Institute of Geology and Geophysics, Chinese Academy of Sciences

Professor of Geochemistry, University of Science and Technology of China

University Distinguished Professor, Miami University

Associate Professor-Geology, Faculdade de Ciências da Universidade de Lisboa

Associate Professor, School of Geoscience, University of the Witwatersrand

Professor (Assistant), Khalifa University, UAE

University of Washington

Department of Resources Engineering, National Cheng Kung University