1. Dept. of Chemical Engineering, National Taiwan Univ. of Science and Technology, Taipei, 43 Keelung Rd., Section 4, 106 Taiwan.
2. Dept. of Chemical Engineering, National Taiwan Univ. of Science and Technology, 43 Keelung Rd., Section 4, Taipei, 106 Taiwan.
3. Dept. of Chemical Engineering, National Taiwan Univ. of Science and Technology, 43 Keelung Rd., Section 4, Taipei, 106 Taiwan (corresponding author).