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 8 of 8 for “"bacterial recovery"”.
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Development of a water sample concentrator for the concentration of bacteria in drinking water
… a membrane adsorption/elutriation procedure for bacterial recovery was developed and field-tested. Influent sample volumes of 19.0 liters were processed by the concentrator within 10 minutes. Standard MPN and membrane filtration tests were conducted to determine the efficiency of the …
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Discovery and Characterization of a Novel Regulatory Small RNA, VcrS, Required for Virulence in Brucella abortus
… studies demonstrated significantly decreased bacterial recovery of ΔvcrS compared to the wildtype strain. Quantitative proteomics revealed that one protein, BAB1_1454, is 30-fold over-produced in ΔvcrS compared to wildtype. This essential protein encodes MurF, which catalyzes the final …
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Spatial and Temporal Immune Response in House Flies in Response to Ingestion of Bacillus Cereus and Eschericha Coli 0157-H7
… E. coli 157:H7 or B. cereus and then bacterial fate and localization of fly defensive responses were analyzed at various hours post-ingestion (h PI). Bacterial fate was assessed qualitatively by localizing bacteria via microscopy and quantitatively by culturing whole fly homogenate. …
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Evaluation of Two Neonatal Challenge Models for Broiler Chickens and their Effects on Early Performance Parameters
… of transmission was evaluated via enteric bacterial recovery, body weight gain (BWG), and mortality. For Exp 1 and Exp 2, significantly (P<0.0001) more Gram-negative bacteria were recovered from the seeder and contact gastrointestinal samples compared to the negative control samples on …
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Fluorescent Microspheres as Surrogates for <i>Salmonella enterica</i> serotype Typhimurium in Recovery Studies from Stainless Steel
… combination of both from stainless steel, three recovery methods, including a standard rinse, a one-ply composite tissue (Kimwipe®) or a sonicating brush were used. Findings were used to assess the effectiveness of fluorescent microspheres as surrogates for <i>S.</i> Typhimurium. For each method, …
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Quantitative Evaluation of Recovery Methods for Listeria monocytogenes Applied to Stainless Steel
… was to compare several methods for quantitative recovery of Listeria monocytogenes from stainless steel surfaces. A cocktail of four serotypes of Listeria monocytogenes (Scott A (4b)), 1/2b, 3b, and 4b) were mixed in equivalent concentrations and inoculated onto type 304 stainless steel coupons …
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Efficacy and impact of sanitizers in controlling pathogenic bacteria on irrigation water
… NTU), contact times (CT: 3 or 5 minutes), and bacterial concentrations of EHEC, SM, or LM at 6 and 3 log CFU/mL per EPA 2020 guidelines. Treatments that achieved a 3-log reduction of the selected organisms within a 5-minute contact time, with no viable cells after enrichment, were considered …
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Efficacy of the Microtally® Mitt for sampling of beef carcasses
… 1) and compare the MT-Mitt's effectiveness in bacterial recovery with that of carcass surface excision sampling (Study 2). The objective of Phase 2 was to compare the detection of pathogen index targets from carcass surface MT-Mitt samples with those from trim surface MT-Mitt samples from the …