Funding for this research was provided by:
National Natural Science Foundation of China (51371111, 11364035, 11404186)
Key Basic Research Program of Science and Technology Commission of Shanghai Municipality (13JC1402400)
Applied Basic Research Foundation of Yunnan Province (2013FZ110)
Innovative Research Team of Qujing Normal University (TD201301)
Article History
Received: 28 October 2015
Revised: 5 January 2016
Accepted: 4 November 2016
First Online: 20 December 2016