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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 10 of 643 (0.108 seconds)| 1 |
Computational study of chemical reactionsGinovska, Bojana, January 2007 (has links) (PDF)
Thesis (M.S. in computer science)--Washington State University, December 2007. / Includes bibliographical references (p. 41-48).
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Analysis and modelling of residence time distribution in a high speed gas reactorRabbitts, M C 02 July 2015 (has links)
Flow patterns and the associated residence time distribution are
important factors affecting the performance of a chemical reactor.
This dissertation investigates the flow patterns in a scale-model
of a gas reactor where opposing inlet jets are used to create
mixing. The effects of different vessel geometries and gas flowrates
are investigated.
The residence time distribution (RTD) was measured by means of
radioactive tracer techniques. The extremely short mean re^’dence
time in the vessel necessitated the use of sharp tracer pulses and
a computerised digital recording system. Flow visualisation
experiments were also performed to aio interpretation of the
results.
The results were analysed using the method of frequency analysis,
in which the coefficients of the Fourier Series arc used to
characterise the RTD curves. It was found that the shape of the
RTD curve is unaffected by change in flowrate; i.e. the flow
patterns are independent of flowrate over the range investigated.
The geometry of the vessel however plays a major role. The effect
of reducing the length/diameter ratio of the reactor is an increase
in the mixedness in the vessel. Internal recirculation
patterns are well-defined at a higher length/diameter ratio.
The RTD curves were also used to set up mathematical flow models. Simple multi-parameter models were used, where the vessel was
viewed as consisting of interconnected flow regions such as plug
flow, stirred tank, and axial dispersion. Close fits of the
mathematical models to the experimental RTD curves were obtained.
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A study of the diastereoselectivity of [gamma]-chiral-[alpha], [beta]-unsaturated sulfoxides and sulfones in the Michael reaction with lithium dimethyl cuprateWhite, Stephen A. 12 1900 (has links)
No description available.
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Use of chiral auxiliaries in asymmetric inductionLe Roux, Suzanne D. 12 1900 (has links)
No description available.
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Reaction of 5-Chloro-4-methyl-4-Phenyl-1-Pentene with Lithium and with CesiumHansen, James Stanley 08 1900 (has links)
No description available.
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Supersonic expansion from high-temperature sourcesCrumley, Winfred H., Jr. 12 1900 (has links)
No description available.
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Phenylsulfenylation of linear dienolates of 1(9)-octalin-2-ones, Part I Part II, Reactions of lithium Z-3-lithio-3-substituted propenoates with electrophilesSamuels, William Degen 08 1900 (has links)
No description available.
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Reactions of hydrogen peroxide and water with oxygen atoms and with active nitrogen.Roscoe, John Miner. January 1970 (has links)
No description available.
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A study of the reactions of potassium superoxide with water vapor under hyperbaric conditionsStull, Jeffrey Owen 08 1900 (has links)
No description available.
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A study of complexation reactions by the technique of magnetic titrationGraybill, George Richard January 1970 (has links)
Typescript. / Thesis (Ph. D.)--University of Hawaii, 1970. / Bibliography: leaves [189]-194. / xx, 194 l graphs, tables
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