The objective of these studies is to describe and characterize the reactions involved in the reduction and precipitation of heavy metal ions by both a mixed culture of sulfate-reducing bacteria (SRB), as well as a pure culture of Desulfovibrio desulfuricans (ATCC 7757). The enzymatic reduction of soluble hexavalent U(VI) to insoluble tetravalent U(IV) by Desulfovibrio desulfuricans has been rep...

OBJECTIVE Patients presenting with suspected urinary tract infection are common in every day emergency practice. Urine flow cytometry has replaced microscopic urine evaluation in many emergency departments, but interpretation of the results remains challenging. The aim of this study was to develop and validate tools that predict urine culture growth out of urine flow cytometry parameter. METH...

In a mixed continuous culture of Pseudomonas putida VM15A and Pseudomonas sp. strain VM15C with polyvinyl alcohol (PVA) as the sole source of carbon, growth of the PVA-degrading bacterium VM15C and, hence, PVA degradation were limited by the growth factor, pyrroloquinoline quinone, produced by VM15A. Feeding of a carbon source for VM15A, ethanol, with PVA enhanced pyrroloquinoline quinone produ...

A mixed microbial culture was adapted to growth on parathion to determine the feasibility of using microorganisms to detoxify concentrated parathion in agricultural wastes. In a 600-ml chemostat, the culture was able to degrade 50 mg of parathion per liter per h. Para-nitrophenol, produced by enzymatic hydrolysis of parathion, caused delays in exponential growth which were directly proportional...

The performance of the Capilia TB-Neo assay, a new-generation assay, was assessed by determining its sensitivity, specificity, reproducibility, and cross-reaction with contaminating organisms. The sensitivity and specificity were 99.2 and 96.4% and 89.3 and 100% in pure and mixed-culture isolates, respectively. The kappa statistic was 95.0 and 77.9% in pure and mixed culture isolates, respectiv...

the main problems in mixed culture are using the agricultural machines for plant two or more crop simultaneously. in the present study to remove difficulties of using agriculture machinery in planting operation for corn and bean simultaneously, a planter was designed and developed to direct planting of two different types of seeds having different shapes and sizes with precise proportion and di...

A thermophilic mixed population of bacteria, capable of utilizing methanol as its sole carbon-energy source at temperatures up to 65 C, was selected by enrichment and studied. A maximal cellular yield of 0.42 g per g of methanol was observed at 50 to 56 C. The maximal specific growth rate of the mixed population in continuous culture at 56 C was greater than 0.32 per h. The amino acid profile o...

Title of Document: Bacterial Cross Talk in Mixed Culture Christina Kenny Giblin Directed by: Dr William Bentley, Professor Department of Bioengineering Quorum sensing is the term used to describe signaling pathways used by bacteria for intra and interspecies communication. Autoinducer 2 (AI2) is one signal molecule known to be involved in quorum sensing that stands out because it appears to be ...