# Title 2014 2015 2016 2017 2018 2019
31 China University of Petroleum 665085687421657625834278
32 Beijing Institute of Technology 13031117198607529725864150
33 Harvard University 235542047516475956738064127
34 Babol Noshirvani University of Technology 622737463260433122494118
35 National Center for Nanoscience and Technology 123831391811693951930344118
36 University of London 152231408812715713724944063
37 Stanford University 3437621956170191101533324015
38 Shanghai University 868990058288609723023949
39 Hong Kong Polytechnic University 635575875652457521893941
40 East China University of Science and Technology 150101360210691651426383921
41 Donghua University 824294867936581719733904
42 Jiangsu University of Science & Technology 132714961651208115273879
43 Pennsylvania Commonwealth System of Higher Education 199321661112564776028343787
44 State University System of Florida 174861461710156803229803671
45 Henan University 26773238199719238923660
46 Nanjing University of Science and Technology 7314101708193669927363642
47 University of New South Wales 9068105756500470120213504
48 Hong Kong University of Science and Technology 15294101109184596920223485
49 King Saud University 8135112669642619020303454
50 Ocean University of China 312528702764173111633445