Improving The Microbial Source Tracking Toolbox : Evaluating The Use Of Selective Enrichments And Artificial Sweeteners In A Multi-Tiered Approach,
2014
University at Albany, State University of New York
Improving The Microbial Source Tracking Toolbox : Evaluating The Use Of Selective Enrichments And Artificial Sweeteners In A Multi-Tiered Approach, Stacey A. Helming
Legacy Theses & Dissertations (2009 - 2024)
Microbial contamination of surface waters is a public health concern world-wide, with non-point source fecal input contributing to millions of cases of waterborne illness annually. Numerous techniques have been proposed to monitor for non-point source fecal contamination, but few studies have explored the correlation of multiple chemical and microbial fecal source tracking markers in ambient waters. Therefore, the purpose of these studies was to evaluate the use of multiple "ideal" markers of fecal contamination and improve upon any analytical techniques required to identify species-specific fecal contamination in surface waters. The use of selective enrichments to improve the sensitivity of end-point …
Symbiotic Associations Between Vibrio Cholerae And Copepods And Their Potential Public Health Impact,
2014
University at Albany, State University of New York
Symbiotic Associations Between Vibrio Cholerae And Copepods And Their Potential Public Health Impact, Gretchen Boria Pérez
Legacy Theses & Dissertations (2009 - 2024)
Vibrio cholerae O1 concentrate in copepods by attaching to their chitinous exoskeleton and gut, making these planktonic crustaceans participants in the spread of cholera in marine and estuarine environments. The role of the symbiosis in the spread of gastrointestinal disease caused by non-O1 serotypes has not been well-studied in fresh water systems. The goal of these studies was to determine whether symbiotic association of V. cholerae with copepods affects virulence of hemolysin/cytolysin toxin, suspected in V. cholerae non-O1 related morbidity. The reverse-transcription-polymerase chain reaction was used to evaluate the relative transcriptional response of hlyA, encoding hemolysin, by a non-O1 strain …
Perfluorinated Compounds, Thyroid Function, And Neuropsychological Status In Older Residents Of Upper Hudson River Communities,
2014
University at Albany, State University of New York
Perfluorinated Compounds, Thyroid Function, And Neuropsychological Status In Older Residents Of Upper Hudson River Communities, Srishti Shrestha
Legacy Theses & Dissertations (2009 - 2024)
Perfluorinated compounds (PFCs) are widespread in the environment. Minimal data exist regarding the neurotoxicity and thyroid disruptive property of PFCs in aging populations and the possible mediating effects of thyroid hormones (THs). In this study, we assessed associations among PFCs, thyroid function, and neuropsychological status, and determined if the neurotoxic effects of PFCs are mediated by changes in THs in an aging population. We measured perfluorooctanoic acid (PFOA), perfluorooctane sulfonate (PFOS), thyroid stimulating hormone (TSH), total thyroxine (T4), free T4 (fT4), and total triiodothyronine (T3) in serum and performed neuropsychological tests in men and women aged 55-74 years and living …
Exposure Assessment And Risk Management Of Engineered Nanoparticles : Investigation In Semiconductor Wafer Processing,
2014
University at Albany, State University of New York
Exposure Assessment And Risk Management Of Engineered Nanoparticles : Investigation In Semiconductor Wafer Processing, Michele Shepard
Legacy Theses & Dissertations (2009 - 2024)
Engineered nanomaterials (ENMs) are currently used in hundreds of commercial products and industrial processes, with more applications being investigated. Nanomaterials have unique properties that differ from bulk materials. While these properties may enable technological advancements, the potential risks of ENMs to people and the environment are not yet fully understood. Certain low solubility nanoparticles are more toxic than their bulk material, such that existing occupational exposure limits may not be sufficiently protective for workers. Risk assessments are currently challenging due to gaps in data on the numerous emerging materials and applications as well as method uncertainties and limitations.
Runner Identity And Sponsorship: Evaluating The Rock ‘N’ Roll Marathon,
2014
University of Nevada, Las Vegas
Runner Identity And Sponsorship: Evaluating The Rock ‘N’ Roll Marathon, Nancy L. Lough, Jennifer Pharr, Jason O. Owen
Environmental & Global Health Faculty Research
The economic value of participation sport has been reported to eclipse spectator sport significantly. However, scholars have acknowledged the relative lack of research on this important segment of the sport market. The purpose of this study was to analyze the relationship between runner identity and race sponsor effectiveness. Surveys were sent to participants in the Las Vegas Rock ‘n’ Roll Marathon. The survey was constructed to measure runner identity, and sponsor effectiveness as interpreted through rates of recognition, recall and purchase intention. Runners were divided into three groups based on their runner identity score. Of the predictive variables, only runner …
The Environmental, Social, And Economic Impacts Of Hydraulic Fracturing, Horizontal Drilling, And Acidization In California,
2014
Claremont McKenna College
The Environmental, Social, And Economic Impacts Of Hydraulic Fracturing, Horizontal Drilling, And Acidization In California, Christina Whalen
CMC Senior Theses
The oil extraction mechanisms of hydraulic fracturing, horizontal drilling, and acidization have recently spread throughout the state of California. This thesis explores and assesses whether federal and state legislation should approve of fracking operations in California after studying its effects on human health, the environment, and the economy. This thesis assesses the impacts of fracking; analyzes the role of current legislation and regulation; compares California fracking to fracking in other states and countries; and provides recommendations for future action.
Effects Of Nanosilver And Silver Nitrate Exposure On Fathead Minnows (Pimephales Promelas) And Zebrafish (Danio Rerio),
2014
University of Mississippi
Effects Of Nanosilver And Silver Nitrate Exposure On Fathead Minnows (Pimephales Promelas) And Zebrafish (Danio Rerio), Adam D. Hawkins
Electronic Theses and Dissertations
Silver nanoparticles (AgNPs) due to their unique antimicrobial properties are among the most widely utilized nanoparticle. Because of the nature of the products that utilize AgNPs, environmental release of AgNPs is inevitable. At greatest risk is the aquatic ecosystem due to known toxicity of the Ag + ion to aquatic organisms. Our goal was to use two fish models, fathead minnows (Pimephales promelas; FHMs) and zebrafish ( Danio rerio; ZFs), to study the effects of AgNPs on gill histopathology, Na+/K+-ATPase immunoreactivity, mucus production, bioaccumulation, particle uptake characterization, gill gene expression, and lethality in varying water parameters in comparison to the …
The Role Of Surface Chemistry In The Toxicity Of Manufactured Cerium Dioxide Nanomaterials To Caenorhabditis Elegans,
2014
University of Kentucky
The Role Of Surface Chemistry In The Toxicity Of Manufactured Cerium Dioxide Nanomaterials To Caenorhabditis Elegans, Emily Kay Oostveen
Theses and Dissertations--Plant and Soil Sciences
Manufactured CeO2 nanomaterials (CeO2-MNMs) are used for a wide variety of applications including diesel fuel additives and chemical/mechanical planarization media. To test the effects of CeO2-MNM surface coating charge on to model organism Caenorhabditis elegans, we synthesized 4 nm CeO2 with cationic (DEAE-), anionic (CM-), and neutral (DEX) coatings. In L3 nematodes exposed for 24 hours, DEAE-CeO2 induced lethality at lower concentrations than CM- or DEX-CeO2. Feeding slightly decreased CeO2 toxicity, regardless of coating. In L2 nematodes exposed for 48 hours with feeding, DEAE-CeO2 caused lethality at the …
Addressing Public Health Risks Of Persistent Pollutants Through Nutritional Modulation And Biomimetic Nanocomposite Remediation Platforms,
2014
University of Kentucky
Addressing Public Health Risks Of Persistent Pollutants Through Nutritional Modulation And Biomimetic Nanocomposite Remediation Platforms, Bradley J. Newsome
Theses and Dissertations--Chemistry
Due to their relative chemical stability and ubiquity in the environment, chlorinated organic contaminants such as polychlorinated biphenyls (PCBs) pose significant health risks and enduring remediation challenges. Engineered nanoparticles (NPs) provide a novel platform for sensing/remediation of these toxicants, in addition to the growing use of NPs in many industrial and biomedical applications, but there remains concern for their potential long-term health effects. Research highlighted herein also represents a transdisciplinary approach to address human health challenges associated with exposure to PCBs and NPs. The objectives of this dissertation research are two-fold, 1) to develop effective methods for capture/sensing and remediation …
Federal V. State Effectiveness: An Analysis Of The Endangered Species Act And Current Potential Attempts At Reform,
2014
Pepperdine University
Federal V. State Effectiveness: An Analysis Of The Endangered Species Act And Current Potential Attempts At Reform, Nicholas Primo
Pepperdine Policy Review
In November 2013, several Congressional leaders drafted a new bill to reform the Endangered Species Act of 1973 (ESA). While the Endangered Species Management Self-Determination Act (ESMSDA) was the first major attempt at updating the crucial U.S. environmental policy in decades, it also inflamed environmentalist defenders of the original bill. More importantly, it raised several questions as to whether state or federal-oriented approaches to endangered species protection and environmental policy more broadly is ultimately more effective. This article analyzes the original 1973 ESA, followed by an analysis of the ESMSDA currently being considered. It will discuss the various strengths and …
The Performance Of Simple Artificial Floating Wetland Communities And Their Effects On Aquatic Nutrient Levels And Algal Abundance,
2014
University of North Florida
The Performance Of Simple Artificial Floating Wetland Communities And Their Effects On Aquatic Nutrient Levels And Algal Abundance, Bradley L. Sleeth
UNF Graduate Theses and Dissertations
Harmful algal blooms are exponential increases in autotrophic microorganisms that proliferate in such a way that the surrounding environment, the local economy and the health of regional populations are negatively affected. Among the causes of these blooms are anthropogenic inputs of excess nitrogen and phosphorus into the environment through overfertilization. Floating treatment wetlands (FTW) have emerged as a novel method of reducing the negative impacts of these nutrient inputs by using artificial rafts to float normally emergent wetland plants on the surface of water bodies to assimilate excess nutrients. Because their use is so new, only limited research has been …
Message Matters: Application Of The Theory Of Planned Behavior To Increase Household Hazardous Waste Program Participation,
2014
Antioch University of New England
Message Matters: Application Of The Theory Of Planned Behavior To Increase Household Hazardous Waste Program Participation, Amy Dyer Cabaniss
Antioch University Dissertations & Theses
Removing household hazardous waste (HHW) from the municipal solid waste stream is important to protect health, safety and the environment. Communities across the U.S. separate HHW from regular trash for disposal with hazardous waste, however nationally, participation rates are low with only five to ten percent of households estimated to participate in any given collection. This two-part study used the Theory of Planned Behavior (TPB) to understand individuals’ beliefs and attitudes toward HHW collections, and to develop a print message intervention to increase participation. In Study 1, respondents (N = 983) completed a survey administered to homeowners in the Connecticut …
Effect Of Nonthermal Plasma On Quality Of Fresh Produce,
2014
Technological University Dublin
Effect Of Nonthermal Plasma On Quality Of Fresh Produce, Nrusimhanath Misra
Doctoral
No abstract provided.
Valorisation Of The Cider And Brewing Industry By-Products As Nutraceutical Ingredients,
2014
Technological University Dublin
Valorisation Of The Cider And Brewing Industry By-Products As Nutraceutical Ingredients, Sofia Reis
Doctoral
By-products from the cider and brewing industries, including apple pomace (AP) and brewer’s spent grain (BSG) respectively, constitute major environmental problems due to the large quantities produced every year. They are sources of valuable compounds such as protein, fibre, essential fatty acids, phenolic compounds and minerals, some of them with antioxidant and prebiotic properties. Their high nutritional value leads to their potential use as human food products and several applications have been considered recently. The aims of this work include i) the nutritional and compositional characterisation of AP, BSG and final extruded and baked prototypes containing these by-products and ii) …
The Imperative Of Conserving California's Foothill Oak Woodlands,
2013
California Polytechnic State University - San Luis Obispo
The Imperative Of Conserving California's Foothill Oak Woodlands, Lauren Phillips
Social Sciences
No abstract provided.
The Eps Matrix As An Adaptive Bastion For Biofilms: Introduction To Special Issue,
2013
University of South Carolina - Columbia
The Eps Matrix As An Adaptive Bastion For Biofilms: Introduction To Special Issue, Alan W. Decho
Faculty Publications
No abstract provided.
Wash Education: Need For More Than Water Treatment For Floating Villages In Cambodia,
2013
Bridgewater State University
Wash Education: Need For More Than Water Treatment For Floating Villages In Cambodia, Kevin Curry
2013 New England Association for Asian Studies Conference
Point of use (POU) water treatment systems are widely used around the world to provide microbiologically safe drinking water in developing countries. Work done in Cambodia by Brown et al. (2007) and Liang et al. (2010) have documented ceramic and biosand filters as cost effective point of use treatment systems capable of removing over 95% E. coli bacteria when properly used and maintained. Bridgewater State University and Water for Cambodia (WfC) explored using BioSand filters (BSF) to provide microbiologically safe drinking water for people in the Moat Khla floating village on the Tonle Sap Lake in Siem Reap Province. All …
Accommodations For Patients With Disabilities In Primary Care: A Mixed Methods Study Of Practice Administrators,
2013
University of Nevada, Las Vegas
Accommodations For Patients With Disabilities In Primary Care: A Mixed Methods Study Of Practice Administrators, Jennifer Renee Pharr
Environmental & Global Health Faculty Research
Structural barriers that limit access to health care services for people with disabilities have been identified through qualitative studies; however, little is known about how patients with disabilities are accommodated in the clinical setting when a structural barrier is encountered. The purpose of this study was to identify how primary care medical practices in the United States accommodated people with disabilities when a barrier to service is encountered. Primary care practice administrators from the medical management organization were identified through the organization’s website. Sixty-three administrators from across the US participated in this study. Practice administrators reported that patients were examined …
West Coast Rock Lobster Fishery Ecological Risk Assessment 20 February 2013,
2013
Department of Primary Industries and Regional Development, Western Australia
West Coast Rock Lobster Fishery Ecological Risk Assessment 20 February 2013, Department Of Fisheries
Fisheries Occasional Publications
No abstract provided.
Defining The Requirements For Early Gene Expression In Bacteriophage Hk639,
2013
Western Kentucky University
Defining The Requirements For Early Gene Expression In Bacteriophage Hk639, Amanda L. Seaton
Masters Theses & Specialist Projects
Lambdoid phages suppress transcription termination to fully express their genes. Antitermination of early gene expression in most lambdoid phages is mediated by an interaction between the N protein and a number of host-encoded factors. Bacteriophage HK022 does not rely on a protein for antitermination. To promote full expression of early phage genes, the transcripts of the HK022 put sites interact directly with RNA polymerase to convert it to a termination resistant form. Bacteriophage HK639 also uses RNA-mediated antitermination. However, it only possesses a single put-like element in its left operon. Because most lambdoid phages, including HK022, have antiterminator elements in …
