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 20 of 3731 for “"microbial"”.
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Microbial Dynamics and Mechanistic Insights into a Hydrogenotrophic Denitrifying Microbial Consortium
… greenhouse gases (N2O and CO2). This is due to microbial competition for limited organic electron donors such as methanol and acetate. Recently, autotrophic denitrification using hydrogen as a clean electron donor, also known as “hydrogenotrophic denitrification”, has garnered increasing …
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Unraveling key drivers of microbial community assembly and impacts on microbial function
To view the abstract, please see the full text of the document.
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Microbial metatranscriptomics : towards understanding microbial gene expression and regulation in natural habitats
… the way for a comprehensive understanding of the microbial gene parts list in nature, but a full understanding of microbial gene expression, regulation, and ecology remains a challenge. In this thesis, I present the methodological foundations and applications of deep sequencing-based …
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Kinetics of Microbial Respiration
… a thermodynamically consistent rate law for microbial respiration. Previous approaches to predicting the rate of microbial respiration have relied on empirical relations, such as the Monod and dual-Monod equations, which do not consider how energy available in cell's environment or the …
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Microbial instrumentation utilizing microfluidics
… on 16S rRNA gene sequencing reveals abundant microbial diversity in nature. However, studies of microbiology have been limited by the capabilities to replicate the natural environment or artificially manipulate cells. Advances in microbial instrumentation with microfluidics can break through …
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Microbial transformation of lignin
… on utilization of renewable resources throuqh microbial treatment. This work looks at the concept of lignin bioprocessing from the vantage point of a biochemical engineer. Coriolus versicolor, Phanerochaete chrysosporium and Sporotrichum pulverulentum, which being white-rot fungi are …
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Phenotypic and microbial influences on dairy heifer fertility and calf gut microbial development
… would influence heifer fertility and calf gut microbial development. The objectives of this dissertation were: 1) to examine differences in phenotypes related to reproductive physiology in virgin Holstein heifers based on outcome of first insemination, 2) to characterize the uterine microbiome …
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Microbial succession in human rib skeletal remains and fly-human microbial transfer during decomposition
… decomposition, and skeletonization stages. The microbial communities that facilitate decomposition change in a predictable, clock-like manner, which can be used as a forensic tool for estimating postmortem interval. Chapter 1 introduces this concept by describing the stages of decomposition in …
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Microbial interactions with epithelial surfaces.
Background. Staphylococcus aureus is an important gram positive pathogen that causes a multitude of human diseases. Many of these diseases are associated with the production of staphylococcal exotoxins. Superantigens are a family of staphylococcal exotoxins associated with many of these illnesses. …
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Microbial profiling using metagenomic assembly
… technology to the characterization of complex microbial communities has profoundly affected our appreciation of microbial diversity. The explosive growth of microbial sequence data has also necessitated advances in bioinformatic methods for profiling microbial communities. Data aggregation …
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Microbial degradation of polyester polyurethane
During the course of these studies, polyester polyurethane foam has been found to be readily degraded in soil and marine environments. The incorporation of the formulation biocide Vinyzene E.P. reduced the rate and extent of degradation in test material exposed to soil conditions, but was found to …
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Strategies for engineering microbial communities
… nutrients (i.e., metabolic interactions) shape microbial community structure and dynamics, the ability to reliably predict the metabolic interactions and their effect on microbial communities is still being studied. This dissertation investigates how metabolism and environment shape microbial …
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Multiscale modeling of microbial communities
Although bacteria are single-celled organisms, they exist in nature primarily in the form of complex communities, participating in a vast array of social interactions through regulatory gene networks. The social interactions between individual cells drive the emergence of community structures, …
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Metabolic heterogeneity in microbial populations
… their environment and grow. We model independent microbial cells, each with their own set of enzyme copy numbers sampled from experimental distributions, and use flux balance analysis (FBA) to compute the optimal way that each cell can use its metabolic pathways—an approach we dubbed Population …
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Microbial dynamics of bioleaching consortia
… to metals have been reported for a subset of microbial species of interest, currently, minimal work has been done to quantify the negative effects of these metals when using mixed microbial communities. This information is important as mixed communities are used commercially. Understanding the …
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Emergent behaviors in microbial communities
… structures, and symmetries at larger scales. Microbial communities, which play indispensable roles in nature, are complex active systems that naturally pushes us to the unexplored frontier of emergent phenomena. During my PhD, I studied how some behaviors of microbial communities can be simple …
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Microbial engineering for aldehyde synthesis
… this thesis, we investigate several aspects of microbial aldehyde synthesis. Driven first by the hypothesis that targeted gene deletions could decrease endogenous aldehyde reduction in a model E. coli host strain, we demonstrate that benzaldehyde accumulation occurs upon deletion of a …
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Environmental modulation of microbial communities
Microbial communities are crucial to the health of all ecosystems, and their vast diversity constitutes the majority of species on Earth. A single sample of such a community immediately reveals its complexity, but simultaneously the challenges to understanding its form and function. First, a sample …
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