Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The activities of phytohormones during the reproductive phase have been partially clarified in seed physiology while the biological role of plant hormones in oil accumulation during seed development has been investigated in part only. In this research, fatty acid (FA) contents and hormone profiles, including abscisic acid (ABA) and cytokinins (CKs) of seed samples in four different… more Full Text: THE INVOLVEMENT OF ENDOGENOUS PLANT HORMONES IN THE REGULATORY NETWORK OF FATTY ACID BIOSYNTHESIS IN SOYBEAN SEED A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Serrao, Natasha Rosemary, Thesis advisor (ths): Wilson, Chris C, Degree committee member (dgc): Dextrase, Alan, Degree committee member (dgc): Freeland, Joanna, Degree committee member (dgc): Reid, Scott, Degree granting institution (dgg): Trent University Abstract: <p>Recent range reductions of endangered species have been linked to urban development, increased agricultural activities, and introduction of non-native species. I used Redside Dace (Clinostomus elongatus) as a focal species to examine the utility of novel monitoring approaches, and to understand historical and contemporary processes that have influenced their present distribution. I… more Full Text: Conservation genetics of Redside Dace (Clinostomus elongatus): insights from environmental DNA and phylogeography A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>There are three cattail (Typha) taxa in Canada: T. latifolia (native), T. angustifolia (introduced), and their hybrid T. x glauca. The latter is invasive in regions around the Laurentian Great Lakes, and I investigated the potential role that commercial suppliers may be playing in the introduction of non-native Typha by comparing genotypes of North American, European, and commercially… more Full Text: UNDERSTANDING THE ESTABLISHMENT OF TYPHA SPP. IN NORTH AMERICA USING POPULATION GENETICS AND COMMON GARDEN STUDIES A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Shetranjiwalla, Shegufta, Thesis advisor (ths): NARINE, SURESH S, Thesis advisor (ths): Vreugdenhil, Andrew, Degree committee member (dgc): Metcalfe, Chris, Degree committee member (dgc): Dawson, Peter, Degree granting institution (dgg): Trent University Abstract: <p>Thermoplastic poly(ester urethane)s (TPEU)s derived from vegetable oils possess inferior physical properties compared to their entirely petroleum-based counterparts due to the structural limitations and lower reactivity of the precursor lipid-derived monomers. The present work shows that high molecular weight of TPEUs with enhanced performance can be obtained from lipid-derived monomers… more Full Text: Lipid-derived Thermoplastic Poly(ester urethane)s: Effect of Structure on Physical Properties A Dissertation Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in the Faculty of …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Based on an endogenous hormone study, three cytokinin type phytohormones; benzyladenine (BA), trans-zeatin (tZ) and methylthiol trans-zeatin (MeSZ), as well as abscisic acid (ABA) were exogenously added at three concentrations (10-7, 10-6 and 10-5 M) to cultures of Chlorella vulgaris in an attempt to alter growth rate, total lipid and fatty acid yields and fatty acid profile. Growth… more Full Text: HORMONAL ALGAE: A SOURCE OF FUNCTIONAL FATTY ACIDS A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty of Arts and Science TRENT UNIVERSITY Peterborough, …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>This study examines the influence of dissolved organic matter (DOM) on dissolved vanadium (V) speciation in the Churchill River and Great Slave Lake using diffusive gradients in thin film (DGT). Vanadium is commonly found in natural environments such as rivers, lakes and oceans. It regulates normal cell growth, but in excessive amounts, it can have toxic effects on human and aquatic… more Full Text: Relationships between Dissolved Organic Matter and Vanadium Speciation in the Churchill River, MB and the Mackenzie River Basin, NWT using diffusive gradients in thin films (DGT) A Thesis Submitted to the Committee on Graduate Studies in Partial …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>This study assesses the ability of a unicellular protist, Euglena gracilis, to remove Cu and Ni from solution in mono- and bi-metallic systems. Living Euglena cells and non-living Euglena biomass were examined for their capacity to sorb metal ions. Adsorption isotherms were used in batch systems to describe the kinetic and equilibrium characteristics of metal removal. In living systems… more Full Text: 1 Bioremoval of copper and nickel on living and non-living Euglena gracilis 2 3 4 5 A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master 6 of Science in the Faculty of Arts and Sciences 7 8 9 10 11 12 13 14 15 TRENT …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Arctic terrestrial ecosystems have experienced substantial structural and compositional changes in response to warming climate in recent decades, especially the expansion of shrub species in Arctic tundra. Climatic and vegetation changes could feedback to the global climate by changing the carbon balance of Arctic tundra. The objective of this thesis was to investigate the influence of… more Full Text: Carbon Exchange along a Natural Gradient of Deciduous Shrub Coverage in the Low-Arctic A dissertation submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in the Faculty of Arts …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Interseeding legume cover crops in grain corn may improve the environmental sustainability of corn production system in Southern Ontario. This study aimed to assess the effects of legume species, nitrogen (N) fertilizer rate and arbuscular mycorrhizal fungi (AMF) inoculation on biomass and N requirement in a corn-legume system. Corn was grown with red clover (RCl), microclover (MCl),… more Full Text: Legume species, nitrogen rate and arbuscular mycorrhizal fungi inoculation effects on crop biomass and nitrogen requirement in a corn-legume system A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The epoxides of oligomeric self-metathesized soybean oil (MSBO) and cross-metathesized palm oil (PMTAG) and canola oil (CMTAG) containing terminal double bonds were used to produce nonisocyanate polyurethanes (NIPUs) as well as anhydride, amine and thiol-cured epoxies. </p><p>The synthesized NIPUs displayed metal adhesive properties for CMTAG and MSBO with MSBO being favoured… more Full Text: BIO-BASED POLYMERS FROM EPOXIDIZED VEGETABLE OILS MODIFIED BY METATHESIS A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty of Arts and Science TRENT …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>A species of concern is caribou (Rangifer tarandus), a species in decline across most of the circumpolar North, including the island of Newfoundland. Resource exploitation across caribou ranges is projected to accelerate in the coming decades as oil extraction, roads, forest harvesting, and mining encroach upon their habitat. Hydroelectric corridors, in particular, are anticipated to… more Full Text: THE EFFECTS OF HYDROELECTRIC CORRIDORS ON THE DISTRIBUTION OF FEMALE CARIBOU (Rangifer tarandus) ON THE ISLAND OF NEWFOUNDLAND A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfilment of the Requirements for the Degree of Master of …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The flavohemoglobin in Giardia intestinalis (gFlHb) is the only known protozoan member of a protein class typically associated with detoxifying nitric oxide (by oxidation to nitrate) in bacteria and yeast. Mutants of the B10 tyrosine (Y30F) and E11 leucine (L58A), conserved residues thought to influence ligand binding, were expressed and studied using Resonance Raman (RR) spectroscopy.… more Full Text: Mutation of the B10 Tyrosine and E11 Leucine in Giardia intestinalis Flavohemoglobin A thesis submitted to the Committee of Graduate Studies in partial fulfillment of the requirements for the degree of Master of Science in the Faculty of Arts and Science …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Giardia intestinalis is a protozoan parasite that causes waterborne diarrheal disease in animals and humans. It is an unusual eukaryote as it lacks the capacity for heme biosynthesis; nonetheless it encodes heme proteins, including three cytochrome b5 isotypes (gCYTB5s) of similar size. Homology modelling of their structures predicts increased heme pocket polarity compared to mammalian… more Full Text: ELECTROCHEMICAL CHARACTERIZATION OF GIARDIA INTESTINALIS CYTOCHROMES b5 A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Masters of Science in the Faculty of Arts and Science TRENT …
