Funding for this research was provided by:
the National Natural Science Foundation of China (NSFC51604180)
he Applied Basic Research Programs of Science and Technology Department of Shanxi Province (201701D221036)
the start-up funds of Taiyuan Institute of Technology (201401)
the Youth Academic Leader of Taiyuan Institute of Technology support program (201601)
Article History
Received: 18 October 2017
Accepted: 4 January 2018
First Online: 13 January 2018