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 13 of 13 for “"bacterial transport"”.
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CHEMICAL AND KINETIC STUDIES OF BACTERIAL TRANSPORT AND CHEMORECEPTOR PROTEINS
… component of the high affinity L-arabinose transport system of Escherichia coli, forms a covalent adduct with the chromophoric probe 2-chloromercuri-4-nitrophenol (MNP) at a single site, cysteine residue 64. The addition of L-arabinose to MNP-modified L-arabinose-binding protein causes an …
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Structure & Function of Bacterial Transport Machines in their Cellular Context
… having a membranous partition is the ability to transport substances into and out of cells as part of life-sustaining functions. In pathogenic bacteria, transporters aid infection and survival in the host. Two such transporters in Gram-negative bacterial species are the MacA-MacB-TolC …
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Bacterial transport and horizontal gene transfer in subsurface: multiple-scale experimental studies
Horizontal gene transfer rapidly changes bacterial genetic repertoire 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 …
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Nutrient and Bacterial Transport From Agricultural Lands Fertlized With Different Animal Manures
… of manure is responsible for nutrient and bacterial pollution of downstream waterbodies. Manure application based on the crop phosphorus (P) requirements has been recommended as a viable method to reduce nutrient pollution. A plot scale study was conducted to measure the loss of nutrients …
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Microbial transport in volcanic tuff Rainier Mesa, Nevada test site
… water flow paths. To address the potential for bacterial transport with water in deep fractured tuffs, flow water and six rock samples were taken progressively farther from a deep subsurface fracture flow system for microbiological and geological comparisons. Differences in the composition of …
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Electric Field Effects on Bacterial Deposition and Contaminant Sorption as Drivers of Bioavailability
… promote contaminant availability should foster bacterial transport and/or control interactions of chemicals with environmental matrices. Direct current (DC) electric fields and their electrokinetic phenomena (electro-migration, electroosmosis, and electrophoresis) have the potential to promote …
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Transport of copiotrophic bacteria in oligotrophic coarse soils: a Monte Carlo analysis
… in most environments. Little is known of the transport of pathogenic, copiotrophic bacteria in coarse-grained soils below on-site drainfields placed in mountainous soil environments thought to be oligotrophic. A stochastic bacterial transport model was developed to analyze bacterial …
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Estimating Bacterial Loadings to Surface Waters from Agricultural Watersheds
… cause of water body impairment and existing bacterial models are predominantly based upon laboratory-derived information, bacterial models are needed that describe bacterial die-off and transport processes under field conditions. Before these bacterial models can be developed, more …
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Monitoring Bacteria Cultures Using Near Infrared (nir) Binary Spectronephelometry (bsn), Raman Spectra and Principal Component Analysis (pca)
… media components that define the state of native bacterial cultures, because of changing turbidity. A new technique, binary spectronephelometry (BSN) has the same or better sensitivity and precision for population monitoring as optical density at 600nm (OD600), while simultaneously measuring …
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Physical and Deep-Learning-Based Explorations of Microbe-Mediated Reactive Transport Processes in Porous Media Across Scales
Reactive transport (RT) simulators are important tools often used by researchers to gain insights into subsurface processes. These multi-physics simulations attempt to represent many hydro-biogeochemical phenomena, but they often fall short in terms of computational speed and physical accuracy. …
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Development of hydrograph-based approach to modeling fate and transport of sediment-borne bacteria in lowland rivers
… approach, called Hydrograph-based Approach, to bacterial fate and transport modeling in lowland rivers. The new hydrograph-based approach is simple and efficient in terms of its less data requirements as compared with other models. The new approach utilizes widely available hydrographs as the …
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Microfluidics for bacterial chemotaxis
Bacterial chemotaxis, a remarkable behavioral trait which allows bacteria to sense and respond to chemical gradients in the environment, has implications in a broad range of fields including but not limited to disease pathogenesis, in-situ bioremediation and marine biogeochemistry. And therefore, …
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Investigating the mechanism of LolB, the Bacterial Outer Membrane Lipoprotein Receptor
… of outer membrane lipoproteins is essential for bacterial survival and requires the dedicated trafficking system LolABCDE. In the terminal stage of transport, LolB, the outer membrane receptor, receives lipoproteins from the periplasmic chaperone LolA and delivers them into the membrane. The …