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Using Acoustic Measurements and Inventory Data to Estimate Stiffness in Standing Douglas-Fir Trees

Creator:: Delgado Trejo, Jorge Luis
Abstract:: Total US lumber production in 2011 was 77.9 million cubic meters. Its primary use was for housing and construction. There is a growing concern that the structural properties for wood are being reduced as trees are harvested at much younger ages as the wood supply shifts from older to younger...
Resource Type:: Masters Thesis
Full Text:: . Overall, the mean density was 0.404; this is lower than reported values for Douglas-fir (0.450). Among

Correlation between mechanical strength of wood and annual ring characteristics in Douglas-fir juvenile and mature wood

Creator:: Choi, Allen Siu Chung
Abstract:: See pdf
Resource Type:: Masters Thesis

Evaluation of a prototype NIR system for Douglas-fir wood density estimation

Creator:: Belart Lengerich, Maria Francisca
Abstract:: Forest products companies in the U.S. face vigorous competition from other wood producers around the world and other industries (steel, aluminum, plastics, composites). To be competitive, forest companies need to control costs, sort and allocate logs to the most appropriate markets, and recover more value at time of harvest. Interest...
Resource Type:: Masters Thesis
Full Text:: for Douglas-fir Wood Density Estimation. Abstract approved: Glen E. Murphy Forest

Wood properties and use of sensor technology to improve optimal bucking and value recovery of Douglas-fir

Creator:: Acuna, Mauricio A.
Abstract:: There are a number of wood properties which affect the quality of forest products such as lumber and pulp. Of these, wood density is considered by some to be the single most important physical characteristic because it is an excellent predictor of strength, stiffness, hardness, and paper-making capacities. Accurately assessing...
Resource Type:: Dissertation
Full Text:: : • It is shown how Douglas-fir wood density can be predicted from near infrared (NIR) spectroscopy

Intra-ring variations in mature Douglas-fir trees from provenance plantations

Creator:: Abdel-Gadir, Abdelazim Yassin
Abstract:: The purpose of this study was to investigate variation in some intra-ring characteristics in juvenile and mature wood from two Douglas-fir genetic plantations established in 1912 by the U.S. Forest Service. The experimental material consisted of progeny from thirty families representing ten provenances (3 families per provenance) grown in two...
Resource Type:: Dissertation

Correlating specific gravities of branch and bole wood in young Douglas fir

Creator:: McKimmy, Milford D., Ching, K. K., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: s_ 9aeee4 of Branch and Bole Wood in Young Douglas Fir Report

Genetic variation of wood density components in coastal Douglas- fir and their relationships to growth rhythm

Creator:: Vargas-Hernandez, Jesus
Abstract:: Overall wood density is a complex trait resulting from the interaction of three components: average earlywood density, average latewood density, and latewood proportion. In order to better understand the genetic control of wood density in juvenile Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), and to assess the utility of information on its...
Resource Type:: Dissertation

Factors related to variation of specific gravity in young-growth Douglas fir

Creator:: McKimmy, Milford D. and Oregon Forest Research Center
Resource Type:: Technical Report
Full Text:: for each decade. Dougla s fir frequently does not de- velop an abrupt tran sition from spring- wood

Comparison of methods of estimating summerwood percentage in wide-ringed, second-growth Douglas-fir

Creator:: Forest Products Laboratory (U.S.) and Smith, Diana M.
Abstract:: Information reviewed and reaffirmed 1960. Original report dated September 1955.
Resource Type:: Technical Report
Full Text:: -ringed Douglas-fir. One method involves ordinary visual, or macroscopic, exam- ination and measurement

Internal moisture relations of standing Douglas-fir trees injected with organic arsenicals

Creator:: Holt, Harvey Allen
Abstract:: Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) ranging from 9.6 to 14.3 inches diameter breast height were treated with the organic arsenicals, monosodium methanearsonate (MSMA) and cacodylic acid. Treatments were applied at monthly intervals from February, 1967 to October, 1968, to ten to 25 trees each month. Treated trees were sampled in...
Resource Type:: Dissertation

ScholarsArchive@OSU

Using Acoustic Measurements and Inventory Data to Estimate Stiffness in Standing Douglas-Fir Trees

Correlation between mechanical strength of wood and annual ring characteristics in Douglas-fir juvenile and mature wood

Evaluation of a prototype NIR system for Douglas-fir wood density estimation

Wood properties and use of sensor technology to improve optimal bucking and value recovery of Douglas-fir

Intra-ring variations in mature Douglas-fir trees from provenance plantations

Correlating specific gravities of branch and bole wood in young Douglas fir

Genetic variation of wood density components in coastal Douglas- fir and their relationships to growth rhythm

Factors related to variation of specific gravity in young-growth Douglas fir

Comparison of methods of estimating summerwood percentage in wide-ringed, second-growth Douglas-fir

Internal moisture relations of standing Douglas-fir trees injected with organic arsenicals

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