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 30 for “"Meta-stable"”.
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DNA based networks, nanostructures, and meta-stable states
… The third approach presented here aims to create meta-stable DNA nanostructures based on a DNA hairpin loop that can mimic the enzyme-substrate binding mechanism. This mechanism is demonstrated using a "strand displacement strategy" (SDS). Lastly, we employed a novel way of organizing hairpin loop …
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Experimental Determination of the Nuclear Magnetic Octupole Moment of 137Ba
… shelving to chart the hyperfine structure of meta-stable 5D states in <sup>137</sup>Ba and provided the most precise value of the nuclear magnetic octupole moment in any atom to date.
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Environmental behavior of hafnium : the impact on the disposition of weapons-grade plutonium
… The solubility of hafnium hydroxide and a meta-stable hafnium carbonate solid phase are studied via solubility experiments using ICP-AES. An upper bound for the stability constant of the first carbonate complex is determined. The solubility of hafnium oxide is investigated via solubility …
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Spin Crossover under Extreme Conditions: A Structural Approach
… long-range order at low temperature. The meta-stable high spin (HS*) state that arises as a result of the Light Induced Excited Spin State Trapping (LIESST) effect has also been structurally characterised at 30 K. Further single crystal X-ray diffraction experiments at high pressure have …
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Engineering Characteristics of Coal Combustion Residuals and a Reconstitution Technique for Triaxial Samples
… to sediment out, forming deep deposits of meta-stable ash. As the life of the disposal facility progressed, new phases of the impoundment were constructed, often using the upstream method. One such facility experienced a massive slope stability failure on December 22, 2008 in Kingston, …
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Metallic MoS2 Nanosheets for Lithium-Sulfur Batteries
… of lithium-sulfur (Li-S) batteries using metallic MoS2 nanosheets as functional host materials. While our prior research established lithiated MoS2 (LixMoS2) as an effective sulfur host for Li-S batteries, two major barriers remain to practical implementation of LixMoS2: incomplete …
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Molecular origins of cocoa butter triclinic polymorphism
… that the crystal structure of CB in its meta-stable form IV and its transformation to form V was controlled by POS. The ternary phase behavior between POP, POS and SOS in their triclinic crystal polymorphic form was determined herein. POP:POS mixtures displayed a strong eutectic region. …
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A new framework for the interpretation of modulated martensites in shape memory alloys
… explain the experimental observation of meta-stable MMs, as opposed to the expected ground state martensite phase. To date, a general approach for predicting the properties of the MM structure that will be observed for a particular material has not been available. In this work, we develop …
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Functional nucleic acids as substrate for information processing
… prediction problem, not only in the multi-stable states level, but also include the interactions among molecules that occur in each meta-stable state. The realisation of our computational protocol are evaluated by generating computational nucleic acids units that resembles synthetic RNA …
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Development of Methods to Predict and Enhance the Physical Stability of Hot Melt Extruded Solid Dispersions
… water-soluble drugs. However, because of their meta-stable nature, the physical stability of amorphous solid dispersions has been considered to be the main obstacle for their formulation development and commercialisation by the pharmaceutical industry. The aim of this project was to understand, …
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Investigation of an immune algorithm and differential evolution to study folding of model proteins
… secondly, to record unoccupied lattice sites of meta-stable conformations to reduce the risk of performing infeasible joint mutations during the mutation phase for the Immune algorithm, and thirdly, to improve the standard of mutations performed by Differential Evolution. A novel profiling system …
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Preparation and Characterization of Solid Solutions of Ternary and Quaternary Antimony Oxides
… to form a tetragonal modification, reported as a meta-stable modification of MnTa2O6 from x = 0.4, 0.5, 0.6. These new tetragonal compounds exhibit antiferromagnetic ordering under the Néel temperature.
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Structure of and Phase Transformations in Bulk Amorphous (GaSb)i_x(Ge2)I
… transformations in (GaSb)i_z(Ge2)z owing to the meta-stable nature of samples. The semiconductor-to-metal transition observed previously is found to be due to percolation through the high pressure metallic phase GaSb II. It is showed that the combination of two structural techniques, powder …
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Development of Mass Spectrometric Methods for the Analysis of Components and Complex Interactions in Biological Systems
… through the skin effectively delivering it to a meta-stable type cancerous site. Previous in vitro studies, combined with gas phase mass spectrometry studies, have shown that a stronger binding affinity equates to a greater efficacy of the drug. For the determination of drug:dye complex binding …
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A study of the synthesis, structure, and ionic conductivity of sodium and lithium lanthanide pyrosilicates, A3LnSi2O7
… Na3LnSi2O7, were made by the ceramic method. The meta-stable Li-silicates, Li3LnSi2O7, were formed by a molten salt ion exchange of Li+ for Na+ in Na3LnSi2O7. Structural models for the two compounds were refined against powder X-ray and neutron diffraction data using the Rietveld method, and …
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Noncanonical recognition and degradation of a stable soluble protein by AAA protease FtsH
… suggested that FtsH only degrades meta-stable proteins despite its ability to extract protein substrates from the membrane for degradation. These results motivated me to reinvestigate the determinants in a substrate required for effective FtsH unfolding. In this thesis, I present …
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Kinetics and dynamics controlling proton-coupled electron transfer in ribonucleotide reductase
… an expanded kinetic model for turnover. Trapped meta-stable states of the active [alpha]₂[beta]₂ complex are dictated by the translocation of a single charge and attenuate dissociation 10⁴-fold. These trapped states were leveraged to resolve the stoichiometric distribution of the Y¹²²* cofactor …
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Finite element study of geosynthetic encased stone columns in sensitive soft clay
… soft soils. Although these soils have a meta-stable micro-structure, models that developed for simulating structured firm soils are not suitable for simulating sensitive soft soil features. Thus, a new model was formulated. The new model can degenerate back to a Modified Cam Clay model. …
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Rekristallisationskinetik von Phasenwechselmedien
… based covalently bonded alloys which exist in a meta-stable amorphous phase at room temperature. Contrary to silicon based semiconductors these materials exhibit a large property contrast between the amorphous and crystalline phase. This is employed for optical and electronic data storage where …
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Probing Matter with Photons, Electrons and Neutrons: A Study of Water and Flax
… stability regions of the different structures. Meta-stable regions relating to transformation and nucleation require further investigation and are often overlooked in these diagrams. Transformation between adjacent phases portrayed in two dimensions depends on the path taken to achieve the …
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