UARK (University of Arkansas )
Not a member yet
19829 research outputs found
Sort by
Historical Note: The Capricious Nature of Privanzas in Habsburg Spain: 1556-1665
No full textThe vast reaches of the Spanish Habsburg empire necessitated a change in court politics in order to manage day-to-day issues for the king. The answer to this problem in Spain, as in other European kingdoms, was the emergence of the privado or court favorite as a legitimate official who would ideally manage the influx of state affairs, limiting access to the king that would have been previously attainable through audiences. While the original purpose of the privado was to alleviate the countless duties of an overburdened monarch, early modern privanzas became a form of art in the expression of absolute authority. Using major works from immanent historians of Habsburg Spain, this essay will demonstrate the changing nature of privanzas from the early sixteenth to the mid-seventeenth century
Sustainable and profitable broiler nutrition
No full textThese proceedings accompany a presentation on optimizing protein nutrition of broilers while minimizing environmental impacts of nitrogen excretion. The continual advancement of muscle development in modern broilers requires constant alignment of amino acid needs. These proceedings outline the importance and progression of feed grade amino acid supplementation in broiler nutrition
Parental Expectations of Pediatric Care for Children
No full textAccess to childhood pediatrics is a major factor for a full and healthy childhood for all children from adolescence to adulthood. However, the physical health aspect has been the main focus of most primary care clinics, and there is little focus on mental health. Mental health issues, which involve anxiety, depression, and post-traumatic stress, are more prominent than they have ever been, as up to 30% of children have experienced mental health issues that involve post-traumatic stress disorder, especially during the pandemic years. This study employed a non-experimental, quantitative analysis utilizing online closed-ended survey questions. Caretakers were offered an anonymous, self-reporting survey due to the nature of the questions being asked about their children’s healthcare. This study found that parents believe that their pediatricians can make accurate evaluations related to physical health concerns for children, but are skeptical of evaluations in other health areas, such as mental health. Only 42.9% of parents believed their child’s pediatric physician could make an accurate evaluation of their child’s mental health. Through this research, the opportunity has arisen to amplify areas that need improvement in pediatrics, achieving the goal of understanding what parents expect for their children and what type of care they desire to make sure that their children are healthy in every way possible. Results indicate the need for a further understanding of mental health in pediatrics
The International Perception of the Irish Republican Army and Chechen Insurgency
No full textThe purpose of this article is to explain how acts of violence influenced the media’s description of the Irish Republican Army and Chechen insurgencies and how the label of ‘terrorist’ affected the perception of the Anglo-Irish and Russo-Chechen conflicts. Quantitative data from the New York Times and International Newsstream databases are used to examine the change in word frequency to describe the IRA and Chechen fighters across a twelve-year span and four-month span before and after certain international events
The Age of the Sporting, Soaplocks, and Separate Spheres
No full textIn the mid-nineteenth century in America a new market economy spurred increasing numbers of people to leave their homes in rural areas in favor of rapidly growing urban areas. This paper investigates the lives of the young men in urban settings and how they impacted American culture at large and the development of the middle-class
Economic Contribution of the Agricultural Sector to the Arkansas Economy in 2023
No full textThis report is the eighteenth in a series that examines agriculture’s economic contribution to the Arkansas economy. The total economic contribution of agriculture (direct, indirect, and induced effects) on value added, employment, and labor income was estimated with the Impact Analysis for Planning System (IMPLAN) for the most recent year available, 2023
Understanding Glufosinate Resistance in Palmer Amaranth and Examination of Additives for Improved Weed Control
No full textThe aim of this dissertation was to: 1) provide an in-depth review about the potential use of natural and synthetic glutathione S-transferase (GST) inhibitors to enhance herbicidal activity or induce crop safety; 2) determine if the addition of metabolic inhibitors to glufosinate is an effective approach to enhance weed control; 3) investigate the mechanism conferring resistance to glufosinate in a highly-resistant Palmer amaranth accession; 4) characterize the genomic rearrangement involved in glutamine synthetase 2 amplification in a Palmer amaranth accession resistant to both glufosinate and glyphosate; 5) quantify the distribution of glufosinate resistance among Palmer amaranth accessions within a 15-km radius surrounding the glufosinate-resistant Palmer amaranth accession initially collected in 2020; 6) determine the postemergence resistance profile of glufosinate-resistant Palmer amaranth accession and identify effective herbicides to control it under field conditions; and 7) evaluate different herbicide programs and the presence of residual herbicides in soybean to control seven-way herbicide-resistant Palmer amaranth accession. Several GST inhibitors have the potential to increase efficacy when mixed with herbicides. However, further research is needed, particularly in vivo experiments. A formulated premixture of glufosinate with the plant-derived flavonoid baicalin enhanced weed control. The amplification and overexpression of the chloroplastic glutamine synthetase (GS2; enzyme targeted by glufosinate) was characterized as one of the resistance mechanisms conferring glufosinate resistance in Palmer amaranth. Extrachromosomal circular DNAs (eccDNAs) were identified as the cause of this increase in GS2. The eccDNA structure co-duplicated 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS), which is the enzyme targeted by glyphosate, along with the increase in GS2. Palmer amaranth accessions collected in 2023 were capable of surviving glufosinate applications, and the presence of GS2 amplification was observed in crop fields near the location where the 2020 sample was originally collected, suggesting that glufosinate resistance is present in more areas than initially detected. This result is alarming due to the resistance profile also observed in this accession. Additional investigations with the initial glufosinate-resistant accession revealed the presence of seven-way resistance to postemergence herbicides from groups 2, 4, 5, 9, 10, 14, and 27 (Weed Science Society of America/Herbicide Resistance Action Committee). Field experiments showed that this accession was more likely controlled by preemergence than postemergence herbicide chemistries. A high level of control of the seven-way resistant accession was achievable when residual herbicides were applied sequentially with 2,4-D or dicamba. However, not all plants were controlled, and a zero-tolerance approach should be employed to avoid seed deposition into soil seedbank