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Articles 32761 - 32790 of 39981

Full-Text Articles in Engineering

Partners In Technology, David O. Cox Sep 1993

Partners In Technology, David O. Cox

Kentucky's Annual Forum on Transportation

No abstract provided.


Partners In Intermodalism, David B. Clarke Sep 1993

Partners In Intermodalism, David B. Clarke

Kentucky's Annual Forum on Transportation

No abstract provided.


Partners In Intermodalism, Kirk Harralson Sep 1993

Partners In Intermodalism, Kirk Harralson

Kentucky's Annual Forum on Transportation

No abstract provided.


Highway Economic Development Enabling Plan For Kentucky, Jack Fish Sep 1993

Highway Economic Development Enabling Plan For Kentucky, Jack Fish

Kentucky's Annual Forum on Transportation

No abstract provided.


Partners In Intermodalism, Michael L. Ruehling Sep 1993

Partners In Intermodalism, Michael L. Ruehling

Kentucky's Annual Forum on Transportation

No abstract provided.


The Road Map To Financing: Financial Implications Of Istea, Paul E. Toussaint Sep 1993

The Road Map To Financing: Financial Implications Of Istea, Paul E. Toussaint

Kentucky's Annual Forum on Transportation

No abstract provided.


Partners In Technology, Eddie Bruce Sep 1993

Partners In Technology, Eddie Bruce

Kentucky's Annual Forum on Transportation

No abstract provided.


Luncheon Presentation, Douglas A. Bruce Sep 1993

Luncheon Presentation, Douglas A. Bruce

Kentucky's Annual Forum on Transportation

No abstract provided.


Partners In Intermodalism, Jane F. Garvey Sep 1993

Partners In Intermodalism, Jane F. Garvey

Kentucky's Annual Forum on Transportation

No abstract provided.


Partners In Technology, John A. Clements Sep 1993

Partners In Technology, John A. Clements

Kentucky's Annual Forum on Transportation

No abstract provided.


Partners In Finance, William M. Spreitzer Sep 1993

Partners In Finance, William M. Spreitzer

Kentucky's Annual Forum on Transportation

No abstract provided.


Who Are The Customers?, Francis B. Francois Sep 1993

Who Are The Customers?, Francis B. Francois

Kentucky's Annual Forum on Transportation

No abstract provided.


Kentucky Transportation Hall Of Fame [1993], Kentucky Transportation Center Sep 1993

Kentucky Transportation Hall Of Fame [1993], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Review Of Planning Distribution Model (Pdm) Status And Application Possibilities For The Egyptian Irigation System, Robert W. Hill, Richard C. Peralta, Gary P. Merkley Sep 1993

Review Of Planning Distribution Model (Pdm) Status And Application Possibilities For The Egyptian Irigation System, Robert W. Hill, Richard C. Peralta, Gary P. Merkley

Civil and Environmental Engineering Faculty Publications

The comprehensive water management Planning Distribution Model, or PDM, was developed by the Biological and Irrigation Engineering Department, Utah State University (USU), under contract with the United States Bureau of Reclamation (USBR). Most of the work was carried out in the Planning Sector, Ministry of Public Works and Water Resources (MPWWR) , in Cairo, under the Planning Studies and Models Component of the USAID funded Irrigation Management Systems Project.


Water Quality Modeling Of The Tualitin River, Christopher John Berger Sep 1993

Water Quality Modeling Of The Tualitin River, Christopher John Berger

Dissertations and Theses

Water quality problems related to excessive algal growth, high nutrient loading, and low flows have been occurring along Oregon's Tualatin River. The Tualatin River is 86 miles long and has a drainage basin of 711 square miles. The drainage basin incorporates forest, agricultural, and urban areas. Located in the Portland metropolitan area, these problems have been acerbated by the effects of urban growth. To help analyze pollution control alternatives, a river model study, funded by the Oregon Department of Environmental Quality (DEQ}, was undertaken. An in-stream model of hydraulics and water quality was developed. The Corps of Engineer's CE-QUAL-W2 model, …


Modeling Of Flow And Water Quality In Henry Hagg Lake Near Forest Grove, Oregon, Michael T. Knutson Sep 1993

Modeling Of Flow And Water Quality In Henry Hagg Lake Near Forest Grove, Oregon, Michael T. Knutson

Dissertations and Theses

Increased population growth in Washington County, Oregon, has helped cause the water quality of the Tualatin River to decline. Henry Hagg Lake is a storage reservoir which was built to augment summer low flows in the Tualatin River. Hagg Lake also supplies the Tualatin River Basin with both irrigation and municipal water in the summer. Using the U.S. Army Corps of Engineer's model CE-QUAL-W2 (a two-dimensional hydrodynamic and water quality model) , a model of Henry Hagg Lake was created. The model was calibrated using water quality and hydraulic data for 1990 at the Hagg Lake outflow in Scoggins Creek. …


Vinyl Chloride Biodegradation With Methanotrophic Attached Films, Yarrow M. Nelson, William J. Jewell Sep 1993

Vinyl Chloride Biodegradation With Methanotrophic Attached Films, Yarrow M. Nelson, William J. Jewell

Civil and Environmental Engineering

Methanotrophic degradation of vinyl chloride (VC) is investigated using a laboratory-scale methanotrophic attached-film expanded-bed (MAFEB) bioreactor. This study provides a basis for applying a microbial cometabolizing reaction to practical treatment of toxic chlorinated compounds. The MAFEB reactor was operated at 20°C with influent VC concentrations ranging from 1,800 to 9,600 µg/L and bed hydraulic retention times ranging from 3.7 to 7.6 h. VC effluent concentrations during steady continuous operation ranged from 3 to 140 µg/L, with most values less than 26 µg/L, resulting in removal efficiencies of 96.3% to 99.8%. The maximum continuous-flow VC degradation rate observed at 20°C was …


Summary Of Results Of 1992 Field And Laboratory Evaluations Of Pavement Marking Materials, Kentucky Transportation Center Sep 1993

Summary Of Results Of 1992 Field And Laboratory Evaluations Of Pavement Marking Materials, Kentucky Transportation Center

Kentucky Transportation Center Research Report

This report summarizes the results of data collected as part of the 1992 field and laboratory evaluations of pavement marking materials for the SASHTO Regional Test Facility. The report is divided into two volumes. The first volume presents the field evaluations while the laboratory tests results are given in the second volume. The purpose of the Regional Test Facility (RTF) is to minimize the amount of field and laboratory research testing of specific types of materials. This is accomplished by combining efforts in an organized manner to reduce the monetary and man-hour requirements of both the states and industry. A …


Analysis Of Alcohol And Speed Related Traffic Accidents In Fayette County, Kenneth R. Agent Sep 1993

Analysis Of Alcohol And Speed Related Traffic Accidents In Fayette County, Kenneth R. Agent

Kentucky Transportation Center Research Report

One objective of this study was to update the statistics related to alcohol-related accidents and arrests In Fayette County. The second objective was to include an analysis of speed-related accidents and citations.

The number of alcohol-related accidents in Fayette County has decreased over the past several years. The number of speed-related accidents has remained relatively constant Differences between the characteristics of all accidents and alcohol and speed-related accidents were noted. For example, there were higher percentages of alcohol and speed-related accidents involving a fixed object. Differences in driver characteristics, such as the high percentage of drivers in the 16 to …


1993 Safety Belt Usage Survey And Evaluation Of Effectiveness In Kentucky, Kenneth R. Agent Sep 1993

1993 Safety Belt Usage Survey And Evaluation Of Effectiveness In Kentucky, Kenneth R. Agent

Kentucky Transportation Center Research Report

The objective of the survey was to establish 1993 safety belt and child safety seat usage rates in Kentucky. Data were collected at 100 sites and combined based on vehicle miles travelled for a given type of highway, rural or urban location, and county population category. Also included in this report is an analysis of accident records evaluating the effectiveness of safety belts.

Statewide usage rates were 42 percent for drivers and front-seat passengers (over 19 years of age) and 61 percent for children under four years of age (front and rear seats). Driver usage rates increased in 1993 compared …


Analysis Of Best Management Practices For Storm Water Compliance At Air Force Airfields, Peter A. Ridilla, Bradley T. Hoagland Sep 1993

Analysis Of Best Management Practices For Storm Water Compliance At Air Force Airfields, Peter A. Ridilla, Bradley T. Hoagland

Theses and Dissertations

This research analyzed storm water best management practices (BMPs) that may a Base Civil Engineers/Environmental Managers in complying with National Pollutant Discharge Elimination System (NPDES) storm water discharge requirements for Air Force airfield pavements. As a result of recent storm water regulations issued by the Environmental Protection Agency, increased emphasis has been placed on preventing and controlling the discharge of pollutants into surface waters of the United States. Based on the results of an American Association of Airport Executives' survey of civilian airports, the types and levels of airfield pollutants were identified. Typical NPDES storm water permit standards were then …


Guidance For The Development Of Air Force Storm Water Sampling Programs, Jerry K. Weldon Iii, Roy T. Willis Sep 1993

Guidance For The Development Of Air Force Storm Water Sampling Programs, Jerry K. Weldon Iii, Roy T. Willis

Theses and Dissertations

The purpose of this research was to develop sampling guidance that will enable Air Force (AF) installations to conduct cost effective storm water sampling in accordance with current storm water regulations. Data on the techniques used by AF bases to obtain storm water samples for the AF group storm water permit application were collected and analyzed. This information was used to outline management and resource requirements associated with the implementation of NPDES storm water regulations. The use of in-house personnel, automatic sampling equipment, or a contractor to perform the field data collection was examined. An in-house manual approach to storm …


Analysis Of Traffic Accident Data In Kentucky (1988-1992), Kenneth R. Agent, Jerry G. Pigman Sep 1993

Analysis Of Traffic Accident Data In Kentucky (1988-1992), Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

This report includes an analysis of traffic accident data in Kentucky tor the years of 1988-1992. A primary objective of this study was to determine average accident statistics tor Kentucky highways. Average and critical numbers and rates at accidents were calculated for various types of highways in rural and urban areas. These data can be used in Kentucky's procedure to identify locations that have abnormal rates or numbers of accidents.

Another objective of this study was to provide data which can be used in the preparation of the problem identification portion of Kentucky's Annual Highway Safety Plan. County and city …


Evaluation Of The Lexington-Fayette County Safety Belt Ordinance, Kenneth R. Agent Sep 1993

Evaluation Of The Lexington-Fayette County Safety Belt Ordinance, Kenneth R. Agent

Kentucky Transportation Center Research Report

A mandatory safety belt ordinance was enacted in Fayette County with an effective date of July 1, 1990. One objective of this study was to conduct usage surveys after the ordinance had been in effect for approximately three years. This would allow comparisons to be made of safety belt usage before and immediately after the effective date of the ordinance to that found a substantial time period after enactment of the ordinance. A second objective of the study was to compere accident data before and after the ordinance became effective. The would allow an analysis of the effect the ordinance …


Analytical Modeling Of Aquifer Decontamination By Pulsed Pumping When Contaminant Transport Is Affected By Rate-Limited Sorption And Desorption, Thomas A. Adams, Robert C. Viramontes Sep 1993

Analytical Modeling Of Aquifer Decontamination By Pulsed Pumping When Contaminant Transport Is Affected By Rate-Limited Sorption And Desorption, Thomas A. Adams, Robert C. Viramontes

Theses and Dissertations

This research explores radially convergent contaminated transport in an aquifer towards an extraction well. This thesis presents the equations governing the transport of a contaminant during aquifer remediation by pulsed pumping. Contaminant transport is assumed to be affected by radial advection, dispersion, and sorption/desorption. Sorption is assumed to be either equilibrium or rate-limited, with the rate-limitation described by either a first-order law, or by Fickian diffusion of contaminant through layered, cylindrical, or spherical immobile water regions. The equations are derived using an arbitrary initial distribution of contaminant in both the mobile and immobile regions, and they are analytically solved in …


Capabilities Of Air Force Wastewater Treatment Plants In Complying With Projected Regulatory Requirements, Steven R. Ford Sep 1993

Capabilities Of Air Force Wastewater Treatment Plants In Complying With Projected Regulatory Requirements, Steven R. Ford

Theses and Dissertations

One of the major environmental regulations that directly affects the Air Force is the Federal Water Pollution Control Act (FWPCA). The 1972 FWPCA amendments set forth a series of national goals regarding water quality. The main mechanism for achieving these goals was the National Pollutant Discharge Elimination System (NPDES). NPDES is a program requiring dischargers to limit the quantity of pollutants discharged into the receiving waters. This research effort predicts changes in future NPDES permit requirements, and evaluated the capabilities of Air Force wastewater treatment plants (WWTPs) in meeting those future requirements. It was found that future permit requirements will …


A Predictive Model For The Determination Of The Economic Feasibility Of Construction And Demolition Waste Recycling In The Air Force, Byron L. Dixon Sep 1993

A Predictive Model For The Determination Of The Economic Feasibility Of Construction And Demolition Waste Recycling In The Air Force, Byron L. Dixon

Theses and Dissertations

This study created a model to be used at a CONUS Air Force base to determine the economic feasibility of Construction and Demolition (C&D) waste recycling. Three areas investigated to develop this model: the methods to determine amounts and types of C&D waste generated at a specific location, the markets for recycled C&D wastes, and the recycling methods currently available. From this data, gathered through records searches and interviews, a procedure was developed to perform cost/benefit analyses on the available recycling options. A model was then created based on these calculations which can arm a manager with information to either …


Bs News Sep 1993

Bs News

Building Services Engineering

No abstract provided.


Evaluation Of The Total Petroleum Hydrocarbon Standard For Cleanup Of Petroleum Contaminated Sites, Rick A. Blaisdell, Mark E. Smallwood Sep 1993

Evaluation Of The Total Petroleum Hydrocarbon Standard For Cleanup Of Petroleum Contaminated Sites, Rick A. Blaisdell, Mark E. Smallwood

Theses and Dissertations

This study evaluated the TPH (total petroleum hydrocarbon) cleanup standard for petroleum contaminated soils (PCS). A survey of 13 state regulators was performed to characterize current standards and regulatory viewpoints on the use of a TPH versus a BTEX cleanup standard. The regulatory community considers the BTEX constituents the greatest threat to groundwater, yet expressed concern that the use of a compound specific standard, without an accompanying analysis for TPH, might result in residual soil contamination that may present risk. This study also evaluated the ratio of BTEX TPH in soil over time. Based on JP-4 contaminated site soil data, …


A Decision Support Model Using Life Cycle Cost (Lcc) Analysis To Select Cost-Effective Alternatives For Hazardous Materials, Blaine F. Burley, Kirk A. Phillips Sep 1993

A Decision Support Model Using Life Cycle Cost (Lcc) Analysis To Select Cost-Effective Alternatives For Hazardous Materials, Blaine F. Burley, Kirk A. Phillips

Theses and Dissertations

This research focuses on the development of a decision support model to select cost-effective alternatives for hazardous materials using life cycle cost (LCC) analysis. The model provides an effective decision-making tool to evaluate the economic feasibility of using alternatives for hazardous materials. Given a specific operation, the users of this model can enter site-specific cost data to determine the total LCCs of using baseline hazardous materials (i.e., hazardous materials currently being used in an operation), as well as the total LCCs of using various alternatives. This thesis postulates that the material having the lowest total LCC is considered to be …