Browsing Theses by Title
Now showing items 13864-13883 of 15526
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Surface interactions between nanocrystal cellulose and liposomes
(University of Waterloo, 2015-02-05)Cellulose nanocrystal (CNC),which is produced from acid hydrolysis of native cellulose fibers, is a nanoparticle with exceptional strength and physicochemical characteristics. It is renewable, biodegradable, non-toxic and ... -
Surface Interactions of Proteinogenic Biomolecules and Gold Nanostructures on Si(111)7×7
(University of Waterloo, 2015-09-16)The site-specific surface interactions and film growth mechanisms of adsorption of gold and of proteinogenic sulfur-containing amino acids, i.e., L-cysteine and L-methionine, on Si(111)7×7 are studied for the first time ... -
Surface Modification and Characterization of Cellulose Nanocrystal for Biomedical Applications
(University of Waterloo, 2014-05-09)There is an ever-increasing desire to develop novel materials that could control the release of active compounds and increase their stability. Replacing petroleum-based synthetic polymers with sustainable materials has ... -
Surface modification of cellulose nanocrystal for advanced applications
(University of Waterloo, 2017-09-18)Cellulose nanocrystals (CNC) are bio-based nanoparticles, which display an array of interesting properties related to their renewability, biocompatibility, high tensile strength and elastic modulus, high aspect ratio, low ... -
Surface Modification of Stainless Steel by Electro-Spark Deposition
(University of Waterloo, 2016-12-13)Electrospark Deposition (ESD) is a pulsed micro-welding process that is used to apply surface coatings for repair of damaged high value precision products or modify their surfaces for specific properties. The low heat ... -
Surface Modification Studies on Lithium-rich Layered Oxides
(University of Waterloo, 2020-10-02)The importance of developing energy-dense lithium-ion batteries has gained much attention due to the rapid advancement in portable electronic devices to electric vehicles. In order to fulfill the energy requirement of those ... -
Surface Partitioning for 3+2-axis Machining
(University of Waterloo, 2007-08-01)Despite the inbuilt advantages offered by 5-axis machining, the manufacturing industry has not widely adopted this technology due to the high cost of machines and insufficient support from CAD/CAM systems. Companies are ... -
Surface Roughness Effect on Inverse Partial Fluorescence Yield
(University of Waterloo, 2013-09-03)Recently a new x-ray absorption spectroscopy (XAS) called inverse partial fluorescence yield (IPFY) has been developed that is bulk sensitive and free of saturation effects, which also provides a direct measure of total ... -
Surface Segregation in Binary Polymer Blends due to Stiffness Disparity
(University of Waterloo, 2021-07-14)The main objective of this work is to study the surface segregation of a binary polymer blend, where the two components have the same molecular volume but are different in other properties such as end-to-end distance, ... -
Surface Tension and Adsorption Kinetics of Volatile Organic Amphiphiles in Aqueous Solution
(University of Waterloo, 2011-08-11)Amphiphiles that possess a dual character, hydrophobic and hydrophilic, are employed in many chemical, pharmaceutical and biological applications. Amphiphile molecules that include a hydrophilic head and a hydrophobic tail ... -
Surface Tension and Adsorption of Volatile Organic Amphiphiles in Aqueous Solution
(University of Waterloo, 2007-06-14)The surface tension of an interface separating two bulk phases is one of the most widely studied properties in surface science research. The importance of surface or interfacial tension is reflected in the diverse number ... -
Surface Tension Measurement of High Density Polyethylene and Its Clay Nanocomposites in Supercritical Nitrogen
(University of Waterloo, 2009-08-14)Surface tension of a polymer melt in a supercritical fluid is a principal factor in determining cell nucleation and growth in polymer microcellular foaming. Previous work has presented the surface tension of the amorphous ... -
Surface Tension Measurement of Polystyrene in Supercritical Fluids
(University of Waterloo, 2007-10-01)Interfacial tension provides valuable information about polymer processes such as foaming, particle (pigment) suspension, wetting, and blending. Among the methods commonly used to measure surface tension, drop shape methods ... -
Surface Topography/Chemistry Modification through the Creation of Pseudo-Periodic Surface Micro-structures using Pulsed Nanosecond Fiber Laser Irradiation
(University of Waterloo, 2015-01-22)The focus of this thesis is on the development of a methodology for modifying the surface of titanium implant devices to improve biocompatibility and osseointegration properties utilizing three approaches: 1) developing ... -
Surface Water Quality Modelling Considering Riparian Wetlands
(University of Waterloo, 2009-02-18)Riparian wetlands are believed to play an important role in mitigating non-point source pol- lution, acting as physical and biochemical buffers between diffuse pollution sources and receiving waters. Many studies examined ... -
Surface Wettability Impact on Water Management in PEM Fuel Cell
(University of Waterloo, 2012-10-01)Excessive water formation inside the polymer electrolyte membrane (PEM) fuel cell’s structures leads to the flooding of the cathode gas diffusion layer (GDL) and cathode gas flow channels. This results in a negative impact ... -
Surface-subsurface hydrologic exchange and nutrient dynamics in a groundwater-fed stream, Bauman Creek, Ontario, Canada
(University of Waterloo, 2015-05-22)The stream-riparian-aquifer interface plays a major role in the regional flow of nutrients and contaminants due to a strong physical-chemical gradient that promotes the transformation, retention, elimination or release of ... -
Surficial Materials Mapping using Remote Sensing and Classification Methods: A Geological Knowledge and Statistical Approach
(University of Waterloo, 2014-10-30)Mapping the geology of Northern regions in Canada is an essential step in providing key knowledge for resource development and economic prosperity of northern communities. However, mapping this large remote region presents ... -
Surmounting Trade Barriers: American Protectionism and the Canada-United States Free Trade Agreement
(University of Waterloo, 2009-09-02)This thesis examines US protectionism in the 1980s from Canadian and American perspectives, and its role in Canada’s pursuit of the historic 1988 Canada-US Free Trade Agreement. It analyzes the perceived “threat” of ... -
Surveilling Queerness and Queering Surveillance: The Techno-Social Making of Queer Identity in the US and Canada, 1939-Present.
(University of Waterloo, 2023-03-22)This dissertation positions itself at the intersection of two disparate areas of study: Queer theory and surveillance studies. It aims to tease out the ways that technologies of surveillance and Queer lifeways evolved ...