Science (Faculty of): Recent submissions
Now showing items 21-40 of 3013
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Hydrogeochemistry and Trace Element Mobility in an Acidic High-Sulfide Tailings Impoundment After 40 Years of Oxidation
(University of Waterloo, 2024-01-25)Abandoned mine sites can create a legacy environmental contamination issue when the generation of acid mine drainage is allowed to continue with insufficient or absent remediation measures. The South Bay mine, a former ... -
Exploration of the Underlying Visual Perceptual and Cognitive Mechanisms of Dynamic Visual Acuity
(University of Waterloo, 2024-01-25)Purpose: Dynamic visual acuity (dynamic VA) is a complex, perceptual ability of the visual system that involves determining fine details of objects as they move across one’s field of view (1–4). Over the years, there has ... -
Bootstrapping Quantum Field Theories
(University of Waterloo, 2024-01-23)This thesis compiles a few developments on the S-matrix bootstrap, conformal field theory, and integrability in N = 4 SYM. After an introduction contextualizing the various works that compose this thesis, we present a ... -
Low-Dimensional Nanostructured Catalysts of Copper Oxides and Nickel Oxides Supported on Graphene and Their Applications in Biosensing and Photoelectrochemical Hydrogen Evolution
(University of Waterloo, 2024-01-22)Cuprous oxide (Cu2O) nanomaterials provide a versatile platform for building non-enzymatic glucose sensors. In particular, Cu2O nanocubes with controllable sizes and distributions can be deposited electrochemically on a ... -
Size-Specific ZrO₂ and HfₓZr₁₋ₓO₂ Nanoclusters and Their Magnetic and Nanodevice Applications
(University of Waterloo, 2024-01-22)Nanoclusters, generally defined as assemblies of a discrete number of atoms or molecules in the size range of 1-10 nm, have attracted a lot of attention due to their unique properties that bridge the gap between isolated ... -
Microbial Community Compositional Stability in Agricultural Soils During Freeze-Thaw and Fertilizer Stress
(University of Waterloo, 2024-01-22)Microbial activity persists in cold region agricultural soils during the fall, winter, and spring (i.e., non-growing season) and frozen condition, with peak activity during thaw events. Climate change is expected to change ... -
Advanced Electrolyte Design for Long-Life and High-Areal-Capacity Divalent Metal Batteries
(University of Waterloo, 2024-01-22)Net-zero carbon dioxide emission demands clean renewable energy, while harnessing it requires electrochemical storage devices with high energy density, safety and affordability. To achieve decarbonization, much effort is ... -
Oxygen Reduction Reaction on Doped Lanthanum Chromate Perovskites
(University of Waterloo, 2024-01-19)The oxygen reduction reaction (ORR) plays a pivotal role in fuel cell technology and the generation of clean oxidizing agents. This reaction can proceed via two distinct pathways. The complete ORR pathway involves reducing ... -
Towards Photonic Chip Integration of an Oscillating Photonic Bell State from a Semiconductor Quantum Dot
(University of Waterloo, 2024-01-18)The demand for entangled photon sources has been growing in all areas of quantum information technologies. However, many modern single-photon sources suffer from fundamental limitations which limit their ability to produce ... -
Integrated hydrologic model calibration under non-stationary climates
(University of Waterloo, 2024-01-17)With global climate change, quantifying water availability for management under non-stationary conditions is, and will continue to be, a major challenge. When hydrologic models are calibrated to historic climatic conditions, ... -
Hunting for the Primordial Quenched Population in 2 < z < 2.5 COSMOS Protoclusters
(University of Waterloo, 2024-01-17)We present an analysis of the galaxy stellar mass function (SMF) of 14 known protoclusters between 2.0 < z < 2.5 in the COSMOS field, down to a mass limit of 10⁹ᐧ⁵ M⊙. We use existing photometric redshifts with a statistical ... -
Probing the interactions that drive RNA binding and self-association of hnRNPA1 implicated in neurodegeneration
(University of Waterloo, 2024-01-17)The heteronuclear ribonucleoprotein A1 (hnRNPA1 or A1) is associated with the pathology of different diseases, including neurological disorders and cancers. In particular, the aggregation and dysfunction of A1 has been ... -
Two-Colour Nonlinear Amplification for Mid-infrared Generation by Difference Frequency Generation
(University of Waterloo, 2024-01-16)In this thesis, I discuss the development of a two-colour laser system which uses an all-normal dispersion fiber laser in combination with a gain-managed nonlinear amplifier as its broadband source. The goal is to develop ... -
Modelling effects of stormwater best management practices on urban stormwater runoff phosphorus
(University of Waterloo, 2024-01-15)Phosphorus (P) is a key limiting nutrient for algal growth in freshwater whose excess loading to freshwater bodies contributes to cultural eutrophication and the associated symptoms of water quality deterioration. Urban ... -
An experimental study of single hole spin qubit coherence in a GaAs/AlGaAs double quantum dot device
(University of Waterloo, 2024-01-15)This thesis discusses a series of experiments performed on a p-type laterally-gated GaAs/AlGaAs double quantum dot device. The main purpose of these experiments was to explore the potential of a theoretically-predicted ... -
Imaging Molecular Structures with Femtosecond Laser Pulses: Experimental Apparatus Development and Computational Geometry Reconstruction
(University of Waterloo, 2024-01-15)A joint facility with the University of Waterloo and the Advanced Laser Light Source has been constructed, in order to explore the behavior of ions and electrons during ultrafast molecular dynamics. The sophisticated ... -
Assessing the Accuracy of Cosmological Parameters Estimated from Velocity – Density Comparisons
(University of Waterloo, 2024-01-10)A promising method for measuring the cosmological parameter combination fσ₈ is to compare observed peculiar velocities with peculiar velocities predicted from a galaxy density field using linear perturbation theory, known ... -
Implementation of a Universal Fine-Structure Splitting Eraser for Quantum Dots
(University of Waterloo, 2024-01-04)Entangled photons are an important resource for different applications in quantum computation, quantum information, and quantum communication. Sources based on semiconductor quantum dots have successfully obtained on-demand, ... -
Characterization of Novel Protease Flagellinolysin in Pseudoalteromonas tunicata
(University of Waterloo, 2024-01-03)Flagellinolysins are a family of novel enzymes that act both as structural flagellins and proteases. Although previously identified and shown to be both structurally integrated into filaments and proteolytically active, ... -
Investigating the enhancement of visual cortex plasticity through non-invasive brain stimulation
(University of Waterloo, 2024-01-02)Purpose: (1) To investigate the effects of various non-invasive brain stimulation (NIBS) modalities, including high-frequency transcranial random noise stimulation (hf-tRNS), anodal transcranial direct current stimulation ...