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 53 for “"bacterial biofilms"”.
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Computational Modeling of Bacterial Biofilms
… highly time-resolved measurements of complex bacterial communities at single-cell resolution are now possible to obtain. Guided by these rich experimental data sets, we improve a recently proposed three-dimensional individual-based simulation framework to uncover governing microscopic dynamics …
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Wireless Electrostimulation to Eradicate Bacterial Biofilms
<p>Bacterial biofilms can form on medical implants and cause serious device-associated infections that are incurable by conventional antibiotics because of high-level tolerance to antimicrobials. Common strategies for controlling device-associated infections, such as coating with antimicrobials and …
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Bacterial biofilms and biomineralisation on titanium
This study investigated bacterial interactions with titanium, and evaluated the use of Serratia biomineralisation to produce a hydroxyapatite (HA) coating on titanium. Adherence of Gram-positive Staphylococcus epidermidis and Streptococcus sanguinis and Gram-negative Serratia sp. NCIMB 40259 and …
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Mathematical Modelling of Wrinkle Formation in Bacterial Biofilms
Biofilms are matrix-producing communities of bacterial cells that adhere to surfaces and adopt a multicellular lifestyle. As the predominant life-form of bacteria (estimates suggest that 99% of all bacteria exist in biofilm communities), biofilms play a crucial role in the Earth’s ecosystems, where …
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Particle tracking for understanding the properties and dynamics of bacterial biofilms
Bacterial biofilms consist of surface adherent bacteria that surround themselves with a polymer matrix which provides environmental protection and antibiotic resistance. Biofilms can grow on most implanted medical devices, on heart valves, and in the lungs of patients with cystic fibrosis, …
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Formation of Bacterial Biofilms on Spiral Wound Reverse Osmosis Whey Concentration Membranes
… In addition to the deposition of organic matter, bacterial biofilms may also act as membrane fouling agents. The present investigation was conducted to study the development of bacterial biofilms on spiral wound, reverse osmosis (RO) whey concentration membranes employing both cultural and …
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Evaluation of a Typical CIP Protocol to Control Bacterial Biofilms on Whey Reverse Osmosis Membranes
… and premature replacement of membranes. Bacterial biofilms developed on reverse osmosis membranes cause severe flux decline during whey process1ng. Our previous studies provided clear evidence of mixed species biofilms on the membranes obtained from a commercial whey processing plant. …
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Comparative Efficacy of MUS System vs Er:YAG Laser System in Reducing Bacterial Biofilms in Root Canals
… faecalis and cultured for 21 days to develop biofilms. Biofilm formation in the canals was sampled and confirmed with confocal laser microscopy. After incubation, the samples were randomly divided into four groups (n=10): Standard Needle Irrigation (SNI), MUS system, Er:YAG SWEEPS, and Er:YAG …
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The efficacy of topical agents in the treatment of bacterial biofilms: an in vivo sheep study and an in vitro study.
… Recent evidence has demonstrated the presence of bacterial biofilms on the mucosa of patients with Chronic Rhinosinusitis (CRS), suggesting their role in the pathogenesis of the condition. This thesis contains two separate studies. The studies investigated novel topical therapies by using …
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Synergistic Effects of Monoculture Biofilm Dispersion and Antibiotic Treatment
Bacterial biofilms have been identified as the causative agent of many infections, including catheter associated urinary tract infections (CAUTIs). While in a biofilm state, bacterial cells are less susceptible to antibiotic therapy. However, once released from a biofilm, antimicrobial …
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AN INTEGRATED MICROSYSTEM FOR BACTERIAL BIOFILM DETECTION AND TREATMENT
Bacterial biofilms cause severe infections in clinical fields and contamination problems in environmental facilities. Due to the unique complex structure of biofilms that comprise diverse polysaccharides and bacteria, traditional antibiotic therapies require a thousand times higher concentration …
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Ensemble modeling of [beta]-sheet proteins
… scientific questions about amyloid fibrils and bacterial biofilms.
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An Investigation of the Genetic Control of Biofilm Formation in Bacteria (E. coli K-12 MG1655)
… under various stress-induced conditions. Bacterial biofilms are structural assemblages of microbial cells that encase themselves in a protective self produced matrix and irreversibly attach to surface. Their intense resistance to antibiotic and various environmental stresses has implicated …
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Determination of low bacterial and viral concentrations in water and selective removal of pathogenic bacteria in water filtration systems
… wastewater was used to control and remove biofilms. The results showed that P. aeruginosa phages effectively controlled and removed the bacterial biofilms. A combined use of phages and chlorine inhibited P. aeruginosa biofilm formation and removed pre-existing biofilms to a greater extent. …
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Combating biofilms and antibiotic resistance using synthetic biology
Bacterial infections represent a significant source of morbidity and mortality. Biofilms and antibiotic resistance pose challenges to our future ability to treat bacterial diseases with antibiotics (1). Bacteria frequently live in biofilms, which are surface-associated communities encased in a …
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A bacterial biofilm study: from molecular regulation mechanisms in Escherichia coli to the role of biofilms in mammalian colon cancer development
… regulation of biofilm formation varies by bacterial species, and the exact regulatory pathways that control iron-dependent biofilm formation are often unknown or only partially characterized. To address this gap in our knowledge, we examined the role of iron availability in regulating …
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Biospectroscopic investigation on bacterial response to antimicrobials
… style is functioning as the microbiome, e.g., bacterial biofilms, which therefore substantially increase the difficulty regarding the investigation on microbial response to antimicrobials, or in other words, functional microbes under exposure of antimicrobials. Biospectroscopy, as an …
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Effectiveness of GentleWave CleanFlow on Multispecies Endodontic Biofilm Removal in Single Rooted Extracted Teeth
… root canal treatment is disinfection. Bacterial biofilms adhere to canal walls and invade the intricate anatomy present within root canal systems. Traditional irrigation methods are unable to deliver irrigation solutions to all parts of the canal system. The GentleWave system is an …
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Biofilm-derived Small Molecules Released from Mixed-species Cultures of Fusobacterium necrophorum and Porphyromonas levii Inhibit Bovine Neutrophil Functional Responses
Bacterial biofilms are surface adhered communities of microorganisms encased in a protective polysaccharide layer. These resilient structures present significant challenges for effective host immune cell clearance or clinical interventions, frequently resulting in recurrent infections in cattle, …
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