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Gypsum Amendment Reduces Redox-Induced Phosphorous Release from Freshly Manured, Flooded Soils to Floodwater
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2019-01-01)The effectiveness of gypsum in reducing runoff P losses from soils and the mechanisms responsible are well documented; however, gypsum amendment effects in reducing redox-induced P losses from flooded soils are less ... -
Phosphorus Release from Unamended and Gypsum- or Biochar-Amended Soils under Simulated Snowmelt and Summer Flooding Conditions
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2020-03-30)Prolonged flooding changes the oxidation–reduction status of soils, often enhancing P release to overlying floodwater. We studied P release from unamended, gypsum-amended, and biochar-amended soils under simulated snowmelt ... -
Temperature and freezing effects on phosphorus release from soils to overlying floodwater under flooded-anaerobic conditions
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2020-03-30)Increased phosphorus (P) availability under flooded, anaerobic conditions may accelerate P loss from soils to water bodies. Existing knowledge on P release to floodwater from flooded soils is limited to summer conditions ... -
Slides to accompany Chemistry and the Environment: A Chemistry Perspective for discussion of Environmental Issues
(University of Winnipeg Library, 2020-09-23) -
Workbook to accompany Chemistry and the Environment: A Chemistry Perspective for discussion of Environmental Issues
(OpenStax and University of Winnipeg Library, 2020-09-08) -
Chemistry and the Environment: A Chemistry Perspective for discussion of Environmental Issues
(OpenStax and University of Winnipeg Library, 2020-08-21)Chemistry and the Environment is designed to accompany a one-semester course in chemistry-based discussions of important environmental issues such as air pollution, the ozone layer, climate change and water quality. Chemical ... -
Truce–Smiles rearrangement of substituted phenyl ethers
(The Royal Society of Chemistry, 2015-05-26)The requirement of aryl ring activation by strong-electron withdrawing substituents in substrates for the intramolecular nucleophilic aromatic substitution reaction known as the Truce–Smiles rearrangement was examined. ... -
Effect of the tether length upon Truce‐Smiles rearrangement reactions
(John Wiley & Sons, Ltd., 2017-07-07)This report examines the effect of substrate design upon the Truce‐Smiles rearrangement, an intramolecular nucleophilic aromatic substitution reaction. The length of the molecular spacer that tethers the carbanion nucleophile ... -
The Truce–Smiles rearrangement and related reactions: a review
(NRC Research Press, 2017-01-16)The Truce–Smiles rearrangement is an X → C aryl migration reaction that is achieved by an intramolecular nucleophilic aromatic substitution pathway. The reaction exhibits a wide substrate scope with respect to a migrating ... -
A new polymorph of phenylselenium trichloride
(International Union of Crystallography, 2019-11)A second polymorph of phenylselenium trichloride, PhSeCl3 or C6H5Cl3Se, is disclosed, which is comprised of asymmetric chlorine-bridged noncovalent dimer units rather than polymeric chains. These dimers are each weakly ... -
Statement on Spectroscopic Imaging in Art Conservation: A New Tool for Materials Investigations
(Leonardo Electronic Archive, 2002-09) -
Spectroscopic Imaging in Art Conservation: A New Tool for Materials Investigations
(The MIT Press, 2003-08-01) -
Spectroscopic approaches for studying faint text on a wooden tally from Invincible (1758)
(International Journal of Conservation Science, 2013-01-01)In this study we describe the application of X-ray fluorescence, variable pressure scanning electron microscopy and visible (420-720 nm) hyperspectral imaging to assess the surface properties of a wood tally stick that was ... -
Performance of a constructed wetland in Grand Marais, Manitoba, Canada: Removal of nutrients, pharmaceuticals, and antibiotic resistance genes from municipal wastewater
(Chemistry Central Ltd., 2013)BACKGROUND: The discharge of complex mixtures of nutrients, organic micropollutants, and antibiotic resistance genes from treated municipal wastewater into freshwater systems are global concerns for human health and aquatic ... -
Differential Enantioselective Transformation of Atropisomeric Polychlorinated Biphenyls by Multiple Bacterial Strains with Different Inducing Compounds
(American Society for Microbiology., 2002-11)Enantioselective biotransformation of polychlorinated biphenyls (PCBs) has been suggested from studies showing differential occurrence of PCB enantiomers in environmental samples, including river and riparian biota and ... -
Aggregation of Fine Particles at the Sediment-Water Interface
(American Geophysical Union, 1992-11-15)The presence of a bottom sediment layer agitated by mechanical stirring or by resident organisma (tubificid oligochaetes) significantly increases the rate at which fine (1 µm) cohesive particles are removed from suspension ...
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