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Detection Of Inorganic Phosphate In Environmental Water Samples Using A Terbium And Gold Nanoparticle-Based Fret Chemosensor, Madeleine Johnson
Detection Of Inorganic Phosphate In Environmental Water Samples Using A Terbium And Gold Nanoparticle-Based Fret Chemosensor, Madeleine Johnson
Electronic Theses and Dissertations
A novel chemosensor for the detection of inorganic phosphate (Pi) in environmental water samples is outlined. The sensing solution is comprised of a luminescent lanthanide, terbium (Tb3+), chelated to ethylenediaminetetraacetic acid (EDTA) acid in solution with cetyltrimethylammonium bromide (CTAB)- capped gold nanoparticles (AuNPs). The Tb-EDTA and AuNPs undergo a Fluorescence resonance energy transfer (FRET) mechanism in which the Tb3+ luminescence is quenched. Upon the addition of inorganic phosphate (Pi), the AuNPs begin to aggregate and precipitate out of solution. The aggregation of AuNPs results in the restoration of the Tb-EDTA signal which can then be correlated to Pi concentration in …
Mucking About: Hydrologic Regime And Soil Carbon Storage In Restored Subtropical Wetlands, Alicia Huber
Mucking About: Hydrologic Regime And Soil Carbon Storage In Restored Subtropical Wetlands, Alicia Huber
Electronic Theses and Dissertations
Wetlands are extremely important ecosystems that have declined drastically worldwide, continue to be lost, and are threatened globally. They perform a number of important ecosystem services such as flood control, provide habitat for many species, and have aesthetic and recreational value. Wetlands are also important to the global carbon (C) cycle. Wetland soils are especially effective C sinks because they have high primary productivity and low decomposition rates due to flooded, anoxic conditions. Increased recognition of wetlands' value has led to more ecological and hydrological restoration of degraded wetlands to mitigate the effects of wetland destruction. Hydrological restoration, which attempts …
Characterization Of Novel Borrelia Burgdorferi Transcripts Expressed During Tick And Mammalian Infection, Philip Adams
Characterization Of Novel Borrelia Burgdorferi Transcripts Expressed During Tick And Mammalian Infection, Philip Adams
Electronic Theses and Dissertations
The purpose of this dissertation is to characterize the transcriptome of Borrelia (Borreliella) burgdorferi to discover novel transcripts, important for pathogenesis. As a spirochete and the etiological agent of Lyme disease, the foremost vector-borne bacterial infection in the world, B. burgdorferi fulfills a distinctive niche among bacterial pathogens. Persisting in the disparate environments of a tick vector and mammalian reservoirs, it is absolutely dependent on its hosts for transmission and nutrient acquisition. B. burgdorferi harbors a complex fragmented genome which is largely linear, unlike that of most prokaryotes, lacks an array of classically described metabolic genes, and contains an unusually …
The Microbial Ecosystem Of Beer Spoilage And Souring: Competition And Cooperation In The Age Of Bioinformatics, Andrew Kettring
The Microbial Ecosystem Of Beer Spoilage And Souring: Competition And Cooperation In The Age Of Bioinformatics, Andrew Kettring
Electronic Theses and Dissertations
The brewing industry generates $350 billion in revenue in the US annually, representing 1.9% of the gross domestic product. Spoilage is a persistent problem throughout production and distribution that causes economic loss, and is therefore meticulously avoided. Contrarily, artisanal sour beers are necessarily produced by a diverse variety of these spoilage organisms metabolically interacting in symbiosis as a microbial ecosystem. We sought to gain insight into factors driving assembly of microbial communities by testing a long-debated Darwinian hypothesis. A collection of community members were screened in co-culture and novel bioinformatics tools were developed to predict observed interactions. A fundamental understanding …
Effects Of Collaboration Between Speech-Language Pathologists And Third-Grade Teachers On Student Vocabulary Outcomes, Mary Mitchell
Effects Of Collaboration Between Speech-Language Pathologists And Third-Grade Teachers On Student Vocabulary Outcomes, Mary Mitchell
Electronic Theses and Dissertations
A persistent literacy crisis continues to be reflected in international (Organisation for Economic Co-operation and Development [OECD], 2013), national (National Center for Education Statistics [NCES], 2015), and local literacy outcome data. Educators, including speech-language pathologists (SLPs), are called upon to collaborate to support students who struggle with academic language/literacy. However, few studies have operationally defined collaboration and investigated the effects of collaboration on student achievement. As a result, there is insufficient guidance for educators about ways to design, implement, and assess the effectiveness of collaboration models, defined in terms of their effects on student outcomes. There were two main objectives …
A Comparative Study Of Student Performance, Attendance, And Discipline In A Community School In A Large Urban School District In The Southern United States, Juanita Morrow
Electronic Theses and Dissertations
The goal of this research was to investigate the impact of the community school practices such as extended/supplemental enrichment time, character development, anger management, counseling, tutoring, and mental and physical healthcare on student performance, attendance and discipline at a community school in a large urban school district in the southern U.S. The select population and sample for this study was the school's 2011-2012 senior cohort, before the school's implementation of community school practices and the school's 2015-2016 senior cohort, after implementation of community school practices at the select community school. In an effort to more accurately determine the effectiveness of …
The Influences Of Mindfulness And Neuromotor Exercise Mode On Balance In Healthy Older Adults, Maxine Hicks
The Influences Of Mindfulness And Neuromotor Exercise Mode On Balance In Healthy Older Adults, Maxine Hicks
Electronic Theses and Dissertations
This study investigated the roles of mindfulness and balance to optimize strategies for fall prevention in healthy older adults. The purpose of this study was to examine the association of mindfulness with respect to balance in healthy older adults who are experienced in meditative versus non-meditative modes of neuromotor exercise. This was a comparative descriptive study that used a convenience sample of N=86 older adults (20 male; mean age = 69.33 ± 7.24; range: 60 – 93 years). The sample included experienced participants of meditative (e.g., yoga, Tai chi) and non-meditative (e.g., partnered dance) neuromotor exercise recruited from community yoga, …
Plasticity Of Central And Peripheral Nervous System: Effects Of Oxygen-Glucose Deprivation (Ogd) And Chronic Intermittent Hypoxia (Cih), Jin Chen
Electronic Theses and Dissertations
Transient receptor potential canonical 6 (TRPC6) channels are permeable to Na+ and Ca2+ and are widely expressed in the brain. In this study, we investigated the role of TRPC6 following ischemia/reperfusion (I/R) and oxygen-glucose deprivation (OGD). We found that TRPC6 expression was increased in wild type (WT) mice cortical neurons following I/R and in primary neurons with OGD, and that deletion of TRPC6 reduced the I/R-induced brain infarct in mice and the OGD- /neurotoxin-induced neuronal death. Using live-cell imaging to examine intracellular Ca2+ levels ([Ca2+]i), we found that OGD induced a significant higher increase in glutamate-evoked Ca2+ influx compared to …
Wearable Passive Wireless Mems Respiration Sensor, Sina Moradian
Wearable Passive Wireless Mems Respiration Sensor, Sina Moradian
Electronic Theses and Dissertations
In this study a passive sensor that wirelessly monitors the profile of the human respiratory system is presented. The sensor was designed to be wearable, weighs less than 10 grams and is durable. The sensor is made of a RF piezoelectric MEMS resonator and an ultra-high frequency antenna made of a thin metal film formed on a flexible substrate . The resonance frequency of the TPoS resonator shifts as a function of condensation and evaporation of water vapor on the surface of the resonator and changes in resonator's temperature. These parameters change in each in response to inspiration and expiration …
Mid-Infrared Absorption Spectrometer For Multi-Species Detection Using Leds For Space Applications: Development And Flight Testing, Michael Villar
Mid-Infrared Absorption Spectrometer For Multi-Species Detection Using Leds For Space Applications: Development And Flight Testing, Michael Villar
Electronic Theses and Dissertations
As commercial space travel expands, the need for specialized instrumentation to ensure the safety of crew and cargo becomes increasingly necessary. Both the Federal Aviation Administration (FAA) and pioneers in the space tourism industry have expressed an interest in a robust, low cost, and low power consumption sensor to measure atmospheric composition aboard spacecraft. To achieve this goal a time-resolved NDIR absorption sensor that measures transient levels of gaseous carbon dioxide (CO2) and carbon monoxide (CO) was developed. The developed sensor has a wide range of applications applicable to the growing needs of industry, from monitoring CO and CO2 levels …
Field Evaluation Of Insync Adaptive Traffic Signal Control System In Multiple Environments Using Multiple Approaches, Md Shafikul Islam Shafik
Field Evaluation Of Insync Adaptive Traffic Signal Control System In Multiple Environments Using Multiple Approaches, Md Shafikul Islam Shafik
Electronic Theses and Dissertations
Since the beginning of signalization of intersections, the management of traffic congestion is one of most critical challenges specifically for the city and urbanized area. Almost all the municipal agencies struggle to manage the perplexities associated with traffic congestion or signal control. The Adaptive Traffic Control System (ATCS), an advanced and major technological component of the Intelligent Transportation Systems (ITS) is considered the most dynamic and real-time traffic management technology and has potential to effectively manage rapidly varying traffic flow relative to the current state-of-the-art traffic management practices. InSync ATCS is deployed in multiple states throughout the US and expanding …
Development And Application Of Microelectrodes To Study In Situ Disinfectant Loss And Corrosion On Metal Surface, Xiangmeng Ma
Development And Application Of Microelectrodes To Study In Situ Disinfectant Loss And Corrosion On Metal Surface, Xiangmeng Ma
Electronic Theses and Dissertations
The primary objective of this research was to develop, fabricate, evaluate and utilize microelectrodes to metal coupons in artificial water system. In the brass experiment, it presented profiles of direct measurements of free chlorine/monochloramine, oxygen and pH to brass and cement based coupons. In monochloraminated water, brass showed a much faster corrosion process under observation. Profiles showed a less monochloramine consumption with as high as 7% greater oxygen utilization comparing to the brass in free chlorine solution, reflecting oxygen could be a major part of the corrosion initiation process. While cement showed less reactive characteristics to disinfectants and oxygen compared …
From Tunnel Vision To Bird's-Eye View: The Development Of A Broad Harassment Construct, Lindsay Dhanani
From Tunnel Vision To Bird's-Eye View: The Development Of A Broad Harassment Construct, Lindsay Dhanani
Electronic Theses and Dissertations
Research on workplace harassment has increased in recent years, resulting in a large body of evidence suggesting that perceiving harassment at work leads to a host of negative outcomes (Jones, Peddie, Gilrane, King, & Gray, 2016; Pascoe & Richman, 2009; Triana, Jayasinghe, & Pieper, 2015; Willness, Steel, & Lee, 2007). However, despite calls to broaden the conceptualization of workplace harassment, the dominant approach in the literature has been to study a single, discrete form of harassment in isolation. The current paper addresses this limitation by simultaneously assessing multiple forms of harassment (i.e., ethnic harassment, sexual harassment, age harassment, heterosexist harassment, …
Getting The Work Out Of Workouts: Evaluating The Effectiveness And Outcomes Of A Physical Exercise Motivational Intervention For Older Workers, Brandon Sholar
Getting The Work Out Of Workouts: Evaluating The Effectiveness And Outcomes Of A Physical Exercise Motivational Intervention For Older Workers, Brandon Sholar
Electronic Theses and Dissertations
To mitigate their estimated $300 billion in annual health-related losses, many companies have instituted workplace wellness initiatives designed to promote physical activity among their employees, improving the overall health of their workforce. Though middle-aged and older workers may potentially enjoy the greatest physical, stress and cognitive benefits from regular exercise, workplace wellness programs have been less successful in attracting such employees. This study developed and tested a 6-week exercise motivation intervention designed to meet the needs of sedentary, older working adults and to determine what non-physical benefits might result from increased levels of physical exercise. The intervention, based primarily on …
Not Woman Enough Harassment: Scale Development And An Integrated Model From Antecedent To Outcome, Amanda Wolcott
Not Woman Enough Harassment: Scale Development And An Integrated Model From Antecedent To Outcome, Amanda Wolcott
Electronic Theses and Dissertations
The rise of research on workplace mistreatment in the past twenty years can be attributed to the realization that workplace mistreatment is associated with a host of deleterious outcomes for both the individual targets of the mistreatment and the organizations in which they work. However, the extant literature is failing to capture the full range of sex-based mistreatment that people may experience through a tendency to focus solely on sexual harassment and sex discrimination, which are very specific types of behavior based on one's sex and gender stereotypes. In this dissertation, I introduce the construct of Not Woman Enough Harassment, …
Chaotification As A Means Of Broadband Vibration Energy Harvesting With Piezoelectric Materials, Daniel Geiyer
Chaotification As A Means Of Broadband Vibration Energy Harvesting With Piezoelectric Materials, Daniel Geiyer
Electronic Theses and Dissertations
Computing advances and component miniaturization in circuits coupled with stagnating battery technology have fueled growth in the development of high efficiency energy harvesters. Vibration-to-electricity energy harvesting techniques have been investigated extensively for use in sensors embedded in structures or in hard-to-reach locations like turbomachinery, surgical implants, and GPS animal trackers. Piezoelectric materials are commonly used in harvesters as they possess the ability to convert strain energy directly into electrical energy and can work concurrently as actuators for damping applications. The prototypical harvesting system places two piezoelectric patches on both sides of the location of maximum strain on a cantilever beam. …
The Study Of Physiochemical Properties Of Cerium Oxide Nanoparticles And Its Application In Biosensors, Swetha Barkam
The Study Of Physiochemical Properties Of Cerium Oxide Nanoparticles And Its Application In Biosensors, Swetha Barkam
Electronic Theses and Dissertations
Biosensors continue to get smaller and faster with the advancement in nanotechnology through the use of nanomaterials to achieve high sensitivity and selectivity. However, the continued reliance on biomolecules or enzymes in the biosensor assembly poses the problem of reproducibility, storage and complexity. This dissertation research address some of the challenges by investigating the physiochemical properties of nanoparticles to understand its interaction with biological systems and develop enzyme free biosensors. In this study, we have demonstrated a novel strategy to integrate cerium oxide nanoparticles (CNPs) as an efficient transducer through rigorous screening for developing enzyme/label free biosensors for detecting analytes …
Investigating Novel Water Treatment Methods And Monitoring Techniques For Sulfide-Laden Groundwater Supplies, Benjamin Yoakum
Investigating Novel Water Treatment Methods And Monitoring Techniques For Sulfide-Laden Groundwater Supplies, Benjamin Yoakum
Electronic Theses and Dissertations
This dissertation reports on research related to novel water treatment and monitoring techniques for sulfide-laden groundwater supplies. The dissertation is divided into several chapters with four core chapters focused on investigations studying a novel water treatment method or monitoring technique. The first investigation assessed the efficacy of multi-pass spray aeration treatment to remove trihalomethanes (THMs) and to reduce the total THM formation potential (TTHMFP) of an aerated water column post-aeration. A recirculating spray aeration pilot unit was constructed to make this assessment. To assess the effect of multi-pass spray aeration on the TTHMFP, water was recirculated through a fabricated spray …
Pioneer Of Self: An Intimate Retrospective, Juliet Diienno
Pioneer Of Self: An Intimate Retrospective, Juliet Diienno
Electronic Theses and Dissertations
Reality is ever changing, and as we gain experience, our perceptions of it transform. Plato's allegory of the cave addresses the way one person's journey from darkness into daylight transforms his reality. My own body of work can be described through this extended metaphor, similarly benefiting from effects of education, self-reflection, and experience dramatically altering my perceptions of myself and my artwork. As projected by Plato, I was forced through an arduous confrontation with my lack of understanding of the human condition, reshaping my ideas to comprehend and adapt to the metaphorical daylight. With new understanding, I return to give …
The Communicative Value Of Emr Education: Medical Students' Perceptions Of Introductions To Emrs, Justiss Burry
The Communicative Value Of Emr Education: Medical Students' Perceptions Of Introductions To Emrs, Justiss Burry
Electronic Theses and Dissertations
Research in medical education includes a number of studies that describe the complexities (Tierney et al., 2013; Gagon et al., 2009; Pippitt, Stevenson, & Samuelson, 2013), benefits (Milano et al., 2014; Hammoud et al., 2012; Silverman et al., 2014), and limitations (Peled, Sagher, Morrow, & Dobbie, 2009; Wald, George, Reis, & Taylor, 2014; Pelletier, 2016) of helping medical students understand and achieve fluency with electronic medical records (EMRs). In addition, studies in the rhetoric of health and medicine (RHM) have been calling to attention the effectiveness of rhetorical studies within medical contexts (Scott, Segal, & Keranen, 2013; Segal, 2005; Rausch, …
Medieval Ingenuity In Fourteenth Century English Milling In Middlesex, Norfolk, And Northumberland Counties, Brett Pelham
Medieval Ingenuity In Fourteenth Century English Milling In Middlesex, Norfolk, And Northumberland Counties, Brett Pelham
Electronic Theses and Dissertations
This thesis examines the effect of population losses from outbreaks of the Bubonic Plague on capital investment for labor saving technology in England. The cities in Middlesex and Norfolk advance the economy in their surrounding areas. Northumberland's access to Newcastle-Upon-Tyne did not house as much wealth for Coquetdale and Glendale. However, Edward I's constant investment in the recently acquired Scottish territory provided the area with income from the crown. While the decrease in population was catastrophic and presented social turmoil, the surviving population continued to make economic adjustments. The economic adaptations provided relief to a strained population. Trade should have …
Spatial And Temporal Compressive Sensing For Vibration-Based Monitoring: Fundamental Studies With Beam Vibrations, Vaahini Ganesan
Spatial And Temporal Compressive Sensing For Vibration-Based Monitoring: Fundamental Studies With Beam Vibrations, Vaahini Ganesan
Electronic Theses and Dissertations
Vibration data from mechanical systems carry important information that is useful for characterization and diagnosis. Standard approaches rely on continually streaming data at a fixed sampling frequency. For applications involving continuous monitoring, such as Structural Health Monitoring (SHM), such approaches result in high data volume and require powering sensors for prolonged duration. Furthermore, adequate spatial resolution, typically involves instrumenting structures with a large array of sensors. This research shows that applying Compressive Sensing (CS) can significantly reduce both the volume of data and number of sensors in vibration monitoring applications. Random sampling and the inherent sparsity of vibration signals in …
The Role Of Accounts And Apologies In Mitigating Blame Toward Human And Machine Agents, Kimberly Stowers
The Role Of Accounts And Apologies In Mitigating Blame Toward Human And Machine Agents, Kimberly Stowers
Electronic Theses and Dissertations
Would you trust a machine to make life-or-death decisions about your health and safety? Machines today are capable of achieving much more than they could 30 years ago—and the same will be said for machines that exist 30 years from now. The rise of intelligence in machines has resulted in humans entrusting them with ever-increasing responsibility. With this has arisen the question of whether machines should be given equal responsibility to humans—or if humans will ever perceive machines as being accountable for such responsibility. For example, if an intelligent machine accidentally harms a person, should it be blamed for its …
The Effect Of Sport Participation On Bone, Maggie M. Minett
The Effect Of Sport Participation On Bone, Maggie M. Minett
Electronic Theses and Dissertations
Mechanical loading – or physical activity – is essential in the bone remodeling process as well as optimizing the densitometric and geometric properties of bone throughout the lifespan. Participation in sports is a common mode of physical activity that can enhance bone mass accrual at younger ages and facilitate bone mass maintenance at older ages. Research suggests that sport participation continued from adolescence into high school and college provides added benefits on aBMD and cortical bone measures and these benefits remain 10-15 years after retirement from sport. However, in most studies, the higher rates of bone loss after sport cessation …
Investigating The Atmospheric Production Of Perchlorate: Inference From Polar Ice Cores, Thomas S. Cox
Investigating The Atmospheric Production Of Perchlorate: Inference From Polar Ice Cores, Thomas S. Cox
Electronic Theses and Dissertations
Perchlorate (ClO4) in the environment is of concern, because of potential health risks to humans, among other reasons. Evidence suggests that the majority of environmental perchlorate is formed in the atmosphere (likely in the stratosphere), in chemical processes involving ozone and stratospheric chlorine. A lack of knowledge in regards to the processes has resulted in a limited understanding of the environmental conditions and variables that influence perchlorate production and consequently perchlorate prevalence and variability in the environment. In this study, perchlorate was measured, using an established ion chromatography-‐electrospray ionization-‐tandem mass spectrometry (IC-‐ESI-‐ MS/MS) technique, in over 1,600 snowpit …
Control Of Pore Characteristics Of Porous Silicon Using Non-Toxic Electrochemical Etching For Photovoltaics And Supercapacitor Applications, Utpal Saha
Electronic Theses and Dissertations
Porous silicon has exhibited lower reflectance and higher surface area than the pristine silicon. This property of porous silicon can be applied to photovoltaic (PV) application for more efficient silicon solar cells and for higher performance of supercapacitors. NH4Fl electrolytic etching solution has been used to fabricate porous silicon, but the control of pore morphology of silicon is achieved only by controlling the time. Therefore, it is urgently required to use other etching parameters such as voltage and current to achieve flexible control of pore properties. Porous silicon can also be used to fabricate supercapacitors. An established approach to make …
Human Dimensions Of Habitat Loss In The Plains And Prairie Potholes Ecoregion, Lily A. Sweikert
Human Dimensions Of Habitat Loss In The Plains And Prairie Potholes Ecoregion, Lily A. Sweikert
Electronic Theses and Dissertations
The Plains and Prairie Potholes Ecoregion (PPPE), is located in the north-central contiguous United States and is one of the most imperiled grassland regions in the world. Most of the region is privately owned and used for the production of agricultural commodities. In addition to its direct benefits to humanity, the PPPE provides multiple ecosystem services including, soil and water quality improvements, carbon sequestration, weather amelioration, and wildlife habitat. Recent increases in expansion of row crop agriculture concerns conservation practitioners about the long-term integrity of the PPPE. Conservation practitioners are looking to improve their private landowner conservation initiatives in the …
Worldwide Optimal Pics Search, Ruchira Tabassum
Worldwide Optimal Pics Search, Ruchira Tabassum
Electronic Theses and Dissertations
Pseudo Invariant Calibration Sites (PICS) have proven to be a dependable calibration source for determining degradation of visible and infrared sensor response due to their temporal stability and spatial uniformity. One limit of PICS is that only a handful have been identified, primarily in desert areas of North Africa, Saudi Arabia, and elsewhere. A large number of PICS would not only facilitate calibration of existing and future sensors, but also provide an alternative to internal on-board calibrator data, resulting in significant cost savings and simplification in sensor design. As a result, the process to efficiently identify additional PICS is highly …
Development Of Highly Sensitive And Selective Breathing Sensors Using Molecular Imprinted Filtering For Diabetic And Alcoholic Patients, Md. Saleh Akram Bhuiyan
Development Of Highly Sensitive And Selective Breathing Sensors Using Molecular Imprinted Filtering For Diabetic And Alcoholic Patients, Md. Saleh Akram Bhuiyan
Electronic Theses and Dissertations
Wellness sensor technology is an emerging diagnostic test research field, which mostly deal with the point of care of the patients in the recent days. Due to the lack of awareness from the patients, most diseases cannot be detected in due time. This led to worse conditions, such as diabetic and alcoholic syndrome. Therefore, many research groups have been working to develop portable sensor devices that can track serious diseases. These include diabetic and alcoholic biomarkers in breathing. These devices have very high selectivity and reliability. However, the major limitation of biomarkers is that it deals with the bio-molecular based …
Modeling Streamflow And Water Quality Impacts Of Grassland Establishment, Conversion, And Management In Skunk Creek Watershed, Jiyeong Hong
Modeling Streamflow And Water Quality Impacts Of Grassland Establishment, Conversion, And Management In Skunk Creek Watershed, Jiyeong Hong
Electronic Theses and Dissertations
Grassland is a valuable natural resource with many environmental benefits, which include erosion control, wildlife habitat promotion, water quality protection, and flood prevention. Conversion of grassland to cultivated cropland has been linked to environmental quality concerns. The goal of this study was to model the impacts of grassland establishment, depletion, and management on hydrology and water quality in Skunk Creek watershed in eastern South Dakota. The specific objectives are to quantify the impacts of grassland conversion and selected management regimes on streamflow and water quality, and explore the optimum grassland establishment location within a watershed to achieve water quality benefits. …