Funding for this research was provided by:
Yuyou Talent Support Plan of North China University of Technology (107051360019XN132/017)
The Fundamental Research Funds for Beijing Universities (110052971803/037)
Special Research Foundation of North China University of Technology (PXM2017_014212_000014)
Natural Science Foundation of Beijing Municipality (4162022)
Article History
Received: 26 September 2019
Accepted: 26 March 2020
First Online: 11 April 2020
Competing interests
: The authors declare that they have no competing interests.