1. Dept. of Food Engineering, Faculty of Engineering, King Mongkut’s Univ. of Technology Thonburi, 126 Pracha-u-Tid Rd., Bangmod, Tungkru, Bangkok 10140, Thailand.
2. Dept. of Physics, Syracuse Univ., Syracuse, NY 13244-1130.
3. Office of Education, Faculty of Engineering, Burapha Univ., 169 Long-Hard Bangsaen Rd., Saensook, Muang, Chon Buri 20131, Thailand; Dept. of Food Engineering, Faculty of Engineering, King Mongkut’s Univ. of Technology Thonburi, 126 Pracha-u-Tid Rd., Bangmod, Tungkru, Bangkok 10140, Thailand.