Digital Commons Network^™

An Evaluation Of Activity In A Colonial Maya Cemetery Using Femoral Cross-Sectional Analysis, Casey Lejeune

Master's Theses

Cortical bone formation in the population of Tipu, a colonial visita site in Belize, was examined here to reveal factors of their activity and address the possibility of a status-based burial plan. To answer this question, this research examined the endosteal surface of the midshaft femur using digital imaging methods. The femora from 70 individuals were photographed and examined using the BoneJ plugin in ImageJ software. The cortical bone area was compared to additional variables, including sex, age, stature, pilastric index, and burial location. It was hypothesized that sex, age, and stature would correlate with cortical bone area similarly across …

The Effects Of Increased Nacl Salinization On Riparian Plant Productivity And Decomposition Processes, Connor Gruntz

Master's Theses

NaCl salinization in inland ecosystems is increasing globally due to anthropogenic activity and may alter organism abundances and ecosystem processes. Because sodium is an essential nutrient for heterotrophs but not required by autotrophs, this salinization can alter species abundance and performance. Riparia may be particularly sensitive to increases in salinization. Here, I examined the Sodium Subsidy-Stress Hypothesis, which states that deviations from an organism’s optimal nutrient target can decrease abundance and performance, by studying the effects of NaCl salinization on plant chemistry, productivity, and decomposition rates in riparia. First, I selected three focal common riparian plants (water oak: Quercus nigra, …

Relationship Between Calcium Consumption From Dairy And Non-Dairy Sources On Bone Mineral Density Of College Students, Andrew M. Pescovitz

Master's Theses

Dairy product consumption has been on the decline for decades in the US and worldwide, and the increase in plant-based substitutes has grown substantially. Osteoporosis and the risk of bone fractures are serious public health issues. To date, little scientific-based studies have compared the relationship between calcium intake from dairy sources vs non-dairy sources and bone mineral density. The purpose of this study is to compare the relationships between calcium consumption from dairy vs. non-dairy sources and bone mineral density among college students. There was a total of 66 participants in the study including 15 (23%) males and 51 (77%) …

Associations Between Parenting Stress, Feeding Practices, And Child Eating Behaviors During The Covid-19 Pandemic, Maria G. Gonzalez

Master's Theses

The COVID-19 pandemic provides an important opportunity to understand how parenting stress during social crisis may predict child feeding practices and perceptions of child mealtime behaviors. The objective of the present study was to explore whether parents’ perceived increases in and overall levels of parenting stress during the pandemic were associated with controlling feeding practices and perceptions of child eating behaviors. Parents (n = 284) of 4–6-year-old children completed a cross-sectional online survey between March and April 2020. The survey assessed parents’ perceived change in parenting stress during the onset of the pandemic and levels of parenting stress during …

The Effects Of Wort Oxygenation Scenarios On Fermentation Performance, Volatile Flavor Compound Development, And Flavor Stability In High Gravity Brewing, Ben Jabson

Master's Theses

High gravity (HG) brewing has become the most used strategy for maximizing fermenter productivity in commercial brewing. While HG brewing has many benefits, the additional stress placed on the yeast due to the higher concentration of fermentable sugars in the wort can negatively impact fermentation performance and flavor compound formation. A proper dissolved oxygen (DO) level is vital to guarantee adequate yeast performance during HG fermentations. Dissolved oxygen is vital to yeast viability throughout the fermentation process, as yeast requires oxygen to synthesize vital cell membrane components needed for continued anaerobic growth and cell division. Previous research has demonstrated the …

Effect Of Simulated Storage And Distribution On Listeria Innocua Growth In Non-Traditional Salad Ingredients, Emma L. Sandquist

Master's Theses

The fresh-cut produce industry has seen expansive growth in recent years, to meet consumer demand ready-to-eat (RTE) salads have included the use of non-traditional ingredients. Uncommon ingredients include beet greens, kale, broccoli stalk, and Brussels sprouts, since these ingredients have not historically been consumed raw, potential food safety issues should be reassessed. Current processing technologies include produce washes that can reduce microbial levels but do not eradicate all populations. The lack of a kill step in produce processing emphasizes the need to minimize pathogen contamination during production and growth during a product’s shelf life. Listeria monocytogenes, a leading cause …

Estimating Food Waste Due To Food Safety Recalls And Investigating Ways To Minimize Negative Impacts, Mykayla Latronica

Master's Theses

For years the issue of food waste has been recognized and quantified; however, food safety issues often go unrecognized as a source of food waste. One objective of this research is to estimate quantities and monetary value of fruits and vegetables implicated in food safety recalls, and thus wasted. Using publicly available data we identified all recalls involving vegetable or fruit commodities contaminated with Listeria monocytogenes, pathogenic E. coli, or Salmonella during 2015-2018. When quantities were provided, monetary value of recalled product was calculated using USDA ERS 2016 average retail prices. Although data limitations only allowed analysis of …

The Identification Of Lxr-Dependent Pathways In The Dorsal Root Ganglia In Models Of Obesity, Nadia Elshareif

Master's Theses

Peripheral Neuropathy is characterized as injury to the peripheral nervous system. In terms of sensory neuropathy, metabolic syndrome is involved in chronic inflammation and ER stress pathways induced by lipid overload, leading to the structural and physiological damage of afferent sensory nerves. To protect the cell from lipid-induced ER stress, Liver X Receptors (LXRs) are sterol-activated nuclear transcription factors that are of particular interest due to its role in the regulation of lipid homeostasis, membrane phospholipids, and inflammation in metabolic tissues. Their role in the peripheral nervous system remains to be elucidated. LPCAT3, regulated by LXRs, has been shown to …

Do Conditional Cash Transfers Increase School Enrollment? Evidence From Brazil, Jeanette L. Silvernale

Master's Theses

Conditional cash transfer programs have been widely deployed across the globe. They seek to bolster human capital by providing benefits contingent upon a variety of actions such as school attendance and regular health checkups. Bolsa Familia is the most extensive conditional cash transfer program, serving 46 million Brazilian citizens. Despite its expansive size, there have been seldom large-scale micro evaluations of the program. Limited data has resulted in small sample sizes drawn from a single point in time. Our study diverges from the rest and utilizes a novel administrative dataset with an overall sample of nearly 60 million and a …

Prevalence Of Avoidant/Restrictive Food Intake Disorder And Association With Nutrition Status In Patients With Inflammatory Bowel Diseases, Emily Yelencich

Master's Theses

There is a large body of research on the relationship between inflammatory bowel disease (IBD) and diet; however, few conclusive, generalizable recommendations have been determined. Regardless, IBD patients often alter their normal dietary intake, which is concerning considering the prevalence of malnutrition in the IBD population. Avoidant/restrictive food intake disorder (ARFID) is a feeding disorder that was recently added to the Diagnostic and Statistical Manual of Mental Disorders and its prevalence and impact on the nutritional status of IBD patients has not previously been described. In this study ARFID risk was measured using the Nine-Item ARFID Screen and in the …

Minority Student Food Insecurity In Higher Education, Joe Sevillano

Master's Theses

The minority student population in higher education has been affected by food insecurity at a disproportionate rate. Several studies have captured some of the issues associated with the material deficit but fail to identify more in-depth contributing factors. Using the theoretical framework of intersectionality, the researcher examines the experience, interpretation, and navigation of food insecurity in a medium-sized university located in a major city on the west coast. The researcher interviewed three students that self-identified as having multiple minority identities and experiencing some level of food insecurity while pursuing a degree. Findings from three rounds of interviews gave further context …

Effects Of Infection Of The Protist Parasite, Dermomycoides Sp., In Dusky Gopher Frog Tadpoles, Jaime Smith

Master's Theses

Infections of the protist parasite, Dermomycoides sp. are thought to have caused several years of low recruitment in the dusky gopher frog (Rana sevosa) populations. I evaluated the effects of density of the infective zoospores, host developmental stage, and tadpoles' ability to acquire resistance to Dermomycoides sp. on dusky gopher frog tadpoles. Tadpoles were exposed to zoospore densities of 0, 250, 500, and 750 zoospores/µL at Gosner stage 25, and we found no significant differences among treatments in tadpole mortality. In evaluating susceptibility by development stage, I exposed R. sevosa to 50 zoospores/µL as eggs, embryos, hatchlings, and …

Nutrition At Tipu: A Comparative Analysis Of Juvenile Health In Maya Populations, Sydnie A. Bianchi

Master's Theses

The site of Tipu in west central Belize provided a foothold for Spanish missionaries in the 17^th century. The effects of contact on adults among the 550 burials recovered in the cemetery there have been well studied, but the children have received less attention. Therefore, this study examined juvenile health through four markers: Linear Enamel Hypoplasia (LEH), a non-specific marker of health disruptions; Porotic Hyperostosis (PH), an indicator of anemia; and Periostitis, an indicator of infection. Some 131 individuals were evaluated using criteria developed by Steckel, Sciulli, and Rose (2002). The results were compared to Late Classic Copán (Storey, …

With A Little Help From My Friends: Determining The Role Of Physical Activity And Belonging In Retention Of First-Year University Students, Bryson Kelly

Master's Theses

There exists an issue facing colleges and universities across the United States. Roughly 29% of first-year students do not return for their second year of school. Previous research has shown a significant relationship between a student’s sense of belonging or fit within the university and their decision to continue enrollment (retention). Physical activity has also been shown to have a significant relationship with a sense of belonging. Therefore, the purpose of the present study was to determine if physical activity and sense of belonging predict retention of university students from their first year to their second year using a Relationships …

Improving Sustainable Fertilizer Practices For Pomegranate By Leaf Nutrient Concentration Evaluation And Fertilizer Trials, Minh Le

Master's Theses

Fruit tree leaf nutrient concentrations are commonly used to determine fertilizer rates, but information is limited regarding nutrient requirements, seasonal N uptake and removal rates, and soil N dynamics for pomegranate. Relationships between fertilizer rates, leaf nutrient concentrations, fruit yield and quality were examined in five mature, commercial California ‘Wonderful’ pomegranate orchards. Site 1 was observed for two growing seasons (2018-2019) and sites 2-5 were observed for one season (2018 or 2019). In 2018, 150, 300, or 450 g N/tree was applied at sites 1-3 in a single application at early fruit development or in two equal applications at early …

Impact Of Soil Properties On Removal Of Emerging Contaminants From Wastewater Effluent During Soil Aquifer Treatment, Lauren N. Riley

Master's Theses

This study evaluates soil properties that impact the effectiveness of soil aquifer treatment (SAT) as a polishing step to the remove two classes of ECs from wastewater effluent: pharmaceuticals and personal care products (PPCPs), and engineering nanomaterials (ENMs). In recent years, it has been determined that elevated levels of emerging contaminants (ECs) are being released into the environment with wastewater effluent. ECs are proven to cause adverse environmental and health effects as a result of long-term exposure. It is important to evaluate sustainable solutions to improve the current methods of wastewater treatment to address these ECs.

Soil aquifer treatment (SAT) …

Validation Of An Inertial-Measurement-Unit System For Calculating Hip And Knee Flexion Angles During Gait, Joonsun Park

Master's Theses

Technological advances regarding Inertial Measurements Units (IMUs) have positioned this type of sensor as an alternative for camera-based motion capture. This study introduces a new IMU based system (IMU_sys) to measure hip and knee flexion angles. PURPOSE: To validate the use of a five-sensor IMU_sys for the measurement of knee and hip flexion angles during gait in adults and pediatrics at two different time points. METHODS: Bilateral hip and knee flexion patterns (LH, RH, LK, and RK) of twenty-two healthy participants (12 adults and 10 pediatric) between the ages of 8 – 35 years were investigated. Participants …

A Comparison Of Two Protein Supplements On The Healing Of Stage Iii And Iv Pressure Injuries In Enterally Fed, Ventilator Dependent Long – Term Care Residents, Kalli Talaska

Master's Theses

The purpose of this study was to evaluate the change in stage III or IV pressure injury size of enterally fed, ventilator dependent, long-term care residents after receiving one of two protein supplements in addition to enteral feeding meeting 100% of calculated needs. The two protein supplements were Beneprotein™ (powder) and Pro T Gold™ (liquid). The injuries were evaluated for change in size at two weeks and four weeks post initiation of protein supplement. Sixty subjects were reviewed – 30 for each supplement. Subjects included 20 males (33%) and 40 females (67%). The analysis indicated for the total sample, a …

Snap Assistance, Food Purchasing Behaviors And Dietary Patterns Among Overweight/Obese, Pregnant, Low-Income Latinas, Marta Holovatska

Master's Theses

No abstract provided.

Assessing Seasonal Changes In Body Condition For Spotted (Phoca Largha), Ringed (Pusa Hispida), And Bearded (Erignathus Barbatus) Seals, Michelle Hartwick

Master's Theses

Anthropogenic global warming is causing unprecedented changes to occur within Arctic ecosystems. As sea ice continues to decline in both thickness and extent, ice-adapted species will be particularly affected. Specifically, Arctic seals are reliant on sea ice during critical life-history stages and many of their preferred prey depend on reliable patterns in annual sea ice cover. Thus, ongoing changes will likely affect the ability of Arctic seals to carry out key life-history tasks and maintain positive energy balance. One way to assess energy reserves is through examination of body condition. For seals, this is often done by measuring overall blubber …

An Exploration Of Health Misinformation In A Facebook-Delivered Health Education Intervention, Kelsey Arroyo

Master's Theses

Background: Health misinformation is commonly shared on social media but little research has examined how misinformation is communicated and what health messages are most likely to receive misinformed responses on social media. Purpose: The purpose of this work is to explore the extent to which health misinformation was shared by participants in a private Facebook-delivered health education intervention moderated by a health counselor. Methods: We used engagement data from a randomized controlled trial of a yearlong Facebook-delivered health education intervention. We conducted a content analysis of 6,016 participant comments (including original posts and replies) to examine the nature of comments …

Maleic Anhydride Compatibilized Peach Waste As Filler In Polypropylene And High Density Polyethylene Biocomposites, Caralyn Wong, Stephanie Jung, Joongmin Shin, Ajay Kathuria

Master's Theses

It is estimated that roughly 103, 515 tons of peach waste is produced annually in the US. The majority of the waste is disposed of in landfills, which contributes to climate change as they release 93 million metric tons of CO₂ equivalent. Peach waste principally consists of remaining stone and seed after flesh removal. The agro-waste includes both cellulose and lignin, which can be utilized as a filler in plastic packaging to reduce carbon footprints and material cost. The objectives of this research are (1) to develop peach flour (PF)-filled biocomposites with a polyolefin matrix using maleic anhydride-g-high density …

The Role Of Notch In Adipose-Derived Stem Cell Adipogenesis, Mengcheng Liu

Master's Theses

Obesity is the leading cause of chronic disease and has contributed to significant health problems and complications. In order to solve this increasingly serious social problem, it is particularly important to deepen the understanding of the biological causes of obesity. Obesity is the result of an increased mass of adipose tissue after excessive caloric intake, and adipogenesis is the main strategy through which the body increases the number of adipocytes. However, due to the lack of research, the current understanding of adipogenesis is not enough to yield results in the clinic.

The regulation of adipogenesis is complex, and the role …

Exploring The Relationships Between Mothers' Use Of Food To Soothe, Feeding Type And Mode, Maternal Feeding Style, Infant Behavior, And Infant Weight-Related Outcomes During Early Infancy, Megan K. Hupp

Master's Theses

Rapid infant weight gain (RWG) in the first six months postpartum is a strong predictor for obesity during childhood and adolescence. Although biological factors can influence infant weight gain trajectories, the modifiable factor of parent feeding practices can also have an influence. The use of food to soothe (FTS), or the act of feeding a child when he/she is upset for reasons other than hunger, has been associated with unhealthy eating behaviors and less-favorable weight outcomes in children and older infants. However, limited studies have explored the use of FTS during early infancy before the introduction of solids foods. The …

Lipid Quantification And Cryopreservation Of In Vitro Produced Jersey Cattle Embryos, Katherine A. Rhodes-Long

Master's Theses

Cryopreservation of in vivo derived Jersey bovine embryos have resulted in a 10% lower pregnancy rate compared to other dairy breeds. Poor embryo survival after cryopreservation has been partially attributed to the high lipid content of Jersey embryos. In vitro-produced (IVP) bovine embryos have darker cytoplasm than their in vivo-derived counterparts because of higher lipid accumulation. High lipid accumulation is associated with impaired embryo quality. Forskolin is an adenylate cyclase activator that regulates cAMP levels in cells and has been shown to induce lipolysis in IVP embryos. L-carnitine is required for transport of fatty acids from the intermembrane space of …

Quantifying The Ecological Drivers And Impacts Of Parrotfish Predation On Caribbean Corals Communities, Hannah Sima Rempel

Master's Theses

Parrotfishes (Scarinae) are dominant Caribbean herbivores that play an important role in reducing coral-algae competition by grazing algae; yet some species are also occasional coral predators (corallivores) and thereby can have direct negative impacts on coral growth and survivorship. There is concern that parrotfish corallivory may contribute to substantial long-term declines in targeted coral species, particularly in areas with a high biomass of parrotfishes and low cover of corals. However, the capacity of target coral species to heal from parrotfish predation and the ecological drivers of corallivory are poorly understood.

In Chapter 1, we examined the patterns of coral healing …

Effect Of Unilateral Lower-Limb Amputation On Intact Limb Biomechanics: A Systematic Review, Amanda Boyd

Master's Theses

The United States will perform 30,000-40,000 amputations this year (Ertl et al., 2019). As a common medical intervention, there is extensive research regarding rehabilitation strategies and post-operative care. Many studies have explored the effects of the affected limb and prosthetic intervention yet have neglected that of the contralateral limb (De Asha et al., 2014; Jones et al., 2006; Winter & Sienko, 1988). Studies have reported an increase in secondary musculoskeletal conditions among unilateral lower-limb amputees, particularly in the intact limb, indicating the need for additional research (Gailey et al., 2008). The purpose of this systematic review was to investigate the …

Effects Of Various Decontamination Protocols On The Surface Microbial Load Of Conventional And 3d Printed Surgical Guides For Dental Implants, David Remiszewski

Master's Theses

No abstract provided.

Alveolar Bone And Airway Changes In Different Maxillary Expansion Treatments: A 3d Cone-Beam Tomography Study, Dennis Wang

Master's Theses

Objectives: To evaluate the long-term effects on the airway and bone in patients that have undergone BA, TA and control with 3D cone beam computed tomography (CBCT) analysis. Materials and Methods: 180 CBCTs were analyzed for 60 patients at pretreatment (T1), post expansion (T2), and post-treatment (T3). Patients were divided into three groups, bone anchored expansion (BA), tooth anchored expansion (TA) and a control group. For the airway portion of the study, the nasal cavity, nasopharyngeal, oropharyngeal and laryngopharyngeal, and total airway volumes were measured. Total airway area, minimal cross-sectional area, maxillary intermolar, external maxillary and palatal widths were also …

Interprofessional Collaboration For Oral Health Education And Screening Of Children With Special Health Care Needs, Lamia Habib

Master's Theses

In 2016, National Survey of Children’s Health conducted by the U.S. Department (HRSA MCHB) identified 18.8% of children aged 0-17 years old with Special Health Care Needs (CSHCN). Of these children, 83.4% are not receiving adequate healthcare. It has been well established that oral health is an integral part of the child’s general health. Medical primary care physicians may play an important role in improving oral health outcomes through oral screening, referral, oral health education and promotion. CSHCN may be at an increased risk for oral health problems throughout their life which may negatively impact their quality of life and …