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Articles 1 - 30 of 444
Full-Text Articles in Engineering
The Effect Of Volatile Fission Products On Fuel Motion In Nuclear Fuel Elements, Paul Sasa
The Effect Of Volatile Fission Products On Fuel Motion In Nuclear Fuel Elements, Paul Sasa
Nuclear Engineering ETDs
Stringent licensing procedures for commercial nuclear reactor operation require an in-depth analysis of the phenomena associated with postulated reactor core overheating accidents. One aspect of nuclear reactor safety assessment is a prediction of fuel behavior associated with such postulated overheating events, which includes an assessment of the role of fission product inventory contained within irradiated fuel elements on fuel relocation potential. In general the gaseous fission product, such as Xenon and Krypton, have been considered the most likely candidates for fuel relocation due to gas dissolution from the fuel matrix and bubble expansion during fuel overheating; thus, such gaseous fission …
Bulletin - December, 1978, Civil Aviation Medical Association
Bulletin - December, 1978, Civil Aviation Medical Association
Browse all Civil Aviation Medical Association Newsletters
A six page newsletter of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.
Low-Void Concrete Mixtures, Assaf S. Rahal, James H. Havens
Low-Void Concrete Mixtures, Assaf S. Rahal, James H. Havens
Kentucky Transportation Center Research Report
The purpose of this study was to modify concrete mix-design formulas to supplant all water over and above that needed for hydration with a non-evaporable liquid material and(or) a super-water-reducer or plasticizer -- thus producing a low-void concrete. A water-cement ratio of 0.244 - 0.30 was presumed minimal for hydration of the cement. Several polymeric materials, asphalts, oils, and superplasticizers were used. Success was achieved with two latexes, one epoxy, and several superplasticizers. The use of these materials in concrete resulted in improved strength, reduction of air voids and permeability, and enhancement of resistance to corrosive chloride salts.
The Evaluation Of Corrosion Inhibitors For Controlling Corrosion In Closed Paper Mill White Water Systems, Ifeanyi E. C. Okeke
The Evaluation Of Corrosion Inhibitors For Controlling Corrosion In Closed Paper Mill White Water Systems, Ifeanyi E. C. Okeke
Masters Theses
No abstract provided.
Acuta Enews December 1978, Vol. 7, No. 12
Acuta Enews December 1978, Vol. 7, No. 12
ACUTA Newsletters
In This Issue
PRESIDENT'S MESSAGE
POTPOURRI
1979 ACUTA CONFERENCE ACTIVITIES QUESTIONNAIRE
MOUTH OF THE SOUTH
PARTY LINE
MOTOROLA
Energy Fact Sheet: Residential Solar Heating, Blaine F. Parker, Larry W. Turner
Energy Fact Sheet: Residential Solar Heating, Blaine F. Parker, Larry W. Turner
Agricultural Engineering Energy Series
Heating a residence and the domestic water supply with solar energy is technically feasible in Kentucky. However, it is not feasible to provide 100 percent of the heat requirements. Some backup system is needed for continuous heat during cloudy weather and the cold part of winter. Both passive and active solar heating systems are technically feasible.
Principal Angle, Principal Azimuth, And Principal-Angle Ellipsometry Of Film-Substrate Systems, R. M.A. Azzam, A.-R. M. Zaghloul
Principal Angle, Principal Azimuth, And Principal-Angle Ellipsometry Of Film-Substrate Systems, R. M.A. Azzam, A.-R. M. Zaghloul
Electrical Engineering Faculty Publications
When the film thickness is considered as a parameter, a system composed of a transparent film on an absorbing substrate (in a transparent ambient) is characterized by a range of principal angle ø¯min ≤ ø¯ ≤ ø¯max over which the associated principal azimuth ψ¯ varies between 0° and 90° (i.e., 0° ≤ ψ¯ ≤ 90°) and the reflection phase difference Δ assumes either one of the two values: +π/2 or −π/2. We determine the principal angle ø¯(d) and principal azimuth ψ¯(d) as functions of film thickness d for the vacuum-SiO2-Si system at …
Propagation Of Partially Polarized Light Through Anisotropic Media With Or Without Depolarization: A Differential 4 × 4 Matrix Calculus, R. M.A. Azzam
Propagation Of Partially Polarized Light Through Anisotropic Media With Or Without Depolarization: A Differential 4 × 4 Matrix Calculus, R. M.A. Azzam
Electrical Engineering Faculty Publications
We extend the scope of the Mueller calculus to parallel that established by Jones for his calculus. We find that the Stokes vector S of a light beam that propagates through a linear depolarizing anisotropic medium obeys the first-order linear differential equation dS/dz = mS, where z is the distance traveled along the direction of propagation and m is a 4 × 4 real matrix that summarizes the optical properties of the medium which influence the Stokes vector. We determine the differential matrix m for eight basic types of optical behavior, find its form for the most general anisotropic nondepolarizing …
Deck-Reinforced Slab Systems, Max L. Porter, C. E. Ekberg Jr.
Deck-Reinforced Slab Systems, Max L. Porter, C. E. Ekberg Jr.
CCFSS Library (1939 - present)
No abstract provided.
Acoustic Emission Monitoring Of Weldments, Theodore Hopwood Ii, James H. Havens
Acoustic Emission Monitoring Of Weldments, Theodore Hopwood Ii, James H. Havens
Kentucky Transportation Center Research Report
Weld tests were performed on low-carbon and high-strength, low-alloy steel weldments. The weldments were monitored with an acoustic emission detector during both the 'in-process' and the 'in-cooling' phases of the welding operation. Artificial defects were induced in several of the welds to promote cracking. Some high-strength weldments were designed to produce welds subject to high restraint.
Nondestructive and destructive evaluation of the completed weldments revealed that high acoustic emission activity 'in-cooling' could be correlated with embedded defects and cold-cracking. Copious emission activity was also detected from unflawed weldments. Acoustic emissions were detected in high-strength steel weldments for periods up to …
A Study Of A Wind Tunnel Measurement System For Unsteady Pressures Using Pneumatic Transmission Lines, Mohammed Javed Khan
A Study Of A Wind Tunnel Measurement System For Unsteady Pressures Using Pneumatic Transmission Lines, Mohammed Javed Khan
Theses and Dissertations
The application of pneumatic transmission lines theory to a tube-scanning valve system for unsteady pressure measurements in the AFIT 5-foot wind tunnel is investigated. Transfer gains of various tube-scanning valve configurations were experimentally measured and the validity of a theoretical model verified for a frequency range of 20 Hz to 140 Hz. The selected system having a 0.0625-in. ID flexible tube of 84 in. length connected to a scanning valve was installed in the wind tunnel. Unsteady pressures introduced over an 18 percent airfoil at zero angle of attack were measured with this system. Data were collected for 0, 40, …
Large Cylindrical Bale Transporter, Larry G. Wells
Large Cylindrical Bale Transporter, Larry G. Wells
Biosystems and Agricultural Engineering Faculty Patents
The present application is directed to a transporter for transporting large cylindrical bales which includes a mast assembly adapted to be directly attached to a standard three-point hitch of a tractor. The transporter unit includes a two-wheel type trailer and a bale engaging assembly which is rotatably mounted upon the axle of the wheel assembly so that a load positioned on the bale engaging means may be rotated upwardly to support the load directly on the wheels of the transporter. By pivotally attaching the transporter to the mast assembly, the present invention may readily support the entire transporter above the …
Test 1297: Case 2290 Powershift Diesel, Nebraska Tractor Test Lab
Test 1297: Case 2290 Powershift Diesel, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …
Test 1296: Case 2290 Manual Diesel 8-Speed, Nebraska Tractor Test Lab
Test 1296: Case 2290 Manual Diesel 8-Speed, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …
University Programs In Air Pollution Control: Review And Outlook, August T. Rossano, Harold M. Cota
University Programs In Air Pollution Control: Review And Outlook, August T. Rossano, Harold M. Cota
Civil and Environmental Engineering
From the inception of the National Air Pollution Control program, the U. S. Congress has been mindful of the need and importance of adequate manpower. The challenging technical problems which lie ahead in enforcement, monitoring, testing and research can be effectively dealt with only by individuals with specialized knowledge, skills and experience. In this paper the authors look at undergraduate and graduate training that is being carried out, employment opportunities and the way these may change in the future. A recently completed survey of college level air pollution training in the United States and Canada is included in the report.
Acuta Enews November 1978, Vol. 7, No. 11
Acuta Enews November 1978, Vol. 7, No. 11
ACUTA Newsletters
In This Issue
PRESIDENT'S MESSAGE
PARTY LINE
MOUTH OF THE SOUTH
HELP WANTED
WELCOME NEW MEMBERS
VIRGINIA VIEW
BITS & PIECES
Seatbelt Usage In Kentucky [Nov. 1978], Kenneth R. Agent, Michael Barclay, Robert C. Deen
Seatbelt Usage In Kentucky [Nov. 1978], Kenneth R. Agent, Michael Barclay, Robert C. Deen
Kentucky Transportation Center Research Report
In this report, the effectiveness and usage of seatbelts in Kentucky and factors affecting usage are examined and identified. Data were obtained from three sources: field observations, accident reports, and a questionnaire.
Kentucky drivers and passengers were found to have lower seatbelt usage rates (slightly under 10 percent) than drivers and passengers in other states. The accident data showed that the chances of being killed or severely injured is greatly reduced by wearing a seatbelt. Seatbelts reduced the chance of being killed by a factor of six and the chance of being severely injured by a factor of two. Several …
Energy In Agriculture: Grassland Renovation--Conserves Oil And Energy And Increases Returns From Grass Fields, Edward M. Smith, Larry W. Turner
Energy In Agriculture: Grassland Renovation--Conserves Oil And Energy And Increases Returns From Grass Fields, Edward M. Smith, Larry W. Turner
Agricultural Engineering Energy Series
Fifty-four percent (1.2 billion acres) of land area in the 48 continental United States consists of grasslands, shrublands and open forests. For the most part, there is no alternative use of these land resources in production of food for man other than by way of ruminant animals. Sixty-nine percent (835 million acres) of these land resources is being utilized by grazing animals and forms the basis for a livestock industry which represents 43% of all agricultural receipts in the United States.
Energy In The Home: Energy Usage In Agricultural Production, John N. Walker
Energy In The Home: Energy Usage In Agricultural Production, John N. Walker
Agricultural Engineering Energy Series
Agriculture, even in its most primitive state, includes activities related to the collection and storage of solar energy in a form that can be used to sustain life. Energy must be expended in terms of human labor, animal labor, and fossil energy used for products and machinery utilized by agriculture. Because fossil energy is in short supply, many people are concerned, and rightfully so, about the effect that restricted energy availability will have upon agriculture production.
Consequences Of Light Reflection At The Interface Between Two Transparent Media Such That The Angle Of Refraction Is 45°, R. M.A. Azzam
Consequences Of Light Reflection At The Interface Between Two Transparent Media Such That The Angle Of Refraction Is 45°, R. M.A. Azzam
Electrical Engineering Faculty Publications
The reflection of light at the interface between two transparent, homogeneous and optically isotropic media such that the angle of refraction is 45° has the following interesting consequences: (i) the interface relfectivity for the parallel (p) polarization is the square of that for the perpendicular (s) polarization; (ii) the angular deviation of the propagation direction upon refraction is equal to the polarization (or ellipsometric) angle ψ and (iii) the complex reflection coefficient for the ppolarization is stationary, in both magnitude and phase, with respect to small charges of the (refractive and/or absorptive) optical properties of …
Analysis Of Weekday, Weekend, And Holiday Accident Frequencies, Jerry G. Pigman, Rolands L. Rizenbergs, Donald R. Herd
Analysis Of Weekday, Weekend, And Holiday Accident Frequencies, Jerry G. Pigman, Rolands L. Rizenbergs, Donald R. Herd
Kentucky Transportation Center Research Report
On rural roads, the largest number of accidents have occurred on Saturdays, Fridays, and Sundays, respectively. Tuesdays generally had the lowest number of accidents. The highest accident rates for two-lane roads were on Sundays and Saturdays, and the rates for expressways (interstates and toll roads) were the highest on Sundays. Accident rates on weekends were substantially higher than on weekdays. Rates of fatal and all accidents were lower during holiday periods than during weekends not involving holidays. Holiday periods had fewer accidents per day than weekends but had more accidents per day than weekdays. Traffic during holidays, however, was significantly …
Design System For Asphaltic Concrete Overlays, Herbert F. Southgate, Gary W. Sharpe, Robert C. Deen
Design System For Asphaltic Concrete Overlays, Herbert F. Southgate, Gary W. Sharpe, Robert C. Deen
Kentucky Transportation Center Research Report
A method of designing asphaltic concrete overlays has been developed from (1) Kentucky's theoretical design curves, (2) an estimate of future traffic and the associated fatigue (five procedures are presented according to types of information available), (3) strength of subgrade on subject project (laboratory CBR tests or results of dynamic in-place tests such as the Road Rater), and (4) present condition of the existing pavement (from dynamic in-place tests, roughness measurements, or present serviceability index). Deterioration has been expressed as reduced or effective thicknesses of new-quality materials producing the same measured dynamic deflections. The total thickness required for the future …
Priority Programming For Highway Reconstruction, Charles V. Zegeer, Rolands L. Rizenbergs
Priority Programming For Highway Reconstruction, Charles V. Zegeer, Rolands L. Rizenbergs
Kentucky Transportation Center Research Report
An adequacy-rating procedure was developed for use in priority programming for highway reconstruction. The procedure makes use of 15 roadway and traffic elements to rate highway sections in urban and rural areas based on 100 points. Condition elements (35 points) include a subjective rating of highway foundation, pavement surface, drainage, and maintenance economy. Safety elements (35 points) are stopping sight distance, highway alignment, skid resistance, accident experience, and traffic control devices. Service elements (30 points) include shoulder width, passing opportunity, rideability, surface width, volume/capacity ratio, and average speed.
Some of the advantages of the new procedure include computerized analysis of …
Pavement Evaluation Using Dynamic Deflections, Gary W. Sharpe, Herbert F. Southgate, Robert C. Deen
Pavement Evaluation Using Dynamic Deflections, Gary W. Sharpe, Herbert F. Southgate, Robert C. Deen
Kentucky Transportation Center Research Report
Dynamic test deflections have been duplicated by elastic theory using the Chevron N-layered computer program. Dynamic surface deflections obtained using the Road Rater have been used in conjunction with elastic theory to analyze pavement behavior. A procedure has been developed to use field measured Road Rater deflections to estimate the elastic moduli of the foundation material and to determine the equivalent thicknesses of new material which approximate the behavior of the structure. The estimated moduli and (or) equivalent thicknesses may be used as inputs to design overlay thicknesses. An analysis of the deflections of the first three sensors of the …
Statewide Survey Of Skid Resistances Of Pavements [Nov. 1978], Rolands L. Rizenbergs, James L. Burchett
Statewide Survey Of Skid Resistances Of Pavements [Nov. 1978], Rolands L. Rizenbergs, James L. Burchett
Kentucky Transportation Center Research Report
In 1969, a research-type, skid-test trailer was acquired, U.S. routes were surveyed in 1970 and 1971, and the interstate and toll-road systems were surveyed in 1971. The data were used for research purposes and have been reported. The interstate and toll-road systems were surveyed again for research purposes in 1974. Since October 1974, surveys have been performed under highway safety project grants (interaccounted to 108, subsection OSKID). Primary and principal secondary roads, involving 4,613 miles (7,427 km), were surveyed in 1975. A second skid tester, a survey-type, was acquired in April 1976; and survey-testing of major, rural collector roads continued …
Effect Of Concentration And Ph On Parametric Pumping Separations, Tsu-Kun S. Hsieh
Effect Of Concentration And Ph On Parametric Pumping Separations, Tsu-Kun S. Hsieh
Theses
The technique of parametric pumping represents a new and valuable development in the separation science of proteins. Many conventional protein separation are often processed batchwise. However, parametric pumping offers the possibility of continuous processing; the continuous process provides both the advantages of decreasing the processing time and of minimizing degradation.
Preliminary step testing experiments were conducted to study the equilibrium of protein between the stationary and mobile phase of the sephadex ion exchanger.
It was the purpose of this research to study the feasibility of operating a semi-continuous parametric pump with a sephadex ion exchanger for the separation of a …
New Trends In Building Design And Planning -- For The Age Of Energy Conservation, C. William Brubaker
New Trends In Building Design And Planning -- For The Age Of Energy Conservation, C. William Brubaker
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
In response to increasing energy costs, building design and planning are changing. Rational design can achieve many of the goals of energy conservation.
The Arizona Solar Tax Incentives Package, Donald E. Osborn
The Arizona Solar Tax Incentives Package, Donald E. Osborn
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
The State of Arizona has enacted into law one of the nation's most comprehensive and consumer oriented set of tax incentives to encourage the use of solar energy devices. The development of these incentives and their required regulations and guidelines are covered.
Solar Technology Inventory For The Mid-American Region, L. Icerman, S. K. Parker
Solar Technology Inventory For The Mid-American Region, L. Icerman, S. K. Parker
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
A mailed questionnaire and telephone contact procedure was developed to identify solar equipment manufacturers in the Mid-American Solar Energy Center (MASEC) region and to collect information required to characterize the solar equipment manufacturing industry. Special emphasis was placed on assembling data that are useful in evaluating the commercialization status of the solar energy industry from an equipment supplier viewpoint.