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A comparison of methods of determining the amount of radium in rocks and minerals
(University of Missouri--Columbia, 1914)
This paper is chiefly the outcome of a study of the radioactivity of the rock at different depths from the surface obtained during the drilling of the University deep well number 2. The first method described by J. Joly ...
Computational studies of three chemical systems
(University of Missouri--Columbia, 2011)
The subject of this dissertation is the use of electronic structure calculations to examine and supplement the experimental observations of three different chemical systems. Both ab initio and DFT methods have been employed. ...
Determination of total selenium and seleno-amino acids in yeast and aquatic organisms by liquid chromatography and inductively coupled plasma mass spectrometry
(University of Missouri--Columbia, 2007)
The primary goal of this dissertation research was to develop methods for routine speciation analysis of selenium in tissues. A method for total selenium using on-line stable isotope dilution analysis with conventional ...
Advancing Uranium(III) reductive chemistry through hetroleptic metallocene aryloxide ligand frameworks
(University of Missouri--Columbia, 2023)
This dissertation looks at the reductive chemistry of Uranium (III)bis- pentamethylcyclopentadienyl arylox-ide complexes. For chapter two, the reactivity of two metallocene aryloxide U(III) complexes, [(C5Me5)2U(O-Ar)], R ...
Ammonia elimination from protonated nucleobases
(University of Missouri--Columbia, 2007)
The dediazoniations of the diazonium ion 1 of 4-aminopyrimidine and of the tautomeric cytosinediazonium ions 2 and 3 are facile and result in the formations of cations 4, 5, and 6. The pyrimidine ring-opening of 4, 5 and ...
Spatially resolved and bulk zinc analysis in biological samples of patients at different stages of Alzheimer's disease by high resolution inductively coupled plasma mass spectrometry
(University of Missouri--Columbia, 2008)
One hypothesis that has gained considerable attention in the pathogenesis of Alzheimer's disease (AD) is trace element toxicity, and various elements, including zinc, have become the foci of renewed interest. The first ...
Radioanalytical multi-elemental analysis : new methodology and archaeometric applications
(University of Missouri--Columbia, 2010)
Several projects are covered in this dissertation: the application of instrumental neutron activation analysis (INAA) and rigorous statistical analyses to the sourcing of Egyptian limestone and Kenyan obsidian, and the ...
Self-assembly of functional metal-seamed pyrogallol[4]arene nanocapsules
(University of Missouri--Columbia, 2022)
C-alkylpyrogallol[4]arenes (PgCns, where n is the represents pendant alkyl chain lengths), bowl-shaped macrocycles, upon deprotonation, can self-assemble with metal ions into dimeric (M8L2) and hexameric (M24L6) metal-organic ...
Strategies for metal colloidal nancrystal synthesis in sustainable media
(University of Missouri--Columbia, 2019)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Over the past decades, the Green Chemistry and Sustainability concept has aroused researchers to denounce their traditional ways of thinking regarding ...
Studies and synthetic methodology of Nampt inhibition
(University of Missouri--Columbia, 2018)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The purpose of this research is to study and synthesize an array of a highly potent pharmaceuticals that can selectively cause apoptosis in various ...
Evaluating the suitability of the human toenail as a biomonitor for manganese status: the one source cohort
(University of Missouri--Columbia, 2007)
Numerous studies have demonstrated that the human toenail is a reliable biomonitor for the intake of Se and other elements. The objective of this study was to evaluate the hypothesis that Mn intake is reflected in toenail ...
LC-MS/MS method development for quantitative analysis of cyanogenic glycosides in elderberry and lipid peroxidation products in mice
(University of Missouri--Columbia, 2021)
of AE cultivars studied ranged from between 0.12-6.38 [micro-gram]/g. In pressed juice samples, the concentration range measured was 0.29-2.36 [micro-gram]/mL and in seeds the amounts was 0.12-2.38 [micro-gram]/g. TCP was highest in the stems and green...
Development of advanced chemometric methods for the analysis of deep-UV resonance Raman spectra of proteins
(University of Missouri--Columbia, 2009)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Ultra violet resonance Raman (UVRR) is a powerful spectroscopic technique for determining the secondary structural content of proteins in solution. ...
Anisotropic organic materials : ferroelectric crystals and spin-polarized radicals
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Anisotropic organic materials are attracting increasing interesting for their highly electro-optic characteristics. We are especially interested in ...
Investigating the bifunctional chelate approach for radiopharmaceutical development
(University of Missouri--Columbia, 2010)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Radiopharmaceuticals are drugs that contain a radioactive atom for the purpose of imaging or therapy of disease. The type of emission determines the ...
Applications of elemental analysis for archaeometric studies : analytical and statistical methods for understanding geochemical trends in ceramics, ochre and obsidian
(University of Missouri--Columbia, 2006)
Three areas are covered in this dissertation: elemental analysis of Caborn-Welborn ceramics, elemental analysis and geochemical characterization of ochres, and construction and implementation of a portable XRF instrument ...
Experimental and theoretical studies of CO2 capture from air and of crystalline, ferroelectric, non-linear optical materials
(University of Missouri--Columbia, 2022)
The combination of experimental and computational chemistry gives us a chance to explore organic materials with more breadth and depth. In this dissertation, we studied different organic materials with both experimental ...
Monte Carlo neutronic simulations for a new approach to parametric INAA and Mo-99 production feasibility at MURR
(University of Missouri--Columbia, 2009)
A novel approach to parametric instrumental neutron activation analysis at MURR has been established. In particular, a detailed MCNP5 steady-state model of the MURR core was developed. The model, which was based on the ...
Variable-temperature [superscript 1]H-NMR and AB initio study of 5-amino-imidazole-4-carboxamide (AICA) : competing paths for amide-H scrambling
(University of Missouri--Columbia, 2008)
5(4)-aminoimidazole-4(5)-carboxamide (AICA and TAICA) is an important precursor for the synthesis of purines in general and of the nucleobases adenine and guanine in particular. Biotic nucleobase synthesis has been studied ...
UF-CRDS: a pulsed uniform supersonic flow apparatus coupled with continuous-wave cavity ringdown spectroscopy
(University of Missouri--Columbia, 2022)
Investigating low temperature reaction kinetics of elementary reactions is key to understanding many phenomena of astrochemical importance. Since the introduction of CRESU (A French acronym that stands for reactions kinetics ...