Digital Commons Network^™

Enhancing Youth Awareness Of Protecting The Environment: What We Save, Saves Us, Alexa Hanson

Capstone Projects and Master's Theses

By incorporating environment protection within our daily routines, children can become more aware of how to reduce waste, save electricity, and to understand the importance of why we should protect nature. The project executed ways for the children to realize that simple changes in their daily routines, can make an impact in our world. A simple task, like turning off the water when brushing your teeth can help reduce the amount that is being used within the households. Each household is different in how they contribute to protecting the Earth so it is crucial to let the children know that …

Digital Divide In Monterey County, Vanessa Diaz

Capstone Projects and Master's Theses

The Monterey County Health Department Planning, Evaluation and Policy (PEP) Unit's goals are to empower the community, enhance public health and safety, ensure access to care, and engage the workforce. MCHD encourages all employees to understand social justice and equity for low-income and communities of color. Understanding and addressing health inequalities and justice in the county can improve overall health for everyone. The digital divide during the COVID-19 pandemic impacted too many Monterey County residents. The lack of computer access, computer literacy, and internet access may have impacted vaccination rates and even delayed COVID-19 resources. Utilizing the Monterey County COVID-19 …

Veganic Farming In The United States: Farmer Perceptions, Motivations, And Experiences, Mona Seymour, Alisha Utter

Urban and Environmental Studies Faculty Works

Veganic agriculture, often described as farming that is free of synthetic and animal-based inputs, represents an alternative to chemical-based industrial agriculture and the prevailing alternative, organic agriculture, respectively. Despite the promise of veganic methods in diverse realms such as food safety, environmental sustainability, and animal liberation, it has a small literature base. This article draws primarily on interviews conducted in 2018 with 25 veganic farmers from 19 farms in the United States to establish some baseline empirical research on this farming community. Its qualitative perspectives illuminate farmer perceptions of and experiences with veganic growing, including definitions, knowledge acquisition, values, and …

Rape Myth Acceptance And Fear Of Sexual Victimization On College Campuses, Vivian Assuncao Portugal Dos Santos

Masters Theses and Doctoral Dissertations

Numerous studies have identified individual characteristics associated with fear of crime and more specifically, fear of sexual assault. Research often focuses on the relationship between sex and fear of crime with findings consistently demonstrating that women are more fearful of being victimized compared to men (Lane et al., 2009). Scholars have attempted to explain this heightened level of fear by employing numerous theoretical explanations, including the shadow of sexual assault hypothesis. However, few studies have considered how other factors beyond demographic and situational characteristics influence fear of sexual assault. Notably, individual perceptions and beliefs about rape, including rape myths have …

Police Perceptions And Parenting Styles Among Black Parents Of Miami-Dade County, Amber E. Roach

Masters Theses

A person’s perception of something or someone does not develop without external factors affecting the individual. Experiences and lessons people have learned from a young age have molded their perception of the world. One of those lessons is what is considered correct and what is not. In the Black American community, this is accompanied by the “talk”. This “talk” is shaped by past experiences with the police towards minority groups, specifically, Black Americans. This paper discusses how parenting styles, race, and authority intersect. The purpose of this paper is to examine the beginnings of one’s life, the lessons they are …

Growth Kinetics Of Salmonella Spp. During Post-Harvest Storage Of Fresh And Fresh-Cut Papaya, Amandeep Singh

Theses and Dissertations

Fresh produce safety is major concern in United States. Fresh produce has been associated with numerous food-borne outbreaks each year. Salmonella has been a recurring issue in the papaya industry. Since 2010, imported papayas have been implicated in 8 multistate outbreaks associated with Salmonella spp. causing 480 illnesses, 113 hospitalization and 3 deaths. The main reason behind this problem is as fresh papaya is grown on fields where they are constantly exposed to preharvest microbial contamination through contaminated irrigation water, agricultural soil, raw manure and/or feces deposited by intruding domestic or wild animals. Moreover, majority fresh papaya is also consumed …

The Skeletal Structure Of Hot Mix Asphalt And The Effects Of Fiber Additives, Samantha A. Avila

Theses and Dissertations

Hot mix asphalt (HMA) has proven to be successful in providing a proper paving surface for transportation services throughout the world. Asphalt pavement could be altered as the gradation of the mixture is adjusted. For instance, mixtures could vary from Dense Graded (DG) that contain a fairly even percentage of all aggregate size allowing for a more compact fit to Stone Matrix Asphalt (SMA) where the coarse aggregate compromise the main skeleton while fine aggregate fills the voids. This study investigates the effects of fibers and skeletal structures on mechanical properties of HMA. Two types of fiber additives are tested …

Bullet-Proof Boll Weevil: The History Of Boll Weevil Eradication, Evan A. Berg

Theses and Dissertations

Farmers and entomologists have all experimented with various methods to find the best way to defeat the United States' boll weevil. The techniques themselves, while expansive, can be examined within the scope of the years that they were used. This provides an exciting insight into how cotton pest management became more complex as the decades moved on and revealed how the science of cotton pest management evolved to deal with the boll weevil and other future cotton threats.

Evolutionary Development Study Of Firebrat (Thermobia Domestica), Luis Cantu Jr.

Theses and Dissertations

As most evolutionary development studies regarding wing origin take place using insects taxonomically closer to model organism, Drosophila melanogaster, there is a need of expanding studies to lower clades. While D. melanogaster is higher phylogenetically, basal clades would allow for a historical perspective of what occurs within the gene flow of conservative biomarkers. Further understanding of wings and flight would allow for a clearer understanding of how the migration of insects from sea to land has allowed them to become one of the most speciose taxa. Through the study of Thermobia Domestica, part of the Zygentoma, we expand on comprehension …

Characterization Of Soil Nematode Community As Influenced By Weedy Plants And Edaphic Properties, Orlando Garcia

Theses and Dissertations

Nematodes are one of the most critical species globally as they are part of most nutrient recycling. While nematodes play a vital role in nutrient cycling, little is known about them from an ecological standpoint. The majority of current research has focused on a singular component of the community, being those of herbivore/plant-parasitic nematodes. In this study, the community shifts of the nematode trophic groups were analyzed as influenced by native and invasive grasses species in the Lower Rio Grande Valley (LRGV) with the addition of edaphic soil properties.

In our study, the results indicate changes in the composition of …

A Gis-Based Model To Assess On-Site Sewage Facility (Ossf) Contamination Risk To Local Water Resources, Alvaro Garcia

Theses and Dissertations

In a collaborative effort between Texas Water Resources Institute (TWRI), Cameron County Public Health (CCPH), Texas A&M AgriLife Extension (TAMAE), and the University of Texas Rio Grande Valley (UTRGV), a GIS database that includes relevant OSSF information, such as location, system age, lot size, and other important parameters was created.

This OSSF database, along with publicly available GIS data, was used to create an integrative GIS-based risk assessment model where OSSF risk parameters were assigned a risk factor and combined into a spatial contamination risk for surrounding areas and their receiving waterbodies. Parameters were broken down into two categories: environmental …

Early Embryology In Collembola With An Emphasis On Wing Development, Samantha A. Gonzalez

Theses and Dissertations

The primary objective of this study was to further the understanding of the wing origin in insects. Currently there are several theories which are popular such as the tergum theory, the pleural plate theory, and the dual theory of wing origin. Studies for these theories have been done on crustaceans, the ancestors to modern day insects. By utilizing a pre insect hexapod, it may be possible to better understand the transition to insect wings. Members of the Collembola species Hypogastrurid are one of these pre-insect hexapods which may provide a clue into origins of wing development. During this study, the …

Cowboy Conversations, Abraham Garza

Theses and Dissertations

I have always had a profound interest in the past; how that past affects the present, and ultimately, anticipating how the present will affect the future. Circumstances change, but the lessons we’ve learned will, inevitably, determine how we handle impending events. Using fiction as a platform, my intent is to reveal, through each chapter, how one’s past dictates future decisions.

I have been working with a vaquero, my wife’s grandfather, who was raised on different South Texas ranches. Taking odd jobs from stall boy to ranch hand, and horse trainer, his unique experiences will illustrate period-based scenarios that emphasize his …

Characteristics Analysis Of Electrochemical Impedance Spectroscopy (Eis) For Different Electrode Patterns, Shanzida Kabir

Theses and Dissertations

Electrochemical impedance spectroscopy (EIS) is a rapidly developing technique used in characterizing materials and interfaces. Using equivalent circuits as models can determine the electrical properties of heterogeneous systems like membranes or electrolytes. Different electrochemical processes like the electron transfer rate of a specific reaction or the capacitive behavior of the system, or even the diffusion-limited response can coincide. EIS is applicable to determine different electrochemical processes that can happen simultaneously. The purpose of this research is to find the optimal operating range for other AC electrokinetic mechanisms. Analysis of EIS can be helpful in both fundamental examinations of electrokinetic transport …

Duet Phonology And Syntax Of The Red-Crowned Parrots In South Texas, Abigail Pozulp

Theses and Dissertations

Bird behavioral interaction systems show a preference for temporal precision. This preference is exemplified in the way many species avoid masking of vocal signals. Antiphonal duetting in songbirds suggest that overlapping notes are a sign of poor temporal coordination which can signify a weak pairbond, a possible cue for conspecifics seeking to usurp territories or mates. However, parrots (Psittacidae) are accomplished yet understudied duetters in nature. I recorded antiphonal duets produced by a wild population of red-crowned parrots (Amazona viridigenalis) in Brownsville, Texas. Temporal and acoustic variation of signals was assessed within and across a sample of mated …

Development Of Vegetable Oil-Based Nano-Lubricants Using Montmorillonite Clay (Mmt) Nanoparticles As Lubricant Additives, Md Mashfiqur Rahman

Theses and Dissertations

Because of the environmental impact and price volatility, there has been a growing concern on the use of petroleum-based lubricants. This issue has stimulated research into the development of biodegradable lubricants like vegetable oils. In this study, the tribological and rheological behavior of sunflower, peanut, and corn oils modified with Montmorillonite nanoclay (MMT) as lubricant additives were evaluated at various concentrations. A custom-made block on ring tribotester was used to evaluate the wear and friction characteristics of the nano-lubricants, following the ASTM G-077-05 standard. The effects of concentration and shear rate on shear viscosity were studied using a parallel plate …

Development Of A Novel Strategy To Improve Checkpoint Immune Response In Pancreatic Cancer, Poornima Devi Shaji

Theses and Dissertations

Pancreatic Cancer is the 3rd lethal causing cancers in United States with a survival rate less than 5-7%. In advanced unresectable pancreatic cancer, treatment options are restrained to surgery because of its extreme aggressiveness. Immunotherapy, one of the current advanced treatments has shown promising response in other cancers. However, this therapy is limited in pancreatic cancer due to desmoplasia and fibrotic tumor microenvironment (TME).

Our superparamagnetic iron oxide nanoparticles (SPIONS) of curcumin (Curcuma longa, principal curcuminoid of turmeric) have potential ability to inhibit desmoplasia and tumor stroma with an increased bioavailability. This would soften up the tumors for …

Microwave Spectroscopy Of Cyclohexanecarboxylic Acid, Chlorosulfonic Acid, And Its Interaction With Water, Diego Erik Rodriguez

Theses and Dissertations

This study combines computational chemistry and microwave spectroscopy to simulate the behavior of two molecules: cyclohexanecarboxylic acid and chlorosulfonic acid. In this thesis, cyclohexanecarboxylic acid will be observed on its own. On the other hand, chlorosulfonic acid will be observed on its own as well as its interaction with one, two, and three water molecules. Chapter 1: Introduction will provide insight on published literature related to cyclohexanecarboxylic acid, chlorosulfonic acid, and perfluoroalkyl substances. Chapter 2: Computational Chemistry will provide the reader with information about the foundation of computational chemistry including theory and development of the science. Chapter 3: Microwave Spectroscopy …

Factors Influencing Intent To Take A Covid-19 Test In The United States, Sheila Rutto

Theses and Dissertations

In 2020, COVID-19 became the first pandemic in the world’s history that brought the entire world to an abrupt and unexpected halt. Since the first reported case of the disease to date, the novel coronavirus has been able to wreak havoc in literary every corner of the globe and left an ever-growing number of unprecedented fatalities. The normal way of life has been disrupted, and the level of uncertainty about the end of this pandemic continues to manifest to many. Due to the urgency to bring this pandemic under control, medical officers have been able to recommend actions that people …

The Impacts And In-Depth Study Of The Environmental Contaminant, Perfluorooctane Sulfonic Acid, And Its Interactions With Water, Karla Veronica Salazar

Theses and Dissertations

Perfluorooctanesulfonic acid (PFOS), similar to perfluorooctanoic acid (PFOA), is a synthetic chemical that has been classified as a persistent organic pollutant (POP) by the Stockholm Convention since 2009. Due to the wide previous usage, high stability, high bio-accumulative, and low degradative properties is the reason that PFOS has been found in several compartments of the environment including ocean water, ground water, air, and sediments. Due to the strong interactions generated by the sulfonic acid end, this compound has a tendency to stay in the environment for long periods of time and has proved to be difficult in the removal from …

Home Range Dynamics And Juvenile Dispersal Of Gray Hawks In The Lower Rio Grande Valley, Michael Stewart

Theses and Dissertations

Using GPS-GSM transmitters I determined when 14 juvenile Gray Hawks (Buteo plagiatus) in the Lower Rio Grande Valley of Texas fledged from their natal areas and how far they traveled once they dispersed. These transmitters also allowed me to calculate home range sizes for 22 adults. Additionally, with the GPS-GSM transmitters and 15 VHF transmitters, I discovered that adult Gray Hawks in the study area remained in their territories year-round. Home range sizes were calculated using the minimum convex polygon estimator, the estimation of kernel home-range, and the estimation of kernel Brownian bridge home-range. The same three methods allowed me …

Ad Infinitum: The Bourgeois Construction Of An American Lady, Miriam M. Cepeda

Theses and Dissertations

This thesis explores the emergence of the Bourgeois culture in Antebellum America during the transition of nineteenth century America into what we refer to as “modern-day America.” This period is crucial in American history as ideological concepts developed as the nation industrialized, thus creating the nation’s identity. In doing so, gender roles were voraciously prescribed with a focus on women’s sexuality as a focal point for Victorian discourse. Unlike prior to the Revolution, which gender roles were previously assumed, by the mid-nineteenth century, modes of surveillance are apparent in sermons, medical treatises, Victorian periodicals and literature, in which ideological productions …

Media Paratext And Constitutional Interpretation, Benjamin J. Priester

Faculty Articles

In the fields of media studies and fan studies, the concept of paratext is an analytical paradigm for understanding how audiences consume and interpret media texts, such as a novel or movie. Amid today's media-rich society, it is all but impossible to encounter a media text in isolation. Rather, we also invariably interact with a wide variety of associated paratexts, from official materials like trailers or marketing to unofficial materials like reviews or fan reactions, which play a role in shaping our interpretation of the core media text. This concept of media paratext provides a compelling analogy for constitutional interpretation. …

Study Of Certain Biomarkers In Iraqi Female Patients With Breast Cancer, Abeer M. Hussain, Ali Hussein Mohammed Al-Khafaji, Alia Hussain Ali, Haider Latif Mohammed

Baghdad Science Journal

The prospective study has been designed to determine some biomarkers in Iraqi female patients withbreast cancer. The current study contained 30 patients whose tissue samples have been collected fromhospitals in Medical City in Baghdad after consent patients themselves and used immunohistochemicaltechnique to determine these markers. The results showed a significant correlation between ER and PR tissuemarkers (Sig = 0.000) and a significant correlation between cyclin E phenotype and cyclin E intensity (Sig =0.001).

Association Of Circulating Microrna-142-3p With Graves Disease, Rashad Ayad Al-Heety, Hayfaa S Al-Hadithi

Baghdad Science Journal

This study aimsto investigate the possible role of circulating microRNA-142-3p (miR-142-3p) in the development of graves disease (GD) and its association withtheantibody directed againstthyroid stimulating hormone receptor (TSHR-Ab) production in patients with GD. Forty patients with positive TSHR-Ab enrolled in this study were divided,based on treatment,into (22 untreated (newly diagnosed) and 18 treated patients)and based on family history(30 with positive family history and 10 with negative family history). In addition to forty healthy subjectswith sex and age matching asacontrol group. The expression level of circulating miR-142-3p was determined by two steps reverse transcription polymerase chain reaction (RT-PCR) technique. Results showthat …

The Christian Right In Translation: Christian Conservative Discourse In Contemporary American Literature, Elizabeth Richardson Duke

English Theses and Dissertations

Religion in contemporary American politics and religion in contemporary American Literature: are they independent phenomena? Literary scholars have largely assumed so. Scholars have attended to nontraditional, liberal religion in postwar American literature, while overlooking how this literature represents and critiques the rise of the Christian Right. Since white evangelical and fundamentalist Christians allied with the Republican party in the late 1970s, Christian conservatives have transformed American politics. As the GOP’s most influential interest group, the Christian Right has set the terms for many of the last four decades’ most contentious and consequential debates. Historians, political scientists, and contemporary American writers …

The Relationship Between Trauma, Attachment, Self-Compassion, And Emotion Regulation: A Structural Equation Model, Susanna Jane Turner

Dissertations

Previous research has examined the relationship between trauma, attachment, selfcompassion, and emotion regulation, but never with an incarcerated population. Given the link between emotion regulation and illegal behaviors, it may be helpful to more fully understand this relationship in order to lay the groundwork for future intervention research. I gathered data from 378 participants. I then examined the relationships between these constructs on data from 204 participants, the number that remained after cleaning the data, by way of a structural equation model. Findings suggest that greater experiences of trauma may lead to insecure attachment styles, impacting individuals’ ability to trust …

How Couples Youtube Channels Forge "Friendships" With Their Viewers: A Thematic Textual Analysis, Marisol Botello

Electronic Theses, Projects, and Dissertations

A “couples YouTube channel” is a YouTube channel where a real-life romantic couple posts videos about their relationship. On YouTube there are hundreds of such channels, and some are so popular that those couples actually make a living creating and sharing their stories. How do they do this? More specifically: what marketing techniques, specifically storytelling practices, do these YouTube couples use to resonate with audiences?

This exploratory, qualitative study seeks to answer this question through a thematic textual analysis of three couples YouTube channels. Using narrative theory and parasocial interaction as theoretical frameworks, the study interpretively analyzes a total of …

The Role Of The Erbb Signaling Pathway In Cardiovascular Progenitor Cell-Based Repair, Christopher Ramos

Electronic Theses, Projects, and Dissertations

Adult mammalian hearts lack self-renewal and proliferative capabilities necessary for cardiovascular regeneration. Current treatments using cardiac progenitor cells (CPCs) for cell-based repair do not restore cardiac function in patients who experience a myocardial infarction (MI). Our laboratory has been studying Islet-1+ neonatal CPCs as a promising candidate for cell-based repair due to their ability to significantly improve cardiac function after MI in sheep. The current study addresses the hypothesis that the ERBB pathway is linked to the Hippo-pathway to activate YAP1 by the involvement of an autocrine loop that upregulates neuregulin (NRG). In our sheep model of MI and cardiovascular …

A Small Molecule Produced By Lactobacillus Species Blocks Candida Albicans Filamentation By Inhibiting A Dyrk1-Family Kinase, Jessie Macalpine, Martin Daniel-Ivad, Zhongle Liu, Junko Yano, Nicole M. Revie, Robert T. Todd, Peter J. Stogios, Hiram Sanchez, Teresa R. O’Meara, Thomas A. Tompkins, Alexei Savchenko, Anna Selmecki, Amanda O. Veri, David R. Andes, Paul L. Fidel, Nicole Robbins, Justin Nodwell, Luke Whitesell, Leah E. Cowen

School of Dentistry Faculty Publications

The fungus Candida albicans is an opportunistic pathogen that can exploit imbalances in microbiome composition to invade its human host, causing pathologies ranging from vaginal candidiasis to fungal sepsis. Bacteria of the genus Lactobacillus are colonizers of human mucosa and can produce compounds with bioactivity against C. albicans. Here, we show that some Lactobacillus species produce a small molecule under laboratory conditions that blocks the C. albicans yeast-to-filament transition, an important virulence trait. It remains unexplored whether the compound is produced in the context of the human host. Bioassay-guided fractionation of Lactobacillus-conditioned medium linked this activity to 1-acetyl-β-carboline (1-ABC). We …