Zhou, Yahong
Ning, Jing
Li, Lingxi
Long, Qi
Wei, Aihua
Liu, Zhuo
Funding for this research was provided by:
Natural Science Foundation of Education Department in Heibei Province (D2019403194)
Fundamental Research Funds for the Central Universities, CHD (300102299505 and 300102290501)
Projects supported by the youth science and technology fund of Hebei GEO University (QN201508)
Article History
Received: 18 April 2020
Revised: 1 June 2020
Accepted: 5 June 2020
First Online: 11 June 2020
Compliance with Ethical Standards
:
: The authors declared they have no conflict of interest.