januar Januar Parlaungan Siregar, Unirversity Malaysia Pahang, Malaysia

Dr. Muhammad Shahzad Kamal, King Fahd University of Petroleum and Minerals, United Arab Emirates., United Arab Emirates

Dr. Eng Tedi Kurniawan, Engineering Department Community College of Qatar Lusail Female Campus, Qatar

Prof. Zuchra Helwani, S.T., M.T., Ph.D, University of Riau, Indonesia, Indonesia

Prof. Dr. Harry Agusnar, M.Sc, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, Indonesia, Indonesia

Dr. Nelly Safitri, S.S.T., M.Eng.Sc, Department of Electrical and Computer Engineering, Indonesia, Indonesia

Prof. Dr. Ir. Sri Aprilia, M.T, University Syiah Kuala, Indonesia, Indonesia

Prof. Dr. Kenji Nagata, Nagoya lnstitute of Tecnology, Department of Life Science and Applied Chemistry, Graduate School of Engineering. Gokiso-cho,Showa-ku,Nagoya 466-8555,JAPAN, Japan