Sun, Lingling
Che, Kui
Zhao, Zhenzhen
Liu, Song
Xing, Xiaoming
Luo, Bing
Funding for this research was provided by:
Doctoral Program of Higher Education (20133706110001)
Natural Science Foundation of Shandong Province (ZR2011CM016)
Science and Technology of Qingdao City, China (13-1-3-50-jch)