Browsing Science (Faculty of) by Title
Now showing items 2995-3014 of 3042
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Using Pyrene Excimer Fluorescence To Probe Polymer Diffusion in Latex Films
(American Chemical Society, 2017-02-28)This study introduces a simple technique that can be used to quantitatively probe interparticle polymer diffusion (IPD) between adjacent particles in a latex film using pyrene excimer fluorescence (PEF). To demonstrate the ... -
Using Pyrene Excimer Fluorescence To Probe the Interactions between Viscosity Index Improvers and Waxes Present in Automotive Oil
(American Chemical Society, 2017-03-28)A new methodology based on pyrene excimer fluorescence (PEF) was applied to quantitatively measure the actual level of intermolecular association between ethylene propylene (EP) copolymers in toluene in the presence of ... -
Using Pyrene to Probe Interparticle Polymer Diffusion in a Latex Film
(University of Waterloo, 2015-12-16)Fluorescence has been used for many years as a powerful analytical tool to probe the formation of films from aqueous latex dispersions. Currently, the most widely used method is fluorescence resonance energy transfer (FRET), ... -
Using Tetrahymena thermophila to study the role of protozoa in the inactivation of viruses in water
(University of Waterloo, 2007-04-24)Ciliated protozoa, such as Tetrahymena thermophila, are ubiquitous in the aquatic environment, including in sewage treatment plants. Their ability to graze on particulates could influence water quality in a number of ways, ... -
Using The New 3D Digital Model Of Ontario’s Paleozoic Geology To Bridge Gaps In The Traditional Education Framework
(University of Waterloo, 2020-04-13)The demand for competent geoscientists and engineers is high, and the development of a new resource has addressed a gap in the traditional education framework. Spatial understanding is a key component of geoscience competency, ... -
Utilization of Cellulosic Materials by Caldicellulosiruptor species
(University of Waterloo, 2012-01-11)Caldicellulosiruptor is a genus of thermophilic, anaerobic, Gram-positive, non-spore-forming cellulolytic bacteria and is capable of fermenting a wide spectrum of carbohydrates. Both Caldicellulosiruptor saccharolyticus ... -
Utilization of Cellulosic Materials by Thermotoga petrophila
(University of Waterloo, 2011-12-08)Thermotoga petrophila is a hyperthermophilic anaerobic bacterium that grows optimally at 80° C. It can utilize plant biomass to produce biofuels, including ethanol and hydrogen, which are alternative and renewable sources ... -
Utilization of Soft Matter as a Structure Directing Agent for the SYnthesis of Nanostructured Materials
(University of Waterloo, 2015-01-19)Sol-gel methods combined with the adaptive structuring properties of soft matter, have been used to create templates and synthesize mesoporous materials or nanoparticles from them. For example, micelles formed with non-ionic ... -
Vaccines for finfish aquaculture: What do we need to know to make them work?
(Elsevier, 2012-08-08)Aquaculture still faces serious economic impacts due to the loss of animals to disease. A conservative estimate of 5% losses due to disease means that the finfish aquaculture industry loses over $1 billion annually on a ... -
Vacuum and Optical Designs for an Open-access Trapped Ion Quantum Processor
(University of Waterloo, 2020-09-21)This thesis focuses on the design of a vacuum system for a trapped ion quantum computer that will house an advanced ion chip trap from Sandia National Laboratories, capable of performing high fidelity operations on up to ... -
Vadose Zone Response to Pumping in Unconfined Aquifers
(University of Waterloo, 2011-09-30)The interaction between drainage from the variably saturated zone above the water table, and the response of an unconfined aquifer to pumping has been the source of debate for many decades. While various field tests (Nwankwor ... -
The Validation of a Novel Dynamic Visual Acuity Test, and Examination of the Effects of Different Factors on Dynamic Visual Acuity
(University of Waterloo, 2018-05-22)Purpose: When a target is in motion, two thresholds can be measured: dynamic visual acuity (DVA, the smallest target size at which an observer can resolve target detail) and speed threshold (the fastest target speed at ... -
The Value of Agricultural Census Data in Carbon Cycle Studie
(University of Waterloo, 2011-05-24)Agricultural census data have been identified to possess the potential to provide constraints on carbon uptake by croplands at the regional scale. In this study, we build on previous efforts and further assess this potential ... -
Variation in fish fatty acid concentrations among lakes in the Dehcho region of the Northwest Territories
(University of Waterloo, 2020-12-22)Background: In the subarctic Dehcho region of the Northwest Territories, many remote communities rely on traditional foods, including fish, to supplement more expensive store-bought options. Fish are an excellent source ... -
Variational Quantum Eigensolvers Applied to Problems in High Energy Physics
(University of Waterloo, 2021-01-13)Variational methods have long been used to study strongly-correlated quantum systems. Despite the successes of classical protocols, these are limited in the study of quantum systems, either due to numerical errors like the ... -
Variations and Sources of Atmospheric CO2 Measured at East Trout Lake, Canada
(University of Waterloo, 2016-01-15)Reducing uncertainties in projections of surface emissions of major greenhouse gases (GHGs) including CO2 relies on continuously improving our scientific understanding of the exchange processes between the atmosphere and ... -
Variations in Northern Dolly Varden (Salvelinus malma malma) total mercury concentrations from the northwestern Canadian Arctic
(University of Waterloo, 2014-10-22)Mercury (Hg) is a ubiquitous contaminant with harmful impacts on the aquatic ecosystem as well as human health. Studies to date of the bioaccumulative effects of Hg on northern fishes have focussed on all but one of the ... -
Variations on PIGS: Non-standard approaches for imaginary-time path integrals
(University of Waterloo, 2015-08-21)The second Rényi entropy has been used as a measure of entanglement in various model systems, including those on a lattice and in the continuum. The present work focuses on extending the existing ideas to measurement of ... -
Vegetation Based Assessment of Wetland Condition in the Prairie Pothole Region
(University of Waterloo, 2018-01-22)The northern prairie pothole region (NPPR) in central and southern Alberta contains numerous shallow, open-water pothole wetlands that provide important ecosystem services to the region, such as flood mitigation. To address ... -
Vegetation diversity in mountain peatland systems
(University of Waterloo, 2021-01-14)Mountain valley bottom peatlands are poorly studied systems, particularly in Alberta, Canada, where the provincial inventory has neither mapped nor characterized them. Nonetheless, these ecosystems provide valuable ecosystem ...