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An analysis of the aesthetic characteristics and composition of the cedar glade based on a study of two stands in Waukesha County, WisconsinStark, Judith Zentner, January 1976 (has links)
Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 90-91).
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Variation in two families of compounds across stems of western red cedar (Thuja Plicata Donn.).Jiang, Kuo-shii January 1968 (has links)
A quantitative analytical method, using column chromatography, was developed for determining the thujaplicin methyl ethers (T.M.E.) in acetone extracts of western red cedar wood. A quantitative method, using gas-liquid chromatography, was developed for nezukone, while thujaplicins were determined by paper chromatography.
These techniques were used to examine distribution of T.M.E. and thujaplicins across western red cedar stems. Results support the theory that polyphenols are formed in situ at the sapwood-heartwood boundary. The findings also indicate that biochemical mechanisms operate for several years after visible heartwood has been formed. Additionally, the increase in ratios of monohydroxy- and dihydroxy- to nonhydroxylated T.M.E. with wood ageing in the tree suggests a hydroxylation reaction as mechanism for interconversion of some of the lignans in western red cedar. However, this conclusion cannot be made for the hydroxylation of nezukone to β-thujaplicin to β-thujaplicinol.
The thujaplicins were shown to be present only in the heartwood of western red cedar. α-Thujaplicin was not found in the present study, but it was certainly present in a previous study on an American grown western red cedar.
Some characteristic chemical properties of β-thujaplicinol, which has an additional hydroxyl group to the thujaplicins, are studied. Its ferric chelate was found to be unstable to change in pH values of solutions, while thujaplicins complexes are stable. Some observations on the determination of thujaplicin in alkaline solutions, as well as methods for extracting these compounds, are made. / Forestry, Faculty of / Graduate
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Penetrability of a western red cedar stem.Jurazs, Peter Ernest January 1963 (has links)
Penetrability of a single western red cedar (Thuja plicata Donn) stem was investigated using three types of preservatives, namely, coal-tar creosote, 5% penta-chlorophenol solution in oil and 2% Wolman salt (type A) solution in water. The retentions of all three preservatives in the sapwood zone exceeded those in the heartwood. The inner, darker heartwood was superior in penetrability, retaining on the average two to three times more preservatives than did the outer, straw-coloured heartwood.
A multiple linear regression technique was used to evaluate the importance of independent variables as they affected the penetrability of the western red cedar heartwood. The following independent variables were considered: age, distance from the pith, growth rate, percentage of latewood, specific gravity, colour, hot-water solubility, and effective one per cent caustic soda solubility (hot-water solubility subtracted from 1% NaOH solubility) of the samples. The colour variable for creosote and pentachlorophenol, and the age variable for Wolman salt were the most important variables. Colour was measured using a Model "F" Agtron electronic colour instrument which expressed the colour numerically on a continuous scale.
No thujaplicins - natural preservatives - were found in the pith region of the heartwood, nor in the sap-wood. Around the 50-year age mark thujaplicins began to appear, and their content increased towards the bark, reaching a maximum of 0.835 per cent in the zone next to the sapwood.
A fungal infection, believed to be caused by one of the Fungi Imperfect of the white rot type, was found spreading from the pith region outward in the heartwood. In the region where thujaplicin concentration reached 0.361 to 0.549 per cent the fungal infection was not found. / Forestry, Faculty of / Graduate
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A disease of Taxodium known as peckiness also a similar disease of Libocedrus decurrens /Von Schrenk, Hermann, January 1899 (has links)
Thesis (Ph. D.)--Washington University, 1899. / Cover title. "Printed in advance from the eleventh Annual report of the Missouri Botanical Garden."
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A disease of Taxodium known as peckiness also a similar disease of Libocedrus decurrens /Von Schrenk, Hermann, January 1899 (has links)
Thesis (Ph. D.)--Washington University, 1899. / Cover title. "Printed in advance from the eleventh Annual report of the Missouri Botanical Garden."
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Mechanism of induced disease resistance in the bark and sapwood of western redcedarParker, William Harrison January 1972 (has links)
Samples of sapwood and bark of western redcedar were collected at 3 day to 6 week intervals after injury and extracted with water, chloroform and acetone. Extracts were tested for the presence of some common heart-wood compounds and in vitro fungi toxic properties. Extracted samples collected
6 weeks after injury were inoculated with a decay fungus, and the resulting weight losses determined. No heartwood compounds were detected in any extracts, and no extracts were fungi toxic in vitro. Weight losses following
decay of extracted chips indicated that decay resistance was initiated
in the bark and sapwood. Thus, these tissues possess a mechanism of disease resistance induced by injury. It is concluded that this resistance results from the deposition of a toxic substance that is unextractable with water, chloroform, or acetone. The alteration of sapwood, if not the bark, is analogous in certain respects to the formation of reaction zones in the sapwood of various trees, since these zones are induced by injury and are characterized
by abnormal toxin formation. However, the toxins formed in other trees are normal heartwood constituents, and in this respect apparently not parallel to the toxic substance induced in western redcedar. / Forestry, Faculty of / Graduate
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A Mormon melting pot : ethnicity acculturation in Cedar City, Utah, 1880-1915 /Leigh, Vida. January 1990 (has links)
Thesis (M.A.)--Brigham Young University. Dept. of History. / Includes bibliographical references (leaves 165-171).
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A Mormon melting pot ethnicity acculturation in Cedar City, Utah, 1880-1915 /Leigh, Vida. January 1990 (has links)
Thesis (M.A.)--Brigham Young University. Dept. of History. / Electronic thesis. Includes bibliographical references (leaves 165-171). Also available in print ed.
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Proposals for pottery experiences in Cedar Cliff High SchoolStanton, Eleanor Pauline. January 1963 (has links)
Thesis (M.Ed.)--Kutztown State College, 1963. / Source: Masters Abstracts International, Volume: 45-06, page: 2752. Typescript. Includes bibliographical references (leaves [83]-85)
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A study of the growth and development of a gifted child enrolled in a public elementary school in southwestern VirginiaWorley, Charles Thomas January 1958 (has links)
M.S.
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