1. Professor, Graduate Institute of Evnvironmental Engineering, National Taiwan University, 71 Chou-Shan Rd., Taipei, Chinese Taiwan (E-mail: pcchiang@ntu.edu.tw)
2. Professor, Department of Biochemistry, Taipei Medical University, 250 Wu-Hsing St., Taipei, Chinese Taiwan (E-mail: eechang@tmu.edu.tw)
3. Donald C. Phillips Professor, Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USA (E-mail: huang@ce.udel.edu)