1. Department of Chemical Engineering, College of Engineering, University of Akron, Akron, OH 44325-3906.
2. Current address: Riewkim Research and Associates, 2174 Rickel Drive, Akron, OH 44333-2917.
3. BFGoodrich Company, Brecksville, OH 44141-3289
4. Department of Mechanical Engineering, Imperial College of Science, Technology, and Medicine, Exhibition Road, London SW7 2BX, United Kingdom