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Leo A. Isaac on silviculture : six papers

Creator:: Isaac, Leo A. (Leo Anthony), 1892-1970
Resource Type:: Book
Full Text:: flat areas having air temperatures of 85° to 90°, the author has recorded surface soil temperatures of

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:: characteristic because it is an excellent predictor of strength, stiffness, hardness, and paper-making

The effects of supercritical CO₂ on the bending properties and treatment defects of four refractory wood species

Creator:: Anderson, Matthew E.
Abstract:: It is difficult to treat the heartwood of many wood species with liquid preservatives using conventional liquid processes. Supercritical fluids (SCF) used as carriers of preservatives to impregnate refractory wood species may be an attractive alternative to conventional liquid carriers. While SCF impregnation has many potential advantages, some wood species...
Resource Type:: Masters Thesis
Full Text:: ...................................................................................................... 85 6 FUTURE RECO:MMENDATIONS

Extraction and properties of Douglas-fir sapwood polyphenol oxidase

Creator:: Musbah, Durria Abdel Azim
Abstract:: Chemical stains that develop on commercial woods are problems of great economic importance. The polyphenol oxidases catalyze the oxidation of the phenolics that naturally exist in plants to quinones when the cell structure is disrupted. The quinones produced are further oxidized and polymerized to melanin, the pigment which is responsible...
Resource Type:: Dissertation
Full Text:: , pulp and paper, plywood, furniture,and particleboard produced in the United States. One of the major

Comparative test methods for evaluating shear strength of structural lumber

Creator:: Riyanto, Djoko S.
Abstract:: Five different test methods to determine the parallel-to-grain shear strength of Douglas-fir structural lumber were compared. Four methods assessed the shear strength of lumber sections having a full nominal two by four inch cross-section. These were: three-point bending, four-point bending, five-point bending, and torsion. The fifth method was the ASTM...
Resource Type:: Masters Thesis

Polyphenols from the bark of Douglas-fir and red alder

Creator:: Gonzalez-Laredo, Ruben Francisco
Abstract:: The objectives of this research were to isolate and determine the molecular structures of certain polyphenols in Douglas-fir and red alder barks. The compounds of interest in Douglas-fir were the lignans which are eventually incorporated into the outer bark phlobaphenes. Phlobaphenes are the red colored, alcohol soluble, water insoluble phenolic...
Resource Type:: Dissertation

Studies on thermal degradation of Douglas-fir wood and bark

Creator:: Ali, Mohamed Aslam
Resource Type:: Dissertation

Interactions of ammoniacal copper zinc arsenate (ACZA) wood preservative with Douglas-fir

Creator:: Lebow, Stan T.
Abstract:: The use of the waterborne wood preservative, ammoniacal copper zinc arsenate (ACZA), is likely to increase in the near future because of environmental concerns associated with oilborne preservatives. Developing an understanding of the permanence of this preservative in wood will become important from both environmental and performance standpoints. Conventional thinking...
Resource Type:: Dissertation

Fungitoxicities of NaMDC decomposition products to decay fungi colonizing Doulgas-fir and ponderosa pine wood

Creator:: Canessa, Edwin
Abstract:: Metham sodium or NaMDC is one of the four major soil fumigants that are currently registered for controlling internal decay of wood products in use. Fumigants are used primarily in utility poles but are also applied to piling, timbers and other large wood members. NaMDC must decompose to fungitoxic compounds...
Resource Type:: Masters Thesis

Douglas-fir inner bark procyanidins : sulfonation, isolation and characterization

Creator:: Bae, Youngsoo
Abstract:: See pdf
Resource Type:: Dissertation

ScholarsArchive@OSU

Leo A. Isaac on silviculture : six papers

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

The effects of supercritical CO₂ on the bending properties and treatment defects of four refractory wood species

Extraction and properties of Douglas-fir sapwood polyphenol oxidase

Comparative test methods for evaluating shear strength of structural lumber

Polyphenols from the bark of Douglas-fir and red alder

Studies on thermal degradation of Douglas-fir wood and bark

Interactions of ammoniacal copper zinc arsenate (ACZA) wood preservative with Douglas-fir

Fungitoxicities of NaMDC decomposition products to decay fungi colonizing Doulgas-fir and ponderosa pine wood

Douglas-fir inner bark procyanidins : sulfonation, isolation and characterization

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