1. School of Mechanical Engineering
2. Korea University
3. Seoul 136-713, Republic of Korea
4. Department of Mechanical and Industrial Engineering
5. University of Illinois at Chicago
6. Illinois 60607-7022, USA
7. Petrochem. Research Chair
8. Department of Chemistry
9. College of Sci.
10. King Saud University
11. Riyadh 11451, Saudi Arabia