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 39 for “"Biocide"”.
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Understanding Bacterial Resistance and Dissemination: The Impact of Biocide Priming
… use of biocidal products. Uncontrolled use of biocides, especially at sub-inhibitory concentrations has led to growing concerns that their selective pressure may favour the prevalence of less susceptible bacterial strains and encourage the expression and dissemination of antibiotic resistance …
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Antibiotic and biocide resistance in Salmonella enterica and Escherichia coli 0157
Bacterial resistance to antibiotics and biocides is a prevalent problem, which may be exacerbated by the commonplace and often unnecessary inclusion of biocides into domestic products. Addition of antimicrobials, to domestic disinfectants has raised concern about promoting microbial resistance and …
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Preliminary Development of The Dialysis-Membrane-based Passive Biocide Delivery System for Spacecraft Water Recovery Units
… are interested in adopting silver ions as a biocide in future spacecraft water recovery processes since silver ions are effective biocide at concentrations that humans can safely consume. The system has been designed following the configuration of the Water Processor Assembly (WPA) aboard the …
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Controlled release of Isothiazoline biocides from industrial minerals
… morphologies can be used to adsorb isothiazoline biocides for controlled-release and antimicrobial purposes. The absorption of the biocides on the mineral powders was achieved by way of using a bench high shear mill (dry process), or combining them to hydrated minerals (wet process). The …
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Studies on T-OMP and the development of antimicrobial tolerance in <i>Pseudomonas aeruginosa</i> PAO1
… in tolerance to increasing concentrations of biocide upon exposure of <i>P. aeruginosa</i> to Kathon™, a commercial biocide containing 1.15% v/v 5-chloro-N-methylisothiazolone (CMIT) and 0.35% v/v N-methylisothiazolone (MIT). This adaptation was associated with the concurrent disappearance of …
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Using fungicides or combinations of fungicides to provide mold and decay fungal protection to OSB
… of strandboard directly were related with the biocide type and its concentration. Greater protection of the strandboard was achieved with an increase in preservative retention levels. However, due to the relatively high cost of non-metallic (organic) preservatives, it is important to find the …
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Studies on the development of antimicrobial tolerance in monospecies and binary biofilms
… possibility of cross-resistance between these biocides. This was followed by observation of the action of BIT in binary biofilms and subsequent susceptibility of component species this biocide. Monoculture of <i>Ps. aeruginosa</i> PAOl biofilms grown on the Sorbarod filters were passaged in the …
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A study of a cyanobacterial bloom in the Albert Dock in Preston, Lancashire, UK
… were applied to assess the efficacy of a biocide preparation. A consensus of re-growth and viability experiments of biocide treated samples show that the concentration at which the stabilised biocide inhibited the growth of Planktothrix (Osdilatoria) agardhi4 was in the range of 50-100 …
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Control of Biodeterioration of Sandstone on the Fisher Fine Arts Library
… biocolonization through the application of biocides. The presence of biocolonization is not only an aesthetic issue, but one of deterioration, because microorganisms can alter the material both physically and chemically making it more susceptible to other deterioration mechanisms. The study …
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Organosilicon compounds as potential wood protecting agents
… expense of the other parameter. Addition of a biocide improved fungal resistance, but increased the ecotoxicological risk of the leachates of the treated wood. Organosilicons are known as water repellents and are assumed to interfere in the wood-water relationship. Whatever laboratory test …
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The fate of organotin biocides in marine antifouling elastomers.
… changes undergone by a series of triorganotin biocides when dispersed in neoprene-based marine antifouling elastomers. Chemical speciation using tin-119 nuclear magnetic resonance spectroscopy and gas chromatography, indicate that the majority of the tri-n-butyltin (TBT) biocides are converted …
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Chemical and physical effects of interaction between oilfield chemicals and formation rocks and integration with sand failure prediction models.
… been used extensively as inhibitor, surfactant, biocide, stabilizer, depressant, retarder, scavenger, defoamer, demulsifier, stimulant, and so on. However, the weakening effect that the chemical/formation interaction may have on the grain fabrics has not yet been given due attention as part of …
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Biological knowledge as a tool for an ecologically sound biofouling control: a case study of the invasive bivalve Mytilopsis leucophaeata in Europe
… systemen is het gebruik van chlorering als biocide (IPPC, 2000), maar het onderzoek naar andere, meer specifieke en omgevingsvriendelijke controlemaatregelen is volop bezig. De brakwatermossel Mytilopsis leucophaeata (Conrad, 1831) veroorzaakt biofouling problemen in de koelwatersystemen van …
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Studies on the mechanism of zinc pyrithione resistance in Pseudomonas aeruginosa PAO1
… selected antimicrobial agents (Isothiazolone biocides). These passages in sub-minimal inhibitory concentrations (sub-MIC) of antimicrobial agents also exhibited corresponding shifts in outer membrane protein profiles. The aim of this project was to elucidate whether or not such adaptive …
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Development and evaluation of anti-biofouling nano-composite coatings
… this study, a range of novel Ni–P–PTFE-biocide polymer nanocomposite coatings and modified DLC coatings with B, F, N, Si and Ti were designed and produced using electroless plating, magnetron sputter ion-plating and plasma enhanced chemical vapour deposition techniques. The surface …
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The colonisation of treated water systems by <i>Legionella pneumophila</i>
… determine efficiency of commercially available biocides. The results demonstrated that attached bacterial populations were more resistant to biocide treatment than the planktonic phase. However, even the planktonic populations were able to survive the recommended biocide doses suggested by the …
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The integration of an avirulent legionella pneumophilla into aquatic biofilms
… serogroup 1 to a commercially available biocide, Vantocil IB, was investigated. Both the serogroup 6 and the avirulent serogroup 1 could not be detected following biocide teatment in either the planktonic phase or biofilms. These results suggest that this avirulent L. pneumophila is a …
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Application of hydrogen peroxide as brown tide bloom control agent
… and explores the potential of natural chemical biocide hydrogen peroxide (H_2O_2) as a reagent to serve the purpose. Studies on laboratory cultures were carried out in order to determine the effectiveness of H_2O_2 at eradicating A. anophagefferens. Then, the safety (to non-target organisms) and …
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Next generation of electrospun textiles for chemical and biological protection and air filtration
… from electrospinning of blends containing a biocide chlorhexidine (CHX). A small amount of high molecular weight poly(ethylene oxide) was incorporated into the blends to facilitate the electrospinning and a dimensionless Deborah number (De) was introduced to determine the spinnability of the …
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Evaluation of innovative decentralized sanitation technologies in Ghana
… if a reuse for waste and safe disposal of biocide can be established. Other technologies require further development before they can be recommended for implementation and use.
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