Wang, Pengfu http://orcid.org/0000-0002-8385-5914
Funding for this research was provided by:
Chongqing Research Program of Basic Research and Frontier Technology (cstc2017jcyjAX0416)
Scientific and Technological Research Program of Chongqing Municipal Education Commission (KJ1706168)
High level introduction of talent research start-up fund of Chongqing Technology and Business University (1756005)
Article History
Received: 20 October 2018
Accepted: 26 March 2019
First Online: 1 April 2019
Competing interests
: The author declares that he has no competing interests.