1. Graduate research assistant, Department of Agricultural and Biosystems Engineering, South Dakota State University, Brookings, SD.
2. Professor, Department of Agricultural and Biosystems Engineering, South Dakota State University, Brookings, SD.
3. Agricultural and Bioprocess Engineer, USDA-ARS, North Central Agricultural Research Laboratory, Brookings, SD. Mention of a trade name, propriety product or specific equipment does not constitute a guarantee or warranty by the United States Department of Agriculture and does not imply approval of a product to the exclusion of others that may be suitable.
4. Corresponding author. Phone: 604-693-3241. Fax: 605-693-5240. E-mail address: kurt.rosentrater@ars.usda.gov