Browsing University of Waterloo by Title
Now showing items 8325-8344 of 18804
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Hydrogenation of Nitrile and Olefinic Groups in Butadiene Rubbers
(University of Waterloo, 2014-07-15)Nowadays, traditional diene-based polymers cannot meet the demand for robust elastomers in many industries. Acrylonitrile butadiene rubber (NBR) is a widely used diene-based polymer as an oil-resistant elastomer and is ... -
Hydrogenation of unsaturated polymers in latex form
(University of Waterloo, 2005)Diimide generated from the hydrazine/hydrogen peroxide/catalyst system can be used to hydrogenate unsaturated polymers in latex form. As an economical and environmentally benign alternative to the commercial processes ... -
Hydrogenolysis of Carbon-Carbon Sigma Bonds
(University of Waterloo, 2015-05-22)The modification of benzylic quaternary, tertiary, and secondary carbon centers through Pd-catalyzed hydrogenolysis of Csp3-Csp3 σ bonds is presented. When benzyl Meldrum’s acid derivatives bearing quaternary benzylic ... -
Hydrogeochemical soil dynamics relative to topography for forested land units undergoing reclamation in a post-mined landscape in the Athabasca Oil Sands Region, Alberta
(University of Waterloo, 2017-01-25)Natural forest soils of the Western Boreal Forest rarely witness near-surface soil flushing events during the growing season due to the forest’s excessive evapotranspiration demands and large unsaturated zone storage ... -
Hydrogeochemical, Mineralogical and Microbial Processes Occurring in Old Sulfide-Rich Tailings
(University of Waterloo, 2015-09-30)The former Sherritt-Gordon Mine, located in Sherridon Manitoba, processed approximately 7.7 Mt of sulfide ore between 1931 and 1951. The Zn-Cu volcanic massive-sulfide ore body yielded Zn and Cu concentrates with minor ... -
Hydrogeochemistry and Trace Element Mobility in an Acidic High-Sulfide Tailings Impoundment After 40 Years of Oxidation
(University of Waterloo, 2024-01-25)Abandoned mine sites can create a legacy environmental contamination issue when the generation of acid mine drainage is allowed to continue with insufficient or absent remediation measures. The South Bay mine, a former ... -
The Hydrogeochemistry of a Constructed Fen Peatland in the Post-Mined Landscape in the Athabasca Oil Sands Region, Alberta, Canada
(University of Waterloo, 2016-09-28)Large areas of land within the Athabasca Oil Sands Region (AOSR) have been subjected to open pit mining to recover bitumenous oil sands. Following extraction, oil sands require the addition of solvents to optimize the ... -
Hydrogeologic Analysis of a Complex Aquifer System and Impacts of Changes in Agricultural Practices on Nitrate Concentrations in a Municipal Well Field: Woodstock, Ontario
(University of Waterloo, 2005)The Thornton Well Field, located in an area of dominantly (~80%) agricultural land-use, produces ~50% of the drinking water for the city of Woodstock. Since the mid 1990?s nitrate concentrations in some of the supply ... -
Hydrogeologic Modelling to Assess Conditions Related to OPG's Proposed Deep Geologic Repository in Tiverton, Ontario
(University of Waterloo, 2008-01-17)A Deep Geologic Repository (DGR) for Low and Intermediate Level (L&IL) Radioactive Waste has been proposed by Ontario Power Generation for the Bruce Nuclear site in Ontario Canada. The DGR is to be constructed at a depth ... -
Hydrogeological application of electrical resistivity tomography, implementing a fixed-electrode strategy
(University of Waterloo, 1999) -
Hydrogeology, geochemistry and microbiology of a reactive barrier for acid mine drainage
(University of Waterloo, 2000) -
Hydrologic Change Detection Modelling Methods for Disturbed Forested Watersheds
(University of Waterloo, 2023-01-02)Decades of paired catchment studies have provided insights on how forests regulate water redistribution following vegetation disturbances such as logging and wildfire. In these settings, changes in runoff characteristics ... -
Hydrologic function of a moderate-rich fen watershed in the Athabasca Oil Sands Region of the Western Boreal Plain, northern Alberta
(Elsevier, 2019-03)Peatlands are a dominant land feature in the Athabasca Oil Sands Region (AOSR) of the Western Boreal Plain (WBP), comprising >50% of the total land area, many of which are moderate-rich fens. The carbon stocks of moderate-rich ... -
Hydrologic Validation of Real-Time Weather Radar VPR Correction Methods
(University of Waterloo, 2007-01-05)Weather radar has long been recognized as a potentially powerful tool for hydrological modelling. A single radar station is able to provide detailed precipitation information over entire watersheds. The operational use of ... -
Hydrological and Geochemical Implications of Aquifer Depressurization on Expansive Peatland Systems in the Hudson/James Bay Lowlands
(University of Waterloo, 2016-04-08)The ecological integrity of the peatlands of the Hudson/James Bay Lowlands (HJBL) is vulnerable to hydrological changes associated with climate change and resource development. Dewatering of an open-pit mine (the DeBeers ... -
The hydrological interactions within a mine impacted peatland, James Bay Lowland, Canada
(University of Waterloo, 2015-08-05)The development of a large open-pit diamond mine in the James Bay Lowland, one of the world’s largest wetland complexes, provides insight into hydrological processes that sustain wetlands in the region. The bog and fen ... -
Hydrological Modeling of the Upper South Saskatchewan River Basin: Multi-basin Calibration and Gauge De-clustering Analysis
(University of Waterloo, 2009-10-29)This thesis presents a method for calibrating regional scale hydrologic models using the upper South Saskatchewan River watershed as a case study. Regional scale hydrologic models can be very difficult to calibrate due ... -
The hydrology and geochemistry of a saline spring fen peatland in the Athabasca oil sands region of Alberta
(University of Waterloo, 2014-05-01)Due to the nature of the regional geology and the bitumen extraction process, the post-mined landscape of Canada’s oil sands region will have a much higher concentration of dissolved salts than it did prior to mining. As ... -
Hydrology and Nutrient Biogeochemistry of Shallow Pond-Peatland Complexes, Hudson Bay Lowlands
(University of Waterloo, 2018-06-25)Across the circumpolar north, the degradation of permafrost in tundra and peatland landscapes has resulted in significant changes to land cover, including an increase in the extent of thermokarst landforms. Climatically-driven ... -
Hydrology of a Constructed Fen Watershed in a Post-mined Landscape in the Athabasca Oil Sands Region, Alberta, Canada
(University of Waterloo, 2016-01-20)Peatlands (i.e., wetlands with organic soil) cover approximately 12% of Canada’s total land area, 18% of Alberta’s land base and nearly half of the landscape in Canada’s Western Boreal Plain. Some of these peatlands overlay ...