Institution: | 1. Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, PR China;2. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China;3. Institute of Cancer Biology and Drug Screening, School of life Sciences, Lanzhou University, Lanzhou 730000, PR China |