1. School of Chemical and Biological
Engineering, Seoul National University,
Seoul 151-744, Republic of Korea
2. Department of Chemistry, University of Texas at Dallas, Richardson, Texas 75080,
United States
3. Department
of Chemical Engineering, Kangwon National University, Kangwon-Do 245-711, Republic
of Korea
4. Department of
Chemical Engineering, Kangwon National University, Kangwon-Do 200-701, Republic
of Korea