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Articles 16951 - 16980 of 17270
Full-Text Articles in Entire DC Network
Enteric Virus Survival In Package Plants And The Upgrading Of The Small Treatment Plants Using Ozone, Lois S. Cronholm, James R. Mccammon, Marvin Fleischman, Jerry R. Perrich, Valerie Reisser, William Harris, Ronald R. Vanstockum, Khosrow Jaberizadeh, Michael J. Wahl
Enteric Virus Survival In Package Plants And The Upgrading Of The Small Treatment Plants Using Ozone, Lois S. Cronholm, James R. Mccammon, Marvin Fleischman, Jerry R. Perrich, Valerie Reisser, William Harris, Ronald R. Vanstockum, Khosrow Jaberizadeh, Michael J. Wahl
KWRRI Research Reports
Post-chlorinated effluent collected with a portable viral concentrator from four treatment plants in Jefferson County, Kentucky, yielded infective viral particles from three plants from spring through late fall. The pH, ,chlorine, turbidity, and coliform levels of these effluents indicated that viral persistence was correlated with inefficient processing which produced effluent environments that inhibited disinfection by chlorine. The disinfection potential of ozone was tested on secondary effluent and finished water seeded with poliovirus and Esaheriahia coli. Low doses of ozone inactivated viruses and bacteria in treated water, but not in effluent. The inactivation of bacteria by ozone does not appear …
Dams And People: Geographic Impact Area Analysis, Vance E. Arnett, Sue Johnson
Dams And People: Geographic Impact Area Analysis, Vance E. Arnett, Sue Johnson
KWRRI Research Reports
This report attempts to determine the efficacy of using geographic impact areas as analytical sub-groups for the assessment of the impact of multi-purpose reservoir projects on target communities. The impact areas utilized are: the take area; the below-the-dam area; the urban area; and, the adjacent area. Each area is described in detail and each is analyzed for differences in knowledge, previous experience, and perception of impact on community and family.
Data for this study originated from structured and open-ended interviews in Johnson County, Kentucky. Information was collected during two field efforts, the first in February, 1974, the second in August …
Statistical Models For Precipitation, Z. Govindarajulu, Peter Purdue, Frank Cioch
Statistical Models For Precipitation, Z. Govindarajulu, Peter Purdue, Frank Cioch
KWRRI Research Reports
The available data consists of daily rainfall for the past 24 years (1948-1972) for Lexington, Louisville and Paducah. However, for Ashland, the data is available for the period of 40 years (1932-1972). The problem is to find an appropriate family of distributions indexed by a suitable number of parameters that fits the maximum daily rainfall. Further, there might be seasonal variations. The following seasons were considered: (i) Dry Convective season: August 1-0ctober 30; (ii) Early Convective season: May 1-July 31; (iii) Late Convective season: November 1- April 30. After extracting the yearly maximums for each of these seasons (see Appendix …
Legal Institutions For The Allocation Of Water And Their Impact On Coal Conversion Operations In Kentucky, Richard C. Ausness, Gary W. Callahan, Steven W. Dills, Bill H. Flynn, John S. Gillig
Legal Institutions For The Allocation Of Water And Their Impact On Coal Conversion Operations In Kentucky, Richard C. Ausness, Gary W. Callahan, Steven W. Dills, Bill H. Flynn, John S. Gillig
KWRRI Research Reports
The conversion of coal into other types of fuel through gasification and liquefaction has been proposed as a means of coping with America's increasing energy needs. Coal conversion plants require large quantities of water for cooling purposes and for use as a raw material.
There are three types of water allocation presently used in the United States, riparianism, prior appropriation, and administrative permit systems. The common law riparian system is undesirable because under it water rights are insecure and subject to locational use restrictions. Prior appropriation is better, but the permanent water right created under this system results in excessive …
Kentucky Research: A Flexible Pavement Design And Management System, Herbert F. Southgate, Robert C. Deen, James H. Havens, William B. Drake
Kentucky Research: A Flexible Pavement Design And Management System, Herbert F. Southgate, Robert C. Deen, James H. Havens, William B. Drake
Kentucky Transportation Center Research Report
Various strategies for designing pavement structures are discussed. Initial full-life design, stage designs and planned extensions of service life, final design, surface renewals for deslicking, no-defect designs for high-type high-volume facilities, and allowable-defect designs are considered. Economics enter in terms of salvage value of existing pavements and alternate designs using different proportions of materials within the structure.
The elastic model represented in Chevron's n-layered computer program is the basis for theoretical relationships. Ranges of values are given for input variables such as Young's moduli, Poisson's ratio, thicknesses for layers, tire pressure, and load. The Kentucky CBR is related to modulus …
Hydrodynamic Separation Of Solids From Solid-Liquid Mixtures, Harry J. Sterling Jr., Don J. Wood
Hydrodynamic Separation Of Solids From Solid-Liquid Mixtures, Harry J. Sterling Jr., Don J. Wood
KWRRI Research Reports
Several schemes for separating solid pollutants from water flowing in a closed conduit were examined. Separation based on the momentum differential between the solids and liquids and the centrifugal movement of a conveying liquid were both examined under turbulent flow conditions. The study indicated these processes to have limited applications, primarily due to the difficulties in withdrawing a significant fraction of separated flow and the deleterious effects of turbulent mixing. However, utilization of the differential momentum of solid particles and water when flowing laminarly through a pipe was found to be a viable separation scheme. Significant experimental separations (greater than …
College Of Law Commencement Program, 1976, University Of Kentucky
College Of Law Commencement Program, 1976, University Of Kentucky
Graduation Programs
No abstract provided.
Some Of The Effects Of Domestic Sewage Discharged Into Hickman And Jessamine Creeks In Jessamine County, Kentucky, Henry H. Howell, Mike W. Jones, Robert A. Kuehne
Some Of The Effects Of Domestic Sewage Discharged Into Hickman And Jessamine Creeks In Jessamine County, Kentucky, Henry H. Howell, Mike W. Jones, Robert A. Kuehne
KWRRI Research Reports
A 6-week study was made in the summer of 1971 as an initial effort to determine the extent of pollution that the three sewage disposal plants in Jessamine County, Kentucky, are contributing to its streams. With the rapid population increase in Lexington and nearby municipalities, this study should furnish a basis of comparison for future investigations. Eighteen collecting stations were established in riffle areas of Hickman and Jessamine Creeks, and coliform bacteria, macro-invertebrate populations, fish populations and chemical water quality of each riffle area were studied.
Hickman Creek's flow was augmented by approximately 3,100,000 gallons/day (11,735 -m3/day) from …
A Soils Data System For Kentucky, Dwight Spradling
A Soils Data System For Kentucky, Dwight Spradling
Kentucky Transportation Center Research Report
This report discusses the development of a computerized soils data system which facilitates collection, centralized storage, and retrieval of soils data developed by engineers and scientists for projects in Kentucky. Without such a system, much soils data are essentially lost after each project is completed. This system will provide data that can conveniently be used for developing preliminary sources of information for site investigation, for preparing regional soil maps, for land use planning, and for studying new and existing empirical relationships involving soil properties and characteristics.
Various types of data systems, the design of the system to include software and …
Energy V. Environment: Who Wins In Race For Coal In Kentucky, Marilyn S. Daniel, Douglas W. Becker, Carla J. Allen, Richard V. Murphy, Marjorie J. Reeder, Ronald G. Robey, Susan W. Wanat
Energy V. Environment: Who Wins In Race For Coal In Kentucky, Marilyn S. Daniel, Douglas W. Becker, Carla J. Allen, Richard V. Murphy, Marjorie J. Reeder, Ronald G. Robey, Susan W. Wanat
Kentucky Law Journal
No abstract provided.
Sensitivity Of Vertebrate Embryos To Heavy Metals As A Criterion Of Water Quality: Phase Iii: Use Of Fish And Amphibian Eggs As Bioindicator Organisms For Evaluating Water Quality, Wesley J. Birge, Albert G. Westerman, Jeffrey A. Black
Sensitivity Of Vertebrate Embryos To Heavy Metals As A Criterion Of Water Quality: Phase Iii: Use Of Fish And Amphibian Eggs As Bioindicator Organisms For Evaluating Water Quality, Wesley J. Birge, Albert G. Westerman, Jeffrey A. Black
KWRRI Research Reports
Fish and amphibian eggs, embryos and early posthatched (larval) stages were evaluated as bioindicator organisms with which to monitor the quality of natural water resources. Eggs of 9 species were cultured in water collected from each of 11 Inner Bluegrass rivers and streams. The latter were chosen to represent water sources varying in quality from extremely poor to good. Selection was based on the sources and magnitude of pollution, and the diversity and density of piscine populations. Cultures were maintained in vitro, using 12-hour changes of water.
Averaging data for all 9 animal species, egg hatchability (embryonic survival) ranged …
Supply And Demand In Water Planning: Streamflow Estimation And Conservational Water Pricing, D. I. Carey, C. T. Haan
Supply And Demand In Water Planning: Streamflow Estimation And Conservational Water Pricing, D. I. Carey, C. T. Haan
KWRRI Research Reports
Recent studies indicated the need for development of surface water supplies in Kentucky. Rising resource costs make economically efficient reservoir designs increasingly important. This study was undertaken to provide methods in water supply reservoir design that increase system benefits.
Two major factors influencing reservoir design were studied: estimated future streamflow into the reservoir and demands placed on the reservoir. Standard reservoir sizing methods rely on historical streamflow data. This data is frequently limited and uncertainty in required storage estimates may result. To assess the reliability of a design, the use of mathematical models in simulation studies was proposed. Existing stochastic …
Computer Layout And Design Of Grain Storage Facilities, Otto J. Loewer Jr., Thomas C. Bridges, Douglas G. Overhults
Computer Layout And Design Of Grain Storage Facilities, Otto J. Loewer Jr., Thomas C. Bridges, Douglas G. Overhults
Biosystems and Agricultural Engineering Faculty Publications
No abstract provided.
Facility Costs Of Centralized Grain Storage Systems Utilizing Computer Design, Otto J. Loewer Jr., Thomas C. Bridges, Douglas G. Overhults
Facility Costs Of Centralized Grain Storage Systems Utilizing Computer Design, Otto J. Loewer Jr., Thomas C. Bridges, Douglas G. Overhults
Biosystems and Agricultural Engineering Faculty Publications
The item considered most often when estimating the cost of a grain storage facility is capacity. Of equal or greater importance is daily harvest rate. Other important considerations include drying method, materials handling equipment, energy cost, facility arrangement, labor requirements, grain quality and management ability. Only through a comparison of facilities which offer similar capacity, capability and convenience can the purchaser obtain his best system.
Upward Water Movement In Field Cores, Larry G. Wells, R. W. Skaggs
Upward Water Movement In Field Cores, Larry G. Wells, R. W. Skaggs
Biosystems and Agricultural Engineering Faculty Publications
No abstract provided.
Analysis Of The Sediment Filtering Action Of Grassed Media, Billy J. Barfield, David T. Y. Kao, E. W. Tollner
Analysis Of The Sediment Filtering Action Of Grassed Media, Billy J. Barfield, David T. Y. Kao, E. W. Tollner
KWRRI Research Reports
The movement of sediment in non-submerged flow through a rigid grass media was studied experimentally by simulating the media with cylindrical nails. Models of sediment movement were developed from probablistic reasoning and from the use of existing parameters describing total bed material in open channel flow. In the probability analysis, the percent sediment trapped was found to be a power function of the number of potential fall paths, Nf,a particle could make from the surface to the bed while traveling through the filter media. The percent trapped was also found to be an inverse power function of the …
Tertiary Treatment Of Wastewater Using Oxidation Ponds, Robert A. Lauderdale, John R. Moeller, Raymond D. Hamilton
Tertiary Treatment Of Wastewater Using Oxidation Ponds, Robert A. Lauderdale, John R. Moeller, Raymond D. Hamilton
KWRRI Research Reports
The purpose of the project was to determine the value of using lagoons as a supplemental process for treating the effluent from an activated sludge wastewater treatment plant.
Only tentative conclusions can be suggested since the project was not carried to completion. It appears that lagoons will have only minimal effect on the amounts of total nitrogen and phosphate in the plant effluent, although conversion of a portion of the ammonia to nitrate can be expected. However, the concentration of ammonia was never lower than that required by EPA guidelines. Some reduction of soluble BOD appears to occur, perhaps through …
Rural Residential Water Demand In Kentucky: An Econometric And Simulation Analysis, Orlen C. Grunewald, C. T. Haan, David L. Debertin, D. I. Carey
Rural Residential Water Demand In Kentucky: An Econometric And Simulation Analysis, Orlen C. Grunewald, C. T. Haan, David L. Debertin, D. I. Carey
KWRRI Research Reports
This study proposed that demand management through pricing policies can be used in conjunction with supply management to solve water supply problems in Kentucky. Economic principles were shown to apply to rural residential water use. From the economic model, a hyperbolic demand function was theorized. The mathematical form of this function used quantity of water as a function of price, income, value of residence, evaporation, and persons per residence. This function was estimated using ordinary least squares regression. A log-linear model was found to be a satisfactory representation of the demand function. Price was the only independent variable which was …
Response Of Saturated Sands To Cyclic Shear At Earthquake Amplitudes, Vincent P. Drnevich, John P. Jent
Response Of Saturated Sands To Cyclic Shear At Earthquake Amplitudes, Vincent P. Drnevich, John P. Jent
KWRRI Research Reports
Both quasi-static and resonant cyclic shear tests were performed on hollow cylindrical specimens of saturated sands at various densities and confining stresses. Shear moduli measured at nondestructive amplitudes were shown to be independent of frequency for the range of 0.1Hz to 50Hz. Application of cyclic shear at larger amplitudes caused effective stresses to decrease and failure. The number of cycles to failure was related to ratio of cyclic shear stress to maximum drained shear stress. Effective confining stress reduces approximately linearly with number of cycles. Shear modulus and shear damping.can be described by the Hardin-Drnevich equations if change in effective …
The Law Of Water Allocation In Kentucky, Richard C. Ausness, Bill H. Flynn
The Law Of Water Allocation In Kentucky, Richard C. Ausness, Bill H. Flynn
KWRRI Research Reports
This study discusses navigability concepts, consumptive rights to surface and ground waters, the disposal of diffused surface waters and the administration of Kentucky's statutory water allocation system.
Federal regulatory powers are based on navigability as is state ownership of submerged lands. Kentucky uses the ebb-and-flow test of navigability to determine title to submerged lands but uses a navigability-in-fact test to determine the scope of state regulatory authority. Consumptive uses of water in Kentucky are governed by the riparian landowner to use as much water as he needs as long as his use does not interfere with the legitimate uses of …
College Of Law Commencement Program, 1975, University Of Kentucky
College Of Law Commencement Program, 1975, University Of Kentucky
Graduation Programs
No abstract provided.
Evaluation Of Recovery In A Polluted Creek After Installation Of New Sewage Treatment Procedures, Robert A. Kuehne
Evaluation Of Recovery In A Polluted Creek After Installation Of New Sewage Treatment Procedures, Robert A. Kuehne
KWRRI Research Reports
Response of Hickman Creek near Lexington, Kentucky to alleviation from serious sewage pollution was studied from January, 1973 through July, 1974. Wastes are now handled from an efficient secondary treatment facility and four sequential polishing lagoons before chlorination and discharge to West Hickman branch.
Physico-chemical tests gave no strong indication of residual pollution effects at the start of the study, approximately six months after the treatment facility opened. At low flow a slight oxygen sag, probably associated with algal growth in the lagoons, persists downstream from the outfall. Mean values for turbidity, nitrates and COD are somewhat higher at the …
Engineering Data System For Bedrock Occurrences And Properties, D. J. Hagerty, Robert C. Deen, M. W. Palmer, C. D. Tockstein
Engineering Data System For Bedrock Occurrences And Properties, D. J. Hagerty, Robert C. Deen, M. W. Palmer, C. D. Tockstein
Kentucky Transportation Center Research Report
The initial work plan included the development of a classification system based on index tests. An investigation of previous works in classification of rock on the basis of index tests showed that a variety of classification systems utilizing many different index tests had been developed. However, this survey showed that no generally applicable system had been developed and that little communication had been established between field investigators, facility designers, and those in charge of construction and maintenance of facilities. Therefore, the initial plan for work was modified to include the development of a comprehensive methodology for evaluation of rock. The …
Is Section 6861 The Source Of Authority For Short-Year Jeopardy Assessments Under The Internal Revenue Code?, Steven D. Gold
Is Section 6861 The Source Of Authority For Short-Year Jeopardy Assessments Under The Internal Revenue Code?, Steven D. Gold
Kentucky Law Journal
No abstract provided.
Process Control Of Activated Sludge Treatment, Phase Ii, Richard I. Kermode, Robert W. J. Brett, Joseph D. Pault Jr.
Process Control Of Activated Sludge Treatment, Phase Ii, Richard I. Kermode, Robert W. J. Brett, Joseph D. Pault Jr.
KWRRI Research Reports
Material balances on substrate and microorganisms were derived in conjunction with various mixing configurations thought to accurately describe the activated sludge process. These models include the completely mixed with bypass, plug flow, and plug flow with bypass. Two sets of kinetic mechanisms for substrate utilization and bacterial growth were employed.
A feed forward controller was designed from linear approximations of the material balances derived in the completely mixed with bypass mixing model. Utilizing frequency response methods, the controller was found essentially identical to a completely mixed modeled controller developed in a prior investigation.
Through computer simulation the controller's effectiveness was …
Stochastic Simulation Of Daily Rainfall, David M. Allen, C. T. Haan, Don Linton, Jim Street, David Jordan
Stochastic Simulation Of Daily Rainfall, David M. Allen, C. T. Haan, Don Linton, Jim Street, David Jordan
KWRRI Research Reports
The design of many water resources projects requires knowledge of possible long-term rainfall patterns. In this project a stochastic model based on a first order Markov chain was developed to simulate daily rainfall at a point. The model is applicable to any point in Kentucky (and other areas with similar rainfall patterns).
The model in its present form is useful in providing rainfall inputs into hydrologic models for designing water supply facilities and other water resources systems. The model uses historical rainfall data to estimate the Markov transitional probabilities. A separate matrix is estimated for each month of the year. …
Sensitivity Of Vertebrate Embryos To Heavy Metals As A Criterion Of Water Quality, Phase Ii: Bioassay Procedures Using Developmental Stages As Test Organisms, Wesley J. Birge, Albert G. Westerman, Jeffrey A. Black, Oliver W. Roberts
Sensitivity Of Vertebrate Embryos To Heavy Metals As A Criterion Of Water Quality, Phase Ii: Bioassay Procedures Using Developmental Stages As Test Organisms, Wesley J. Birge, Albert G. Westerman, Jeffrey A. Black, Oliver W. Roberts
KWRRI Research Reports
Chick, amphibian, and fish embryos were evaluated as bioassay and bioindicator organisms. Test procedures were developed by which embryonic stages may be used 1) in bioassay systems to evaluate the toxicity of particular metallic or metal-containing trace contaminants, and 20 as bioindicators to monitor the quality of natural water resources.
A bioassay technique was devised in which metallic toxicants were administered to chick embryos by "needle tract" injection into the yolk sac. This provided more uniform distribution of test metals throughout the yolk mass than can be obtained by conventional yolk sac injection methods, and gave more sensitivity and uniformity …
Hydraulic And Flow Studies Related To Sediment Transport, Kentucky River, Kentucky, Bruce R. Moore, Michael R. Short, Thomas Wachs
Hydraulic And Flow Studies Related To Sediment Transport, Kentucky River, Kentucky, Bruce R. Moore, Michael R. Short, Thomas Wachs
KWRRI Research Reports
This study related the conditions of flow and channel shape to distribution of sediment types in the Kentucky River. Seven distinct types of sediment association were delineated and these have a regular pattern of distribution influenced by the presence of navigation locks and dams. The most suitable locations for commercial extraction of bed material were clearly indicated and the variations of sand size delineated by the study. The irregular discharge pattern of the stream indicates potential problems in the disposal of solid waste pollutants.
A remeasurement of the dredge hole in the Ohio River indicated a continuation of the same …
A Study Of Naturally Occurring Algicides Produced By Freshwater Algae, Denny O. Harris, Harry D. Caldwell
A Study Of Naturally Occurring Algicides Produced By Freshwater Algae, Denny O. Harris, Harry D. Caldwell
KWRRI Research Reports
The mode of action of the algicide produced by Pandorina morum was examined by exposing Volvox globator and isolates spinach chloroplasts to a partially purified algicide preparation. Oxygen evolution of Volvox, whole chloroplasts and broken chloroplasts (minus the Calvin cycle),was reduced indicating that the algicide inhibits the light reactions of photosynthesis. Oxygen evolution studies of other Volvocaceae confirmed the observation that Pandorina morum is not significantly influenced by its own inhibitor. Molecular weight approximation by gel filtration established that the inhibitor has a low molecular weight (probably below 100 mw). Field studies indicate that this algicide has tremendous potential as …
Optimal Highway Safety Improvement Investments By Dynamic Programming [Dec. 1974], Jerry G. Pigman, Kenneth R. Agent, Jesse G. Mayes, Charles V. Zegeer
Optimal Highway Safety Improvement Investments By Dynamic Programming [Dec. 1974], Jerry G. Pigman, Kenneth R. Agent, Jesse G. Mayes, Charles V. Zegeer
Kentucky Transportation Center Research Report
The process of determining which projects to implement under a given budget, and which to defer until later, is central to the planning and management of highway systems. With a limited budget for construction, maintenance, and safety improvements, investments which will produce the optimal benefits must be chosen. This is often impossible to accomplish without the aid of a computer because of the complexity of the problem. Dynamic programming has been tested and verified as an efficient method for selecting priority projects to derive maximum benefits. The applicability of dynamic programming to the safety improvement program is demonstrated in this …