Funding for this research was provided by:
National Natural Science Foundation of China (11671072, 61773137)
Natural Science Foundation of Shandong Province (ZR2018MA005, ZR2018MA020)
Natural Science Foundation of Shandong Province (ZR2017MA008)
Harbin Institute of Technology (HIT.NSRIF.201703)
Article History
Received: 11 October 2018
Accepted: 13 March 2019
First Online: 22 June 2019
Compliance with ethical standards
:
: No potential conflict of interest was reported by the authors.