Index Catalog // Hyrax

Polyphenols from the bark of Douglas-fir and red alder

O Criador:: 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

O Criador:: Ali, Mohamed Aslam
Resource Type:: Dissertation

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

O Criador:: 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

Extraction and properties of Douglas-fir sapwood polyphenol oxidase

O Criador:: 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

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

O Criador:: Bae, Youngsoo
Abstract:: See pdf
Resource Type:: Dissertation

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

O Criador:: 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

Microdistribution and retention of chloropicrin in wood

O Criador:: 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

Anatomical and chemical characteristics of the Douglas-fir (Pseudotsuga menziesii (mirb.) Franko) phellem cell

O Criador:: Litvay, John Dennis
Abstract:: The objectives of this study were to 1) characterize the layering in the wall of the Douglas-fir (Pseudotsuga. menziesii (Mirb. ) Franco) phellem cell, 2) determine the pitting present in this cell wall and 3) determine what compounds are present in the middle lamella of this cell. To accomplish the...
Resource Type:: Dissertation

Douglas-fir bark : water-soluble carbohydrates and alkaline degradation of a xylan

O Criador:: Zerrudo, Jose Velmonte
Resource Type:: Dissertation

Thermal characteristics of Douglas-fir bark fiber 25⁰ to 250⁰C

O Criador:: Short, Paul Henry
Resource Type:: Dissertation

Hyrax

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

Extraction and properties of Douglas-fir sapwood polyphenol oxidase

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

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

Microdistribution and retention of chloropicrin in wood

Anatomical and chemical characteristics of the Douglas-fir (Pseudotsuga menziesii (mirb.) Franko) phellem cell

Douglas-fir bark : water-soluble carbohydrates and alkaline degradation of a xylan

Thermal characteristics of Douglas-fir bark fiber 25⁰ to 250⁰C

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