Affiliation: | (1) Division of Chemical Engineering, Pusan National University, Jangjeong-dong, Geumjeong-gu, Busan, 609-735, Korea;(2) Department of Materials Science and Engineering, Hongik University, 300 Shian, Yongi, Chungnam, 339-701, Korea;(3) Department of Chemical Engineering, Kongju National University, 275, Budae-dong, Cheonan, Chungnam, 330-717, Korea |