1Department of Microbiology, Chungbuk National University, Cheongju 361-763, Republic of Korea,
2KoreaInstitute of Geoscience and Mineral Resources, Daejeon 305-350, Republic of Korea,
3Department of Biochemistry and Microbiology, Biotechnology Center for Agriculture and the Environment, Rutgers, The State University of New Jersey, New Brunswick, NJ, 08901, USA,
4Department of Information & Statistics, Chungbuk National University, Cheongju 361-763, Republic of Korea,
5Faculty of Earth Systems and Environmental Sciences, Chonnam National University, Gwangju 500-757, Republic of Korea,
6School of Civil and Environmental Engineering, Kunsan National University, Jeonbuk 573-701, Republic of Korea
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Corresponding author:
Sung-Keun Rhee , Tel: +82-43-261-2300,