1. Department of Materials Science and Technology; Faculty of Engineering, Nagaoka University of Technology; Nagaoka Niigata 940-2188 Japan
2. School of Chemical Engineering; Hanoi University of Science and Technology; Hanoi Vietnam
3. UMG-ABS, Ltd. Co.; 525-14 Okiube Ube Yamaguchi 755-8580 Japan
4. Department of Chemical Science and Engineering; Tokyo National College of Technology; Hachioji Tokyo 193-0997 Japan