Digital Commons Network^™

Organic Dairying: Role Of Grazing, Jake Schmitz

Kentucky Grazing Conference

Certified organic and many conventional dairy farmers are using grazing techniques for a number of reasons, including building better soil, reducing feed costs, improving milk quality, and enhancing herd health. Additionally, certified organic farmers must utilize their pastures because the United States Department of Agriculture’s (USDA) organic rule requires organic cows to graze. Both the farmer and the USDA are working hard to ensure that “organic dairy” is synonymous with “grazing cows,” because the organic consumer vehemently demands dairy products from pasture-grazed livestock.

Impact Of The Endophyte On Animal Production, Glen Aiken

Kentucky Grazing Conference

Tall fescue is productive and well adapted to the soils and climate in a region commonly referred to as the “fescue belt”, which overlays the transition zone between the temperate northeast and subtropical southeast. Persistence of the grass under low input management is attributed to a fungal endophyte that infects most fescue plants and produces alkaloids that impart tolerance to heat, drought, and grazing stresses. Unfortunately, the endophyte also produces ergot alkaloids that can induce toxicosis. Signs of “fescue toxicosis” are elevated body temperature and respiration rate, retention of winter hair coats through the summer months, hormonal imbalances, and reduction …

How Much Pasture Do I Have And How Long Will It Feed My Cows?, S. Ray Smith

Kentucky Grazing Conference

A very common question asked by cattlemen is, “How much pasture do I have and how long will it feed my cows.” The purpose of this paper is to provide some guidelines and tools for answering this question. In pasture systems, determining the amount of pasture is much harder than in grain-based feeding systems because feed may be allocated for more than one day and feed quantity and quality is influenced by weather, fertility, stand density, and season. In addition, not all the available forage is consumed and the plants continue to grow after they are grazed. Variation in quality …

From Confinement To Grazing, Bill Payne

Kentucky Grazing Conference

A Tale of Two Businesses:

I would like share an account of a transition from a conventional dairy operation to our current Management Intensive Grazing (MIG) enterprise. In 1974, I joined my father who had been dairying on a 265 acre farm in Lincoln County, Kentucky for twenty five years. We fed our registered Holsteins corn silage and alfalfa haylage and purchased a manufactured feed. Our herd of 70 Holsteins spent most of their time on concrete. We did make an effort to allow access to an exercise lot when weather permitted. However, during most of the 1990’s we spent …

Foreword And Conference Information [2011], Garry D. Lacefield, Christi L. Forsythe

Kentucky Grazing Conference

No abstract provided.

Modeling Biological Membranes With Circuit Boards And Measuring Electrical Signals In Axons: Student Laboratory Exercises, Martha M. Robinson, Jonathan M. Martin, Harold L. Atwood, Robin L. Cooper

Biology Faculty Publications

This is a demonstration of how electrical models can be used to characterize biological membranes. This exercise also introduces biophysical terminology used in electrophysiology. The same equipment is used in the membrane model as on live preparations. Some properties of an isolated nerve cord are investigated: nerve action potentials, recruitment of neurons, and responsiveness of the nerve cord to environmental factors.

Methods And Compositions For Treating Neurological Disorders, Tae H. Ji, Inhae Ji

Chemistry Faculty Patents

This disclosure relates to methods and compositions useful for the treatment of senile dementia. More particularly the disclosure relates to methods and compositions for the treatment of senile dementia related to diabetes.

Animal Models For Periodontal Disease, Helieh S. Oz, David A. Puleo

Center for Oral Health Research Faculty Publications

Animal models and cell cultures have contributed new knowledge in biological sciences, including periodontology. Although cultured cells can be used to study physiological processes that occur during the pathogenesis of periodontitis, the complex host response fundamentally responsible for this disease cannot be reproduced in vitro. Among the animal kingdom, rodents, rabbits, pigs, dogs, and nonhuman primates have been used to model human periodontitis, each with advantages and disadvantages. Periodontitis commonly has been induced by placing a bacterial plaque retentive ligature in the gingival sulcus around the molar teeth. In addition, alveolar bone loss has been induced by inoculation or …

Determinants Of Multimethod Contraceptive Use In A Sample Of Adolescent Women Diagnosed With Psychological Disorders, Delia L. Lang, Jessica M. Sales, Laura F. Salazar, Ralph J. Diclemente, Richard A. Crosby, Larry K. Brown, Geri R. Donenberg

Health, Behavior & Society Faculty Publications

OBJECTIVE: Despite recommendations for concurrent use of contraceptives and condoms to prevent unintended pregnancy and STIs, multimethod contraceptive use among women is poor. This study examined individual-, interpersonal-, and environmental-level factors that predict multimethod use among sexually active adolescent women diagnosed with psychological disorders.

METHODS: This multisite study analyzed data from 288 sexually active adolescent women who provided sociodemographic, psychosocial, and behavioral data related to birth control and condom use.

RESULTS: 34.7% of the participants reported multimethod use in the past three months. Controlling for empirically and theoretically relevant covariates, a multivariable logistic regression identified self-efficacy, multiple partners, pregnancy history, …

A Profile On First-Generation College Students At The University Of Kentucky: A Focus On Retention Efforts, Matthew Deffendall, Nichole Knutson, David Sacks

Undergraduate Education White Papers

This paper provides an overview of the first-generation college student (FGCS) profile at the University of Kentucky. This paper then compares the FGCS population at the University of Kentucky to the general student population at the university, specifically focusing on levels of degree attainment. In addition, the national literature on FGCS is discussed. Based upon national literature and institutional data, the authors provide practical suggestions on how to best serve FGCS at the University of Kentucky.

Rule Synthesis And Explanatory Synthesis: A Socratic Dialogue Between Ireac And Treat, Michael D. Murray

Law Faculty Scholarly Articles

This Article explores the theory and process of explanatory synthesis in comparison to rule synthesis and case-to-case analogical reasoning as a method of demonstrative legal reasoning and analysis and legal rhetoric. The Article takes the form of a Socratic dialogue to discuss the analytical and rhetorical advantages of explanatory synthesis. Explanatory synthesis provides an important option for inductive reasoning and argumentation within the deductive paradigm of legal analysis, and has rhetorical advantages over other forms of analogical reasoning when examined using the tools of modern argument theory and the rhetorical canons of law and economics.

The Energy Source Of The Filaments Around The Giant Galaxy Ngc 1275, A. C. Fabian, J. S. Sanders, R. J. R. Williams, A. Lazarian, Gary J. Ferland, R. M. Johnstone

Physics and Astronomy Faculty Publications

The brightest galaxy in the nearby Perseus cluster, NGC 1275, is surrounded by a network of filaments. These were first observed through their Hα emission but are now known to have a large molecular component with a total mass approaching 10¹¹ M_⊙ of gas. The filaments are embedded in hot intracluster gas and stretch over 80 kpc. They have an unusually low excitation spectrum which is well modelled by collisional heating and ionization by secondary electrons. Here we note that the surface radiative flux from the outer filaments is close to the energy flux impacting on them from …

Herschel Observations Of The Centaurus Oluster - The Dynamics Of Cold Gas In A Cool Core, R. Mittal, C. P. O'Dea, Gary J. Ferland, J. B. R. Oonk, A. C. Edge, R. E. A. Canning, H. Russell, S. A. Baum, H. Böhringer, F. Combes, M. Donahue, A. C. Fabian, N. A. Hatch, A. Hoffer, R. Johnstone, B. R. Mcnamara, P. Salomé, G. Tremblay

Physics and Astronomy Faculty Publications

Brightest cluster galaxies (BCGs) in the cores of galaxy clusters have distinctly different properties from other low-redshift massive ellipticals. The majority of the BCGs in cool-core clusters show signs of active star formation. We present observations of NGC 4696, the BCG of the Centaurus galaxy cluster, at far-infrared (FIR) wavelengths with theHerschel space telescope. Using the PACS spectrometer, we detect the two strongest coolants of the interstellar medium, [C II] at 157.74 μm and [O I] at 63.18 μm, and in addition [N II] at 121.90 μm. The [C II] emission is extended over a region of 7 kpc …

A Deep Spectroscopic Study Of The Filamentary Nebulosity In Ngc 4696, The Brightest Cluster Galaxy In The Centaurus Cluster, R. E. A. Canning, A. C. Fabian, R. M. Johnstone, J. S. Sanders, C. S. Crawford, Gary J. Ferland, N. A. Hatch

Physics and Astronomy Faculty Publications

We present results of deep integral-field spectroscopy observations using high-resolution optical (4150–7200 Å) VLT VIsible MultiObject Spectrograph spectra of NGC 4696, the dominant galaxy in the Centaurus cluster (Abell 3526). After the Virgo cluster, this is the second nearest (z= 0.0104) example of a cool-core cluster. NGC 4696 is surrounded by a vast, luminous Hα emission-line nebula (L_Hα= 2.2 × 10⁴⁰ erg s⁻¹). We explore the origin and excitation of the emission-line filaments and find their origin consistent with being drawn out, under rising radio bubbles, into the intracluster medium as in …

Compulsory Homosexuality And Black Masculine Performance, Vershawn A. Young

English Faculty Publications

No abstract provided.

Mapped Karst Groundwater Basins In The Somerset 30 X 60 Minute Quadrangle, James C. Currens, Randall L. Paylor, Joseph A. Ray, Robert J. Blair

Map and Chart--KGS

No abstract provided.

Kentucky Water Resources Research Institute Annual Technical Report Fy 2010, Kentucky Water Resources Research Institute, University Of Kentucky

KWRRI Annual Technical Reports (USGS’s 104b Grant Program)

The 2010 Annual Technical Report for Kentucky consolidates reporting requirements for the Section 104(b) base grant award into a single document that includes: 1) a synopsis of each research project that was conducted during the period, 2) citations for related publications, reports, and presentations, 3) a description of information transfer activities, 4) a summary of student support during the reporting period, and 5) notable awards and achievements during the year.

Summary Of Kentucky River Watershed Watch 2011 Water Sampling Results, Kentucky Water Resources Research Institute

Kentucky River Watershed Watch

No abstract provided.

Explanatory Synthesis And Rule Synthesis: A Comparative Civil Law And Common Law Analysis, Michael D. Murray

Law Faculty Scholarly Articles

In comparative study of common law and civilian legal analysis, many scholars have noted a convergence in the two systems' use of precedent cases. Although common law legal theory historically has started from a position that judges are fully competent to create law and change the law through their adjudication of cases and the judicial opinions they write, and civilian theory historically has started from a position that judges are not empowered to create and change the law enacted by the legislature but rather are to read and apply the existing law to new cases, the practice of tribunals within …

Should Histologic Grade Be Incorporated Into The Tnm Classification System For Small (T1, T2) Node-Negative Breast Adenocarcinomas?, Matthew Purdom, Michael L. Cibull, Terry D. Stratton, Luis M. Samayoa, Edward Romond, Patrick C. Mcgrath, Rouzan G. Karabakhtsian

Pathology and Laboratory Medicine Faculty Publications

Prognosis of invasive ductal carcinoma (IDC) strongly correlates with tumor grade as determined by Nottingham combined histologic grade. While reporting grade as low grade/favorable (G1), intermediate grade/moderately favorable (G2), and high grade/unfavorable (G3) is recommended by American Joint Committee on Cancer (AJCC) staging system, existing TNM (Primary Tumor/Regional Lymph Nodes/Distant Metastasis) classification does not directly incorporate these data. For large tumors (T3, T4), significance of histologic grade may be clinically moot as those are nearly always candidates for adjuvant therapy. However, for small (T1, T2) node-negative (N0) tumors, grade may be clinically relevant in influencing treatment decisions, but data on …

Remaining Resources Of The Herrin Coal, Gerald A. Weisenfluh

Map and Chart--KGS

The Herrin coal bed (W. Ky. No. 11) is one of the most important coal resources in the Illinois Basin. To 2009, the Herrin coal had an estimated 10 million tons of production in Kentucky, and remained the second largest producer in the Western Kentucky Coal Field. The Herrin is known for its regionally extensive "blue band" rock parting, and, in Kentucky, its close association with the overlying Providence Limestone Member and Paradise coal (W. Ky. No. 11) (see, for example, Greb and others, 1992). To fact, the Herrin and Paradise coal beds were so closely spaced in some areas …

Depositional And Stratigraphic Significance Of Marine, Green-Clay, Mineral Facies In The Lower-Middle Mississippian Borden And Fort Payne Formations, Western Appalachian And Eastern Illinois Basins, Kentucky, Devi Bhagabati Prasad Udgata

University of Kentucky Doctoral Dissertations

Detailed study of strata associated with the glauconite-rich Floyds Knob Bed in the western Appalachian and eastern Illinois basins have corroborated previous interpretations that the unit is a widespread, largely synchronous marker horizon. However, in some areas there are multiple glauconite beds; in others a distinct bed is lacking, but the glauconite is dispersed throughout many beds, forming an interval rather than a distinct bed. In Kentucky and adjacent states, the Floyds Knob interval, in upper parts of the Lower-Middle Mississippian Borden-Grainger delta sequence and in lower parts of the Fort Payne carbonate sequence, was deposited at the end of …

Universal Binding And Recoil Corrections To Bound State G-Factors, Timothy James Semple Martin

University of Kentucky Doctoral Dissertations

The gyromagnetic ratio of bound particles is an active field of experimental and theoretical research. Early measurements of corrections to the bound g-factor came from experiments involving hydrogen-like ions. As the sensitivity of such experiments has increased, it has become possible to instead use them to measure the electron-ion mass ratio -- but only if the theoretical bound g-factor is known with sufficient precision for these systems. By constructing an effective nonrelativistic Lagrangian, we derive leading order binding and recoil corrections for systems comprised of particles with arbitrary spin.

Lagrangians for spin one-half and spin one-theories are developed, …

Modeling And Quantitative Analysis Of White Matter Fiber Tracts In Diffusion Tensor Imaging, Xuwei Liang

University of Kentucky Doctoral Dissertations

Diffusion tensor imaging (DTI) is a structural magnetic resonance imaging (MRI) technique to record incoherent motion of water molecules and has been used to detect micro structural white matter alterations in clinical studies to explore certain brain disorders. A variety of DTI based techniques for detecting brain disorders and facilitating clinical group analysis have been developed in the past few years. However, there are two crucial issues that have great impacts on the performance of those algorithms. One is that brain neural pathways appear in complicated 3D structures which are inappropriate and inaccurate to be approximated by simple 2D structures, …

Advanced Studies On Series Impedance In Waveguides With An Emphasis On Source And Transfer Impedance, Jinghao Liu

University of Kentucky Doctoral Dissertations

Series impedances, including source and transfer impedances, are commonly used to model a variety of noise sources and noise treatment elements in duct systems. Particle velocity is assumed to be constant on the plane where the series impedances are defined. The research reported herein details investigations into measuring source and transfer impedance. Especially, the measurement and prediction of the transfer impedance of micro-perforated panel (MPP) absorbers is considered.

A wave decomposition method for measuring source impedance and source strength was developed that was purely based on acoustic concepts instead of the equivalent circuit analysis. The method developed is a two-load …

Three Dimensional Modeling And Animation Of Facial Expressions, Alice J. Lin

University of Kentucky Doctoral Dissertations

Facial expression and animation are important aspects of the 3D environment featuring human characters. These animations are frequently used in many kinds of applications and there have been many efforts to increase the realism. Three aspects are still stimulating active research: the detailed subtle facial expressions, the process of rigging a face, and the transfer of an expression from one person to another. This dissertation focuses on the above three aspects.

A system for freely designing and creating detailed, dynamic, and animated facial expressions is developed. The presented pattern functions produce detailed and animated facial expressions. The system produces realistic …

Three Essays Evaluating Choices Of Teachers And Administrators In Kentucky Public Schools, Nathan Barrett

University of Kentucky Doctoral Dissertations

Public K-12 education is a large enterprise in the United States. Through local, state and federal sources, the U.S. allocated over $610 billion to K-12 public education in 2009 (NCES). Not only is the commitment of public funds for education substantial, the provision of K-12 education is primarily administered by the government in non-market settings through local school districts. It is this institutional environment that generates the impetus for evaluating how those in education make choices in the absence of markets.

Like traditional markets, non-market solutions often fail because the incentives facing individuals and agencies elicit choices which produce outcomes …

A Systematic Study Of Thermodynamic And Transport Properties Of Layered 4d And 5d Correlated Electron Systems, Shalinee Chikara

University of Kentucky Doctoral Dissertations

Correlated electron materials have been at the forefront of condensed matter research in the past couple of decades. Correlation in materials, especially, with open d and f electronic shells often lead to very exciting and intriguing phenomenon like high temperature superconductivity, Mott metal-insulator transition, colossal magnetoresistance (CMR). This thesis focuses on triple-layered Sr₄Ru₃O₁₀, Sr substituted double layered (Ca1-- xA_x)₃Ru₂O₇ (A = Ba, Sr) and 5d system Sr₂IrO₄ and Sr₃Ir₂O₇. Triple-layered Sr₄Ru₃O_{10 …}

Periodic Trends In Structure Function Relationship Of Organic Heteroacenes, Marsha Loth Grimminger

University of Kentucky Doctoral Dissertations

Our group has previously shown that small changes to molecular structure result in large changes to device properties and stability in organic electronic applications. By functionalizing aromatic heteroacenes with group 14 and group 16 elements, it is possible to control morphology and improve stability for a variety of applications such as thin film transistors and solar cells. Functionalization within the heteroacene core led to changes in electronic structure as observed by electrochemistry and light absorption. By substituting down the periodic table, the carbon heteroatom bond length increased, leading to subtle changes in crystal packing. Absorption maxima were red-­‐shifted and stability …

Partially Halogenated Acenes And Heteroacenes For Organic Electronics, Balaji Purushothaman

University of Kentucky Doctoral Dissertations

Inorganic materials have dominated electronic applications such as photovoltaic cells, thin film transistors (TFTs) and light emitting diodes (LEDs). However developments in the field of organic electronics over the past three decades have enabled the use of organic materials in these devices. While significant improvements have been made to improve their electronic properties there are several road blocks towards commercial application. One of the significant obstacles is the poor charge carrier mobility associated with organic semiconductors processed by well established printing methods. The goal of my research project is to improve the charge carrier mobility of solution cast films of …