Thesis (M.S.)--University of Wisconsin--Stevens Point, 2009. / Submitted in partial fulfillment of the requirements of the degree Master of Science in Natural Resources (Environmental Education/Interpretation), College of Natural Resources.

Thesis (Ph. D.)--Georgia State University, 2009. / Title from title page (Digital Archive@GSU, viewed July 22, 2010) Sheri Joseph, committee chair; John Holman, Josh Russell, committee members. Includes bibliographical references (p. 38).

Thesis (M.F.A.)--West Virginia University, 2007. / Title from document title page. Document formatted into pages; contains vi, 38 p. : col. ill. Vita. Includes abstract. Includes bibliographical references (p. 36-38).

Im Rahmen dieser Studie wurde die chemolithoautotrophe, Nitrit-oxidierende Bakteriengemeinschaft im Belebungsbecken einer kommunalen Kläranlage und im Biofiltersystem mariner Aquakulturanlagen untersucht. Die Zellaktivität der autotrophen Bakteriengemeinschaft ist über die Assimilation von 13C-CO2, welches den Kulturen in Form von stabilen Isotopen zugefügt wurde, ermittelt worden. Der Einbau von 13C in die Zellbestandteile der autotrophen Nitrit-oxidierenden Bakteriengemeinschaft wurde über die Fettsäureanalytik (FAME-SIP) detektierbar und kann über den Markierungsgrad dargestellt werden. Die Assimilierungen des 13C ermöglichen Rückschlüsse auf die metabolische Zellaktivität der Nitritoxidanten. Der chemotaxonomische Ansatz konnte mit molekularbiologischen Untersuchungen ergänzt werden. Hierzu wurden neu entwickelte spezifische Primer und Sonden für die Gattung Nitrospira eingesetzt. Die Primer sind für die spezifische Amplifikation der 16S rRNA verwendet worden, der direkte Nachweis der Organismen erfolgte über die Fluoreszenz in situ Hybridisierung (FISH) mittels Oligonukleotidsonden.

No description available.

This thesis examines the ways in which historical, cultural, and literary influences have changed the way that Chaucer portrayed Aeneas in both The Legend of Good Women and The House of Fame. The primary texts looked at in comparison are Ovid's Heroides, Virgil's Aeneid, and the historical works of Dares and Dictys. This study concludes that this complex network of forces caused Chaucer to present Aeneas as an overall negative figure in his poetry.

This thesis examines the ways in which historical, cultural, and literary influences have changed the way that Chaucer portrayed Aeneas in the both The Legend of Good Women and The House of Fame. The primary texts looked at in comparison are Ovid's Heroides, Virgil's Aeneid, and the historical works of Dares and Dictys. This study concludes that this complex network of forces caused Chaucer to present Aeneas as an overall negative figure in his poetry.

Thesis (Ed.D.)--Texas Christian University, 2006. / Title from dissertation title page (viewed Feb. 8, 2007). Includes abstract. Includes bibliographical references.

Although soils developed from ultramafic parent materials have significance to agriculture, ecology and health, their bio-geochemistry is poorly understood. The mineralogical and bio-geochemistry of soils formed from the ultramafic parent materials of the Great Dyke, Zimbabwe and Gillespie County, Texas was investigated. The objectives were to determine the mineralogical and bio-geochemical properties of the soils in order to assess the potential impact and challenges to agriculture, and environmental quality. Soil samples were taken from the crest, shoulder, footslope and the toeslope. Chemical analyses were performed by nuclear and spectroscopic techniques. Mineral characterization was conducted by x-ray diffraction (XRD) and spectroscopic techniques. Microbial whole-community structure was determined by the fatty acid methyl esters (FAME) technique. The results indicate wide chemical and mineralogical compositions among the studied sites. The soils contain relatively high concentrations of heavy metals (some sites contain Cr(VI)), but low levels of K and Ca. The highest concentrations of trace metal were associated with chromite, Fe oxides and serpentinite. The concentrations of Mg were higher than those of Ca and varied between Zimbabwe and Texas soils largely due to the parent materials. Unique to these soils is the occurrence of talc, serpentine, chlorite, Fe-rich smectite, amphiboles, pyroxenes, Fe and Cr oxides in relatively large amounts. These soils also lack micas and have neglible amounts of kaolinite and feldspars. Palygorskite and serpentine occurred in specific soil horizons and at specific landscape positions. FAME profiles indicate that the soil microbial community structure is predominantly bacteria and fungi (including arbuscular mycorrhiza fungi) at each landscape position across the transect. Biomarkers for actinomycetes were undetectable. The proportions of Gram-positive bacteria were higher than those of the Gram-negative bacteria. Very low levels of nutrients (Ca and K), higher Mg/Ca molar ratios, and the relatively high concentrations of heavy metals in these soils impact agricultural productivity. High concentrations of heavy metals, the presence of the Cr(VI) as well as its great potential to form in these soils might impact microbial activity and environmental quality. The occurrence of fibrous minerals (e.g serpentine and amphiboles) in these soils will likely impact human health.

Thesis (Ph. D.)--University of Oregon, 2000. / Typescript. Includes vita and abstract. Includes bibliographical references. Also available for download via the World Wide Web; free to University of Oregon users.