Affiliation: | 1. Department of Chemical Engineering, Kongju National University, 275 Budae-dong, Cheonan-si, Seobuk-gu, Chungcheongnam-do, 331-717, Korea 2. Department of Mechanical Engineering, Kongju National University, 275 Budae-dong, Cheonan-si, Seobuk-gu, Chungcheongnam-do, 331-717, Korea
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