1. Mitsui Engineering and Shipbuilding Company Ltd., ST Nishikasai Bld., 8-4-6, Nishikasai, Edogawa-ku, Tokyo 134-0088, Japan, Nippon Coal Oil Company Ltd., KS Bld., Sanban-cho, Chiyoda-ku, Tokyo 102-0075, Japan, Nippon Steel Corporation, 20-1, Shintomi, Futtsu, Chiba 293-8511, Japan, Mitsui SRC Development Company Ltd., Nibiki Bld., 1-15, Awajicho, Chiyoda-ku, Tokyo 101-0063, Japan, and Department of Applied Chemistry, Kyushu University, Fukuoka 812-8581, Japan