundation for Returned Scholars, Ministry of Education of China (K1504051C)
Article History
Received: 2 February 2018
Accepted: 27 March 2018
First Online: 6 April 2018