Funding for this research was provided by:
National Natural Science Foundation of China (61673078)
graduate innovative research of Chongqing Normal University (YKC17017, YKC17018)
graduate innovative research of Chongqing Normal University (YKC17016)
Chongqing Science and Technology Commission (CYS17181)
Chongqing Natural Science Foundation (cstc2018jcyjAX0369)
Article History
First Online: 29 August 2018