447 Matching Results

Results open in a new window/tab.

Flow visualizations, velocity measurements, and surface convection measurements in simulated 20. 8-cm Nova box amplifier cavities (open access)

Flow visualizations, velocity measurements, and surface convection measurements in simulated 20. 8-cm Nova box amplifier cavities

Reported are fluid mechanics experiments performed in models of the 20.8-cm Nova amplifier lamp and disk cavities. Lamp cavity nitrogen flows are shown, by both flow visualization and velocity measurements, to be acceptably uniform and parallel to the flashlamps. In contrast, the nitrogen flows in the disk cavity are shown to be disordered. Even though disk cavity flows are disordered, the simplest of three proposed nitrogen introduction systems for the disk cavity was found to be acceptable based on convection measurements made at the surfaces of simulated laser disks.
Date: October 31, 1983
Creator: Julien, J.L. & Molishever, E.L.
Object Type: Report
System: The UNT Digital Library
Preliminary design of the Carrisa Plains solar central receiver power plant. Volume III, Book 1. Design description (open access)

Preliminary design of the Carrisa Plains solar central receiver power plant. Volume III, Book 1. Design description

The design of the 30 MWe central receiver solar power plant to be located at Carrisa Plains, San Luis Obispo County, California, is summarized. The plant uses a vertical flat-panel (billboard solar receiver located at the top of a tower to collect solar energy redirected by approximately 1900 heliostats located to the north of the tower. The solar energy is used to heat liquid sodium pumped from ground level from 610 to 1050/sup 0/F. The power conversion system is a non-reheat system, cost-effective at this size level, and designed for high-efficiency performance in an application requiring daily startup. Successful completion of this project will lead to power generation starting in 1986. This report discusses in detail the design of the collector system, heat transport system, thermal storage subsystem, heat transport loop, steam generation subsystem, electrical, instrumentation, and control systems, power conversion system, master control system, and balance of plant. The performance, facility cost estimate and economic analysis, and development plan are also discussed.
Date: December 31, 1983
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Line intensities for diagnosing laser-produced plasmas (open access)

Line intensities for diagnosing laser-produced plasmas

We have measured relative line intensities of the K x-ray spectra of Si, Cl, and Ca from laser-produced plasmas to assess their usefulness as a plasma diagnostic. The different elements are added at low concentrations to CH disks which are irradiated at 5 x 10/sup 14/ W/cm/sup 2/ with a 0.53 ..mu..m laser pulse of 20 Joules at 1 nsec. The concentration of each element is kept low in order not to change the Z of the plasma, and therefore the plasma dynamics. The various spectra are measured with a time-resolved spectrograph to obtain line intensities as a function of time over the length of the laser pulse. These relative intensities of various He-like and H-like lines are compared with calculations from a steady-state level population code. The results give good consistency among the various line ratios. Agreement is not as good for analysis of the Li-like satellite lines. Modelling of the Li-like lines need further investigation. 10 references, 9 figures.
Date: October 31, 1983
Creator: Kauffman, R.L.; Matthews, D.L.; Lee, R.W.; Whitten, B.L. & Kilkenny, J.D.
Object Type: Article
System: The UNT Digital Library

[Photograph 2012.201.B0143.0128]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Volunteer Cheryl Cooper tells a caller why voting for Oklahoma City's 1-cent sales tax increase makes sense."
Date: October 31, 1983
Creator: Beckel, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0147.0284]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Putnam City Optimist Club member Ron Cox and Bill (Gene) Taylor became involved in the club's sports programs years ago for the same reason - to share recreational time with their kids."
Date: August 31, 1983
Creator: Hoke, Doug
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0139.0204]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: January 31, 1983
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0140.0018]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Hallie Collins, Northwest Optimist Kids' Fishing Derby chairman, shows contestants prizes that will be given after the event Saturday."
Date: May 31, 1983
Creator: Miller, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0347.0152]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "John Konz center, is the guest of Marvin and Norma Bacharach at the first showing of his dollhouse in Kirkpatrick Center."
Date: August 31, 1983
Creator: Gooch, Steve
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0350.0112]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Lake Sardis and dam, built by the Army Corps of Engineers and opened in January after six years' construction, is located at the conjunction of Pittsburg, Pushmataha and Latimer counties near Clayton."
Date: January 31, 1983
Creator: McLaughlin, Al
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0350.0110]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: January 31, 1983
Creator: McLaughlin, Al
Object Type: Photograph
System: The Gateway to Oklahoma History
Preliminary design of the Carrisa Plains solar central receiver power plant. Volume I. Executive summary (open access)

Preliminary design of the Carrisa Plains solar central receiver power plant. Volume I. Executive summary

The design of the 30 MWe central receiver solar power plant to be located at Carrisa Plains, San Luis Obispo County, California, is summarized. The plant uses a vertical flat-panel (billboard) solar receiver located at the top of a tower to collect solar energy redirected by approximately 1900 heliostats located to the north of the tower. The solar energy is used to heat liquid sodium pumped from ground level from 610 to 1050/sup 0/F. The power conversion system is a non-reheat system, cost-effective at this size level, and designed for high-efficiency performance in an application requiring daily startup. Successful completion of this project will lead to power generation starting in 1986. This report also discusses plant performance, operations and maintenance, development, and facility cost estimate and economic analysis.
Date: December 31, 1983
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Basic studies of atomic dynamics. Progress report, July 1, 1982-August 31, 1983 (open access)

Basic studies of atomic dynamics. Progress report, July 1, 1982-August 31, 1983

The observed but puzzling stability of resonant states a stride potential ridges is shown to reflect a general self-focussing property of convergent waves. An approach to the solution of nonseparable wave equations is introduced which utilizes their separability in asymptotic limits. Progress is outlined in describing the properties of N-electron atoms in highly condensed states.
Date: August 31, 1983
Creator: Fano, U.
Object Type: Report
System: The UNT Digital Library
Model approach for simulating the thermodynamic behavior of the MFTF cryogenic cooling systems - a status report (open access)

Model approach for simulating the thermodynamic behavior of the MFTF cryogenic cooling systems - a status report

A numerical model for calculating the thermodynamic behavior of the MFTF-B cryogenic cooling system is described. Nine component types are discussed with governing equations given. The algorithm for solving the coupled set of algebraic and ordinary differential equations is described. The model and its application to the MFTF-B cryogenic cooling system has not been possible due to lack of funding.
Date: August 31, 1983
Creator: Sutton, S. B.; Stein, W.; Reitter, T. A. & Hindmarsh, A. C.
Object Type: Report
System: The UNT Digital Library
Factors influencing the transport of actinides in the groundwater environment. Final report (open access)

Factors influencing the transport of actinides in the groundwater environment. Final report

This report summarizes investigations of factors that significantly influence the transport of actinide cations in the groundwater environment. Briefly, measurements of diffusion coefficients for Am(III), Cm(III), and Np(V) in moist US soils indicated that diffusion is negligible compared to mass transport in flowing groundwater. Diffusion coefficients do, however, indicate that, in the absence of flowing water, actinide elements will migrate only a few centimeters in a thousand years. The remaining investigations were devoted to the determination of distribution ratios (K/sub d/s) for representative US soils, factors influencing them, and chemical and physical processes related to transport of actinides in groundwaters. The computer code GARD was modified to include complex formation to test the importance of humic acid complexing on the rate of transport of actinides in groundwaters. Use of the formation constant and a range of humic acid, even at rather low concentrations of 10/sup -5/ to 10/sup -6/ molar, significantly increases the actinide transport rate in a flowing aquifer. These computer calculations show that any strong complexing agent will have a similar effect on actinide transport in the groundwater environment. 32 references, 9 figures.
Date: July 31, 1983
Creator: Sheppard, J.C. & Kittrick, J.A.
Object Type: Report
System: The UNT Digital Library
Improved generator for use with low-speed rotating machines. Final report (open access)

Improved generator for use with low-speed rotating machines. Final report

The goal of this project was to construct a low-technology, maintenance-free dc electrical generator suited for use with low-speed rotating machines such as windmills or waterwheels. The generator consists of permanent magnets affixed to the circumference of the rotating device, and stationary coils mounted on a semicircular frame. As the device rotates, the magnets move past the coils and magnetically induce an ac voltage in the coils. This voltage is rectified and stored in a battery. No gears, belts, or brushes are used, so the generator operates quietly and without maintenance. The purpose of mounting the magnets at the circumference of the rotating device is to achieve high relative velocities between magnets and coils even at slow rotations, in the hope of extracting energy from very light winds or slowly flowing water. Such a generator was constructed as part of a ten-foot-diameter windmill to test the concept. The generator easily reaches charging voltages at low speeds, and operates quietly without mechanical wear. But the charging current is very low in comparison to a wind turbine of conventional design. The experiment allows fundamental design problems to be identified.
Date: March 31, 1983
Creator: Goerz, J.W.
Object Type: Report
System: The UNT Digital Library
Partitioning of cesium in hydrofracture grouts (open access)

Partitioning of cesium in hydrofracture grouts

Phase characterization of hydrofracture grouts was accomplished with the use of optical microscopy, scanning electron microscopy, x-ray diffraction, and ..beta..-..gamma.. autoradiography. A laboratory-produced sample containing 1 wt % stable cesium and an actual hydrofracture grout sheet obtained by core dirlling were examined during this work. The phases present in these samples were identified and cesium was found to be absorbed almost entirely by illite clay agglomerates. These clay agglomerates were tightly bound within the grout structure by hydrated calcium silicates. The ..beta..-..gamma.. autoradiography of the core-drilled sample verified that cesium and other radionuclides were trapped within the 20-year-old grout and had not migrated into trapped shale fragments. 14 references, 3 figures, 1 table.
Date: August 31, 1983
Creator: Stinton, D.P.; McDaniel, E.W. & Weeren, H.O.
Object Type: Report
System: The UNT Digital Library
Geothermal Project. Final report (open access)

Geothermal Project. Final report

The project was designed to take 95/sup 0/F water from an existing well and process it through a heat exchanger carrying supply water for our boiler make up and domestic hot water systems. The temperature of this water runs from 55/sup 0/F to 65/sup 0/F. In operation it was possible to raise the temperature of this water an average of approximately 12/sup 0/F. The amount of energy captured was recorded and it was found that one can capture approximately 199 x 10/sup 6/ Btu/Mo. Using current energy costs and a boiler efficiency factor of .8 a potential annual savings of approximately $11,104/year was calculated. The total cost of the project was $31,893.68. Using these figures a simple pay back period of 2.9 years was calculated.
Date: March 31, 1983
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Neutral beams for mirrors (open access)

Neutral beams for mirrors

An important demonstration of negative ion technology is proposed for FY92 in the MFTF-..cap alpha..+T, an upgrade of the Mirror Fusion Test Facility at the Lawrence Livermore National Laboratory. This facility calls for 200-keV negative ions to form neutral beams that generate sloshing ions in the reactor end plugs. Three different beam lines are considered for this application. Their advantages and disadvantages are discussed.
Date: August 31, 1983
Creator: Fink, J.H.
Object Type: Article
System: The UNT Digital Library

[Photograph 2012.201.B0261B.0325]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Plant manager Tom Hollopeter says he goes out of his way to keep the nearly 1,500 workers at the Firestone Tire & Rubber plant fully informed, revealing the good news with the bad."
Date: July 31, 1983
Creator: Miller, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0323.0014]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Richard Kastendieck stands atop a ladder to lead the OSU marching band."
Date: August 31, 1983
Creator: McDaniel, David
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0350.0109]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: January 31, 1983
Creator: McLaughlin, Al
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0333.0031]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Phil and Vicki Van Stavern meet guests Ellen and Neil Kimerer prior to Oklahoma County Medical Society auxiliary dinner in the home of Dr. and Mrs. Gary Roberts."
Date: January 31, 1983
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0248.0817]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: January 31, 1983
Creator: Southerland, Paul
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0306B.0543]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Councilman Goree James scans trash dumped in the 2200 block of NE 13."
Date: August 31, 1983
Creator: Miller, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History