Browsing Science (Faculty of) by Title
Now showing items 2338-2357 of 3025
-
Response of wild fish to municipal wastewater treatment plant upgrades
(University of Waterloo, 2017-03-21)Impacts on aquatic biota residing near municipal wastewater treatment plant (MWWTP) outfalls have been documented globally. These impacts may be directly or indirectly associated with elevated contaminants such as nutrients, ... -
Retinal and Optic Nerve Head Vascular Reactivity in Primary Open Angle Glaucoma
(University of Waterloo, 2009-05-14)The global aim of this thesis was to assess retinal vascular reactivity in glaucoma patients using a standardised hypercapnic stimulus. There is a suggestion of disturbance in the regulation of retinal and optic nerve head ... -
Retinal Blood Flow and Markers of Vascular Inflammation and Endothelial Dysfunction in Type 2 Diabetes
(University of Waterloo, 2010-09-01)Abnormal leukocyte adhesion (i.e. leukostasis) to retinal vascular endothelial cells occurs in early diabetes. The processes of leukostasis have been clearly demonstrated in the vascular endothelium of patients with diabetes. ... -
Retinal Blood Flow and Vascular Reactivity in Chronic Smokers
(University of Waterloo, 2013-02-25)Purpose To investigate the impact of cigarrete smoking in a group of otherwise healthy young individuals on: 1) Retinal blood flow using Doppler based SD-OCT, 2) Retinal vascular reactivity using a gas sequencer to ... -
Retinal Blood Flow and Vascular Reactivity in Diabetic Retinopathy
(University of Waterloo, 2006-12-18)Introduction Retinal vascular reactivity is impaired in patients with diabetes and is thought to be involved in the onset and progression of diabetic retinopathy (DR). Previous studies that have utilized hyperoxia to ... -
Retinal Blood Oxygen Saturation and Angiogenic and Inflammatory Biomarkers in Type 2 Diabetes
(University of Waterloo, 2015-01-16)Introduction: Diabetic retinopathy (DR) is a major source of visual loss in the world, including North America. A number of hyperglycemia-related pathways have been associated with DR onset and progression. Disturbances ... -
Retinal degeneration in and in vivo electroretinography measurements of Smoky Joe Chickens
(University of Waterloo, 2012-09-28)Inherited retinal degenerative diseases can affect various components of the retina leading to blindness. Five different mutant strains of chicken have been studied extensively as potential models for inherited retinal ... -
Retinal Haemodynamics in Primary Open Angle Glaucoma Patients with Differing Nocturnal Blood Pressure Profiles
(University of Waterloo, 2014-08-14)The impairment of ocular haemodynamics has been reported in primary open angle glaucoma (POAG) patients using various blood flow measurement techniques. Studies have shown hypotension may accelerate progression in POAG and ... -
Retinal Imaging: Acquisition, Processing, and Application of Mueller Matrix Confocal Scanning Laser Polarimetry
(University of Waterloo, 2013-05-28)The focus of this thesis is the improvement of acquisition and processing of Mueller matrix polarimetry using a confocal scanning laser ophthalmoscope (CSLO) and the application of Mueller matrix polarimetry to image the ... -
Retinal perfusion changes in radiation retinopathy-post brachytherapy for choroidal melanoma
(University of Waterloo, 2017-04-21)Introduction: Radiation retinopathy (RR) is a chronic progressive vasculopathy developing secondary to the impact of ionizing radiation to the retina. RR develops post radiation therapy using radioactive plaque to treat ... -
Retinal Structure and Function in Typical Children and Young Adults
(University of Waterloo, 2021-01-20)Purpose. Children with visual impairment may be referred for ERG and OCT testing to aid in diagnosis and monitoring, particularly those with suspected retinal diseases. To establish if a result is abnormal, knowledge of ... -
Retinal Vascular Reactivity to Incremental Hyperoxia During Isocapnia
(University of Waterloo, 2008-07-07)PURPOSE: Systemic hyperoxia has been induced using inspired gases in many studies to investigate vascular reactivity in the retinal vasculature. Technical limitations in the past resulted in inadequate control of systemic ... -
Reversible and Mechanism-Based Irreversible Inhibitor Studies on Human Steroid Sulfatase and Protein Tyrosine Phosphatase 1B
(University of Waterloo, 2009-10-02)The development of reversible and irreversible inhibitors of steroid sulfatase (STS) and protein tyrosine phosphatase 1B (PTP1B) is reported herein. STS belongs to to the aryl sulfatase family of enzymes that have roles ... -
Reversible gating of ion transport through DNA-functionalized carbon nanotube membranes
(Royal Society of Chemistry, 2017-01-03)Carbon nanotubes (CNTs) can be used to create unique fluidic systems for studying ion transport in nanochannels due to their well-defined geometry, atomically smooth and chemically inert surface, and similarity to transmembrane ... -
Review of geometries and coating materials in solid phase microextraction: Opportunities, limitations, and future perspectives
(Elsevier, 2017-09-01)The development of new support and geometries of solid phase microextraction (SPME), including metal fiber assemblies, coated-tip, and thin film microextraction (TFME) (i.e. self-supported, fabric and blade supported), as ... -
RF-QPC Charge Detector and S-T₊ Qubit in a Lateral Double Quantum Dot Device
(University of Waterloo, 2017-01-18)A measurement system is developed for studying a lateral double quantum dot (DQD) device formed in the two-dimensional electron gas (2DEG) of a GaAs/AlGaAs heterostructure. Copper powder and RC filters are constructed to ... -
Rigid Quasilocal Frames
(University of Waterloo, 2014-01-23)This thesis begins by introducing the concept of a rigid quasilocal frame (RQF) as a geometrically natural way to define an extended system in the context of the dynamical spacetime of general relativity. An RQF is defined ... -
Ring Resonator Photonic Sensing Device
(University of Waterloo, 2015-02-20)This thesis studies a micro ring resonator sensor structure built using the silicon-on-insulator (SOI) platform. The sensor detects changes in index of refraction with a sensitivity of 21 nm/RIU (RIU stands for refractive ... -
Ring Resonators for Integrated Optics Applications
(University of Waterloo, 2012-01-03)Integrated ring resonators have attracted a considerable interest in optical communications because of their small size and wide range of applicability. Here we consider several aspects of these devices, beginning with a ... -
A ring-polymer model shows how macromolecular crowding controls chromosome-arm organization in Escherichia coli
(Nature Publishing Group, 2017-09-19)Macromolecular crowding influences various cellular processes such as macromolecular association and transcription, and is a key determinant of chromosome organization in bacteria. The entropy of crowders favors compaction ...