Funding for this research was provided by:
Science Foundation of Hebei Normal University (L2016B08)
Ministry of Science and Technology of Peoples’ Republic of China (2015CB856703)
National Natural Science Foundation of China (11375200, 11605039)
National Natural Science Foundation of China (11635009, 11975236)
Natural Science Foundation of Hebei Province (A2017205124)
Article History
Received: 2 January 2020
Accepted: 30 January 2020
First Online: 14 February 2020