Funding for this research was provided by:
National Science Foundation (CBET-1351881)
National Natural Science Foundation of China (61204007)
New-Century Training Programme Foundation for the Talents by Heilongjiang Province (1254-NCET-018)
Foundation for University Key Teacher by Heilongjiang Province (1252G047)
Heilongjiang Province Postdoctoral Science Foundation (LBH-Q14139)
Science Foundation of Heilongjiang University for Young Scholars (JCL201205)
Article History
Received: 11 May 2016
Accepted: 24 July 2016
First Online: 1 August 2016