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Wood quality and strength relationships in Douglas-fir (Pseudotsuga mezieseii (Mirb.) Franco) wood of different maturity

Creator:: Carter, Keoki Apokolani
Abstract:: The objectives of this study were to determine: 1) differences in average wood quality and strength properties of clear-wood specimens sampled from juvenile, transition, and mature wood zones in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) trees from known forest sites; 2) relationships among wood quality properties [specific gravity (SG), rings per...
Resource Type:: Masters Thesis

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

Distribution of preservative chemicals in flakeboard and its effect on board properties and fungal deterioration

Creator:: Jeihooni, Asghar
Abstract:: Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] lumber was converted to flakes, which were dip treated with three concentrations each of copper chrome arsenate Type C (CCA-C), and disodium octaborate tetrahydrate (TIM-BOR). Azaconazole [1-[{2-(2,4-dichloropheny1)-1,3- dioxolan-2-yl}methyl]-1H-1,2,4-triazole] was used as powder. The flakeboard panels (305 x 304 x 13 mm) were made using phenolformaldehyde...
Resource Type:: Dissertation

Chemical characterization of breakdown products involved in detection of incipient decay of wood

Creator:: Holt, Kris E.
Abstract:: See pdf
Resource Type:: Masters Thesis

Fluorescence microscopy for detecting incipient decay and estimating residual strength of wood

Creator:: Lowell, Eini Carole
Abstract:: The objectives of this study were to 1) develop a relatively quick staining procedure that would detect incipient decay by color differentiation under fluorescence, 2) quantitatively assess the amount of decay present with the use of an image analyzer, and 3) re/ate loss in strength at various decay levels to...
Resource Type:: Masters Thesis
Full Text:: : Robert L. Krahmer The objectives of this study were to 1) develop a relatively quick staining procedure

Detecting early decay and estimating residual strength of Douglas-fir heartwood by infrared and ultraviolet spectrophotometry

Creator:: Gibson, David G. (David Glenn), 1958-
Resource Type:: Masters Thesis
Full Text:: Ultraviolet Spectrophotometry Robert L. Krahmer Warm water extracts from small samples of non- decayed and

The relation of wood structure and strain energy release rate in fractured wood-glue composites

Creator:: Gibson, Mark Dariel
Resource Type:: Dissertation
Full Text:: : Robert L. Krahmer Comprehending the anatomical nature of wood and its role in the resultant fracture of

Ultrastructure of parenchyma and sclereids in Douglas-fir [Pseudotsuga menziesii(Mirb.)Franco] bark

Creator:: Dougal, Edward Francis
Abstract:: Because Douglas-fir [Pseudotsuga menziesii(Mirb.)Franco] bark is a raw material produced in our renewable forests along with wood, an understanding of the ultrastructure of bark cells is of paramount importance if wood technologists are to utilize the bark to the fullest potential. The objectives of this study were to develop microscopic...
Resource Type:: Dissertation
Full Text:: : Ultrastructure of Parenchyma and Sclereids in Douglas-fir [Pseudotsuga menziesii(Mirb.)Franco] Bark Robert L

Microdistribution and retention of chloropicrin in wood

Creator:: Goodell, Barry Scott
Abstract:: Quantitative and qualitative information on the retention of chlorinated residues in chloropicrin treated wood is lacking. Retention of chloropicrin and its chemical breakdown products in wood, and the effects of chloropicrin treatment of wood on invading decay fungi are explored in this thesis. Chlorinated residues in amounts up to 1.5%...
Resource Type:: Dissertation
Full Text:: : Le-r-4 4 Robert L. Krahmer Redacted for Privacy and van der Waals forces are responsible, at

Effect of solvent extraction and planing of veneers from Southeast Asian species upon glueline characteristics and bond durability

Creator:: Dougal, Edward Francis
Abstract:: Using Southeast Asian hardwood veneers for exterior plywood siding has caused problems because some species produced quality plywood while other species produced plywood which delaminated soon after being put in service in exterior exposure. This study attempted to improve the durability of glue bonds of some Southeast Asian hardwood veneers...
Resource Type:: Masters Thesis
Full Text:: At this time I wish to thank my major professor, Dr. Robert L. Krahmer, for his guidance throughout

ScholarsArchive@OSU

Wood quality and strength relationships in Douglas-fir (Pseudotsuga mezieseii (Mirb.) Franco) wood of different maturity

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

Distribution of preservative chemicals in flakeboard and its effect on board properties and fungal deterioration

Chemical characterization of breakdown products involved in detection of incipient decay of wood

Fluorescence microscopy for detecting incipient decay and estimating residual strength of wood

Detecting early decay and estimating residual strength of Douglas-fir heartwood by infrared and ultraviolet spectrophotometry

The relation of wood structure and strain energy release rate in fractured wood-glue composites

Ultrastructure of parenchyma and sclereids in Douglas-fir [Pseudotsuga menziesii(Mirb.)Franco] bark

Microdistribution and retention of chloropicrin in wood

Effect of solvent extraction and planing of veneers from Southeast Asian species upon glueline characteristics and bond durability

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