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Authors
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (21676174, U1610115 and 21878200)
International S&T Cooperation Program of Shanxi province (201703D421038)
Shanxi Scholarship Council of China (2017-036)
Joint Fund of Shanxi Provincial Coal Seam Gas (2015012019)
Graduate Research and Innovation Projects of Shanxi Province (2019)
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Article History
Received: 27 November 2019
Revised: 18 January 2020
Accepted: 3 February 2020
First Online: 11 February 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
