1. Faculty of Science and Technology, Oita University, 700 Dannoharu, Oita 870-1192, Japan
2. Graduate School of Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan
3. Department of Chemical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan