Digital Commons Network^™

Relationships Between Watershed Factors And Community Size Spectra Of The Fish And Macroinvertebrate Communities Of Mid-Appalachian Streams, Jarrett Hunter Landreth

Graduate Theses, Dissertations, and Problem Reports (ETD)

Freshwater lotic communities are complex, dynamic, and quick to respond to changes to their environment. However, some of the specific mechanisms driving those changes are yet to be fully understood. Here, I will use the community size spectrum (CSS) approach to assess how the CSS slope, elevation, and food chain length of the fish and macroinvertebrate assemblages as well as the combined CSS of 15 mid-sized (2nd-4th order) streams in north-central West Virginia respond across gradients of watershed factors (drainage area, mean drainage slope, mean drainage elevation, drainage % forest, and stream specific conductance). Field sampling was carried out in …

Empowering Elderpreneurs Scommerce For Genx Consignment Store Owners In West Virginia, Joyita Sarkar

Graduate Theses, Dissertations, and Problem Reports (ETD)

In an ever-evolving digital landscape, this research explores Generation X (GenX) consignment store owners in West Virginia and the transformative power of Social commerce (sCommerce). Despite the ubiquity of Social media platforms, little attention has been given to the impact of sCommerce on the consignment store industry. Drawing from the Technology Acceptance Model (TAM) and the Diffusion of Innovation Theory (DIT), this study examines the factors influencing sCommerce adoption decisions for GenX consignment store owners.

Through qualitative research, this study uncovers untold stories within this entrepreneurial landscape. Purposeful sampling of 11 women and 20-60 minutes of in-depth interviews reveal the …

Development Of Inconel 718f And Inconel 718e Powders For Parts Manufacturing Utilizing Binder Jet Three-Dimensional Printing And Compressed Pellet Methods, Duncan Eric Manor Ii

Graduate Theses, Dissertations, and Problem Reports (ETD)

Alloy Inconel 718 is a Ni based superalloy used for high temperature applications including turbine blades, turbocharger rotors and nuclear reactors. Inconel 718 is a popular commercial atomized powder that has limitations in performance for use in additive manufacturing applications due to poor part quality and efficiency of current fabrication methods. Developing new compositions and additive manufacturing (AM) methodologies of IN718 is critical to improve the quality and the efficiency of IN718 parts manufacturing. Developing new additive manufacturing methodology that produces higher quality parts made of IN718 as compared to current methods has the potential to greatly impact industry, academia, …

Investigation Of Oxidation And Corrosion Resistance Of Ni-Based Alloys And Stainless Steels Under Co2 Environments At Elevated Temperatures, Spencer Roy Fultineer

Graduate Theses, Dissertations, and Problem Reports (ETD)

High mechanical strength integrity, high robustness towards oxidation, and high resistance to carburization under CO2 environments at elevated temperatures are usually required for metallic systems that are employed for power generation. INCONEL 625 is a nickel-based superalloy that started development in the 1950s. This material was designed with the distinct purpose of use in high-temperature and high-pressure systems. While various materials possess the physical properties to handle these conditions, the creation of IN625 addresses the need for a material to withstand the highly corrosive properties of these kinds of environments. In order to evaluate the oxidation and corrosion resistance of …

Skirting The Law: Sensationalism And Spectacle Of British Murderesses From The 1830s To The 1860s, Sarah Elizabeth Offutt

Graduate Theses, Dissertations, and Problem Reports (ETD)

“Skirting the Law: Sensationalism and Spectacle of British Murderesses from the 1830s to the 1860s” concentrates on women who committed the crime of murder during a time where print culture rose in popularity, gendered spheres of influence dictated lives, and class consciousness governed society. Due to their rarity and uniqueness, murderesses became a fascination among the public as they defined societal expectations. While some women inspired sympathy for their plight that led to their actions, others were viewed as wicked and abominations of nature. When observing how infrequently women were convicted in comparison to men, the thesis argues that their …

Interpretation Of The Tandem Mass Spectrum Of The Novel Psychoactive Substance 5f-App-Pinaca, Px-2, Christopher S. Poulos

Graduate Theses, Dissertations, and Problem Reports (ETD)

Designer drugs and novel psychoactive substances (NPSs) are continuously entering the black market and causing serious health problems among users. NPSs present an especially difficult challenge to forensic chemists and toxicologists because they are not well characterized and often involve families of structurally related analogs. In crime laboratories, mass spectrometry is commonly used as a part of an analytical scheme to characterize and identify unknown analytes. Towards this end, tandem mass spectra of questioned analytes are often compared to reference spectra of standards that are either collected contemporaneously with the analyte or collected previously and stored in a database. However, …

A Case Study Analysis Of The Experiences And Perceived Learning Outcomes Of Former Non-Music Majors In Applied Horn Lessons, Jordan Bennett

Graduate Theses, Dissertations, and Problem Reports (ETD)

Non-major music students are an integral part of university music departments, as they both bolster the department’s enrollment numbers and bring diverse perspectives to the ensembles, lessons, and classes in which they participate. Although most non-majors focus their time on ensembles, a few choose to include lessons as part of their experience. Whether motivated by external factors like scholarship money or internal factors like a desire to improve on an instrument, these non-majors are a unique part of any applied studio. However, the phenomenon of non-majors in applied lessons is understudied. Literature tends to focus on non-major enrollment in ensembles …

Fish Community Responses To Environmental And Anthropogenic Conditions In West Virginia, Katherine A. Adase

Graduate Theses, Dissertations, and Problem Reports (ETD)

While Appalachia is among the oldest region in the world, Central West Virginia watersheds have been impacted by anthropogenic stressors, including extractive mining and timber harvest industries, as well as urban development and agriculture, damns, fracking, mining, and land cover use. This study aims to understand how natural environmental and human altered gradients impact affect diversity of fish communities in streams and rivers throughout Central Appalachia. The first chapter aims to provide insights into the impact of the 2016 low head dam removals on taxonomic and functional fish communities in the West Fork River, West Virginia and the potential benefits …

Meiotic Recombination In Zea Mays And Its Contribution To Genetic Diversity, Jasmine Elizabeth Freeman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Meiotic recombination plays a vital role in shaping genome evolution by introducing genetic diversity necessary for natural selection. Recombination rates exhibit extensive variation within and between species, occurring in specific regions known as hotspots and coldspots along individual chromosomes. Maize, with its well-characterized genome, provides an excellent model for studying the nonrandom pattern of meiotic recombination. While retrotransposon activity contributes to significant intergenic variation in maize inbred lines, the genic space remains conserved in terms of gene order and sequence. To investigate recombination activity in the Bz1/Sh1 region, the maize haplotypes W22 and B73, which share genetic backgrounds but differ …

Combustion Characteristics Of Methane, Ethane, Propane, And Butane Blends Under Conditions Relevant Of A Dual-Fuel Diesel And Natural Gas Engine, Christopher Joseph Ulishney

Graduate Theses, Dissertations, and Problem Reports (ETD)

As natural gas production infrastructure is already in place in most of the world and will continue expanding for the foreseeable future, natural gas is an alternative to traditional liquid petroleum fuels in heavy-duty engines. Dedicated natural gas or dual-fuel diesel-natural gas heavy-duty engines are alternatives to diesel-only power generation equipment. One challenge is the large variation in the natural gas composition available for such applications, which is known to significantly affect engine’s combustion characteristics and the emissions composition. As the literature on dual-fuel combustion under low load engine operating conditions that use more realistic natural gas mixtures (i.e., mixtures …

Us Buyers’ Behavior Towards Social Sustainable Certificates, Mehnaz Fatima Monamy

Graduate Theses, Dissertations, and Problem Reports (ETD)

Growing awareness of the fashion industry's environmental footprint in terms of water and chemical use, carbon emissions, textile waste, energy usage, and water pollution has focused international attention on sustainability issues in apparel industries. To showcase their commitment to sustainability, many fashion companies turn to certifications and accreditations from third-party organizations. These certifications and accreditations not only help improve a company's performance and marketability but also give them an advantage over their competitors. US textile buyers are also becoming more selective in their purchasing decisions, looking for high-quality products that are produced in a sustainable and socially responsible manner. This …

Vaping With Nicotine During Pregnancy Affects Aortic Structure And Function In Rat Offspring, Sydney Alexis Nassabeh

Graduate Theses, Dissertations, and Problem Reports (ETD)

Electronic cigarette (E-cig) use during pregnancy has grown in popularity due to the marketing of these devices as safer alternatives to traditional cigarettes. However, nicotine is a constituent in cigarettes that is cause for concern and is also present in a majority of E-cig devices. Little has been reported regarding the implications of E-cig use with nicotine during pregnancy on offspring health outcomes. This study tested the hypothesis that in-utero exposure to nicotine-containing E-cig aerosol would result in a wattage-dependent increase in vascular endothelial dysfunction and arterial stiffening that would persist throughout the lifespan of the offspring. Pregnant Sprague-Dawley rats …

Use Of Carbonation For Treatment Of Coal Mine Drainage To Increase Limestone Dissolution And Generate Alkalinity, Dietrich Henry Kuhlmann Iv

Graduate Theses, Dissertations, and Problem Reports (ETD)

Abstract

Use of Carbonation for Treatment of Coal Mine Drainage to Increase Limestone Dissolution and Generate Alkalinity

Dietrich Kuhlmann IV

Anoxic limestone drains (ALDs) are a common component used within passive treatment systems for coal mine drainage (CMD). Contact between limestone aggregate and CMD results in limestone dissolution, producing carbonate alkalinity. Though ALDs are one of the least expensive CMD treatment technologies, alkalinity generation is limited by limestone solubility. This necessitates a long retention time (>12 hours) and sometimes results in net acidic effluent which requires additional alkalinity generation steps downstream. One way to increase calcite dissolution and alkalinity …

An Analysis Of Urban Land Use Land Cover (Lulc) Changes In Lilongwe City, Central Malawi (2002–2022), Zola Manyungwa

Graduate Theses, Dissertations, and Problem Reports (ETD)

Lilongwe, Malawi’s capital city, has grown nearly tenfold in the last 40 years with a 4-5% annual population growth rate, and the city’s population is projected to double over the next decade. Rural to urban migration and natural increase are the driving factors of the city’s urban expansion. Characterised by the urbanisation of poverty, Lilongwe is experiencing uncontrolled and unplanned urban expansion that has led to the growth of informal settlements. Urbanisation leads to land use land cover (LULC) changes that negatively impact the quality of life and the environment. Lilongwe faces many challenges, including high levels of poverty, inequality, …

Machine Learning Assisted Framework For Advanced Subsurface Fracture Mapping And Well Interference Quantification, Mohammad Faiq Adenan

Graduate Theses, Dissertations, and Problem Reports (ETD)

The oil and gas industry has historically spent significant amount of capital to acquire large volumes of analog and digital data often left unused due to lack of digital awareness. It has instead relied on individual expertise and numerical modelling for reservoir development, characterization, and simulation, which is extremely time consuming and expensive and inevitably invites significant human bias and error into the equation. One of the major questions that has significant impact in unconventional reservoir development (e.g., completion design, production, and well spacing optimization), CO2 sequestration in geological formations (e.g., well and reservoir integrity), and engineered geothermal systems (e.g., …

A Longitudinal Study Of Factors That Affect User Interactions With Social Media And Email Spam, Wojciech M. Mazurek

Graduate Theses, Dissertations, and Problem Reports (ETD)

Given the rapid growth of social media and the increasing prevalence of spam, it is crucial to understand users’ interactions with unsolicited content to develop effective countermeasures against spam. This thesis focuses on exploring the factors that influence users’ decisions to interact with spam on social media and email. It builds upon prior work, which serves as a foundation for further research and conducting a longitudinal analysis. Our results are based on the analysis of 221 responses collected through an online survey. The survey not only gathered demographic information such as age, gender, and race but also collected data on …

Development Of A Mass Transfer Correction Factor In A Thermodynamic Model To Explain The Weathering Patterns Of Ignitable Liquids On Household Substrates At Elevated Temperatures, Max T. Denn

Graduate Theses, Dissertations, and Problem Reports (ETD)

To determine whether a questioned fire is the result of arson or not, forensic chemists will often attempt to extract and identify any ignitable liquid residues present in the fire debris. Forensic chemists use gas chromatography-mass spectrometry (GC-MS) to identify ignitable liquids based on similarities between chromatograms of fire debris extracts and those of reference ignitable liquids that have been evaporated (weathered) to different extents. Casework samples often appear to be relatively unweathered (e.g., 40-60%) and conventional wisdom is that the apparent lack of weathering is the result of entrapment; a process by which liquid residues are absorbed into the …

Parametric Energy Efficiency Impact Analysis For Industrial Process Heating Furnaces Using Measur, Prakash Singh Bisht

Graduate Theses, Dissertations, and Problem Reports (ETD)

Industrial process heating furnace operations consume considerable energy in the U.S. manufacturing sector, making it crucial to identify energy efficiency strategies due to the growing need to minimize energy usage and emissions. It is paramount that engineers and owners focus their resources on maintaining the parameters with the most significant impact on energy efficiency since it is not always feasible to oversee all the parameters. This study represents a comprehensive parametric analysis using MEASUR (Manufacturing Energy Assessment Software for Utility Reduction) to evaluate the impact of various key factors on energy efficiency for industrial process heating furnaces. The data for …

Outdoor Recreation Benefits In Urban Areas: An Importance-Performance Analysis Of Residents' Perception In Morgantown, West Virginia, Zachary D. Cox

Graduate Theses, Dissertations, and Problem Reports (ETD)

Abstract

Outdoor Recreation Benefits in Urban Areas: An Importance-Performance Analysis of Residents’ Perception in Morgantown, West Virginia

Zachary Cox

Since the COVID-19 pandemic, participation in outdoor recreation has surged in primitive, rural, and even urban settings. Similarly, outdoor recreation studies that focus on residents have continually grown post-COVID-19. Through shared activities and a sense of community, residents have a strong voice in the decisions and improvements of their local environmental spaces. The purpose of this study is to assess the benefits of outdoor recreation among residents in the city of Morgantown, West Virginia. To identify these benefits and perceptions, researchers …

Enabling Cybersecure And Resilient Smart Distribution Grid With Edge Devices, Partha Sarathi Sarker

Graduate Theses, Dissertations, and Problem Reports (ETD)

The smart distribution grid achieves enhanced efficiency and flexibility through the utilization of advanced communication infrastructure, digital devices, and robust computation and control capabilities. Grid-edge devices including distributed energy resources (DERs) like solar photovoltaics (PV), battery storage systems, and intelligent electric loads like electric vehicles and smart appliances, are contributing to the growth of the smart distribution grid. This evolution is transforming the grid into a multifaceted network of interconnected devices and systems, enabling bidirectional data communication and power flows. However, these new layers of data integration and control in the smart grid introduce vulnerabilities to cyberattacks and accidental failures, …

Study Of Capillary Channel Fiber Augmented Geobags For Accelerated Dewatering Of High Moisture Content Fine-Grained Acid Mine Drainage Precipitate, Luke William Daugherty

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this study was to investigate techniques to accelerate filtration and dewatering of Acid Mine Drainage precipitate using geobags augmented with Capillary Chanel Fibers and internal lateral drainage structures. Laboratory and field research investigated increasing the total solids retention of Acid Mine Drainage precipitate in geobag storage systems. Current geobag design and field application of treated AMD precipitate exhibits limited filtration and drainage efficiency due to the high moisture content (2500%) polymer amended AMD flocculated solids. Capillary channel fibers (CCFs) are geosynthetic yarns formed with microgrooves and set into bundled arrangements capable of wicking water, via capillary action, …

Computerized Trajectory Analysis For Firearms Examiners, Baillie E. Poulton

Graduate Theses, Dissertations, and Problem Reports (ETD)

Trajectory determination is a very important part of understanding and reconstructing a shooting scene. Conditions for the scene vary for each crime committed, but the evidence left at the scene required to make a reconstruction remains similar. The job of the examiner is to collect the evidence left at the scene and use that evidence to establish what may have happened during the commission of the crime. There is also important information that an examiner may not be privy to, e.g., the firearm and cartridge used. In this case, the evidence that is present, and other gathered information can …

Localized Delivery Of Gm-Csf In The Regulation Of Breast Tumor Oxygen And Anti-Tumor Immunity Through Macrophages, Nicole E. Mihalik

Graduate Theses, Dissertations, and Problem Reports (ETD)

GM-CSF has been employed as an adjuvant to cancer immunotherapies in solid tumors due to its ability to drive immune stimulatory macrophages and other myeloid cells that promote anti-tumor responses. However, GM-CSF does not always exert immune stimulatory effects on myeloid cells, and sometimes even drives immune suppressive phenotypes. GM-CSF effects on myeloid cells and the tumor microenvironment (TME) appear to vary across dosages and even cancer types. However, an optimal dosing regimen for GM-CSF has yet to be determined to-date, and this is further complicated by the fact that GM-CSF is often administered via oncolytic viruses or tumor vaccines …

Rumen And Urine Amine/Phenol-Metabolome Of Beef Steers With Divergent Residual Feed Intake, Taylor S. Sidney

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cattle production is one of the most important agricultural industries in the United States. Despite its overall production efficiency, the industry is facing considerable adversities to its long-term sustainability due to population growth, decreased land availability, and the increase in global warming. Since feed efficiency imposes an immense influence on the cost of production for animals and is a major cost determinant for profitability, the improvement of feed utilization through the understanding of animal-to-animal variation in feed efficiency is pertinent to increase farm productivity and profitability. Residual feed intake (RFI) is a measure of feed efficiency and is defined as …

The Uncertain Future Of Landscapes Subjected To Mountaintop Removal Mining, Samuel James Bower

Graduate Theses, Dissertations, and Problem Reports (ETD)

Increased erosion following human land disturbance is a global issue for ecosystem health and land management. Mountaintop removal (MTR) mining – a type of surface mining predominately found in the Central Appalachian Coalfields region – is one of the most significant examples of human perturbation to a natural landscape. A post-MTR landscape, when compared to its natural state, has significantly different erosive potential due to the rearrangement of topography from mining and reclamation practices. Removal of vegetation and alterations to soil further influence erosion by raising the effective erodibility of substrate subjected to MTR. We quantify the changes in erosion …

Evaluation Of Emerging Screening Technologies For The On-Site Detection And Identification Of Methamphetamine And Its Precursors In Simulated Clandestine Lab Operations, Alexis Nicole Wilcox

Graduate Theses, Dissertations, and Problem Reports (ETD)

Stimulant drugs comprise one of the top drug categories abused in the United States. Due to its accessibility, low price, and manufacturing simplicity, methamphetamine is frequently placed within the top 10 seized drugs in the country. As of March 2023, methamphetamine is the most seized controlled substance in the United States, with 34,291 kg. In 2022, the United States seized over 79,000 kg of methamphetamine. One reason for the proliferation of methamphetamine is related to the production itself, which does not require large warehouses but can be manufactured in houses using relatively accessible materials and small containers. When a clandestine …

Finite Element Modeling And Analysis Of Breech Face Impressions, James A. Hamilton

Graduate Theses, Dissertations, and Problem Reports (ETD)

Finite element analysis (FEA) is a technique which has not been widely used in Forensic Science in general and firearms examination in particular. The general utility of FEA was assessed by the simulation of scenarios commonly encountered during the investigation of firearm related crimes. As a test, simulations included the perforation of a windshield and sheet metal with a 9 mm projectile, the development of pseudo subclass characteristics during the manufacturing of a breech face, and the impact of a projectile with another projectile in air and with a solid body. Results from the simulations were compared to projectiles and …

Forecasting And Optimizing Sensitivity To Low-Frequency Gravitational Waves, Andrew Ryan Kaiser

Graduate Theses, Dissertations, and Problem Reports (ETD)

Pulsars are among the most exotic objects in our Universe. These rapidly
spinning, high magnetic field neutron stars can be used for a wide range of
scientific studies: from the makeup of their own extremely dense and poorly
understood interior to using their extremely regular signals to detect gravita-
tional waves (GWs). Pulsar timing continues to expand to broader communi-
ties, with larger and more sensitive radio telescopes planned and partnerships
between pulsar timing arrays (PTAs) that span the entire globe. A realm of
new physics with the detection of a background hum of gravitational waves
from black holes merging …

The Influence Of Spirituality On Caregiver Burden And Quality Of Life In Older Adult Informal Caregivers, Stephanie Marie Young

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background: Caregiver burden reduces quality of life (QOL) and is associated with poorer health outcomes. Older adults may be more susceptible to caregiver burden due to advancing age and declining health. Spirituality has been shown to reduce caregiver burden and improve QOL.

Purpose: The purpose of this study was to evaluate the direct or indirect influence of spirituality on caregiver burden and caregiver QOL in older adult caregivers. The specific aims were 1) to determine the prevalence of caregiver burden in a nationally representative sample of older adult informal caregivers of other adults and 2) to investigate the relationships among …

The Influence Of Instrumental Sources Of Variance On Mass Spectral Comparison Algorithms, Isabel Cristina Galvez Valencia

Graduate Theses, Dissertations, and Problem Reports (ETD)

Current search algorithms for the identification of substances based only on their electron ionization mass spectra provide the correct compound as their top result approximately 80% of the time. One contributing factor to the ~20% deviation in the first-hit recognition rate is that traditional algorithms work by comparing the unknown spectrum to an ‘ideal’ or consensus spectrum of each reference compound. The inclusion of replicate reference spectra in a database has been shown to improve the probability of ranking the correct identity in the number one position, but the variance in ion abundances caused by different conditions or different instruments …