Digital Commons Network^™

Aloe Vera Extract-Based Composite Nanofibers For Wound Dressing Applications, Raul Barbosa, Alexa Villarreal, Cristobal Rodriguez, Heriberto De Leon, Robert Gilkerson, Karen Lozano

Mechanical Engineering Faculty Publications

Natural, biocompatible, and biodegradable composite nanofibers made of Aloe vera extract, pullulan, chitosan, and citric acid were successfully produced via Forcespinning® technology. The addition of Aloe vera extract at different weight percent loadings was investigated. The morphology, thermal properties, physical properties, and water absorption of the nanofibers were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). The developed nanofiber membranes exhibited good water absorption capabilities, synergistic antibacterial activity against Escherichia coli, and promoted cell attachment and growth. Its porous and high surface area structure make it a potential candidate for wound dressing …

Performer Wellness And Applied Stage Practices Curriculum: Preparing The Undergraduate Vocal Performance Major For An Opera Career, Gabriel J. Kirby

Masters Theses

Within higher education, the goal is to prepare students to enter the workforce with the knowledge and abilities to meet or exceed the chosen occupation’s requirements and expectations. To achieve these requisites, schools create curricula comprising key information for several fields and concentrations while abiding by the regulations enforced by both their school boards and accreditation organizations. Students can apply for a job knowing that their degree holds value. Many institutions continually revise degrees to curricula to inspire the next generation in the workforce. The purpose of this curriculum project is to advocate for expanded curriculum considerations that include acting …

French Neologisms In Larousse Dictionary Of 2018 And 2019, Amelia Wahyu Julisdianti, Danny Susanto

International Review of Humanities Studies

Larousse is one of the most important and widely used French-language dictionaries. Larousse dictionary annually releases its new edition with the addition of on average 150 new words due to the appearance of new words, known as the phenomenon of neologism. The aim of this study is to identify how new words or neologisms in the Larousse dictionary edition of 2018 and 2019 were formed using a morphological approach. The analysis essentially uses the combination of theories of Lehmann & Martin-Berthet (1999) and Grevisse, M., & Goosse, A. (2007) on four types of word formation: derivation, composition, siglaison (acronym), and …

Increasing Nutrition Education In Elementary Schools, Guadalupe Zamora Madrigal

Capstone Projects and Master's Theses

There is a lack of nutrition education in most elementary school curriculums. The importance of healthy nutrition is essential because most parents supply food for their children. Children don’t often get to control the foods they intake because parents choose their food choices for them. Most of the time parents don’t make the healthiest food choices and it affects a child’s well being. Therefore, teaching children about a healthy nutrition can encourage them to make healthier food choices for themselves and benefit their wellbeing.

Teaching Elementary School Children About Nutritionn, Dana Mastro

Capstone Projects and Master's Theses

Elementary school curriculum often lacks focus on nutrition education. Without nutrition education, children may develop poor eating habits, poor physical health, and lower quality of life. In order to address this issue, I have developed a three-day lesson for four 1st and four 2nd graders at Sheldon Acres Child Development Center in Elk Grove, California.

Exercise For Happier Employees, Charlotte Pletsch

Capstone Projects and Master's Theses

The MCHD Wellness Program serves all county employees around the Monterey area. Due to the pandemic, employees lack access to the free gym services offered to county employees and may be struggling to find resources to exercise. While working from home, employees are taking less personal time and have fitness routines interrupted due to gyms closing, causing burnout. Therefore, a plan to host a virtual 5k run was created. The virtual 5k was administered over one week and participants could run or walk 3.1 miles at their leisure as long as it was completed in one session. Participants were polled …

Equal Education For All?: Equity Issues Impacting Physical Education And Physical Activity During Covid-19 Pandemic, Gianna Pinotti

Capstone Projects and Master's Theses

The focus of this Capstone Project is on improving the equity issues affecting students' physical education and physical activity during COVID-19. Existing and newly developed equity issues have impacted students’ ability to connect with their remote physical education (P.E.), leading to decreased levels of physical activity. This is an important issue for students because their health and well-being are being negatively impacted by issues out of their control. An evidence-based argument is offered that students who engage in physical education are more likely to maintain healthier lifestyles that can lead to improved cognitive abilities and academic success. Considerations of the …

Community Gardening & Nutrition Education Event To Improve Healthy Living, Silvia Yunuen Torres Ochoa

Capstone Projects and Master's Theses

Catholic Charities (CC) is a non-governmental organization that is a part of a network of charities that focuses on immediate disaster response and helps to stabilize impacted communities. Their humanitarian-aid includes housing assistance, funding for health care services, disaster relief and distribution of food. The macro-level problem is too many people in Monterey County are at risk of diabetes. The micro-level problem is that residents of Eden Housing have a higher risk of not eating healthy foods. This project serves Eden Housing residents in Seaside where a gardening and nutrition education event was held to assist residents to plant vegetables …

Let’S Get Moving: The Benefits Of Increased Physical Activity In First Grade Classrooms, Nicole Hough

Capstone Projects and Master's Theses

The focus of this Capstone Project is the need for an increase in physical activity for first grade students. The issue addressed is how to increase opportunities for movement for students. This is important because the amount of time required to sit still throughout the school day is not developmentally appropriate, which can hinder their ability to learn, and can lead to physical and mental health issues. An argument is made that first graders should be given more opportunities for movement throughout their day, both during and outside of school hours. It is argued that this would benefit students academically, …

Preventing Dental Cavities Before Kindergarten, Melissa Godoy Hernandez

Capstone Projects and Master's Theses

The Monterey County Health Departments Oral Health Program focuses on providing health education to improve the oral health outcomes within the county. School-age children in Monterey County have high rates of dental cavities. The Preventing Dental Cavities Before Kindergarten project was a health education presentation for preschool parents. Its purpose was to reduce children’s cavity rates before kindergarten by increasing parents' oral health knowledge and providing them with tools to support their children's cavity prevention. To measure effectiveness, parents were given a post-survey in which 100% reported increasing their oral health knowledge. Additionally, preschool staff were interviewed and reported an …

A Classroom Without Four Walls? Paving The Way For More Outdoor Education, Sandra Anaya-Zamora

Capstone Projects and Master's Theses

The focus of this Capstone Project is on the need to increase outdoor education opportunities for students. More specifically, how can teachers increase outdoor learning opportunities during instructional time? This is important because a lack of outdoor educational opportunities hinders students from learning benefits only found through their environment. It is argued that a decrease in environmental integration in schools will cause children to lose touch with nature, affecting their development and the future sustainability of our planet. The three primary stakeholder perspectives chosen were one teacher, one science teacher, and one garden-nutrition educator because considerations of the issue should …

The Influence Of Sports-Related Concussion On Lower Extremity Injury Risk In Adolescent And Collegiate Athletes, Jason M. Avedesian

UNLV Theses, Dissertations, Professional Papers, and Capstones

Sports-related concussion (SRC) represents a major epidemiological concern in the adolescent and collegiate athlete populations, with conservative estimates of approximately four million SRCs occurring each year in the United States. While the majority of previous research has emphasized the management and recovery of the cognitive aspects of SRC, recent data indicates subtle motor behavior is altered following a concussive event. Injury surveillance literature indicates that adolescent and collegiate athletes are at an approximately 2–4 greater risk for lower extremity (LE) injury following an SRC when compared to matched controls and pre-SRC LE injury rates. Furthermore, athletes with a previous SRC …

Investigation Of Algorithms To Assess Validity Of Wearable Technology During Field Testing, Brenna Barrios

UNLV Theses, Dissertations, Professional Papers, and Capstones

Wearable technology is an emerging fitness trend where the technology which supports it lacks validity verification. Furthermore, heart rate validity of these devices vary greatly when observed in laboratory settings vs. field testing. Secondarily, Consumer Technology Association guidelines require a minimum five minute trial for wearable testing. This study examined heart rate data of previously tested wearable devices (Garmin Fenix 5, Jabra Elite Sport, Motiv Ring, Scosche Rhythm+) in an outdoor setting to further understand their performance, and to examine the relationship of the five minute regulation. Two separate algorithms were applied to the original data set, the first shortened …

The Influence Of Resistance Training On Post Surgical Outcomes In Individuals With Anterior Cruciate Ligament Injury, Kevin H. Choe

UNLV Theses, Dissertations, Professional Papers, and Capstones

The anterior cruciate ligament (ACL) is commonly injured, especially in individuals under the age of 25. ACL reconstruction (ACLR) is the most common treatment after ACL injury, followed by physical therapy. However, successful surgery and completion of rehabilitation, individuals still demonstrate quadriceps weakness and asymmetries during locomotion. To improve these deficits, an intervention that improves quadriceps strength and lower extremity biomechanics during locomotion is required. First, we aimed to complete a systematic review of the literature to determine the efficacy of resistance training in improving outcomes after ACLR. Second, we aimed to identify if a history of resistance training positively …

Relationship Of Shoe Wetness To Mechanical Performance, Sara Lyn Crawford

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to mechanically impact test shoes that underwent both saturation and repetitive loading protocols to determine if these interventions affected the impact absorption and energy return properties of a shoe. Six pairs of the same make and model of shoe were divided into Control and Experimental Groups and tested on an impact machine before and after undergoing a protocol. The repetitive load protocol involved subjecting the shoes to impacts commensurate with a 5 km race. The water saturation protocol involved soaking the shoes until reaching their maximum saturation. The Control shoes underwent initial testing and …

The Role Of Nutrition And Hormone Signaling In Extended Larval Development And Obesity In Starvation-Selected Drosophila Melanogaster, Jennifer M. Clark

UNLV Theses, Dissertations, Professional Papers, and Capstones

Brief periods of starvation are a common stressor that most animals encounter in the wild and must be able to survive in order to maximize their fitness. Starvation resistance of the adult fruit fly, Drosophila melanogaster, is thought to be primarily conferred by adult fat stores, body size, metabolic rate, behavior, and activity levels. Additionally, flies selected for starvation resistance also often show delayed pupariation, which is usually indicative of altered hormone signaling. How starvation selection extends development and if it contributes to adult starvation resistance remains incompletely studied. Identifying the targets of starvation selection that cause extended development and …

The Investigation Of The Influence Of Long-Distance Running On Foot Volume In Healthy Female Collegiate Distance Athletes, Mufaro M. Hungwe

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to determine the change, if any, in foot volume over time after exercise, specifically a long-distance 5 Km run. Five UNLV Women’s Track & Field and Cross- Country distance athletes (n = 5; 20 ± 1.87 years; 54.50 ± 3.71 kg; 160.88 ± 4.98 cm) were recruited to participate in this study. The dependent variables were foot volume and foot size. These variables were measured pre and post a 5 Km run at a self-selected somewhat hard pace over the independent variable time. Foot volumetrics were performed five times, (Pre-run, post- run(5 min), post-run(10 …

Improving Self-Care Measures Of Hypertension Through Implementation Of An Education And Action Plan, Crystal Celeste Huffaker

UNLV Theses, Dissertations, Professional Papers, and Capstones

Hypertension (HTN) is a leading cause of morbidity and mortality worldwide and one of the most common conditions seen by primary care providers. Current clinical practice guidelines recommend lifestyle modifications for patients with elevated blood pressure (BP) and diagnosed HTN. Despite these recommendations, many patients diagnosed with HTN make insufficient modifications to their lifestyle. The purpose of this project was to determine the impact of implementing an education session, with development of a patient action plan, along with 4-week, 8-week, and 12-week follow-ups on the adoption of self-care measures for HTN. Participants had their BP, height, and weight measured along …

Healthy Aging In Place: An Integrated Smart Home Using Alexa-Compatible Technology, Tyler Kryst

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this research was to address current healthcare concerns among the aging population. Around the globe, the average life expectancy is projected to continue increasing resulting in a higher prevalence of age-related disease. With the ever-increasing capabilities of modern technology, it is necessary to apply this technology to increase the health and safety of older adults. This work had three objectives. The first objective was the establishment of an integrated smart home aimed at creating a healthy aging-in-place environment through the use of Alexa. The second objective was the development and integration of a completely custom health device …

Estimation Of Spatial Change In Cropland Area And Evaluation Of Irrigation Performance In Imperial Valley Using Remotely Sensed Data, Usha Poudel

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Imperial Valley (IV) in the US is an extensively irrigated agricultural region, which includes multiple crops changing on an annual and semiannual basis. The valley is facing grave concerns about water management due to its semi-arid environment, water intensive crops, and limited water supply. A simple, inexpensive, and repeatable method to detect changes in cropping patterns may assist irrigation managers to understand crop diversification and associated consumptive use. In addition, a spatial assessment of existing water irrigation system performance and productivity is crucial to benchmark and improve current water management strategies. This thesis estimates the spatial pattern of change …

Relationship Between Jump Performance And Asymmetry, Cordero Roche

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this dissertation is to investigate the relationship between jump performance and asymmetry. This investigation was divided into three separate studies. The first aim investigated which asymmetry variables for eccentric and concentric phases best predicted jump height (JH) during different jump types. The aim of the second study was to determine if asymmetry variables differed between jump type and genders.

Fourteen participants performed countermovement jumps (CMJ) and drop vertical jumps (DVJ). The DVJ were administered from a 30.5 cm platform leading with dominant leg striking separate force platforms with each foot. Vertical ground reaction forces were used to …

The Effects Of Green Exercise On Perception And Connectedness To Nature, Robert W. Salatto

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: The purpose of this dissertation is three-fold: 1. Investigate the effects of acute beta alanine ingestion during green exercise on connectedness to nature, and perception of pain. 2. Investigate the test-retest reliability of the Love and care of Nature Scale during the task of mountain biking. 3. Investigate the effects of green exercise on connectedness to nature and perception. Methods: Three individual studies were conducted: The first was a double-blinded, placebo-controlled, crossover study design which examined the effect of induced painful sensation (via acute Beta Alanine (B-ALA) ingestion) on Love and Care of Nature (LCN), heart rate (HR), rating …

Developing Strategic Partnerships To Impact Population Health: A Professional Development Module, Andra S. Scano

UNLV Theses, Dissertations, Professional Papers, and Capstones

Massive organizational changes occurring in our health care delivery system have provided opportunities for nurse leaders who think in terms of population health, to develop new skills needed to impact the populations they serve. Aspects of these changes include a focus on the delivery of primary and community-based care and the development of partnerships, alliances, and other linkages across settings to build integrated systems (Williams, 2020, p. 17). Turner (2020) asserts that population-focused nurse leaders are charged with creating a new future for healthier communities which often involves strategic partnership development. However, strategic partnership development is a complex task that …

Differential Gene Expression In Starvation Selected Drosophila Melanogaster, Katherine Schultz

UNLV Theses, Dissertations, Professional Papers, and Capstones

Fruit flies that have been selected for starvation resistance can be used in experimental studies to study physiological processes. Both their genomes and their phenotypes, especially metabolism, change significantly as a result of artificial selection. Starvation selected flies develop slower and are larger due to higher lipid content as adults. We used RNAseq to study gene expression in third instar larval fat body tissue from selected and control lines at the same chronological time point, when the fed control (“FC”) lines were wandering, and the starvation selected (“SS”) lines were in the third larval instar but not yet wandering due …

Assessment Of The Infrazygomatic Crest And Distal Infrazygomatic Crest For Bone Depth And Miniscrew Insertion, Kyle C. Tuttle

UNLV Theses, Dissertations, Professional Papers, and Capstones

The aim of this study was to analyze and compare the bone depth at various postulated miniscrew insertion angles in both the Infrazygomatic Crest (IZC) and Distal Infrazygomatic Crest (DIZC) regions. Furthermore, root morphologies of the maxillary 1st and 2nd molars and their effect on bone depth and the various miniscrew insertion angles were analyzed.

A total of 69 CBCT images were collected from pre-orthodontic adult patients at the UNLV orthodontic residency clinic. Bone depth measurements were made at 8 postulated miniscrew insertion angles starting at 40° up to 75°. All measurements were recorded from the buccal bone at the …

Food Insecurity And Adiposity Among Children And Adults Nhanes 2015-2016, Denise Vidal

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: Obesity is a preventable disease that has been associated with many adverse health outcomes. A possible factor that may influence adiposity development is food insecurity. Although several epidemiological studies have been conducted examining the association between food insecurity and adiposity among children and adults, results have been inconsistent. Objective: This cross-sectional study investigates the relationship between food insecurity and adiposity among children and adults using recent data from a representative sample of the US population. Methods: We examined 3,391 adults and 2,837 children from the National Health and Nutrition Examination Survey (NHANES) 2015-2016. Household food insecurity was assessed using …

Akr1c2 And Akr1c3 Expression In Adipose Tissue: Association With Body Fat Distribution And Regulatory Variants., Giada Ostinelli, Jinchu Vijay, Marie-Claude Vohl, Elin Grundberg, Andre Tchernof

Manuscripts, Articles, Book Chapters and Other Papers

BACKGROUND: Changes in androgen dynamics within adipose tissue have been proposed as modulators of body fat accumulation. In this context, AKR1C2 likely plays a significant role by inactivating 5α-dihydrotestosterone.

AIM: To characterize AKR1C2 expression patterns across adipose depots and cell populations and to provide insight into the link with body fat distribution and genetic regulation.

METHODS: We used RNA sequencing data from severely obese patients to assess patterns of AKR1C2 and AKR1C3 expression in abdominal adipose tissue depots and cell fractions. We additionally used data from 856 women to assess AKR1C2 heritability and to link its expression in adipose tissue …

Interactive Effects Of Soil And Browsing On Big Sagebrush: Implications For Restoration Success, Kyle Nehring

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Heterogeneity in landscape conditions (e.g., soil types) precludes a “one size fits all” management strategy across large landscapes. New management approaches that explicitly account for heterogeneous landscapes (and the variable conditions therein) will be required to maintain habitat quality. In particular, we require an improved mechanistic understanding of how the outcomes of conservation and restoration actions are contingent upon a) contextual abiotic factors (e.g., moisture availability mediated by soils and precipitation) and b) their interactions with biotic factors (e.g., browsing wildlife).

We propose to answer fundamental questions about how big sagebrush (Artemisia tridentata), the foundational species for sagebrush …

Hypercalcemia Of Malignancy Attributed To Cosecretion Of Pth And Pthrp In Lung Adenocarcinoma, Jeffrey Kroopnick, Ubaldo E. Martinez-Outshoorn, Madalina Tuluc, Caroline S Kim

Department of Medical Oncology Faculty Papers

Introduction: Hypercalcemia of malignancy (HCM) portends a very poor prognosis, and no established guidelines exist regarding its management. Most instances of HCM are due to local osteolysis or secretion of parathyroid hormone related-peptide, while less than 1% of all cases are due to ectopic secretion of parathyroid hormone.

Case report: We present an unusual case of HCM due to proposed cosecretion of both parathyroid hormone and parathyroid hormone-related protein in a 36-year-old man with a poorly differentiated lung adenocarcinoma. The patient's hypercalcemia was refractory to conventional measures, including intravenous bisphosphonate therapy (zoledronic acid), and was improved with administration of denosumab. …

Gut Community Response To Wheat Bran And Pinto Bean, Shuen Leow

Department of Food Science and Technology: Dissertations, Theses, and Student Research

There is general consensus among the scientific community that dietary fibers reduce the risk of Western diseases through their fermentation by beneficial microbial communities in the human gut. However, dietary fibers in wheat bran (WB) and pinto bean (PB) are incompletely fermented by the gut microbiota. Therefore, there is a critical need to identify gut microbial communities that can increase fermentation of dietary fibers from these foods to maximize their disease-preventing properties. The goal of this study was to identify such communities with increased capacity to ferment the dietary fibers in WB and PB. To accomplish these goals, a stepwise …