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2019

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Factors Contributing To Victim Employment, Victim Income Status, And Intimate Partner Violence In Jamaica, Marsha Fraser Jan 2019

Factors Contributing To Victim Employment, Victim Income Status, And Intimate Partner Violence In Jamaica, Marsha Fraser

Electronic Theses and Dissertations

Using 166 IPV police reports in Jamaica, this mixed-methods study (a) explored the utility of routine activities theory and control balance theory for explaining the relationship between victim employment and IPV; (b) explored risk factors for IPV; and (c) examined the relationships between victim employment and victim income status with IPV murder and IPV severity in the Jamaica. Content analysis of the narratives of the police reports supported both theories suggesting an integration of the two theories may be most fitting. Estrangement and infidelity emerged as bold themes. Infidelity was identified as an additional risk factor in the Jamaican context. …

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Mathematical Investigation Of The Spatial Spread Of An Infectious Disease In A Heterogeneous Environment, Arielle Gaudiello Jan 2019

Mathematical Investigation Of The Spatial Spread Of An Infectious Disease In A Heterogeneous Environment, Arielle Gaudiello

Electronic Theses and Dissertations

Outbreaks of infectious diseases can devastate a population. Researchers thus study the spread of an infection in a habitat to learn methods of control. In mathematical epidemiology, disease transmission is often assumed to adhere to the law of mass action, yet there are numerous other incidence terms existing in the literature. With recent global outbreaks and epidemics, spatial heterogeneity has been at the forefront of these epidemiological models. We formulate and analyze a model for humans in a homogeneous population with a nonlinear incidence function and demographics of birth and death. We allow for the combination of host immunity after …

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An Exploration Of The Relationship Between Work Climate, The Utilization Of Support Resources, And Compassion Fatigue Level In Child Protective Investigators, Shannon Holliker Jan 2019

An Exploration Of The Relationship Between Work Climate, The Utilization Of Support Resources, And Compassion Fatigue Level In Child Protective Investigators, Shannon Holliker

Electronic Theses and Dissertations

The impact of child maltreatment is far reaching, affecting the abused child, the family system, and the professionals tasked with providing support during the moments of crisis. As child protective investigators (CPIs) provide care and support to others, they are at high risk of experiencing secondary traumatic stress and/or burnout, both aspects of compassion fatigue. Researchers suggest that work climate, utilization of resources, and worker characteristics can impact CPI compassion-fatigue level. Drawing on extant literature, this study examined three research questions and seven hypotheses aiming to explore the relationship between work climate, resource utilization, CPI characteristics, and CPI compassion-fatigue level. …

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Atp Induced Molecular Disassembly Of Cytolethal Distending Toxin's B/C Heterodimer, George Huhn Jan 2019

Atp Induced Molecular Disassembly Of Cytolethal Distending Toxin's B/C Heterodimer, George Huhn

Electronic Theses and Dissertations

Cytolethal distending toxin (CDT) is a virulence factor produced by many Gram-negative bacteria, including Haemophilus ducreyi. This fastidious pathogen is the causative agent of genital cancroid. CDT is a heterotrimeric toxin with an AB2 structure consisting of a cell-binding "B" domain (CdtA + CdtC) and a catalytic "A" domain (CdtB) that has DNase activity. This toxin assembles in the bacterial periplasm that lacks ATP and is secreted into the extracellular environment. After cell binding, CDT is internalized by endocytosis and travels through the endosomes and Golgi before arriving in the endoplasmic reticulum (ER). CdtA is lost from the holotoxin before …

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Factors Influencing Nurse Practitioners' Weight Management Practices In Primary Care, Suzanne Hyer Jan 2019

Factors Influencing Nurse Practitioners' Weight Management Practices In Primary Care, Suzanne Hyer

Electronic Theses and Dissertations

More American adults are overweight or obese than ever before. Nurse practitioners (NPs) play a critical and expanding role in primary care, which is an ideal setting for the assessment and management of weight loss. NPs can make a significant contribution to tackling the obesity crisis. The study presented here seeks to close the gap in data related to how NPs approach weight management with their primary care patients. This study focused on a comprehensive examination of the current practice patterns of NPs related to weight management, a theoretical concept analysis of weight bias among healthcare providers, along with the …

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Frames And Phase Retrieval, Ted Juste Jan 2019

Frames And Phase Retrieval, Ted Juste

Electronic Theses and Dissertations

Phase retrieval tackles the problem of recovering a signal after loss of phase. The phase problem shows up in many different settings such as X-ray crystallography, speech recognition, quantum information theory, and coherent diffraction imaging. In this dissertation we present some results relating to three topics on phase retrieval. Chapters 1 and 2 contain the relevant background materials. In chapter 3, we introduce the notion of exact phase-retrievable frames as a way of measuring a frame's redundancy with respect to its phase retrieval property. We show that, in the d-dimensional real Hilbert space case, exact phase-retrievable frames can be of …

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It Takes Two To Tango: The Toxin-Chaperone Relationship, Alisha Kellner Jan 2019

It Takes Two To Tango: The Toxin-Chaperone Relationship, Alisha Kellner

Electronic Theses and Dissertations

Cholera toxin (CT) enters the cell via receptor-mediated endocytosis and travels in a retrograde fashion to the endoplasmic reticulum (ER). The catalytic A1 subunit (CTA1) is then displaced from the rest of the holotoxin, unfolds, and is exported to the cytosol where it regains an active conformation for the ADP-ribosylation of its G-protein target. We have shown that the cytosolic chaperones Hsp90 and Hsc70 are required for CTA1 translocation to the cytosol. We have also shown that both are able to independently bind and refold CTA1. Using libraries of CTA1-derived peptides, we have identified a single Hsc70 binding site, YYIYVI …

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I Decide When You Die: A Mixed-Methods Analysis Of Prior Reporting Of Physical Violence For Intimate Partner Homicides By Heterosexual Spouses In Florida, Donna King Jan 2019

I Decide When You Die: A Mixed-Methods Analysis Of Prior Reporting Of Physical Violence For Intimate Partner Homicides By Heterosexual Spouses In Florida, Donna King

Electronic Theses and Dissertations

It is generally believed that a victim of an intimate partner homicide, who faced ongoing physical violence prior to the killing, would have contacted authorities for assistance or protection some time prior to their death. However, the results of this study show that this notion that a victim of ongoing abuse will, more than likely, request help is a misconception. Through qualitative and quantitative methods analysis, this study reveals the dearth of prior reporting of physical violence to law enforcement or the court when an intimate partner homicide takes place between heterosexual spouses in Florida between 2006 and 2016. Additionally, …

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Holographic Optical Elements For Visible Light Applications In Photo-Thermo-Refractive Glass, Fedor Kompan Jan 2019

Holographic Optical Elements For Visible Light Applications In Photo-Thermo-Refractive Glass, Fedor Kompan

Electronic Theses and Dissertations

This dissertation reports on design and fabrication of various optical elements in Photo-thermo-refractive (PTR) glass. An ability to produce complex holographic optical elements (HOEs) for the visible spectral region appears very beneficial for variety of applications, however, it is limited due to photosensitivity of the glass confined within the UV region. First two parts of this dissertation present two independent approaches to the problem of holographic recording using visible radiation. The first method involves modification of the original PTR glass rendering it photosensitive to radiation in the visible spectral region and, thus, making possible the recording of holograms in PTR …

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Science Occupational Images And Aspirations Of African American/ Black Elementary Students, Saron Lamothe Jan 2019

Science Occupational Images And Aspirations Of African American/ Black Elementary Students, Saron Lamothe

Electronic Theses and Dissertations

Within the United States, more than a million jobs in science and engineering (S&E) are projected over the next few years; yet, the Nation lacks the workforce to meet these demands. Despite the need for a more diverse, qualified workforce, African Americans/Blacks remain disproportionately underrepresented in science occupations, science degree attainment, and in science postsecondary majors. The lack of science participation is reflective of how minority secondary students view science and science occupations as many consider the pursuit of a science career as unfavorable. Moreover, minority secondary students, who do choose to pursue science occupations, seem to possess inaccurate (or …

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Third-Order Optical Nonlinearities For Integrated Microwave Photonics Applications, Marcin Malinowski Jan 2019

Third-Order Optical Nonlinearities For Integrated Microwave Photonics Applications, Marcin Malinowski

Electronic Theses and Dissertations

The field of integrated photonics aims at compressing large and environmentally-sensitive optical systems to micron-sized circuits that can be mass-produced through existing semiconductor fabrication facilities. The integration of optical components on single chips is pivotal to the realization of miniature systems with high degree of complexity. Such novel photonic chips find abundant applications in optical communication, spectroscopy and signal processing. This work concentrates on harnessing nonlinear phenomena to this avail. The first part of this dissertation discusses, both from component and system level, the development of a frequency comb source with a semiconductor mode-locked laser at its heart. New nonlinear …

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Ultrasound Measured Flexor Muscle Thickness In The Forearms Of Rock Climbers, Michael Marsala Jan 2019

Ultrasound Measured Flexor Muscle Thickness In The Forearms Of Rock Climbers, Michael Marsala

Electronic Theses and Dissertations

PURPOSE: To examine differences in the forearms of rock climbers using ultrasound to measure the muscle thickness of the finger flexors. METHODS: A total of 33 participants were recruited, 22 climbers (22.23 years; 68% male) and 11 controls (21.8; 55% male). Climbers provided self-reported ratings of their climbing ability, skill level, and preferred mode of climbing (e.g. sport climbing vs. bouldering). Anthropometric measures, including body fat percentage, were measured in all participants. Ultrasound measurements were taken with the participant lying on their back on a padded table with their dominant hand supinated. Muscle thickness measurements were taken at the forearm …

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Overkill: A First Run Definition, Traccy Martins Jan 2019

Overkill: A First Run Definition, Traccy Martins

Electronic Theses and Dissertations

Homicide is a major social issue that has been studied by many researchers worldwide. The vast literature available, however, has avoided distinguishing homicide characterized by excessive wounds as a particular category or type of murder. This is what is often referred to as overkill. It has been observed in a variety of incidents, but it has not been systematically defined or examined in the literature in regard to why it occurs. This study aims to define "overkill" based on the number and extent of injuries for LGBT homicides between the years 1969 to 2018 (provided by Dallas Drake, co-founder of …

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Defining Effective Teacher Practices Among Students With Emotional Behavioral Disabilities, Zerek Mayes Jan 2019

Defining Effective Teacher Practices Among Students With Emotional Behavioral Disabilities, Zerek Mayes

Electronic Theses and Dissertations

This phenomenological study examined the lived experiences of special education teachers who worked with students with emotional behavioral disabilities (EBD) across various urban settings and educative environments. Given that the overall percentage of students receiving special education services has increased, the overall percentage of students with EBD served among all school-aged children and youth has remained below 1% (U.S. Department of Education, National Center for Education Statistics, 2018). The current failings of reform efforts to improve the academic achievement of students with EBD brings the roles, responsibilities and practices of teachers and their preparation into view. This study examined the …

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The Sustained Impact Of Prekindergarten Participation On Third Grade Academic Performance, Marissa Melin Jan 2019

The Sustained Impact Of Prekindergarten Participation On Third Grade Academic Performance, Marissa Melin

Electronic Theses and Dissertations

In this study, the researcher investigated whether the impact of participating in a prekindergarten program on academic achievement persists through third grade. The study compared three groups of students: students who participated in voluntary prekindergarten, private prekindergarten, and students who did not participate in any prekindergarten program. Using a series of two-factor multivariate analyses of variance (MANOVAs), this investigation found no interaction effects among prekindergarten participation and race, gender, socioeconomic status, presence of a discipline referral, or chronic absenteeism on academic achievement in the third grade. However, there was a main effect for the type of prekindergarten program on academic …

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If A Virtual Tree Falls In A Simulated Forest, Is The Sound Restorative? An Examination Of The Role Of Level Of Immersion In The Restorative Capacity Of Virtual Nature Environments, Jessica Michaelis Jan 2019

If A Virtual Tree Falls In A Simulated Forest, Is The Sound Restorative? An Examination Of The Role Of Level Of Immersion In The Restorative Capacity Of Virtual Nature Environments, Jessica Michaelis

Electronic Theses and Dissertations

Stress and cognitive fatigue have become a pervasive problem, especially in Western society. Stress and cognitive fatigue can have deleterious effects not only on performance, but also on one's physical and mental health. This dissertation presents a study in which the aim is to investigate the effects of virtual nature on stress reduction and cognitive restoration. Specifically, this study assessed the effects of Immersion (Non-immersive, Semi-immersive, Fully-immersive) and Exploration (Passive vs Active) on stress reduction and cognitive restoration. Additionally, restoration from the most effective virtual nature environment was compared to that of taking an active coloring break. Eighty-three university students …

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A Trauma-Informed School-Based Mental Health Counseling Intervention To Promote The Social-Emotional And Academic Functionality Of Children Living In Poverty, Mary Perleoni Jan 2019

A Trauma-Informed School-Based Mental Health Counseling Intervention To Promote The Social-Emotional And Academic Functionality Of Children Living In Poverty, Mary Perleoni

Electronic Theses and Dissertations

The purpose of this study was to investigate the effectiveness of a trauma-informed school-based mental health counseling intervention (TI-SBMHCI) on students enrolled in three Title I elementary schools. This study aimed to examine the impact of a TI-SBMHCI on participants' social-emotional functionality, trauma symptomology, and academic behavior. Counselors-in-training provided a 10-week TI-SBMHCI based off of Bath's (2008) The three Pillars of Trauma-informed Care and data was collected at pretest (first session), mid (fifth session), and posttest (tenth session). In addition, this investigation examined if participants showed greater improvement in academic behavior in comparison to students who did not receive a …

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Protective Behavioral Strategies And Alcohol-Related Sex Among College Students, Roselyn Peterson Jan 2019

Protective Behavioral Strategies And Alcohol-Related Sex Among College Students, Roselyn Peterson

Electronic Theses and Dissertations

Adverse sexual outcomes (e.g., sexual regret, sexual risk, and sexual assault) are a common experience among college students. In particular, regretted sex is reported by a third of college students and may result in psychological harm. Previous literature has found that alcohol is involved in approximately one third of regretted sex experienced by college students. A gap exists in the literature identifying who is more susceptible to experiencing a regretted sexual experience. Previous research has shown that students who implement protective behavioral strategies (PBS) while drinking are able to reduce alcohol-related negative consequences, including regretted sexual experiences. Three sub-types of …

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An Investigation Of The Appropriateness Of The English Language Learner Accountability Mark Established By The Every Student Succeeds Act Of 2015, Francisco Rivera Jan 2019

An Investigation Of The Appropriateness Of The English Language Learner Accountability Mark Established By The Every Student Succeeds Act Of 2015, Francisco Rivera

Electronic Theses and Dissertations

This quantitative study sought to disclose and describe differences in academic performance between English language learners (ELLs) and non-English language learners (non-ELLs) in grades sixth, seventh, and eighth during the two-year period of 2016 – 2018. A two-year period was utilized because of the two-year ELL accountability mark established by the Every Student Succeeds Act (ESSA) of 2015. The study used i-Ready diagnostic data, in both mathematics and reading, as the performance measures, and used ACCESS for ELLs (WIDA) tier scores (i.e., WIDA Tier A, WIDA Tier B, and WIDA Tier C) to identify the level of English language acquisition …

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The Life Experiences Of Women With An Intellectual Disability Who Were Sexually Assaulted, Jillian Schreffler Jan 2019

The Life Experiences Of Women With An Intellectual Disability Who Were Sexually Assaulted, Jillian Schreffler

Electronic Theses and Dissertations

The views of those with an intellectual disability (ID) on sexuality is not a topic many are willing to broach. Many challenges exist for those identified with ID when it comes to sexual education, including a lack of appropriate curricula; a lack of trained school personnel; the inability of school, state, and national stakeholders to agree on policy or curriculum content; and the generalizability of the content. These challenges are heightened by an increase in sexual assault of women with ID. To improve sexual assault prevention skills, the researcher conducted a phenomenological study to identify the current status of sexual …

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Electing Or Appointing School District Superintendents In The State Of Florida: A Comparison Of Characteristics And Performance Of Districts Led By Elected Superintendents Versus Districts Led By Appointed Superintendents, Timothy Smith Jan 2019

Electing Or Appointing School District Superintendents In The State Of Florida: A Comparison Of Characteristics And Performance Of Districts Led By Elected Superintendents Versus Districts Led By Appointed Superintendents, Timothy Smith

Electronic Theses and Dissertations

Florida and Alabama are the only two states in the United States of America with school districts led by either elected superintendents or appointed superintendents. The other 48 states only have appointed superintendent-led school districts. The current study was conducted to examine the impact of the superintendent governance structure on student learning by analyzing differences in student achievement between Florida school districts led by elected superintendents and Florida school districts led by appointed superintendents. The conceptual framework of the study was the tension between democratic localism and professionalism. Dynamics associated with the conceptual framework are relevant to the current debate. …

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Biochemical Characterization Of Rv2633c From Mycobacterium Tuberculosis And The Effects Of Mutagenesis On Iron Binding, Kyle Strickland Jan 2019

Biochemical Characterization Of Rv2633c From Mycobacterium Tuberculosis And The Effects Of Mutagenesis On Iron Binding, Kyle Strickland

Electronic Theses and Dissertations

Mycobacterium tuberculosis (Mtb) is a pathogenic bacterium that is the causative agent of the disease Tuberculosis (TB). TB kills an estimated 1.8 million people annually and roughly one third of the world's population carries Mtb in a dormant state. Drug resistant Mtb strains are on the rise, thus a new method of combating this disease is paramount. Mtb survival inside of macrophages requires overcoming various stressors such as; iron restriction, reactive oxygen species, and hypoxic conditions. Mtb employs the use of catalases, nitric oxide reductase, superoxide dismutase, and siderophores to aid in survival. These functions have also been found in …

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Stress, Coping, And Quality Of Life Among Parental Caregivers Of Children With Autism Spectrum Disorder, Dawn Turnage Jan 2019

Stress, Coping, And Quality Of Life Among Parental Caregivers Of Children With Autism Spectrum Disorder, Dawn Turnage

Electronic Theses and Dissertations

Purpose: Parental caregivers of children with Autism Spectrum Disorder (ASD) are exposed to stressors associated with the daily care of raising a child with a developmental disability, which may negatively impact parental quality of life (QOL). The specific aim of this study was to examine the relationships between demographic factors, stress, and coping among parental caregivers of children with ASD to determine whether predictors of QOL exist. Methodology: This study was descriptive, and an electronic survey was distributed to Florida parents of children, age 3-21 years old, diagnosed with ASD. The survey measured parent reported demographic factors, severity of the …

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A Phenomenological Study Of High School Assistant Principals Who Supervise Special Education, Erin Vacchio Jan 2019

A Phenomenological Study Of High School Assistant Principals Who Supervise Special Education, Erin Vacchio

Electronic Theses and Dissertations

This phenomenological study examined the lived experiences of high school assistant principals who lead the Exceptional Student Education (ESE) departments at their respective schools. The role of the school leader is critical and complex. Second to only the classroom teachers, school leaders have the ability to shape the school wide attitude and vision for students with disabilities. Knowing that in the past 30 years, the number of students with disabilities has nearly doubled in size, the expertise of school leaders in special education must also increase. Research on the experiences of high school administrators who serve students with intellectual disabilities …

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Phenomenological Study Of Urban Elementary Teachers With Proficient English Language Learners, Tracy Webley Jan 2019

Phenomenological Study Of Urban Elementary Teachers With Proficient English Language Learners, Tracy Webley

Electronic Theses and Dissertations

The purpose of this qualitative, phenomenological study was to explore the lived experiences of fourth grade teachers working in a large urban school district, where the achievement gap between English Language Learners (ELLs) and non-ELLs was smaller when compared to other schools within the district. The problem originated from the need to consider factors beyond teacher training that potentially influenced academic achievement. The research question guiding this study asked: What are the lived experiences of 4th grade teachers who have taught at identified elementary schools, where ELL students have demonstrated proficiency on the ELA portion of the state standards assessment? …

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Analyzing Faculty Attitudes And Actions Surrounding Distance Education Accommodations And Inclusiveness Based On Udl Principles, Catherine Cash Jan 2019

Analyzing Faculty Attitudes And Actions Surrounding Distance Education Accommodations And Inclusiveness Based On Udl Principles, Catherine Cash

Electronic Theses and Dissertations

As distance education continues to increase, it is vital that postsecondary institutions contribute time and resources towards upholding inclusive teaching practices that decrease barriers and increase opportunities for diverse student populations. This study examined faculty attitudes and actions surrounding online accommodations and inclusive teaching practices that were based on Universal Design for Learning (UDL) principles using the Inclusive Teaching Strategies Inventory (ITSI), which was adapted into the Inclusive Teaching Strategies Inventory-Distance Education (ITSI-DE) to focus on faculty teaching fully online courses. The ITSI-DE measured the following seven constructs: (a) Accommodations, (b) Accessible Course Materials, (c) Course Modifications, (d) Inclusive Lecture …

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A Comparison Of Self-Service Technologies (Ssts) In The U.S. Restaurant Industry: An Evaluation Of Consumer Perceived Value, Satisfaction, And Behavioral Intentions, Motaz Zaitouni Jan 2019

A Comparison Of Self-Service Technologies (Ssts) In The U.S. Restaurant Industry: An Evaluation Of Consumer Perceived Value, Satisfaction, And Behavioral Intentions, Motaz Zaitouni

Electronic Theses and Dissertations

Innovation in technology has been growing rapidly in recent years. Many restaurants have been utilizing different types of self-service technologies (SSTs) to enhance their operations and customer satisfaction. Despite, the rapid spread of SSTs in the restaurant industry, very limited empirical research has been conducted to evaluate the influence of SSTs type on customer dining experience. Therefore, the purpose of this dissertation was to examine the SSTs values that influence restaurant customers' satisfaction and their decision to continue to reuse SSTs. More specifically, this study utilized the Theory of Consumption Values (TCV) to examine consumers' perception of the SST values …

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Magnesium-Based Treatment For The Degradation Of Octachlorodibenzofuran And Trinitrotoluene, Amal Mogharbel Jan 2019

Magnesium-Based Treatment For The Degradation Of Octachlorodibenzofuran And Trinitrotoluene, Amal Mogharbel

Electronic Theses and Dissertations

The aim of the present research is to investigate the efficacy of using ball-milled zero-valent magnesium (ZVMg) with and without activated carbon (AC) for the dechlorination of polychlorinated dibenzofurans. Three different solvent systems are presented here which are ethanol, ethanol/ethyl lactate (90:10), and 2-butoxyethanol. These solvents in combination with ZVMg with and without activated carbon were tested towards the degradation of octachlorodibenzofuran (OCDF, the most highly chlorinated PCDF congener). All the tested systems were very powerful and reductively dechlorinated OCDF to less chlorinated congeners. However, the system of ball-milled ZVMg and ethanol was the only system which converted OCDF and …

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Thermo- And Zero-Valent Iron-Activated Persulfate Oxidation Of 3,5,6-Trichloro-2-Pyridinol In An Aquatic System, Roaa Mogharbel Jan 2019

Thermo- And Zero-Valent Iron-Activated Persulfate Oxidation Of 3,5,6-Trichloro-2-Pyridinol In An Aquatic System, Roaa Mogharbel

Electronic Theses and Dissertations

The compound 3,5,6-trichloro-2-pyridinol (TCPy), a metabolite of the broad-spectrum organophosphorous insecticide chlorpyrifos, is both more persistent and more water soluble than its parent compound. This difference, which allows TCPy to more readily leach into surface water and groundwater, has led to widespread contamination of TCPy in soils and aquatic environments. In this study, the degradation of TCPy by sulfate radicals was evaluated using zero valent ironactivated persulfate systems and heat activated persulfate system in aqueous media. Response surface methodology coupled with Box-Behnken design was applied in these studies to evaluate the effects of the independent variables on the mineralization of …

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Improved System For Fabrication And Characterization Of Nanophotonic Devices By Multi-Photon Lithography, Rashi Sharma Jan 2019

Improved System For Fabrication And Characterization Of Nanophotonic Devices By Multi-Photon Lithography, Rashi Sharma

Electronic Theses and Dissertations

A new system for multi-photon lithography (MPL) was developed and used to fabricate three-dimensional (3D) structures with higher aspect ratio, better resolution, improved fidelity, and reduced structural distortion relative to a conventional implementation of MPL. A set of curved waveguides (Rbend = 19 μm, and 38 μm) and straight waveguides (length = 50 μm, Rbend = ∞) were fabricated in an epoxide photopolymer and optically characterized using light having a wavelength in vacuum of λ0 = 2.94 μm. The optical performance of the waveguides was compared to novel spatially-variant photonic crystals (SVPCs) previously studied in the group. The waveguides were …

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