Li, Haiyan
Zu, Jiasheng
Zhang, Siqi
Zhu, Jianbo
Liu, Jiaojiao
Xu, Youlong
Funding for this research was provided by:
Natural Science Foundation of Shaanxi Province (2017JQ2018)
Natural Science Foundation of Shaanxi Provincial Education Department (17JK0781)
Undergraduate Platform for Innovation and Entrepreneurship Training Program of Shaanxi Province (201807112)
Article History
Received: 14 September 2018
Accepted: 29 January 2019
First Online: 7 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.