Digital Commons Network^™

Optimal Sizing Of Country-Scale Renewable Energy Systems Towards Green Transportation Sector In Developing Countries, Loiy Al-Ghussain, Adnan Darwish Ahmad, Ahmad M. Abubaker, Mohamed A. Mohamed, Muhammed A. Hassan, Nelson Akafuah

Institute of Research for Technology Development Faculty Publications

In the context of refining countries’ transition plans toward 100% shares of renewable systems in the electric power grids by 2050, this study aims to investigate, for the first time, the potential of covering the increasing energy demand for electric vehicles (EVs) using the previously planned hybrid renewable energy system (RES) for Jordan, which comprised wind, solar photovoltaic (PV), and battery energy storage systems (ESS). The optimal RES sizing is revisited to examine the influence of EV penetration percentages and charging rates (normal, medium, and fast) and optimize the charging periods to reduce system capacity. The results showed that for …

Forage News [2022-11], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

No abstract provided.

Their Challenges Are Our Challenges Too, Julene L. Jones, Megan Oakleaf, Jackie Belanger, Becky Croxton, Heather C. Owen

Library Faculty and Staff Publications

The Grand Challenges in Assessment Project (https://assessment.charlotte.edu/excellence-assessment/grand-challenges-assessment-project) is a national, collaborative effort to create national strategic plans to address pressing challenges facing assessment in higher education. Endorsed by key higher education assessment organizations including the Association for the Assessment of Learning in Higher Education (AALHE), the American Association of Colleges and Universities (AAC&U), and the National Institute for Learning Outcomes Assessment (NILOA), as well as the Assessment Institute, assessment practitioners and community members across higher education participated in the identification of three grand challenges facing assessment in academia: (1) using assessment findings to increase equity, (2) using assessment …

The Market For Classic French Modern Art Prior To 1940, Robert Jensen

Art and Visual Studies Presentations

Using a quantitative methodology based on auction and sales prices, the paper describes the high-end market for paintings between 1895 and 1839 (paintings selling for $10,000 or more), especially in reference to what the author describes as "classic French modern art." The paper compares prices between Old Master art, classic French modern art, and contemporary art during this period, and asks why classic French modern art sold for prices nearly as high as Old Master art did during this period, especially when compared to contemporary painting.

Association Of A Green Tea Extract With Serum Immunoglobulin G Status And Neonatal Vitality In Newborn Dairy Calves, M. E. Reis, Melissa C. Cantor, C. M. M. Bittar, Joao H. C. Costa

Animal and Food Sciences Faculty Publications

Poor vigor at birth has been associated with reduced IgG absorption from colostrum and a reduced vitality in neonatal dairy calves. Some natural compounds, such as green tea extract, may improve vitality in compromised calves. The objective of this randomized controlled trial was to evaluate the potential of supplementing a green tea extract (15 mL) to calves to improve vigor and activity behavior for the first 72 h postnatal. Also, this study aimed to investigate the influence of green tea extract supplementation on calf serum IgG concentration and the apparent efficiency of absorption (AEA) of colostral IgG. Holstein calves (n …

Examining The Effects Of Formal Education Level On The Montreal Cognitive Assessment, Renee S. White, Justin M. Barber, Jordan P. Harp, Gregory A. Jicha

Sanders-Brown Center on Aging Faculty Publications

Background: Brief, global assessments such as the Montreal Cognitive Assessment (MoCA) are widely used in primary care for assessing cognition in older adults. Like other neuropsychological instruments, lower formal education can influence MoCA interpretation.

Methods: Data from 2 large studies of cognitive aging were used—Alzheimer’s Disease Neuroimaging Initiative (ADNI) and National Alzheimer’s Coordinating Center (NACC). Both use comprehensive examinations to determine cognitive status and have brain amyloid status for many participants. Mixed models were used to account for random variation due to data source.

Results: Cognitively intact participants with lower education (≤12 years) were more likely than …

Multiple Gene Variants Linked To Alzheimer's-Type Clinical Dementia Via Gwas Are Also Associated With Non-Alzheimer's Neuropathologic Entities, Yuriko Katsumata, Lincoln M. P. Shade, Timothy J. Hohman, Julie A. Schneider, David A. Bennett, Jose M. Farfel, Walter A. Kukull, David W. Fardo, Peter T. Nelson

Sanders-Brown Center on Aging Faculty Publications

The classic pathologic hallmarks of Alzheimer’s disease (AD) are amyloid plaques and neurofibrillary tangles (AD neuropathologic changes, or ADNC). However, brains from individuals clinically diagnosed with “AD-type” (amnestic) dementia usually harbor heterogeneous neuropathologies in addition to, or other than, ADNC. We hypothesized that some AD-type dementia associated genetic single nucleotide variants (SNVs) identified from large genomewide association studies (GWAS) were associated with non-ADNC neuropathologies. To test this hypothesis, we analyzed data from multiple studies with available genotype and neuropathologic phenotype information. Clinical AD/dementia risk alleles of interest were derived from the very large GWAS by Bellenguez et al. (2022) who …

Best Practices For Highway Project Scoping, Jeff Jasper, Samantha Wright, Jon Wilcoxson, Robin Baskette, Christopher Van Dyke

Kentucky Transportation Center Research Report

One of the Kentucky Transportation Cabinet’s (KYTC) foremost priorities in fulfilling its mission is to deliver successful projects — quality solutions that meet the defined scope and are delivered on time and within the budget specified in the Highway Plan. When a project scope is not clearly defined or uncertain, revisions may take place after the project is already underway, leading to delays or overpromising what can be delivered. Ideally, a reliable, decisive project scope is defined in the early phases of the highway project development process. The scope should include a project definition that clearly communicates the project scope’s …

Rapid Pothole Repair In Concrete Bridge Decks, Abheetha Peiris, Issam Harik

Kentucky Transportation Center Research Report

Using traditional methods to repair potholes in reinforced concrete (RC) bridge decks is time-consuming and requires significant manpower and equipment. However, commercially available epoxies and similar materials provide a repair option that does not require saw cutting the deck around the pothole, concrete removal, and replacement. Researchers laboratory tested three epoxies to identify which is best for pothole repairs. Based on assessments of substrate penetration times and set times for epoxy and epoxy mortar, as well as compressive strength gain over time for epoxy mortar, researchers selected Sikadur 52 for static and dynamic bending tests using small-scale beams with simulated …

Nf-Κb Represses Retinoic Acid Receptor–Mediated Gprc5a Transactivation In Lung Epithelial Cells To Promote Neoplasia, Hongyong Song, Xiaofeng Ye, Yueling Liao, Siwei Zhang, Dongliang Xu, Shuangshuang Zhong, Bo Jing, Tong Wang, Beibei Sun, Jianhua Xu, Wenzheng Guo, Kaimi Li, Min Hu, Yanbin Kuang, Jing Ling, Tuo Zhang, Yadi Wu, Jing Du, Feng Yao, Y. Eugene Chin, Qi Wang, Binhua P. Zhou, Jiong Deng

Markey Cancer Center Faculty Publications

Chronic inflammation is associated with lung tumorigenesis, in which NF-κB–mediated epigenetic regulation plays a critical role. Lung tumor suppressor G protein–coupled receptor, family C, member 5A (GPRC5A), is repressed in most non–small cell lung cancer (NSCLC); however, the mechanisms remain unclear. Here, we show that NF-κB acts as a transcriptional repressor in suppression of GPRC5A. NF-κB induced GPRC5A repression both in vitro and in vivo. Intriguingly, transactivation of NF-κB downstream targets was not required, but the transactivation domain of RelA/p65 was required for GPRC5A repression. NF-κB did not bind to any potential cis-element in the GPRC5A promoter. Instead, p65 was …

Social Media And Contentious Action: The Use And Users Of Qq Groups In China, Zixue Tai

Journalism and Media Faculty Publications

This article presents an analysis of a netnographic study of QQ groups engaged in contentious activities in China. Informed primarily by semi‐structured in‐depth interviews of 34 participants and field observations through years of grounded research, the findings shed light on the communicative dynamics and mobilization strategies of QQ groups in nurturing contentious action and motivating mass participation in social protest. In‐group communication stays highly focused on the respective mission of the groups, and it cultivates a sense of shared awareness conducive to collective action. There is also a noticeable contagion effect that transfers the spirit of contestation in terms of …

Assessing The Global Drivers Of Sustained Economic Development: The Role Of Trade Openness, Financial Development, And Fdi, Riza Radmehr, Ernest Baba Ali, Samira Shayanmehr, Sayed Saghaian, Elham Darbandi, Ebenezer Agbozo, Samuel Asumadu Sarkodie

Agricultural Economics Faculty Publications

Achieving economic development is one of the most important economic goals of every country. Identifying the determinants of economic growth, is a useful tool for adopting appropriate economic policies. This study, therefore, empirically examines the impact of trade openness, foreign direct investment, and financial development on economic growth, across 62 countries over the period 1995–2016. These countries are divided into two groups: low-income and high-income countries. We employ the pooled mean group (PMG), mean group (MG), and dynamic fixed effect (DFE) estimation techniques on the cross-country panel data. The findings show a positive long run association between trade openness, foreign …

Extraction, Analysis, And Occurrence Of Per- And Polyfluoroalkyl Substances (Pfas) In Wastewater And After Municipal Biosolids Land Application To Determine Agricultural Loading, Justin Caniglia, Daniel D. Snow, Tiffany L. Messer, Shannon Bartelt-Hunt

Biomedical Engineering Faculty Publications

Given the ubiquitous detection of per- and polyfluoroalkyl substances (PFAS) within numerous soil and water environmental compartments, there is a need for global understanding of current methodologies for extracting water, solids, polar organic chemical integrative samplers (POCIS), and plant tissue for these substances. This study provides details of several current extraction methods, demonstrates the use of POCIS in monitoring these compounds in a wastewater environment, and provides evidence of detectable levels of certain PFAS compounds within Midwestern municipalities and agroecosystems. Validated extraction procedures help characterize occurrence and release of 18 PFAS in a midwestern wastewater treatment plant (WWTP), surface water, …

The Role Of Extended Grazing In Profitable Ruminant Livestock Operations, Jim Gerrish

Kentucky Grazing Conference

No abstract provided.

Hay Feeding Strategies To Build Fertility In Grazing Systems, Nick Roy, Fred Thomas

Kentucky Grazing Conference

No abstract provided.

Grazing Myths That Reduce Profitability, Greg Halich

Kentucky Grazing Conference

No abstract provided.

Right Sizing Your Cows For Profit, Les Anderson

Kentucky Grazing Conference

No abstract provided.

My Soil Is Alive! Introduction To Soil Life And Its Role In Profitable Grazing Systems, Ray Archuleta

Kentucky Grazing Conference

No abstract provided.

Interfacial Oxidative Oligomerization Of Catechol, Marcelo I. Guzman, Elizabeth A. Pillar-Little, Alexis J. Eugene

Chemistry Faculty Publications

The heterogeneous reaction between thin films of catechol exposed to O₃(g) creates hydroxyl radicals (HO^•) in situ, which in turn generate semiquinone radical intermediates in the path to form heavier polyhydroxylated biphenyl, terphenyl, and triphenylene products. Herein, the alteration of catechol aromatic surfaces and their chemical composition are studied during the heterogeneous oxidation of catechol films by O₃(g) molar ratios ≥ 230 ppbv at variable relative humidity levels (0% ≤ RH ≤ 90%). Fourier transform infrared micro-spectroscopy, atomic force microscopy, electrospray ionization mass spectrometry, and reverse-phase liquid chromatography with UV−visible and mass spectrometry detection …

Colorectal Cancer Screening Utilization Among Breast, Cervical, Prostate, Skin, And Lung Cancer Survivors, Meng-Han Tsai, Justin X. Moore, Lorriane A. Odhiambo, Sydney E. Andrzejak, Martha S. Tingen

Markey Cancer Center Faculty Publications

Purpose To examine whether sociodemographic characteristics, access to care, risk behavior factors, and chronic health conditions were associated with colorectal cancer (CRC) screening utilization among breast, cervical, prostate, skin, and lung cancer survivors.

Methods We analyzed the 2020 Behavioral Risk Factor Surveillance System (BRFSS) data on 9780 eligible cancer survivors. Descriptive statistics and multivariable logistic regression models were applied to assess the association between guideline- concordant CRC screening and the mentioned characteristics.

Results Overall, 81.9%, 65%, 88%,78.1%, and 80.1% of breast, cervical, prostate, skin, and lung cancer survivors received CRC screening, respectively (p-value < 0.001). In multivariable analysis, breast, cervical, and skin cancer survivors aged 60 years or older were associated with higher odds of receiving CRC screening. Respondents that had their recency of routine checkup two or more years before had lower odds of having CRC screening among cervical (OR = 0.06; 95% CI, 0.02–0.22), prostate (OR = 0.26; 95% CI, 0.14–0.49), and skin cancer (OR = 0.50; 95% CI, 0.36–0.70) survivors. The presence of chronic diseases was also associated with guideline-concordant CRC screening among breast, prostate, and skin cancer survivors.

Conclusions Our findings provide important evidence on …

A Pilot Study On The Impact Of The Bumptup® Mobile App On Physical Activity During And After Pregnancy, Rachel A. Tinius, Maire M. Blankenship, Allison M. Colao, Gregory S. Hawk, Madhawa Perera, Nancy E. Schoenberg

Statistics Faculty Publications

To combat maternal morbidity and mortality, interventions designed to increase physical activity levels during and after pregnancy are needed. Mobile phone-based interventions show considerable promise, and BumptUp® has been carefully developed to address the lack of exercise among pregnant and postpartum women. The primary goal of this pilot study was to test the potential efficacy of BumptUp® for improving physical activity among pregnant and postpartum women. A randomized controlled clinical trial was performed (N = 35) with women either receiving access to the mhealth app or an educational brochure. Physical activity and self-efficacy for exercise data were collected at baseline …

Gabapentin, A Human Therapeutic Medication And An Environmental Substance Transferring At Trace Levels To Horses: A Case Report., Kimberly Brewer, Jacob Machin, George Maylin, Clara Fenger, Abelardo Morales-Briceño, Thomas Tobin

Maxwell H. Gluck Equine Research Center Faculty Publications

Gabapentin, 1-(Aminomethyl)cyclohexaneacetic acid, MW 171.240, is a frequently prescribed high dose human medication that is also used recreationally. Gabapentin is orally absorbed; the dose can be 3,000 mg/day and it is excreted essentially unchanged in urine. Gabapentin is stable in the environment and routinely detected in urban wastewater. Gabapentin randomly transfers from humans to racing horses and is at times detected at pharmacologically ineffective / trace level concentrations in equine plasma and urine. In Ohio racing between January 2019 and July 2020,18 Gabapentin identifications, all less than 2 ng/ml in plasma, were reported. These identifications were ongoing because the horsemen …

Large Variability And Complexity Of Isothermal Solubility For A Series Of Redox-Active Phenothiazines†, Anton S. Perera, Thilini Malsha Suduwella, Nuwan Harsha Attanayake, Rahul Kant Jha, William L. Eubanks, Ilya A. Shkrob, Chad Risko, Aman Preet Kaur, Susan A. Odom

Chemistry Faculty Publications

The development of redox-active organic molecules (ROM) with large solubilities in all states of charge in organic electrolytes is imperative to the continued development of non-aqueous redox flow batteries. The capability to a priori predict ROM solubility would be a game changer, allowing for a move away from time and resource consuming trial-and-error approaches to materials design and deployment. However, it is not presently clear that such predictions are generally possible, even for chemically related ROM, given the large number of physicochemical factors in play. Here we use quantitative structure–property relationships (QSPR) to examine solubility trends for a set of …

Key Issues Generated From The Xi International Rangeland Congress 2021: Summary And Way Forward, D. L. Coppock, A. J. Ash, B. Irving

IGC Proceedings (1977-2023)

The important issues, knowledge gaps, and evolving research approaches for the global rangelands are summarised in this review of submissions to the Joint XXIV International Grasslands and XI International Rangelands Congress (IGC/IRC). In the big picture, it is concluded that stand-alone studies of livestock production are becoming rare compared to that of the past International Rangelands Congresses (IRC). Rather, added effort is now being directed at understanding the fuller context of social-ecological systems (SESs) on rangelands in a quest to improve the prospects for sustainable resource management as well as the enhancement of human welfare. Although climate change is upon …

Joint International Grassland And International Rangeland Congress Kenya 2021: Grasslands Summary, James L. Klotz, J. H. Bouton

IGC Proceedings (1977-2023)

This summary used as its main sources the plenary and keynote papers and talks in Sub-theme 2: Forage Production and Utilization and Sub-theme 3: Livestock Production Systems as well as a sampling of oral talks presented at the XXIV International Grassland Congress (IGC). This IGC was held virtually and jointly with the International Rangeland Congress and hosted in Nairobi, Kenya during 23-29 October 2021. The XXIV IGC was also the first to be held on the African continent in Congress' 94-year history. The summary is further focused on that information presented under the concept "cultivated grasslands" (e.g., a small number …

The Geopolitics Of Infrastructuralized Platforms: The Case Of Alibaba, Hong Shen, Yujia He

Patterson School of Diplomacy and International Commerce Faculty Publications

Contemporary digital platforms have become increasingly infrastructuralized, and started to raise geopolitical tensions with their global expansion. Amidst the heightened geopolitical competition between the US and China, the growing power of Chinese infrastructuralized platforms has made them the center of recent geopolitical dynamics. Drawing from an exploratory case study, this paper discusses Alibaba, one of the most prominent Chinese Internet giants, as an infrastructuralized platform, and highlights its geopolitical struggles. Often perceived as an e-commerce company, Alibaba has become ‘infrastructuralized’: its now-massive digital empire has moved beyond e-commerce, expanding into almost every aspect of China’s and global digital economy such …

Tensegrity Laboratory Drilling Rig For Earth And Space Drilling, Mining, And Exploration, Mohamed S. Khaled, Muhao Chen, Enrique Z. Losoya, Luis A. Rodriguez, Eduardo Gildin, Robert E. Skelton

Mechanical Engineering Faculty Publications

Drilling operations are increasingly becoming a manufacturing process where repeatability, versatility, and speed matter the most for an operator or future space missions. Nonetheless, the ongoing energy transition efforts will undoubtedly shape the objectives and priorities of drilling operators into new markets with unexplored technical challenges. Versatility, mobility, and automated systems will play crucial roles in determining successful applications. This study explores and introduces the application of tensegrity-based structures, commonly used in space exploration, to Earth and Space drilling systems by modeling, designing, and building a tensegrity-based miniature drilling rig. Robust models for designing a drilling rig based on tensegrity …

Forage News [2022-10], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

No abstract provided.

Barriers And Facilitators To Stool-Based Screening For Colorectal Cancer Among Black Louisville Residents, Aaron J. Kruse-Diehr, Derek Cegelka, Elizabeth Holtsclaw, Jerod L. Stapleton, Camille Burnett, Rose Wood, Carlee Combs, Lovoria B. Williams

UK CARES Faculty Publications

Knowledge of colorectal cancer (CRC) screening options remains suboptimal in Black populations, contributing to screening disparities. Guided by community-based participatory research (CBPR) principles, we partnered with five Black churches in Louisville, a region of Kentucky with high Black-white CRC screening disparities, to explore screening barriers and facilitators for CRC education and outreach. Project champions (n = 5) served as primary points of contact, developed project support within their churches, and were trained to recruit church and community members (n = 39) to participate in five semi-structured focus groups. Interview questions probed actual and perceived barriers to CRC screening, focusing on …

Kentucky Traffic Collision Facts 2021 Report, Paul Ross, Eric Green, Christopher Blackden, Michael Fields, Kenneth Agent, Christopher Van Dyke, Ed Harding

Kentucky Transportation Center Research Report

Each year the Kentucky Transportation Center publishes the Traffic Collision Facts report in collaboration with the Commonwealth of Kentucky, Kentucky State Police, and Kentucky Transportation Cabinet. This is the fiscal year 2022 report, which covers collisions reported during calendar year 2021. For the year, 734 fatal crashes, 20,117 nonfatal crashes, and 88,440 property damage only crashes occurred on the state’s roadways. Overall, 109,291 crashes were reported in calendar year 2021, a 8.4 percent increase over calendar year 2020.