Index Catalog // ScholarsArchive@OSU

Creator:: Lauer, Chris, McCaulou, Jeff C., Sessions, John, and Capalbo, Susan M.
Abstract:: This study estimates a supply of juniper from private lands to determine how much of the available juniper (Juniperus occidentalis Hook) can be economically supplied at alternative prices if a market was to develop for using juniper as a biomass source. While juniper is native to central Oregon, current land...
Resource Type:: Preprint

Creator:: Temesgen, Hailemariam, Affleck, David, Poudel, Krishna, Gray, Andrew, and Sessions, John
Abstract:: Accurate biomass measurements and analyses are critical components in quantifying carbon stocks and sequestration rates, assessing potential impacts due to climate change, locating bio-energy processing plants, and mapping and planning fuel treatments. To this end, biomass equations will remain a key component of future carbon measurements and estimation. As researchers...
Resource Type:: Article

Creator:: Zhu, J. Y., Chandra, M. Subhosh, Gu, Feng, Gleisner, Roland, Reiner, Rick, Sessions, John, Marrs, Gevan, Gao, Johnway, and Anderson, Dwight
Abstract:: This study demonstrated at the pilot-scale (50 kg) use of Douglas-fir forest harvest residue, an underutilized forest biomass, for the production of high titer and high yield bioethanol using sulfite chemistry without solid–liquor separation and detoxification. Sulfite Pretreatment to Overcome the Recalcitrance of Lignocelluloses (SPORL) was directly applied to the...
Resource Type:: Article

Creator:: Leu, Shao-Yuan, Zhu, J. Y., Gleisner, Roland, Sessions, John, and Marrs, Gevan
Abstract:: Forest harvest residues can be a cost-effective feedstock for a biorefinery, but the high lignin content of forest residues is a major barrier for enzymatic sugar production. Sulfite pretreatment to overcome strong recalcitrance of lignocelluloses (SPORL) was applied to a Douglas-fir (Pseudotsuga menziesii (Mirb) Franco var. menziesii) forest residue in...
Resource Type:: Article

Creator:: Sessions, John
Abstract:: Western land development initiatives by the federal government led to a fragmented ownership in much of western Oregon. A project to examine the feasibility of voluntary land exchanges between public and private owners to increase ecological health of fish and other species in Umpqua Basin while maintaining timber supply has...
Resource Type:: Presentation

Creator:: Zhang, Chao, Zhu, J. Y., Gleisner, Roland, and Sessions, John
Abstract:: Douglas-fir (Pseudotsuga menziesii) forest residues were physically fractionated through sieving. The bark and wood were separated for large-sized fractions (>12.7 mm), and their contents were determined. The chemical compositions of the large fractions were calculated based on the contents and chemical compositions of the bark and wood. The chemical compositions...
Resource Type:: Article

Creator:: Johnson, K. Norman, Beuter, John, Greber, Brian, Lettman, Gary, and Sessions, John
Resource Type:: Technical Report

Creator:: Bettinger, Pete, 1962-, Boston, Kevin, and Sessions, John
Abstract:: Forest management problems with even-flow and adjacency considerations are difficult to solve optimally. A heuristic search intensification process, which uses two types of decision procedures, changes to single-decision choices (1-opt moves) and changes to two-decision choices simultaneously (2-opt moves), was used in an attempt to locate feasible and efficient solutions...
Resource Type:: Article

Creator:: Wilson, Robert L., Dykstra, Dennis P., Sessions, John, and Oregon State University. Forest Research Laboratory
Abstract:: A technique for solving efficiently the catenary problem encountered in surveying with tapes is presented. The theory of the catenary solution is outlined, and our technique is shown to solve correctly the catenary for all conditions. Analysis of error that compared the catenary correction to the more commonly used parabolic...
Resource Type:: Technical Report

Creator:: Sessions, John and Oregon State University. Forest Research Laboratory
Abstract:: In recent years, a great deal of research in North America has been directed toward refining methods of assessing the load-carrying capability of skyline systems. Little effort has been directed, however, toward field measurement of cable tensions for skyline logging systems to facilitate initial tensioning of unloaded skylines or to...
Resource Type:: Technical Report

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