Dr. Ivan Tolj is currently an Assistant professor at FESB - Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture. He obtained Doctor of Philosophy (Ph.D) and Master of Engineering (M.Eng.) from University of Split, Croatia. His major areas of research interests include Thermodynamics, PEM fuel cells, hydrogen powered vehicles, MH hydrogen storage, and Renewable energy sources in Mechanical Engineering and Naval Architecture. He has published 63 papers papers in respected international journals. He received Faculty Award in University of Split in 2005, as excellent results achieved during study, and also Recognition as the best students of FESB in 2003. Currently, he is an Assistant Subject Editor of the International Journal of Hydrogen Energy. Dr. M.V. Reddy obtained his Ph. D (2003) with the highest honours in the area of Materials Science and Engineering from the University of Bordeaux, ICMCB-CNRS/ENSCPB, France. From July 2003 to May 2019, he worked at the Department of Materials Science and Engineering, Chemistry and Physics, National University of Singapore (NUS). Dr. Reddy has published around 200 papers in various international journals. These have recently placed him within the top 2% highly cited researchers in Energy. Dr. Reddy is also serving as an editorial advisory board member in Materials Research Bulletin and Journal of Energy Storage (Elsevier) as well as several open access Journals (Materials, Energies and Molecules, MDPI) and the Regional editor: Nanoscience & Nanotechnology-ASIA. Dr Achmad Syaifudin, PhD is now currently an asistant professor at laboratory of Solid Mechanics, department of Mechanical Engineering, Institut Teknologi Sepuluh Nopember, Indonesia. After earning a doctorate from Hokkaido University, Japan, he has 2 research in progress that are included in the national research priorities, i.e. structural integrity of high-speed train structures, and development of PMMA-HA composite for a dental implant. He is a reviewer at several respected international journals (BioMedical Engineering Online, Journal of the Brazilian Society of Mechanical Sciences and Engineering, Scientific Reports, Journal of Mechanical Engineering and Sciences, and Journal of Mechanics). Besides, he is also an editorial board member for journal Rotasi published by Diponegoro University.