Funding for this research was provided by:
National Natural Science Foundation of China (41671037, 41301091)
Youth Innovation Promotion Association of the Chinese Academy of Sciences (2016049)
Program for “Kezhen” Excellent Talents in IGSNRR, CAS (2017RC101)
the Key Research Program of Frontier Sciences, CAS (QYZDB-SSW-DQC005)
Article History
Received: 23 December 2018
Accepted: 10 September 2019
First Online: 16 October 2019
Compliance with ethical standards
:
: The authors declared that they have no conflict of interest.