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From Wood Science to Forest Products Research Policy: A Chemical Engineer's
Fulfilling Journey
ByHoward N. Rosen, US Forest Service
Academy Lecture PresentationAt the IAWA/IAWS MeetingMadison, Wisconsin June 24, 2010
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In the Beginning
Apprehensive at a young age
Early realistic goals
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A Mathematical Chemical Engineering Approach
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A New World Opens
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From Refinery to the Forest
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Key Books in Wood Sciencefor my Transformation
1. Textbook of Dendrology by Harlow and Harrar (1958)
2. Textbook of Wood Technology Vol. I Structure, Identification, Uses, and Properties of the Commercial Woods of the United States by Panshin, de Zeeuw, and Brown (1964)
3. Textbook of Wood Technology Vol. II The Physical, Mechanical, and Chemical Properties of the Commercial Woods of the United States by Brown, Panshin, and Forsaith (1952)
4. Principles of Wood Science and Technology: Solid Wood v. 1 by Kollmann and Cote (1968)
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Dimensional Stability: Wood Plastic Composite
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Wood Drying Methods
1. Jet impingement drying2. Solar – dehumidification drying3. Pressure steam drying4. Psychrometry5. Conventional kiln drying with
energy recovery
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Wood Drying Defects
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Warp Casehardening
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Conventional Kiln DryingHavco Wood Products Kilns in Missouri
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Jet Impingement Drying
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Solar Dehumidification Drying
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Beverage Can Solar Collectors
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Pressure Steam Drying
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Wet/Dry Bulb Psychrometry
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Energy Recover in Kiln Drying
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Mathematical Modeling
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Fit of Model to Experimental Data
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Summary Chapters in Books
• Rosen, H.N. 1987. Recent Advances in the drying of solid wood. In: Advances in Drying, Hemisphere Publishing Co
• Rosen, H.N. 1995 Drying of Wood and Wood Products. In: Handbook of Industrial Drying, Marcel Dekker
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1st International Drying SymposiumSkeleftea, Sweden 1987
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IUFRO World CongressKuala Lumpur, Malaysia 2000
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Policy Area of Emphasis
1. Recycling of wood and products2. Biomass conversion - small diameter
trees3. Energy Conversion - Ethanol and
direct burning4. Nanotechnology
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Recycling of Wood and Paper Products
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Diseased Trees
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Forest fires threaten homes
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Thinning Ponderosa Pine,New Mexico(Sept. 11, 2001)
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Biomass conversion
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Biopower from Wood
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The Carbohydrate Economy(Cellulosic Biorefinery)
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Nanotechnolgy
• Scale: 1 nm – 100 nm (1 nm = 1 billionth or 10-9of a meter)
Creating nanoscale size materials does not mean nanotechnology is involved
• Material must have unique properties (e.g. electrical, physical, chemical, optical) that are different that the bulk properties
• Achieving those unique properties must be repeatable and controllable
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Federal Role in Nanotechnology R&D
• Support sustainable forestry and sustainable forest products as a positive economic, social, and ecological force within the US and internationally
• Promote, conduct, and support high risk, fundamental nanotechnology research
• Acquire and maintain state of the art Federal R&D nanotechnology facilities and provide access to unique and cost effective research facilities and capacities with other partners to move the US forest-based economy forward
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Wood Culture Definition:
The human use of and activities with wood, as well as attitudes toward wood, wood products and wood-related environments
“The value and the way we use wood in our society”
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Early Clearing of forests and use of woodin the United States
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Bai doorXiZhou (Happy Village)Yunnan Province,China
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IUFRO 5.10.01 Wood Culture
About the Working Party:
Wood Culture is an interdisciplinary science area which provides a better understanding of the use and social aspects of wood from a cultural perspective.
Research in Wood Culture improves people's relationship with nature and opens new ways to understand wood from an economic, environmental, and social value perspective.
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Thank YouThank You