1. Department of Material and Life Chemistry, Kanagawa University, 3-27-1, Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686, Japan
2. Sales Planning Division, Sales Engineering Department, Riken Keiki Co., Ltd., 2-7-6, Azusawa, Itabashi-ku, Tokyo 174-8744, Japan