Funding for this research was provided by:
the National Natural Science Foundation of China under Grant (61105110, 11573011)
the Natural Science Foundation of the Jiangsu Higher Education Institutions of China under Grant (14KJB510004)
the Jiangsu Overseas Research and Training Program for University Prominent Young and Middle-aged Teachers and President
the Lianyungang ”521” Project
Six talent peaks project in Jiangsu Province
Article History
Received: 15 February 2016
Accepted: 28 April 2018
First Online: 22 May 2018