Browsing Science (Faculty of) by Title
Now showing items 1840-1859 of 3026
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Natural Late Holocene lake level fluctuations recorded in the Ipperwash strandplain, southern Lake Huron
(University of Waterloo, 2017-09-25)The Laurentian Great Lakes (LGL) are the largest system of surface freshwater on Earth. Three factors, glacial isostatic adjustment (GIA), outlet conveyance, and climate processes contribute to natural rises and falls in ... -
Natural source zone depletion of petroleum hydrocarbons under variable temperature and moisture conditions
(University of Waterloo, 2023-02-15)In subsurface environments contaminated by petroleum hydrocarbons (PHCs), the steep geochemical and redox gradients near the water table, the oxygen availability, moisture content, salinity, pH, nutrient concentrations and ... -
The Nature and Impact of Active Galactic Nuclei
(University of Waterloo, 2021-08-12)The gravitational interaction around the event horizon of black holes presents theoretical challenges. With the advent of the Event Horizon Telescope (EHT), we are now entering an era in physics where we can probe the ... -
Nature-inspired robust hydrochromic film for dual anticounterfeiting
(Elsevier, 2021-06)Nature-inspired materials have been actively developed for anticounterfeiting applications. Among a variety of stimuli-responsive anticounterfeiting strategies, hydrochromic materials exhibit reversible color change in ... -
Near addition lenses as a tool to investigate vergence adaptation in myopic children
(University of Waterloo, 2011-08-12)Accommodation and vergence are two interacting ocular motor systems that function to maintain clear and single vision across a wide range of distances. Sustained fixation results in the adaptation of these ocular motor ... -
Near real-time determination of B.1.1.7 in proportion to total SARS-CoV-2 viral load in wastewater using an allele-specific primer extension PCR strategy
(Elsevier, 2021-10-15)"The coronavirus disease 2019 (COVID-19) pandemic caused by the severe acute respiratory syndrome corona- virus 2 (SARS-CoV-2) has claimed millions of lives to date. Antigenic drift has resulted in viral variants ... -
Near-Term Quantum Algorithms for Classical Sampling
(University of Waterloo, 2023-08-14)In the current era of noisy intermediate-scale quantum devices, quantum sampling algorithms have been of great interest as they permit errors in their execution while maintaining their advantage over classical counterparts ... -
Needle Trap Device and Solid Phase Microextraction Combined with Portable GC-MS for On-Site Applications
(University of Waterloo, 2011-06-21)Needle trap device (NTD) is a technique that is useful for a wide variety of applications involving the sample preparation of compounds with a wide range of chemico-physico properties, and varying volatilities. A newly ... -
Nematic ordering of wormlike polymers
(University of Waterloo, 2005)In this thesis, based on the Onsager excluded volume interaction model, two nematic ordering problems of wormlike (semiflexible) polymer are studied: one is to investigate the isotropic-nematic interface of polymers for ... -
Neonatal Glycemia and Neurodevelopmental Outcomes at 2 Years
(Massachusetts Medical Society, 2015-10-15)Neonatal hypoglycemia is a common and readily treatable risk factor for neurologic impairment in children. Although associations between prolonged symptomatic neonatal hypoglycemia and brain injury are well established,1 ... -
Network centrality analysis of eye-gaze data in autism spectrum disorder
(Elsevier, 2019-08)Individuals suffering from autism spectrum disorder (ASD) exhibit impaired social communication, the manifestations of which include abnormal eye contact and gaze. In this study, we first seek to characterize the spatial ... -
Neural modulation of the human visual cortex
(University of Waterloo, 2020-09-30)Neuroplasticity is a phenomenon that refers to the brain’s ability to reorganize, strengthen, and form neural connections, a process that becomes increasingly more difficult with age. Gamma amino-butyric acid (GABA), the ... -
Neural networks and quantum many-body physics: exploring reciprocal benefits.
(University of Waterloo, 2021-08-03)One of the main reasons why the physics of quantum many-body systems is hard lies in the curse of dimensionality: The number of states of such systems increases exponentially with the number of degrees of freedom ... -
Neural Tube Defect-causing Teratogens Affect Tissue Mechanical Properties and Cytoskeletal Morphology in Axolotl Embryos
(University of Waterloo, 2007-11-22)The teratogenic drugs cytochalasin B and valproic acid have been shown to alter F-actin polymerization, an effect that is crucial in forming microfilaments. Microfilaments form important cytoskeletal structures that maintain ... -
Neuregulin’s role in regulating the anti-inflammatory pathway
(University of Waterloo, 2009-08-12)Inflammation can be up-regulated by microglia and macrophages through the release of pro-inflammatory cytokines such as tumour necrosis factor-alpha (TNF-α). Excess production of TNF-α can lead to a variety of diseases and ... -
Neutral Radicals as Strongly Correlated Materials: Insights from Theory and Experiment
(University of Waterloo, 2014-12-19)Neutral organic radicals have been pursued for conductive and magnetic solid state properties associated with their unpaired electron. Historically, synthetic challenges and design limitations restricted these materials ... -
Neutron interferometer crystallographic imperfections and gravitationally induced quantum interference measurements
(American Physical Society, 2017-01-25)Dynamical diffraction leads to an interesting, unavoidable set of interference effects for neutron interferometers. This experiment studies the interference signal from two and three successive Bragg diffractions in the ... -
Neutron interferometric measurement of the scattering length difference between the triplet and singlet states of n-He-3
(American Physical Society, 2014-12-15)We report a determination of the n-He-3 scattering length difference = b = = b = 1 -b = 0 = [-5.411 = 0.031 (statistical) = 0.039 (systematic)] fm between the triplet and singlet states using a neutron interferometer. This ... -
Neutron Interferometry at the National Institute of Standards and Technology
(Hindawi, 2015)Neutron interferometry has proved to be a very precise technique for measuring the quantum mechanical phase of a neutron caused by a potential energy difference between two spatially separated neutron paths inside ... -
Neutron limit on the strongly-coupled chameleon field
(American Physical Society, 2016-03-11)The physical origin of the dark energy that causes the accelerated expansion rate of the Universe is one of the major open questions of cosmology. One set of theories postulates the existence of a self-interacting scalar ...