Browsing University of Waterloo by Title
Now showing items 11938-11957 of 18774
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Niagara Prospects
(University of Waterloo, 2009-07-30)This thesis proposes a fresh engagement with the idea of the archaic as a means to recover and replenish some of the lost vitality suffered during what William Barrett characterized the modern period as “the gigantic ... -
Niceness assumptions for Learning Algorithms
(University of Waterloo, 2014-08-01)Various machine learning algorithms like Neural Networks, Linear Regression, Feature Learning etc. are being employed successfully in a wide variety of applications like computer vision, speech recognition, bioinformatics ... -
Nickel Isotope Geochemistry in Mine Waste System
(University of Waterloo, 2021-01-13)Metal stable isotope analyses have proven to make valuable contributions to the study of the biogeochemical cycling of metals and metalloids in the environment. Processes that control the release, mobility and fate of ... -
Nickel-Seeded Silicon Nanowires Grown on Graphene as Anode Material for Lithium Ion Batteries
(University of Waterloo, 2014-05-12)There is a growing interest for relying on cleaner and more sustainable energy sources due to the negative side-effects of the dominant fossil-fuel based energy storage and conversion systems. Cleaner, electrochemical ... -
Niigani Miinigowiziiwin (we give these gifts to the future)
(University of Waterloo, 2023-08-17)This dissertation is the ni di-bah-ji-mo-win (my personal story) of being an Anishinaabekwe (Ojibway woman) doctoral student, studying conventional systems thinking, complexity and transitions to sustainability discourse ... -
Nine Challenges In Incorporating The Dynamics Of Behaviour In Infectious Diseases Models
(Elsevier, 2015-03-01)Traditionally, the spread of infectious diseases in human populations has been modelled with static parameters. These parameters, however, can change when individuals change their behaviour. If these changes are themselves ... -
Nishga Initiative and Missionary Response: Robert Doolan at Quinwoch, B.C.
(SAGE, 1981-07-01)In this historical study of the work of pioneer missionary Robert Doolan, Professor Patterson points out the initiative shown by the Nishga people of the northwest coast of British Columbia and how this interest helped ... -
Nitrate sources and cycling at the Turkey Lakes Watershed: A stable isotope approach
(University of Waterloo, 2004)<p class=MsoNormal><span style="mso-spacerun: yes"> </span>Stable isotopic analysis of nitrate (<sup>15</sup>N/<sup>14</sup>N and <sup>18</sup>O/<sup>16</sup>O) was used to trace nitrate sources and cycling under ... -
Nitrogen cycling in the upland boreal shield forest, response to an experimental addition of nitrate
(University of Waterloo, 1998) -
Nitrogen Dynamics in a Harvested Rocky Mountain Catchment
(University of Waterloo, 2018-01-19)While the impacts of forest harvesting on nitrogen (N) are largely well documented, changes to watershed N following harvesting are difficult to characterize within steep, mountainous terrain creating uncertainty for ... -
The Nitrogen Legacy: Understanding Time Lags in Catchment Response as a Function of Hydrologic and Biogeochemical Controls
(University of Waterloo, 2016-09-23)Global population has seen a more than threefold increase over the last 100 years, accompanied by rapid changes in land use and a dramatic intensification of agriculture. Such changes have been driven by a great acceleration ... -
Nitrogen Removal From Natural Gas by Membrane Separation
(University of Waterloo, 2015-04-08)Canada is globally the third largest natural gas producer with a total production of 13.9 billion ft3/day. Natural gas is a naturally occurring mixture consisting of mainly CH4 and varying amounts of other gases such as ... -
Nitrogen-Doped Carbon Materials as Oxygen Reduction Reaction Catalysts for Metal-Air Fuel Cells and Batteries
(University of Waterloo, 2012-05-09)Metal air battery has captured the spotlight recently as a promising class of sustainable energy storage for the future energy systems. Metal air batteries offer many attractive features such as high energy density, ... -
Nitrogen-Doped Carbon Nanotubes and their Composites as Oxygen Reduction Reaction Electrocatalysts for Low Temperature Fuel Cells
(University of Waterloo, 2011-05-03)The extensive amount of platinum required in order to facilitate the oxygen reduction reaction (ORR) occuring at the cathode of low temperature fuel cells provides cost limitations to the sustainable commercialization of ... -
Nitrogen-doped hollow porous carbon polyhedrons embedded with highly dispersed Pt nanoparticles as a highly efficient and stable hydrogen evolution electrocatalyst
(Elsevier, 2017-10-01)The hydrogen evolution reaction (HER) is a promising alternative method of producing clean and renewable hydrogen resources. Although Pt-based nanomaterials are the most efficient catalysts for HER, their poor stability ... -
Nitrous oxide and nitrate in the Grand River, Ontario: Sources, production pathways and predictability
(University of Waterloo, 2013-12-13)The increased use of synthetic nitrogen fertilizers since the early 1900s has resulted in greater food production but also problems with nitrogen pollution in freshwaters. Nitrate (NO3-) is a common pollutant in rivers and ... -
Nitrous oxide dynamics in a riparian wetland of an agricultural catchment in Southern Ontario
(University of Waterloo, 2009-04-28)Riparian zones (RZ) are known to act as buffers, reducing the transfer of potentially harmful nutrients from agricultural fields to surface water bodies. However, many of the same processes in the subsurface that help to ... -
Nitrous Oxide Production in the Grand River, Ontario, Canada: New Insights from Stable Isotope Analysis of Dissolved Nitrous Oxide
(University of Waterloo, 2008-10-07)Nitrous oxide (N₂O) is a powerful greenhouse gas, and its atmospheric concentration is increasing dramatically. N₂O is produced through the microbially-mediated processes of nitrification and denitrification. Since these ... -
Nitrous Oxide State Estimation in Hybrid Rocket Oxidizer Tanks
(University of Waterloo, 2017-02-22)There is an increasing interest in the use of hybrid rockets to accomplish tasks that require precise control of the craft. Fuel is being consumed as the craft is propelled, causing the mass of the rocket to change. In ...