Browsing University of Waterloo by Title
Now showing items 13397-13416 of 18946
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Phosphorus and Nitrogen Cycling in the Mediterranean Sea: Circulation, biogeochemistry and anthropogenic forcing
(University of Waterloo, 2017-04-28)The Mediterranean Sea (MS) is an oligotrophic marine basin despite being semi-enclosed with unusually low inorganic phosphorus (P) and nitrogen (N) concentrations, and high nitrate (NO₃):phosphate (PO₄) ratios comparative ... -
Phosphorus and nitrogen in the Al-Hawizeh marshes, southern Iraq
(University of Waterloo, 2008-08-22)Hour Al-Hawizeh is one of the biggest marshes within the Mesopotamian marshes of southern Iraq. This Hour has been functioned for centuries under natural conditions providing resources for local people, important habitat ... -
Phosphorus cycling by stream biofilms exposed to continuous and episodic loading patterns
(University of Waterloo, 2023-09-25)Anthropogenic activities have led to nutrient enrichment of streams, causing eutrophication of water bodies on a global scale. Eutrophication is frequently tied to an excessive influx of phosphorus (P); a crucial nutrient ... -
Phosphorus Legacies and Water Quality Risks: A Vulnerability-Based Framework in Southern Ontario
(University of Waterloo, 2019-12-20)Excess phosphorus (P) loading increases the frequency of harmful algal blooms (HABs), posing severe threats to drinking water security and aquatic ecosystems. Efforts to reduce the inputs of P to Canadian agricultural soils ... -
A phosphorus mass-balance model for the Lake St. Clair-Lake Erie system: How important is in-lake phosphorus loading?
(University of Waterloo, 2023-05-14)Management of eutrophication in lakes usually focuses on reducing external phosphorus (P) loads. However, several in-lake mechanisms can add significant amounts of new and recycled P to the water column, hence, contributing ... -
Phosphorus Removal and Recovery from Wastewater using Sorbent Technologies
(University of Waterloo, 2018-08-03)Phosphorus (P) is an essential nutrient in fertilizers that are necessary for food production. Wastewater may represent a renewable source of nutrients if methods for recovering P from dilute wastewater streams can be ... -
Phosphorus Responses to Soil Moisture in Southern Ontario Agricultural Soil
(University of Waterloo, 2022-04-29)Agricultural landscapes are known to increase phosphorus (P) losses to waterways, contributing to the eutrophication of freshwater surface water bodies. In cold agricultural regions, the nongrowing season drives annual P ... -
Phosphorus retention and transformation in a dammed reservoir of the Thames River, Ontario: Impacts on phosphorus load and speciation
(Elsevier, 2022-02)Extensive efforts are underway to reduce phosphorus (P) export from the Lake Erie watershed. On the Canadian side, the Thames River is the largest tributary source of P to Lake Erie’s western basin. However, the role of ... -
Phosphorus retention in a bioretention cell: Insights from process-based modelling
(University of Waterloo, 2023-02-23)Bioretention cells (BRCs) have emerged as one of the Green Infrastructure and low impact development (LID) practices to reduce peak discharge and nutrient export in urban areas. Despite growing implementation globally, ... -
Phosphorus Retention in an Urban Stormwater Pond
(University of Waterloo, 2021-04-07)Stormwater ponds are a critical piece of stormwater infrastructure which were originally developed to reduce local floods associated with the increased impervious surface area of urban environments. They are now increasingly ... -
Phosphorus Sequestration for Control of Cyanobacterial Growth in Drinking Water Reservoirs
(University of Waterloo, 2016-10-05)Engineered drinking water reservoirs are designed to facilitate particle settling for reduction of turbidity prior to conveyance to a drinking water treatment plant (DWTP). Fine cohesive sediment particles can carry ... -
Phosphorus size-distribution and cycling in the plankton of two oligotrophic lakes with contrasting fish communities
(University of Waterloo, 1997) -
Photoaffinity Labels of Daptomycin
(University of Waterloo, 2014-05-23)Daptomycin (Dap) is a cyclic lipodepsipeptide antibiotic that is currently used in the treatment of bacterial infections caused by Staphylococcus aureus including the strains that are methicillin-resistant (MRSA), as well ... -
Photocatalytic Degradation of Microcystins by TiO2 Using UV-LED Controlled Periodic Illumination
(Multidisciplinary Digital Publishing Institute, 2019-02-14)Toxic microcystins (MCs) produced by freshwater cyanobacteria such as Microcystis aeruginosa are of concern because of their negative health and economic impacts globally. An advanced oxidation process using UV/TiO2 offers ... -
Photocatalytic Oxidation of Anesthetic Gases
(University of Waterloo, 2020-08-27)Inhaled anesthetics used in surgeries are typically volatile halogenated hydrocarbons. In a typical situation only 5% of the administered anesthetic is metabolized by the human body, while the remaining 95% is exhaled ... -
Photocatalytic performances of ZnO nanoparticle film and vertically aligned nanorods in chamber-based microfluidic reactors: Reaction kinetics and flow effects
(Elsevier BV, 2017-07-15)The nanoparticle seed layer (a film) and vertically aligned nanorods of zinc oxide (ZnO) with different lengths were fabricated within a novel chamber-based microfluidic (microchamber) reactor with a varying height of ... -
Photochemical Degradation of Chlorobenzene
(University of Waterloo, 2013-05-02)Persistent organic pollutants (POPs) are organic compounds of anthropogenic origin that have been linked to the development of cancer, neurobehavioural impairment, and immune system biochemical alterations. These chemicals ... -
Photogrammetry in Mediterranean Archaeology
(University of Waterloo, 2016-03-29)Digital photogrammetry has progressed to a level at which it no longer requires expensive equipment or significant training in order to produce professional results. In the field of Mediterranean archaeology requirements ... -
Photoinduced Toxicity of Metals and PAHs to Hyalella azteca: UV-Mediated Toxicity and the Effects of Their Photoproducts
(University of Waterloo, 2009-05-08)Polycyclic aromatic hydrocarbons (PAH) are a class of common environmental contaminants known to be phototoxic. PAH Photoinduced toxicity is caused by two mechanisms: photomodification and photosensitization. The ...