Affiliation: | (1) Department of Environmental Engineering and Science, Feng Chia University, Taichung 407 (Taiwan), TW;(2) Division of Environmental Science and Policy, Nicholas School of the Environment and Earth Science, Duke University, Box 90328, Durham, North Carolina 27708 (USA), Fax + 1 919 668 1799, e-mail: jonf@duke.edu, US |