1. Assistant Professor, Dept. of Bioengineering, Tatung Univ., Taipei, Taiwan, R.O.C.
2. Associate Professor, Dept. of Earth and Environmental Sciences, National Chung Cheng Univ., 168, University Rd., Min-Hsiung, Chiayi, Taiwan, R.O.C. (corresponding author). E-mail: bmhsu@eq.ccu.edu.tw
3. Graduate Student, Dept. of Bioengineering, Tatung Univ., Taipei, Taiwan, R.O.C.