Degree Department

1,603 Matching Results

Results open in a new window/tab.

Advanced development of a pressurized ash agglomerating fluidized-bed coal gasification system. Quarterly progress report, April 1-June 30, 1982 (open access)

Advanced development of a pressurized ash agglomerating fluidized-bed coal gasification system. Quarterly progress report, April 1-June 30, 1982

The overall objective of the Westinghouse coal gasification program is to demonstrate the viability of the Westinghouse pressurized, fluidized bed, gasification system for the production of medium-Btu fuel gas for syngas, electrical power generation, chemical feedstocks, or industrial fuels and to obtain performance and scaleup data for the process and hardware. Progress reports are presented for the following tasks: (1) operation and maintenance of the process development unit (PDU); (2) process analysis; (3) cold flow scaleup facility; (4) process and component engineering and design; and (5) laboratory support studies. Some of the highlights for this period are: TP-032-1, a single stage, oxygen-steam blown gasifier test was conducted in three operational phases from March 30, 1982 through May 2, 1982; TP-032-2 was conducted in two operational phases from May 20, 1982 through May 27, 1982; TP-032-1 and TP-032-2 successfully served as shakedown and demonstrations of the full cyclone cold wall; no visible deposits were found on the cold wall after processing highly fouling coals; samples of product gas produced during TP-032-1, were passed through four different scrubbing solutions and analyzed for 78 EPA primary organic pollutants, all of which were found to be below detection limits; TP-M004, a CO/sub 2/ tracer …
Date: October 21, 1982
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Double proton beam for E-621 (open access)

Double proton beam for E-621

For experiment 621 we plan to modify the transport system of the Proton-center beam to create two side-by-side proton beams separated by two inches. This Technical Memo describes how we plan to do this, and the results we hope to attain.
Date: October 1, 1982
Creator: Thomson, G.B.
Object Type: Report
System: The UNT Digital Library
Tevatron I: Large Bore Quad lamination analysis (open access)

Tevatron I: Large Bore Quad lamination analysis

Stacking, compression, and welding of the laminations for the TeV I Large Bore Quad results in a deformation due to springback which is unacceptable due to magnetic field requirements. ANSYS has been used to analyze a solution to this problem.
Date: October 26, 1982
Creator: Leininger, M.
Object Type: Report
System: The UNT Digital Library
Review of single transient oscillographic recorders with gigahertz bandwidth (open access)

Review of single transient oscillographic recorders with gigahertz bandwidth

In laser driven inertial confinement fusion research, at Livermore, we are diagnosing many phenomena that occur in a time frame that exceeds the capabilities of even the most advanced, present day oscillographic recording instruments. Many of the by-products of the interaction between the laser beam and fuel pellet are monitored to determine the specifics of the fusion process. By the use of appropriate detectors, we convert the information contained in the radiated by-products to electrical signals which are recorded on high bandwidth oscillographic recorders. Our present range of recording capabilities for one x-ray diagnostic measurement in use at Livermore is shown. A commonly used configuration consists of an XRD-31 x-ray detector connected to a direct access Tektronix R7912 transient digitizer using 1/2 in. diameter air dielectric coaxial cable. This configuration gives a system fwhm of approximately 335 ps. Our premier configuration, on the other hand, consists of an improved response detector and a French Thomson-CSF TSN-660 oscilloscope with a shorter length of coaxial cable (typically 20 feet). The system fwhm in this case is less than 120 ps which is our fastest oscillographic recording system at the present time.
Date: October 20, 1982
Creator: Campbell, D.E.
Object Type: Article
System: The UNT Digital Library
Integration of hydrothermal energy economics related quantitative studies (open access)

Integration of hydrothermal energy economics related quantitative studies

An evaluation of the existing hydrothermal energy economics related quantitative studies is provided. The objective is to present the similarities and differences in methodology and assumptions, and explain the impact of these differences on the energy price estimates. A brief summary of the study categories, economic evaluation methodology, technical and economic assumptions and major outputs of the studies is presented. The relative importance and the likely effects of the most important technical and economic factors on the cost of energy are discussed. The sensitivity analysis results provided are useful in judging the credibility as well as the relative weaknesses and strengths of the various cost of energy estimation studies. The major conclusions of the evaluation and the recommendations for future research are presented.
Date: October 1, 1982
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Stability of Tube Rows in Crossflow (open access)

Stability of Tube Rows in Crossflow

A mathematical model for the instability of tube rows subjected to crossflow is examined. The theoretical model, based on the fluid-force data for a pitch-to-diameter ratio of 1.33, provides additional insight into the instability phenomenon. Tests are also conducted for three sets of tube rows. The effects of mass ratio, tube pitch, damping, detuning and finned tubes are investigated. Theoretical results and experimental data are in good agreement.
Date: October 1982
Creator: Chen, S. S. & Jendrzejczyk, J. A.
Object Type: Report
System: The UNT Digital Library
Randomly Generated Test Problems for Positive Definite Quadratic Programming (open access)

Randomly Generated Test Problems for Positive Definite Quadratic Programming

A procedure is described for randomly generating positive definite quadratic programming test problems. The test problems are constructed in the form of linear least squares problems subject to linear constraints. The probability measure for the problems so generated is invariant under orthogonal transformations. The procedure allows the user to specify the size of the least squares problem (number of unknown parameters, number of observations, and number of constraints); the relative magnitude of the residuals; the condition number of the Hessian matrix of the objective function; and the structure of the feasible region (number of equality constraints and the number of inequalities which will be active at the feasible starting point and at the optimal solution). An example is given illustrating how these problems can be used to evaluate the performance of a software package.
Date: October 1982
Creator: Lenard, Melanie L. & Minkoff, Michael
Object Type: Report
System: The UNT Digital Library
Final Report of Experimental Laboratory-Scale Brittle Fracture Studies of Glasses and Ceramics (open access)

Final Report of Experimental Laboratory-Scale Brittle Fracture Studies of Glasses and Ceramics

This report discuses results of an experimental program to characterize the fragments generated when brittle glasses and cermaics are impacted.
Date: October 1982
Creator: Jardine, L. J.; Mecham, W.; Reedy, G. T. & Steindler, M. J.
Object Type: Report
System: The UNT Digital Library
Effects of misalignments of the solenoid of the colliding-beams detector on the orbit of the beams (open access)

Effects of misalignments of the solenoid of the colliding-beams detector on the orbit of the beams

Because the solenoid is very weak for 1 TeV beams, the alignment tolerances as far as the beams are concerned can be negligibly loose (The tolerances will be determined rather by accuracies for the measurement and analysis of particle tracks.) and there is no need to compensate for its orbital effects.
Date: October 1, 1982
Creator: Teng, L.C.
Object Type: Report
System: The UNT Digital Library
System for Analyzing Coal-Liquefaction Products (open access)

System for Analyzing Coal-Liquefaction Products

A system for analyzing constituents of coal-derived materials comprises three adsorption columns and a flow-control arrangement which permits separation of both aromatic and polar hydrocarbons by use of two eluent streams. 4 figures.
Date: October 29, 1982
Creator: Dinsmore, Stanley R. & Mrochek, John E.
Object Type: Text
System: The UNT Digital Library
Convective heat transfer in buildings: recent research results. Rev (open access)

Convective heat transfer in buildings: recent research results. Rev

Recent experimental and numerical studies of convective heat transfer in buildings are described, and important results are presented. The experimental work has been performed on small-scale, water-filled enclosures; the numerical analysis results have been produced by a computer program based on a finite-difference scheme. The convective processes investigated in this research are: (1) natural convective heat transfer between room surfaces and the adjacent air, (2) natural convective heat transfer between adjacent rooms through a doorway or other openings, and (3) forced convection between the building and its external environment (such as wind-driven ventilation through windows, doors, or other openings). Results obtained at Lawrence Berkeley Laboratory (LBL) for surface convection coefficients are compared with existing ASHRAE correlations, and differences can have a significant impact on the accuracy of building energy analysis computer simulations. Interzone coupling correlations obtained from experimental work are in reasonable agreement with recently published experimental results and with earlier published work. Numerical simulations of wind-driven natural ventilation are presented. They exhibit good qualitative agreement with published wind-tunnel data.
Date: October 1, 1982
Creator: Bauman, F.; Gadgil, A.; Kammerud, R.; Altmayer, E. & Nansteel, M.W.
Object Type: Article
System: The UNT Digital Library
Low-pressure ion source (open access)

Low-pressure ion source

A low pressure ion source for a neutron source comprises a filament cathode and an anode ring. Approximately 150V is applied between the cathode and the anode. Other electrodes, including a heat shield, a reflector and an aperture plate with a focus electrode, are placed at intermediate potentials. Electrons from the filament drawn out by the plasma and eventually removed by the anode are contained in a magnetic field created by a magnet ring. Ions are formed by electron impact with deuterium or tritium and are extracted at the aperture in the focus electrode. The ion source will typically generate a 200 mA beam through a 1.25 cm/sup 2/ aperture for an arc current of 10A. For deuterium gas, the ion beam is over 50 percent D/sup +/ with less than 1% impurity. The current density profile across the aperture will typically be uniform to within 20%.
Date: October 27, 1982
Creator: Bacon, F.M.; Brainard, J.P.; O'Hagan, J.B. & Walko, R.J.
Object Type: Text
System: The UNT Digital Library
Collection of CASIM calculations (open access)

Collection of CASIM calculations

Monte Carlo calculations of hadronic cascades at Fermilab have usually been done using the code CASIM written by A. Van Ginneken. These calculations are often performed to determine the quantity of shielding required for radiation protection purposes. A number of examples of such calculations have been presented previously. Several years of practical experience have led the author to develop the collection of additional cases included in the present report. These results along with those given earlier will serve as a useful reference. No attempt was made here to consider all possibilities; rather, the purpose was to develop a useful set of examples. Exceptionally intricate cases should, of course, receive individualized attention as appropriate.
Date: October 22, 1982
Creator: Cossairt, J.D.
Object Type: Report
System: The UNT Digital Library
Sonic resonator control and method for determining component concentration in multiple-component liquid (open access)

Sonic resonator control and method for determining component concentration in multiple-component liquid

This invention teaches a control to be used in smelting aluminum by the electrolysis breakdown of alumina (Al/sub 2/O/sub 3/) in a molten electrolyte heated to approximately 950 to 1000/sup 0/C. The invention provides a sonic resonator and control that can accurately detect the resonant frequency of the resonator in the molten electrolyte. The resonator preferably is made with tubular side wall 1/4 of the sonic wavelength, or is a quarter wave resonator. A wave generator inputs a signal having a range of frequencies that includes the resonant frequency, so that a peak resonant output at the resonant frequency can be detected on an oscilloscope or like detector. This instantaneous resonant frequency is then checked against an accurate data base correlating the resonant frequencies of the resonator in the electrolyte at specific alumina concentrations normally experienced throughout the electrolysis cycle. The electrolysis cycle can thus be controlled and recharged at any predetermined low alumina concentration greater than where the anode effect phase of the cycle normally might begin.
Date: October 29, 1982
Creator: Shen, S.Y.
Object Type: Text
System: The UNT Digital Library
Investigation into the feasibility of wind as an alternate energy resource at selected North Georgia sites (open access)

Investigation into the feasibility of wind as an alternate energy resource at selected North Georgia sites

Anemometers were placed at four selected sites in North Georgia during the period July, 1980, to June, 1982. Regular wind speed readings were taken using accumulating recorders and average daily wind speeds calculated for each location. Three wind speed categories were determined: (a) average below 7 mph; (b) average between 7 and 25 mph; (c) average above 25 mph. One site was abandoned after seven months due to lack of expected wind; another site was closed after 4.5 months due to continuing excessive and damaging winds. Two sites were determined, after 12 to 20 months of data collecting respectively, to have sufficient wind resources in a usable time pattern to merit further investigation.
Date: October 26, 1982
Creator: Brock, D.L.
Object Type: Report
System: The UNT Digital Library

[Photograph 2012.201.B0051.0944]

Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Early Morning Crash Kills City Man-- Whang Young Jin, 32, of 604 Westwood, was killed about 6:30 a.m. today when his car, shown above, left the east-bound lane of I-40 near MacArthur and struck a west-bound car driven by Herbert D. Blair, 43, of 5616 Highley Drive."
Date: October 15, 1982
Creator: Klock, Roger
Object Type: Photograph
System: The Gateway to Oklahoma History
Southwest Retort, Volume 35, Number 2, October 1982 (open access)

Southwest Retort, Volume 35, Number 2, October 1982

This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date: October 1982
Creator: American Chemical Society. Dallas/Fort Worth Section.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Increased Automobile Fuel Efficiency and Synthetic Fuels: Alternatives for Reducing Oil Imports: Background Paper 2: Selected Technical and Economic Comparisons of Synfuel Options (open access)

Increased Automobile Fuel Efficiency and Synthetic Fuels: Alternatives for Reducing Oil Imports: Background Paper 2: Selected Technical and Economic Comparisons of Synfuel Options

A study by the Office of Technology Assessment (OTA) that provides "technical and economic comparisons among selected synfuel technologies which, to the extent possible, provides a background and basis which may assist the OTA in its policy deliberations" (p. 1).
Date: October 1982
Creator: United States. Congress. Office of Technology Assessment.
Object Type: Report
System: The UNT Digital Library
Monitoring the chemistry and materials of the Magma Geothermal Binary Cycle Generating Plant (open access)

Monitoring the chemistry and materials of the Magma Geothermal Binary Cycle Generating Plant

The Magma Binary Cycle Plant at the East Mesa KGRA is the first geothermal generating plant of its kind in the US. In cooperation with the Magma Electric Company, the Pacific Northwest Laboratory conducted a DOE sponsored program at the plant to document the chemistry and materials performance during the first two years of operation. This paper describes the methods used, the instruments and the results.
Date: October 8, 1982
Creator: Shannon, Donald W.
Object Type: Article
System: The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 74, No. 42, Ed. 1 Thursday, October 21, 1982 (open access)

The Tulia Herald (Tulia, Tex.), Vol. 74, No. 42, Ed. 1 Thursday, October 21, 1982

Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date: October 21, 1982
Creator: Tooley, Wendell
Object Type: Newspaper
System: The Portal to Texas History
The Panola Panorama (Carthage, Tex.), Vol. 33, No. 2, Ed. 1 Monday, October 11, 1982 (open access)

The Panola Panorama (Carthage, Tex.), Vol. 33, No. 2, Ed. 1 Monday, October 11, 1982

Semimonthly student newspaper from Panola Junior College in Carthage, Texas that includes news of interest to the Panola Junior College community along with advertising.
Date: October 11, 1982
Creator: Kaun, Paul
Object Type: Newspaper
System: The Portal to Texas History
The Panola Panorama (Carthage, Tex.), Vol. 33, No. 3, Ed. 1 Friday, October 15, 1982 (open access)

The Panola Panorama (Carthage, Tex.), Vol. 33, No. 3, Ed. 1 Friday, October 15, 1982

Semimonthly student newspaper from Panola Junior College in Carthage, Texas that includes news of interest to the Panola Junior College community along with advertising.
Date: October 15, 1982
Creator: Kaun, Paul
Object Type: Newspaper
System: The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 74, No. 41, Ed. 1 Thursday, October 14, 1982 (open access)

The Tulia Herald (Tulia, Tex.), Vol. 74, No. 41, Ed. 1 Thursday, October 14, 1982

Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date: October 14, 1982
Creator: Tooley, Wendell
Object Type: Newspaper
System: The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 74, No. 40, Ed. 1 Thursday, October 7, 1982 (open access)

The Tulia Herald (Tulia, Tex.), Vol. 74, No. 40, Ed. 1 Thursday, October 7, 1982

Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date: October 7, 1982
Creator: Tooley, Wendell
Object Type: Newspaper
System: The Portal to Texas History