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Selectivity Of Infrared Heat Treatment On Inactivation Of Mycotoxigenic Fungi On Stored Grain, Shantae A. Wilson

Graduate Theses and Dissertations

Selective Infrared (IR) heating holds great potential to decontaminate spores of unsafe fungi in corn. The objectives for this study were to investigate the impact of exposing corn to infrared energy at selected peak wavelengths (λ), infrared intensities and treatment durations, followed by tempering for further inactivation of microbes on the grain and explore a method for decontaminating Aspergillus flavus (A. flavus) spores on corn. Freshly harvested corn with initial moisture contents (IMCs) of 16%, 20%, and 24% wet basis (w.b.) were used. The corn samples were treated at different infrared wavelengths (3.2, 4.5, and 5.8 μm) for 20, 40 …

The Effect Of Prescribed Burning On Wood-Decay Fungi In The Forests Of Northwest Arkansas, Nawaf Ibrahim Alshammari

Graduate Theses and Dissertations

Prescribed burning is defined as the process of the planned application of fire to a predetermined area under specific environmental conditions in order to achieve a desired outcome such as land management. This project used both morphological and molecular methods to identify and characterize the wood-decay fungi associated with the forests of northwest Arkansas—Pea Ridge National Military Park, Devil’s Den State Park, and the Buffalo National River—through frequent visits made between February 2018 and February 2019. In addition, in order to assess the effects of prescribed burning, incubation chambers were used to compare the growth of fungi from both unburned …

Visualizing Ischemic Skin Flap Necrosis Through Phasor Analysis Of Autofluorescence Lifetime Images, Hallie Ramser Toomer

Graduate Theses and Dissertations

Necrotic skin flaps are difficult to predict and treat due to the lack of quantitative biomarkers. Label-free multiphoton microscopy is well suited for non-invasively monitoring skin metabolism through NAD(P)H and other intrinsic fluorophores, and offers immediate future directions for assessing necrosis in the clinic. The objective of this study was to assess whether phasor FLIM could be used to evaluate skin flap status and treatment efficacy in ex vivo skin sections. Phasor maps revealed differences in growth factor treatment and region, but changes in skin flap autofluorescence at 755nm excitation and 460nm emission were not just related to NAD(P)H. A …

Investigation Of Microbiota In Health And Disease Of Poultry, Bishnu Adhikari

Graduate Theses and Dissertations

The microbiotas play vital roles in health and diseases of both humans and animals. 16S rRNA genes sequence analysis is one of the most popular and commonly used methods in the analysis of microbiotas associated with hosts. In this dissertation, the microbiotas of chickens (broilers, breeders, and layers) and turkeys were evaluated by 16S rRNA gene sequencing. Characterization of the culturable subpopulations of Lactobacillus in the chicken gut can serve as a valuable resource for probiotic development. In Chapter 2, Lactobacillus subpopulations recovered on MRS from chicken gut were defined comprehensively for the first time using 16S rRNA gene profiling, …

Prediction And Evaluation Of Breast Myopathy, Barbara De Almeida Mallmann

Graduate Theses and Dissertations

Broiler breast myopathies, including woody breast, white striping, and spaghetti breast, negatively impact the industry. Therefore, evaluation, prediction, and frequency of these muscle abnormalities on modern birds are important for decision making. Modern broilers are not highly active and often sit with the breast of the bird resting on the floor. Therefore, the first experiment was to promote bird movement and explore the impact on the breast myopathies. The movement was stimulated by human interaction (walking through pen) and higher light intensity so that birds walked around the pen more often throughout the day. The control group had normal low …

The War On Winter: How Americans Put Down Roots On The Northern Plains, 1854-1949, Daniel J. Fischer

Graduate Theses and Dissertations

My dissertation is a study of how the United States was able to expand onto the Northern Great Plains, consisting of the Dakotas, Nebraska, and the eastern parts of Wyoming and Montana, between 1854 and 1949 despite the threat to property, comfort, and survival posed by the region’s harsh winters, which brought intense cold, large snowdrifts, and blinding blizzards. This dissertation argues that five tools – government programs, rapidly changing technology, imagination, strong local communities, and toughness – allowed native-born Americans and European immigrants to survive and become increasingly secure in the region. But it also argues that severe gaps …

Stable Isotope And Geochemical Characterization Of Nutrient Sources In The Big Creek Watershed Of Northwest Arkansas, Kelly Robin Sokolosky

Graduate Theses and Dissertations

The establishment of a concentrated animal-feeding operation (CAFO) in Newton County, Arkansas near Big Creek, a tributary of the Buffalo National River, has raised concern over potential degradation of water-quality in the watershed. In this study, isotopic tools were combined with standard geochemical approaches to characterize nutrient sources and dynamics in Big Creek. An isotopic and geochemical reference library of potential nutrient sources in the Big Creek watershed was established by direct sampling of representative potential sources, including septic-system effluent, poultry litter, swine and cattle manure, and CAFO waste lagoons. Representative nutrient sources and Big Creek stream samples were analyzed …

Technologies To Increase Animal Performance In Beef Production Systems, Caleb P. Weiss

Graduate Theses and Dissertations

Three monensin levels during a stocker phase (0, 800, 1600 g/ton in a free choice mineral) and two levels during finishing (0 [U] or 37.5 mg/kg diet DM [M]) were used to determine the effects of monensin supplementation during a stocker and subsequent finishing phase on beef calves. Steers (n = 605, BW = 278 ± 27 kg) were fed pearl millet hay with soybean hull and corn gluten feed supplement (0.5% BW daily [AF basis] Block 1) or grazed fall wheat (Block 2), spring wheat (Block 3), bermudagrass (Blocks 4 & 5) or wheat with mixed-grass baleage (Block 6). …

Potential Antimicrobials For Controlling Listeria Monocytogenes In Frankfurters, Aaron Rashad Bodie

Graduate Theses and Dissertations

Listeria monocytogenes is a pathogenic microorganism that causes Listeriosis. Listeriosis is a highly mortal disease with approximately 20% mortality rate. Listeria is psychrophilic, therefore it is able to survive in the refrigerator. This affects foods at cool storage such as fresh produce and RTE meats. To ensure the safety of RTE meat, post processing treatments are used such as vacuum packing, edible films, dip and treatment. One-way RTE can be treated is with the use of antimicrobials. However, in the past chemical substances were used. Currently, consumers want more natural and organic preservatives to combat health problems from toxic components …

Nesting Success Of Dickcissel (Spiza Americana) And Non-Breeding Grassland Bird Use Of Northwest Arkansas’ Remnant And Restored Tallgrass Prairies, Alyssa L. Derubeis

Graduate Theses and Dissertations

Dwindling populations of North American grassland birds are linked to habitat loss. Tallgrass prairie only covers 3% of its pre-settlement-era range. Small-scale restoration projects attempt to increase acreage for prairie avifauna, and while some breeding grassland species are present at these sites, nesting success and non-breeding use are still largely unknown. Both life history aspects are required for effective grassland bird conservation. My first objective was to access nest success of the Dickcissel (Spiza americana) at two remnant and two restored tallgrass prairies in Northwest Arkansas. From May-August 2017 and 2018, I found 114 nests that I monitored to determine …

A Simulation Tool For Evaluating The Environmental Impacts Of Management Scenarios For Modern Broiler Production Systems, Martin Andrew Christie

Graduate Theses and Dissertations

The purpose of this work is to provide a simulation tool that allows broiler production practitioners and researchers to simulate the effects of farm design and management practices on resource consumption and environmental impacts. This tool allows the user to design unique farms and simulates on farm processes required to raise broiler chicks to a marketable age. The use can input data such as farm location, broiler breed, flock size, ration type, barn dimensions, and climate control equipment specifications. The algorithms used to simulate broiler breed specific feed intake, broiler weight gain, and other on farm processes such as heating, …

Characterization Of The Swine Gut Microbiome Dynamics, Culturomics And Probiotics, Xiaofan Wang

Graduate Theses and Dissertations

The gastrointestinal tract is a critical place where the immune system concentrates many of its protective functions. It exerts both physical and biochemical defenses against invading foodborne pathogens and other hazards. In pigs, the gut microbiota community assembled postnatal plays a very important role in the development of multiple physiologic aspects, such as development of the gastrointestinal tract, nutrient exchange, immune defense against foreign pathogens and growth performance. Microbiome-host communication changes with age. Despite recent advances in understanding the swine gut microbiome at different growth stages, a comprehensive longitudinal study of the lifelong dynamics of the swine gut microbiome is …

Westward Empire: George Berkeley’S ‘Verses On The Prospect Of Planting Of Arts’ In American Art And Cultural History, Elizabeth Kiszonas

Graduate Theses and Dissertations

This study investigates the extraordinary half-life of a single line of poetry: “Westward the Course of Empire takes its Way…”. Beginning with their composition in 1726 by the Irish- Anglican bishop George Berkeley, these words colonized an enormous swath of cultural landscape over nearly two centuries. Immortalized in newsprint, broadsides, statesmen’s speeches, reading primers, geographies, the first scholarly history of the United States, as well as in poetry, paintings, lithographs, and photographs, the words evolved from an old-world vision of prophetic empire into a nationalist slogan of manifest destiny. Following the poem as it threads through literary and visual culture, …

Visual Saliency Analysis, Prediction, And Visualization: A Deep Learning Perspective, Ali Majeed Mahdi

Dissertations

In the recent years, a huge success has been accomplished in prediction of human eye fixations. Several studies employed deep learning to achieve high accuracy of prediction of human eye fixations. These studies rely on pre-trained deep learning for object classification. They exploit deep learning either as a transfer-learning problem, or the weights of the pre-trained network as the initialization to learn a saliency model. The utilization of such pre-trained neural networks is due to the relatively small datasets of human fixations available to train a deep learning model. Another relatively less prioritized problem is amount of computation of such …

Cooperative Learning For The Consensus Of Multi-Agent Systems, Qishuai Liu

Department of Electrical and Computer Engineering: Dissertations, Theses, and Student Research

Due to a lot of attention for the multi-agent system in recent years, the consensus algorithm gained immense popularity for building fault-tolerant systems in system and control theory. Generally, the consensus algorithm drives the swarm of agents to work as a coherent group that can reach an agreement regarding a certain quantity of interest, which depends on the state of all agents themselves. The most common consensus algorithm is the average consensus, the final consensus value of which is equal to the average of the initial values. If we want the agents to find the best area of the particular …

State-Of-The-Art Solution Techniques For Op And Top, Pieter Vansteenwegen, Aldy Gunawan

Research Collection School Of Computing and Information Systems

Definitions and mathematical models of the OP and the TOP were introduced in Chaps. 2 and 3. In this chapter, we will discuss the benchmark instances and state-of-the-art solution techniques for both OP and TOP. Some illustrations of benchmark instances and solutions are included in order to increase the understanding in the difficulty of solving this problem and to provide additional insights. The solution techniques are classified into two different categories: exact approaches and (meta)heuristic techniques.

Industry 4.0: Ethical And Moral Predicaments, W. Wang, Keng Siau

Research Collection School Of Computing and Information Systems

The advancements in software technology and data science are enabling Industry 4.0, aka the Fourth Industrial Revolution or the Industrial Internet of Things (IIoT). While the first three industrial revolutions have brought about immense change, the impact of Industry 4.0 will be much wider and far greater, especially with regard to the easily overlooked ethical and moral aspects. Widening wealth gaps between countries and among classes of people within countries, a potential growing unemployment rate, data privacy and accessibility issues, and the treatment of intelligent agents (e.g., military robots) present new and complex ethical and moral dilemmas. In this article, …

We The People: These United Divided States, Catherine Powell

Cardozo Law Review

In the wake of President Trump's announcement that he will withdraw the United States from the 2015 Paris Agreement on climate change, then-California Governor Jerry Brown called on the President to fight climate change or to "get out of the way" while the rest of the world works to reduce emissions and invest in clean energy. Similarly, former New York City Mayor Michael Bloomberg-now a United Nations (U.N.) Special Envoy for Cities and Climate Change-said, "If Washington won't lead, then mayors and governors will." Indeed, Trump's threat to withdraw has not only been met with widespread criticism and derision abroad …

Arthur Jacobson And The Normativity Of Jewish Law, Uriel Procaccia

Cardozo Law Review

Arthur Jacobson has been for several decades a leading expert in contract law; he was recruited to edit the supplement of the most respected treatise on the subject, Corbin on Contracts, and has shared his expertise, to great acclaim, with generations of colleagues and students. His interest in Jewish Law, on the other hand, is of a more recent vintage. But it appears that since this recent calling took a grip on his mind it captured his intellectual curiosity to the point of dominating the rich array of his other inquisitive interests with the sole exception, perhaps, of his …

Cover Crop Biomass Production And Effects On Soil Moisture In The Upstate Of South Carolina, Ricardo St Aime

All Theses

Cover crops can protect soil health and increase climate resilience of the crop production systems. However, few agronomic crop producers in the southern USA currently use them. Constraints on producer use of cover crops in this region include, lack of knowledge regarding the best cover crops for their locality and cropping system and potential impacts on plant-available soil moisture along with concerns about the cost and labor associated with cover cropping. The present research evaluated biomass production, soil moisture retention, and water use efficiency of single species and multi-species fall-winter cover crops in South Carolina. Overall, a mixture of Austrian …

The Impact Of Traumatic Brain Injury On Neuropsychological Functioning And Tau Accumulation Later In Life In Military Veterans, Lindsay Eatman

Dissertations

Abstract The following study examines aging veterans that experience a TBI while in service and

compares to older veteran without a history of TBI. The objective is to look at cognitive profile later in life for military veterans with moderate to severe TBI different and compared to older veterans with no history of TBI. Is there a difference in tau accumulations on neuroimaging in military veterans with moderate to severe TBI compared to older veterans without a history of TBI? What is the relationship between the cognitive profile and tau imaging correlates for military veterans with moderate to severe TBI …

Dairy Cattle Handling Extension Programs: Training Workers And Cattle, Amber L. Adams, Michaela Kristula, Meggan V. Hain

Journal of Extension

Cattle handling Extension program educators often overlook the animal training component of efficient handling. The objectives of the study described in this article were to measure young dairy heifer behavioral responses toward handlers who received different types of training and to document whether repeated handling or time of day of handling affected heifer behavioral responses to handlers. Six handlers received training through a lecture, hands-on workshop, or video. An observer recorded heifer behavior during handling tests. The day and time of heifer training were most influential on heifer behavior, but heifer handling ease was improved when handlers had participated in …

How Forming A Cooperative Network Improved Services And Outcomes For Farmers, Ellen B. Mallory, Tori Lee Jackson, Leslie A. Forstadt

Journal of Extension

The Beginning Farmer Resource Network of Maine (BFRN) is a model for maximizing resources and improving farmer services through increased statewide communication and collaboration among a diverse group of agricultural service providers. Formed in 2012, BFRN is a cooperative network with shared leadership and no financial overhead. In a 2018 survey regarding BFRN's impacts, 92% of members (22 of 24 responding members) said they were more effective and efficient. The survey results also indicated that over 800 farmers had made positive changes as a result of members' participation in BFRN. BFRN's continuing high level of activity is a testament to …

Factors Influencing Farmers’ Adoption And Intentions To Adopt Pollinator Conservation Programs And Practices In Illinois, U.S.A., Christopher M. Sedivy

Theses

Due to the growing recognition of the social and ecological consequences of the global decline in pollinator species, the need for more effective policies for the conservation of pollinator habitat is now more than ever. These trends call for research that provides a deeper understanding of farmers' decision-making processes. In this regard, this study tested a modified version of the Theory of Planned Behavior as a conceptual model for explaining farmers' perceptions and behavior regarding the adoption of pollinator conservation programs and practices. Specifically, the study tested how farmers' perceived behavioral control, attitudes, subjective norms, concern about herbicide resistance issues, …

An Evaluation Of The Impact Of Anger On Aggression In Pretend Play And The Role Of Pretend Play In Regulating Anger In Preschoolers, Kristen Boog

Theses

Multiple studies have supported the link between anger and aggression. It is not uncommon for anger to result in aggressive acts, especially in children still learning socially appropriate ways of coping. Furthermore, childhood aggression is typically viewed as a concerning act that should be reduced or eliminated. However, some research shows that within pretend play, aggression can be adaptive. Studies have supported the Mastery/Catharsis hypothesis, the theory that aggression in pretend play acts as a release of emotions and processing of events, by showing that children who exhibit more aggression within their pretend play exhibit less aggression outside of play. …

A Microchemical Analysis Of Native Fish Passage Through Brandon Road Lock And Dam, Des Plaines River, Illinois, Claire Snyder

Theses

Modifications to Brandon Road Lock and Dam (BRLD), located on the Des Plaines River in northeastern Illinois, have been proposed to prevent the upstream transfer of aquatic invasive species, particularly Asian carps, into the Great Lakes Basin. These modifications, including the installation of an electric barrier, acoustic fish deterrent, and air bubble curtain, are designed to completely eliminate all upstream fish passage and may negatively impact native fish populations in the Des Plaines River by reducing upstream movement and potentially fragmenting populations. BRLD is situated just 21 km upstream of the Des Plaines River mouth, and fish are only able …

Population Genetics Of Rice Rats (Oryzomys Palustris) At The Northern Edge Of The Species Range, Phillip Conrad Williams

Theses

The marsh rice rat (Oryzomys sp.) is a semiaquatic rodent native to wetlands in the southeastern United States. The northwestern-most part of the rice rat’s range extends to Illinois where rice rats are found in wetlands across the southern part of the state. Recent studies have shown that rice rats in the United States can be divided into two species: O. palustris and O. texensis, but the taxonomic status of rice rats in Southern Illinois is unclear. To resolve this, I sequenced cytochrome-b and the control region, two regions of mitochondrial DNA, for 16 rice rats and constructed a phylogeny …

Melanopsin-Containing Iprgcs Are Resistant To Excitotoxic Injury And Maintain Functional Non-Image Forming Behaviors After Insult In A Diurnal Rodent Model, Garrett M. Fogo, Dorela D. Shuboni-Mulligan, Andrew J. Gall

Faculty Publications

Intrinsically photosensitive retinal ganglion cells (ipRGCs) are critical for the light signaling properties of non-image forming vision. Melanopsin-expressing ipRGCs project to retinorecipient brain regions involved in modulating circadian rhythms. Melanopsin has been shown to play an important role in how animals respond to light, including photoentrainment, masking (i.e., acute behavioral responses to light), and the pupillary light reflex (PLR). Importantly, ipRGCs are resistant to various forms of damage, including ocular hypertension, optic nerve crush, and excitotoxicity via N-methyl-D-aspartic acid (NMDA) administration. Although these cells are resistant to various forms of injury, the question still remains whether or …

The Transcriptome Of The Veiled Chameleon (Chamaeleo Calyptratus): A Resource For Studying The Evolution And Development Of Vertebrates, Brendan John Pinto, Daren C. Card, Todd A. Castoe, Raul E. Diaz Jr., Stuart V. Nielsen, Paul A. Trainor, Tony Gamble

Biological Sciences Faculty Research and Publications

Purpose

The veiled chameleon (Chamaeleo calyptratus) is an emerging model system for studying functional morphology and evolutionary developmental biology (evo‐devo). Chameleons possess body plans that are highly adapted to an arboreal life style, featuring laterally compressed bodies, split hands/ft for grasping, a projectile tongue, turreted independently moving eyes, and a prehensile tail. Despite being one of the most phenotypically divergent clades of tetrapods, genomic resources for chameleons are severely lacking.

Methods

To address this lack of resources, we used RNAseq to generate 288 million raw Illumina sequence reads from four adult tissues (male and female eyes and gonads) …

Evaluating Responses Of Benthic Macrofauna To Artificial Reef Presence In The Gulf Of Mexico, Douglas Faircloth

Theses and Dissertations

Artificial reef research has long concerned itself with the interactions of fishes and has tended to favor commercially valuable species. Because of this, a larger yet less known group that heavily benefits fishes have been overlooked; benthic macrofauna. Benthic macrofauna are marine invertebrates that live below the sediment-water interface and play many roles in the ecosystem. Macrofauna are important prey items, ecosystem engineers, and bioindicators, as well as being ubiquitous in the marine environment. Since macrofauna have been largely ignored in this field, not much is known regarding their interaction with the placement of artificial reefs. To try and fill …