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 13 of 13 for “"autocatalysis"”.
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Autocatalysis of martensitic transformations.
Thesis. 1977. Sc.D.--Massachusetts Institute of Technology. Dept. of Materials Science and Engineering.
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Mechanistic studies on the asymmetry amplifying, autocatalytic Soai reaction
… is peerless in its efficiency for asymmetric autocatalysis and sensitivity to initial chiral imbalances, making it a sui generis example of a reaction predisposed to evolve toward homochirality. Enantiopure products are obtained in three reaction cycles even with calculated autocatalyst e.e. …
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Stochastic dynamics in spatially extended physical and biological systems
… Homochirality has long been attributed to autocatalysis, a frequently assumed precursor for self-replication. However, the stability of homochiral states in deterministic autocatalytic systems relies on cross inhibition of the two chiral states, an unlikely scenario for early life …
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Boosting Biodetection Signals via Photopolymerization: Strategies for Photocatalyst Amplification
… amplification method using photoredox autocatalysis and apply it to PBA. Through spectroscopic investigations (Chapter 2), we showed that oxygen is consumed stoichiometrically by α-aminoalkyl radical of triethanolamine (TEOA) and reduced eosin Y radical produced during the eosin Y/TEOA …
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The Hormonal Regulation of Growth of Suspension Cultures of Acer pseudoulatanus L. cells
… plant one such process which has been linked to autocatalysis is xylogenesis. Autocatalysis has been implicated in the cell-death hypothesis (Sheldrake, 1973) and requires tha.t IAA is produced as a result of high tryptophan concentrations deriving from the hydrolysed proteins of lysed cells. …
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Modeling of controlled-release drug delivery from autocatalytically degrading polymer microspheres
… the attention to the size-dependent effects of autocatalysis on drug release and a brief review of related mathematical models are presented. The model equations are derived, solved numerically with a computational code developed for this work and described in detail, and compared to the …
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Activation of diboron reagents: The development of mild conditions for the synthesis of unique organoboron compounds
… the mechanism, which showed the possibility of autocatalysis. Attempts to control stereoselectivity were not successful, although these results were rationalized by a dynamic catalyst structure.
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Investigation of the Surface-Electrolyte Interface of Semiconductors and Metals
… of the surfaces with Cl- suppresses nitrate autocatalysis, resulting in higher overpotentials and lower current density. NH3 is observed by SHINERS as a direct nitrate reduction product in the presence of Cl-, rather than NOx species observed on the bare Cu surfaces, indicating a reaction …
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The genesis of the blue amphibole asbestos of the Union of South Africa.
… layers and was propagated by a type of thermal autocatalysis. The temperature gradients in the magnetite layers resulted from their superior heat conductivity combined with differences in depth of burial of the strata. Economic deposits of crocidolite formed where a sufficient number of layers …
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Controlling the alignment and degradation of 3D printed poly-L-lactic acid for redesigned coronary stents
… printed thin (c. 100 µm diameter) samples, where autocatalysis may not play a significant role, needs to be investigated. PLLA-A and PLLA-C were degraded at 50 ◦C and 80 ◦C, with the results compared with degradation at 37 ◦C. Irrespective of the initial microstructure, the results showed that …
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Corrosion and Corrosion Prevention Technology: Revisiting the Fundamentals and Looking Forward
… the response of both hypotheses, and establishes autocatalysis and electrophoresis as potential key unmodeled phenomena in the field. I then delve into the design of anti-corrosion coatings, which suffers from the aforementioned excessive focus on empirical analysis. This section of the thesis is …
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Geochemical drivers of Mn removal in drinking water reservoirs under hypolimnetic oxygenation
This study addressed the geochemical drivers of Mn removal, including pH, alkalinity and the presence of mineral particles. We conducted laboratory experiments and field monitoring at two drinking water reservoirs in southwestern Virginia – Falling Creek Reservoir (FCR) and Carvins Cove Reservoir …