Digital Commons Network^™

Persistence Of Ebola Virus In Survivors & Risks Of Sexual Transmission: A Systematic Review, Allison Cheung

Public Health Theses

Background: Longitudinal cohort studies of Ebola virus disease (EVD) survivors from the 2014-2016 West African outbreak have found evidence of Ebola virus (EBOV) and EBOV RNA persistence in the bodily fluids of survivors, particularly in semen. This new evidence has raised the possibility of sexual transmission of EBOV by EVD survivors. The current interim guidance issued by the World Health Organization (WHO) recommends safer sex practices for at least 12 months after acute disease onset (ADO). However, based on new evidence, these recommendations may require revision.

Objective: The main aim of this article is to present and evaluate evidence on …

Estimating Mortality After Natural Disasters In Low- And Middle-Income Countries: A Systematic Review, Joseph Clingerman

Public Health Theses

Background

The outcomes of natural disasters produce many complex uncertainties and statistics, many of which have no metrics to assess how accurate they are. In particular, mortality estimates in low- and middle-income countries encompass many variables in their inherently challenging physical, political, and logistical landscapes. Given that there has been no known systematic review of assessing mortality estimation methodologies, the author aimed to provide a systematic review of known methodologies and provide a framework to assess mortality estimation methodologies.

Methods

The author performed a systematic search of electronic databases from the past two decades up to January 2019. In addition, …

Exposure To Atmospheric Metals Using Moss Bio-Indicators And Neonatal Health Outcomes In Portland, Oregon, Saskia Comess

Public Health Theses

Background: Exposures to certain metals are associated with adverse birth outcomes, including inhibited fetal growth and congenital defects. Previous studies focused on metals such as lead and arsenic, and primarily assessed exposure using biological monitoring, which does not provide insights into sources. Examining exposure to metals via atmospheric pathways is challenging due to a lack of high-resolution air-pollution data. We applied a unique map of atmospheric metal pollution, derived from bio-indicator moss samples, as a screening tool to study neonatal health risks of atmospheric metal pollution in Portland, Oregon, a city of 640,000 people with several metal-emitting industrial sources.

Methods: …

Randomized Trial Of Weight Loss On Ghrelin Levels Among Breast Cancer Survivors, Leah Puklin

Public Health Theses

Purpose: Obesity is associated with increased breast cancer risk and mortality. Ghrelin is a hormone that participates in a negative feedback loop to regulate body weight. Understanding the impact of an individualized, sustainable, dietary and exercise weight-loss intervention on circulating ghrelin levels could provide insight on weight control mechanisms among overweight and obese breast cancer survivors.

Methods: The Lifestyle, Exercise, and Nutrition (LEAN) randomized controlled trial was a 6-month weight loss trial conducted to examine the effect of a weight loss intervention versus usual care on outcomes in 151 breast cancer survivors with BMI ≥ 25 kg/m2. Fasting blood samples …

Strengthening Maternal, Infant And Young Child Feeding Training And Education Delivery In Ghana, Madelynn Raye Tice

Public Health Theses

Objective: To document the maternal, infant and young child feeding (MIYCF) training and education system within Ghana and identify key factors influencing MIYCF training and education delivery by health care providers.

Design: A qualitative study that utilized in-depth interviews.

Setting: The study was conducted within the Central Region of Ghana.

Participants: Fourteen health care providers that served as MIYCF trainers or educators were included in this study.

Analysis: Interviews were conducted in English, audio recorded, and then transcribed. A grounded theory approach was used to create a conceptual model of the themes that emerged from the interview. Half of the …

Nut And Peanut Butter Consumption And Risk Of Prostate Cancer In The Nih-Aarp Diet And Health Study, Mimi (Trucmai) Nu Ton

Public Health Theses

Background: While nuts and their related nutrients have been inversely associated with some cancers, the association between nut consumption and prostate cancer has been inconsistent.

Methods: We conducted an analysis of the association between nut and peanut butter consumption and risk of incident prostate cancer among 173,243 men in the prospective NIH-AARP Diet and Health Study. There was a total of 18,619 incident prostate cancer cases during the 16 years of follow-up. We calculated hazard ratios (HRs) and 95% confidence intervals (CIs) using Cox proportional hazards regression for intake of nuts, peanut butter, and total nuts (nuts plus peanut butter), …

Exploring Pharmaceutical Waste Prevention And Disposal Practices In Nurse Populations, Natasha Wasim

Public Health Theses

Objective: This research study aimed to explore pharmaceutical waste prevention and disposal practices in nurse populations.

Methods: A descriptive, cross-sectional survey was employed through the Qualtrics survey system. The survey questions were designed to probe knowledge, behavior, and attitudes of nurses towards pharmaceutical waste. Participants included intensive care unit nurses

and perioperative nurses in the Yale New Haven Health System.

Results: A total of 104 surveys were collected. Nurses were asked about the importance of proper waste disposal, and 95.2% of nurses (N=99/104) believed that appropriate waste disposal is important to “protect the environment health.” The survey also asked about …

Prion Epidemiology And The Npdpsc’S Experience With Rt-Quic, Aleksandra Wrona

Public Health Theses

Prion diseases, or transmissible spongiform encephalopathies, constitute a wide array of invariably fatal rapidly progressive neurodegenerative illnesses that affect both humans and animals. The gold standard of diagnosis for these diseases is through neuropathologic examination of brain tissue following autopsy. In September 2018, the Centers for Disease Control and Prevention (CDC) added positive real-time quaking-induced conversion (RT-QuIC) test result as a likely indicator of certain human prion diseases. With high sensitivity and specificity approaching 100%, RT-QuIC has quickly become one of the most powerful antemortem diagnostic tools.

This paper will demonstrate why changes in diagnostic criteria and reporting metrics are …

Using Volatile Organic Compounds In Exhaled Breath As A Biomarker For Early Lung Cancer Detection: A Systematic Review, Jieqiong Zhou

Public Health Theses

Lung cancer has become the most commonly diagnosed cancer and the leading cause of cancer deaths globally. The major problem of the high mortality rate is the late diagnosis. Conventional methods utilized for clinical detection of lung cancer have employed expensive and invasive medical procedures that cause stress, discomfort, and pain to patients, and have demonstrated low sensitivity, substantial false negatives, and risk of radiation exposure. The drawbacks obviate their applicability to large-scale, population-wide screening efforts. This paper reviews the applications of using volatile organic compounds (VOCs) in exhaled breath as a potential approach for early lung cancer detection.

An …

Discovery Of Adults Linked To Cloning Oceanic Starfish Larvae (Oreaster, Asteroidea: Echinodermata), Daniel Janies, Yoalli Quetzalli Hernández-Díaz, Francisco Alonso Solís-Marín, Karen Lopez, Boyan Alexandrov, Madeline Galac, Joan Herrera, Janessa Cobb, Thomas A. Ebert, Isidro Bosch

Biology

Two juvenile specimens of a new species of Oreaster were collected at Parque Nacional Arrecife Alacranes and Triángulos Oeste in the southern Gulf of Mexico. DNA of mitochondrial loci identifies them as members of the same clade as cloning larvae of Oreaster found abundantly in waters of the Florida Current-Gulf Stream system, and distinct from Oreaster clavatus and Oreaster reticulatus, the two known Oreasteridae species in the North Atlantic. Larvae from the new species of Oreaster persist as clones but also metamorphose and settle to the benthos with typical asteroid morphology. © 2019 The University of Chicago.

The Divergent Effects Of Cdppb And Cannabidiol On Fear Extinction And Anxiety In A Predator Scent Stress Model Of Ptsd In Rats, John Shallcross, Peter Hámor, Allison R. Bechard, Madison Romano, Lori Knackstedt, Marek Schwendt

Psychology

Post-traumatic stress disorder (PTSD) currently has no FDA-approved treatments that reduce symptoms in the majority of patients. The ability to extinguish fear memory associations is impaired in PTSD individuals. As such, the development of extinction-enhancing pharmacological agents to be used in combination with exposure therapies may benefit the treatment of PTSD. Both mGlu5 and CB1 receptors have been implicated in contextual fear extinction. Thus, here we tested the ability of the mGlu5 positive allosteric modulator 3-Cyano-N-(1,3-diphenyl-1H-pyrazol-5-yl)benzamide (CDPPB) and cannabidiol (CBD) to reduce both conditioned and unconditioned fear. We used a predator-threat animal model of PTSD which we and others have …

Coarse Particulate Matter Exposure And Inflammation, Emilie Elizabeth Davis

Public Health Theses

Background Cardiovascular disease (CVD) is the leading cause of death in the United States, and environmental exposures, such as air pollution, contribute to the risk of CVD. While previous studies have found that fine particles, PM 2.5, are associated with CVD risk, fewer studies have considered the effect of coarse particles, PM 10-2.5, on CVD risk and the possible biological mechanism through which this environmental exposure could increase CVD risk. Methods This analysis examines the association between ambient concentrations of PM 10-2.5 and a marker of CVD risk in a cohort of midlife women. Annual questionnaire and clinical data were …

"The Hazards Of Being Free": Thinking About Not Thinking In Infinite Jest, Josh Cunningham

Dissertations and Theses

This paper is about self-consciousness and how it figures in David Foster Wallace’s Infinite Jest. Because Infinite Jest is such a large novel (1079 pages, including the indispensable footnotes), it serves, like other large novels before it, as a kind of encyclopedia of contemporary culture. The novel, in large part, treats self-consciousness—a distinctly human phenomenon, one which certainly accounts for our dominance as a species—as a problem (on both an individual and collective level) that needs to be overcome. This is because, as it turns out, self consciousness, when it becomes epidemic, is as much a boon as it …

A Consideration Of Kafka's Platonic Influences In The Trial, Shana N. Creaney Ms.

Dissertations and Theses

An analysis of Kafka's The Trial using the lens of Plato's Republic to re-analyze the character arc of Joseph K. What exactly does Kafka mean when he has K. die "like a dog"? Is it possible to see the ending as hopeful or optimistic rather than bleak?

"Beyond Consolation": Or Strangeness, Estrangement, And Strange-Ing In The Elegy For The Black Body, 1955-Present, Naomie Jean-Pierre

Dissertations and Theses

The Elegy for the Black Body examines the mid-twentieth to early-twenty-first-century poetic justice crafted by African American poets to eulogize individual African Americans whose deaths were the result of racial and political violence. In the age of lynching, mass shooting, and police brutality, I argue that an African American poetic tradition persists that, while not entirely beholden to the ancient elegy, is its distant relative, along with the English and American Elegy. I argue further that while the contemporary American elegy has undergone for the last six decades intensive study, from the notable studies done by Peter Sack’s in The …

La Cofradía De Artes Y Artesanos Hispánicos: 1978 To 1983 Redefining Tradition In The New Mexican Art Market, Ethel Mercedes Everett

Dissertations and Theses

La Cofradía de Artes y Artesanos Hispánicos: Redefining Tradition in the New Mexican Art Market. May 2019.

This master’s thesis explores the 1978 founding, existence, dissolve, and the legacy of the Santa Fe, New Mexican artist exhibition group, La Cofradía de Artes y Artesanos Hispánico (La Cofradía). La Cofradía was formed by six Santa Fe Hispano artists in reaction to creative limitations first imposed on Hispano artists in 1926, when the annual Spanish Market was formed. The Spanish Market was the sole arts sales venue available to Hispano artists in the exclusionary Santa Fe gallery and museum market. The Spanish …

Neuron-Glial (Ng) Interactions: A Microfluidic Examination Of Ng Emergent Responses For Repair, Tanya Singh

Dissertations and Theses

Neuron-glia communication is crucial to the development, plasticity, and repair of the nervous system (NS). While neurons are well known to conduct electrical impulses that transfer biological information and stimuli throughout the NS, our understanding of the roles of glia continues to evolve from when the cells were largely believed to act solely for neuronal support. Recent decades of research has shown that glia can alter metabolism, conduct impulses and change phenotype for NS repair. NG interactions have, thereby, become heavily researched in varied areas of biomedical engineering, including embryogenesis, neural regeneration, growth, and intracellular synaptic activity. However, while NG …

Controlled Migration Of Retinal Progenitor Cells Within Electro-Chemotactic Fields, Shawn Mishra

Dissertations and Theses

Vision loss in retinal degenerative diseases is overwhelmingly attributed to damage and death of retinal photoreceptor cells. Studies in mouse retina have suggested that transplantation of isolated post-natal or stem cell-derived retinal progenitor cells (RPCs) to replace apoptotic or damaged photoreceptors may be a novel approach to restore vision. Thus far, outcomes project that the amount of restored visual response depends upon the migration of transplanted cells from insertion in the sub-retinal space to the outer nuclear layer (ONL). However, transplantation efficiency is exceedingly low – ~5% cells transplanted enter the retina – directly limiting the efficacy of the treatments. …

Translational Modeling Of Non-Invasive Electrical Stimulation, Dennis Quangvinh Truong

Dissertations and Theses

Seminal work in the early 2000’s demonstrated the effect of low amplitude non-invasive electrical stimulation in people using neurophysiological measures (motor evoked potentials, MEPs). Clinical applications of transcranial Direct Current Stimulation (tDCS) have since proliferated, though the mechanisms are not fully understood. Efforts to refine the technique to improve results are on-going as are mechanistic studies both in vivo and in vitro. Volume conduction models are being applied to these areas of research, especially in the design and analysis of clinical montages. However, additional research on the parameterization of models remains.

In this dissertation, Finite Element Method (FEM) models of …

Janus Particles At The Air-Water Interface: Single Particle Behavior, Particle-Laden Interfaces, And Implications For Self-Assembly, Ellen Knapp

Dissertations and Theses

Recent advances in fabrication techniques have allowed for the synthesis of anisotropic Janus particles with precise control of the wetting properties on each hemisphere. Interfacial assembly of Janus particles is of particular interest as the anisotropy and amphiphilicity of these particles can be tuned in order to drive self-assembly and thus be used to template microstructures in a bottom up fashion. The ability to pattern particles at interfaces has a multitude of applications such as achieving films with tunable optical properties, making antireflective surfaces, improving the resolution of E-paper displays and creating water repellant materials. Furthermore, anisotropic particles at interfaces …

Characterizing Chromosomal Aberrations In Cells Deficient For Both Atm And Msh2, Yeliz Inalman

Dissertations and Theses

Ataxia telangiectasia mutated (ATM) and mutS homologue 2 (MSH2) are important DNA repair proteins that participate in DNA repair pathways to maintain genomic integrity. Mice deficient for ATM and MSH2 mice are viable. However, ATM^-/- mice show growth retardation, neurological defects, and spontaneous lymphomagenesis. MSH2^-/- mice suffer from aggressive lymphoid tumors between two to five months of age and have increased microsatellite instability, which predisposes MSH2^-/- mice to carcinomas. However, mice deficient in both ATM and MSH2 are unable to survive beyond postnatal day 21 (P21). The observed lethality in ATM^-/-MSH2^-/- mice may result …

Role Of Moa-1, An Anti-Phosphatase, And Apl-1, An App-Related Protein, In Morphogenesis And Mating Behavior In Caenorhabditis Elegans, Valerie C. Moscoso

Dissertations and Theses

Alzheimer's disease is a neurodegenerative disease that affects more than 30 million people globally. The disease is characterized by an accumulation of extracellular beta-amyloid peptide plaques and intracellular neurofibrillary tangles in the brain. The beta-amyloid peptide is derived from a larger precursor protein, the amyloid precursor protein (APP). Mutations in APP have been correlated with Alzheimer's disease. Due to the presence of two paralogues, APLP1 and APLP2, which have overlapping functions, the normal function of APP is difficult to elucidate. Knockout of the entire APP gene family in mice results in lethality and developmental defects, indicating that the APP gene …

Copper-Mediated N1-Arylation Of Benzotriazoles, Magdalena R. Andrzejewska

Dissertations and Theses

Benzotriazoles are group of bicyclic heterocyclic compounds that contain three nitrogen atoms fused to a benzene ring. Along with their derivatives, they possess a wide range of properties. They are used in medical field, as they exhibit such properties as antibacterial,antiplasmoidal,antiprotozoal, antifungal and anti-inflammatory activities, among others. They are also used in various industries as herbicides, UV absorbers, deicing and antiicing agents and corrosion inhibitors, to list a few. Because of their wide range of applications, we designed a new two-step synthesis for the formation of N-1-aryl benzotriazoles. 1-Hydroxy-1H-benzotriazole N-oxides were synthesized using phenylboronic acid (PhB(OH) …

Cyclophosphamide And Doxorubicin Contribute To Onset Of Chemobrain By Altering Epigenetic Factors Dnmt1, Dnmt3a, Tet1, Mecp2, And Cbp, Joshua Reiser

Dissertations and Theses

No abstract provided.

Mechanisms Of Microglia Mediated Apolipoprotien E Neurotoxicity, Pardeep Singh

Dissertations and Theses

No abstract provided.

Do Saproxylic Curculionids Affect The Fitness Of Co-Occurring Cerambycids?, Sheila R. Heath

Dissertations and Theses

Saproxylic insects sometimes coexist in incredibly high numbers under bark and share common resources. Thus, interactions between species are possible and could even explain their coexistence. This study investigates evidence of negative or positive effects of curculionid beetles (Coleoptera: Curculionidae) on cerambycid beetles (Coleoptera: Cerambycidae) that coexisted in dead tree branches in Costa Rica. Co-occurrence analysis and generalized regressions were used to test associations between cerambycid and curculionid species. Three cerambycid species that each co-occurred with a curculionid species were selected to measure fitness. Fitness measures of the cerambycid were compared with abundance of the co-occurring curculionid to assess the …

Reframing As Reclamation: Trauma Theory, African Spiritualism, And Ecocriticism In Jesmyn Ward’S Sing, Unburied, Sing, Alexandra Cohl Ms.

Dissertations and Theses

This thesis explores how ecocriticism and trauma theory intersect within Jesmyn Ward’s novel Sing, Unburied, Sing (2017) to tackle the complex act of collective healing. Trauma, and its subset transgenerational trauma, have often been a focal point for critical analysis of other African American texts that engage with ghosts and hauntings, such as Toni Morrison’s Beloved (1987). Often, these ghosts are symbolic of transgenerational trauma in fictional works. While this association is apparent in Ward’s novel, this thesis applies the aforementioned modes of scholarship alongside African-based spiritualism to investigate further the inclusion of ghosts. To accomplish this approach, this thesis …

"Dawn And Doom Was In The Branches": Eros Revisited In Zora Neale Hurston's Their Eyes Were Watching God, Fernando M. Duran

Dissertations and Theses

No abstract provided.

The Influence Of Size And Progression Of Intra-Cerebral Hematoma On The Lateral Ventricles, Muhammad J. Ashraf

Dissertations and Theses

Cerebrovascular diseases like intra cerebral hemorrhage are quite deadly and may disturb functioning of the brain, expanding and resulting in formation of an intra cerebral hematoma(ICH). It is imperative to comprehend how hematoma and its expansion inside the brain endangers human life. One of the influences of an ICH inside brain tissue is on the Lateral Ventricles(LV). When the hemorrhage occurs close enough to the lateral ventricles, filled with cerebrospinal fluid(CSF), it disrupts the balance of fluid in LV. A minor pressure change in LV can negatively influence the production of CSF as well as an increase in intracranial pressure. …

Literature Survey Of Wet-Waste And Hydrothermal Carbonization System: A Comparative Evaluation, Ramat Olaide Yusuf

Dissertations and Theses

This thesis describes the process of Hydrothermal carbonization and a comparative assessment on recent work done on the process using different feedstocks such as Raw Apple (RA), Apple chip pomace (ACP), apple juice pomace (AJP), grape pomace (GP), macadamia nut-shell (MNS), Sewage Sludge (SS), Poultry Litter (PL) and Grape Marc (GM). The data obtained from the literature survey was compared with the data obtained by the CCL team on the SWPS gasifier (HTC of poultry litter) to obtain how carbon conversion efficiency, syngas composition, thermal efficiency, char production rate, gas production rate and energy utilization vary with carbonization process conditions, …