1. Faculty of Engineering, Department of Chemical Engineering; University of Malaya; 50603 Kuala Lumpur Malaysia
2. Department of Chemical and Materials Engineering; University of Alberta; 9107-116 St. Edmonton AB Canada T6G 2V4
3. Energy Futures Lab; Electrical Engineering Building, Imperial College London; South Kensington, London SW7 2AZ U.K.
4. Department of Living and Environmental Science; Fukuoka Women's University; 1-1-1 Kasumigaoka, Higashi-ku 813-8435 Fukuoka Japan