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 25 for “"Extracellular polymeric substances (EPS)"”.
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Role of Extracellular Polymeric Substances (EPS) on Biofilm Disinfection in a Model Drinking Water Distribution System
… systems. This study investigated the role of extracellular polymeric substances (EPS) in the biofilm life cycle, including planktonic cells, attached biofilm, detached biofilm clusters and redistributed biofilm, in a model distribution system with minimal disinfectant residuals. EPS …
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3-D Computational Investigation of Viscoelastic Biofilms using GPUs
… the materials they secrete, collectively called “extracellular polymeric substances (EPS)”. The EPS consists mostly of bio-polymers, which cross link into a network that behave viscoelastically under deformation. We propose a single-fluid multi-component phase field model of biofilms that captures …
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MODELING REORGANIZATION OF PCF10-INDUCED COMPLEX STRUCTURES IN ENTEROCOCCUS FAECALIS UNDER ERYTHROMYCIN TREATMENT
… adhered to a surface, bound together by extracellular polymeric substances (EPS). They are ubiquitous in nature and develop on a range of surfaces including living tissue. Biofilms themselves typically do not negatively affect their host, but under certain conditions they can retain …
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GENOMIC AND PHYSIOLOGICAL INSIGHTS INTO BACTERIAL HEAVY METAL RESISTANCE MECHANISMS FOR ENVIRONMENTAL DECONTAMINATION
… explore complementary aspects: (1) Analyses of extracellular polymeric substances (EPS) and biofilm formation of Serratia plymuthica strain As3-5a(5) highlight the role of tightly bound EPS in Cu removal from industrial wastewaters; (2) Genome sequencing and transcriptomic analysis of …
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Mathematical Models of Biofilm in Various Environments
… of microbial cells living in self-produced extracellular polymeric substances (EPS), which always attached to various kinds of surfaces. In this thesis, we studied several mathematical models of biofilm in the human body and marble environment. Some related background of biofilm growth and …
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Combating biofilms and antibiotic resistance using synthetic biology
… communities encased in a hydrated extracellular polymeric substances (EPS) matrix (2, 3). Biofilms are crucial in the pathogenesis of many clinically-important infections and are difficult to eradicate because they exhibit resistance to antimicrobial agents and removal by host …
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Mathematical Modelling of Mechanisms for Biofilm Expansion
… cells embedded in a sticky material composed of extracellular polymeric substances (EPS) produced by the cells themselves. The physical structure of the biofilm has been shown to be important to its evolutionary success. EPS is involved in maintaining structural integrity of the biofilm and …
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Microbial flocculation for large scale harvesting of marine microalgae for the production of biodiesel.
… principle that by stressing certain bacteria, extracellular polymeric substances (EPS) may be produced to co-flocculated the microalgae. With a dosage of 0.1 g L⁻¹ of organic carbon (acetic acid, glucose or glycerine) and a 24 h mixing time, a recovery efficiency (RE) of over 90% and a …
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Factors Influencing the Morphology of Sea Ice
… and the presence of microorganism' secretions: extracellular polymeric substances (EPS). Salinities of 10 psu, 20 psu, and 30 psu, were used at the following temperatures: -20°C, -10°C and -5°C. The temperature and salinity data showed that the growth rate of ice, increases with the decreasing …
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Do Roots Bind Soil? Comparing the Physical and Biological Role of Plant Roots in Streambank Fluvial Erosion
… root physical effects, microbial production of EPS, and root effects on the hydrodynamic boundary layer could influence streambank soil erodibility. Specifically, the goal of this research was to quantify the physical and biological effects of roots on streambank fluvial erosion. A series of …
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Anaerobic Digestion: Factors Effecting Odor Generation
… elucidating the nature and impact of the various Extracellular Polymeric Substances (EPS) fractions on odors. The results showed that odors decreased with an increase in the anaerobic digester SRT. VSR and RBA correlated with odors; however, as only one type of sludge was assessed, the conclusions …
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Investigation of effect of dynamic operational conditions on membrane fouling in a membrane enhanced biological phosphorus removal process
… time to filter (TTF) and, bound and soluble extracellular polymeric substances (EPS) were quantified, to evaluate their role on membrane fouling. The tests results suggest that the inflow variation in an MEBPR process did not make a significant difference in any of the measured parameters. …
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Development of Aerobic Granular Sludge Membrane Bioreactor (AGMBR) to Mitigate Fouling
… The main focus was on the in-depth study of extracellular polymeric substances (EPS) in AGMBR. Firstly, the long-term stability of aerobic granules (AG) was investigated in a sequencing batch reactor (SBR). This was followed by an in-depth analysis of EPS in a continuous-flow submerged AGMBR. …
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Organic influences on hydrated magnesium carbonate mineral formation
… to isolate the role of cyanobacterial extracellular polymeric substances (EPS) in mediating the mineralogy of hydrated magnesium carbonate precipitates and rate of amorphous magnesium carbonate (AMC) maturation. I also compared the precipitates that formed in association with …
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Elucidating microbial interactions, adaptations, and evolution under extreme environmental conditions in modern microbial mats from Shark Bay, Western Australia
… preserve evidence of microbial production of extracellular polymeric substances (EPS), revealing the potential importance of EPS in the protection and preservation of these ancient microbial communities. Today, extant pustular microbial mats in Shark Bay, Australia serve as one of the best …
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Characterization and Implications of Surface Hydrophobicity in Nanoparticle Fate and Transport
… greater for more hydrophobic NPs, though polymeric coatings might stabilize NPs against the attachment. The affinity of NPs for a variety of bacterial surfaces (i.e. different species, planktonic or biofilm, with or without extracellular polymeric substances (EPS)) of different …
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Mathematical Modeling of Carbon Removal in the A-Stage Activated Sludge System
… colloidal substrate, hydrolysis, production of extracellular polymeric substances (EPS) and storage of soluble biodegradable substrate. Analysis of pilot data and simulations with the dynamic computer model implied (indirectly) that storage products were probably significant in A-stage COD …
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Interaction between grazing by starfish (parvulastra exigua) and nutrient enrichment on intertidal soft-sediment communities.
… can influence the microalgal biomass (Chl a) and extracellular polymeric substances (EPS) associated with the sediment. The third aim was to investigate if the interactive effects of nutrients and starfish densities can affect functional group composition of macrofauna. The findings did not show …
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Interaction between grazing by starfish (parvulastra exigua) and nutrient enrichment on intertidal soft-sediment communities.
… can influence the microalgal biomass (Chl a) and extracellular polymeric substances (EPS) associated with the sediment. The third aim was to investigate if the interactive effects of nutrients and starfish densities can affect functional group composition of macrofauna. The findings did not show …
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Controlling the Bio-Nano Interface via Engineered Layer-by-Layer Nanoparticles for Treatment of Biofilm-Based Infections
… in antibiotics resistance. Biofilms are sessile, extracellular matrix-enclosed microbial masses that survive hostile environments. This self-produced matrix a viscous meshwork of extracellular polymeric substances (EPS) that attenuates antibiotic penetration due to its mechanical and …
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