10:45 AM - 12:15 PM
*Therese Line Laure Jokam Nenkam1, Jing ZHANG2, Wilson Yetoh Fantong3 (1.Graduate School of Science and Engineering, University of Toyama, 2.Faculty of Science, Academic Assembly, University of Toyama, 3.Institute of Geological and Mining Research, Ministry of Scientific Research and Innovation, Cameroon)