Digital Commons Network^™

Production Of Aflatoxin On Damaged Corn Under Controlled Environmental Conditions, D. M. Wieman, G. M. White, Joseph L. Taraba, I. J. Ross, Clair L. Hicks, Bruce E. Langlois

Biosystems and Agricultural Engineering Faculty Publications

Aflatoxin B₁ production by Aspergillus flavus (NRRL 6432) was determined on physically damaged corn stored at 35,25 and 20°C and at relative humidities of 97 and 92%. Production at lower relative humidities of 80 and 85% were also tested at 25°C. Production lag times were significantly different for all test conditions. Lag times ranged from 46 h at 97% relative humidity and 35°C to 173. 8 h at 20°C and 92% relative humidity. Aflatoxin B, concentration doubled every 6 to 10 hours after a level of 10 ppb had been reached. Production rate constants were not significantly different between …

Effect Of Soil Water Stress And Irrigation On Growth, Yield And Quality Of Burley Tobacco, Ronald E. Phillips, J. E. Leggett

Soil Science News and Views

An experiment was conducted for a period of three years, 1982, 1983 and 1984, in order to evaluate the effects of soil water stress and irrigation on growth, yield and quality of burley tobacco at Spindletop Farm, Lexington. The variety KY 21 was grown all three years. Three treatments were used in the experiment: (1) check, rainfall only, not irrigated, (2) well watered, rainfall plus supplemental irrigation, and (3) water stressed beginning 50 days after transplanting. The soil of treatment 3 was covered with black plastic to prevent rainfall from entering the soil.

Abatement Of Nitrate Pollution In Groundwater And Surface Runoff From Cropland Using Legume Cover Crops With No-Till Corn, M. Scott Smith, Jac J. Varco

KWRRI Research Reports

Agricultural practices can have a significant impact on water quality. The effects of leguminous winter cover crops on leaching of NO^-₃; from soil have been investigated in this project. Legume cover crops, by fixation of atmospheric N, can reduce the amount of fertilizer N required to produce summer grain crops. The methods initially used to evaluate cover crop effects on No; transport included suction probe lysimeters and measurement of NO^-₃; in soil samples collected to a depth of 90 cm. These measurements demonstrated extreme spatial variability in NO^-₃; distribution and water …

Computer-Assisted Instruction In Academic Libraries, Robert A. Aken, Laura Olson

Library Faculty and Staff Publications

The implementation of a computer-assisted instruction package to supplement college-level bibliographic instruction is described. An outline of goals and objectives for an introductory package and a sample segment explain the technique for creating software locally, allowing for custom design. The use of sample materials permits student-tool interaction in a realistic exercise while also taking advantage of the computer's capabilities. Using locally available hardware with librarian-created text allows for subject-specific lecture presentations, elimination of repetition, and immediate instructional feedback. Results from use of materials by almost 2000 students are summarized.

[Review Of] Thomas Middleton: An Annotated Bibliography, Robert A. Aken

Library Faculty and Staff Publications

No abstract provided.

Contributors [V. 6, No. 2]

The Kentucky Review

No abstract provided.

Wild Sports Of The West, John Clubbe

The Kentucky Review

No abstract provided.

Spanish Archival Documents In Special Collections At The Margaret I. King Library, John Lihani

The Kentucky Review

No abstract provided.

Thomas S. Noble: "Made For A Painter" [Part Ii], James D. Birchfield

The Kentucky Review

No abstract provided.

Traffic Forecasting For Pavement Design, Harshad R. Desai, Rick Reel, Robert C. Deen, Herbert F. Southgate, Ronald Noble, Vernon L. Tabery, Mark Hallenbeck, Dennis Crimmins, Wiley Cunagin

Kentucky Transportation Center Research Report

The need for improved traffic estimation procedures has been emphasized by several studies that demonstrated that previously available data were not adequate. Some data were not considered representative of actual traffic conditions because of overloaded trucks avoiding weighing scales and insufficient traffic sampling programs. In addition, previous forecasting procedures did not reflect the increases in legal load limits, the significant increase in the number of heavy trucks, or the shift toward larger vehicle types that has occurred in recent years.

Improved estimates of current traffic loadings based on larger samples of much higher quality data would allow development of procedures …

Performance Monitoring Of A Highway Tieback Wall (I 71, Carroll County, Ky 227, Corrective Landslide Measure), Bobby W. Meade, David L. Allen, Tommy C. Hopkins

Kentucky Transportation Center Research Report

A tieback wall was used to control an earth slide on KY 227 in Carroll County. Herein is contained a description of the wall construction and problems encountered during construction. Also included are descriptions of materials used and wall components.

The short-term wall performance indicates the tieback wall has controlled the earth slide and, to date, is a satisfactory solution. Long-term monitoring of the tieback wall will continue.

Economic Analyses Of Millings, Herbert F. Southgate

Kentucky Transportation Center Research Report

Economic analyses were made using 1984 and 1985 contract bid data. Data were identified as to who retained ownership. Recommendations as to who retains ownership are made based upon factors prevalent for a specific candidate pavement and other circumstances.

In-The-Row Subsoiling Of Tobacco, Lloyd W. Murdock, George Everette, Ted Howard, Bill Green, Richard Barnhisel

Agronomy Notes

Tobacco is probably more adversely affected by soil compaction than, the other crops grown in Kentucky. ThIs Is due to the characteristIcs of the plant and the unusual cultural practIces under which it is grown.

Soil compaction increases soil density while reducing pore space and root penetration. The reduced pore space reduces the aeration of the soil, which reduces tobacco growth especially during wet periods. The effects of soil compaction on tobacco are due to both impedance of root growth and lack of aeration.

Radiation Pressure And Emission Clouds Around Active Galactic Nuclei, Moshe Elitzur, Gary J. Ferland

Physics and Astronomy Faculty Publications

Detailed calculations of the contribution of the trapped line photons to the overall pressure in line-emitting regions around active galactic nuclei are presented. They lead to the conclusion that radiation pressure is a significant factor in determining the stability of these clouds.

Evaluation Of Snowplowable Marker Installations, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

The first large-scale contracts for the installation of snowplowable markers were awarded in 1984 and 1985. Stimsonite 96 and recessed markers were installed. The objective of this study was to evaluate the performance of the installations. Durability and reflectivity results show that both the recessed markers and Stimsonite 96 markers have performed effectively as snowplowable markers. The recessed markers should continue to be used only on four-lane highways constructed to high geometric standards with the Stimsonite 96 markers installed on the majority of highways.

Soil Erosion With Different Tillage And Cropping Systems, Monroe Rasnake, Wilbur Frye, David C. Ditsch, Robert L. Blevins

Soil Science News and Views

Corn and soybeans are produced on approximately three million acres of Kentucky farmland each year. L 1ttle soil loss occurs when these crops are grown on nearly level or gently sloping land. However, much of the grain production is on sloping land that is cultivated every year and often excessive soil erosion occurs. If a field is allowed to erode excessively for several years, the soil usually becomes less productive. Soil removed in runoff may pollute lakes and streams or cover highly productive soil with low quality sediments.

Letter To Margarette Dye Regarding Seaall Breakfast Meeting, May 29, 1986, Richard Danner

Correspondence

A letter from Richard Danner to Margarette Dye providing details on the SEAALL breakfast meeting.

Letter To Christine Richards Regarding Seaall Membership, May 29, 1986, Margarette Dye

Correspondence

A letter from Margarette Dye to Christine Richards providing information on becoming a SEAALL member.

Note To Margarette Dye Regarding Seaall Mailing Labels, May 20, 1986, Diana Osbaldiston

Correspondence

A note from Diana Osbaldiston to Margarette Dye providing a correction to Osbaldiston's name on SEAALL mailing labels.

Letter To Margarette Dye Regarding Advertising In The Southeastern Law Librarian, May 14, 1986, Hazel Johnson

Correspondence

A letter from Hazel Johnson to Margarette Dye enclosing a check received for advertising in the Southeastern Law Librarian.

College Of Law Commencement Program, 1986, University Of Kentucky

Graduation Programs

No abstract provided.

Thickness Design Curves For Asphaltic Concrete On A 4-Inch Layer Of Dense-Graded Aggregate, Or On 6, 9, Or 12 Inches Of Stabilized Soil, Or For Maximum Utilization Of Dense-Graded Aggregate, Herbert F. Southgate

Kentucky Transportation Center Research Report

No abstract provided.

1986 Update Of Agronomic And Animal Performance Of Different Tall Fescue Varieties, Paul B. Burrus Ii, Robert C. Buckner, James A. Boling, Lowell P. Bush, N. Gay, R. W. Hemken, Garry D. Lacefield, J. Kenneth Evans, M. R. Siegel

Agronomy Notes

The objective of the tall fescue breeding program at the University of Kentucky is the development of varieties characterized by superior nutritive value (including reduced levels of perloline and loline alkaloids), minimal infestation of the fungal endophyte, Acremonium coenophialum), higher palatability, improved disease resistance, and wider adaptation through the derivation of intergeneric and interspecific hybrids of ryegrass and tall fescue species. Kentucky 31, Kenwell, and Kenhy were varieties released from this breeding program. Johnstone tall fescue, developed cooperatively by the Kentucky Agricultural Experiment Station and USDA-ARS, is the most recently released variety. It is characterized as having low levels of …

Evaluation Of Durable Lane Delineation Materials, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

The objective of the study was to evaluate the cost-effectiveness of available marking materials by means of field tests and to make recommendations concerning the optimum lane delineation materials based on these tests. Materials tested include 100-percent solid epoxy paint, polyester paint, extruded thermoplastic, 3M Stamark tape, 3M Bisymmetric tape, EPOFLEX, solvent epoxy paint, chlorinated rubber traffic paint, and alkyd traffic paint. The test installations have been in place up to four years. The evaluation concerned the durability, reflectivity, and appearance of the materials. Based on current data, expanded use is warranted for 1) polyester paint on lower-volume asphaltic concrete …

Evaluation Of Durable Crosswalk And Stopbar Marking Materials, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

The objective of this study was to find the most cost-effective durable marking material to provide long-lasting stop bars and crossbars. Three materials were tested: 1) 3M Stamark tape, 2) Prismo preformed tape, and 3) extruded thermoplastic (hydrocarbon and alkyd). The various test installations were in place for between 6 and 30 months.

The alkyd-resin thermoplastic material was found to be the most cost-effective I material. The preformed tapes cost two to three times as much as the thermoplastic material while not providing as durable a material when used in this application.The alkyd-resin material maintained its appearance better than the …

Synthesis Of Research On The Effects Of Mastery Learning In Elementary And Secondary Classrooms, Thomas R. Guskey, Sally L. Gates

Educational, School, and Counseling Psychology Faculty Publications

The results of well-designed studies show extremely positive student learning outcomes and teacher variables. More studies are needed on several questions, including long-term consequences and effects on classroom interactions and climate.

Comparison Of Four Infiltration Models In Characterizing Infiltration Through Surface Mine Profiles, Larry G. Wells, A. D. Ward, I. D. Moore, R. E. Phillips

Biosystems and Agricultural Engineering Faculty Publications

A laboratory infiltrometer system was used to evaluate the infiltration process through reconstructed surface mine profiles. Six different profiles were subjected to constant simulated rainfall intensities for selected test conditions. Surface runoff rates were monitored and transient soil moisture contents in the profiles were measured with a gamma density gauge. Unsaturated hydraulic conductivity relationships were determined using Campbelfs method and the "zero-flux" procedure. The infiltration process was modeled by the SCS curve number method, a form of Holtan's equation, the Green-Ampt model and Richards' equation. SCS curve numbers were determined by fitting the method to the observed results. Richards' equation …

Letter To Claire Engel Regarding Seaall Annual Meeting, April 29, 1986, Hazel Johnson

Correspondence

A letter from Hazel Johnson to Claire Engel discussing Engel's comments at a SEAALL Annual Meeting and asking Engel to let Johnson know of any potential program ideas Engel may have.

Letter To Carol Billings Regarding The Maintenance Of The Seaall Membership List, April 22, 1986, Hazel Johnson

Correspondence

A letter from Hazel Johnson to Carol Billings regarding the logistics of better maintaining the SEAALL membership list.

Pesticidal Diphenylaziridines, Pankaja K. Kadaba, Douglas Lee Dahlman

Pharmaceutical Sciences Faculty Patents

Substituted 1,2-diphenylaziridines, particularly those which are substituted by halogen, are useful as pesticidal compositions. . . .

To read the remainder of this abstract, please download this patent.