Funding for this research was provided by:
National Natural Science Foundation of China (21607050)
China Postdoctoral Science Foundation (2017M621214)
Science and Technology Projects of the Ministry of Housing and Urban-rural development (2017-K7-003)
Open Funds of the State Key Laboratory of Rare Earth Resource Utilization (RERU2017023)
Natural Science Outstanding Young Talents Foundation of Jilin Province (20190103144JH)
Article History
Received: 10 October 2018
Accepted: 7 January 2019
First Online: 12 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interests.