1. Faculty of Chemistry, Materials, and Bioengineering; Kansai Univ.; 3-3-35, Yamate-cho Suita Osaka 564-8680 Japan
2. Osaka Research Inst. of Industrial Science and Technology; Morinomiya Center; 1-6-50, Morinomiya Joto-ku Osaka 536-8553 Japan
3. Dept. of Public Health; Kansai Medical Univ.; 2-5-1, Shin-machi Hirakata Osaka 573-1010 Japan
4. Faculty of Engineering; Kitami Inst. of Technology; 165 Koen-cho Kitami Hokkaido 090-8507 Japan