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Articles 1 - 5 of 5
Full-Text Articles in Physical Sciences and Mathematics
Arsenic Speciation Analysis Of Biological Fluids : A Study Of Liquid Chromatography Coupled To Analytical Atomic Spectrometric Instrumentation, Kanna Ito
Legacy Theses & Dissertations (2009 - 2024)
Arsenic exists as many different chemical forms including inorganic, methylated and dietary species. The toxicity of these species varies: some are highly toxic and can cause adverse health effects in many parts of the body; others are considered relatively non-toxic. Monitoring arsenic exposure is usually accomplished by its direct measurement in biological fluids. Urine is the specimen of choice for assessing arsenic exposure, because of its short biological half-life in blood. There have been very few studies of arsenic species in blood, yet such research can provide valuable information on arsenic distribution and its metabolism in the body.
Design And Development Of Highly Active, Nanoengineered, Platinum Based Core-Shell Electrodes For Proton Exchange Membrane Fuel Cells, Seth Louis Knupp
Design And Development Of Highly Active, Nanoengineered, Platinum Based Core-Shell Electrodes For Proton Exchange Membrane Fuel Cells, Seth Louis Knupp
Legacy Theses & Dissertations (2009 - 2024)
Highly active nanoengineered core-shell electrocatalyst have a great potential to be used as fuel cell electrodes. They can alleviate problems related with commercial carbon supported platinum by simultaneously lowering cost while enhancing reaction kinetics and overall performance. More recently, use of nanoengineered core-shell electrode structures have showed their ability to enhance the stability and overall lifetime of the catalyst without sacrificing the electrode's performance. We studied the potential of using highly active core-shell nanoparticles supported on carbon nanomaterials as fuel cell electrodes.
Elucidating The Structure Of Protein Aggregates By Raman Spectroscopy, Ludmila A. Popova
Elucidating The Structure Of Protein Aggregates By Raman Spectroscopy, Ludmila A. Popova
Legacy Theses & Dissertations (2009 - 2024)
The structures and properties of amyloid fibrils are of considerable interest due to their associations with numerous neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease and transmissible spongiform encephalopaties (prion diseases). Understanding fibrillogenesis at a molecular level requires detailed structural characterization of amyloid fibrils. However amyloid fibrils are difficult objects to study due to their non-crystalline and insoluble nature. These properties make the application of classical tools of structural biology, such as X-Ray crystallography and solution Nuclear Magnetic Resonance spectroscopy, impractical for structural characterization of protein fibrils.
Synthetic Studies On Angucycline C104, Rui Zheng
Synthetic Studies On Angucycline C104, Rui Zheng
Legacy Theses & Dissertations (2009 - 2024)
The Hauser's annulation and Hauser and Xu's route for C-aryl glycoside synthesis were successfully employed to prepare the linear tetracyclic anthraquinone substituted C-aryl glycoside, galtamycin as well as bis C-aryl glycosides. Synthetic studies on angucycline C104 extended the utility of both methods to structures with angular tetracyclic framework.
Heterometallic Beta-Diketonates And Oxo-Diketonates As Single Source Precursors For The Synthesis Of Oxide Materials, Haitao Zhang
Heterometallic Beta-Diketonates And Oxo-Diketonates As Single Source Precursors For The Synthesis Of Oxide Materials, Haitao Zhang
Legacy Theses & Dissertations (2009 - 2024)
The focus of this investigation was to develop a simple, high-yield synthetic approach to heterometallic diketonates using the same construction principles as for their polynuclear homometallic analogs. Several low-temperature solid-state synthetic routes were suggested that appear to be general for the preparation of heterometallic diketonates incorporating a wide range of s-, p-, d-, and f-metals. Using this investigative approach, two families of bimetallic homoleptic diketonates that contain heavy main group (BiIII, PbII) and the first row divalent transition metals (Mn, Fe, Co, Ni, Cu, and Zn) have been obtained. The heterometallic molecules that are held together by strong Lewis acid-base …