Funding for this research was provided by:
National Natural Science Foundation of China (50971043, 51171046)
Research Fund for the Doctoral Program of Higher Education of China (20133514110006)
Natural Science Foundation of Fujian Province (2014J01176)
Program for New Century Excellent Talents in University of Fujian provincial (JA10013)
Article History
Received: 26 June 2016
Revised: 31 August 2016
Accepted: 19 April 2017
First Online: 24 May 2017