1. Graduate Student, Department of Biosystems Engineering, Chungbuk National University, Cheongju 28644, Korea
2. Assistant Manager, Teejet Technologies, Inchun 21635, Korea
3. Professor, Department of Bio-Industrial Machinery Engineering, Jeonbuk National, University Jeonju 54896, Korea
4. Professor, Department of Biosystems Engineering, Chungbuk National University, Cheongju 28644, Korea