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 19 of 19 for “"RPO"”.
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In Vivo Regulation Of Transcription Of The Escherichia Coli Rna Polymerase Genes Rpo(b) And Rpo(c)
The transcriptional control of two genes rpoB and rpoC encoding b and b', the major protein subunits of E. coli RNA polymerase, was examined in vivo. Restriction fragments from the rplKAJLrpoBC cluster of genes were fused to a lacZ gene carried on a lambda phase vector. The transcriptional activity …
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An Assessment of 3D Tracking Systems and Lidar Data for RPO Simulation
This thesis aimed to develop a rendezvous and proximity operation simulation to be tested with physical sensors and hardware, in order to assess the fidelity and performance of low-cost off-the-shelf systems for a hardware-in-the-loop testbed. With the push towards complex autonomous rendezvous …
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Novel analytical strategies for tracing the organic carbon cycle in marine and riverine particles
… new applications for ramped pyrolysis/oxidation (RPO), a growing method of POC characterization by thermal stability. By coupling RPO to stable and radiocarbon isotope analyses of riverine POC, I quantify three thermally distinct soil organic carbon pools mobilized by the Amazon River, and …
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Novel analytical strategies for tracing the organic carbon cycle in marine and riverine particles
… new applications for ramped pyrolysis/oxidation (RPO), a growing method of POC characterization by thermal stability. By coupling RPO to stable and radiocarbon isotope analyses of riverine POC, I quantify three thermally distinct soil organic carbon pools mobilized by the Amazon River, and …
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Rendezvous approach guidance for uncooperative tumbling satellites
… of a Rendezvous and Proximity Operations (RPO) guidance algorithm for approaching uncooperative tumbling satellites has multiple purposes including on-orbit satellite servicing, space debris removal, asteroid mining, and on-orbit assembly. This thesis develops a guidance algorithm within …
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Molecular analysis of cyanobacterial RNA polymerase genes
The RNA polymerase genes rpoBC1C2 (the rpoB and rpoC2 are incomplete) of the cyanobacterium Nostoc commune have been cloned, sequenced, and expressed both in vivo and in vitro using E. coli systems. The rpo genes encode large subunits of DNA-dependent RNA polymerase. Two genes in N. commune, rpoC1 …
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Developments for the Characterization of Spacecraft Proximity Operations for Improved Space Situational Awareness
… rendezvous and proximity operations (RPO) in space. A Bayesian Belief Network, a probabilistic evaluation tool, is introduced in order to fuse information sources together. Various combinations of relative orbital dynamics, vehicle characteristics, and environmental conditions can be …
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Sensory directed determination of odor important components of natural (raw) and roasted pecan oil
… pecan oil could prove to be useful. The purpose of this study was to qualitatively and quantitatively analyze the aroma profile of natural (raw) pecan oil and roasted pecan oil using sensory descriptive analysis followed by instrumental aroma analysis to determine how the perceived aroma …
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Structural and Functional Studies of Mycobacterial General Transcription Factors RbpA and CarD
… assays and in a kinetic assay measuring RPo formation, indicates that these two factors work together to activate transcription. By teasing apart the effects of the two factors on kinetic steps in RPo formation, this work shows that the RbpA and CarD cooperatively drive formation of a …
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Effect of a derivatized oxide layer and environment on the bond durability of aluminum/polyimide and titanium/polyimide bonds
… involving the reaction of phosphonic acid (RPO(OH)2), R=butyl or vinyl for aluminum and R=vinyl for titanium, has been investigated. The durability of phosphonic acid-pretreated samples was compared with that for P2-etched (ferric sulfate-sulfuric acid) adherends. Samples were bonded with …
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Cryo-EM Studies of Bacterial RNA Polymerase
… and without TraR, and an open promoter complex (RPo) using a ribosomal promoter that is regulated by TraR, rpsT P2. My cryo-EM structural analyses show that TraR regulates Eσ<sup>70</sup> transcription initiation by binding and inducing major conformational changes to mobile RNAP domains that …
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RURAL POLITICAL AGENCY AND LOCAL POLITICS IN GLOBALIZED MARKET
… participation in Rural Producer Organizations (RPOs), popular community-based farmer organizations, which have proliferated over the last decade. Two research questions guide this project: (1) What are the conditions that explain rural participation in RPOs in Indonesia? and (2) What are the …
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Working with mentally handicapped people : different layers of intra-personal and inter personal experience
… of how a better understanding of resources is rPo-nrPr"' who provide the care a so as to can help improve provision for people with a mental handicap. The case study focuses on the subjective experiences of professional caregivers while working in a non-governmental organisation which provided …
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Understanding terrestrial organic carbon export : a time-series approach
… sample, I developed a kinetic model linking RPO-derived activation energy, 13C composition, and radiocarbon content. This tool provides a novel method to fundamentally address the unknown relationship between OC remineralization rates and chemical structure in various environmental settings. …
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Understanding terrestrial organic carbon export : a time-series approach
… sample, I developed a kinetic model linking RPO-derived activation energy, ¹³C composition, and radiocarbon content. This tool provides a novel method to fundamentally address the unknown relationship between OC remineralization rates and chemical structure in various environmental settings. …
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Organic-inorganic hybrid materials: new functionalised polyoxotungstates
… did not proceed as expected, instead one of the RPO groups was removed from the cluster, producing a new set of singly derivatised clusters, [SiW\(_{10}\)O\(_{36}\)(R\(^2\)PO)]\(^{6-}\) from [SiW\(_{10}\)O\(_{36}\)(R\(^2\)PO)\(_2\)]\(^{4-}\). These create potential for a product with …
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Toward catalytic antibodies capable of ergopeptine hydrolysis
… Problems were experienced forming the RPO(OCH₂CH₃)X where X is NH(C₆H₄NO₂), and R is a protected benzyl system, successful generation of model compounds where X is NHCH₂(C₆H₅) and O(C₆H₄NO₂) was achieved. The compound HOOCCH₂CH₂CONH(C₆H₄)CH₂PO(OH)O(C₆H₄NO₂) was synthesised as a …
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Using a Curvilinear Coordinate System for Satellite Relative Motion
The number of dynamics needed to model the motion between a Chief and Deputy satellites has grown greatly since the introduction of the Hill, Clohessy-Wilshire (HCW) equations of motion were introduced. The models have grown to include various things like perturbations, specifically drag, J2, and …
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A* Node Search and Nonlinear Optimization for Satellite Relative Motion Path Planning
The capability to perform rendezvous and proximity operations about space objects is central to the next generation of space situational awareness. The ability to diagnose and respond to spacecraft anomalies is often hampered by the lack of capability to perform inspection or testing on the target …