1. Dept. of Chemical and Biomolecular Enginieering; Korea Advanced Institute of Science and Technology; 373-1 Yuseong-gu Daejeon 305-701 South Korea
2. Petroleum and Marine Research Div., Korea Institute of Geoscience and Mineral Resources; Gwahang-no 92, 30, Yuseong-gu Daejeon 305-350 South Korea
3. Graduate School of EEWS, Korea Advanced Institute of Science and Technology; 373-1 Guseong-dong, Yuseong-gu Daejeon 305-701 South Korea