1. Associate Professor, Dept. of Biosystems and Agricultural Engineering, Michigan State Univ., 212 Farrall Hall, East Lansing, MI 48824 (corresponding author).
2. Sales Engineer, Johnson Controls, Peoria, IL.
3. Research Associate Professor, Center for Environmental Biotechnology, The Univ. of Tennessee, 10515 Research Dr., Suite 300, Knoxville, TN 37932.
4. Ph.D. Candidate, Dept. of Biosystems and Agricultural Engineering, Michigan State Univ.,216 Farrall Hall, East Lansing, MI 48824.
5. Emeritus Professor, Dept. of Crop and Soil Sciences, Michigan State Univ., East Lansing, MI 48824.