Funding for this research was provided by:
National Natural Science Foundation of China (51874363, U1760202)
Natural Science Foundation of Hunan Province (2019JJ40345)
Hunan Scientific Technology projects (2018RS3022, 2018WK2051)
Article History
Received: 4 August 2019
Accepted: 31 December 2019
First Online: 14 January 2020