Digital Commons Network^™

Effect Of Nitrogen Fertilization Upon Winter Growth In Natural Pastures Of The South East Of Buenos Aires Province, Argentina, R C. Fernandez Grecco, A E. Mazzanti, H A. Echeverria

IGC Proceedings (1977-2023)

The effect of winter nitrogen fertilization upon herbage accumulation during the winter-spring period on a natural pasture of the Flooding Pampa dominated by cool season annual (Lolium multiflorum) and perennial (Stipa neesiana) grasses was evaluated. The experiment was carried out from August to November in 1994 and 1995. Fertilization treatments were: 0, 50, 100, 150, 200 and 250 kgN ha- 1 (N0, N50, N100, N150, N200 and N250, respectively). The experimental plots were set out in three randomized blocks. In 1994, maximum forage accumulation was reached at N150, and no significant differences were found among N150, …

Effectivity Of Arbuscular Mycorrhizas In Sustainable Grassland Agriculture Following Conversion From Intensive Management, W R. Eason, J Scullion, E P. Scott

IGC Proceedings (1977-2023)

With increased interest in sustainable agriculture, attention has focused on the role of arbuscular mycorrhiza (AM) in the productivity of agricultural systems. AM spores were taken from grassland and grass-arable systems with either a history of high-input, conventional, or low-input, organic management, and used as a source of inoculum in host plants (Allium amelioprasum, Trifolium repens and Lolium perenne). Spores from organic management systems produced a greater yield response than those from conventional systems. Where various spore inoculum produced differences in host growth responses, it was observed that the infected root of these host plants also produced similar …

Buffelgrass Forage And Seed Production Responses To N And Fertilization, W R. Ocumpaugh, M A. Hussey, B L. Burson

IGC Proceedings (1977-2023)

Forage and seed production responses to nitrogen (N) and phosphorus (P) fertilizer of Common buffelgrass (Cenchrus ciliaris L.) were evaluated for three years (1991-93). An incomplete factorial set of five rates of N and P were applied each year. Seed data were collected by hand stripping mature seed followed by a forage harvest. Seed quality characteristics were determined on each seed sample. No response to N fertilizer was observed in 1991 nor to P in any year. In 1992, there was a linear forage yield response to N fertilizer. In 1993, both the linear and quadratic effects of N …

Grassland Management In Central Area Of The Masurian Landscape Park, K Mlynarczyk, E Marks, E Korona

IGC Proceedings (1977-2023)

Permanent grassland occupy some 12% of the area of the Masurian Landscape Park. The Cirsio-Polygonetum plant association was distinguished on the semi-natural meadows situated on the peat-marsh soil. Changes in botanical composition of the meadow sward and the productivity of DM, against a background of different mineral fertilization, were examined in a medium-scale plot experiment. It was concluded that both aspects ofutilization must be accorded high priority in the case of extensively managed meadows: medium level of forage production and the landscape conservation.

Reserving Pastures In Communal Grasslands By Agropastoralists Of Tanzania, M L. Kusekwa, A J. Mwilawa, J.K K. Msechu

IGC Proceedings (1977-2023)

Studies were conducted in “Maasai” and “Gogo” tribal communities to gain understanding of traditional management of reserved pastures. Survey techniques were used and forage production and chemical composition were estimated. Household heads were invariably old men who had no formal education. Household size averaged 14 and 11, in Maasai and Gogo tribes respectively. Most reserved pastures were privately owned. Over 90% of pastoralists preferred individual ownership of reserved grazing. Herbage production was 2510 kg DM/ha in Maasai and 3680 kg DM/ha in Gogo locations. Pastures and low protein content (5.1-6.5% CP). Constraints to reserve grazing strategies were land and water …

Impact Of Extensive Management On Demography Of One Invasive Species Of Permanent Grasslands, D Magda

IGC Proceedings (1977-2023)

The objective of this study is to show the effect of extensive practices on the population dynamics of a grassland species (Chaerophyllum aureum) in order to control invasion process. Fertilisation intensity (none or 45g/m2), number (none, one or two) and date of cutting (before or after seed maturity) have been experienced on permanent plots in fields to follow consequences on demography of adults and seedlings. Adult density is regulated through cutting effect and intraspecific competition process. Reduction of competition by cutting leads to a paradoxal highest adult survival rate in on cut treatment compared with abandoned invaded fields. …

Influence Of Drying Method And Temperature On Ruminal Degradable Protein Of Switchgrass, D E. Farnham, K J. Moore, J R. George

IGC Proceedings (1977-2023)

The nutritional value of herbage protein fed to ruminant livestock can be influenced greatly by the extent to which it is degraded in the rumen. This study was conducted to determine if drying method and temperature alters measurements of in situ ruminal escape protein (EP) of switchgrass herbage. Switchgrass harvested at the pre-heading stage was either air dried, freeze dried, or oven dried at 38, 49, 60, or 710 C. Samples from each of the six drying treatments were digested in situ in Dacron bags for 4, 8, 12, or 16 h. Drying treatment had a significant impact on EP …

Development Of Natural Horse Pastures In Finland In The 1900s, H Jansson, K H. Jansson, A Olin, T Talikka, J Pykala

IGC Proceedings (1977-2023)

The purpose of the study was to assess the importance of natural pastures as a growing environment for horses and, at the same time, to evaluate the landscape value of such pastures. Another aim was to look at possible ways of conserving areas which have been in use as horse pastures for a long period of time as traditional biotopes belonging to the Finnish horse grazing culture, and to examine how their management and care could be improved.

Relationship Of Soil To Native Pasture In A Flooding Pampa Area (Argentine), S P. Debelis, A A. Bozzo, A Bujan, M B. Barrios

IGC Proceedings (1977-2023)

The influence of the topography in soils found in the area surrounding the Chascomús lagoon is examined. The study of the profiles within the representative transect in each microenvironment reveals changes related to its traits. Its relationship with the vegetation present in each toposequence position was observed. The worsening of the natural drainage conditions, are related to reduction of organic matter, increase in the values of pH and PSI, greater intensity of hydromorphic traces and appearance of groups of characteristic species.

Extensification Of Sheep Grazing Systems: Effects On Soil Nutrients, Species Composition And Animal Production, C A. Marriott, I J. Gordon

IGC Proceedings (1977-2023)

The effects of ceasing fertiliser inputs to perennial ryegrass/white clover swards, combined with patterns of seasonal grazing, on soil nutrient status, floristic composition and animal production (ewes and single lambs) were studied in a long-term experiment at three upland sites in Scotland. Four unfertilised treatments had a factorial combination of seasonal grazing in summer and autumn at two sward heights (4 and 8 cm). There was also an ungrazed, unfertilised control and a fertilised treatment (140 kg N/ha plus maintenance P and K), grazed at 4 cm sward height in both seasons. All treatments were imposed annually from 1990/91. By …

Grassland Management For Geese: Sustainable Use For Conservation And Agriculture, S M. Percival, R Lilley

IGC Proceedings (1977-2023)

Increasing numbers of overwintering wild geese have caused considerable problems to agriculture but are often also of conservation concern as their populations are relatively small. Islay, Scotland, is one site where this problem is particularly acute. We studied the two goose species which use this site, the barnacle goose, Branta leucopsis, and the white-fronted goose, Anser albifrons flavirostris, and found that they preferred younger pastures located closer to their roost sites. These preferred areas could be important in developing a sustainable strategy for future goose management. Further non-sustainable population increases might be avoided by increasing disturbance in these areas.

What's Next, And When Can We Go There? Lessons From Leading Trans 101 For Libraries, Stephen G. Krueger

Library Presentations

One way that some libraries attempt to improve their services to trans and gender diverse patrons is by encouraging employees to attend a Trans 101 workshop or equivalent. But this alone isn’t enough; it needs follow-up and long-term commitment to actually make a library inclusive for people of all genders. In this session, the presenter (who has led many trans inclusion workshops and presentations for libraries) will address the limitations of current attempts at trans and gender diverse inclusion in libraries, and offer strategies for building on these to more meaningfully integrate gender inclusion into library work.

This Be The Beloved Curse: Learning To Love Ever-Evolving Born-Digital Description, Ruth E. Bryan, Megan M. Mummey, Andrew Mcdonnell

Library Presentations

The title of the presentation, “This be the beloved curse” is taken from Philip Larkin’s poem “This be the curse.” In it, Larkin describes the cycle of life where children are messed up by their parents, who, with the best intentions, “...fill you with the faults they had/and add some extra, just for you.” He goes on to explain, though, that our parents, in their turn, were equally messed up “...by fools in old-style hats and coats…”, handing on what Larkin terms “misery” from one generation to another.

As archivists, and especially as archivists working with digital formats, our “beloved …

Association Between Opioid-Benzodiazepine Trajectories And Injurious Fall Risk Among Us Medicare Beneficiaries., Grace Hsin-Min Wang, Juan M. Hincapie-Castillo, Walid F. Gellad, Bobby L. Jones, Ronald I. Shorr, Seonkyeong Yang, Debbie L. Wilson, Jeannie K. Lee, Gary M. Reisfield, Chian K. Kwoh, Chris Delcher, Khoa A. Nguyen, Christopher A. Harle, Zachary A. Marcum, Wei-Hsuan Lo-Ciganic

Pharmacy Practice and Science Faculty Publications

Background/Objectives: Concurrent opioid (OPI) and benzodiazepine (BZD) use may exacerbate injurious fall risk (e.g., falls and fractures) compared to no use or use alone. Yet, patients may need concurrent OPI-BZD use for co-occurring conditions (e.g., pain and anxiety). Therefore, we examined the association between longitudinal OPI-BZD dosing patterns and subsequent injurious fall risk. Methods: We conducted a retrospective cohort study including non-cancer fee-for-service Medicare beneficiaries initiating OPI and/or BZD in 2016-2018. We identified OPI-BZD use patterns during the 3 months following OPI and/or BZD initiation (i.e., trajectory period) using group-based multi-trajectory models. We estimated the time to first injurious falls …

Assessing The Feasibility Of A Multimodal Liquid Biopsy For The Diagnosis Of Hpv-Associated Oropharyngeal Squamous Cell Carcinoma., James S. Lewis, Saskia Naegele, Vasileios Efthymiou, Mitra Mehrad, Kim A. Ely, Tim Waterboer, Krystle A. Lang Kuhs, Seth J. Davis, Kelsey Richard, Dipon Das, Daniel L. Faden

Markey Cancer Center Faculty Publications

OBJECTIVES: In this feasibility study, we explored the combined use of circulating tumor human papillomavirus (HPV) DNA (ctHPVDNA) and HPV serology as diagnostic tests for HPV-associated oropharyngeal squamous cell carcinoma (OPSCC).

METHODS: Among patients with research-banked serum or plasma at diagnosis, IgG antibodies to oncoproteins from HPV types 16, 18, 31, 33, 35, 45, 52, and 58 were detected with multiplex serology. Positivity for HPV 16 was defined based on detection of combinations of anti-E6, E1, E2, and E7 and for other high-risk types on detection of anti-E6 and anti-E7. Circulating tumor HPV DNA was detected by custom digital droplet …

Insights Into The Influence Of Income Variability On Cardiovascular Risk In Non-Elderly Adults With Type 2 Diabetes, Ketrell Mcwhorter

UK CARES Faculty Publications

No abstract provided.

Forage News [2024-06], University Of Kentucky

Forage News

No abstract provided.

Small Island Risks: Research Reflections For Disaster Anthropologists And Climate Ethnographers, Crystal A. Felima

UK CARES Faculty Publications

Disasters and climate-related events, including tropical storms, droughts, coastal erosion, and ocean acidification, threaten small island nations. Given the urgency of reducing disaster risks and the effects of climate change on vulnerable populations, this reflection essay pursues three objectives. First, it highlights the role of anthropology, ethnography, and multi-sited research in exploring disaster impacts, climate crises, and public policy in island communities. It then highlights national planning and inter-regional activities to build awareness of various risk reduction efforts by island nations and multi-governmental organizations. This article concludes with discussion prompts to engage researchers, scholars, students, and practitioners studying and working …

Wastewater Surveillance For Xylazine In Kentucky, Chris Delcher, Dana Quesinberry, Soroosh Torabi, Scott Berry, James W. Keck, Abhya Rani, Bikram Subedi

UK CARES Faculty Publications

Introduction: In the U.S., xylazine, the veterinary non-opioid sedative, has emerged as a major threat to people who use illicitly manufactured fentanyl and other drugs. The aim of this study was to compare wastewater detection of xylazine with other public health and safety surveillance data from 2019 to 2023 in Kentucky.

Methods: Wastewater samples from 5 rest areas, 2 truck weigh stations, and 4 wastewater treat- ment plants were tested for xylazine. Wastewater xylazine positivity rates were compared with xyla- zine-positive submission rates from the National Forensic Laboratory Information System and Kentucky’s fatal overdoses in 6-month periods (Period 1=January−June; Period …

Neural Mechanisms Of Respiratory Interoception, Pei-Ying Sarah Chan, Lu-Yuan Lee, Paul W. Davenport

UK CARES Faculty Publications

Respiratory interoception is one of the internal bodily systems that is comprised of different types of somatic and visceral sensations elicited by different patterns of afferent input and respiratory motor drive mediating multiple respiratory modalities. Respiratory interoception is a complex system, having multiple afferents grouped into afferent clusters and projecting into both discriminative and affective centers that are directly related to the behavioral assessment of breathing. The multi-afferent system provides a spectrum of input that result in the ability to interpret the different types of respiratory interceptive sensations. This can result in a response, commonly reported as breathlessness or dyspnea. …

A Guide To Successful Management Of Collaborative Partnerships In Quantitative Research: An Illustration Of The Science Of Team Science., Alyssa Platt, Tracy Truong, Mary Boulos, Nichole E Carlson, Manisha Desai, Monica M Elam, Emily Slade, Alexandra L Hanlon, Jillian H Hurst, Maren K Olsen, Laila M Poisson, Lacey Rende, Gina-Maria Pomann

Biostatistics Faculty Publications

Data-intensive research continues to expand with the goal of improving healthcare delivery, clinical decision-making, and patient outcomes. Quantitative scientists, such as biostatisticians, epidemiologists, and informaticists, are tasked with turning data into health knowledge. In academic health centres, quantitative scientists are critical to the missions of biomedical discovery and improvement of health. Many academic health centres have developed centralized Quantitative Science Units which foster dual goals of professional development of quantitative scientists and producing high quality, reproducible domain research. Such units then develop teams of quantitative scientists who can collaborate with researchers. However, existing literature does not provide guidance on how …

Active And Retroactive Digital Newspaper Preservation, Andrew Mcdonnell

Library Faculty and Staff Publications

The University of Kentucky Libraries’ (UKL) long-running efforts to document and provide access to the state’s history via newspaper preservation have necessarily evolved over the last 80 years. As news formats and preservation technologies have changed, particularly in relation to born-digital media, the libraries’ efforts have had to keep pace. The race to preserve these materials before they disappear or are locked away on media inaccessible to modern computers is not always chronologically linear, though. Digital archivists and librarians must sometimes straddle multiple generations of technology to successfully migrate, capture, and otherwise preserve digital publications, and there is no single …

Best Practices For Maintenance Of Traffic On Interstate Pavement Rehabilitation Projects, Catherine Keathley, Ryan Griffith, Rachel Catchings

Kentucky Transportation Center Research Report

Across the United States, aging roadway infrastructure has led state departments of transportation (DOTs) to increase their focus on pavement rehabilitation projects. These projects upgrade existing infrastructure to meet the needs of current levels of vehicle use. On interstate rehabilitation projects, maintenance of traffic (MOT) is an especially important consideration. Having a good MOT plan for completing construction work is critical for maintaining facility capacity while ensuring the safety of the traveling public and roadway construction staff. This study explores on behalf of the Kentucky Transportation Cabinet (KYTC) best practices for MOT on interstate pavement rehabilitation projects. Based on a …

Accommodating Innovative Uses Of Public Right Of Way, Travis Thompson, David Moses, Candice Wallace, Pam Clay-Young, Arlen Sandlin

Kentucky Transportation Center Research Report

State departments of transportation (DOTs) are embracing the use of clean energy and connectivity (CEC) applications along publicly owned right of way (ROW). Applications such as wind and solar power installations, broadband lines, small cell wireless equipment, electric vehicle charging stations, and technologies related to connected and automated vehicles (CAVs) hold considerable promise for conferring environmental benefits, energy savings, and generating much-needed revenue for DOTs. This report explores innovative uses of state-owned ROW that the Kentucky Transportation Cabinet (KYTC) could implement. Although Kentucky may not be currently situated for all clean energy applications, opportunities in solar do currently exist and …

Limbic-Predominant Age-Related Tdp-43 Encephalopathy (Late-Nc): Co-Pathologies And Genetic Risk Factors Provide Clues About Pathogenesis, Peter T. Nelson, David Fardo, Xian Wu, Khine Zin Aung, Matthew D. Cykowski, Yuriko Katsumata

Neurology Faculty Publications

Limbic-predominant age-related TDP-43 encephalopathy neuropathologic change (LATE-NC) is detectable at autopsy in more than one- third of people beyond age 85 years and is robustly associated with dementia independent of other pathologies. Although LATE-NC has a large impact on public health, there remain uncertainties about the underlying biologic mechanisms. Here, we review the literature from human studies that may shed light on pathogenetic mechanisms. It is increasingly clear that certain combinations of pathologic changes tend to coexist in aging brains. Although “pure” LATE-NC is not rare, LATE-NC often coexists in the same brains with Alzheimer disease neuropathologic change, brain arteriolosclerosis, …

Comprehensive Assessment Of Tdp‑43 Neuropathology Data In The National Alzheimer’S Coordinating Center Database, Davis C. Woodworth, Katelynn M. Nguyen, Lorena Sordo, Kiana A. Scambray, Elizabeth Head, Claudia H. Kawas, María M. Corrada, Peter T. Nelson, S. Ahmad Sajjadi

Neurology Faculty Publications

TDP-43 proteinopathy is a salient neuropathologic feature in a subset of frontotemporal lobar degeneration (FTLD-TDP), in amyotrophic lateral sclerosis (ALS-TDP), and in limbic-predominant age-related TDP-43 encephalopathy neuropathologic change (LATE-NC), and is associated with hippocampal sclerosis of aging (HS-A). We examined TDP-43-related pathology data in the National Alzheimer’s Coordinating Center (NACC) in two parts: (I) availability of assessments, and (II) associations with clinical diagnoses and other neuropathologies in those with all TDP-43 measures available. Part I: Of 4326 participants with neuropathology data collected using forms that included TDP-43 assessments, data availability was highest for HS-A (97%) and ALS (94%), followed by …

Development Of A Sms Rollout Plan And Evaluation, Gabriel Dadi, Hala Nassereddine, Farshid Taherpour, Salena Pham

Kentucky Transportation Center Research Report

Many state transportation agencies have introduced safety management systems (SMSs) to improve employee safety and health programs. These systems let employees quickly access safety and health policies, procedures, training, responsibilities, resources, and incident reporting tools, often electronically. Instituting a SMS is a critical step in adopting a proactive, data-driven approach to organizational safety. The Kentucky Transportation Cabinet Secretary’s Office of Safety (SOS) worked with Kentucky Transportation Center (KTC) to acquire, adapt, and rollout the Boosting Occupational Outcomes in Transportation Safety (BOOTS) system, a new SMS. Researchers assisted KYTC by conducting pre-rollout focus groups, helping to bring the system online, providing …

Using Knowledge Of Human Factors To Strengthen Highway Design, Chris Van Dyke, Jeff Jasper, Jill Asher, Steve Waddle

Kentucky Transportation Center Research Report

Transportation practitioners recognize that leveraging knowledge of human factors in road design is critical for delivering safe mobility to the full spectrum of multimodal road users (motorists, pedestrians, micromobility users, transit users). Understanding how psychology, cognition, and behavioral tendencies shape the ways in which different road users interact with one another and the road environment itself is critical for creating design solutions that promote safe and efficient movement. NCHRP Report 600 (Human Factors Guidelines for Road Systems) provides guidance on integrating knowledge of human factors into design practice. While the report is a valuable resource, it appears to …

Coordinated Controls Of Residential Ev Chargers Considering High Power Appliances, Steven B. Poore, Rosemary E. Alden, Dan M. Ionel

Electrical and Computer Engineering Graduate Research

In addition to electric vehicle (EV) adoption, the electricity demand of the modern grid is also under change from the replacement of resistive electric water heaters (EWHs) with high-efficiency heat pump electric water heaters (HPWH). Typical load of a HPWH has two parts: a low power compressor and a backup high power resistive boosting element. Within this paper, residential load from a large field demonstration for over one thousand homes is simulated in virtual power plant (VPP) operation with realistic HPWH and EV synthetic modules based on big data from the latest CBECC-Res and National Household Travel Survey (NHTS). Simultaneous …

Voices Of Experience: Lay Perspectives On Severe Maternal Morbidity In Appalachia, Anna Hansen, Cassidy Carter, Nancy Schoenberg, Carrie B. Oser

UK CARES Faculty Publications

No abstract provided.