1. Professor, Dept. of Marine Environmental Engineering, National Kaohsiung Marine Univ., 142 Haijhuan Rd., Nanzih, Kaohsiung 81157, Taiwan.
2. Professor, Research Fellow, Dept. of Marine Environmental Engineering, National Kaohsiung Marine Univ., 142 Haijhuan Rd., Nanzih, Kaohsiung 81157, Taiwan (corresponding author).