Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Electronic Theses and Dissertations

Discipline
Institution
Keyword
Publication Year
File Type

Articles 5011 - 5040 of 15384

Full-Text Articles in Entire DC Network

Interactions Of Arbuscular Mychorrhizal Fungi And Bacterial Endophytes On Disease Resistance Of Common Root Pathogens In Wheat, Janice L. Eibensteiner Jan 2019

Interactions Of Arbuscular Mychorrhizal Fungi And Bacterial Endophytes On Disease Resistance Of Common Root Pathogens In Wheat, Janice L. Eibensteiner

Electronic Theses and Dissertations

Arbuscular mycorrhiza, a symbiosis between plants and fungi, help plants to capture nutrients such as phosphorus (P), nitrogen (N) and other micronutrients from the aggre in exchange for up to 20% of the fixed carbon (C) from the plant. In addition, arbuscular mycorrhizal (AM) fungi can improve the resistance against abiotic (drought, salinity), and also biotic (pathogen) stresses. Bacterial endophytes promote plant growth and yield by fixing N2 from the atmosphere, assimilating N and transfer it to the plant. Bacterial endophytes can also solubilize phosphate and stimulate plant defense responses, suppressing pathogens. The host plant provides sucrose and a favorable …


Integration Of Molecular Techniques For The Investigation Of Bovine Respiratory Disease, Amy Abrams Jan 2019

Integration Of Molecular Techniques For The Investigation Of Bovine Respiratory Disease, Amy Abrams

Electronic Theses and Dissertations

Bovine respiratory disease (BRD) is the leading cause of morbidity and mortality in the cattle industry. The complexity of host, pathogen, and environmental factors contributing to the incidence of BRD necessitate a multifaceted approach to investigate BRD. A greater understanding of pathogenic and genetics factors associated with BRD would improve prevention and treatment of BRD. Due to the complexity of BRD, genetic technologies have been limited in their ability to identify a genetic basis for BRD. Pooling of DNA samples prior to extraction can increase the ability to conduct genotyping studies of complex traits. Once generated, new information and management …


Localized Transdermal Delivery Of Chemopreventive Agents To The Breast, Abdulsalam Alqahtani Jan 2019

Localized Transdermal Delivery Of Chemopreventive Agents To The Breast, Abdulsalam Alqahtani

Electronic Theses and Dissertations

Breast cancer is the second leading cause of cancer death in women. About 1 in 8 women will develop breast cancer in their lifetime. The current systemic approaches are associated with significant side effects including some life-threatening toxicity, leading to poor patient compliance. To overcome this limitation, localized transdermal drug delivery system was investigated in the current study. In addition, majority of breast cancers originate from the ducts and lobules in the breast. Therefore, localized transdermal drug delivery system can maximize drug concentration in the breast and minimize systemic adverse effects, resulting in a potential approach for preventing and/or treating …


Using Isoconversional Methods To Study The Effect Of Antioxidants On The Oxidation Kinetics Of Milk Fat, Khalid Ahmed Alsaleem Jan 2019

Using Isoconversional Methods To Study The Effect Of Antioxidants On The Oxidation Kinetics Of Milk Fat, Khalid Ahmed Alsaleem

Electronic Theses and Dissertations

Milk fat is a versatile ingredient because of its nutritional value, functionality, and flavor. During processing and storage, milk fat may undergo oxidation resulting in many undesirable changes such as unpleasant flavor and aroma, and formation of toxic compounds. A common practice to prevent the oxidation of milk fat is by the addition of antioxidants. It is worth to mention that little is known on the effect of antioxidants on the oxidation kinetics. In this work, the effect of selected antioxidants on the oxidation kinetics of anhydrous milk fat (AMF) under non-isothermal conditions was investigated. AMF with an addition of …


Increasing Accumulation Of Glyceollins In Soybeans Via Optimization Of The Fungal Incubation Process, Stephanie Wootton Jan 2019

Increasing Accumulation Of Glyceollins In Soybeans Via Optimization Of The Fungal Incubation Process, Stephanie Wootton

Electronic Theses and Dissertations

Continual use of antibiotics in the feed of food animals was viewed a solution to the problem of disease outbreaks in livestock produced in confinement operations. This practice also improved animal performance, likely due to the reduction in sub-clinical infections. Unfortunately, this practice led to a new problem, the development of antibiotic resistant microbes. This increase in antibiotic resistance reduced the direct benefits of antibiotics in animal production. Moreover, as antibiotic resistance spread from animal to human pathogens, this practice created a major public health concern. This led the FDA to enact the Veterinary Feed Directive in 2017 that greatly …


Fabrication Of Topical Film Forming Polymeric Solution For Pain Management, Maha Hani Alkurdi Jan 2019

Fabrication Of Topical Film Forming Polymeric Solution For Pain Management, Maha Hani Alkurdi

Electronic Theses and Dissertations

FFS were developed by varying the type and content of the film forming polymer. The resulting formulations were evaluated according to favorable film characteristics in vitro and ex vivo drug release profiles. Eudragit E100 was identified as a suitable release matrix for ketoprofen. In the case of diclofenac Na; however the ex vivo permeation study results failed to show a characteristic release profile for either the test formulation or the marketed formulation VOLTAREN® Gel. Nevertheless the presented work provided a rationalized way for the development and evaluation of FFS and investigated their potential as delivery systems for ketoprofen and diclofenac …


A Study On The Comparison Of Sample Location Of Pultruded Composites Exposed To Corrosive Environment, Md Mahmudul Hasan Jan 2019

A Study On The Comparison Of Sample Location Of Pultruded Composites Exposed To Corrosive Environment, Md Mahmudul Hasan

Electronic Theses and Dissertations

Composite structures may experience different environments during their prolonged service life. These environments may include corrosive, acidic or both or many others that can adversely affect the mechanical properties of the structural composites. Various studies have been done on the environmental effects on the composites but only a few are on structural shaped pultruded composites. More specifically, none of the studies tell anything about the effects of corrosive media on the locations of the structural shaped pultruded composites coupon samples. Hence, this current study focused on two primary objectives, 1) the durability characterization of structural shaped pultruded composites after an …


Gender Roles, Sexual Assertiveness, And Sexual Coercion In Lgbtq Individuals, Lavina Ying Ho Jan 2019

Gender Roles, Sexual Assertiveness, And Sexual Coercion In Lgbtq Individuals, Lavina Ying Ho

Electronic Theses and Dissertations

Sexual violence is a prominent community issue particularly within the LGBTQ+ community. The present study examined the relationships among gender roles sexual assertiveness and sexual victimization as well as sexual perpetration in a LGBTQ+ population. For most severe form of sexual violence victimization in the past year 17.6% reported having been raped. Moderated logistic regression analyses found that both gender roles and sexual assertiveness independently predicted severity of sexual victimization and perpetration. No interactions were found to predict either sexual victimization or sexual perpetration. Specifically the femininity gender role and lower levels of sexual assertiveness predicted greater likelihood for victim …


Is It Racism, Colorism, Or A Pigment Of Your Imagination? A Study On The Invisible Color Line, Yolanda Rodriguez Jan 2019

Is It Racism, Colorism, Or A Pigment Of Your Imagination? A Study On The Invisible Color Line, Yolanda Rodriguez

Electronic Theses and Dissertations

Participants were 324 self-identified ethnic/racial minority adults recruited from a southern university in the United States and an online community (MTurk workers) primarily ranging in age from 18-30 (78.4%). Participants completed a demographic questionnaire and a measure for each of the variables of interest. A moderated mediation analysis was conducted using PROCESS (Hayes 2013) model 8. It was hypothesized that acculturation modality (X) would predict skin lightening behaviors and attitudes (Y) through three mediators (M1: Discrepancy scores M2: Satisfaction with Skin Color and M3: Desire to Change Skin Color). Psychological well-being was predicted to be a moderator (W) of the …


The Independent And Combined Effects Of Hypoxia And Tributyltin On The Eastern Oyster, Crassostrea Virginica, Ann Fairly Barnett Jan 2019

The Independent And Combined Effects Of Hypoxia And Tributyltin On The Eastern Oyster, Crassostrea Virginica, Ann Fairly Barnett

Electronic Theses and Dissertations

Oysters are vital to the health of estuarine ecosystems and provide critical ecosystem services, such as water quality improvement, nursery habitat for commercially important fisheries, and shoreline stabilization. Despite their ecological and economic importance, oyster reefs are exposed to many stressors, and oyster populations in Mississippi have declined dramatically in recent years. The present study focuses on the effects of hypoxia and tributyltin (TBT) on the Eastern oyster, Crassostrea virginica. Hypoxic events are increasingly comin coastal ecosystems worldwide, and TBT is a legacy toxicant once used as an antifoulant. The effects of these stressors were assessed on adult oysters deployed …


A Study Of Cooperative Spectrum Sharing Schemes For Internet Of Things Systems, Adham Hagag Jan 2019

A Study Of Cooperative Spectrum Sharing Schemes For Internet Of Things Systems, Adham Hagag

Electronic Theses and Dissertations

The Internet of Things (IoT) has gained much attention in recent years with the massive increase in the number of connected devices. Cognitive Machine-to-Machine (CM2M) communications is a hot research topic in which a cognitive dimension allows M2M networks to overcome the challenges of spectrum scarcity, interference, and green requirements. In this paper, we propose a Generalized Cooperative Spectrum Sharing (GCSS) scheme for M2M communication. Cooperation extends the coverage of wireless networks as well as increasing their throughput while reducing the energy consumption of the connected low power devices. We study the outage performance of the proposed GCSS scheme for …


Stabilization Of Dna I-Motif Structures By 7-Aminoactinomycin D, An Anti-Tumor Drug, Justin Lane Parmely Jan 2019

Stabilization Of Dna I-Motif Structures By 7-Aminoactinomycin D, An Anti-Tumor Drug, Justin Lane Parmely

Electronic Theses and Dissertations

Alternative DNA structures are likely to form from Watson-Crick B-form DNA when antitumor drug known to bind DNA loops -- can affect the iM structure. Our results demonstrate as an i-motif (iM). While both structures are known to exist in vivo they are energetically uphill can utilize intercalating cytosine-cytosine base pairing to form a four-stranded structure known controlled by alternative DNA structures like G4s and iMs. especially during processes that involve superhelical duress. A guanosine rich strand can form a facilitate their stabilization. In this report we present data on how 7-aminoactinomycin D -- an formation. Earlier it was believed …


Cultural Influences On Body Size Ideals Among African American Women In The Mississippi Delta, Lois Marie Coleman Jan 2019

Cultural Influences On Body Size Ideals Among African American Women In The Mississippi Delta, Lois Marie Coleman

Electronic Theses and Dissertations

Results: One-on-one interviews yielded 25 cognitive maps. The maps contained a total of 169 concepts with 294 connections among them. The lowest number of variables identified on a participant’s map was 4 and the highest was 11. The lowest number of connections made on a participant’s map was 4 and the highest was 39. Through qualitative condensing and matrix addition, the 169 concepts were used to create 27 variables with 134 connections. Feedback from focus group participants resulted in the addition of 3 variables and 9 connections.


Factors Affecting Perceptions Of Cybersecurity Readiness Among Workgroup It Managers, Thomas A. Chapman Jan 2019

Factors Affecting Perceptions Of Cybersecurity Readiness Among Workgroup It Managers, Thomas A. Chapman

Electronic Theses and Dissertations

The last decade has seen a dramatic increase in the number, frequency, and scope of cyberattacks, both in the United States and abroad. This upward trend necessitates that a significant aspect of any organization’s information systems strategy involves having a strong cybersecurity profile. Inherent in such a posture is the need to have IT managers who are experts in their field and who are willing and able to employ best practices and educate their users. Furthermore, IT managers need to have awareness of the technology landscape in and around their organizations. After many years of cybersecurity research, large corporations have …


Addressing The Disparaity Of Outcomes For Economically Disadvantaged Students At Central Intermediate School: An Applied Research Study Related To The Implementation Of Avid Process, Steven Jarvis Hurdle Jan 2019

Addressing The Disparaity Of Outcomes For Economically Disadvantaged Students At Central Intermediate School: An Applied Research Study Related To The Implementation Of Avid Process, Steven Jarvis Hurdle

Electronic Theses and Dissertations

The purpose of this applied action research study was to close the achievement gap between economically disadvantaged (ED) students and their non-disadvantaged peers (non-Ed) through the implementation of the Advancement Via Individual Determination (AVID) system of processes. This study utilizes both quantitative and qualitative data to answer four core research questions. While the initial implementation of the plan failed to attain the targeted goal of closing the achievement, there were positive indicators for future success. ED students did appear to be effectively engaged with the AVID implementation. This engagement was validated through data about student participation in key AVID strategies, …


Food Insecurity And Produce Behaviors Of Adults With Children In Rural, Appalachian Mississippi, Tiffany Shirley Jan 2019

Food Insecurity And Produce Behaviors Of Adults With Children In Rural, Appalachian Mississippi, Tiffany Shirley

Electronic Theses and Dissertations

Adults living in food insecure households consume fewer fruits and vegetables than adults living in food secure households (Hanson & Connor, 2014). The purpose of this study was to examine differences in fruit and vegetable behaviors (intakes; perceptions) of parents of elementary school children by food security status (food secure compared to food insecure; fully food secure compared to not fully food secure) in rural, Appalachian Mississippi. A cross-sectional survey of parents (n=1144) recruited from three elementary schools in rural, Appalachian Mississippi utilized validated measures of produce behaviors: 1) fruit, vegetable, and total produce intakes; 2) perceived benefits of barriers …


Un-Earthed, William Austin Mckinney Jan 2019

Un-Earthed, William Austin Mckinney

Electronic Theses and Dissertations

With this exhibition, I strive to create sculptures that reveal beauty and act as a visual reminder of the destruction we have caused by decades of industrial negligence and greed. Using the principles and elements of design I hope to create visually stimulating objects that resembles the beauty found in the hills of Appalachia. A dialogue is fostered that influences future generations by bringing to light the reality of our past transgressions.


Culture Clash: An Applied Research Study On Transforming Student Behavioral Culture In A Failing School, Lindsay Carol Brett Jan 2019

Culture Clash: An Applied Research Study On Transforming Student Behavioral Culture In A Failing School, Lindsay Carol Brett

Electronic Theses and Dissertations

This applied research study seeks to transform student behavior at a failing middle school. The need to improve behavior in order to improve academic achievement became evident after desegregating data and listening to community and staff members voice concerns. Using three intervention strategies, group counseling, teaching classroom management training, and pro-social activities, the program sought to decrease the number of discipline referrals written for a targeted group of students and students school-wide. Surveys, discipline data, and observations were used in the study. The findings reveal behavior can be improved when teacher efficacy is enriched, positive activities are provided, social-emotional learning …


Investigating Nonstandard Southern American English In Written Sources: A Historical Sociolinguistic Approach To The Tennessee Civil War Veterans Questionnaires, Juliana Norton Jan 2019

Investigating Nonstandard Southern American English In Written Sources: A Historical Sociolinguistic Approach To The Tennessee Civil War Veterans Questionnaires, Juliana Norton

Electronic Theses and Dissertations

The purpose of this study was to examine and describe vernacular speech in East Tennessee during the nineteenth-century. This study combines strategies and methodologies from both historical and sociolinguistics to examine dialect in written sources. Specifically, this study utilizes phonological and grammatical data from the Tennessee Civil War Veterans Questionnaires supplemented with data from other written sources to describe East Tennessee vernacular speech. Using both quantitative and qualitative methods, the geographic and social distributions of nonstandard past tense verbs to be and do are analyzed. The findings from this study suggest that nineteenth-century East Tennessee vernacular speech of white men …


Innovation, Ceos, And Ipos, Zhilu Lin Jan 2019

Innovation, Ceos, And Ipos, Zhilu Lin

Electronic Theses and Dissertations

In Part 1, I study if CEOs with innovative ability impose a cost upon their firms. I find that while there is a positive effect of a CEO’s innovative ability on firm innovation, the benefit is only when CEO’s innovative ability is useful for the firm. Further, firms with innovator CEOs spend more on R&D projects but with lower efficiency and hold more cash but with lower cash value compared to firms with non-innovator CEOs. These results suggest that innovator CEOs create an overinvestment problem. In Part 2, I study the effects of talent cycling on IPO long-run performance and …


Interpreting Vegetation And Soil Anomalies In The Guarumen Area Of Northwestern Venezuela Using Remote Sensing Applications, Tyler Edward Ricketts Jan 2019

Interpreting Vegetation And Soil Anomalies In The Guarumen Area Of Northwestern Venezuela Using Remote Sensing Applications, Tyler Edward Ricketts

Electronic Theses and Dissertations

The Guarumen area of Venezuela is a tectonically active region that is approximately 1,640 mi2 across the northern portions of the Barinas Basin and the foothills of the Mérida Andes. It is structurally influenced by the Caribbean plate to the north, the Nazca plate to the west, and the Maracaibo block against the Guyana Shield of the South American Plate. These result in an oblique boundary that gives rise to the fold-and-thrust belt of the Mérida Andes to the west, and the Caribbean Mountain system to the north, in concordance to the right-lateral shearing that is evidenced by the Boconó …


Allodynia And Self-Efficacy In Migraineurs, Ashley N. Polk Jan 2019

Allodynia And Self-Efficacy In Migraineurs, Ashley N. Polk

Electronic Theses and Dissertations

Headache disorders are among the most comdisorders of the nervous system, with migraine alone affecting 14% of women and 6% of men worldwide each year. Headache-related self-efficacy, or one’s confidence in preventing and managing headache, is particularly important for prevention and management of headache disorders and predicts response to behavioral and pharmacological treatments. Allodynia, the perception of non-noxious stimuli as painful due to central sensitization, compounds headache-related disability and compromises efficacy of triptans. Therefore, migraineurs with allodynia may perceive headache treatments as less efficacious and thus have reduced perceived headache-related self-efficacy. However, no literature to date has explored the relationship …


Patient Empowerment In Modern Medicine: A Personal Account Of Endometriosis And Being An Equal Partner In My Healthcare, Jacqueline Schlick Jan 2019

Patient Empowerment In Modern Medicine: A Personal Account Of Endometriosis And Being An Equal Partner In My Healthcare, Jacqueline Schlick

Electronic Theses and Dissertations

This work outlines my personal experience with a diagnosis of stage three endometriosis and partial oophorectomy surgery along with the subsequent medical opinions I received by my primary OB/GYN and other doctors. This thesis seeks to discuss the issues surrounding patient empowerment, and specifically, laws that support patients in their exploration of the truths behind their conditions and the importance of self-education in order to be better equipped in conversations with their physicians. The work includes testimonials from women about their levels of knowledge into their own medical needs upon the time of their prescription to pharmaceutical medications, and how …


In-Situ Gel Of Cyclosporine A – Loaded Solid Lipid Nanoparticles For Topical Occular Delivery For Dry Eye Disease, Samir Shyambabu Senapati Jan 2019

In-Situ Gel Of Cyclosporine A – Loaded Solid Lipid Nanoparticles For Topical Occular Delivery For Dry Eye Disease, Samir Shyambabu Senapati

Electronic Theses and Dissertations

Cyclosporine (CSA) is a highly potent immunosuppressant drug and has been used to treat rheumatoid arthritis, psoriasis, organ rejection post-transplant, and chronic dry eye disease. The objective of this investigation was to increase the CSA residence time on the ocular surface using solid lipid nanoparticles (SLNs) and its in-situ gel formulation (CSA-SLN-IG), for treatment of dry eye disease. CSA loaded SLNs (CSA-SLN) were prepared with the homogenization method, using Precirol ® ATO 5 as a solid lipid and Tween® 80 and Poloxamer 188 as surfactants. Prepared SLNs were optimized based on particle size, zeta potential (ZP), PDI, assay and stability. …


Predictors Of Hospital Quality And Efficiency, Hoda Fotovvat Jan 2019

Predictors Of Hospital Quality And Efficiency, Hoda Fotovvat

Electronic Theses and Dissertations

American hospitals have made serious efforts to implement and expand their health information technology capabilities and to integrate different specialized care or high-tech services in order to maximize the efficiency and quality of care. In providing a variety of HIT-related services, these hospitals expanded their national reputation in line with integrated care goals. As a result, hospitals are encouraged to establish effective communication channels to facilitate patient-physician sharing of the patient care experience, to enhance effective pain management, and to transform patient-centered care modalities to solidify the adequacy of patient care processes. By analyzing national data sets publicly available, this …


Electronic Nicotine Delivery Systems (Ends): Reasons For Use And Associated Factors In Self-Selected Nicotine Concentrations, David D. Allen Iii Jan 2019

Electronic Nicotine Delivery Systems (Ends): Reasons For Use And Associated Factors In Self-Selected Nicotine Concentrations, David D. Allen Iii

Electronic Theses and Dissertations

This study aimed to examine e-cigarette user reasons for use, changes in their nicotine concentrations, and factors associated with changes in their chosen nicotine concentrations.


Behavioral Inhibition And Avoidance: Identifying Vulnerabilities To Avoidant Behavior, Daniel Pineau Jan 2019

Behavioral Inhibition And Avoidance: Identifying Vulnerabilities To Avoidant Behavior, Daniel Pineau

Electronic Theses and Dissertations

Avoidance is characterized as the inability of an individual to interact with a stimulus for the purpose of reducing distress. Avoidance increases the likelihood that distress and symptoms related to anxiety will increase. This may lead to further impairment and anxious pathology across the lifespan. Reinforcement Sensitivity Theory (RST) describes a temperamental vulnerability that influences approach (Behavioral Approach System; BAS) and avoidance (Behavioral Inhibition System; BIS) behaviors. The purpose of the study was to identify, using observed behavioral approach tasks, whether or not BIS/BAS influenced avoidant behavior above and beyond other avoidance vulnerabilities (anxiety sensitivity and emotion dysregulation). Participants (N=297) …


The Effects Of Technology Based Self-Monitoring Across General Education Settings For Students With Behavior Disorders, Lane Maxcy Jan 2019

The Effects Of Technology Based Self-Monitoring Across General Education Settings For Students With Behavior Disorders, Lane Maxcy

Electronic Theses and Dissertations

This dissertation consists of three articles investigating the effects of technology-based self-monitoring to decrease off-task behaviors and increase academic engagement in students who have behavior disorders. Previous literature has examined the effects of technology-based self-monitoring in special education and alternative placements. Unfortunately, there is a lack of investigation with technology-based self-monitoring in general education settings. Together these three articles will clearly determine the effects of technology-based self-monitoring in general education settings specifically for students with behavior disorders.


Flex, Julian Randall Jan 2019

Flex, Julian Randall

Electronic Theses and Dissertations

Within this project I have compiled a book length collection of poems entitled “FLEX” which explore questions of violence, inheritance and pastoral poetics. Taking place across the landscapes of Mississippi, The Dominican Republic, and contemporary Black masculinity FLEX serves to ask questions of what violences contributed to the speaker’s birth and what possibilities exist on the other side of such historical pain.


Variations In The Dragonfly Microbiome Through Life Stages And Its Ability To Harbor Antibiotic Resistant Bacteria, Sarah Russell Jan 2019

Variations In The Dragonfly Microbiome Through Life Stages And Its Ability To Harbor Antibiotic Resistant Bacteria, Sarah Russell

Electronic Theses and Dissertations

Juvenile dragonflies (nymphs) may possess the ability to pass their microbiome to the adult life stage through metamorphosis. If this is so, the environment in which the nymph develops may have an effect on the adult microbiome. In this study, the gut microbiomes of 13 species of dragonfly were compared across life stages and when collected from environments at different levels of urbanization. The gut of each dragonfly was removed, DNA extracted, and a portion of the bacterial 16S rRNA gene amplified and sequenced. Gut suspensions were also plated on antibiotic amended plates to determine the potential for dragonflies to …