Dept. of Chemical and Biomolecular Engineering, Hong Kong University of Science & Technology, Clear Water Bay Kowloon, Hong Kong, Fax: +852 2358 0054, Tel: +852 2358 7138, Email: kechengh@ust.hk
A. de Haan
Dept. of Chemical Engineering and Chemistry, Eindhoven University of Technology, Postbus 513, 5600 MB Eindhoven, Netherlands, Fax: +31 40-246 3966, Tel: +31 40-247 5259, Email: a.b.dehaan@tue.nl
C. Tien
Dept. of Biomedical and Chemical Eng., Syracuse University, Link Hall, Syracuse, NY 13244-1190, USA, Fax: +1 315 443 1243, Tel: +1 315 443 4050, Email: ctien@mailbox.syr.edu