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Articles 1 - 30 of 44
Full-Text Articles in Physical Sciences and Mathematics
First Proof Of Concept Of Sustainable Metabolite Production From High Solids Fermentation Of Lignocellulosic Biomass Using A Bacterial Co-Culture And Cycling Flush System, Wanying Yao, Sue E. Nokes
First Proof Of Concept Of Sustainable Metabolite Production From High Solids Fermentation Of Lignocellulosic Biomass Using A Bacterial Co-Culture And Cycling Flush System, Wanying Yao, Sue E. Nokes
Biosystems and Agricultural Engineering Faculty Publications
To improve the lignocellulose conversion for ABE in high solids fermentation, this study explored the feasibility of cycling the process through the cellulolytic or/and solventogenic phases via intermittent flushing of the fermentation media. Five different flushing strategies (varying medium ingredients, inoculum supplement and cycling through phases) were investigated. Flushing regularly throughout the cellulolytic phase is necessary because re-incubation at 65 °C significantly improved glucose availability by at least 6-fold. The solvents accumulation was increased by 4-fold using corn stover (3-fold using miscanthus) over that produced by flushing only through the solventogenic phase. In addition, cycling process was simplified by re-incubating …
Kentucky Forage Spokesperson Contest, Kentucky Forage And Grassland Council
Kentucky Forage Spokesperson Contest, Kentucky Forage And Grassland Council
Kentucky Grazing Conference
No abstract provided.
Can I Afford To Spray For Weeds?, Scott Flynn
Can I Afford To Spray For Weeds?, Scott Flynn
Kentucky Grazing Conference
A common question among managers of grazing operations is “At what level of weed pressure does it become economical to apply herbicides on pastures?” Unfortunately there isn’t just one answer to this question as production goals and practices differ between operations and even within an operation over time. Regardless, the real question being ask is if weed control will increase profit per acre.
Grazing Options For Fall And Winter, Edward N. Ballard
Grazing Options For Fall And Winter, Edward N. Ballard
Kentucky Grazing Conference
Feed costs represent the major cost in most livestock production systems. A recently completed analysis of 225 Standardized Performance Analysis (SPA) Beef Cow Records on herds in Illinois and Iowa showed that feed cost was the overriding factor determining profitability, explaining over 57 percent of the herd-to-herd variation.
Summer Grazing Options, S. Ray Smith, Krista Lea
Summer Grazing Options, S. Ray Smith, Krista Lea
Kentucky Grazing Conference
During the last 15 years there have been several new forage species that have emerged as useful in grazing systems and many new varieties have been released of traditional species. There are many sources of information on summer grazing options. We especially encourage you to read the publication written by Dr. Garry Lacefield and colleagues, “Extending Grazing and Reducing Stored Feed Needs” (AGR-199, www.uky.edu/Ag/Forage/agr199.pdf). I have used information from this publication and other publications from the University of Kentucky Forage Website (www.uky.edu/Ag/Forage) in writing this article.
Technical Service Provider: What Is It And Why Is It Important To You?, Bill Payne
Technical Service Provider: What Is It And Why Is It Important To You?, Bill Payne
Kentucky Grazing Conference
Progressive graziers and forage managers are continually looking to improve their operations’ productivity. The opportunity exists to have a Grazing Management Plan developed for your operation at little or no cost to you. By contacting your county NRCS office, you can apply to have this plan developed by a Technical Service Provider, an independent professional certified by NRCS.
Forage Legumes: Their Importance And Management In Profitable Livestock Systems, Ben M. Goff
Forage Legumes: Their Importance And Management In Profitable Livestock Systems, Ben M. Goff
Kentucky Grazing Conference
The landscape of most Kentucky operations is heavily dominated by the utilization of cool-season grasses as the primary source of forage for livestock. However, legumes species, such alfalfa and red or white clovers are an essential component to a complete forage-livestock system. Relative to grasses alone, incorporating legumes into a mixture has the benefits of improving the nutritive value of the available forage in the field, extending the grazing season by increasing the yield of forage during the early summer months, and providing a more economical source of N compared to commercial fertilizers. This paper will briefly describe each of …
Maximizing Stocker Gains On Pastures, Jeff Lehmkuhler
Maximizing Stocker Gains On Pastures, Jeff Lehmkuhler
Kentucky Grazing Conference
Stocker enterprises by definition utilize pasture forages to add weight to light weight feeder cattle. These operations add value to calves by assimilating small groups of calves and combining them into larger uniform packages. Stocker operators also enhance quality through livestock husbandry practices that “upgrade” feeders which could include castrating bulls, dehorning, improving immunity and other attributes. In an effort to optimize profit margins, stocker operators must manage feeders to ensure high rates of gain while finding a balance in stocking rates that provide adequate gains per acre.
Grazing Method: Tool Or Toolbox?, Garry D. Lacefield
Grazing Method: Tool Or Toolbox?, Garry D. Lacefield
Kentucky Grazing Conference
This conference makes the 15th consecutive year we have devoted a full day to Grazing. Kentucky is a great state for grazing animals since we have a relatively long pasture season, can grow many forage grasses and legumes and a long tradition of producing quality animal products from quality pasture. We have tremendous potential to improve our overall grazing efficiency and the discussion throughout the day will address many of the practical strategies for improvements.
Foreword And Kfgc Award Winners [2014], Garry D. Lacefield, Christi L. Forsythe
Foreword And Kfgc Award Winners [2014], Garry D. Lacefield, Christi L. Forsythe
Kentucky Grazing Conference
No abstract provided.
Warming Reduces Tall Fescue Abundance But Stimulates Toxic Alkaloid Concentrations In Transition Zone Pastures Of The U.S., Rebecca L. Mcculley, Lowell P. Bush, Anna E. Carlisle, Huihua Ji, Jim A. Nelson
Warming Reduces Tall Fescue Abundance But Stimulates Toxic Alkaloid Concentrations In Transition Zone Pastures Of The U.S., Rebecca L. Mcculley, Lowell P. Bush, Anna E. Carlisle, Huihua Ji, Jim A. Nelson
Plant and Soil Sciences Faculty Publications
Tall fescue pastures cover extensive acreage in the eastern half of the United States and contribute to important ecosystem services, including the provisioning of forage for grazing livestock. Yet little is known concerning how these pastures will respond to climate change. Tall fescue's ability to persist and provide forage under a warmer and wetter environment, as is predicted for much of this region as a result of climate change, will likely depend on a symbiotic relationship the plant can form with the fungal endophyte, Epichloë coenophiala. While this symbiosis can confer environmental stress tolerance to the plant, the endophyte …
Function-On-Scalar Regression For Genetic Association Studies, Olga A. Vsevolozhskaya, Dmitri V. Zaykin, Qing Lu
Function-On-Scalar Regression For Genetic Association Studies, Olga A. Vsevolozhskaya, Dmitri V. Zaykin, Qing Lu
Olga A. Vsevolozhskaya
We propose a general framework to perform gene/region based analysis of sequencing data by regressing a functional response on one or multiple scalar predictors. Next generation sequencing technologies make it possible to uncover genetic information from millions of variants. Since the observed sequenced variants are very close in their genetic positions, we can consider them to be realizations of random continuous functions. Therefore, instead of analyzing multiple individual genetic variants per subject, we can estimate the underlying continuous function and treat it as a functional response in a regression model. Smoothing splines are used to fit these functional responses by …
Penalized Functional Regression For Next-Generation Sequencing Studies, Olga A. Vsevolozhskaya
Penalized Functional Regression For Next-Generation Sequencing Studies, Olga A. Vsevolozhskaya
Olga A. Vsevolozhskaya
Advances in next-generation sequencing (NGS) technologies make it possible to examining nearly every variant on the human genome. Because of the high density of variants, genotypes within a genetic region can be thought of as a finite sample realization of some underlying stochastic process. The aim of vast majority of NSG studies is to explore an association between a set of genetic variants and qualitative/quantitative traits. To address this aim, we propose a general framework based on functional dependent variable and univariate covariates. We fit our model using penalized least squares criterion. We note that within this framework, the spline …
Self-Reported Head Injury And Risk Of Late-Life Impairment And Ad Pathology In An Ad Center Cohort, Erin L. Abner, Peter T. Nelson, Frederick A. Schmitt, Steven R. Browning, David W. Fardo, Lijie Wan, Gregory A. Jicha, Gregory E. Cooper, Charles D. Smith, Allison M. Caban-Holt, Linda J. Van Eldik, Richard J. Kryscio
Self-Reported Head Injury And Risk Of Late-Life Impairment And Ad Pathology In An Ad Center Cohort, Erin L. Abner, Peter T. Nelson, Frederick A. Schmitt, Steven R. Browning, David W. Fardo, Lijie Wan, Gregory A. Jicha, Gregory E. Cooper, Charles D. Smith, Allison M. Caban-Holt, Linda J. Van Eldik, Richard J. Kryscio
Sanders-Brown Center on Aging Faculty Publications
Aims: To evaluate the relationship between self-reported head injury and cognitive impairment, dementia, mortality, and Alzheimer's disease (AD)-type pathological changes. Methods: Clinical and neuropathological data from participants enrolled in a longitudinal study of aging and cognition (n = 649) were analyzed to assess the chronic effects of self-reported head injury. Results: The effect of self-reported head injury on the clinical state depended on the age at assessment: for a 1-year increase in age, the OR for the transition to clinical mild cognitive impairment (MCI) at the next visit for participants with a history of head injury was 1.21 and 1.34 …
Poster Session, Kentucky Water Resources Research Institute, University Of Kentucky
Poster Session, Kentucky Water Resources Research Institute, University Of Kentucky
Kentucky Water Resources Annual Symposium
- Grading a Watershed? Patrick Creager, Eastern Kentucky University, Richmond, KY
- Permeability Heterogeneity and Its Effects on Hyporheic Zone Exchange, Timothy Pryshlak and Audrey Sawyer, Department of Earth and Environmental Sciences, University of Kentucky, Lexington, KY
- Effects of Atrazine on the Chemical Alarm Cue Response in Longear Sunfish (Lepomis megalottis), Ben M. Adams and Ben F. Brammell, Natural Sciences Department, Asbury University, Wilmore, KY
- New Features Available on the Kentucky Groundwater Data Repository, Bart Davidson and others, Kentucky Geological Survey, University of Kentucky, Lexington, KY
- Removal of Persistent Organic Pollutants from Contaminated Water Sources Utilizing Polyphenol- Functionalized Magnetic …
Session 2c, Kentucky Water Resources Research Institute, University Of Kentucky
Session 2c, Kentucky Water Resources Research Institute, University Of Kentucky
Kentucky Water Resources Annual Symposium
- Results of the Statewide Groundwater Pathogen Study, Susan L. Mallette, Kentucky Division of Water, Frankfort, KY
- Changes in Nutrients and E. coli During Two Storm Events in Hinkston Creek, KY, Tiffany Hunter and Brian Reeder, Institute for Regional Analysis and Public Policy, Morehead State University, Morehead, KY
- Engaging Partners in the Cane Run Watershed, Carol Hanley and others, College of Agriculture, Food and Environment, University of Kentucky, Lexington, KY
- The University of Kentucky Environmental Research and Training Lab is Available for Your Use, Tricia Coakley, Environmental Research Training Lab, University of Kentucky, Lexington, KY
Session 2b, Kentucky Water Resources Research Institute, University Of Kentucky
Session 2b, Kentucky Water Resources Research Institute, University Of Kentucky
Kentucky Water Resources Annual Symposium
- Watershed-Scale Stable Isotope Simulation of the Fluvial Organic Carbon Budget Using the ISOFLOC Model, William Ford and Jimmy Fox, Department of Civil Engineering, University of Kentucky, Lexington, KY
- Time Average Velocity Characteristics of Decelerating Open Channel Flows, Robert Stewart and Jimmy Fox, Department of Civil Engineering, University of Kentucky, Lexington, KY
- Spatiotemporal Relevance of Soil Moisture's Interaction with Measured Soil-Terrain Parameters, Carla Landrum and others, Lexington, KY
- Transport of Agricultural Contaminants through a Karst Soil, Carl Bolster and others, Food Animal Environmental Research Unit, USDA-ARS, Bowling Green, KY
Session 2a: Panel Discussion: Developing Post-Incident Risk Communication Guidelines For Intentional Water Contamination Events, Chike Anyaegbunam, Charles B. Madinger, Pamela Cupp, Shari R. Veil, Timothy L. Sellnow, Anna Goodman Hoover
Session 2a: Panel Discussion: Developing Post-Incident Risk Communication Guidelines For Intentional Water Contamination Events, Chike Anyaegbunam, Charles B. Madinger, Pamela Cupp, Shari R. Veil, Timothy L. Sellnow, Anna Goodman Hoover
Kentucky Water Resources Annual Symposium
This panel will discuss emerging findings from a US EPA-funded research project intended to improve risk communication for post-incident decontamination and clearance activities associated with intentional contamination of a water system. The session will center around Phase II of the study, which focuses on extending the Phase I case study findings that were presented at last year’s KWRRI Symposium, to identify ways in which disparate stakeholder groups in metropolitan areas differentially perceive risk and subsequent risk communication efforts.
Session 1c, Kentucky Water Resources Research Institute, University Of Kentucky
Session 1c, Kentucky Water Resources Research Institute, University Of Kentucky
Kentucky Water Resources Annual Symposium
- Curry's Fork Watershed Plan: Data Pondering, Engaging Expert Advice, Cleaner Water Plans, Carolyn Cromer and others, Oldham County Fiscal Court, LaGrange, KY
- Overall Stream Function, Hydraulically and Ecologically (Opportunity Meets Necessity), Wanda Lawson and Oakes Routt, Stantec Consulting Services Inc., Louisville, KY
- Improving Urban Stream Water Quality through Stream Restoration at Montessori Middle School of Kentucky (MMSK), Pre-Restoration Water Quality and Bank Erosion Monitoring, Eric Dawalt and Arthur Parola, EcoGro/Ridgewater and the Stream Institute at the University of Louisville
- Improving Urban Stream Water Quality through Stream Restoration at Montessori Middle School of Kentucky (MMSK), Design and Construction …
Session 1b, Kentucky Water Resources Research Institute, University Of Kentucky
Session 1b, Kentucky Water Resources Research Institute, University Of Kentucky
Kentucky Water Resources Annual Symposium
- Improving Karst Sinkhole Mapping in Kentucky Using LiDAR, Junfeng Zhu and others, Kentucky Geological Survey, University of Kentucky, Lexington, KY
- "Dividing Ridges" in Light of LiDAR: A Closer Look at Some of Kentucky's Watershed Boundaries, Demetrio Zourarakis, Kentucky Division of Geographic Information, Frankfort, KY
- Horse Park Karst Water Instrumentation System (KWIS) Monitoring Station, Jim Currens and others, Kentucky Geological Survey, University of Kentucky, KY
- Formation Water Chemistry of Cambrian-Ordovician Knox Group Strata, KGS-Hansen Aggregates No. 1 Well, Carter County, Kentucky, T. M. Parris and others, Kentucky Geological Survey, University of Kentucky, Lexington, KY
Session 1a, Kentucky Water Resources Research Institute, University Of Kentucky
Session 1a, Kentucky Water Resources Research Institute, University Of Kentucky
Kentucky Water Resources Annual Symposium
- Water Quality Studies in the Kentucky Coalfields: The Trend Station Program, Richard J. Wahrer, Kentucky Department for Natural Resources, Frankfort, KY
- Water Quality Studies in the Kentucky Coalfields: A Closer Look at Pigeonroost Fork, Martin County, KY, Richard J. Wahrer, Kentucky Department for Natural Resources, Frankfort, KY
- Water Quality Monitoring of the McConnell Springs Stormwater Quality Wetland Pond and Gainesway Pond Retrofit Project, 2010-2013, David Price and Susan Pluegar, Lexington-Fayette County Government, Division of Water Quality, Lexington, KY
- Water Quality Monitoring of McConnell Springs, Lexington, KY, David Price, Lexington-Fayette County Government, Division of Water Quality, Lexington, …
Plenary Session, Kentucky Water Resources Research Institute, University Of Kentucky
Plenary Session, Kentucky Water Resources Research Institute, University Of Kentucky
Kentucky Water Resources Annual Symposium
- Using Microbial-Source Tracking to Investigate Sources of Fecal Contamination in the South Fork Little River Basin, Hopkinsville, Kentucky, Angie Crain and Mac Cherry, USGS Kentucky Water Science Center, Louisville, KY
- Application of Nitrogen and Oxygen Isotopes in Tracing Nitrate Sources in the South Fork Little River Basin, Hopkinsville, Kentucky, Angie Crain and Mac Cherry, USGS Kentucky Water Science Center, Louisville, KY
- Kentucky StreamStats Water-Resources Web Application: Enhancements and Implementation of Selected Low- and Mean-Flow Estimating Equations, Gary Martin, USGS Kentucky Water Science Center, Louisville, KY
- Kentucky Division of Water's Risk Communication Toolbox, Annemarie Cason and Kristen …
Proceedings Of 2014 Kentucky Water Resources Annual Symposium, Kentucky Water Resources Research Institute, University Of Kentucky
Proceedings Of 2014 Kentucky Water Resources Annual Symposium, Kentucky Water Resources Research Institute, University Of Kentucky
Kentucky Water Resources Annual Symposium
This symposium was planned and conducted as a part of the state water resources research institute annual program that is supported by Grant/Cooperative Agreement Number G11AP20081 from the United States Geological Survey. The contents of this proceedings document and the views and conclusions presented at the symposium are solely the responsibility of the individual authors and presenters and do not necessarily represent the official views of the USGS or of the symposium organizers and sponsors. This publication is produced with the understanding that the United States Government is authorized to reproduce and distribute reprints for government purposes.
Photo Highlights From The 34th Kentucky Alfalfa Conference, Kentucky Alfalfa Conference
Photo Highlights From The 34th Kentucky Alfalfa Conference, Kentucky Alfalfa Conference
Kentucky Alfalfa and Stored Forage Conference
No abstract provided.
Adjustments And Maintenance Of Haying Equipments, Clayton Geralds, John Mccoy, Cris Scudder
Adjustments And Maintenance Of Haying Equipments, Clayton Geralds, John Mccoy, Cris Scudder
Kentucky Alfalfa and Stored Forage Conference
No abstract provided.
Advances In Alfalfa Promotion, Bill Talley
Advances In Alfalfa Promotion, Bill Talley
Kentucky Alfalfa and Stored Forage Conference
Kentucky grain farmers have experienced several successful years seeing high prices and good yields, with the exception of the drought in 2012. If you were insured in 2012, which most lenders required, you probably also came out with a profit during that challenging time. Alfalfa producers in Kentucky have also seen high prices and decent yields. While the drought of 2012 affected them, most still harvested an 80 % crop with extremely high prices and demand. The fact that alfalfa is a deep rooted plant, coupled with timely rains proved beneficial to this group.
Why Aren't Big Square Balers Used More In Kentucky?, Tom Keene
Why Aren't Big Square Balers Used More In Kentucky?, Tom Keene
Kentucky Alfalfa and Stored Forage Conference
The history of making hay dates back for centuries and centuries. When mankind began to grow crops and livestock rather than being nomadic, they had to have some type of forage to feed their livestock during the cold and winter months. Since that time there has been a slow and steady progression from harvesting material by hand to today’s modern hay making equipment that maximizes time, labor, fuel, etc. However some countries to this day still use the methods that are thousands of years old when it comes to hay making.
Alfalfa For Summer Grazing, Roy Burris, Garry D. Lacefield
Alfalfa For Summer Grazing, Roy Burris, Garry D. Lacefield
Kentucky Alfalfa and Stored Forage Conference
Alfalfa is most commonly used as a hay crop in the United States. However, with proper management, it can be utilized as a grazing crop with very good results. Liveweight gains per acre are quite high for grazing beef cattle with total season grains of 500 to 800 pounds per acre being reasonable. The authors realized 732 lb/acre of gains on 16 acres of alfalfa in 1991, with beef steers at Princeton.
Lessons Learned In Australia--Uk Forages Study Tour, Traci Missun, S. Ray Smith, Garry D. Lacefield
Lessons Learned In Australia--Uk Forages Study Tour, Traci Missun, S. Ray Smith, Garry D. Lacefield
Kentucky Alfalfa and Stored Forage Conference
In September 2013, twenty Kentuckians traveled to Australia to tour farms and attend the International Grasslands Congress. The group included ten county agents, five farmers, four UK faculty/staff and a teacher. This study tour allowed participants to gain a new perspective of agriculture and how Australian farmers deal with adversity. Farmers there face many challenges each year with change in precipitation, ranging from severe drought to flooding. These challenges have forced them to incorporate different methods to be successful, including intensive grazing, use of overhead and drip irrigation for pasture and hay production, and fallow farming.
Alfalfa Baleage/Silage Preservatives: Do They Work? Are They Economical?, S. Ray Smith
Alfalfa Baleage/Silage Preservatives: Do They Work? Are They Economical?, S. Ray Smith
Kentucky Alfalfa and Stored Forage Conference
There are many variables with silage production including - type of silage operation (silo, bunk, tube, or wrapped bale), weather, packing or bale density, speed of covering. Therefore, no two silage crops are ever the same, which is why researchers are reluctant to give blanket statements regarding when and how to use silage inoculants. There has been a lot of good research though in recent years about the effect of silage inoculants under various management and conditions. What follows is an overview of this research and some general recommendations. Much of this overview was taken from a very good fact …