Digital Commons Network^™

Nitrogen Or Water Limitation To Grassland Growth During A Moderate Dry Season In The Humid Tropics, P. Cruz, M. Boval

IGC Proceedings (1977-2023)

The aim of this work was to compare the effects of nitrogen and water shortage on grassland production during a moderate dry season in a tropical humid environment. The results of two experiments carried out in Guadeloupe (FWI) have shown that during dry spells, the reduction in growth of natural grasslands based on Angleton grass (Dichantium aristatum) is more easily corrected by nitrogen fertiliser application than by irrigation. This shows that it is not the availability of water, but that of nitrogen, which is limiting the primary production of Angleton grass, stands. This result is less clear for …

A Call To Action Toward Optimizing The Electrical Dose Received By Neural Targets In Spinal Cord Stimulation Therapy For Neuropathic Pain, Krishnan Chakravarthy, Rajiv Reddy, Adnan Al-Kaisy, Thomas Yearwood, Jay S. Grider

Anesthesiology Faculty Publications

Spinal cord stimulation has seen unprecedented growth in new technology in the 50 years since the first subdural implant. As we continue to grow our understanding of spinal cord stimulation and relevant mechanisms of action, novel questions arise as to electrical dosing optimization. Programming adjustment — dose titration — is often a process of trial and error that can be time-consuming and frustrating for both patient and clinician. In this report, we review the current preclinical and clinical knowledge base in order to provide insights that may be helpful in developing more rational approaches to spinal cord stimulation dosing. We …

Fusion And Beyond: Satellite Cell Contributions To Loading-Induced Skeletal Muscle Adaptation, Kevin A. Murach, Christopher S. Fry, Esther E. Dupont-Versteegden, John J. Mccarthy, Charlotte A. Peterson

Center for Muscle Biology Faculty Publications

Satellite cells support adult skeletal muscle fiber adaptations to loading in numerous ways. The fusion of satellite cells, driven by cell-autonomous and/or extrinsic factors, contributes new myonuclei to muscle fibers, associates with load-induced hypertrophy, and may support focal membrane damage repair and long-term myonuclear transcriptional output. Recent studies have also revealed that satellite cells communicate within their niche to mediate muscle remodeling in response to resistance exercise, regulating the activity of numerous cell types through various mechanisms such as secretory signaling and cell–cell contact. Muscular adaptation to resistance and endurance activity can be initiated and sustained for a period of …

Knowledge And Beliefs Associated With Environmental Health Literacy: A Case Study Focused On Toxic Metals Contamination Of Well Water, Kathleen M. Gray, Victoria Triana, Marti Lindsey, Benjamin Richmond, Anna G. Hoover, Chris Wiesen

Preventive Medicine and Environmental Health Faculty Publications

Environmental health literacy (EHL) is developing as a framework that can inform educational interventions designed to facilitate individual and collective action to protect health, yet EHL measurement poses several challenges. While some studies have measured environmental health knowledge resulting from interventions, few have incorporated skills and self-efficacy. In this study, a process-focused EHL instrument was developed, using the Newest Vital Sign (NVS) health literacy instrument as a model and tailoring it for the context of private well contamination with toxic metals. Forty-seven (47) participants, including undergraduate students and residents of communities with contaminated well water, piloted a prototype EHL instrument …

Using Technology To Enhance Teaching And Learning In Pharmacy Education, Clark D. Kebodeaux, Vivienne Mak

Pharmacy Practice and Science Faculty Publications

No abstract provided.

Letter To Editor Regarding The Ocean Study, Barbara P. Yawn, Barry Make, David M. Mannino, Fernando J. Martinez, Meilan K. Han

Preventive Medicine and Environmental Health Faculty Publications

No abstract provided.

In Situ Imaging Of Bacterial Outer Membrane Projections And Associated Protein Complexes Using Electron Cryo-Tomography, Mohammed Kaplan, Georges Chreifi, Lauren Ann Metskas, Janine Liedtke, Cecily R. Wood, Catherine M. Oikonomou, William J. Nicolas, Poorna Subramanian, Lori A. Zacharoff, Yuhang Wang, Yi-Wei Chang, Morgan Beeby, Megan J. Dobro, Yongtao Zhu, Mark J. Mcbride, Ariane Briegel, Carrie L. Shaffer, Grant J. Jensen

Veterinary Science Faculty Publications

The ability to produce outer membrane projections in the form of tubular membrane extensions (MEs) and membrane vesicles (MVs) is a widespread phenomenon among diderm bacteria. Despite this, our knowledge of the ultrastructure of these extensions and their associated protein complexes remains limited. Here, we surveyed the ultrastructure and formation of MEs and MVs, and their associated protein complexes, in tens of thousands of electron cryo-tomograms of ~90 bacterial species that we have collected for various projects over the past 15 years (Jensen lab database), in addition to data generated in the Briegel lab. We identified outer MEs and MVs …

Improving Overweight And Over-Dimensional Logistics And Truck Routing, Jerry Kissick, Jerry Pigman, Jennifer Walton

Kentucky Transportation Center Research Report

In 2012, the Kentucky Transportation Cabinet’s (KYTC) Division of Motor Carriers (DMC) issued 98,196 overweight or over-dimensional (OW/OD) permits. To determine whether a route can accommodate an OW/OD vehicle, analysts must have current and accurate data on construction schedules, road conditions, and detour routes, among other factors. This study documents processes used by DMC for permitting and routing OW/OD vehicles. It includes detailed flowcharts that capture each aspect analysts follow during the decision-making process. As part of this project, state transportation agency representatives from states bordering Kentucky (Illinois, Indiana, Ohio, West Virginia, Virginia, Tennessee, and Missouri) were interviewed to identify …

In-Cab Alert System For Commercial Motor Vehicle Drivers, Brian Howell, Jennifer Walton, Jeeyen Koo

Kentucky Transportation Center Research Report

In-cab telematic devices use an increasingly robust data platform and can be used to share safety alerts with other commercial vehicle drivers (CMV) drivers. Real-time alert data can come from state transportation agencies as well as from private companies. To address common quality and coordination issues among differing data sources, the Kentucky Transportation Center (KTC) partnered with the Kentucky Transportation Cabinet (KYTC) and a private vendor, PrePass, to share its App used to send information to CMV drivers. The project demonstrated a proof of concept for the delivery of timely in-cab alerts to warn CMV drivers of approaching roadway hazards. …

Application Of Artificial Neural Networks To Power System State Estimation, James P. Carmichael, Yuan Liao

Electrical and Computer Engineering Presentations

State estimation function is essential for effective and timely execution of power system automation and control systems, especially in modern active distribution systems where more intermittent renewable energy systems are integrated into the grid. Distribution system state estimation faces a lot of challenges including lack of monitoring devices and possible incorrect topology information. Developing efficient state estimation for distribution systems is thus of great interest. This paper presents results on utilizing artificial neural networks for this purpose.

Artificial neural networks have been used in power distribution system state estimation. However, there is a lack of systematic analysis and study of …

Role Of Protective Relaying In The Smart Grid, J. Anderson, Alex Apostolov, R. Fowler, J. Gers, R. Kazimier, S. Klecker, Yuan Liao, M. Majidi, P. Myrda, T. Raffield

Electrical and Computer Engineering Presentations

This paper discusses the role of protective relaying in a Smart Grid. It outlines the definition, attributes, and benefits of a Smart Grid. The role that protective relays can play in implementing Smart Grid functionality and the impact that a Smart Grid design may have on modern protective relays is discussed. Specific examples of Smart Grid applications that may be implemented using modern protective relays and other intelligent electronic devices are provided.

Geomagnetic Disturbances (Gmd) Impacts On Protection Systems, Qun Qiu, V. Madani, Tapan Manna, T. Raffield, S. Klecker, Yuan Liao, S. Meliopoulos, D. Fontana

Electrical and Computer Engineering Presentations

This paper provides background and historical events of Geomagnetic Disturbances (GMD), and reviews GMD impacts on power systems equipment, and associated protection and control systems, mitigating measures, and Geomagnetic Induced Current (GIC) monitoring methods. This paper is a summary of the IEEE PES-TR72 report, titled, GMD Impacts on Protection Systems, prepared by the K17 Working Group of the IEEE Power System Relaying and Control committee.

Analysis Of Rock Varnish From The Mojave Desert By Handheld Laser-Induced Breakdown Spectroscopy, Russell S. Harmon, Daria Khashchevskaya, Michelle Morency, Lewis A. Owen, Morgan Jennings, Jeffrey R. Knott, Jason M. Dortch

Faculty, Staff, and Affiliated Publications--KGS

Laser-induced breakdown spectroscopy (LIBS) is a form of optical emission spectroscopy that can be used for the rapid analysis of geological materials in the field under ambient environmental conditions. We describe here the innovative use of handheld LIBS for the in situ analysis of rock varnish. This thinly laminated and compositionally complex veneer forms slowly over time on rock surfaces in dryland regions and is particularly abundant across the Mojave Desert climatic region of east-central California (USA). Following the depth profiling examination of a varnished clast from colluvial gravel in Death Valley in the laboratory, our in situ analysis of …

High Depth-Of-Discharge Zinc Rechargeability Enabled By A Self-Assembled Polymeric Coating, David J. Arnot, Matthew B. Lim, Nelson S. Bell, Noah B. Schorr, Ryan C. Hill, Andrew Meyer, Yang-Tse Cheng, Timothy N. Lambert

Chemical and Materials Engineering Faculty Publications

Zinc has the potential for widespread use as an environmentally friendly and cost-effective anode material pending the resolution of rechargeability issues caused by active material loss and shape change. Here, a self-assembled Nafion-coated Celgard 3501 (NC-Celgard) separator is shown to enable unprecedented cycle life of a Zn anode in alkaline electrolyte at high depth-of-discharge (DOD_Zn). Using commercially relevant energy-dense electrodes with high areal capacities of 60 mAh cm^–2, Zn–Ni cells tested at 20% DOD_Zn cells achieve over 200 cycles while 50% DOD_Zn cells achieve over 100 cycles before failure. The 20% and 50% DOD …

Dietary And Pharmacologic Manipulations Of Host Lipids And Their Interaction With The Gut Microbiome In Non-Human Primates, Jennifer M. Lang, Leslie R. Sedgeman, Lei Cai, Joseph D. Layne, Zhen Wang, Calvin Pan, Richard Lee, Ryan E. Temel, Aldons J. Lusis

Physiology Faculty Publications

The gut microbiome influences nutrient processing as well as host physiology. Plasma lipid levels have been associated with the microbiome, although the underlying mechanisms are largely unknown, and the effects of dietary lipids on the gut microbiome in humans are not well-studied. We used a compilation of four studies utilizing non-human primates (Chlorocebus aethiops and Macaca fascicularis) with treatments that manipulated plasma lipid levels using dietary and pharmacological techniques, and characterized the microbiome using 16S rDNA. High-fat diets significantly reduced alpha diversity (Shannon) and the Firmicutes/Bacteroidetes ratio compared to chow diets, even when the diets had different compositions …

Cognitive And Behavioral Domains That Reliably Differentiate Normal Aging And Dementia In Down Syndrome, Jordan P. Harp, Lisa M. Koehl, Kathryn L. Van Pelt, Christy L. Hom, Eric Doran, Elizabeth Head, Ira T. Lott, Frederick A. Schmitt

Neurology Faculty Publications

Primary care integration of Down syndrome (DS)-specific dementia screening is strongly advised. The current study employed principal components analysis (PCA) and classification and regression tree (CART) analyses to identify an abbreviated battery for dementia classification. Scale- and subscale-level scores from 141 participants (no dementia n = 68; probable Alzheimer’s disease n = 73), for the Severe Impairment Battery (SIB), Dementia Scale for People with Learning Disabilities (DLD), and Vineland Adaptive Behavior Scales—Second Edition (Vineland-II) were analyzed. Two principle components (PC1, PC2) were identified with the odds of a probable dementia diagnosis increasing 2.54 times per PC1 unit increase and by …

Grassland Production And Management – Trends And Perspectives For The 21St Century, John Hodgson

IGC Proceedings (1977-2023)

The XIX International Congress is set in a time of unprecedented change, with increasing uncertainty about the long-term sustainability of established systems of land use. The major threats are the continuing rapid increase in the human population of the world, the pressure on land resources to meet food requirements, the effects of global warming on climate stability, and the consequence of these factors on land resource stability and food production potential. Overlying these threats is the impact of the global economy on land use policies.

Projections made at the XVIII International Grassland Congress in 1997 suggested that food production could …

Mechanisms Of Smoothened Regulation In Hedgehog Signaling, Jie Zhang, Zulong Liu, Jianhang Jia

Markey Cancer Center Faculty Publications

The seven-transmembrane protein, Smoothened (SMO), has shown to be critical for the hedgehog (HH) signal transduction on the cell membrane (and the cilium in vertebrates). SMO is subjected to multiple types of post-translational regulations, including phosphorylation, ubiquitination, and sumoylation, which alter SMO intracellular trafficking and cell surface accumulation. Recently, SMO is also shown to be regulated by small molecules, such as oxysterol, cholesterol, and phospholipid. The activity of SMO must be very well balanced by these different mechanisms in vivo because the malfunction of SMO will not only cause developmental defects in early stages, but also induce cancers in late …

Practice Of Rangeland Co‐Management In Hongyuan, Bai Ze

IGC Proceedings (1977-2023)

No abstract provided.

Association Between Post-Hospital Clinic And Telephone Follow-Up Provider Visits With 30-Day Readmission Risk In An Integrated Health System, Huong Q. Nguyen, Aileen Baecker, Timothy Ho, Dan N. Huynh, Heather L. Watson, Jing Li, Ernest Shen

Center for Health Services Research Faculty Publications

BACKGROUND: Follow-up visits with clinic providers after hospital discharge may not be feasible for some patients due to functional limitations, transportation challenges, need for physical distancing, or fear of exposure especially during the current COVID-19 pandemic.

METHODS: The aim of the study was to determine the effects of post-hospital clinic (POSH) and telephone (TPOSH) follow-up provider visits versus no visit on 30-day readmission. We used a retrospective cohort design based on data from 1/1/2017 to 12/31/2019 on adult patients (n = 213,513) discharged home from 15 Kaiser Permanente Southern California hospitals. Completion of POSH or TPOSH provider visits within …

Comparing A Dss And Farmers' Decisions For Rangeland Management In Semi Arid Namibia, D. F. Joubert, I. Zimmermann, J. Fendler, H. Winschiers, F. P. Graz

IGC Proceedings (1977-2023)

No abstract provided.

Building A Shared Diagnosis Of Land Use Within A Multi‐Stakeholder Platform In A Pastoral Mountainous Area In The Western Pyrenees, N. Girard, D. Magda, P. Gascouat, D. Lassalle

IGC Proceedings (1977-2023)

No abstract provided.

Data Management System For A Semiautonomous Shuttle Car For Underground Room And Pillar Coal Mines, Vasilis Androulakis, Steven Schafrik, Joseph Sottile, Zacharias Agioutantis

Mining Engineering Faculty Publications

In recent years, autonomous solutions in the multidisciplinary field of mining engineering have been an extremely popular applied research topic. This is a result of the increasing demands of society on mineral resources along with the accelerating exploitation of the currently economically viable resources, which lead the mining sector to turn to deeper, more-difficult-to-mine orebodies. An appropriate data management system comprises a crucial aspect of the designing and the engineering of a system that involves autonomous or semiautonomous vehicles. The vast volume of data collected from onboard sensors, as well as from a potential IoT network dispersed around a smart …

Effect Sizes And Intra-Cluster Correlation Coefficients Measured From The Green Dot High School Study For Guiding Sample Size Calculations When Designing Future Violence Prevention Cluster Randomized Trials In School Settings, Md. Tofial Azam, Heather M. Bush, Ann L. Coker, Philip M. Westgate

Biostatistics Faculty Publications

Purpose: Cluster randomized controlled trials (cRCTs) are popular in school-based research designs where schools are randomized to different trial arms. To help guide future study planning, we provide information on anticipated effect sizes and intra-cluster correlation coefficients (ICCs), as well as school sizes, for dating violence (DV) and interpersonal violence outcomes based on data from a cRCT which evaluated the bystander-based violence intervention ‘Green Dot’.

Methods: We utilized data from 25 schools from the Green Dot High School study. Effect size and ICC values corresponding to dating and interpersonal violence outcomes are obtained from linear mixed effect models. We …

Going Global: Interest In Global Health Among Us Otolaryngology Residents, Julia Toman, Melynda Barnes Oussayef, J. Zachary Porterfield

Otolaryngology--Head & Neck Surgery Faculty Publications

Background: To meet the rising interest in surgical global health, some surgical residency programs offer global health experiences. The level of interest in these programs, however, and their role in residency recruitment and career planning has not been systematically evaluated.

Objective: (1) Define interest in global health among Otolaryngology residents in the USA. (2) Assess engagement of Otolaryngology residencies in global health training. (3) Determine barriers to global health training in residency.

Methods: A survey questionnaire was developed and sent to all Otolaryngology Residency Program Directors for distribution to all current Otolaryngology residents in the US.

Results: A total of …

Persistence Of The Exotic Mirid Nesidiocoris Tenuis (Hemiptera: Miridae) In South Texas, Gabriela Esparza-Diaz, Thiago Marconi, Carlos A. Avila, Raul T. Villanueva

Entomology Faculty Publications

The Rio Grande Valley is one of the most productive agricultural areas in the U.S and is located in the southernmost part of Texas. In October 2013, we detected an exotic plant bug, Nesidiocoris tenuis Reuter (Hemiptera: Miridae: Bryocorinae) occurring in the region. Nesidiocoris tenuis has zoophytophagous habits; however, in the absence of insect prey, it feeds on its plant hosts. After its morphological and genetic identification, this study monitored the population of N. tenuis in its introduction phase in commercial fields and corroborated its establishment in research fields for three years. Populations of N. tenuis were high during the …

Western Beef Development Centre: A Model For Research And Demonstration In Western Canada, Paul G. Jefferson

IGC Proceedings (1977-2023)

No abstract provided.

Development And Psychometric Properties Of Surveys To Assess Patient And Family Caregiver Experience With Care Transitions, Joann Sorra, Katarzyna Zebrak, Deborah Carpenter, Theresa Famolaro, John Rauch, Jing Li, Terry Davis, Huong Q. Nguyen, Megan Mcintosh, Suzanne Mitchell, Karen B. Hirschman, Carol Levine, Jessica Miller Clouser, Jane Brock, Mark V. Williams

Center for Health Services Research Faculty Publications

Background

The purpose of this study was to develop and administer surveys that assess patient and family caregiver experiences with care transitions and examine the psychometric properties of the surveys. The surveys were designed to ask about 1) the transitional care services that matter most to patients and their caregivers and 2) care outcomes, including the overall quality of transitional care they received, patient self-reported health, and caregiver effort/stress.

Methods

Survey items were developed based on a review of the literature, existing surveys, focus groups, site visits, stakeholder and expert input, and patient and caregiver cognitive interviews. We administered mail …

Sustaining Cross-Departmental Programmatic Change For Reparative Description At The University Of Kentucky Special Collections Research Center, Megan M. Mummey

Library Presentations

No abstract provided.

Strategies For Sustaining Multiple Ecosystem Services From Rangelands, Kris M. Havstad, J. R. Brown, J. E. Herrick, D. P. C. Peters, E. L. Fredrickson, Brandon T. Bestelmeyer, R. Pieper

IGC Proceedings (1977-2023)

No abstract provided.