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Creator:: Khasawneh, Mohammad A.
Abstract:: This study identified new compounds with pest control activities. The two sources of candidates that were followed here were the main heartwood extract of Alaska Yellow Cedar (AYC) constituents and several semi-synthetic counterparts. Five compounds were isolated and identified for the first time in AYC heartwood in this research: two...
Resource Type:: Dissertation
Full Text:: approved: Joseph fJ Karchesy This study identified new compounds with pest control activities. The two

Creator:: Chen, Jie, 1957-
Resource Type:: Dissertation
Full Text:: Joseph J. Karchesy, my major professor, for providing guidance, suggestions and facilities during my

Creator:: Sumadiwangsa, Suwardi
Abstract:: It was the goal of this research to determine if sago starch could be used to replace wheat flour as an adhesive extender of Urea-formaldehyde plywood adhesives through either chemical modification of the starch or modification of the adhesive formulation strategy. Guiding principles of the research would be that a...
Resource Type:: Dissertation

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

Creator:: Ghodoussi, Vahid
Abstract:: A resin was synthesized by reacting glucose with urea and phenol under acidic conditions. To better understand the structure of this polymer and the mechanism of its formation, this study was undertaken. It was observed that although the polymer backbone is comprised of a carbohydrate, glucose is not incorporated in...
Resource Type:: Dissertation

Creator:: Stewart, Scott R.
Abstract:: Wetland soils with complex stratigraphy and redoximorphic features occur on the margin of the Willamette Valley, Oregon. In the Jackson-Frazier wetland, vertisols show three distinct stratigraphic units that rest uncomformably upon each other and correspond to the Bashaw series Bss, 2Bt and 3BC horizons. Holocene alluvium deposited as distal alluvial...
Resource Type:: Dissertation

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