Browsing Science (Faculty of) by Title
Now showing items 2827-2846 of 2879
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Using differential mobility spectrometry to measure ion solvation: An examination of the roles of solvents and ionic structures in separating quinoline-based drugs
(Royal Society of Chemistry, 2015)Understanding the mechanisms and energetics of ion solvation is critical in many scientific areas. Here, we present a methodlogy for studying ion solvation using differential mobility spectrometry (DMS) coupled to mass ... -
Using Folsomia candida to Test the Toxicity of Weathered Petroleum-impacted Field Soils before and after Phytoremediation
(University of Waterloo, 2014-05-01)The Canadian Council of Ministers of the Environment (CCME) developed guidelines for petroleum hydrocarbon (PHC) impacted field soils based on the “worst case” scenario of a fresh petroleum spill (CCME, 2001b; CCME, 2008b). ... -
Using Isotopes to Understand the Origin of Water and the Effect of Reinjection in the Los Azufers Geothermal Field in Mexico
(University of Waterloo, 2017-01-25)Los Azufers geothermal system is a convective-type geothermal system located northwest of Mexico City in the state of Michoacán at Mexico. Improvements in geochemical techniques enable a better investigation of the Tertiary ... -
Using Major Histocompatibility Genes Polymorphism to Identify Arctic Charr (Salvelinus alpinus) Populations
(University of Waterloo, 2008-01-18)Arctic charr is the most northerly distributed salmonid and the most abundant fish in high latitude postglacial lakes. Arctic charr lives in oligotrophic water bodies where it has been able to adapt and thrive due, in part, ... -
Using Numerical Models for Managing Water Quality in Public Supply Wells
(University of Waterloo, 2013-08-30)Groundwater models can be useful tools to support decisions regarding the management of public water supply wells. Scientific progress and the availability of increasingly powerful computer resources provide a continuous ... -
Using paleolimnology to assess influence of Peace River regulation on lakes along two transects in the northern portion of the Peace-Athabasca Delta
(University of Waterloo, 2022-08-18)The Peace-Athabasca Delta (PAD), northern Alberta, Canada, is an ecologically and culturally important floodplain where debate has persisted for more than 60 years about causes of water-level drawdown of its abundant, ... -
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 ...