1. Disinfection of wastewater using porous Fe2O3 thin film : master's thesisRanin M. D. Ismail, 2024, master's thesis Abstract: The contamination of water bodies by microorganisms is seen as a highly significant issue that poses a threat to human and animal well-being. The primary objective of this master thesis is to develop and evaluate an environmentally friendly photoelectrochemical (PEC) method using porous Fe₂O₃ thin films for the disinfection of wastewater. This thesis presents the novel application of porous Fe₂O₃ thin films, which were produced using a cost-effective spin-coating technique, to improve the process of PEC disinfection. The PEC approach has been demonstrated to be highly effective in disinfection of wastewaters deliberately contaminated with E. coli bacteria. The crystallinity of the Fe₂O₃ porous thin films was confirmed using X-ray diffraction (XRD), while the film morphology was studied using scanning electron microscopy (SEM). The PEC disinfection procedures were conducted in the presence of two separate electrolytes, sodium sulfite (Na₂SO₃) and sodium chloride (NaCl), which were chosen for their specific roles in improving the effectiveness of disinfection. The PEC method shown efficacy in inactivating E. coli, with 45% of the bacteria being inactivated in the presence of 2 mM Na₂SO₃ and complete inactivation achieved with 20 mM NaCl. The findings suggest that the PEC disinfection process is a highly efficient and eco-friendly technology that can be used as a practical substitute for traditional disinfection methods. As a result, it has potential applications in ensuring public safety and safeguarding the environment, particularly in relation to wastewater treatment.
Keywords: Treated wastewater, Disinfection, Escherichia coli, Photoelectrochemical oxidation, Fe2O3 thin films, Sodium sulfite and Sodium chloride.
Published in RUNG: 09.09.2024; Views: 323; Downloads: 8
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2. Crystal structure of human PCNA in complex with three p15 peptidesMatteo De March, N. Merino, A. Gonzalez-Magana, M. Romano-Moreno, S. Onesti, Francisco J. Blanco-Silva, A. De Biasio, 2018, complete scientific database of research data Keywords: crystal structure, Homo sapiens, Escherichia coli
Published in RUNG: 17.03.2021; Views: 3196; Downloads: 10
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3. Structural basis of human clamp sliding on DNAMatteo De March, N. Merino, S. Barrera-Vilarmau, R. Crehuet, S. Onesti, Francisco J. Blanco-Silva, A. De Biasio, 2018, complete scientific database of research data Keywords: DNA binding protein, Homo sapiens, synthetic constructs, Escherichia coli
Published in RUNG: 17.03.2021; Views: 3172; Downloads: 11
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4. Modulation of PCNA sliding surface by p15PAF suggests a suppressive mechanism for cisplatin-induced DNA lesion bypass by pol eta holoenzymeMatteo De March, S. Barrera-Vilarmau, E. Mentegari, N. Merino, E. Bressan, G. Maga, R. Crehuet, S. Onesti, Francisco J. Blanco-Silva, A. De Biasio, 2012, complete scientific database of research data Keywords: DNA binding protein, Homo sapiens, Escherichia coli
Published in RUNG: 17.03.2021; Views: 2672; Downloads: 10
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8. Molecules involved in motility regulation in Escherichia coli cells: a reviewFazlurrahman Khan, Nazia Tabassum, Dung Pham, Sandra Oloketuyi, Young-Mog Kim, 2020, original scientific article Abstract: The initial colonization of the host organism by commensal, probiotic, and pathogenic Escherichia coli strains is an important step in the development of infections and biofilms. Sensing and colonization of host cell surfaces are governed by flagellar and fimbriae/pili appendages, respectively. Biofilm formation confers great advantages on pathogenic E. coli cells such as protection against the host immune system, antimicrobial agents, and several environmental stress factors. The transition from planktonic to sessile physiological states involves several signaling cascades and factors responsible for the regulation of flagellar motility in E. coli cells. These regulatory factors have thus become important targets to control pathogenicity. Hence, attenuation of flagellar motility is considered a potential therapy against pathogenic E. coli. The present review describes signaling pathways and proteins involved in direct or indirect regulation of flagellar motility. Furthermore, application strategies for antimotility natural or synthetic compounds are discussed also.
Keywords: Biofilm formation, Escherichia coli, inhibition, motility, pathogenesis
Published in RUNG: 14.01.2021; Views: 4558; Downloads: 0
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9. Strategies of biofilm inhibition and virulence attenuation of food borne pathogen-Escherichia coli O157:H7Sandra Oloketuyi, Fazlurrahman Khan, 2017, review article Abstract: Enterohemorrhagic Escherichia coli (E. coli) O157:H7, a gram-negative bacteria identified as a foodborne pathogen causing severe disease is of great concern worldwide. The pathogenicity of E. coli O157:H7 is due to the presence of some virulence factors and its ability to form biofilm which resist antimicrobial compounds, withstand harsh environmental condition and protects from the host immune responses. Formation of biofilm is a multistep process such as adhesion, cellular aggregation and productions of extracellular matrix in which colonies are embedded. There are high numbers of research in the discovery of natural and synthetic compounds which can attenuate the E. coli O157:H7 biofilm formation as well as suppress virulence-related genes. The present review article focuses on the steps involved in E. coli O157:H7 biofilm formation, factors associated with virulence and attenuation.
Keywords: Escherichia coli, pathogen, virulence
Published in RUNG: 14.01.2021; Views: 2938; Downloads: 0
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