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2016 — Geometric and hydrodynamic modelling of fluid-structural relationships in the southeastern Athabasca Basin, Saskatchewan, Canada, with implications for uranium ore genesisRésumé
The high-grade unconformity-related uranium deposits in the Athabasca Basin in northern Saskatchewan, Canada, generally show close spatial relationships with reactivated basement faults. However, the nature of this relationship has not been well understood. This thesis aims to address this problem through two interrelated components of research. The first phase of the research involved 3-dimensional (3D) geometric modelling of the unconformity surface in the southeastern Athabasca Basin, in conjunction with basement structures interpreted from regional-scale geophysical data. The second phase was accomplished through 2-dimensional (2D) numerical modelling of fluid flow involving basement faults, with thermal convection and faulting-related deformation as the … Lire la suite
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2014 — Optimum Timing for CO2-EOR After Waterflooding and Soaking Effect on Miscible CO2 Flooding in a Tight Sandstone Formation,Résumé
In continuous CO2 secondary flooding, severe viscous fingering and early CO2 breakthrough (BT) occur due to an unfavourable mobility contrast between the injected CO2 and the crude oil. The oil recovery is limited after CO2 BT, which is attributed to the gas channeling problem. In continuous CO2 tertiary flooding, the previously injected water helps to control the mobility of the subsequently injected CO2. On the other hand, it hinders the mutual interactions between the residual oil and the subsequently injected CO2 and thus affects the tertiary oil recovery. This thesis experimentally studied the mutual interactions between the light oil/reservoir brine … Lire la suite
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2016 — Stochastic Modeling and Risk Management for Water Resources Systems Under Changing Climatic ConditionsRésumé
Water resources are indispensable for the sustainable development of the human society. A variety of hydrological modeling and water resources management tools based on simulation and optimization have been developed to address the current water issues worldwide. However, there are many challenges arising from climate change, human disturbances and enormous uncertainties and complexities. Thus, there is a global need for advanced methodologies that can support the modeling and management of water resources systems in an effective and efficient way. In this dissertation research, a spectrum of methods have been developed to deal with the stochastic modeling and risk-based management problems … Lire la suite
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2015 — Characterization of Fluids Associated with Vein-type Uranium Mineralization in the Beaverlodge Uranium District, Northern Saskatchewan: Field, Petrographic, Fluid Inclusion and C-O Isotope StudiesRésumé
The Beaverlodge uranium district north of Lake Athabasca in northern Saskatchewan is known for vein-type uranium mineralization hosted in Archean to Proterozoic granitic and metamorphic rocks. Most of the Beaverlodge deposits are spatially related to major structures, and hosted by granitic rocks of various ages (and albitite derived from them) and by ca. 2.33 Ga Murmac Bay group amphibolite, both of which are unconformably overlain locally by deformed but unmetamorphosed redbeds of the ca. 1.82 Ga Martin group, and by the weakly deformed to non-deformed ca. 1.75-1.5 Ga Athabasca group. The uranium mineralization in the Beaverlodge uranium district is mainly … Lire la suite
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2018 — Saskatchewan Sitcoms and Adult Learning: Insights from Chinese International StudentsRésumé
This study focused on one common component of popular culture, the popular television sitcom, to explore its influences on Chinese adult learners in Canada. Specifically, I researched how Canadian popular television sitcoms inform international Chinese adults with respect to their understanding of Canadian national identity, and subsequently how they draw on it in their learning, particularly in regard to understanding issues of multiculturalism and acculturation. The purposes of this study were: to find out how two Canadian sitcoms – Corner Gas and Little Mosque on the Prairie: a) can serve to raise audiences’ thinking about Canadian national identities, b) can … Lire la suite
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2012 — Measurement of Single Positive Pion Production in Neutrino Neutral Current Interactions in the ND280 Detector and Particle Identification with the Fine Grained Detector at T2KRésumé
In this thesis, I present a measurement of the absolute inclusive cross section of single + production induced by neutral current interactions ( (NCS +)). I also present a method to identify particles stopping in the Fine Grained Detectors (FGDs). An introductory description of neutrino physics, as well as of the T2K experiment and the ND280 tracker system are included for completeness. Other important contributions to the development of the FGDs, including the selection and characterization of the wavelength shifting bers used in these detectors, as well as their commissioning at JPARC, are also discussed in the thesis. The particle … Lire la suite
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2023 — An exploratory consideration of cognition and physiology in athletes following concussionRésumé
A mild traumatic brain injury (mTBI), colloquially known as a concussion, is an injury of the brain that often results in significant functional impairment for days, weeks, or even months. While the most common symptoms of concussion have been well documented and studies frequently note a deficit in either higher-level cognitive functioning and autonomic physiological control, there is a lack of research describing the effect of concussion on executive functioning and heart rate variability (HRV). The aim of this study was to address gaps in literature by describing changes in an individual’s executive functioning and physiology simultaneously following a concussion … Lire la suite
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2014 — Experimental, Theoretical, and Numerical Studies of Solvent-Based Heavy Oil Recovery ProcessesRésumé
This thesis presents some experimental, theoretical, and numerical studies of the solvent-based heavy oil recovery processes. A comprehensive review of the solventbased heavy oil recovery processes is provided by conducting a literature search of over 100 most recent and significant technical publications. A number of experimental, theoretical and numerical studies of solvent-based methods are reviewed, from physical and theoretical modeling to numerical simulations. Some important factors or major phenomena as well as their effects on the solvent-based methods are analyzed. Experimental and theoretical studies of the VAPEX heavy oil recovery process were conducted. More specifically, a total of four VAPEX … Lire la suite
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2020 — Experimental Study About Radial Viscous Fingering in Heavy Oil ReservoirRésumé
Viscous fingering is an unstable flow phenomenon between two fluids with different viscosities, and it is widely found in many kinds of viscous displacements in nature, such as the flow of rainwater or contaminants through soil and flow of oil or natural gas through reservoirs. In petroleum industry, viscous fingering will be encountered frequently during waterflooding or chemical flooding in heavy oil production. Because of the exist of viscous fingering, the breakthrough time is shorted significantly, which causes oil and natural gas production decreases significantly. Many researches have been conducted to further study the mechanism of viscous fingering. Hele-Shaw model, … Lire la suite
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2017 — Reading, Writing and a Heretic: Problematizing Assumptions in New Testament CanonizationRésumé
This thesis examines the influences behind the canonization of the New Testament literature through examinations of Hellenistic educational and textual practices, Jewish scribalism, and scholarly disputes between early Christian intellectuals. This is to problematize the assumption of the development of the New Testament as something orderly and vectored. To that end, first, Hellenistic textual and educational practices will be examined to show how Homeric poetry was redacted and collected in the academy, with specific eyes to the creation of lists by Cicero and Quintilian for lists of books to read in a liberal education. Secondly, this process of scholarship continues … Lire la suite
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2017 — Probing Detector for Image Local Frequency AnalysisRésumé
The Fourier transform is a century-old mathematical theory. Among many of its applications, it has been the foundation of signal processing since the middle of 20th century. Specifically, it has been hugely successful to perform voice recognition using frequency spectrum. However, its application in 2D image analysis is limited. This observation motivated the research presented in this thesis. Most natural images contain non-stationary signals that require local image analysis techniques. The primary approach is the Short Time Fourier Transform (STFT), most notably the Gabor transform. A critical analysis presented in this thesis reveals that Gabor transform produces a spectrum with … Lire la suite
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2018 — Experimental and Prediction Approaches to Determine Dissociation Constants (pKa) of AminesRésumé
This research work studied the dissociation constants (pKa) of eight amines [N-(2- Aminoethyl)-1,3-propanediamine, Bis[2-(N,N-dimethylamino)ethyl] ether, 2- Methylpentamethylene diamine, N,N-Dimethyldipropylenetriamine, 3,3’-Diamino-Nmethyldipropylamine, 2-[2-(Dimethylamino)ethoxy]ethanol, 2-(Dibutylamino)ethanol, and N-Propylethanolamine] within a temperature range of 298.15K – 313.15K, using the potentiometric titration method. The thermodynamic quantities including the standard state enthalpy change (ΔH0) and the standard state entropy change (Δ𝑆0) for the dissociation process were determined via Van’t Hoff equation. The pKa values reflected the basicity of amines and results showed that all studied amines had a stronger basicity than methyldiethanolamine (MDEA) The pKa values of series of amines (25 compounds) relevant to CO2 capture were … Lire la suite
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2018 — Comprehensive Evaluation of the Physical and Chemical Properties of 1-dimethylamino-2-propanol for Post Combustion CO2 CaptureRésumé
Recently the worsening global warming issue caused by emissions and accumulation of greenhouse gases in the atmosphere has become a subject of public concern. Carbon dioxide (CO2) is widely considered as the predominant contributor of greenhouse gases. The absorption of CO2 into aqueous amine solution is regarded to be one of the most promising technologies for CO2 capture due to its maturity, cost effectiveness, and capacity to handle large amounts of exhaust streams. Recently, a new tertiary amine, 1- dimethylamino-2-propanol (1DMA2P), has drawn significant attention for its good performance in capturing CO2. The objectives of the overall work are to … Lire la suite
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2019 — Inconsistency of Statistical Tests to Discriminate Lifetime Distributions and lines of Indistinguishabilty in Uniform MetricRésumé
The lifetime of a product can be measured in miles, hours, cycles or any other metric that applies to the success of a particular product. The lifetime distribution method is widely used in the engineering and biomedical applications; In this thesis, I focus on the three most commonly used lifetime distributions: Gamma distribution, Weibull distribution, and Generalized Exponential distribution. Although all three distributions have successfully served as population models for evaluating the lifetime of product, they have different characteristics. Therefore, it is necessary to distinguish the correct model specifications in the lifetime analysis. My thesis investigates the inconsistency of the … Lire la suite
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2023 — Characterization of fracture networks using tracer tests in a hydrocarbon reservoirRésumé
In a hydrocarbon reservoir, natural and/or hydraulic fractures can not only provide main paths for fluid flow and increase formation permeability, but also complicate flow behaviour and production performance. Tracer tests have been widely used for reservoir characterization to determine residual oil saturation, reservoir wettability, and fluid flow paths; however, few attempts have been made to characterize complex fracture networks by quantifying tracer transport behaviour due to the associated technical challenges including the composite effects of fluid flow and geomechanical dynamics, fracture geometries, and tracer transport mechanisms. It is, therefore, of fundamental and practical significance to quantitatively identify such fracture … Lire la suite