Digital Commons Network^™

Pediatric Trauma Trends Before And After Recreational Cannabis Legalization In Nevada: A Retrospective Repeated Cross-Sectional Study, Jenna Serr, Vidhani Goel, Roberto Sagaribay, Kavita Batra, Ami P. Shah

School of Medicine Faculty Research

Background: Cannabis legalization has raised concerns regarding its potential influence on injury patterns, particularly among children. However, evidence on pediatric trauma remains limited. Objective: To examine trends in pediatric trauma incidence, injury mechanisms, healthcare utilization, and socioeconomic characteristics before and after recreational cannabis legalization in Nevada. Methods: A retrospective repeated cross-sectional study of trauma registry data was conducted using pediatric trauma activations recorded between 2013 and 2023. Incidence rates per 100,000 population were calculated using census data. Pre-legalization (2013–2016) and post-legalization (2017–2023) periods were compared using incidence rate ratios (IRRs) and bivariate tests. Socioeconomic status was assessed using the Distressed …

Mapping Climatic And Environmental Determinants Of Parasitic Helminth Prevalence In Southeast Asia, Angelica Avisado

UNLV Theses, Dissertations, Professional Papers, and Capstones

Climate change is reshaping environmental conditions across Southeast Asia (SEA) through rising temperatures, altered precipitation patterns, and increased droughts. These changes alter transmission dynamics of neglected tropical diseases (NTDs) by shifting spatial distribution, increasing larval development rates, faster pathogen growth development, and increasing transmission rates. NTDs are a group of preventable and treatable infections that disproportionately affect more than 1 billion people globally, specifically in tropical and subtropical regions. A subgroup of NTDs, parasitic helminth infections (PHIs) - particularly schistosomiasis, soil-transmitted helminths, and lymphatic filariasis remains a public health concern in the Southeast Asian region. PHIs and their ecological responses …

Image Processing Techniques For Water Droplet Penetration Time And Contact Angle Estimation, Sai Balaji Jai Kumar

UNLV Theses, Dissertations, Professional Papers, and Capstones

Water droplet behavior on soil surfaces plays a critical role in numerous environmental processes, including soil erosion, hydrological dynamics, and ecosystem health. Accurate characterization of soil water repellency, quantified by parameters such as water droplet penetration time (WDPT) and contact angles (WDCA), is essential for informed decision-making in agricultural management, forestry practices, and land-use planning. Despite the significance of these parameters, challenges exist in reliably estimating them due to the complex and dynamic nature of soil-water interactions. This thesis address challenges in estimating WDPT and WDCA, by leveraging state-of-the-art image processing techniques and machine learning algorithms. The research focuses on …

Evolution And Natural Selection Of Olfactory Receptor Genes In Hawaiian Drosophila, Ngoc H. Ly

UNLV Theses, Dissertations, Professional Papers, and Capstones

The olfactory system is a powerful tool for sensing countless odorants. In Drosophila, the olfactory system is critical for detecting food, finding mates, laying eggs, avoiding predators, and adapting to new environments. Understanding the olfactory system in Drosophila will advance our knowledge of sensory biology in various insects and vertebrates, including humans. Drosophila has been a valuable model for biology since the early 1900s, and the Drosophila melanogaster olfactory system is well-studied. The Hawaiian Drosophila represent approximately 1/3 of the world’s Drosophila, however, there is limited research on Hawaiian Drosophila olfactory genes. We conducted a comparative analysis of …

The Efficacy Of An Educational Toolkit To Enhance Knowledge Of Pediatric Reflux Management Among Occupational Therapists, Kelly Cullerton

UNLV Theses, Dissertations, Professional Papers, and Capstones

This manuscript describes a quality improvement project completed by a student in the University of Nevada Las Vegas Occupational Therapy Doctorate Program. The project tests the efficacy of an educational toolkit for occupational therapists staffed at an acute care hospital in Las Vegas, Nevada, to increase their perceived knowledge of and ability to educate families on conservative management techniques for pediatric reflux management. Results indicate that the toolkit demonstrated efficacy in achieving this objective. The toolkit provided useful staff education and parent handouts for the occupational therapists to utilize in patient care as appropriate. This project’s ultimate aim was to …

Social Determinants Of Disease: Hiv And Covid-19 Experiences, Raiza M. Beltran, Ian W. Holloway, Chenglin Hong, Ayako Miyashita, Luisita Cordero, Elizabeth Wu, Katherine Burris, Paula M. Frew

Epidemiology & Biostatistics Faculty Research

Purpose of Review: The differential impact of the COVID-19 and HIV pandemics on marginalized communities has renewed calls for more robust and deeper investigation into structural and social causes of health inequities contributing to these infections, including underlying factors related to systematic racism. Using the Social Determinants of Health (SDOH) framework, we analyzed parallel and divergent factors associated with COVID-19 and HIV/AIDS and the prevalence of disparate disease in diverse communities. We utilized PRISMA guidelines to identify relevant literature (N = 210 articles) that resulted in a review of 125 articles included in our synthesis. Recent Findings: With racial health …

Education Regarding And Adherence To Recommended Nutrition Guidelines Among Dental Students, Camille Frayna, Christoffer Devantier, Braden Harris, Karl Kingsley, Joshua M. Polanski

Dental Medicine Faculty Research

The Dietary Guidelines for Americans (DGA) were developed to reduce or prevent many types of chronic illness, including cancer, heart disease and diabetes. Healthcare provider recommendations may be influenced by understanding of and adherence to the DGA, which may be incorporated into provider training, medical and dental clinical curricula—although few studies have evaluated adherence to the DGA among dental students. This approved retrospective study of voluntary student responses from a first-year dental school nutrition course included a short dietary and exercise survey administered as part of the DGA learning module. A total of N = 299 students completed the voluntary …

A Systematic Review Of The Rationale For Vaccine Hesitancy Among American Parents, Jordan Luttrell-Freeman, Timothy J. Bungum, Jennifer R. Pharr

Environmental & Global Health Faculty Research

Vaccines are one of the most successful interventions in the history of public health. They are largely responsible for the near eradication of several diseases. However, some people are vaccination averse which can lead to vaccine hesitancy. Vaccine hesitant parents are those that refuse or delay getting their children vaccinated despite the availability of vaccination services. This phenomenon often occurs despite parent’s belief that vaccines are effective. The purpose of this review was to exam available literature to identify predictors of vaccine hesitancy among parents and parental rationale for vaccine hesitancy

Sociodemographic Inequities In Nurturing Care For Early Childhood Development Across Brazilian Municipalities, Gabriela Buccini, Stefanie Eugênia Dos Anjos Coelho Kubo, Jéssica Pedroso, Juracy Bertoldo, Alberto Sironi, Marcos Ennes Barreto, Rafael Pérez-Escamilla, Sonia Isoyama Venancio, Muriel Bauermann Gubert

Environmental & Global Health Faculty Research

Providing an enabling nurturing care environment for early childhood development (ECD) that cuts across the five domains of the Nurturing Care Framework (i.e., good health, adequate nutrition, opportunities for early learning, security and safety and responsive caregiving) has become a global priority. Brazil is home to approximately 18.5 million children under 5 years of age, of which 13% are at risk of poor development due to socio-economic inequalities. We explored whether the Early Childhood Friendly Municipal Index (IMAPI) can detect inequities in nurturing care ECD environments across the 5570 Brazilian municipalities. We examined the validity of the IMAPI scores and …

Sociodemographic Inequities In Nurturing Care For Early Childhood Development Across Brazilian Municipalities, Gabriela Buccini, Stefanie Eugênia Dos Anjos Coelho Kubo, Jéssica Pedroso, Juracy Bertoldo, Alberto Sironi, Marcos Ennes Barreto, Rafael Perez-Escamilla, Sonia Isoyama Venancio, Muriel Bauermann Gubert

Social and Behavioral Health Faculty Research

Providing an enabling nurturing care environment for early childhood development (ECD) that cuts across the five domains of the Nurturing Care Framework (i.e., good health, adequate nutrition, opportunities for early learning, security and safety and responsive caregiving) has become a global priority. Brazil is home to approximately 18.5 million children under 5 years of age, of which 13% are at risk of poor development due to socio-economic inequalities. We explored whether the Early Childhood Friendly Municipal Index (IMAPI) can detect inequities in nurturing care ECD environments across the 5570 Brazilian municipalities. We examined the validity of the IMAPI scores and …

Artificial Nightlight Alters The Predator–Prey Dynamics Of An Apex Carnivore, Mark A. Ditmer, David C. Stoner, Clinton D. Francis, Jesse R. Barber, James D. Forster, David M. Choate, Kirsten E. Ironside, Kathleen M. Longshore, Kent R. Hersey, Randy T. Larsen, Brock R. Mcmillan, Daniel D. Olson, Alyson M. Andreasen, Jon P. Beckmann, P. Brandon Holton, Terry A. Messmer, Neil H. Carter

Life Sciences Faculty Research

Artificial nightlight is increasingly recognized as an important environmental disturbance that influences the habitats and fitness of numerous species. However, its effects on wide‐ranging vertebrates and their interactions remain unclear. Light pollution has the potential to amplify land‐use change, and as such, answering the question of how this sensory stimulant affects behavior and habitat use of species valued for their ecological roles and economic impacts is critical for conservation and land‐use planning. Here, we combined satellite‐derived estimates of light pollution, with GPS‐data from cougars Puma concolor (n = 56), mule deer Odocoileus hemionus (n = 263) and locations of cougar‐killed …

Surveillance Of Root-Associated Microbiome Of Oxalogenic Colocasia Esculenta (Linn) Plant Reveals Distinct Bacterial Species Diversity, Mangesh Vasant Suryavanshi, Nidhi Bharti, Shrikant Subhash Bhute, Vipin Chembili, Pooja Chavan, Yogesh Shripad Shouche

Life Sciences Faculty Research

Oxalic acids are widely distributed in tissues of various plants that can exacerbate the effect on other plant-grazing animals including humans. Bacterial communities had been demonstrated to specify with the rhizosphere of host type and which can differ with oxalogenic plant. The present study has been conducted with the primary objective of understanding the root-associated microbial communities in Colocasia esculenta, an oxalogenic plant and to recognize possible bacterial species that present the potential of having their capability to metabolize oxalates. Of the 852 sequences obtained, 311 corresponded to rhizosphere (S), 250 to rhizoplane (P) and 291 were from non-rhizospheric (NS) …

Spatiotemporal Epidemiology Of Varicella In Chongqing, China, 2014-2018, Hua Zhu, Han Zhao, Rong Ou, Qing Zeng, Ling Hu, Hongfang Qiu, Manoj Sharma, Mengliang Ye

Environmental & Global Health Faculty Research

Although immunization against varicella using vaccines has been proven to be significant and effective in the past decades, varicella remains a major public health concern for many developing countries. Varicella vaccination has not been introduced into routine immunization programs in China, and varicella outbreaks have continued to occur. Taking the city of Chongqing, which has a high prevalence of varicella, as an example, this study explored the spatiotemporal epidemiology of varicella. Based on the reported data of varicella cases from 1 January 2014 to 31 December 2018 in Chongqing, hot spots and space-time clusters of varicella were identified using spatial …

Assessing Minimal-Input Restoration Strategies For Desert Soil And Vegetation Restoration, Audrey Jean Rader

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Mojave and Sonoran Deserts have been negatively impacted by anthropogenic disturbances. Considering that these ecosystems may recover on millennial timescales, research has shown that restoration techniques can be fairly successful in initiating long-term recovery processes in these sensitive environments. However, uncertainty remains as to which techniques are effective in different circumstances, such as in different climates or across different soil properties, and which techniques may best avoid unintended consequences, such as facilitating non-native plants. To reduce fugitive dust as a human health hazard, increase soil stability, and enhance wildlife habitat, further work is necessary to develop restoration techniques for …

Beyond Genetics: Addressing Activity In Microbial Ecology, Scott Christopher Thomas

UNLV Theses, Dissertations, Professional Papers, and Capstones

The field of microbial ecology is on the cusp of another revolution, one that uses synergy to address the limitations of previous studies. My dissertation is representative of the new era of research to come, through combining the latest technological advances with established classical methods to provide a more complete understanding of microbial ecosystems. In my first study, I evaluate the conservation of central carbon metabolic pathways and activity along a temperature and diversity gradient (60-95 ℃) through the use of 16S rRNA gene amplicon data, metagenome sequencing, and position-specific 13C-labeled metabolite probing. In my second study, I provide the …

Effectiveness Of Community Health Workers In Healthcare Delivery: Evidence From The Field, Mohammad Shahbazi Professor, Mukesh Kumar, Anthony Mawson, Donna Antoine Lavigine, Cassandra Dove

Journal of Health Disparities Research and Practice

Evidence suggests that health care in the United States could benefit from including the services of Community Health Workers (CHW), provided through Community Health Houses, in the delivery of care. This research project evaluated the impact of three newly-established Health Houses and the services provided to patients by Community Health Workers at three locations in the Mississippi Delta. The patients were current enrollees in the Medicare administered by United Healthcare. The program began in February 2014 and continued through September 2015. After analyzing data for payments made for each enrollee, emergency room visits and hospital admissions for the years of …

Nutrition Transition Of Hadza Foragers: Implications For Juvenile Behavior, Trevor Pollom

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Hadza foragers of Tanzania are undergoing early stages of nutrition transition and an increased level of market integration. Accompanying these shifts is a significant change in diet composition with greater access to maize, wheat, and other domesticated cultigens, even in the most remote bush camps. Despite the rapid rate of nutrition transition, few studies have attempted to quantify the possible effects this transition is having on Hadza diet or foraging behaviors. Here, we attempt to fill this gap in the literature by reporting results of a mixed methods cross-sectional study on juvenile foragers taken from two time points, 2005 …

Race And “Hotspots” Of Preventable Hospitalizations, Caryn N. Bell, Janice V. Bowie, Roland J. Thorpe Jr.

Journal of Health Disparities Research and Practice

Abstract

Preventable hospitalizations (PHs) are those for ambulatory care-sensitive conditions that indicate insufficiencies in local primary healthcare. PH rates tend to be higher among African Americans, in urban centers, rural areas and areas with more African American residents. The objective of this study is to determine geographic clusters of high PH rates (“spatial clusters”) by race. Data from Maryland hospitals were utilized to determine the rates of PHs in zip code tabulation areas (ZCTAs) by race in 2010. Geographic clusters of ZCTAs with higher than expected PH rates were identified using Scan Statistic and Anselin’s Local Moran’s I. 10 PH …

Climate Change And Eutrophication: A Short Review, Mohammad Nazari-Sharabian, Sajjad Ahmad, Moses Karakouzian

Civil and Environmental Engineering and Construction Faculty Research

Water resources are vital not only for human beings but essentially all ecosystems. Human health is at risk if clean drinking water becomes contaminated. Water is also essential for agriculture, manufacturing, energy production and other diverse uses. Therefore, a changing climate and its potential effects put more pressure on water resources. Climate change may cause increased water demand as a result of rising temperatures and evaporation while decreasing water availability. On the other hand, extreme events as a result of climate change can increase surface runoff and flooding, deteriorating water quality as well. One effect is water eutrophication, which occurs …

Flood Risk Assessment Using The Updated Fema Floodplain Standard In The Ellicott City, Maryland, United States, Ranjeet Thakali, Ranjit Bhandari, Giles-Arnaud Arif-Deen Kandissounon, Ajay Kalra, Sajjad Ahmad

Civil and Environmental Engineering and Construction Faculty Research

Every Year, flooding causes a calamitous impact on the people, economy, and environment all over the world. In recent years, the flood-related damages have been increasing in the United States regardless of several investments in the flood control measures. Floodplain mapping is an important tool for management that aids in the planning of infrastructures within the floodplain zone. With the magnifying effects of climate change on the hydrological cycle the study of floodplain is becoming a key tool in the water management. Federal Emergency Management Agency has recently updated their floodplain standard as per the presidential executive order 2015 on …

Sex Disparities In Access To Acute Stroke Care: Can Telemedicine Mitigate This Effect?, Catherine Wolff, Amelia K. Boehme, Karen Albright, Tzu-Ching Wu, Michael Mullen, Sean Savitz, Charles Branas, James Grotta, Brendan Carr

Journal of Health Disparities Research and Practice

Background: Women have more frequent and severe ischemic strokes than men, and are less likely to receive treatment for acute stroke. Primary stroke centers (PSCs) have been shown to utilize treatment more frequently. Further, as telemedicine (TM) has expanded access to acute stroke care we sought to investigate the association between PSC, TM and access to acute stroke care in the state of Texas.

Methods: Texas hospitals and resources were identified from the 2009 American Hospital Association Annual Survey. Hospitals were categorized as: (1) stand-alone PSCs not using telemedicine for acute stroke care, (2) PSCs using telemedicine for acute stroke …

Ecosystem Response To Recent Climate Change In Alpine Environments, Patrick Shawn Sawyer

UNLV Theses, Dissertations, Professional Papers, and Capstones

Recent variations in meteorological conditions indicate the earth’s climate is changing in ways that can impact delicate ecological balances in sensitive regions. These impacts threaten the essential services provided by such ecosystems. Determining how climate changes are affecting the biosphere is essential to adapt and mitigate harmful consequences. In order to mitigate the negative effects of climate change and adapt to shifting ecological resource constraints, it is imperative to locate such changes and determine vulnerability of ecological resources to changing environmental conditions.

Identifying climate driven ecological changes faces numerous challenges given the reliance on vegetation indices as the primary measure …

Attributes Of A Breeding Population Of Peregrine Falcons Associated With Reservoirs On The Colorado River, Joseph G. Barnes, Ross D. Haley, Daniel B. Thompson, Jef R. Jaeger

Life Sciences Faculty Research

We describe results from a comprehensive effort to survey and monitor Peregrine Falcons (Falco peregrinus) breeding in Lake Mead National Recreation Area (LMNRA) from 2006–2010. We identified 37 breeding territories, and the annual occupancy rate averaged 94%. Pooled over time, breeding success was 72%, and average reproductive output was 1.8 young per nesting attempt. The closest distance between eyries from neighboring territories was 1.2 km; the lowest annual mean nearest-neighbor distance (NND) was 6.3 km. No relationship was apparent between NND and breeding success or reproductive output. Nesting attempts occurred twice as often in eyries with a north-facing (68%) aspect …

Keeping In Touch: Exchange As An Adaptive Strategy In Southern Nevada, Timothy Joshua Ferguson

UNLV Theses, Dissertations, Professional Papers, and Capstones

Archaeologists have always wondered about the extent of vessel movement in the American Southwest. Identifying vessel movement allows for the study of social interactions across a region and the role of ceramics in the adaptive processes of agriculturalists living in marginal, highly variable environments. In many instances, exchange may act as a way to reduce the risk of resource shortfalls by creating social ties in other areas. This research investigated the changing risk reduction strategies of households in the lowland Virgin region of southern Nevada by using geochemical methods to trace the exchange of locally produced pottery. It was hypothesized …

A Systematic Review Of Pregnancy Prevention Programs For Minority Youth In The U.S.: A Critical Analysis And Recommendations For Improvement, Sarah B. Maness, E R. Buhi

Journal of Health Disparities Research and Practice

African American and Latino youth experience disproportionate rates of both intended and unintended pregnancy in the United States. A public health priority to ameliorate the high rates among this population has been the creation and proposed expansion of pregnancy prevention programs designed specifically for minority youth. However, little is known about the role of incorporating cultural components into program curricula. To better understand the components and outcomes of existing programs for this population, this systematic review analyzed published outcome evaluations of adolescent pregnancy prevention programs for minority youth. This review of literature published from January 2002 to June 2012 and …

Interactive Effects Of 1, 25-Dihydroxyvitamin D3 And Soy Protein Extract (Spe) On Oral Cancer Growth In Vitro: Evidence For Potential Functional Relationships, Karl Kingsley, Mark A. Keiserman, Christine Bergman

Dental Medicine Faculty Research

No abstract provided.

Oral Cancer Risk And Vitamin D Status, Intake And Supplementation: A Review, Karl Kingsley, C. Bergman, M. Keiserman

Dental Medicine Faculty Research

No abstract provided.

Understanding Effects Of Changes In Land Use, Environmental Parameters, Habitat Characteristics On The Great Basin Aquatic Invertebrates Using Ecological Stoichiometric Theory, Knut Mehler

UNLV Theses, Dissertations, Professional Papers, and Capstones

Many freshwater ecosystems in the Great Basin have undergone dramatic alteration over the past decades due to groundwater withdrawal, water diversion and changes in land use. These changes have affected benthic food web dynamics by altering the availability of chemical key elements for primary and secondary producers, by loss of biodiversity and extinction of endemic species. However, only few studies are available that addresses the link between changes in land use, habitat characteristics and its effects on benthic macroinvertebrates (BMI) communities comprehensively and little attention has been given to integrating physiochemical aspects to link ecosystem functions.

This dissertation analyzes the …

A Comprehensive Research Framework For Geographic Parthenogenesis In Whiptail Lizards (Genus Aspidoscelis), Adam Leland

UNLV Theses, Dissertations, Professional Papers, and Capstones

One of the most compelling topics in biology has been the ubiquity of sexual reproduction in living organisms. Because the ecological and evolutionary advantages of sex are well founded, those organisms that reproduce asexually remain enigmatic. Parthenogenesis, the clonal reproduction of an all-female species without the need for males, is a relatively common form of asexual reproduction in vertebrates, and has been subject of numerous academic investigations. Many parthenogenic organisms also share aspects of their geographic distributions, such as inhabiting higher latitudes, higher altitudes, islands or island-like habitats, xeric environments, and marginal, disturbed or ecotonal habitats relative to their sexual …

Environmental, Human And Socioeconomic Characteristics Of Pedestrian Injury And Death In Las Vegas, Nv, Jennifer Renee Pharr, Courtney Coughenour, Timothy J. Bungum

Environmental & Global Health Faculty Research

Background: Pedestrian crashes are a deterrent to physical activity, especially walking. The purpose of this study was to analyze pedestrian crash characteristics in Clark County, NV and to determine if there was a significant relationship between pedestrian crashes and socio-economic variables.

Methods: Police reported pedestrian crash data collected between January 2009 and December 2011 were analyzed. Frequencies and rates for pedestrian crashes, injuries and deaths were calculated for environmental and human characteristics. Chi square tests were utilized to determine if there were significant differences in environmental and human characteristics for pedestrian injuries and deaths. Zero-inflated negative binomial (ZINB) regression analysis …