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Full-Text Articles in Entire DC Network
Frequency Of Illicit Use Of Prescription Stimulants Is Associated With Perceived Adhd Symptoms, Justin Mendonca
Frequency Of Illicit Use Of Prescription Stimulants Is Associated With Perceived Adhd Symptoms, Justin Mendonca
Theses and Dissertations
The frequency of illicit use of prescription stimulants (IUPS) was examined in relation to known risk factors. A hierarchical linear regression (N = 903) was used to evaluate self-reported past-year IUPS and demographic variables. Gender (p < .05), race (p < .05), and GPA (p < .01) were significantly associated with the frequency of past-year illicit use. However, Greek organization membership status, perceived ADHD symptoms and access to prescription stimulant medication were not significant individual correlates of past-year IUPS. Additional analyses were conducted on the user subgroup (n = 101) to determine whether these relationships were similar compared to the general sample. Among users, ASRS Inattention and Hyperactivity-Impulsivity Subscale scores were significantly associated with the frequency of past-year IUPS (p < .05), even after accounting for gender, race, and GPA. Interpretations of these findings and implications for future research are discussed.
Perceptions Of Career And Technical Education Administrators On Stem And Employability Skills Integration Into School Based Agricultural Education, John William Norris
Perceptions Of Career And Technical Education Administrators On Stem And Employability Skills Integration Into School Based Agricultural Education, John William Norris
Theses and Dissertations
The purpose of this study was to assess the perceptions of CTE administrators in Alabama and Georgia on how agricultural education teachers were integrating STEM and employability skills. The population of this study consisted of CTE administrators in Alabama (N = 137) and Georgia (N = 178) with 315 surveys being distributed and 129, or 41%, completing the survey. This descriptive study utilized a static group comparison pre-experimental research design. Means were used to determine how strongly the respondents value employability skills and STEM skills. Standard deviations helped understand how responses varied. Frequencies and percentages were used to determine the …
Investigating Ecological Links Between Floodplain Forests And Aquatic Communities, Conner Owens
Investigating Ecological Links Between Floodplain Forests And Aquatic Communities, Conner Owens
Theses and Dissertations
While there is a clear link between riparian forests and freshwater organisms, floodplain forests are seldom investigated due to difficulties in sampling structurally complex and periodically inundated habitat. This lack of research has led to large knowledge gaps that hinder our understanding of the conservation value of these unique, complex ecosystems for inland fisheries. Therefore, I aimed to determine how bottomland hardwood forests influence fish taxonomic, functional diversity and food web structure. I hypothesized that fish taxonomic and functional diversity are driven by forest complexity and the aquatic food web structure is driven by terrestrial carbon sources, specifically forest vegetation. …
Development Of Data Processing Tool For Precision Agriculture And Delivery System To End User, Rohit Pathak
Development Of Data Processing Tool For Precision Agriculture And Delivery System To End User, Rohit Pathak
Theses and Dissertations
In recent years, dramatic evolution of precision agriculture technology has been driven by technologies such as sensors and controllers, telematics, and UAV. An intriguing area in the field of precision agriculture and UAV is big volume of data and its analysis that have not been dealt with in depth. The main objective of this project is proposed to develop a digital data processing tool and deliver them in a useful format to the end users. This involves three faceted methodical approach: 1) collection of large amounts of UAV images with regards to combinations of in-field sensors and UAV imagery 2) …
The Genetics And Molecular Mechanisms Of Tolerance To 2,4-Dichlorophenoxyacetic Acid (2,4-D) In Upland Cotton (Gossypium Hirsutum L.), Loida Moreno Perez
The Genetics And Molecular Mechanisms Of Tolerance To 2,4-Dichlorophenoxyacetic Acid (2,4-D) In Upland Cotton (Gossypium Hirsutum L.), Loida Moreno Perez
Theses and Dissertations
Upland cotton, Gossypium hirsutum L., is a natural source of fiber and a major row crop in the US with an estimated $7 billion raw product value in 2019. However, it is extremely sensitive to the broadleaf herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). With the evolution of herbicide-resistant weeds compounded by off-target spray damage on conventional cotton varieties outside the transgenic Enlist technology (Dow Agrosciences) of herbicide-tolerant cotton varieties (Dow Agrosciences), there is a need to identify and develop novel sources of herbicide tolerance gene for upland cotton genetic improvement. Cotton chromosome substitution (CS) lines carry introgressions from other cultivated and wild …
Low-Cost Adsorbents For Water Purification, Hasara Dilum Samaraweera
Low-Cost Adsorbents For Water Purification, Hasara Dilum Samaraweera
Theses and Dissertations
Heavy metals, oxyanions (NO3-, PO4-), pharmaceuticals, and dyes in aquatic environments are inevitable economic and health concerns. Ingestion of these contaminants, even in trace amounts, causes long and short-term serious threats to human health. Conventional pollutant mitigation strategies can be costly or ineffective. Due to high efficiency, simplicity, low price, adsorbent reuse, and pollutant (e.g., phosphates) recovery, adsorption has been widely used for wastewater purification. Many efficient, environmentally compatible, and cost-effective sorbents have been successfully applied in environmental remediation. Chapter I is about characterization of graphene-coated pinewood biochar hybrids and evaluation of their copper removal performances. Here, we synthesized three …
Metacognitive Self-Regulated Learning Processes In Computer And Print Reading Assignments Among Elementary Students In Grades 2-5, Katerina Sergi
Metacognitive Self-Regulated Learning Processes In Computer And Print Reading Assignments Among Elementary Students In Grades 2-5, Katerina Sergi
Theses and Dissertations
Self-regulated learning (SRL) and higher-order thinking (metacognitive processes) are important in education because they contribute to effective learning and improved academic performance. These processes may be facilitated by the implementation of computer technology in the classroom. This research project examined the use of computer technology among elementary school students and possible effects on self-regulated learning and metacognitive processes, including the ability to plan, monitor, evaluate one’s own work, and apply specific learning strategies. Two main research questions were investigated: (1) Do elementary school students demonstrate SRL metacognitive processes when they use computers and paper-pencil for reading-relating tasks, and what are …
Bridging Data Gaps For Strategic Conservation Of Gulf Of Mexico Coastal Region Landscapes, Andrew Challen Shamaskin
Bridging Data Gaps For Strategic Conservation Of Gulf Of Mexico Coastal Region Landscapes, Andrew Challen Shamaskin
Theses and Dissertations
The Gulf Coast Region (GCR) of the United States holds immense ecological and cultural value. However, constant environmental changes, from sea-level rise and hurricanes to the Deepwater Horizon oil spill in 2010, threaten many of the values that define the region. Additionally, recent financial settlements from civil and criminal penalties of the Deepwater Horizon oil spill have created an unprecedented opportunity to fund conservation throughout the region. With such a large area of interest (over 700,000 km2) and so many conservation priorities throughout the GCR, there is a great need to strategize which lands are most efficacious for conservation to …
Pharmacokinetics And Pharmacodynamics Of Dexmedetomidine In Horses, Sarah E. Shane
Pharmacokinetics And Pharmacodynamics Of Dexmedetomidine In Horses, Sarah E. Shane
Theses and Dissertations
An ideal dexmedetomidine protocol has yet to be determined for standing sedation in horses. It was hypothesized that an intravenous (IV) bolus followed by continuous rate infusion (CRI) dexmedetomidine would have a quicker increase in plasma concentrations compared to repeated intramuscular (IM) injections. In a cross-over design, eight adult, female horses were randomly placed in two groups: the CRI group (IV bolus dexmedetomidine at 0.005 mg/kg followed by a CRI at 0.01 mg/kg/hr for 15 minutes then 0.005 mg/kg/hr for 60 minutes) and the IM group (dexmedetomidine at 0.01 mg/kg, followed by 0.005 mg/kg in 30-minute intervals for 60 minutes). …
Quality Performance By Deploying Instant Feedback Technologies To Automotive Manufacturing, Jason Shawhan
Quality Performance By Deploying Instant Feedback Technologies To Automotive Manufacturing, Jason Shawhan
Theses and Dissertations
There are many contributing factors that influence the development, deployment, and use of lean manufacturing techniques. This study will focus on an automotive factory production system but will gather data across many areas. The concepts presented in the available research will then be related to lean manufacturing techniques at a union-based automotive factory. Several factors to focus on during this study are the Industry 4.0 movement, production systems, deployment and implementation strategies, lean manufacturing, persuasive technology, and manufacturing culture. These factors play a significant role in developing and implementing core techniques, which would lead to best in class metrics. The …
Assessing Effects Of Habitat Amount Vs. Configuration On Avian Diversity In Managed Pine Landscapes, Craig Sklarczyk
Assessing Effects Of Habitat Amount Vs. Configuration On Avian Diversity In Managed Pine Landscapes, Craig Sklarczyk
Theses and Dissertations
Understanding how habitat amount and configuration affect species richness, occurrence or abundance has been one of the major foci of research in ecology and biogeography, given its central importance for conservation planning and landscape management. We conducted bird point counts within clearcuts and mature pine stands of different sizes and configuration in working pine forest in north-central Mississippi to determine species associations. Early-successional and mature pine focal species showed varying response to the proportion and proximity of vegetation conditions in the landscape. While elements of configuration exhibited a greater influence on predicted avian abundance in this landscape, meaning many species …
Applications Of Battery Energy Storage To Mitigate Disturbances And Uncertainties In Power Systems With High Penetration Of Renewable Energy Resources, Roshan Sharma
Theses and Dissertations
Solar photovoltaic (PV) is the fastest-growing energy resource. The price of energy generation from residential PV has dropped from $0.50 to $0.10 per kWh in the past decade. One challenge with this resource is that the amount of power available depends on the solar irradiance and temperature. Abrupt changes in solar irradiance can cause disturbances to the hosting electricity network and lead to voltage and frequency oscillations. The impact is more severe in a weak grid with high penetration of such resources. Evolving grid interconnection standards are imposing requirements to limit the impacts of these disturbances on the grid. Battery …
Effectiveness Of A Prescription Drug Take-Back Box Mail Intervention Among Rural Mississippians In The Appalachian Region., Je'kylynn Steen
Effectiveness Of A Prescription Drug Take-Back Box Mail Intervention Among Rural Mississippians In The Appalachian Region., Je'kylynn Steen
Theses and Dissertations
The state of Mississippi is undergoing a prescription opioid epidemic that mimics national trends in which prescribing rates are dropping, yet overdoses involving opioids remain high. In response to the state’s crisis, the PReventing Opioid Misuse In the SouthEast (PROMISE) Initiative was created to provide education for preventing the misuse of prescription opioids. A mail survey and post card intervention were distributed in six Appalachian counties in the state to gather the self-reported attitudes, norms, and perceived behavioral control of residents as it related to using a prescription drug take-box. Descriptive and multivariable analyses indicate the intervention did not increase …
Evaluation Of Dicamba Volatility When Applied Under Field And Controlled Environmental Conditions, John M. Taylor
Evaluation Of Dicamba Volatility When Applied Under Field And Controlled Environmental Conditions, John M. Taylor
Theses and Dissertations
Dicamba resistant (DR) cropping technology has increased dicamba use, resulting in observation of dicamba off-target-movement (OTM). Volatility is one form of this movement. Tank mixtures and environmental conditions impact the volatile behavior of dicamba following application. Research was conducted in 2018, 2019, and 2020 to further assess and understand volatility mitigation by understanding tank-mix effects and utility of irrigation on volatility mitigation. Low tunnel and humidome methodology were used to analyze impact of tank mixtures and irrigation on dicamba volatility. Data suggest tank mixing encapsulated chloroacetamide formulations can mitigate volatility when comparing identical active ingredients formulated as emulsifiable concentrates. Tank-mixed …
The Role Of The Endocannabinoid System In Immune Homeostasis With An Emphasis On The Immune Effects Of Carboxylesterase Inhibition By Chlorpyrifos In Murine Lung Tissue, Brittany Nichole Szafran
The Role Of The Endocannabinoid System In Immune Homeostasis With An Emphasis On The Immune Effects Of Carboxylesterase Inhibition By Chlorpyrifos In Murine Lung Tissue, Brittany Nichole Szafran
Theses and Dissertations
The endocannabinoid system is composed of endocannabinoids (eCBs), their cognate receptors, and their biosynthetic and catabolic enzymes. Inhibition of serine hydrolases (catabolic enzymes), such as carboxylesterases (CES), might result in the accumulation of eCBs. eCBs, such as 2-arachidonoylglycerol (2-AG), have been shown to increase or reduce inflammation via engagement with cannabinoid receptors on immune cells. This research focuses on exploring the ability of eCBs and their metabolizing enzymes to regulate inflammation. First, a negative feedback mechanism between inflammation and the eCB system was examined by identifying serine hydrolases inhibited by lipopolysaccharide (LPS) stimulation in mice. Ces2g activity was inhibited and …
An Nlp Leveraged Approach To Formulate Environment Assertions For Requirements-Based Testing, Austin R. Thompson
An Nlp Leveraged Approach To Formulate Environment Assertions For Requirements-Based Testing, Austin R. Thompson
Theses and Dissertations
In order to mitigate the ever-increasing trend in software failures with far reaching consequences, research has suggested close coordination of requirements engineering (RE) and testing. The literature also advocates the notion of requirements-based testing (RBT) focusing on checking both the quality attributes and implementation of requirements. As requirements reside in the environment comprised of certain problem domain phenomena, the environment assertions connecting some of these phenomena in the indicative mood play a critical part in determining the correctness of a software solution. Although several investigations emphasize the role of environment assertions in testing and QA activities, including RBT, current literature …
Improving The Cost-Effectiveness Of Water Wave Measurements And Understanding Of Its Impact On Natural And Restored Marsh Communities, Nigel Temple
Theses and Dissertations
Coastal restoration has become a necessary and ubiquitous practice to enhance and conserve the many ecosystem services lost by marsh degradation. Wave climate is one of the most critical factors to consider for restoration projects. However, knowledge of the ways that waves affect marsh plants and the ecosystem services they provide is limited. The purpose of my dissertation was to improve the effectiveness of coastal marsh restoration by addressing the limitations and gaps associated with plant and ecosystem responses to waves through empirical research with three primary goals: 1) develop and test a low-cost wave gauge, 2) use it to …
The Role Of Sarcoplasmic Reticulum-Mitochondria Interplay In Shaping Pathological Phenotype Development In Cardiac Diseases Marked By Ryanodine Receptor Dysfunction, Brian Tow
Theses and Dissertations
Catecholaminergic polymorphic ventricular tachycardia (CPVT) and pre-diabetic cardiomyopathy (pre-DC) are two cardiac diseases characterized by dysfunction in sarcoplasmic reticulum (SR) Ca2+ release channel RyR2. Despite similar defects in RyR2 leading to aberrant Ca2+ release (ACR), CPVT and pre-DC display divergent pathological phenotypes. Recent findings suggest SR-mitochondria interplay could contribute to pathological development; therefore, the role of SR-mitochondria interplay in shaping intracellular Ca2+ signaling was examined in CPVT and pre-DC by pharmacologically modulating mitochondria Ca2+ handling. Mitochondria can affect cytosolic/global Ca2+ dynamics through at least two mechanisms: buffering cytosolic Ca2+, or generating ROS to modulate RyR2 functionality via posttranslational modifications. Our …
An Analysis Of The Glycine Max Sec61 During Its Defense Response To Heterodera Glycines, Hallie Alyssa Troell
An Analysis Of The Glycine Max Sec61 During Its Defense Response To Heterodera Glycines, Hallie Alyssa Troell
Theses and Dissertations
The secretory pathway of G. max performs a prominent role in its defense to H. glycines parasitism, a finding reinforced by the identification of the SNARE-associated gene ALPHA-SNAP-5 being rhg1. Other proteins performing important roles in secretion are Sec61-ALPHA, Sec61-BETA and Sec61-GAMMA which bind to form a trimeric complex that imports proteins into the ER for their eventual secretion. Comparative analyses to the Saccharomyces cerevisiae Sec61ALPHA, Sec61BETA and Sec61GAMMA proteins, respectively, shows G. max has 4 Sec61-ALPHA, 9 Sec61-BETA and4 Sec61-GAMMA proteins. At least one paralog from each gene family is expressed in H. glycines-parasitized root cells in G. max, …
Phenology And Management Of Triploid Flowering Rush (Butomus Umbellatus L.), Lee Gray Turnage Jr.
Phenology And Management Of Triploid Flowering Rush (Butomus Umbellatus L.), Lee Gray Turnage Jr.
Theses and Dissertations
Flowering rush (Butomus umbellatus L.) is a perennial wetland/aquatic plant that is native to Eurasia but has invaded North America and spread across Southern Canada and the Northern U.S. where it thrives along wetlands, shallow shorelines, and in submersed habitats of lakes, ponds, streams, rivers, and reservoirs. Little is known about the life cycle of flowering rush in its invaded range as only one study has investigated flowering rush phenology in Minnesota, USA. As flowering rush continues to expand its range southward in the U.S. it is imperative that resource managers 1) better understand the plants life cycle, 2) identify …
Sperm Functional Genome And Epigenome Regulating Bull Fertility And Sperm Freezability, Muhammet Rasit Ugur
Sperm Functional Genome And Epigenome Regulating Bull Fertility And Sperm Freezability, Muhammet Rasit Ugur
Theses and Dissertations
Artificial insemination (AI) using cryopreserved sperm has an important positive impact on cattle production. Fertility is the most critical trait controlling livestock production; however, molecular, cellular, and physiological determinants of bull fertility and sperm freezability are not well understood. Better understanding of molecular, cellular, and physiological underpinnings of bull fertility may increase the success rate of AI. The objective of this study was to test the hypothesis that expression dynamics of sperm nuclear proteins, post-translational modifications (PTM) of sperm Histone 4 (H4), and seminal plasma metabolome are associated with bull fertility and sperm freezability (P = 0.043). Flow cytometry experiments …
Influence Of Boat Activity On Wave Climate In Back Bay Of Biloxi, Ms, Matthew Virden
Influence Of Boat Activity On Wave Climate In Back Bay Of Biloxi, Ms, Matthew Virden
Theses and Dissertations
Wave energy is a major driver for many coastal processes and influences wetland vegetation and shoreline stability. Coastal conservation and restoration projects often include wave climate estimations in the decision-making process for project design. The current method primarily used to estimate a project area's wave climate is the use of wind-wave models. These models use wind speed, wind direction, bathymetry, and fetch to estimate site-specific wave activity. However, these models neglect boat wake which is an important contributor to wave energy in fetch-limited environments. This study used site-specific wave measurements to compare wind-protected and open sites in Back Bay, Mississippi. …
An Empirical Study Of Virtual Reality Menu Interaction And Design, Emily Salmon Wall
An Empirical Study Of Virtual Reality Menu Interaction And Design, Emily Salmon Wall
Theses and Dissertations
This study focused on three different menu designs each with their own unique interactions and organizational structures to determine which design features would perform the best. Fifty-four participants completed 27 tasks using each of the three designs. The menus were analyzed based on task performance, accuracy, usability, intuitiveness, and user preference. Also, an analysis was conducted between two different menu organization styles: top-down menu organization (Method-TD) and bottom-up organization (Method-BU). There was no evidence that demographic factors had any effect on the overall results. By and large, the Stacked menu design received very positive results and feedback from all the …
Trio Program: How Community College Trio Participation Can Enhance Academic Success For University Transfer Students, Micah Samuel White
Trio Program: How Community College Trio Participation Can Enhance Academic Success For University Transfer Students, Micah Samuel White
Theses and Dissertations
The purpose of the current study was to determine if participation in a TRIO program at the community college would lead to academic success for transfer students at the 4-year university. Specifically, the researcher collected data for students who participated in a TRIO program at a community college from 2010-2020 to see if they had higher rates of graduation, higher rates of enrollment and completion, and higher GPAs as compared to similar students who were not involved in TRIO at a community college. The independent variables were TRIO participation, gender, first-generation status, Pell status, transfer GPA, and transfer credit hours …
Evaluating Effects Of Contemporary Preemergence Herbicides On Plugged St. Augustinegrass Grow-In Using Multispectral And Traditional Evaluation Methods., Amy L. Wilber
Theses and Dissertations
St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze] is a widely used lawn grass in the southeastern United States. St. Augustinegrass is typically vegetatively established from plugs or sod. Establishment of St. Augustinegrass sod can be slowed due to weed competition. Weed-infested sod may not be harvestable and is less desirable by end users. Preemergence herbicides are used to prevent weed infestation; however, preemergence herbicides often negatively affect sod grow-in. Current research evaluated the effects of contemporary preemergence herbicides on St. Augustinegrass grow-in from plugs. Grow-in was evaluated using visual estimates of percentage St. Augustinegrass cover, as well as Normalized Difference Vegetation …
Evaluation Of Narrow Corn (Zea Mays L.) Production And Management In Mississippi And Management Of Glufosinate Herbicide Applications On Palmer Amaranth (Amaranthus Palmeri) Control In Cotton (Gossypium Hirsutum), John Joseph Williams
Theses and Dissertations
Narrow row corn production has gained interest in the Mid-South region over the last several years. This narrow row spacing interest has been inspired by increase of soybean grain yield from narrow rows. Therefore, production practices were evaluated for proper management of narrow row corn production. Additionally, the management of glyphosate- and potentially auxin-resistant weeds place pressure on other POST chemistries. Therefore, optimizing glufosinate applications are essential for control of Palmer amaranth. The objectives of this research were four-fold: 1) evaluate the phenotypic and grain yield responses of narrow row corn production under irrigated conditions, 2) test corn hybrids for …
Retention Of The Female, Hispanic, Adult Education Esl Learner In Community College Adult Education Classes, Kimberly Lott Wilson
Retention Of The Female, Hispanic, Adult Education Esl Learner In Community College Adult Education Classes, Kimberly Lott Wilson
Theses and Dissertations
The purpose of this study was to provide qualitative data on challenges faced by female, Hispanic, adult students attending ESL classes within community college programs; data on challenges they face achieving long-term educational goals; and ways the community college adult education programs can help students be more successful. Meeting needs of female, Hispanic, adult, ESL students is challenging, and many are nontraditional learners who have life factors that compete for available time and educational resources. Often, adult, female, Hispanic students experience challenges that cause barriers to success. Because each student is unique, exploring challenges in the areas of gender, age, …
The Role Of Microbes And Organic Matter In The Genesis Of Complex Carbonate Facies And Lithologies Referred To As Leopard Rock, Sacramento Mountains, New Mexico, Keith Louris Tischler
The Role Of Microbes And Organic Matter In The Genesis Of Complex Carbonate Facies And Lithologies Referred To As Leopard Rock, Sacramento Mountains, New Mexico, Keith Louris Tischler
Theses and Dissertations
The colloquially named leopard rock of the Holder and Laborcita formations (Late Pennsylvanian-Early Permian) is an algal/foraminiferal boundstone that occurs within a cyclic, interfingered, carbonate siliciclastic system in the Sacramento Mountains of southeastern New Mexico) and often accompanies phylloid algal mounds. This project is the first to fully characterize and evaluate the evidence that leopard rock is microbial in origin and assess the potential influence of methane seeps and deltaic organics on its genesis. Characterization of the algal-foraminiferal boundstone revealed a highly variable expression in outcrop based on geolocated photo imagery, hand samples, optical microscopy, and scanning electron microscopy (SEM) …
An Exploratory Study Of Persuasive Messaging In Information Security, Shan Xiao
An Exploratory Study Of Persuasive Messaging In Information Security, Shan Xiao
Theses and Dissertations
The purpose of this study is to explore how to make persuasive messages effective to sufficiently motivate individuals to form good security practice through two aspects - affect valence-based message and message framing effect. The two emotional appeals examined in this study include traditional fear appeals and humor appeals. Fear appeals, arousing people's fear to persuade them to take precautionary actions, are predominant in the literature of information security. By contrast, humorous messages have been found to induce positive affect, reduce negativity, and enhance message acceptance. In addition, messages can be illustrated in a broader context or can be presented …
The Influenza Ribonucleoprotein Complex And Its Impact On Viral Replication And Evolution, Kaitlyn Waters
The Influenza Ribonucleoprotein Complex And Its Impact On Viral Replication And Evolution, Kaitlyn Waters
Theses and Dissertations
The ribonucleoprotein (RNP) complex of influenza A viruses (IAVs) is responsible for replication and transcription of viral RNA and genome, respectively. Mutations in the RNP genes have been identified to play a role in host adaptations and tissue tropisms of IAVs, and compatibility among these genes has been implicated as an important factor for facilitating reassortment of IAVs. Furthermore, mutations and reassortment can drastically impact the polymerase activities of the RNP complex in vitro. However, the simultaneous role both of these mechanisms play in enhancing or diminishing polymerase activities of divergent IAVs remains opaque, and therefore, a greater understanding of …