Digital Commons Network^™

Rooftop Recipes For Relating: Ecologies Of Humans, Animals, And Life, Noha Fikry

Theses and Dissertations

This thesis explores the particularly lively rooftops of Cairo through which interspecies intimacies unfold. On these rooftops, various animals (such as chickens, ducks, geese, turkeys, goats, and rabbits) are raised to be later eaten and consumed for sustenance. Throughout the various thesis chapters, I try and expose the various patterned modalities, terms, and codes bringing these different species together in their sustained long-term relationships. I follow these interspecies relations as they narrate wonders of life-and-death, collaborations, various instantiations of home, social gift exchanges, marital rituals, and grieving patterns. These relations involve different tasks, requiring a very specific and complex gendered …

Genetic Diversity Comparison Among Invasive Fish Populations (Nemipterus Randalli And Serranus Cabrilla) From Mediterranean And Red Sea Coastal Waters Using Cytochrome C Oxidase Subunit I (Coi), Joel Ogwang

Theses and Dissertations

Since the Suez Canal connected the Red Sea with the Mediterranean, several fish species have migrated between the two seas. Nemipterus randalli has crossed from the Red Sea to the Mediterranean (Lessepsian migration) whereas Serranus cabrilla is considered to have crossed in the reverse direction (anti-Lessepsian migration). Genetic variation between populations of these fish species on either side of the Suez Canal might provide valuable information on their patterns of migration. In this study, 600 bp of cytochrome c oxidase subunit I (COI) sequences were used to compare genetic diversity of populations of N. randalli from the eastern Mediterranean with …

Exploring Higher Education Policy Reforms In Different Contexts: A Comparative Study Of Australia, Canada And Egypt., Eman Mahmoud Abdel-Tawab

Theses and Dissertations

This study is concerned with exploring higher education policy and reforms enacted by three diverse countries, Australia, Canada, and Egypt, to improve the quality of education and its relevancy to job market needs. The purpose of this study is to develop a better understanding of similarities and differences in context and motivations for reform and the subsequent results across the three countries and thus identify the lessons learned. This, in turn, will provide an answer to the prominent question of how can Egypt benefit from the higher education reform journeys undertaken by Australia and Canada. The study employs a “simultaneous …

A Study Of Catalytic Microcombustion For A Portable Power Supply Device, Bhanuprakash Reddy Guggilla

Theses and Dissertations

The essential need for portable and dense power sources has been greatly increased with the prevalence of portable electronic devices in the past decade. Catalytic combustion of hydrocarbon and oxygenated fuels has the potential to provide an alternative power source for portable electronic devices by replacing relatively today's heavy battery technology. A successful self-ignition and sustainable catalyst combustion for a variety of fuels using Platinum (Pt)-impregnated substrate was demonstrated in our previous work.

Present work explores the performance of a microcombustion thermoelectric coupled (MTC) device with improved reactor configuration design. Chemically synthesized platinum nanoparticles with particle diameters of approx. 8 …

Exploring Microaggressions Among Trans Populations: Effects On Feelings Of Social Exclusion, Stephanie M. Aubuchon

Theses and Dissertations

Those who identify as transgender face subtle discrimination in the form of microaggressions, which are behaviors and statements, often unconscious or unintentional, that communicate hostile or derogatory messages, particularly to members of marginalized social groups (Nadal et al., 2016). This study explored the microaggressions that transgender participants experience and the psychological effects on their feelings of social exclusion. Specifically, we hypothesized that transgender individuals experience microaggressions that make them feel socially excluded. The participants’ ages ranged from 18-66 and identified as nonbinary, agender, demiboy, genderqueer, male, or female. The study used an online survey that had the participants recall memories …

Development Of A Novel Electroless Plating Approach For Coating Aluminum (Al) On Multi-Walled Carbon Nanotubes (Mwcnts) And Investigating Their Use In Reinforcing Cast And Powder Compacted Aluminum Composites, Mohammed Elsharkawi

Theses and Dissertations

Due to their superior mechanical properties, Aluminum-Carbon Nanotube (Al-CNT) composites have been widely investigated by various researchers using several processing techniques. One of the most successful techniques in creating Al-CNT composites is the ball milling technique followed by hot compaction and hot extrusion for powder consolidation. However, this technique has some drawbacks including the limited design flexibility of the produced parts, the high initial cost of milling equipment, and the damage of CNTs during milling that has been reported to take place due to the harsh impact of milling balls on CNTs leading to the formation of brittle Al4C3 phases …

Evaluating The Bioactivity And Biocompatibility Of Nylon Coated Ultra-High Molecular Weight Polyethylene (Uhmwpe), Nancy Hassanein

Theses and Dissertations

Ultra-high molecular weight polyethylene (UHMWPE) semi crystalline biomaterial is one of the gold standard materials that are used as a bearing surface in total joint replacement surgeries. However, wear particles generated by UHMWPE due to the relative motion between the different components of the bearing, would eventually result in osteolysis and implant failure. For this, many attempts to enhance the properties of UHMWPE were done, including coating the UHMWPE with nylon 6,6 which was reported to improve its mechanical properties and biocompatibility. In this study, the antibacterial activity, moisture and SBF absorption, pH effect, bioactivity, biocompatibility and wound healing ability …

Fabrication Of Electrospun Nanofibers Made Of Watermelon Peel Extract And Pva And Investigating Their Antioxidant And Antibacterial Activities, Wafaa Soliman

Theses and Dissertations

Food waste has become a huge problem globally since thousands of different food items are wasted all over the world which affects our environment severely due to the emissions of greenhouse gas due to anaerobic decomposition and leakage at the garbage. Fruit wastes like the peels and seeds are a major contribution to the waste products thrown everyday especially in juice industries. The antioxidant and antimicrobial activities of food wastes have been of great interest nowadays due to oxidative stress and antibiotic resistance problems. However the stability of the fruits or vegetables wastes was a challenge to perform these activities …

Dress Up, Ye'ela B. Wilschanski

Theses and Dissertations

Dress Up (Performance, 40 minutes) is a dress that functions as a floor, blanket, tablecloth, book and walls. It tells a visual story about domestic care giving rituals, referencing different times and places.

Reconstructing The Demographic History Of The Critically Endangered Black-And-White Ruffed Lemur (Varecia Variegata) In Ranomafana National Park, Aparna Chandrashekar

Theses and Dissertations

Due to heavy fragmentation of their remaining range, the Critically Endangered black-and-white ruffed lemur (Varecia variegata) is facing catastrophic population declines. Skyline analyses at Ranomafana National Park show the ruffed lemur effective population size declining by 84% starting around 1,500 years ago.

Hrísheimar: Fish Consumption Patterns, Wendi K. Coleman

Theses and Dissertations

In this thesis, I examine the fish remain patterns at Hrísheimar, which have provided archaeologists with further evidence that inland sites such as those in the Mývatnssveit Region utilized both local freshwater and marine fish from the coastal regions as a part of their subsistence pattern.

Examining Effects Of Parental Sexual Abuse On Female Juvenile Delinquency Using A Social Developmental Perspective, Michelle Nagle

Theses and Dissertations

Delinquency has traditionally been viewed as a male phenomenon, often defined in androcentric terms, and neglecting females in studies regarding delinquent behavior. However, females are the fastest growing subpopulation of the correction population, which amplifies the importance of understanding the nature and etiology of their offending. Recent research has suggested that predictors of male juvenile delinquency do not adequately explain delinquency in females, because the androcentric research ignores the damaging impact of sexual childhood abuse and other prominent family factors on female juvenile delinquents. This study aimed to examine the impact of childhood parental sexual abuse on female juvenile delinquency …

Intranasal Delivery Of Insulin By Nanoemulsion System, Darshana Mahendrakumar Shah

Theses and Dissertations

The main objective of this research was to develop an o/w nanoemulsion dosage form of insulin for intranasal delivery where insulin is loaded into the oil phase of the nanoemulsion for enhanced absorption. When loaded into the lipid droplets (oil phase), insulin can be protected from enzymatic degradation, can permeate through the mucus gel barrier in a comparatively efficient manner and can be absorbed through transcellular permeation along with paracellular route. To incorporate lipophilicity to insulin molecule, several complexes of insulin with various amphiphiles were developed to load it into the oil phase. The cytotoxicity of these amphiphiles and the …

Përdorimi I Rrjetave Neurale Në Gërmimin E Të Dhënave, Abdylkadri Maksuti

Theses and Dissertations

Për një kohë të gjatë kompani apo biznese të ndryshme kanë mbledhur të dhëna të shumta të fushave të ndryshme. Shumë pak kompani apo biznese janë në dijeni për vlerën e këtyre të dhënave që mund të iu ofrojnë përfitime shumë të mëdha. Kështu që përmes teknologjive të ndryshme sic janë: gërmimi i të dhënave, rrjetat neurale ku kanë algoritme dhe teknika të ndryshme është arritur mundësia për ti nxjerrur këto të dhëna. Kështu që në ditët e sotme kanë marrur hov shumë të madh këto teknologji të cilat janë shumë të ndërlikuara.

Përmes kësaj teme diplome sqarohen se cka …

Explainable Neural Networks Based Anomaly Detection For Cyber-Physical Systems, Kasun Amarasinghe

Theses and Dissertations

Cyber-Physical Systems (CPSs) are the core of modern critical infrastructure (e.g. power-grids) and securing them is of paramount importance. Anomaly detection in data is crucial for CPS security. While Artificial Neural Networks (ANNs) are strong candidates for the task, they are seldom deployed in safety-critical domains due to the perception that ANNs are black-boxes. Therefore, to leverage ANNs in CPSs, cracking open the black box through explanation is essential.

The main objective of this dissertation is developing explainable ANN-based Anomaly Detection Systems for Cyber-Physical Systems (CP-ADS). The main objective was broken down into three sub-objectives: 1) Identifying key-requirements that an …

A Teacher’S Adoption Of Maker-Centered Learning: A Phenomenological Case Study, Michael L. Schad

Theses and Dissertations

The maker movement is a social movement which espouses the importance of artifact creation through physical and digital tools. As the maker movement moves into educational spaces, researchers and educators are exploring ways to integrate it alongside current classroom practices. A prevalent framework for maker integration is the maker-centered learning framework, which was used as part of the conceptual framework. Currently, more research is needed which justifies and analyzes maker-centered learning in an educational environment. This study aimed to use phenomenological methods to capture the lived experience of chemistry teacher as she integrated the maker-centered learning framework into her chemistry …

Applications Of Chemically Modified Nitrogen Doped Carbon, Zirconium Phosphate, Metal Organic Frameworks, And Functionalized Graphene Oxide Nanostructured Adsorbents In Water Treatment, Ayyob Mohammed A Bakry

Theses and Dissertations

Water contaminations by many pollutants, especially heavy metals such as Pb(II), Hg(II), Cu(II), Cd(II), and Cr(VI) pose many public health and environmental concerns as reported in the list of hazardous substances compiled by the US Environmental Protection Agency due to their high toxicity, refractory degradation, and ease of entering food chain. Adsorption by chelating resins is proven to be the most effective method for the extraction of metal ions from polluted and wastewater. However, traditional absorbents such as activated carbon, activated alumina, clay, zeolite, etc., show limited adsorption abilities for these heavy metal ions. The major goal of this thesis …

Carbon Cycling Along The James River Continuum, Timothy B. Jones

Theses and Dissertations

Fluvial systems act as conduits for terrestrial carbon transport to coastal oceans. However, riverine systems not only transport allochthonous carbon, they transform and store carbon in many different ways. The different mechanisms of transformation and storage need to be considered for fluvial systems in order to accurately account for modifications to the carbon pool when developing carbon budgets. Of interest was to investigate the carbon dynamics in the James River, in Virginia, from headwaters to the tidal fresh estuary to gain a better understanding of carbon dynamics along the continuum. Sites along the river continuum were sampled for dissolved organic …

Touched With All The Radiance That A Sudden Sun Discloses, Marie Fornaro

Theses and Dissertations

The thread running through my work is a constant impulse to rend and repair; to make, unmake, and remake. This repetitive and circular approach allows me to confront the cyclical nature of gendered oppression. What does it mean to make something beautiful and then to dismantle it? How do we reckon with the pieces that remain? By deconstructing the beautiful and lovingly crafted objects that I spend hours making, I recenter “craft” as a verb rather than a noun, forcing myself and my audience to resist the comforting illusion of certainty.

I contextualize my piecework and quilting in a long …

Trauma Related Drinking To Cope: A Phenotypic And Molecular Genetic Investigation Of The Self-Medication Model, Sage E. Hawn

Theses and Dissertations

Posttraumatic stress disorder (PTSD) and alcohol use problems (AUP) commonly co-occur, have shared latent genetic risk, and are associated with many negative public health outcomes. Via a self-medication framework, trauma-related drinking to cope (TRD), an unexplored construct to date, may help explain why these two disorders co-occur, thus serving as an essential target for treatment and prevention efforts. The present study aimed to create a novel measure of TRD and examine its psychometric properties, investigate its indirect influences on the association between PTSD and AUP, as well as explore its potential shared molecular genetic risk with PTSD in a genetically-informative …

The Anaplasma Phagocytophilum Adhesin Asp14 Directs Pdi-Mediated Disulfide Reduction To Promote Infection, Ryan S. Green

Theses and Dissertations

Obligate intracellular pathogens must invade host cells to survive and pose a global health risk. As such, internalization is a critical life stage and represents an excellent therapeutic target. Oxidoreductase exploitation is a thematic invasion strategy among obligate intracellular pathogens. Delineating the mechanisms and proteins mediating this exploitation could identify novel therapeutic targets for many important pathogens. Anaplasma phagocytophilum infects neutrophils by an incompletely defined mechanism, resulting in the emerging potentially fatal disease, human granulocytic anaplasmosis. The bacterial adhesin, Asp14, contributes to invasion by virtue of its C-terminus engaging an unknown receptor. Yeast two-hybrid analysis identified protein disulfide isomerase (PDI) …

Regorafenib Enhances Lethality Of Sildenafil And Curcumin In Colorectal Cancer Cells, Kervin Benjamin Owusu

Theses and Dissertations

In the United States, more than 130,000 people will be diagnosed with colorectal cancer (CRC) each year and an estimated 50,000 people will die from the disease. Standard of care (SOC) therapies for CRC combine multiple cytotoxic chemotherapeutic drugs. These combinations have varying degrees of effectiveness and can often result in significant patient morbidity. For second recurrence patients, the multi-kinase inhibitor, regorafenib, is an approved agent, but is often poorly tolerated at current doses. In the current study, we propose to develop therapeutic regime of combining agents with modest toxicity profiles: curcumin and sildenafil with regorafenib. Using clinically achievable enterohepatic …

Pharmacologic Profiling Of Novel Compounds Via Fluorometric Analyses Of Monoamine Transporter Responses, Ashkhan Hojati

Theses and Dissertations

In humans and other organisms, monoaminergic systems are crucial in neuronal function and behavior. The monoamine transporters (MATs), which can be found on the presynaptic plasma membrane of neurons in the central nervous system (CNS), are crucial in the regulation of neurotransmitter concentration in the synaptic cleft. As the duration and concentration of neurotransmitters in the cleft affect further downstream signaling responses, these proteins are important targets for both understanding neuronal physiology and compounds of interest. Multiple theories exist proponing the contribution of MATs to a variety of mental and neurological disorders, including depression. This theory establishes that depression is …

Examining Biobehavioral Variables And Predictors Associated With Type 2 Diabetes Self- Management, Karin A. Emery

Theses and Dissertations

Type 2 diabetes mellitus self-management is a challenging process that brings forward a variety of emotional responses. The purpose of this work was to explore relationships between diabetes distress, self-efficacy and resilience and outcomes of glycosylated hemoglobin, quality of life and health status. A cross sectional descriptive design was used for this pilot study of 78 individuals enrolled from an Endocrine clinic in the Midwest United States and a Primary Care clinic in the southeast United States.

Data were analyzed using descriptive statistics to characterize the sample and model variables. Spearman’s correlation was completed to identify relationships among variables. A …

Inhibition Of Cancer Stem Cells By Glycosaminoglycan Mimetics, Connor P. O'Hara

Theses and Dissertations

Connor O’Hara July 29, 2019

Inhibition of Cancer Stem Cells by Glycosaminoglycan Mimetics

In the United States cancer is the second leading cause of death, with colorectal cancer (CRC) being the third deadliest cancer and expected to cause over 51,000 fatalities in 2019 alone.¹ The current standard of care for CRC depends largely on the staging, location, and presence of metastasis.² As the tumor grows and invades nearby lymph tissue and blood vessels, CRC has the opportunity to invade not only nearby tissue but also metastasize into the liver and lung (most commonly).³ The 5-year survival rate …

Factors Influencing Parental Care And Home Range Size Of A Monomorphic Species, The Red-Headed Woodpecker (Melanerpes Erythrocephalus), L. Abigail Walter

Theses and Dissertations

Parental care in animals can be costly and is shared between both parents in many bird species. Not surprisingly, most studies of how parental care is shared between the sexes are in sexually dimorphic species, and much less in known about sexually monomorphic species where sex cannot be determined in the field. This has prevented a full understanding of parental care behaviors – which are intrinsically linked to fitness – in species such as the Red-headed Woodpecker (Melanerpes erythrocephalus) that is experiencing population declines throughout much of its range. In this study we assessed whether Redheaded Woodpecker brooding time, nestling …

Role Of Glial Ccr5 In Mediating Hiv-1 Tat And Opiate Neurotoxicity And Behavioral Phenotype, Sarah Kim

Theses and Dissertations

Human immunodeficiency virus type 1 (HIV-1) persists in certain CNS cell populations, despite peripheral control of the infection with modern antiretroviral therapy. Infected and/or activated cells release viral proteins, such as trans-activator of transcription (Tat) and various pro-inflammatory factors such as CCL5, creating a positive loop of neuro-inflammation. This serves as the basis for the resulting sublethal and lethal neuropathology that manifests as a spectrum of HIV-mediated CNS impairments, known as HIV-associated neurocognitive disorders (HAND). Opiates, which exist as an interlinked epidemic with HIV-1 infections, exacerbate these neurological effects through direct and indirect mechanisms that disrupt both glial and neuronal …

Structural Determinants Of High Potency Mdpv Inhibition Of The Dopamine Transporter, Tyler Steele

Theses and Dissertations

Monoamine transporters (MATs) are a unique group of neurotransmitter transporters that include the dopamine, serotonin, and norepinephrine transporters (DAT, SERT, and NET, respectively). MATs are a target for a number of licit and illicit compounds. The significance of this work lies in the fact that these transporters share affinity for certain ligands to varying degrees, but the structural features within the transporters that govern the observed selectivity for these ligands has not been completely determined. One such ligand is methylenedioxypyrovalerone (MDPV), which was frequently found in “bath salts” preparations that were available in convenience stores and were sold with “not …

The Role Of Psychosocial And Health Behavioral Factors In Pregnancy Induced Hypertension, Sylvia Sreeparna Rozario

Theses and Dissertations

Background: Pregnancy induced hypertension (PIH) is the leading cause of maternal mortality and a major contributor to preterm birth and neonatal mortality. Literature suggests that several modifiable psychosocial and health behavioral factors may play significant roles in the development of PIH. However, interrelationships among these factors and their collective impact on PIH are not well understood.

Objectives: This study aims to: 1) Examine the relationship between pre-pregnancy physical activity and risk of PIH, 2) Determine the association between prepregnancy depression and PIH and the role of race/ethnicity in this association, 3) Evaluate the association between intimate partner violence (IPV) in …

Conceptualization Of Body Image And Eating Disorders Among South Asian American Women: A Qualitative Investigation, Neha J. Goel

Theses and Dissertations

Though it is known that eating disorders (EDs) affect individuals of all racial/ethnic backgrounds (Cheng, Perko, Fuller-Marashi, Gau, & Stice, 2019), people of color tend to be overlooked in the ED literature. South Asian Americans, a specific subset of individuals traditionally categorized within the larger umbrella group of “Asians,” have been notoriously neglected in both the broader mental health literature, and in the ED literature (Inman, Devdas, Spektor, & Pendse, 2014; Iyer & Haslam, 2003, 2006). Currently, very little information exists on the etiology and presentation of EDs amongst South Asian communities. Even less is known about culturally-specific barriers to …