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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 225 for “"Bacterial Growth"”.
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A Theoretical and Experimental Study of Bacterial Growth
Made available in DSpace on 2014-12-10T19:06:58Z (GMT). No. of bitstreams: 1 7219817.pdf: 3305654 bytes, checksum: e51bea52bab1e201eed30e43cf6b0b53 (MD5) Previous issue date: 1972
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Rapid nutrient fluctuations and their implications for bacterial growth
… all lifeforms, rely on resource acquisition for growth, and the tight coupling between bacterial growth physiology and nutrient availability has long been observed. When nutrient environments shift on timescales of hours, days or seasons, bacteria adapt to a physiological steady state …
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Spatiotemporal Characterization of Stochastic Bacterial Growth in Biofilm Environment
… limited by the ability to artificially culture bacterial biofilms in a system that permits the visualization of individual cells. The experiments comprising this thesis research are on-going investigations of bacterial culture systems engineered to provide an environment that mimics biofilms …
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The impact of the leather manufacturing process on bacterial growth
… species including potential pathogens. Many bacterial species such as Bacillus, Staphylococcus, Micrococcus and Pseudomonas were isolated from raw hides/skins, and hides/skins at different stages of leather making process. The extreme environmental conditions present during a conventional …
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Prevention of bacterial growth in platelet products via inclusion of iron chelators
Bacterial infection is a leading cause of morbidity and mortality arising from platelet transfusions (1, 2). Storage of platelet products at room temperature (20 to 24ºC) provides ideal conditions for bacterial proliferation (1, 3-6). Furthermore, platelets are stored in plasma containing …
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Inhibition of Psychrotrophic Bacterial Growth in Refrigerated Milk by Addition of Carbon Dioxide
… However, refrigeration does not prevent growth of all microorganisms present in raw milk (9, 33, 51, 52, 54, 55). Many microorganisms capable of growth at refrigeration temperatures, termed psychrotrophic bacteria, are present as normal contaminants in raw milk supplies. For purposes of …
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Temperature impact on nitrification and bacterial growth kinetics in acclimating recirculating aquaculture systems biofilters
… occurring at higher temperatures and high bacterial mass. Ammonia utilization rate simulated models matched the observed data and assisted in determination of bacterial mass. Future designs and acclimation of the bead filters may be further enhanced by decreasing biofilter acclimation …
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Factors Affecting Efficiency of Ruminal Bacterial Growth and Site of Nutrient Digestion in Cattle
… dietary factors affecting efficiency of ruminal bacterial growth (E) and site of nutrient digestion.
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A Novel High Throughput Platform for Assessing Bacterial Growth and Morphology Enables Rapid Antibiotic Susceptibility Testing
… The MAP enables precise quantification of growth and morphological changes, offering significant applications in clinical and research settings. The primary application of the MAP is antibiotic susceptibility testing (AST), which determines what concentration of antibiotics is needed to …
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Bioluminescence-Based High Precision Bacterial Growth Rate Measurements and Their Potential Application in Quantifying Deleterious Effects of High Mutation Rates
… an apparatus that combines bioluminescence based growth rate measurements with techniques for long-term microbial culture for recording of growth rate dynamics of luminescent Escherichia coli. After a comparison of several culture media, we found that the reproducibility of growth rate …
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The Use of Ceftiofur Sodium in the Extension and Cooled Storage of Equine Semen: Its Effects on Motion Characteristics, pH, Osmolality, and Bacterial Growth
… to the semen extender is warranted to reduce bacterial load and prevent further growth. Naxcel® (ceftiofur sodium, Pfizer Inc., New York, NY) is a third generation cephalosporin antibiotic with high antibacterial activity and a broad resistance to β-lactamases. The purpose of the current study …
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Pathology and mechanisms of increased M.tb growth and dissemination during co-infection with HIV-1
… Further, there is increased TB pathology and bacterial growth associated with co-infection with HIV. TB is the leading cause of death in people who are living with HIV. Here we describe the development of the first animal model of TB/HIV co-infection using the human pathogens themselves. We …
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Effects Of Environmental Factors On Anaerobic Granular Sludge In Upflow Anaerobic Sludge Blanket Reactors
… sufficient amount of these elements for the bacterial metabolism, and excellent COD digestion rates could be maintained in the reactors. Yeast extract showed a strong positive effect on the bacterial growth rate, but had no significant contribution to the specific activity of bacteria.;The …
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Experiment-Based Quantitative Modeling for the Antibacterial Activity of Silver Nanoparticles
… Here, a detailed analysis based on kinetic growth assay and colony forming unit assay has been carried out to study the antimicrobial effect of Ag nanoparticles against Escherichia coli (E. coli) bacteria. It was observed that the presence of Ag nanoparticles increased the lag time of …
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Investigation into the antimicrobial activity of cationic antibacterials.
… by the 2011 WHOs World Health Day was antibacterial resistance. This action served to highlight the serious problem bacterial resistance now presents to healthcare professionals globally. This investigation focussed on the action of four cationic antimicrobial agents against E. coli, S. …
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Effect of penicillin G on the reproduction of Salmonella cholerasuis in the presence and absence of porcine alveolar macrophages in a pharmacodynamic model
… were used to determine if the inhibition of bacterial growth was dose related. Bacterial samples were removed from each of the four experimental chambers at six times points after drug administration in order to make the above comparisons. The peak drug concentrations obtained in the …
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Comparison of optical density, total cell protein, and number of viable cells (via fluorescent straining) as measures of microbial growth kinetics in suspended and biofilm cultures during biodegradation of naphthalene
Most studies on bacterial growth kinetics have been dependent on theoretical modeling with general biomass measurements using either dry weight or optical density (OD), without distinguishing live from dead bacteria or debris. As a result, there remains considerable uncertainty in reliably …
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