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Full-Text Articles in Physical Sciences and Mathematics
Investigating The Biochemical And Catalytic Properties Of Nitrile Hydratases, Salette Martinez
Investigating The Biochemical And Catalytic Properties Of Nitrile Hydratases, Salette Martinez
Dissertations
Chemical and pharmaceutical industries make extensive use of amide compounds for the manufacture of commodity chemicals (e.g., acrylamide) and drug intermediates (e.g., nicotinamide). Production of amide compounds is typically achieved by the hydration of nitrile compounds under acidic or basic conditions, high temperatures, and copper catalysts. However, the use of such chemical methods leads to the generation of unwanted by-products and toxic wastes, in addition to low product yields and high production costs. An alternative route for amide production is the use of a natural catalyst, for example nitrile hydratases (NHase, E.C. 4.2.1.84). NHase is a metalloenzyme that efficiently converts …
Polyaminocarboxylic Acids As Potential Candidates For Trivalent Actinide/Lanthanide Separations, Daniel Stephen Kissel
Polyaminocarboxylic Acids As Potential Candidates For Trivalent Actinide/Lanthanide Separations, Daniel Stephen Kissel
Dissertations
Nuclear energy, which has historically been considered an alternative energy solution in the United States, is regaining support as an efficient means of energy production. The viability of nuclear energy for the future, however, will remain suspect until issues involving the waste created are fully addressed in the next generation of advanced nuclear fuel cycles. The TALSPEAK process, developed at Oak Ridge National Laboratory, is a classic solvent extraction technique that employs a series of analytical separations in an effort to remove radioactive contaminants from spent nuclear fuel (SNF) and recover uranium in high purity. This separation utilizes a polyaminocarboxylic …
Investigation Of Chicago Air Pollution And Meteorological Influence On Pollution Development: Physical Measurements And Multivariate Statistical Analyses, Katrina Lyn Binaku
Investigation Of Chicago Air Pollution And Meteorological Influence On Pollution Development: Physical Measurements And Multivariate Statistical Analyses, Katrina Lyn Binaku
Dissertations
The goal of this project was to evaluate air pollutants and meteorology in Chicago, Illinois during summers 2010, 2011, and 2012. Sixty-six collection days of air pollutant and meteorological data were completed at the Loyola University Chicago sampling station atop Mertz Hall. Trace gases, nitrogen oxides and ozone, as well as the water-soluble fraction of aerosol material were the air pollutants of focus in this study. Data analysis showed that chloride, nitrate, sulfate, and oxalate were the most frequently quantified water-soluble ions in aerosol samples, followed by acetate, formate, potassium, phosphate, calcium, and magnesium ions. Ionic ratios showed that stationary …