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Full-Text Articles in Life Sciences

Crystal Structure Of Zymonic Acid And A Redetermination Of Its Precursor, Pyruvic Acid, Dominik Heger, Alexis J. Eugene, Sean R. Parkin, Marcelo I. Guzman Jun 2019

Crystal Structure Of Zymonic Acid And A Redetermination Of Its Precursor, Pyruvic Acid, Dominik Heger, Alexis J. Eugene, Sean R. Parkin, Marcelo I. Guzman

Chemistry Faculty Publications

The structure of zymonic acid (systematic name: 4-hy­droxy-2-methyl-5-oxo-2,5-di­hydro­furan-2-carb­oxy­lic acid), C6H6O5, which had previously eluded crystallographic determination, is presented here for the first time. It forms by intra­molecular condensation of parapyruvic acid, which is the product of aldol condensation of pyruvic acid. A redetermination of the crystal structure of pyruvic acid (systematic name: 2-oxo­propanoic acid), C3H4O3, at low temperature (90 K) and with increased precision, is also presented [for the previous structure, see: Harata et al. (1977). Acta Cryst. B33, 210–212 ...


Forage News [2019-06], University Of Kentucky Department Of Plant And Soil Sciences Jun 2019

Forage News [2019-05], University Of Kentucky Department Of Plant And Soil Sciences May 2019

Bacterially Expressed Dsrna Causes Gene Silencing In Eab, Lynne Rieske-Kinney Apr 2019

Bacterially Expressed Dsrna Causes Gene Silencing In Eab, Lynne Rieske-Kinney

Entomology Research Data

RNA interference (RNAi) is a naturally occurring, biological process in which RNA molecules inhibit gene expression or translation by neutralizing target mRNA molecules. Recent advances in our understanding of the RNAi mechanism have allowed its development as an emerging tool to protect against insect pests. The major challenge for efficient pest management using RNAi as a molecular bio-pesticide in the field is development of convenient and efficient methods for production, and practical delivery of stable dsRNAs to the target insect. Our goal is to assess the potential for deploying bacterially produced RNAi as a bio-pesticide against an invasive forest pest ...


Surface-Controlled Dissolution Rates: A Case Study Of Nanoceria In Carboxylic Acid Solutions, Eric A. Grulke, Matthew J. Beck, Robert A. Yokel, Jason M. Unrine, Uschi M. Graham, Matthew L. Hancock Apr 2019

Surface-Controlled Dissolution Rates: A Case Study Of Nanoceria In Carboxylic Acid Solutions, Eric A. Grulke, Matthew J. Beck, Robert A. Yokel, Jason M. Unrine, Uschi M. Graham, Matthew L. Hancock

Chemical and Materials Engineering Faculty Publications

Nanoparticle dissolution in local milieu can affect their ecotoxicity and therapeutic applications. For example, carboxylic acid release from plant roots can solubilize nanoceria in the rhizosphere, affecting cerium uptake in plants. Nanoparticle dispersions were dialyzed against ten carboxylic acid solutions for up to 30 weeks; the membrane passed cerium-ligand complexes but not nanoceria. Dispersion and solution samples were analyzed for cerium by inductively coupled plasma mass spectrometry (ICP-MS). Particle size and shape distributions were measured by transmission electron microscopy (TEM). Nanoceria dissolved in all carboxylic acid solutions, leading to cascades of progressively smaller nanoparticles and producing soluble products. The dissolution ...


Forage News [2019-04], University Of Kentucky Department Of Plant And Soil Sciences Apr 2019

Session 3b: Pollutant Removal, Kentucky Water Resources Research Institute, University Of Kentucky Mar 2019

Session 3b: Pollutant Removal, Kentucky Water Resources Research Institute, University Of Kentucky

Kentucky Water Resources Annual Symposium

  • Investigation of PlarClean and Gamma-Valerolactone as Solvents for Polysulfone Membrane Fabrication
  • Selenium Removal Using Bacteria Entrapped Alginate Gel Beads in a Packed-Bed Reactor
  • Nanotechnology and Membranes: Water detoxification from Lab Scale to Real Site Applications


Session 3a: Drinking Water, Kentucky Water Resources Research Institute, University Of Kentucky Mar 2019

Session 3a: Drinking Water, Kentucky Water Resources Research Institute, University Of Kentucky

Kentucky Water Resources Annual Symposium

  • Evaluating Potential Health Threats from Untreated Karst Springs as Community Drinking Water Sources, Monroe County, Kentucky
  • Benefits of Energy Savings Performance Contracting for Water and Wastewater Treatment Facilities
  • Self-Cleaning Nanocomposite Membranes with Phosphorene-Based Pore Fillers for Water Treatment


Poster Session 2, Kentucky Water Resources Research Institute, University Of Kentucky Mar 2019

Poster Session 2, Kentucky Water Resources Research Institute, University Of Kentucky

Kentucky Water Resources Annual Symposium

  • 2.1 Climate Change Impacts on Sediment Transport in a Lowland Watershed System: Controlling Processes and Projection
  • 2.2 Assessment of MRSA Presence in Suburban WWTPs Effluent and Receiving Streams in Lexington, Kentucky
  • 2.3 Heavy Metal Capture and Detection Using Colored Synthetic Dithiol
  • 2.4 Quantifying Nutrient Fate and Transport in Karst Agroecosystems of Central Kentucky: Application of High-Resolution Sensors, Numerical Modeling, and Isotope Tracers
  • 2.5 Magnetic Nanocomposite Materials for the Detection and Removal of Halogenated Organic Pollutants in Contaminated Water Sources
  • 2.6 Measuring and Modeling Morphologic Processes in Karst to Sustain Water Resources in the Future ...


Session 2a: Ecology, Biology, And Climate, Kentucky Water Resources Research Institute, University Of Kentucky Mar 2019

Session 2a: Ecology, Biology, And Climate, Kentucky Water Resources Research Institute, University Of Kentucky

Kentucky Water Resources Annual Symposium

  • Ecological Monitoring of WRP Easements in Western Kentucky
  • Discussion of Factors Influencing Ecosystem Productivity in the Greenup Pool of the Ohio River
  • Biotic Interactions Between a Bloom-Forming Cyanobacteria and a Planktonic Protist: Implications for Toxin Production
  • The Use of Multiple Large and Detailed Databases to Evaluate the Impacts of Climate Change on Water Resources in the Ohio River Basin
  • Evaluating and Addressing Climate Awareness and Water in Kentucky


Session 2b: Groundwater And Karst, Kentucky Water Resources Research Institute, University Of Kentucky Mar 2019

Session 2b: Groundwater And Karst, Kentucky Water Resources Research Institute, University Of Kentucky

Kentucky Water Resources Annual Symposium

  • Incorporating Machine Learning with LiDAR for Delineating Sinkholes
  • Advances in Urban Karst Hydrological and Contaminant Monitoring Techniques for Real-Time and High-Resolution Applications
  • Finding the Edge: How Can We Apply Edge of Field Monitoring to Karst?
  • An Urban Karst Groundwater Evaluation and Monitoring Toolbox
  • Center-Pivot Irrigation in Western Kentucky: Adding Context to the Discussion


Session 1a: Nutrients And Sediment, Kentucky Water Resources Research Institute, University Of Kentucky Mar 2019

Session 1a: Nutrients And Sediment, Kentucky Water Resources Research Institute, University Of Kentucky

Kentucky Water Resources Annual Symposium

  • Nutrient Concentrations, Loads, and Yields at Ambient Water Quality Monitoring Stations
  • Advancement in Watershed and Sediment Transport Modeling Using Dynamic Lateral, Longitudinal, and Vertical Sediment (Dis)connectivity Prediction
  • Canine Nutrient Contributions to the Urban Environment
  • Continuous Nutrient and Turbidity Sensors Reveal the Response of Watershed Sources Connected During Storm Events


Session 1b: Ecological Restoration, Kentucky Water Resources Research Institute, University Of Kentucky Mar 2019

Session 1b: Ecological Restoration, Kentucky Water Resources Research Institute, University Of Kentucky

Kentucky Water Resources Annual Symposium

  • The Restoration of Cane Run Creek through Lexington’s Coldstream Park and UK’s Coldstream Research Campus
  • Using Multiple Methods for Better Stream Restoration: Including 2-Dimensional Modeling
  • An Ongoing Success Story: What Data, Persistence, and Patience has Enabled in the Hanging Fork Watershed
  • Reclaiming Mill Creek: A Case Study in Urban Stream Restoration


Poster Session 1, Kentucky Water Resources Research Institute, University Of Kentucky Mar 2019

Poster Session 1, Kentucky Water Resources Research Institute, University Of Kentucky

Kentucky Water Resources Annual Symposium

  • 1.1 Evaluating Soil Characteristics in Rural and Urban Areas
  • 1.2 Use of eDNA in Detection of Multiple Salamander Species in Eastern Kentucky Streams
  • 1.3 Evaluation of biomass and filtration method on eDNA detection of fantail darters (Etheostoma flabellare)
  • 1.4 The Impact of Agricultural Development on Nutrient Contamination Hotspots Within a Small, Intermittent Watershed at EKU’s Meadowbrook Farm, Madison County, Kentucky
  • 1.5 How Does Drought Length Impact the Runoff and Nutrient Storm Response in an Agricultural, Intermittent Catchment in Central Kentucky?
  • 1.6 Analyzing Sanitary Sewer Overflow Sensitivity to Storm Characteristics
  • 1.7 Evaluating Soil ...


Plenary Session, Kentucky Water Resources Research Institute, University Of Kentucky Mar 2019

Plenary Session, Kentucky Water Resources Research Institute, University Of Kentucky

Kentucky Water Resources Annual Symposium

No abstract provided.


Proceedings Of 2019 Kentucky Water Resources Annual Symposium, Kentucky Water Resources Research Institute, University Of Kentucky Mar 2019

Proceedings Of 2019 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 G16AP00055 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. Mention of ...


Forage News [2019-03], University Of Kentucky Department Of Plant And Soil Sciences Mar 2019

Predation On Stink Bugs (Hemiptera: Pentatomidae) In Cotton And Soybean Agroecosystems [Predator Gut Contents], Kacie J. Athey, John R. Ruberson, Dawn Olson, James D. Harwood Feb 2019

Predation On Stink Bugs (Hemiptera: Pentatomidae) In Cotton And Soybean Agroecosystems [Predator Gut Contents], Kacie J. Athey, John R. Ruberson, Dawn Olson, James D. Harwood

Entomology Research Data

Stink bugs (Hemiptera: Pentatomidae) are significant pests of cotton and soybeans in the southeastern United States with annual control costs exceeding $14 million in these crops. Three of the most prominent stink bug pests are the southern green (Nezara viridula), brown (Euschistus servus) and green (Chinavia hilaris) stink bugs. To determine trophic linkages between generalist arthropod predators and these pests, species-specific 16S molecular markers were designed and used to detect the presence of prey DNA in predator gut-contents. Over 2700 predators were collected over two growing seasons in cotton and soybean in southern Georgia in 2011 and 2012 and screened ...


Predation On Stink Bugs (Hemiptera: Pentatomidae) In Cotton And Soybean Agroecosystems [Predator Capture Numbers], Kacie J. Athey, John R. Ruberson, Dawn Olson, James D. Harwood Feb 2019

Predation On Stink Bugs (Hemiptera: Pentatomidae) In Cotton And Soybean Agroecosystems [Predator Capture Numbers], Kacie J. Athey, John R. Ruberson, Dawn Olson, James D. Harwood

Entomology Research Data

Stink bugs (Hemiptera: Pentatomidae) are significant pests of cotton and soybeans in the southeastern United States with annual control costs exceeding $14 million in these crops. Three of the most prominent stink bug pests are the southern green (Nezara viridula), brown (Euschistus servus) and green (Chinavia hilaris) stink bugs. To determine trophic linkages between generalist arthropod predators and these pests, species-specific 16S molecular markers were designed and used to detect the presence of prey DNA in predator gut-contents. Over 2700 predators were collected over two growing seasons in cotton and soybean in southern Georgia in 2011 and 2012 and screened ...


Forage News [2019-02], University Of Kentucky Department Of Plant And Soil Sciences Feb 2019

Upcoming Events [2019], Christopher D. Teutsch, Christi L. Forsythe, Rehanon Pampell Jan 2019

Upcoming Events [2019], Christopher D. Teutsch, Christi L. Forsythe, Rehanon Pampell

Forage Symposium at the Kentucky Cattlemen’s Convention

No abstract provided.


Uk Research Spotlight [2019], Christopher D. Teutsch, Christi L. Forsythe, Rehanon Pampell Jan 2019

Uk Research Spotlight [2019], Christopher D. Teutsch, Christi L. Forsythe, Rehanon Pampell

Forage Symposium at the Kentucky Cattlemen’s Convention

  • Simplifying Grain Drill Calibration J.M. Buckman, H. Adams, and C.D. Teutsch
  • Performance of Stockers Grazing Diverse Summer Annual Forage Mixtures K.M. Mercier, C.D. Teutsch, S.R. Smith, E.L. Ritchey, K.H. Burdine, and E.S. Vanzant
  • Nitrogen Application on Diverse Summer Annual Forage Mixtures K.M. Mercier, C.D. Teutsch, S.R. Smith, E.L. Ritchey, K.H. Burdine, and E.S. Vanzant
  • Cultivar X Aphicide Interactions C.D. Teutsch, R.T. Villanueva, Z.J. Vilora, G.L Olson, and S.R. Smith
  • Using Summer Annuals to Transform Forage Systems in Western Kentucky H. Adams ...


Grazing Myths That Impact Profitability [Slides], Gregory S. Halich Jan 2019

Grazing Myths That Impact Profitability [Slides], Gregory S. Halich

Forage Symposium at the Kentucky Cattlemen’s Convention

No abstract provided.


Grazing Myths That Reduce Profitability, Gregory S. Halich Jan 2019

Grazing Myths That Reduce Profitability, Gregory S. Halich

Forage Symposium at the Kentucky Cattlemen’s Convention

Many cattle farms have moved to rotational grazing in the past decade, and there are significant benefits associated with this grazing technique. However, one thing that I have noticed is that costs are not always accounted for when it comes to recommended rotational grazing practices. If you ignore costs, partially or fully, you will invariably do too much of whatever you are considering. In this light, I will highlight four grazing recommendations (myths) that many folks are often taking to extremes related to rotational grazing, and one additional myth (generic to grazing style) that is reducing the overall profitability of ...


Economics Of Grazing Cover Crops, Edward N. Ballard Jan 2019

Economics Of Grazing Cover Crops, Edward N. Ballard

Forage Symposium at the Kentucky Cattlemen’s Convention

Feed costs represent the major cost in most livestock production systems. A 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.


Estimating Pasture Forage Mass From Pasture Height, Ed Rayburn, John Lozier Jan 2019

Estimating Pasture Forage Mass From Pasture Height, Ed Rayburn, John Lozier

Forage Symposium at the Kentucky Cattlemen’s Convention

How do you decide when to move animals to new pasture? How long can they feed on a pasture before they should be moved again? The short answer is, "It depends." It depends on the number and size of animals, pasture size, production goals, available alternative pastures, and the forage mass present in the pasture. In order to practice pasture budgeting, you need an estimate of forage mass measured as pounds of forage dry matter/acre.


A Falling Plate Meter For Estimating Pasture Forage Mass, Ed Rayburn, John Lozier Jan 2019

A Falling Plate Meter For Estimating Pasture Forage Mass, Ed Rayburn, John Lozier

Forage Symposium at the Kentucky Cattlemen’s Convention

It is often helpful to have a reliable estimate of forage on offer to grazing livestock. Research has shown that there is a high correlation between forage height and dry matter yield. This correlation is improved when bulk height is determined by depressing the forage with a weighted plate. This weight plate technique referred to as a weighted disk meter, appears to improve the estimate of pasture yield. Different designs of weighted disk meters are called rising plate meters and falling plate meters depending on how measurements are taken. The weighted disk meter described here is a falling plate meter ...


Profitability At Eldon Farms: Guiding Principles, John Genho Jan 2019

Profitability At Eldon Farms: Guiding Principles, John Genho

Forage Symposium at the Kentucky Cattlemen’s Convention

Eldon Farms is a 7,000-acre farm in the Northern Piedmont of Virginia. Over the past 15 years, we have adopted a grazing program based on three principles. While the specifics of each operation are different, I believe these principles can be applied across a host of situations.


2018 Long-Term Summary Of Kentucky Forage Variety Trials, Gene L. Olson, S. Ray Smith, Jimmy C. Henning, Christopher D. Teutsch Jan 2019

2018 Long-Term Summary Of Kentucky Forage Variety Trials, Gene L. Olson, S. Ray Smith, Jimmy C. Henning, Christopher D. Teutsch

Forage Symposium at the Kentucky Cattlemen’s Convention

Forage crops occupy approximately 7 million acres in Kentucky. Forages provide a majority of the nutrition for beef, dairy, horse, goat, sheep, and wildlife in the state. In addition, forage crops play an environmentally friendly role in soil conservation, water quality, and air quality. There are over 60 forage species adapted to the climate and soil conditions of Kentucky. Only 10 to 12 of these species occupy the majority of the acreage, but within these species there is a tremendous variation in varieties.

This publication was developed to provide a user-friendly guide to choosing the best variety for producers based ...


Forages At Kca Foreword [2019], Christopher D. Teutsch, Christi L. Forsythe, Rehanon Pampell Jan 2019

Forages At Kca Foreword [2019], Christopher D. Teutsch, Christi L. Forsythe, Rehanon Pampell

Forage Symposium at the Kentucky Cattlemen’s Convention

No abstract provided.