Digital Commons Network^™

Effect Of Pre-Growth Conditions On Foodborne Pathogen Survival Kinetics In Fresh Produce, Avninder Kaur

Theses and Dissertations

World-wide consumption of fresh-cut produce has seen a dramatic increase over the past few decades. However, fresh-cut produce has been implicated in several illness outbreaks due to contamination with foodborne bacterial pathogens. Post-harvest contamination during handling and processing is considered rare but several influencing factors are often overlooked. Specifically, studies have reported the growth, survival, and death kinetics of foodborne bacterial pathogens such as E. coli O157: H7, Salmonella and Listeria monocytogenes in different fresh and fresh-cut produce. The effect of various factors such as storage temperature, time, and relative humidity are widely explored. It is increasingly evident that microbial …

The Effects Of Caffeine On Activity Levels And Motor Behaviors In The Honeybee, Apis Mellifera, Johana Castro

Theses and Dissertations

Caffeine is produced by plants as a defense mechanism against herbivores and pathogens. However, caffeine was found in floral nectar, which contradicts nectar's role in attracting pollinators. Interestingly, low concentrations of caffeine were shown to increase alertness and locomotion in mammals and invertebrates, indicating it may enhance the productivity of pollinators. This investigation examined how caffeine affects activity levels and motor behaviors in the honey bee, Apis mellifera. To test overall activity, forager bees were collected and fed 1 M sucrose to satiation. The following day, bees received 10 µl of 1.0 M sucrose alone or with caffeine ranging from …

The Effects Of Ketones On Brain Metabolism And Cognition, Erin Reiko Saito

Theses and Dissertations

The brain is one of the most energetically demanding organs within the human body and is cognitively susceptible to energetic deficits such that the rise in obesity, insulin resistance, and Alzheimer’s disease in recent decades pose a substantial threat to cognitive longevity. The therapeutic efficacy of ketones are well-established in epilepsy and are currently being applied to other disease states. Alzheimer’s disease is characterized by impairments in brain glucose uptake and metabolism in regions relevant to learning, memory, and cognition that progress with the disease. While brain glucose uptake is impaired, ketone uptake is unaltered, potentially enabling ketones to fuel …

Effects Of Parenting And Self-Efficacy On Diet, Family Mealtime And Weight-Related Outcomes In African American Adolescents, Haylee Michele Loncar

Theses and Dissertations

Despite substantial research and concern, adolescent overweight and obesity continues to be a significant public health problem. Theory based on developmental literature emphasizes the role of adolescent self-regulatory factors, like self-efficacy, in health behavior engagement and weight-related outcomes. There is also extensive literature that highlights parents’ role in promoting self-regulatory development through warm and responsive behaviors and practices. However, few studies have considered longitudinal associations and changes in weight-related outcomes over time, as well as moderated effects by parenting. This study assessed longitudinal associations between adolescent self-efficacy parenting factors and adolescent BMI, diet, and family mealtime to fill gaps in …

The Impact Of A Literacy Program On Summer Reading Setback: Providing Access To Books And Project-Based Learning, Tiffany Gayle Robles

Theses and Dissertations

This action research study examined the impact of a summer literacy program on summer reading setback. Gaining Ground is a summer intervention program designed primarily for economically disadvantaged students in Grades K–5. By granting access to self-selected books and implementing project-based curriculum, Gaining Ground aims to improve reading proficiency during the summer break. Faucet theory illuminated the challenge of reaching and maintaining proficiency over break, and constructivism and self-determination theory framed the program’s efforts to resolve this problem.

As the curriculum director, I used mixed methods to assess Gaining Ground’s impact. Quantitative methods revealed maintenance, improvement, or decline in student …

Online Information-Seeking And Cancer Screening Intention: An Analysis Of The Health Information National Trends Survey 2022, Rachel Aileen Ford

Theses and Dissertations

Online information-seeking has become common in modern life, including when patients search for health information to make informed healthcare decisions. Previous research into the effect of online information-seeking on health maintenance behaviors has been mixed. This study sought to expand the current literature concerning the online information-seeking habits of cancer patients and integrate the concept of competence to analyze the effect on cancer screening adherence. The study analyzed HINTS 6 data to examine the relationship between online information-seeking and cancer screening intention as well as the relationship between social media habits and cancer beliefs. Results showed support for competence resulting …

The Impact Of Covid-19 On Psychosocial Services And Perceived Supports For Pediatric Patients, Samantha Martinez

Theses and Dissertations

In March 2020, the World Health Organization named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) a global pandemic. While the physiological damage of COVID-19 on individuals and communities is itself immeasurable, both because variants continue to spread and because of the unpredictable nature of “long COVID,” we know even less about the long-term psychological impacts on individuals. Lockdown procedures, including school closures, were necessary to prevent transmission of the virus and to protect the most vulnerable bodies (namely, the elderly and immuno-compromised). However, the effect of the closures disproportionately resulted in psychological damage to children and adolescents. Previous studies have …

Babe (Body Appreciation And Better Eating), Just Add A Dash Of Self-Compassion: A Randomized Controlled Pilot Study For Black/African American Teenage Girls, Nkechi Bianca Okpara

Theses and Dissertations

Introduction

Body dissatisfaction contributes to disproportionately high rates of disordered eating behaviors observed in Black teenagers. Given that self-compassion is found to buffer against eating pathology and body dissatisfaction and is linked to reduced incidences of binge eating and disordered eating behavior. Incorporating the self-compassion construct, specifically centering on nutrition, with a program that combats negative body image, like the Body Project, may further help decrease body dissatisfaction and improve overall nutrition.

Purpose

The aim of this dissertation was to test (1) the acceptability and feasibility of a novel program, Body Appreciation and Better Eating, add self-compassion (BABE+SC), and to …

Unlocking Population-Specific Treatments To Render Equitable Approaches And Management In Cardiovascular Disease (Upstream Cvd): African American Emerging Adults, Shannon Bright Smith

Theses and Dissertations

Cardiovascular disease (CVD) is the leading cause of death in America. African American people have disparate CVD outcomes, and African American emerging adults (AAEAs) aged 18-25 have CVD risk factors. This study aimed to examine the state of CVD risk factors in AAEAs, assess upstream and population factors in AAEAs attending a southeastern historically black college/university (HBCU), compare their perceived and objective CVD risk, explore their level of CVD knowledge, and examine responses when they learn their objective CVD risk.

Chapter 1 presents background literature on CVD in AAEAs and the research plan. Chapter 2 presents a newly synthesized situation-specific …

Academic Impacts Of Intergenerational Trauma: Assessing The Relationship Between Ace Scores Of Parents And The Language And Literacy Development Of Their Elementary-Aged Children, Paige Lee Banaszak

Theses and Dissertations

This paper contributes to the current literature by investigating factors that may contribute to language and literacy difficulty among children, to support the future development of effective intervention techniques. The data analyzed in this paper was collected from children and families participating in Reach Every Reader, a research study currently being conducted to improve literacy outcomes in the U.S. by developing a computer-adaptive screening assessment tool to identify children at risk for language and literacy difficulties early in their educational development. Children enrolled in kindergarten through third grade completed tasks that target language and literacy skills, and their parent(s) completed …

The Role Of Environmental Context In Supporting Children’S 24- Hour Movement Behaviors; A Positive Deviance Perspective, Roddrick Dugger

Theses and Dissertations

Background: During summer, children display less favorable movement behaviors than the school year. To investigate the role of environmental context in supporting children’s ability to meet the 24-hour Movement Guidelines (i.e., Moderate-to-Vigorous Physical Activity: ≥ 60 minutes, Sleep duration: 9-11 hours, Screen Time: ≤ 2 hours), this dissertation had three primary aims: 1) Utilize the Positive Deviance Framework to identify unique practices and resources that enabled children to meet guidelines, 2) Examine potential associations between the neighborhood built and social environment with movement behaviors by household poverty experience, and 3) Identify specific features of the family and home environment that …

Leveraging Church Environments To Promote Rural Physical Activity And Healthy Eating, Kelsey Rothera Day

Theses and Dissertations

Rural residents experience a greater burden of chronic disease related to physical inactivity and poor diet than their urban counterparts. A promising strategy to improve these health behaviors in rural areas is to leverage existing structures that may support physical activity and healthy eating, such as churches, in public health interventions. Three studies were conducted as part of this dissertation. They were designed to: 1) examine whether the walkability and healthy food density of neighborhoods surrounding rural and urban churches are associated with race, socioeconomic status, and rural/urban status; 2) examine rural church leaders’ views on the role of faith-based …

Sleep, Physical Activity, And Sedentary Time In The First Year Postpartum, Erin Elizabeth Kishman

Theses and Dissertations

The postpartum period is a unique time for women, where many women experience changes in sleep and activity patterns. Sleep, physical activity, and sedentary time have all been associated with health outcomes, but there is limited research on how these behaviors change throughout the postpartum period. The purpose of the first aim (Study 1) of this dissertation was to examine trajectories of sleep characteristics in Black and White women during the first year postpartum and to examine if there were any racial differences. The purpose of the second aim (Study 2) was to examine trajectories of the percentage of time …

Prenatal Depression And Breastfeeding Practices Healthy Start Participants, 2019-2022, Peyton Ashleigh Mosher

Theses and Dissertations

Background: Breastfeeding has health benefits for both mother and child, but breastfeeding practices among Black and lower-income women are the poorest in the United States. Few studies have examined the associations between maternal prenatal depression and breastfeeding duration, even fewer among a predominantly low-income Black population. Objective: To explore the association between prenatal depression and breastfeeding practices among low-income Black women during the COVID-19 pandemic.

Methods: Prospective cohort data from Midlands Healthy Start (MHS) was analyzed to examine women’s depression symptoms during pregnancy and their breastfeeding initiation and duration through two and six months. Perinatal depressive symptoms were identified using …

Comorbid Adhd And Pediatric Sickle Cell Disease: Prevalence And Risk Factors, Sarah Bills

Theses and Dissertations

Objective: Sickle cell disease (SCD) is a genetic blood condition that places youth at increased risk for deficits in attention and executive functioning suggestive of increased rates of Attention Deficit/Hyperactivity Disorder (ADHD). There is pronounced inconsistency in reported prevalence rates for attention deficits and ADHD diagnoses among youth with SCD, which is due in part to variability in methodology of previous studies. The primary aim of the present study is to use systematic screening to identify the prevalence of inattentive ADHD symptoms and ADHD diagnoses in a pediatric SCD population seen at a large hematology clinic. A secondary aim is …

Complementary And Integrative Health (Cih) And Opioid Use Among Adults With Chronic Noncancer Pain In The Us, Yi-Wen Shih

Theses and Dissertations

Chronic noncancer pain (CNCP) is defined as persistent pain lasting for more than three months due to conditions other than malignancy. This condition affects one in five American adults annually. The prescribing of opioids to individuals experiencing CNCP has been recognized as a critical contributor to the ongoing opioid crisis. In 2016, the Centers for Disease Control and Prevention (CDC) recommended Complementary and Integrative Health (CIH) as a nonpharmacologic treatment to be used among adults with CNCP. Despite the potential benefits of CIH for pain relief, there may be a discrepancy between individuals with CNCP and their insurance coverage for …

The Effects Of Variations In Light And Nutrient Availability On Phytoplankton And Zooplankton, Jake Anthony Swanson

Theses and Dissertations

Aquatic ecosystems experience a wide range of variation in resource availability; two of the resources that are most essential to phytoplankton and zooplankton are light and nutrients. Light can vary in both its color and intensity; these variations can directly impact phytoplankton by altering the amount and color of light available for photosynthesis. Nutrient variability, particularly increases in nutrient levels, also alter phytoplankton communities by favoring the growth of certain taxa such as cyanobacteria.

To understand whether phytoplankton respond differently to changes in light availability I investigated whether the diversification of cryptophytes, phytoplankton with diverse light-capturing pigments, showed evidence of …

Feasibility Of A Parent-Focused, Stress Management Intervention To Decrease Adolescent Bmi, Reduce Stress, And Increase Well-Being Among African American Families, Colby J. Kipp

Theses and Dissertations

African American adolescents in the United States experience a higher prevalence of obesity as compared to their White counterparts. This health inequity presents a public health concern as consequences of weight-related chronic diseases often persist into adulthood and are increasingly problematic. As chronic stress has been found to be higher among African American youth compared to White adolescents, it presents as a potential barrier to participation for African American families in health promotion interventions. Additionally, it may be beneficial to target stress in health promotion programs as a modifiable factor in conjunction with health behaviors that may improve outcomes related …

The Effects Of Technology Integration On Academic Performance And Engagement Of Third Grade Social Studies Students: A Mixed Methods Study, Ashley Megregian

Theses and Dissertations

The purpose of this study was to evaluate the impact of technology integration on third grade social studies students' academic performance and their engagement with the content of map skills at Peony Elementary. The study took place during the Fall of 2022 with 14 third grade social studies students. There is low academic performance and a lack of engagement from elementary students both nationally and locally. This research explored three questions related to the effects of integrating technology on student academic performance and engagement. The first question looks at the impact of integrating technology on third grade students’ academic performance …

Effects Of Caffeine On Measures Of Clinical Outcome And Recovery Following Mild Traumatic Brain Injury In Adolescents, Jacob Michael Eade

Theses and Dissertations

OBJECTIVE: The overarching purpose of this study was to investigate the influence of habitual caffeine consumption on mTBI outcomes in adolescents. BACKGROUND: Adolescents who suffer an mTBI have an increased risk for neurological impairment and symptomology. Thus, it is important to elucidate modifiable lifestyle factors that have the potential to influence injury outcomes and recovery. Caffeine is a legal psychoactive compound prevalent among the adolescent population. Marketed as an ergogenic aid caffeine coincides with recreational activities where incidence of mTBI is high. However, no human study has explored the influence of caffeine consumption on mTBI pathology. It was hypothesized that …

Metabolomics Unveiled: Decoding Platelet Dynamics In Smokers, And Head-Neck Cancer Patients, Anthony Nasr Tanios

Theses and Dissertations

This study aimed to investigate the metabolomics profiles of platelets in smokers and head and neck cancer patients compared to normal healthy donors. This study analyzed the metabolomics profile of the platelets from smokers and cancer patients compared to healthy individuals. Samples were collected and processed by the research group of Prof. Dr. Barbara Wollenberg at the Klinikum Rechts der Isar-Technical University of Munich. The data analysis was performed at the Technical University in Munich (TUM). Untargeted metabolomics profiling was conducted using both hydrophilic interaction liquid chromatography (HILIC) and reverse-phase (RP) chromatography in both positive and negative ionization modes. This …

High-Risk Fertility Behaviors: Impact On Child And Risks Of Maternal Mortality In Kenya, Mercy Chepkosgei Kiprop

Theses and Dissertations

Rapid population increase in Sub-Saharan Africa (SSA) over the last several decades and limited healthcare interventions have exacerbated child and maternal mortality. The maternal mortality ratio (deaths per 100,000 live births) in Sub-Saharan Africa accounts for at least 50 percent of maternal deaths globally. In 2020 alone, 5 million children under 5 years died in Kenya. Research also points out that, tragically, many of the mothers and children died of preventable or treatable conditions. Previous research has focused on biological or socioeconomic determinants of child mortality rather than their joint influences. In this study, we investigate the premise that all …

Primary Care Provider Density And Social Ecological Factors Related To County-Level Diabetes Prevalence In The United States, Robert Alan Kemsley

Theses and Dissertations

Diabetes is a critical public health concern with considerable financial and personal costs in the United States. Research has identified several interventions available to primary care providers to prevent diabetes. These interventions may prevent diabetes by influencing personal, community, and public health policy factors. These factors are key components of the social ecological model, which examines the influence of diverse social influences on health. Therefore, the purpose of this study was to determine the univariate relationship between PCP density and diabetes prevalence, as well as the multivariate relationship between PCP density and diabetes prevalence with physical inactivity prevalence, obesity prevalence, …

Differential Levels Of Nutrients And Heavy Metals In Tilapia Collected From Drains In Egypt, Emily Burch

Theses and Dissertations

Tilapia is one of the most widely cultivated and consumed fish globally. In terms of human health, tilapia is an excellent source of protein, polyunsaturated fatty acids, and micronutrients. Tilapia and other aquatic species have become increasingly susceptible to contamination, as anthropogenic activities have been increasing around the world. Anthropogenetic activities often introduce high levels of contaminants, including heavy metals, into the marine environment. These contaminants often do not biodegrade, and they are absorbed by aquatic species. Contaminants can bioaccumulate and proceed in biomagnification up the fish food chain putting consumers at an increased risk of exposure. Heavy metals can …

Nutrient Optimization For Vegetable Production Under Decoupled Aquaponics Using Brackish Water, Salma Walid Hany Ahmed Abdelfattah

Theses and Dissertations

As the world moves to more sustainable agriculture methods in the agribusiness industry, decoupled aquaponics is recognized as one of the newest techniques currently being utilized to achieve more local food security. As the topic is still freshly new within the industry, a finite number of publications and studies have been made that address the topic hands-on with its many variables. Subsequently, in this paper, an experiment was conducted to assess the most optimized production conditions of both lacinato kale (Brassica oleracea var.palmifolia) and Swiss chard Bright Light (Beta vulgaris ssp. Cicla var. flavescens) plants through the utilization of a …

The Sidelined Front-Liners: Eritrean Cbos In Greater Cairo, Nada Hegazy

Theses and Dissertations

Despite the recognition of the important role that community-based organizations play, among international actors concerned with refugee issues, as well as UNHCR’s adoption of a community-based approach to protection; community-based organizations continue to be sidelined by these actors. This thesis explores the role that Eritrean CBOs play in improving the lives of Eritrean refugees and asylum-seekers living in Greater Cairo. It also investigates the challenges that they face while trying to operate in Egypt. Using a multi-scalar lens, the research examines the relationships between Eritrean CBOs and Eritrean refugees and asylum-seekers, the State, UNHCR and its partner organizations, in addition …

A Qualitative Exploration Of Food Literacy In International Schools In Egypt, Amy Pugsley

Theses and Dissertations

Food literacy is an essential part of good physical and psychological health, however, food literacy is not a mandatory part of K-12 education in all schools. Many factors can influence food literacy levels including familial culture, socioeconomic status, and education levels. This research seeks to examine perceptions of food literacy in high school students and educators at two private American international schools located in Cairo, Egypt. Through the use of observations and interviews, the researcher used a qualitative approach to understand the self-perceptions of food literacy in students studying the American curriculum. The study revealed that students from high-socio-economic backgrounds …

Metaproteomics Profiling Of Gut Microbiota In Pediatric Acute Lymphoblastic Leukemia Patients, Shahd Ezz El Din

Theses and Dissertations

The gut microbiota is the collection of microorganisms that harbor the human gastrointestinal tract. The relation of microbiota and cancer is an emerging field as several studies have linked the gut microbiota to cancer. Such findings opened the door towards a new era of studies aiming to reveal the role of the microbiota in cancer initiation and progression. Although several metagenomic studies have provided insights into the gut microbial composition in health and diseased state, the microbial functional characteristics is still poorly understood. With current advances in mass spectrometry, comprehensive understanding of microbiota proteome became possible. In this vein, the …

Assessing The Correlation Between The Socioeconomic Level And Cognitive Function Among Older Adults In Egypt, Macy Abougabal

Theses and Dissertations

The number of older adults is increasing worldwide at an unprecedented rate. Some countries began to understand the challenges of aging, while others are still at the stage of comprehending the true dimensions of the situation. There is a global focus on aging research to appropriately mitigate the negative impact of aging and cognitive decline. Not only that dementia add economic pressure on governments, it also increase the psychological and physical burden of the caregivers. Scholars have previously studied socioeconomic level in three variables, namely work, education, and income, and their relationship with cognitive function. It was concluded that the …

Growing Brine Shrimp (Artemia) In Desalination Brine Water, Khaled Madkour

Theses and Dissertations

Water scarcity is one of the main issues in the recent and coming decades that resulted from the growing population, increasing agricultural lands, and other current challenges. This problem led to finding alternatives to provide fresh water for domestic usage. Desalination is one of these solutions, especially in the MENA region, which has more than half of the desalination plants in the world. The desalination process has two main outputs: freshwater and highly concentrated saline water (brine water). The brine water discharge can be done in various approaches, including deep-well injection, surface water disposal, land application, effluent disposal, and evaporation …