Browsing Theses by Title
Now showing items 9950-9969 of 15593
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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 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 ... -
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 ... -
Nitroxide-mediated controlled degradation of polypropylene
(University of Waterloo, 2006)Nitroxide-mediated Controlled Degradation of Polypropylene <br /> Controlled-rheology polypropylene resins (CRPP) have been produced industrially for years using reactive extrusion processes employing peroxides as free ... -
Nixonland Revisited: A History of Populist Communication
(University of Waterloo, 2009-09-22)The goal of this thesis was to validate journalist Rick Perlstein’s assertion in Nixonland: The Rise of a President and the Fracturing of America (2008) that the foundational dialectic of the 1960s “has not yet ended.” ... -
Ni₀.₀₅Mo₃Sb₅.₄Te₁.₆ Based Thermoelectric Nanocomposites
(University of Waterloo, 2016-05-04)Thermoelectric (TE) materials have the capability to convert thermal energy into useful electrical energy. Sustainable energy production and its utilization are among the many challenges that humankind is facing today. ... -
NMR Studies of Protein and Peptide Structure and Dynamics
(University of Waterloo, 2016-04-18)Calmodulin (CaM) is a small, acidic cytosolic calcium binding protein that responds to increases in intracellular Ca2+ concentrations. It is proposed to be involved in binding to and regulating over 300 functionally and ... -
NMR Study of Calmodulin’s Interaction with Inducible Nitric Oxide Synthase
(University of Waterloo, 2010-01-22)The increase of calcium in the cell can induce cellular functions such as fertilization, cell division and cell communication. Calcium (Ca2+) carries out these processes through proteins called calcium sensors. An important ... -
NMR STUDY OF EXCHANGE AND HYDRATION SITE IDENTIFICATION IN MCM-41
(University of Waterloo, 2007-01-16)Deuteron 1D and 2D NMR spectroscopy was used to study the dynamics of water molecules within the mesoporous material MCM-41. The deuteron spectra show three magnetization components for a sample hydrated to a 0.2 monolayer ... -
No Common Ground: Atlas of Resistance and Control During the 2010 Toronto G20 Summit
(University of Waterloo, 2015-01-22)Architecture and legislation describe the spaces of the city, and the activities they contain. ‘Security’ can dislodge this public space. This is especially true during gatherings of global leaders within major cities. The ... -
NO MAN'S LAND: deconstructing the company camp in Canada's Oil Sands
(University of Waterloo, 2015-05-08)For nearly fifty years, commercial development in the Canadian Oil Sands has been the generator of a population explosion in northern Alberta. Oil sector workers seeking stable employment and high wages have been drawn ... -
No Man's Land: The American military landscape as the new American park
(University of Waterloo, 2018-02-21)Military landscapes are seldom seen as ecologically diverse territories, full of life. Yet, there is growing evidence that these volatile lands are finding a second life as animal refuges, born out of necessity under the ... -
No Peace - A Drawing Installation
(University of Waterloo, 2009-05-06)This paper is intended to serve as a supporting document for the exhibition "No Peace" that was held at the Artery Gallery, 158 King St. W, Kitchener, ON, Canada, March 28 - April 18, 2009. This drawing installation ...