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 175 for “""Random Chemistry""”.
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Biologische Untersuchungen zu Inhibitoren der Acetylcholinesterase und Erzeugung von neuen Leitstrukturen mittels "Random Chemistry"
… Einsatzes zu gelangen. Auch das Verfahren der „Random Chemistry“ kam zum Einsatz, um neue und interessante Strukturen zu erzeugen, die eventuell bessere Eigenschaften als die Ausgangssubstanz besitzen. Der Grundgedanke dieses Verfahrens liegt in der Ausnutzung der durch gamma-Strahlen …
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PHYSICAL CHEMISTRY OF COLLOIDAL-NANOPARTICLE INTERACTIONS
… are formed via spontaneous, non-directional and random complexation. The thermodynamic nature of complexation was resolved by discriminating the free energy change into its enthalpic and entropic contributions through circular dichroism and isothermal titration calorimetry. The dominant entropic …
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Polyoxoniobates: How Solution Chemistry Helps to Understand the Solid State
… cation nearest-neighbor exclusion algorithm on a random cubic lattice with 2:1 Nb:(Mg/Zn) occupancy. The ordered structure obtained is consistent with current structural data obtained on these compounds.
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Management of high school learners academic performance in Chemistry
Performance of learners in Chemistry in South Africa has been below the international average. This study intended to investigate the management of high school learners’ academic performance in Chemistry as a component of Physical Science. The study employed mixed designs which are qualitative and …
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Gold-nickel surface alloy chemistry with oxygen and carbon monoxide
… carbon monoxide oxidation on gold-nickel random surface alloys is molecularly (rather than atomically) adsorbed oxygen, and weakly bound carbon monoxide. To characterize these adsorbates, saturation coverages of each diatomic on Au-Ni(111) held at 80 K are separately measured via …
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Quantification of molecular aggregation equilibria using spectroscopic measurements and random mixing modeling
… theoretical model is developed based on random statistics in which it is assumed that the concentration of each chemical species is everywhere identical to its bulk concentration. Solute-ligand (direct) and ligand-ligand (cooperative) interactions are incorporated into the RM model and …
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THE THEORY OF COMBINATORY DIFFERENTIATION AND LOCALITY IN QUANTUM CHEMISTRY
… the ideas from my PhD study related to quantum Chemistry. These ideas are alternative mathematical foundations to their respective problems. Two of the three ideas come with a working implementation that empirically demonstrates significant advantages over the state of the art with no trade-offs …
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SYNTHESIS AND CHARACTERISATION OF NOVEL BIOPOLYMERS VIA CLICK CHEMISTRY
… a general introduction on biopolymers and Click chemistry with emphasis on the related literature to the present work. Chapter two involves the application of Click chemistry on model compounds; 3-methyl benzyl alcohol and phenol. The resulting products were successfully prepared via Click …
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Covalent Modification that Enhances Protein Properties and Functions and Folds Random Coil into Alpha-Helix
… modify proteins covalently to induce folding in random coil sequences, prevent aggregation, surface adsorption and for increasing the thermal stability against aggregation of proteins.</p> <p>The first chapter describes the chemistry for modifying the lysine residues in proteins with alditols …
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Free approximation of transport properties in organic system using Stochastic Random Matrix Theory
… a study and application of Stochastic analysis- Random Matrix Theory(RMT) to fast calculate the transport properties of large static systems with relatively large disorder in mesoscopic size. As a major topic of Random Matrix Theory(RMT), free convolution managed to approximate the distribution …
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Characterizing Wetland Hydrology, Chemistry, And Soils For An Endemic Crayfish, The Piedmont Blue Burrower
… burrowing crayfish, groundwater hydrology, water chemistry, and soil properties were assessed to determine their importance for the state-listed endangered, primary burrower <em>Cambarns harti</em>. Groundwater hydrology and chemistry were monitored from shallow wells installed among <em>C. …
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Morphology and crystal structure of random, main chain, semi-flexible, thermotropic liquid crystal polymers
"The crystal structure and morphology of random, main chain, thermotropic liquid crystal polymers (LCP's) of equimolar amounts of the following structural units (with n equal to 4, 5, 6 and 7 in ""A"") have been examined by electron microscopy and diffraction:(DIAGRAM, TABLE OR GRAPHIC …
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Extending Students' Practice of Metacognitive Regulation Strategies in the Undergraduate Chemistry Laboratory and Investigation of Pb2+ Binding to Calmodulin with Circular Dichroism and Molecular Dynamics Modeling
… dissertation was composed of two projects in chemistry education and benchwork/computational biochemistry. The chemistry education research explored students' practice of metacognitive strategies while solving open-ended laboratory problems when engaged in an instructional environment, the …
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Boron Subnaphthalocyanines: The First Unsubstituted Examples, New Boron Lewis Acids, Random Bay Position Halogenation, and Computational Material Screening
… to be alloyed mixtures of derivatives that are randomly chlorinated in the bay positions, resulting from their formation from boron trichloride. These alloyed mixtures were shown to have a positive influence on the functionality of organic photovoltaics whereby an increase in the amount of bay …
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Factors Affecting Chemistry Performance in Ordinary Level NECTA Examinations from 2009 to 2012: A Case of Selected Schools in Dar es Salaam.
… of the study was to find out factors affecting chemistry performance in Ordinary Level National examinations from 2009 to 2012 with reference to selected schools in Dar es Salaam City. From 2008 to 2012 the overall National chemistry pass rate in Ordinary Level secondary schools were below 50%. …
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Development and analysis of a gravity-simulated particle-packing algorithm for modeling optimized rocket propellants
The random heterogeneous morphology of modern solid rocket propellant formulations has traditionally been difficult to characterize and quantify. Current computational simulations of these formulations require an accurate description of the packing arrangement in order to correctly model the …
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Molecular and Polymeric Materials Based On Asymmetrically Substituted BF2 3-Cyanoformazanates
… and their incorporation into polymers. CuAAC chemistry was used to synthesize two additional asymmetric BF2 complexes and a side product that was identified as a symmetric dimer. Spectroscopic and electrochemical properties of these compounds are described. Incorporation of an asymmetric …
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Synthesis and characterization of thermo-responsive polyethers
… thermo-responsive properties. Thermo-responsive random copolymers of glycidyl methyl ether (GME) and epoxyhexane (EH) were synthesized. Once their properties were studied, they were grafted onto hyaluronic acid to obtain gelation at temperatures above the phase transition temperature of poly …
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Continuous and discrete time stochastic transport: mathematical models of fractional transport on networks and in a continuum
… systems is paramount in fields including chemistry, physics and finance. A major component of these systems is diffusion; a transport process whereby particles move from a region of high concentration to a region of low concentration. Incorporating non-Markovian behaviour, as many real …
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