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 12 of 12 for “"natural transformation"”.
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Laboratory evolution and natural transformation in Acinetobacter baylyi ADP1
… chassis for genome engineering due to its high natural transformation rates and metabolic proficiency. Development of ADP1 for biotechnological use however is inhibited by the evolutionary instability of the competence, the large homology requirement for the efficient transformation of DNA into …
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A Novel Mechanism for Site-Directed Mutagenesis of Large Catabolic Plasmids Using Natural Transformation
Natural transformation is the process by which cells take up DNA from the surrounding medium under physiological conditions, altering the genotype in a heritable fashion. This occurs without chemical or physical treatment of the cells. Certain Acinetobacter strains exhibit a strong tendency to …
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Natural transformation and growth inhibition of azotobacter vinelandii in the presence of adsorbed oxytetracycline
… oxytetracycline adsorbed to sterile soil on the natural transformation and inhibition of the soil bacterium Azotobacter vinelandii was investigated. The transformation frequency by both plasmid and chromosomal DNA was not significantly affected by the addition of adsorbed OTC, showing that the …
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Bacterial transport and horizontal gene transfer in subsurface: multiple-scale experimental studies
… and contributes to bacterial evolution. Natural transformation, one mechanism of horizontal gene transfer, is defined as the process by which bacterial cells successfully take up and incorporate extracellular DNA. The extracellular DNA and the bacterial cells are both exposed to various …
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Towards Novel Methods of Mutagenesis for Histophilus somni
… restriction modification system. Mutagenesis by natural transformation in Haemophilus influenzae is well established and may be enhanced by the presence of uptake signal sequences (USS) within the genome. We hypothesized that natural transformation occurs in H. somni because its genome is …
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Interaction graphs derived from activation functions and their application to gene regulation
… levels of other genes.</p> <p>First we develop a natural transformation of activation functions and their derived interaction graphs, called conjugation, that is related to a natural transformation of signed digraphs called switching isomorphism. This is a useful tool for the analysis of …
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Internal enriched categories
… the notions of V-enriched category, functor and natural transformation. We then develop such theory, which presents many of the good properties of standard enriched category theory. Notably, under suitable conditions, the category of internal V-enriched categories and their functors is monoidal …
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Shape changing composite material design for interactions
… water-driven edible SCMC material. Programmable transformations, multilayer composites and sequential-foldings were engineered with these materials. A customized fabrication strategy, combining wet lab processes and additive manufacturing, was introduced, while applications were presented to …
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Microbial Evolution In Sea Ice: Communities To Genes
… gene transfer by conjugation, transduction, or natural transformation in sea ice, addressed in Chapter 3 by measurement of the concentrations of bacteria, viruses, and extracellular free DNA in natural sea ice. These hypotheses were supported by the measurement of up to 100× more extracellular …
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BACTERIAL PLAYERS IN CROP SYSTEMS: BENEFITS AND RISKS IN THE " ONE HEALTH" PERSPECTIVES.
… aiming to characterize the resistome in this natural environment and applying different techniques, like Minimum Inhibitory Concentration (MIC) analyses and disk diffusion test. Taxonomic identification showed that the established collection encompasses, besides faecal-indicator-bacteria, …
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Rewriting-based formal modeling, analysis and implementation of real-time distributed services
… in Orc. Moreover, the dissertation develops a natural transformation path from formal models of Orc programs to actual, provably-correct, distributed implementations with physical timing, which enable observing actual possible behaviors of service orchestrations in realistic environments. For …
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A Wyler-type approach to categorical topology
… the category of complete lattices. This leads naturally to the study of categories of T-models corresponding to theories into categories other than the category of complete lattices. It is shown, for example, that a concrete category corresponds to a poset-valued theory just in the case that it …