Thesis (Ph. D.)--Oregon State University, 2002. / Typescript (photocopy). Includes bibliographical references. Also available via the World Wide Web.

The multiphase Ice River Alkaline Complex is located in the Main Ranges of the Rocky Mountains about 40 km east-southeast of Golden, BC, and comprises, in order of decreasing age: (1) a rhythmically-layered mafic complex; (2) carbonatite (concentrated as a plug in the centre of the complex); (3) a zoned nepheline syenite complex, and; (4) a dyke suite consisting of syenitic dykes, late alkaline lamprophyres, and carbonatites. Petrographic, geochemical, and isotopic analysis of the dykes occurring along the eastern margin of the Ice River Alkaline Complex indicates that the syenitic dykes are the product of extensive fractional crystallization (Zr/Hf = 39 – 80; Nb/Ta = 19 – 305). These syenitic dykes can be subdivided based on mineralogy and composition into a nepheline syenite – nephelinolite group, a syenite – monzodiorite group, and an alkali feldspar granite dyke. The calculated Sm-Nd isochron age of the syenitic dykes (369 ± 15 Ma) is consistent with the accepted age of the complex (359 ± 3 Ma), and is supported by the Rb-Sr errorchron for the same samples, as well as preliminary U-Pb zircon dating. A solidification front (fractional crystallization) model has been described for the development of the Ice River Alkaline Complex, where the syenitic dykes represent structurally controlled periodic discharges from an evolving magma chamber. Isotopic evidence coupled with a U-Th-Pb EPMA date of 165 ± 8 Ma for one of the examined discordant REE-rich carbonatite dykes, indicates that at least some of the carbonatites within the Moose Creek Valley are temporally and magmatically isolated from the Ice River Alkaline complex.

No description available.

This work studies the ability to produce effective surfactant and adhesive formulations using surface active biological material extracted from different biomass sources using alkaline extraction methods. Two urban waste biomass sources were used to produce surfactants, Return Activated Sludge (RAS), and solid Urban Refuse (UR). The third biomass source investigated was isolated mustard protein (MP). RAS and MP extracts were investigated for adhesive production. The results indicate that extracts from the waste biomass sources, RAS and UR, can be combined with a commercial surfactant, sodium dioctyl sulfosuccinate (AOT), to produce surfactants with low interfacial tensions against various oils. These highly surface-active formulations were shown to be useful in the removal of bitumen from contaminated sand. RAS and MP showed potential as protein-based wood adhesives. These sources were used in adhesive formulations to produce a strong bond strength under low-pressure, ambient pressing conditions.

This work studies the ability to produce effective surfactant and adhesive formulations using surface active biological material extracted from different biomass sources using alkaline extraction methods. Two urban waste biomass sources were used to produce surfactants, Return Activated Sludge (RAS), and solid Urban Refuse (UR). The third biomass source investigated was isolated mustard protein (MP). RAS and MP extracts were investigated for adhesive production. The results indicate that extracts from the waste biomass sources, RAS and UR, can be combined with a commercial surfactant, sodium dioctyl sulfosuccinate (AOT), to produce surfactants with low interfacial tensions against various oils. These highly surface-active formulations were shown to be useful in the removal of bitumen from contaminated sand. RAS and MP showed potential as protein-based wood adhesives. These sources were used in adhesive formulations to produce a strong bond strength under low-pressure, ambient pressing conditions.

No description available.

A continuous flow microwave heating system was set up by using one domestic microwave oven (1000W nominal output at 2450MHz). Water was run through the coil centrally located inside the oven cavity for microwave heating. Microwave absorption efficiency was evaluated by measuring inlet and outlet temperatures of coil as a function of system variables. In order to optimize the coil configuration, the influence of tube diameter (6.4, 7.9 and 9.7mm); initial temperature (10, 20 and 30 ºC); number of turns (3.5, 4.5 and 5.5); coil diameter (61.5, 88, 102, 121 and 153 mm) and pitch (16, 18, 20, 22 and 24mm) were evaluated, respectively at different flow rates (240, 270, 300, 330 and 360ml/min). In helical systems, Dean number is used as a measure of secondary flow which enhances mixing of the fluid providing uniform heating even under laminar flow conditions. Results showed that microwave absorption efficiency was a compromise between coil volume and Dean number. Therefore, a helical coil (110 mm high) with a coil diameter of 108 mm, tube diameter of 8.2 mm, 5.5 turns demonstrated the highest efficiency, fast heating rate, more uniform heating and less temperature fluctuations. The optimized coil configuration parameters were used subsequently to set up continuous-flow microwave heating system.

Thesis (M.Sc.). / Written for the School of Dietetics and Human Nutrition. Title from title page of PDF (viewed 2007/08/30). Includes bibliographical references.

Thesis (Ph. D.)--University of Chicago, 1918. / "Private edition, distributed by the University of Chicago Libraries." Includes bibliographical references. Also available on the Internet.

Proefschrift--Utrecht. / "Zusammenfassung" :p. [81]-82. "Litteratuuroverzicht": leaf at end. "Stellingen" ([2] p.) laid in.