Funding for this research was provided by:
the Natural Science Foundation of China (41302223)
Chongqing Research Program of Basic Research and Frontier Technology (cstc2016jcyjA0074, cstc2016jcyjA0933)
Chongqing No.3 colleges and universities youth backbone teachers funding plans
Science and Technology Plan Projects of Chongqing Administration of Land, Resources and Housing (KJ-2015047)
Article History
Received: 31 December 2016
Accepted: 9 June 2020
First Online: 16 June 2020