Funding for this research was provided by:
Nationa l Natural Science Foundation of China (41571417 and U1604145)
China Postdoctoral Science Foundation (2016M602235)
Henan University (xxjc20140006)
Science and Technology Foundation of Henan Province of China (182102210027, 182102210238, and 172102210186)
Article History
Received: 21 October 2017
Revised: 25 March 2018
Accepted: 4 April 2018
First Online: 23 April 2018