Funding for this research was provided by:
Natural Science Foundation of Chongqing (cstc2018jcyjAX0150)
Natural Science Foundation of Chongqing (cstc2017jcyjAX0347)
Chongqing Graduate Research and Innovation Project (CYS18295)
Article History
Received: 25 September 2018
Revised: 21 November 2018
Accepted: 27 December 2018
First Online: 4 January 2019