1. Department of Forest Biomaterials, North Carolina State University, Campus Box 8005, Raleigh, North Carolina 27695, United States
2. Worfolk Consulting, Raleigh, North Carolina 27610, United States
3. Department of Biological and Agricultural Engineering, North Carolina State University, 3110 Faucette Dr., Raleigh, North Carolina 27695, United States
4. Bioenergy Science and Technology Directorate, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States