Lei, Zhang
Hao, Shu
Zhang, Lei
Yang, Jia
Yusu, Wang
Funding for this research was provided by:
Xi'an Science and Technology Plan Project (2019217714GXRC013CG014-GXYD13.4)
National Natural Science Foundation of China (51704230 and 41907255)
Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land and Resources in P.R. China (KF2019-7)
Shannxi Key Research and Development Project (2019ZDLSF05-05-01)
2019 Shaanxi Provincial Natural Science Basic Research Program Enterprise Joint Fund Project (2019JL-01)
Natural Science Basic Research Plan in Shaanxi Province of China (2018JM5048)
Article History
Received: 6 December 2019
Accepted: 6 April 2020
First Online: 15 April 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.