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 14 of 14 for “"multi-component system"”.
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Modeling Fischer Tropsch synthesis in two-phase, continuous, well-mixed slurry reactors
… of such a supercritical, highly non-ideal, multi-component system requires the detailed knowledge of the reaction mechanism, reaction kinetics, phase-equilibrium and reactor technology. The objectives of this work were to: develop a complete Fischer Tropsch model, predict the hydrocarbon …
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Magnetic densimeters: design and operation
… magnetic densimeters, one using a r.f. sensing system and one using an optical sensing system. Both systems have the same control system. Based on a series of experiments, it appears that the optical sensing densimeter is much easier to handle than the one using r.f. sensing. This is because the …
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Isolation, Purification, and Chemical Characterization of the Dihydroxamate-Type Siderophore, "Schizokinen," Produced by <em>Rhizobium leguminosarum</em> IARI 917.
… for Fe<sup>3+</sup>. Siderophores are part of a multi-component system that actively transports the iron-siderophore complex into the cytoplasm. Rhizobia are characterized by their ability to form symbiotic relationships with leguminous plants, where they can fix nitrogen for the host plant and …
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Applying engineering principles to the design and construction of transcriptional devices
… design and construction of engineered biological systems. I begin by applying these principles to a key application area of synthetic biology: metabolic engineering. Abstraction is used to compile a desired system function, reprogramming bacterial odor, to devices with human-defined function, then …
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Real-time Three-Dimensional DNA Microarrays: How Well Can We Distinguish Between Related Target Sequences?
… demonstrated in thermal dissociation curves in a multi-component system, showing promise for distinguishing between related sequences. Finally, the utility of including mismatch probes on the array for distinguishing between related sequences was explored computationally.
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Models for Data Analysis in Accelerated Reliability Growth
… of a reliability growth program for a complex multi-component system. Each component has multiple failure modes and the growth program consists of multiple test-fix stages with corrective actions applied at the end of each stage. The first group of methods considers time-to-failure data and …
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In Situ Alloying of Titanium via Laser Powder Bed Fusion
… of producing complex, customised titanium components. However, its broader adoption is constrained by limited commercial alloy options, the high cost of pre-alloyed powders, and pronounced anisotropy arising from coarse columnar grain growth. This thesis addresses these challenges through …
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Modeling Aspects of Military Readiness
… Defense investment in predictive analytics for component health. We develop an index-style decision policy for integrating signal-based pre-emptive component repairs with the recurring time-based preventive maintenance tasks for the overall, multi-component system. The results highlight that the …
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Managing the restoration of membranes in reverse osmosis desalination using a digital twin
… This research developed a decision support system (DSS) for evaluating membrane restoration strategy. The engine of the DSS is a digital twin (DT), a virtual representation of wear (degradation) and restoration of membrane elements in a RO pressure vessel. The basis of the DT is a …
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Investigation of Asphaltene Adsorption at Liquid-Liquid and Liquid-Solid Interfaces
<p>Asphaltenes, as indigenous components in crude oils, are believed to play an important role in the petroleum production and processing industry. For example, asphaltene molecules can adsorb onto the water / oil interface like the amphiphiles and hinder water droplet coalescence, resulting in the …
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Towards Engineering and Understanding of Guest Host Interaction Between Dopants and Liquid Crystals in Liquid Crystal Displays
… used liquid crystal material is typically a multi-component system that exhibits many physical properties such as birefringence, dielectric anisotropy, voltage holding ratio, visco-elastic, guest-host effect and the kinetic switching response time of the cell between the on state and off …
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Fabrication of InGaP LEDs on a graded buffer substrate
… of an infrared laser diode and a frequency multiplier. Light emitted by the laser diode is passed through a frequency doubler, which is a non-linear device that combines photons to create photons of higher energy within the material. For commercially available green lasers, an infrared laser …
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Function of the ATP-dependent Metalloprotease FtsH during sporulation in Bacillus subtilis
… the construction of a cold-inducible expression system. The major finding of this thesis is that the FtsH protease interferes with the synthesis and/or phosphorylation of Spo0A, the master regulator during initiation of sporulation called phase 0. In the ftsH knockout, the amount of Spo0A is …
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Electron beam lithography of molecular glass resist films prepared by physical vapor deposition
… 193 nm immersion lithography with applied multi-patterning gradually reaches its limits in the ongoing miniaturization. But for the continuation of miniaturization of integrated circuits in the long term, a further progression in the processing steps as well as the development of further …