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Articles 1 - 30 of 1741
Full-Text Articles in Life Sciences
Investigating Culicoides Diversity, Distribution, And Behavior In Arkansas, Cassandra Steele
Investigating Culicoides Diversity, Distribution, And Behavior In Arkansas, Cassandra Steele
Graduate Theses and Dissertations
Culicoides biting midges (Diptera: Ceratopogonidae) are globally important vectors of pathogens affecting livestock and wildlife. In the United States (US), transmission of bluetongue virus (BTV), epizootic hemorrhagic disease virus (EHDV), and vesicular stomatitis virus (VSV) results in economic losses and periodic mortality events of wild and domestic ruminants. Culicoides sonorensis is the confirmed vector of BTV and EHDV in the western regions of the US, however this species is uncommon throughout much of the eastern and southeastern US, where hemorrhagic diseases remain endemic. There are likely other putative vector species responsible for pathogen transmission. This research investigated Culicoides diversity, distribution, …
The Gravity Of The Ukraine War: Measuring Conflict Impacts On European Grain Trade, Stefan Bonchis
The Gravity Of The Ukraine War: Measuring Conflict Impacts On European Grain Trade, Stefan Bonchis
Graduate Theses and Dissertations
This thesis investigates the heterogeneous structural disruptions caused by the war in Ukraine on the European Union’s agricultural trade architecture, focusing on three critical commodities: wheat, maize, and sunflower seeds. Employing a structural gravity model framework across all 27 EU Member States, the study evaluates two conflict episodes, the 2014 Crimea annexation and the 2022 full-scale invasion, to identify the net beneficiaries and heavily impacted nations within the EU agricultural trade network. The empirical strategy utilizes a dual-test design to capture the full scope of the disruption. Test A (Ukraine towards the EU trade) reveals a distinct geographic logic in …
Corn Yield And Tissue-Potassium Response To Potassium Fertilization, Wyatt A. Rongey
Corn Yield And Tissue-Potassium Response To Potassium Fertilization, Wyatt A. Rongey
Graduate Theses and Dissertations
Potassium (K) deficiency is an increasingly important yield-limiting factor for irrigated corn (Zea mays L.) in Arkansas, where below optimum soil-test K (STK) acreage is increasing and visible K deficiencies or hidden K hunger threaten yield and profitability. Improving K management for modern, high-yielding hybrids require refining soil-test-based fertilizer recommendations and defining growth-stage-specific tissue-K sufficiency ranges that diagnose deficiency before irrecoverable yield loss occurs. This research aimed to i) quantify corn grain yield and yield component responses to K fertilization across a wide range of STK levels; ii) determine the frequency and magnitude of agronomically and economically meaningful yield responses …
Evaluation Of Loading, Release, And Bioavailability Of Resveratrol Encapsulated In Porous Starch, Yu-Yun Wang
Evaluation Of Loading, Release, And Bioavailability Of Resveratrol Encapsulated In Porous Starch, Yu-Yun Wang
Graduate Theses and Dissertations
Resveratrol (Res) is a polyphenolic compound found in grapes, red wine, and berries, with health benefits such as antioxidant, anti-inflammatory, and cardioprotective properties. The poor stability and bioaccessibility of Res after consumption by humans require the development of delivery systems. Among many delivery systems, porous starch (PS) is a safe, cost-effective, and high in adsorption capacity encapsulation material for drugs and bioactive compounds sensitive to environmental factors like light and heat. Porous rice, corn, and potato starch have different granule sizes, pore volumes, and surface areas. However, the impact of these encapsulation capabilities remains unclear among the three porous starches. …
The Role Of Speculators In The Agricultural Futures Market And Their Impact On Prices, Clement Asamoah
The Role Of Speculators In The Agricultural Futures Market And Their Impact On Prices, Clement Asamoah
Graduate Theses and Dissertations
The study evaluates the impact of speculative activity on agricultural commodity returns, specifically in the corn, soybeans, rice, and oats markets. The study also analyzed the influence commodity returns have on speculative positions. Weekly data from the Commodity Futures Trading Commission were used as a proxy for speculative activity, and futures data were also retrieved from Barchart. Vector Autoregressive models and the Granger Causality tests were estimated to identify the relationships between returns and speculation. The paper found that speculative positions do not Granger-cause returns over the course of a week except for rice Tuesday results, which recorded a statistically …
Nitrogen Use Efficiency Of Rice Expressing Arabidopsis Thaliana Dreb1a Gene, Yanis Anetha Vasquez Valdes
Nitrogen Use Efficiency Of Rice Expressing Arabidopsis Thaliana Dreb1a Gene, Yanis Anetha Vasquez Valdes
Graduate Theses and Dissertations
Rice is a globally consumed crop and feeds more than half of the world’s population. Nitrogen (N) fertilization is required for increasing rice crop production and yield, but producers often overuse N fertilizers, exceeding plant uptake capacity. Around 40% of the applied N is lost through volatilization and denitrification to the environment, causing algal bloom formation, greenhouse gas emissions, and water pollution. Therefore, improving nitrogen use efficiency (NUE) in rice has become a principal objective to achieve sustainable agriculture. NUE is a complex trait in rice that coordinates three processes: nitrogen uptake, transport and assimilation, which together support photosynthesis, biomass …
Evaluation Of Thresholds For Adult Tarnished Plant Bug, Lygus Lineolaris (Beauvois), In Thryvon® Cotton, William Anderson Fletcher
Evaluation Of Thresholds For Adult Tarnished Plant Bug, Lygus Lineolaris (Beauvois), In Thryvon® Cotton, William Anderson Fletcher
Graduate Theses and Dissertations
Tarnished plant bug (TPB) is the most economically damaging insect pest of Mid-South cotton. TPB reduces yield is reduced by damaging squares, terminal growth, and small bolls, resulting in reduced yield. Currently, cotton grown in the Mid-South averages 1-6 insecticide applications per year for control of TPB. The introduction of ThryvOn® cotton technology provides a new management strategy for TPB control. ThryvOn® technology produces the Bacillus thuringiensis (Bt) protein Mpp51Aa2, which has insecticidal activity on TPB. A field study was conducted at five locations in 2024 and seven locations in 2025 across the Mid-South to evaluate different threshold levels for …
Effects Of Soil Contamination On The Efficacy Of Antimicrobial Washes For Contaminated In-Shell Pecans, Erin Ramsay
Effects Of Soil Contamination On The Efficacy Of Antimicrobial Washes For Contaminated In-Shell Pecans, Erin Ramsay
Graduate Theses and Dissertations
A study was done to evaluate the survival of Shiga toxin-producing Escherichia coli (STEC) on directly and soil-inoculated in-shell pecans over a 28-day period, determine STEC reductions after treatment with individual and sequential antimicrobial washes on direct and soil-inoculated in-shell pecans, and determine the cross-contamination potential of the spent pecan washes after a treatment. Pecans were directly and soil-inoculated with an STEC cocktail (O157:H7, O157:NM, O121, and O26). Direct inoculation was achieved by spraying the STEC cocktail on the pecans and homogenizing by hand for 2 min. For the soil-inoculation method, autoclaved pecan tree orchard soil was sprayed with the …
Alternative Methods To Improve Livestock Performance While Grazing Low-Quality Forages., Ivan Raynard Thomas Jr
Alternative Methods To Improve Livestock Performance While Grazing Low-Quality Forages., Ivan Raynard Thomas Jr
Graduate Theses and Dissertations
Stocker cattle producers in the southeastern part of the U.S. heavily depend on traditional forages such as bermudagrass [Cynodon dactylon] pastures during the warm season for grazing. Summer annual forages offer stocker cattle operations a valuable alternative source of forage. These forages have high yield potential and can help extend the grazing season. This is particularly beneficial during the summer months when traditional forage sources may be limited. Warm-season annual grasses may experience a decrease in crude protein concentrations during late summer and early fall. As a result, it may be necessary to find alternative sources of crude protein or …
Evaluation Of A High Protein Low Oligosaccharide Soybean Meal In Poultry Production, Kasey Matusik
Evaluation Of A High Protein Low Oligosaccharide Soybean Meal In Poultry Production, Kasey Matusik
Graduate Theses and Dissertations
The purpose of this study was to evaluate the influence of feeding a high protein, low oligosaccharide soybean meal to optimize poultry nutrition by the effects of feeding the soybean meal to roosters, broiler chickens, and turkeys. Two research objectives were evaluated to determine whether high protein, low oligosaccharide soybean meal would have increased nutritional value. The first objective assessed the metabolizable energy (ME) content of a high protein, low oligosaccharide soybean meal compared to a conventional soybean meal. Using roosters, broiler chickens, and turkey poults, three bioassays were conducted to evaluate the ME of the soybean meal. Results demonstrated …
Organic-Complexed Or Inorganic Trace Mineral Tub Supplementation: Impacts On Productivity And Reproductive Outcomes In Beef Cows And Heifers, Jacy Riddle
Graduate Theses and Dissertations
The objective of these experiments was to investigate the effects of organic-complexed or inorganic trace minerals (copper, cobalt, manganese, and zinc) on cow reproductive performance, suckling calf growth, as well as heifer development and reproductive outcomes utilizing free-choice tub supplementation. In lactating cows, treatments consisted of molasses-based tub supplementation containing either complexed or inorganic trace minerals, with an additional pre-breeding drench administered only to cows receiving complexed minerals. The drench contained complexed or organic copper, cobalt, manganese, and zinc. Supplementation began approximately 6 weeks prior to fixed-timed artificial insemination (FTAI) and continued until bull removal (d 105). In weaned replacement …
Valorization Of Rice Bran For Functional Film Fabrication Using Cold Plasma For Food Packaging And Biomedical Applications, Saydul Md Safwa
Valorization Of Rice Bran For Functional Film Fabrication Using Cold Plasma For Food Packaging And Biomedical Applications, Saydul Md Safwa
Graduate Theses and Dissertations
Abstract Over the past few years, conventional plastic packaging materials have become increasingly concerned with their environmental impact. Therefore, the demand for bioplastics has been increasing significantly over the years. Rice milling, a process that modifies paddy rice into edible rice, generates by-products such as rice bran. Rice bran has cellulose, hemicellulose, lignin, and protein, which makes it a potential material for bioplastic fabrication. However, like most biodegradable films, rice bran films fall short when it comes to practical packaging applications. They often lack the strength, flexibility, moisture resistance, and barrier performance needed to compete with synthetic plastics. Most importantly, …
Seasonality Of Bovine Respiratory Disease Incidence, Nasal Temperatures, And The Nasal Microbiome In Receiving Beef Cattle: Understanding The Risk Of The Bovine Respiratory Disease Complex, Robin Ashley Cheek
Graduate Theses and Dissertations
Bovine respiratory disease (BRD) has persistently been the leading cause of morbidity of beef cattle in the United States. Season has been directly associated with respiratory disease incidence and is likely a proxy for weather conditions, which vary by geographical location. The nose is one of the first points of contact between the outside environment and inside the body. The nasal microbiome and its relationship with BRD have been heavily studied within beef cattle, but there are not yet any studies to determine if the environment within the nasal cavity has a role to play in this mechanism. This dissertation …
Soilless Substrates As A Critical Control Point For Mitigating Food Safety Risks Within Hydroponic Leaf Lettuce Production, Eric Nuertey Tetteh
Soilless Substrates As A Critical Control Point For Mitigating Food Safety Risks Within Hydroponic Leaf Lettuce Production, Eric Nuertey Tetteh
Graduate Theses and Dissertations
The effect of hydroponic soilless substrates and microbial biocontrol agents on the persistence of foodborne pathogens in indoor lettuce production is variable depending on substrate type, pathogen species, and biocontrol formulation. This study addressed key gaps by first characterizing the ability of different substrates to support Salmonella and Listeria monocytogenes survival and then evaluating the ability of pine biochar and Bacillus subtilis to suppress pathogen persistence in selected substrates under controlled conditions. In the first experiment, the persistence of Salmonella and L. monocytogenes was evaluated in four soilless substrates: rockwool (RW), low density foam (LDF), peat moss (PM) and coco …
Characterization Of River Cane Morphology, Density And Biomass In Sun And Shade In Stream Riparian Zones In Northwest Arkansas, Emily Shy-Anne Carter
Characterization Of River Cane Morphology, Density And Biomass In Sun And Shade In Stream Riparian Zones In Northwest Arkansas, Emily Shy-Anne Carter
Graduate Theses and Dissertations
River cane, or Arundinaria gigantea Walter (Muhl.), ecosystems serve as ecological and cultural keystones, offering wildlife habitat, streambank stabilization, and construction/craft material for Native groups who utilize river cane. However, these ecosystems have declined substantially because of overgrazing, land conversion, and fire suppression, resulting in reduced patch size and culm morphology. Historically widespread across floodplains and riparian zones, canebrakes, or monotypic forests of river cane, have been restricted to small fragments. This study evaluated how canopy cover influences light availability, culm morphology, density, and biomass of river cane across eight riparian sites in Northwest Arkansas to inform restoration efforts. Light …
Identifying Muscle Health Deficits Among Older Adults With And Without Cognitive Impairment, Ray Guerreros Urbina
Identifying Muscle Health Deficits Among Older Adults With And Without Cognitive Impairment, Ray Guerreros Urbina
Graduate Theses and Dissertations
Age-related declines in skeletal muscle health (SMH) and cognitive function are major contributors to disability, loss of independence, and reduced quality of life among older adults. Emerging evidence suggests that skeletal muscle and cognitive health may be interconnected through shared physiological mechanisms; however, the relationships between specific aspects of SMH and cognitive performance remain unclear. Therefore, the purpose of this study was to examine the relationships between SMH and cognitive performance among older adults and to determine whether SMH differs between cognitively healthy and cognitively impaired individuals after accounting for age and physical activity. A cross-sectional analysis was conducted using …
Challenges And Opportunities In Dry Aging: Producer Perspectives And Valorization Of Dry- Aged Waste Products, Peyton Scout Arnold
Challenges And Opportunities In Dry Aging: Producer Perspectives And Valorization Of Dry- Aged Waste Products, Peyton Scout Arnold
Graduate Theses and Dissertations
Despite the projected increase in the dry aging market, producers may be hesitant to incorporate dry aging practices. This thesis aims to identify primary concerns faced by producers in implementing a dry aging program. Semi-structured interview surveys were conducted via Qualtrics (N = 100). Results indicated that an “advanced” level of dry aging knowledge correlated with a higher importance in the use/sale of dry aged products (P = 0.02). Cost, demand, and sourcing were the top three concerns of producers practicing dry aging. Those considering implementation were concerned with cost, processing parameters, safety, demand, and sourcing. No significant differences were …
Identification Of Conditionally Essential Genes Required For Salmonella Enterica Serovar Typhimurium Adaptation To The Chicken Cecal Extract Through Ex Vivo Modeling And Transposon Insertion Sequencing, Deborah Bukola Olubanjo
Identification Of Conditionally Essential Genes Required For Salmonella Enterica Serovar Typhimurium Adaptation To The Chicken Cecal Extract Through Ex Vivo Modeling And Transposon Insertion Sequencing, Deborah Bukola Olubanjo
Graduate Theses and Dissertations
Salmonella enterica serovar Typhimurium (S. Typhimurium) remains a major foodborne pathogen associated with chicken, where it can persist in the intestinal tract without overt disease and contribute to zoonotic transmission. The chicken cecum represents a complex ecological niche shaped by microbial competition, host-derived substrates, short-chain fatty acids, oxygen limitation, extracellular components, and diverse metabolic gradients. Although transposon insertion sequencing (Tn-seq) has been widely used to define bacterial fitness determinants, limited work has examined genome-wide adaptation of S. Typhimurium in chicken ceca-derived ex vivo systems that preserve key features of the avian cecal environment. This dissertation investigated conditionally essential genes required …
Evaluation Of Metabolizable Energy And Phosphorus Availability In Conventional And Fractionated Dry-Grind Corn Co-Products For Poultry, Luke Parisi
Graduate Theses and Dissertations
The purpose of this research was to determine the availability of energy and phosphorous (P) in dry-grind corn co-products in chickens was assessed. In the first objective, the determination of energy availability, both a precision-fed rooster assay and an ad libitum fed broiler chicken assay were used in order to elucidate energy availability in corn co-products. There were 8 samples of corn fermented protein (CFP) and 2 samples of conventional distillers dried grains with solubles (CDDGS) evaluated for metabolizable energy (ME). The CFP contained a mean CP and crude fat of 55 and 3.7% (DM basis), respectively, compared with 30 …
Evaluation Of The Weed Control Efficacy And Potential Economic Returns Of An Autonomous Weeder In Vegetable Production Systems, Claire Plassmeyer
Evaluation Of The Weed Control Efficacy And Potential Economic Returns Of An Autonomous Weeder In Vegetable Production Systems, Claire Plassmeyer
Graduate Theses and Dissertations
Vegetable production requires intensive weed management. Conventional producers rely on herbicide applications to manage weeds effectively at low costs; however, growers are under pressure to minimize chemical use due to environmental concerns and increased incidences of herbicide resistance. Non-conventional systems, including organic and sustainably focused small-scale production, rely primarily on cultural practices and physical weed control methods, which are labor-intensive and costly due to limited labor availability and rising wages. These concerns have prompted the development of autonomous weeding devices, such as unmanned ground vehicles (UGVs) equipped with navigation sensors and implements to provide repeated, high-precision weed control. Compact devices …
Exploring Google Trends In Assessing Personal Finance Needs For Cooperative Extension Service Programming, Megan Wells
Exploring Google Trends In Assessing Personal Finance Needs For Cooperative Extension Service Programming, Megan Wells
Graduate Theses and Dissertations
The Cooperative Extension Service (CES) relies on systematic needs assessments to guide program development; yet, traditional approaches often depend heavily on stakeholder input and professional judgment, offering limited insight into consumer level needs. This mixed methods study explored Google Trends as a complementary, consumer driven data source for assessing Family Resource Management (FRM) needs within the Arkansas CES. Grounded in Witkin and Altschuld’s three level needs assessment framework and Uses and Gratifications Theory, the study integrated three data sources representing stakeholders, service providers, and consumers: (1) Family and Consumer Sciences (FCS) advisory committee reports, (2) survey of Family Consumer Science …
Are Sticky Prices Present In Us Ag Land Lease Rates, John Tyler Blazzard
Are Sticky Prices Present In Us Ag Land Lease Rates, John Tyler Blazzard
Graduate Theses and Dissertations
Land is an essential resource in production agriculture. Limited supply and high demand for land have resulted in increasing land values which are a barrier to entry for beginning farmers and ranchers with limited access to capital and credit. One way to overcome the high costs of purchasing land is to lease it. While more affordable than purchasing land, cash rents are also increasing. The objective of this research is to determine whether agricultural cash rents follow farm income symmetrically over time. This is accomplished by implementing Ordinary Least Squares (OLS) regressions with two-way fixed effects which account for rental …
Geospatial Science And The Changing Environment: Applied Methods For Sustainable Agriculture And Landscape Management, Harrison Wakefield Smith
Geospatial Science And The Changing Environment: Applied Methods For Sustainable Agriculture And Landscape Management, Harrison Wakefield Smith
Graduate Theses and Dissertations
Rapid environmental change is disrupting agricultural productivity, ecological function, and the long-term resilience of managed landscapes. At the same time, the rapid growth of geospatial data science has improved our understanding of environmental change and increasingly is being used to improve sustainability in agricultural and environmental management. However, critical gaps remain that limit the applicability of data-driven insights in landscape management. This dissertation investigates the potential of geospatial analytics for sustainable agriculture and landscape management, with a focus on applied methods that operate across spatial and temporal scales. Using field, landscape, regional, and national datasets, it explores the capabilities and …
A Q-Methodology Study Of How Viewers Within The Southeastern Circuit Perceive The Future Of The Western Sports Industry, Molly Mckettrick
A Q-Methodology Study Of How Viewers Within The Southeastern Circuit Perceive The Future Of The Western Sports Industry, Molly Mckettrick
Graduate Theses and Dissertations
Western Sports occupy a unique position within American Culture, reflecting traditions rooted in agricultural communities and livestock practices, while also evolving as contemporary spectator events. Despite the growing visibility of Western Sports through media coverage on various digital platforms, there is limited research on how general audiences perceive the sport, which is the purpose of this study: to examine how viewers perceive the sport. This study examines viewer perspectives regarding the sport across various digital platforms, due to limited research on how general audiences perceive the sport while employing Q-Methodology to identify shared perspectives among spectators. A total of forty …
Conservation Wins And Woes: A Meta-Synthesis Of Ecotourism Impacts On Primates And Local Communities, Madison Lanie Mckinniss
Conservation Wins And Woes: A Meta-Synthesis Of Ecotourism Impacts On Primates And Local Communities, Madison Lanie Mckinniss
Graduate Theses and Dissertations
Biodiversity assessments identify 612 extant species of primate, but ~50% of these species are at risk of extinction. Threats include agricultural and industrial production, urban development, and poaching. As concerns have grown regarding impacts on the environment, researchers have proposed ecotourism as a tool for conserving ecosystems while improving human welfare. Although conservation initiatives are pursued at these ecotourist sites, the presence of humans can cause additional influences on non-human primates (NHP). Primatologists have posed questions regarding implications of ecotourism on NHP, but research remains scarce. This study will investigate the practices executed at ecotourist sites where endemic NHPs reside. …
Sensing Rna’S Conformation With A Solid-State Nanopore Device At Various Ph And Temperature, Haopeng Li
Sensing Rna’S Conformation With A Solid-State Nanopore Device At Various Ph And Temperature, Haopeng Li
Graduate Theses and Dissertations
This study uses solid-state nanopore technology to investigate the stability and dynamics of RNA molecules under thermal stress and pH fluctuations. Two distinct mRNA samples were analyzed: (1) heat shock protein (HSP)-encoding mRNA extracted from Sulfolobus solfataricus P2, a thermophilic archaeon inhabiting extreme environments such as geothermal sulfuric hot springs (pH < 4, temperature range: 65–90°C), and (2) total RNA extracted from White Leghorn chickens, which thrive under standard physiological conditions. ΦX174 virion single-stranded DNA (ssDNA) were included as a comparative reference. Nanopores, fabricated in silicon nitride membranes, were used to electrically characterize the structural properties of individual RNA molecules in solution, close to their native environments. The nanopore membrane separates two chambers containing salt buffer solution, where ionic current is the primary measurement parameter. When a voltage bias is applied across the membrane, ion flow and an ionic current can be measured. Charged RNA molecules driven translocation through the nanopore induces pore resistance changes, resulting in detectable current blockade events. Variations in these events provide insights into RNA secondary structure and conformational dynamics. By systematically altering pH and temperature, this study elucidates the effects of environmental stressors on RNA stability and structural integrity. The findings reveal distinct responses between thermophilic HSP-encoding mRNA and mesophilic RNA, underscoring the adaptive mechanisms of thermophilic RNA under extreme conditions. These results contribute to a better understanding of RNA behavior under stress and establish a foundation for future applications in RNA-based diagnostics and biotechnology development.
Leveraging Historic Collections: Investigating Morphometric Differentiation In Members Of The Arisaema Triphyllum (L.) Schott (Araceae) Species Complex, Morgan Bradley Russell
Leveraging Historic Collections: Investigating Morphometric Differentiation In Members Of The Arisaema Triphyllum (L.) Schott (Araceae) Species Complex, Morgan Bradley Russell
Graduate Theses and Dissertations
The Jack-in-the-pulpit (Arisaema triphyllum (L.) Schott) is an herbaceous perennial herb of North America, and its taxonomic history is full of confusion and rank shifts. Now split into six species, the A. triphyllum species complex consists of morphologically similar taxa that have differing ploidy levels. In Chapter I, I compiled a detailed introduction and history for these taxa, focusing on their taxonomic complexity and morphological ambiguity in herbarium specimens and immature plants. I also presented their ploidy distinctions and how the implications of polyploidy may hold answers to parsing them apart, especially in dried herbarium specimens where defining characteristics are …
Applying Motivational Interviewing-Based Health Coaching Within An Existing Exercise Referral Program: A Cost, Implementation, And Effectiveness Analysis, Zachary Joseph Friedman
Applying Motivational Interviewing-Based Health Coaching Within An Existing Exercise Referral Program: A Cost, Implementation, And Effectiveness Analysis, Zachary Joseph Friedman
Graduate Theses and Dissertations
Higher levels of physical activity (PA) are known to be associated with lower rates of chronic disease and better quality of living. However, population-wide deficits in PA continue to demand strategies for supporting PA-related behavior change. Health coaching represents a promising intervention strategy for behavior change, but its effectiveness in generally healthy, non-clinical populations is not clear. The purpose of this project was to evaluate the feasibility, cost, and effectiveness of integrating student-delivered, motivational interviewing (MI)-based health coaching into an existing university-based exercise referral program (ERP). Additionally, this study aimed to use students as health coaches, and to document training …
Intraday Cotton Futures Price Responses To World Agricultural Supply And Demand Estimates (Wasde) News, Owen Mclane Tyrone
Intraday Cotton Futures Price Responses To World Agricultural Supply And Demand Estimates (Wasde) News, Owen Mclane Tyrone
Graduate Theses and Dissertations
Price discovery in agricultural futures markets is augmented by information about supply and demand, leading markets to react when public reports are released. Effective price discovery in futures markets is vital to allocate physical commodities across time, synthesize information, and provide hedging tools. Price discovery in cotton markets is unique because it is less liquid than many other commodity markets. Therefore, our objective is to measure the initial price response in the cotton futures market to unanticipated ending stocks information in the WASDE report; then determine if markets continue to adjust after the initial price change. To meet our objective, …
Nadh Flim Reveals Cellular Bioenergetics And Mitochondrial Morphology During Drosophila Convergent Extension, Maria Espana Pena
Nadh Flim Reveals Cellular Bioenergetics And Mitochondrial Morphology During Drosophila Convergent Extension, Maria Espana Pena
Graduate Theses and Dissertations
Mitochondria are dynamic organelles that can fragment or fuse to support different bioenergetic demands and cellular processes, although the role of mitochondrial fission and fusion during embryonic development is not well understood. Fluorescence lifetime imaging (FLIM) of the mitochondrial cofactor NADH can be used to visualize mitochondrial networks and infer aspects of cellular bioenergetics in a label-free manner. We used NADH FLIM to test whether germband cells undergo changes in cellular metabolism during Drosophila convergent extension (CE)––a process in which hundreds of epithelial cells undergo coordinated intercalation to elongate the embryo. Contrary to our expectations, we did not observe significant …