Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 536 for “"metal ions"”.
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Fluorescent sensors for metal ions
… importance in recent years due to their applications in many fields including trace analysis in chemistry and biochemistry. Using the "dual fluorescence" properties of TICT state compounds (Twisted Intramolecular Charge Transfer which gives an extra red-shifted emission band) and the key property …
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Localization of metal ions in DNA
… novel complex formed between DNA and transition metal ions under alkaline conditions. The unique properties of M-DNA were manipulated in order to rationally place metal ions at specific regions within a double-stranded DNA helix. Investigations using thermal denaturation profiles and the ethidium …
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Electrochemical Measurement of Metal Ions in Water
Pb2+ between 0 and 50 PPB is measured electrochemically in synthetic and real drinking water by square wave anodic stripping on a gold working electrode. The rate constant of the anodic stripping of Pb0 from gold has a rate constant of approximately k0 = 3 s-1. A set of square wave profiles defined …
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The Stereochemistry of Some Complex Metal Ions
Made available in DSpace on 2014-12-05T19:37:27Z (GMT). No. of bitstreams: 1 6003901.pdf: 1389661 bytes, checksum: de1e301f8f7ebe460a312e3a2963ffda (MD5) Previous issue date: 1960
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Polarized Crystal Spectra of Transition-Metal Ions
Made available in DSpace on 2014-12-05T19:37:34Z (GMT). No. of bitstreams: 1 6100096.pdf: 2107522 bytes, checksum: ff03f082d9639a2a7974a824db55ad42 (MD5) Previous issue date: 1960
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Lipsome encapsulated antimicrobial metal ions and essential oils
… that treatment with unencapsulated combinations of TTO and Ag+ exerted a synergistic effect against P. aeruginosa (FLCI = 0.263) and indifferent effects against S. aureus and C. albicans (0.663 and 0.880, respectively). Using polyvinyl alcohol (PVA) emulsified agents in combination, showed …
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Effect of micelles on flotation of metal ions
… and the dependency of the adsorption of divalent metal counterions such as copper and zinc at the air-water interface on its concentration in the solution, was undertaken in order to better understand the process of ion flotation. The study is divided into two broad categories, the first of which …
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Electronic structure of transition metal ions and clusters
… and reaction mechanisms of open-shell transition metal ions and clusters. The early part of the thesis (Chapters 2 and 3) is devoted to high-valent metal-oxo species, both mono- and bimetallic, while Chapter 4 describes some aspects of copper-catalysed carbon-carbon bond formation. Finally, …
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Metal-ions in biofluids-aluminium in-vitro studies
[Page ii missing] The stoichiometric stability constants of aluminium III of inorganic phosphates and adenine nucleotides have been determined at ionic strength. I = 0,15 and a temperature of 25°C using glass electrode potentiometry and computer modelling. The protonation sequence for …
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Development of an EQCM-based sensor for metal ions
… crystal microbalance (EQCM)-based sensor for metal ions. Designed for use in the nuclear industry, the sensor consists of a gold (Au) piezoelectrode modified by a Nafion® polymer layer impregnated with a cationic hydroxainic acid (HA), a ligand showing oxidation state specific selectivity …
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Role of metal ions in fermentative metabolism of yeast
This thesis concerns the influence of several metal cations on the growth and fermentative metabolism of industrial strains of yeast. Experiments were conducted in laboratory growth media (both synthetic and complex) and industrial fermentation media (molasses and malt wort) in order to investigate …
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Removal of metal ions from solution by foam fractionation methods
… method for separation of solute from liquid solutions. The physical chemistry of a foam-liquid system was investigated including studies of foam density, foam stability and foam drainage, and the counter-current flow of liquid and foam. The experimental results obtained were tested with models …
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Complex formation equilibria of ligands with metal ions of biomedical interest
… and buffers to maintain physiological concentrations of free metal ions, thus preventing their abnormal decompartmentalization, release and trafficking. The main reasons for the anomalous accumulation of non-essential metal ions in the body are environmental exposure and administration of …
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A Study of the Reactivity of Iminopyridinium Compounds with Metal Ions
Please see Thesis for Summary.
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Some aspects of the interaction of humic substances with metal ions
… known chemical structure. Their interactions with radionuclides are particularly important since they provide leaching mechanisms from disposal sites. The central theme to this research is the interaction of heavy metal actinide analogues with humic materials. Studies described focus on …
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The Effect of Pressure on Energy Levels of Transition-Metal Ions
Made available in DSpace on 2014-12-05T17:15:37Z (GMT). No. of bitstreams: 1 6104411.pdf: 2725696 bytes, checksum: 2eac7f9092400f3c7d092f2e15e6c0f3 (MD5) Previous issue date: 1961
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