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Skip to Search Results- 1Beaulieu, Françoise.
- 1Brennan, Lesley Jean
- 1Carew, Michael W
- 1Donner, Mark
- 1Fernandopulle, Shimal Chamikara
- 1Fortin, Barbra Linda
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Natural and anthropogenic inputs of arsenic and selenium to the environment in the Athabasca Bituminous Sands Region
DownloadSpring 2019
Industrial development of the Athabasca Bituminous Sands (ABS) in northern Alberta, Canada, has raised concerns that emissions of arsenic and selenium to the surrounding landscape and waterbodies have been increasing over time. To test this hypothesis, a comprehensive study of arsenic and...
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Antioxidants in Chicken Egg Yolk: Effects of Cooking, Storage and Gastrointestinal Digestion
DownloadSpring 2015
Nimalaratne, Liyana Arachchilage Chamila K.
Eggs are one of the most nutritious and economically affordable foods. They contain high quality proteins and lipids and serve as an important source of vitamins and minerals. Despite the nutritional importance, the egg industry is vulnerable to the consumers’ perception about egg cholesterol and...
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Fall 2015
Selenium is an essential trace element nutrient for human life, but it can be extremely toxic if taken excess. Various adsorbents have been applied for the removal of selenium from water but performed poorly in the removal of Se (VI), which is more bioavailable and more difficult to remove....
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Effects of dietary combination of 25-OH-D3 and canthaxanthin on performance, meat yield, bone characteristics and antioxidant status of broilers housed under commercial and experimental conditions
DownloadFall 2014
The effects of 25-hydroxy vitamin D3 (25-OH-D3), canthaxanthin (CX), alone and in combination on broiler performance, meat yield, oxidative status, skin colour and bone characteristics were evaluated in a field trial in Colombia and also under controlled experimental conditions in Canada. The...
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Water-Dispersible Magnetic Particle-Graphene Oxide Composites: Synthesis, Characterization and Application in the Removal of Selenium Oxyanions
DownloadSpring 2014
Selenium is toxic in excess with a high mobility in water. Existing adsorbents only show some removal capacity for selenite but perform poorly (typical removal percentage < 50 %) for selenate, the more bioavailable and soluble species. In this thesis, two Magnetic particle-Graphene Oxide...
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Spring 2014
Arsenic is a potent environmental contaminant and human carcinogen, occurring naturally in the earth’s crust and entering the food chain through leeching into the water supply. Upon entering the body, inorganic arsenic is methylated to mono- and di-methylated forms, the trivalent versions of...
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Fall 2013
Glomus cells of the carotid body are peripheral chemoreceptors that detect changes in arterial oxygen levels. Hypoxia suppresses oxygen-sensitive K+ channels in glomus cells, resulting in cytosolic Ca2+ ([Ca2+]i) elevation in glomus cells via the activation of voltage-gated Ca2+ channels. The...
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CHROMATOGRAPHY APPROACHES FOR ANALYZING FRYING OILS AND ASSESSING THE ANTIOXIDATIVE ABILITY OF SITOSTEROL
DownloadFall 2013
The novel utility of sitosterol as an antioxidant in frying oils is explained mechanistically based on physical organic chemistry principles. The antioxidative effect of sitosterol is attributed to the conversion of sterol to steradiene by the 1, 2 elimination of water, which may be catalyzed by...
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Fall 2012
Fernandopulle, Shimal Chamikara
The first chapter of this thesis describes the development of a general route for the generation of selenium stabilized carbanions via a method that bypasses acid catalyzed formation of selenoacetals. Aldehydes are first converted into α-hydroxystannanes by nucleophilic addition of Bu3SnLi. The...
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Unique cellular interactions between the obligate intracellular bacteria Wolbachia pipientis and its insect host
DownloadFall 2011
Wolbachia are maternally inherited obligate intracellular bacteria found in arthropods, where they induce feminization, male-killing, parthenogenesis, and cytoplasmic incompatibility (CI). CI is conditional male sterility, in which Wolbachia-infected males successfully mate with infected females,...