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 23 for “"Waterborne Pathogens"”.
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Quantification of multiple waterborne pathogens in drinking water, drainage channels, and surface waters in Kampala, Uganda over seven months of seasonal variation
… seasonal variations in water quality, waterborne disease transmission, and future implications for climate change and public health. In this study, microfluidic quantitative PCR (MFQPCR) was used to assess the presence of human enteric pathogens in protected springs, a public tap, …
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The Challenges and Opportunities in Monitoring and Modeling Waterborne Pathogens in Water- and Resource-Restricted Africa: Highlighting the critical need for multidisciplinary research and tool advancement
… can facilitate shared exposure to a community of waterborne pathogens. Despite remarkable global progress in sanitation and hygiene development in the past two decades, infectious diarrhea remains a prominent public health threat in sub-Saharan Africa. This thesis identifies and discusses …
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Methylobacterium spp.: Emerging Opportunistic Premise Plumbing Pathogens
Opportunistic premise plumbing pathogens (OPPPs) are responsible for many infections linked to drinking water. The annual cost of disease caused by these waterborne pathogens is $850 million. Key characteristics of these opportunistic waterborne pathogens include: disinfectant- resistant, biofilm …
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Inactivation of adenovirus serotype 41 with monochloramine
Waterborne pathogens remain a top concern in drinking water safety. Nealy 1,000 children die worldwide each day because of preventable diseases caused by a lack of safe water and sanitation. Human Adenovirus (HAdV) is a viral pathogen that persists in contaminated water and is commonly found to …
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Three-Dimensional Passivated-Electrode Insulator-Based Dielectrophoresis (3D-PiDEP)
The focus of this research is the isolation of waterborne pathogens which are one of the grand challenges to human health, costing the lives of about 2.5 million people worldwide each year. The aim was to develop new microfluidic techniques for selectively concentrating and detecting waterborne …
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THE ASSESSMENT OF THE QUALITY OF WATER RESOURCES IN NORTHERN THAILAND: TOWARDS SAFE DRINKING-WATER ACCESS FOR VULNERABLE POPULATIONS
… i.e. E. coli, Enterococcus, nitrate; (ii) waterborne pathogens i.e. Giardia and Cryptosporidium and (iii) fluoride. These parameters were critically analysed and discussed in terms of their prevalence, origins and the modes in which they are transported into the drinking-water resources. …
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Understanding the effect of intermittent water supply on drinking water quality
… that are likely sources of opportunistic waterborne pathogens and can cause disease outbreaks. Flushing of the water pipes and re-pressurization, which occur at the start of each IWS supply cycle, cause the erosion of the biofilm and its transport into the bulk water, which can potentially …
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A global sensitivity analysis of solar virus inactivation modeling
Waterborne pathogens related to the lack of safe drinking water and surface water contamination pose a substantial threat to human health. Sunlight-mediated inactivation of waterborne pathogens has been widely studied in natural surface waters, and it has been leveraged as a low-cost approach to …
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Forecasting Chlorine Residual for Water Safety Using Artificial Neural Networks Ensembles in Humanitarian Water Systems
Waterborne illnesses are a leading health concern in refugee and internally displaced person (IDP) settlements where waterborne pathogens often spread through household recontamination of stored water. Ensuring sufficient chlorine residual is important for protecting drinking water against …
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UV light inactivation of adenovirus, coxsackievirus and murine norovirus
… (MP) UV light irradiation to inactivate waterborne pathogens that are an increasing concern in drinking water. The inactivation of pathogens depends directly on the total UV dose or fluence (UV intensity multiplied by contact time) received by the microorganism. UV light irradiation is a …
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Insulator-based Dielectrophoresis for Bacterial Characterization and Trapping
… of microparticles with particular emphasis on waterborne pathogens which pose a great health risk to human lives. The goal of this study was to develop microfluidic systems for enhanced characterization and isolation of bioparticles. Insulator-based dielectrophoresis (iDEP) is a promising …
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Effects of Freshwater Salinization and Associated Base Cations on Bacterial Ecology and Water Quality
… indicators of human health risk from exposure to waterborne pathogens. Thus, to understand how salt pollution affects freshwater ecosystems, there is a critical need to understand how freshwater salinization is impacting bacterial ecology. Using a series of controlled mesocosm experiments, my …
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A Comparative Study of Synergistic Effects in Sequential Inactivation of Cryptosporidium Parvum Oocysts and Bacillus Subtilis Spores With Chemical Disinfectants
… only C. parvum oocysts, but also other emerging waterborne pathogens.
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Bacteriophage PRD1 as a potential surrogate for adenovirus in drinking water disinfection with free chlorine, low pressure ultraviolet light, and sunlight
Waterborne pathogens are increasingly a worldwide concern in drinking water because of their ability to cause high levels of morbidity and mortality. Especially in developing regions, a lack of access to safe drinking water, adequate sanitation, and resources to implement water treatment processes …
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Pathogen Removal by Secondary and Advanced Water Reclamation for Water Reuse
… there is uncertainty regarding the reduction of waterborne pathogens. Common pathogen log reduction requirements have been modeled after California Department of Drinking Water's 12-10-10 log reduction value (LRV) for enteric virus, Cryptosporidium and Giardia, respectively, based on raw …
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Comparative study of the kinetics and mechanisms of adenovirus and bacteriophage PR772 inactivation by disinfectants used for global safe drinking water
… population consuming fecally contaminated water, waterborne pathogens can have a significant impact on public health. Human adenovirus (HAdV), is found globally in water sources and can cause a variety of illnesses including gastroenteritis, respiratory disease, and conjunctivitis. HAdV is of …
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Interactive effects of temperature, nutrient level and sandprawns (Kraussillichirus kraussi) ecosystem engineering on microplankton community structure
… by K. kraussi thus reduced abundance of many waterborne pathogens (E. coli., Enterobacter spp.), but other taxa became more abundant with increasing sandprawn density. Common sandprawns and their habitats should be conserved to assist in averting the proliferation of some waterborne pathogenic …
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Investigation of Bromate Formation during Ozone-Biofiltration Treatment Processes for Potable Reuse Application
… steps to provide effective inactivation of pathogens as well as organic and inorganic contaminants. Though conventional potable reuse treatment trains employ reverse osmosis (RO) as the main purification barrier, concentrate disposal, challenging requirements for influent water quality such …
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Evaluation of Escherichia coli O157:H7 and Salmonella enterica inactivation in water by several treatment technologies
… treatment methods and their effects on waterborne pathogens Escherichia coli O157:H7 and Salmonella enterica are evaluated. The effect of wintergreen essential oil derived from Gaultheria procumbens was analyzed against E. coli and S. enterica in concentrations of 5 μL/1.5 mL, 2.5 μL/1.5 …
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Influence of natural and anthropogenic factors on Water, Sanitation, and Hygiene (WaSH)
… water microbiome and human exposure to water pathogens. Furthermore, programs like WaSH intervention targeted to change the hygiene behavior of individuals, potentially change the water microbiome but the current knowledge is not adequate to validate it. Thus, the overarching goal of this …
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