Access
Partner
UNT Libraries Special Collections
227
Oklahoma Historical Society
64
UNT Libraries Government Documents Department
36
Sterling Municipal Library
11
Carl Albert Congressional Research and Studies Center
9
Calhoun County Public Library
9
Deaf Smith County Library
8
UNT Libraries
8
Hopkins County Genealogical Society
7
Burleson Public Library
6
73 More
Collection
KXAS-NBC 5 News Collection
218
Texas Digital Newspaper Program
184
Tocker Foundation Grant
89
Oklahoma Digital Newspaper Program
78
Office of Scientific & Technical Information Technical Reports
24
Ladd & Katherine Hancher Library Foundation
14
Chickasha Newspaper Collection
13
Altus Times-Democrat
11
The Baytown Sun
11
Sapulpa Herald
11
110 More
Country
States
Year
Month
Day
Language
535 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
535
next
(Performance evaluation of fabric bag filters on a bench-scale coal gasifier)
The objective of the proposed work is to demonstrate the operational and economic feasibility of using high-temperature ceramic filters for particulate control in a variety of coal gasification power generating systems.
Date:
October 11, 1985
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Reaction rate calculations via transmission coefficients
The transmission coefficient of a wavepacket traversing a potential barrier can be determined by steady state calculations carried out in imaginary time instead of by real time dynamical calculations. The general argument is verified for the Eckart barrier potential by a comparison of transmission coefficients calculated from real and imaginary time solutions of the Schroedinger equation. The correspondence demonstrated here allows a formulation for the reaction rate that avoids difficulties due to both rare events and explicitly time dependent calculations. 5 refs., 2 figs.
Date:
July 11, 1985
Creator:
Feit, M. D. & Alder, B. J.
Object Type:
Article
System:
The UNT Digital Library
[News Clip: Mattox]
Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany an unknown news story. This b-roll footage includes State Attorney General Jim Mattox walking in a courthouse flanked by press. This story aired at 6:00 P.M.
Date:
March 11, 1985
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Weather damage]
Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany a news story about storm damage in a neighborhood. This b-roll footage shows people in their front yards, a damaged sign, and street flooding. This story aired at 10:00 P.M.
Date:
May 11, 1985
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: TWC Stays Wesleyan]
Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany a news story about Texas Wesleyan University board's decision to remain in the Polytechnic Heights neighborhood of Fort Worth. In this footage, an unidentified university representative makes a statement on campus. This story aired at 6:00 P.M.
Date:
April 11, 1985
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Rustler Rhapsody]
Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany a movie review by Bobbie Wygant of the film "Rustlers' Rhapsody." This includes only scenes from the film. This story aired at 10:00 P.M.
Date:
May 11, 1985
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 77, No. 28, Ed. 1 Thursday, July 11, 1985
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
July 11, 1985
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 77, No. 15, Ed. 1 Thursday, April 11, 1985
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
April 11, 1985
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
Electrical configuration for magnetic drift pumping on the tandem mirror experiment-upgrade (TMX-U)
Magnetic drift pumping on TMX-U involves driving four antennae through high Q-resonant circuits. One of the key elements in the resonant circuit is a variable inductor able to carry the 3500 amperes through the circuit and maintain its shape and inductance. The eight resonant circuits can be combined to feed the four antennae with one or two frequencies on each antenna, or frequency shift keying between two frequencies. Each resonant circuit is fed by two 10 to 30 kHz exciters capable of delivering 80 kW each to the circuit. Each exciter receives its power from its own adjustable 0 to 400 volt power supply. The entire system is controlled by a CAMAC control system over a fiber-optic link. The control system checks interlock status, controls ''On'' and ''Off'' status, calculates and adjusts phasing of the exciters for addition or deletion of the proper beat frequencies, and monitors operation. 3 refs., 5 figs.
Date:
November 11, 1985
Creator:
Jackson, M.C.; Kane, R.J. & Hulsey, S.D.
Object Type:
Article
System:
The UNT Digital Library
E parallel B end-loss-ion analyzer for the Tandem Mirror Experiment-Upgrade (TMX-U). Revision 1
We have installed a new diagnostic instrument to investigate ions emanating along magnetic-field lines of the TMX-U tandem-mirror experiment. This analyzer contains parallel electric and magnetic fields, which yield ion mass and energy spatial separation. A dual array of 128 copper collector plates detects particles in the ion flux that is first collimated and then focused through the 180-degree bending magnetic field. An electric field applied transverse to the bending particle path then separates the ion masses in the direction perpendicular to the magnetic-pole faces while the magnetic field spreads out the different energies of each mass in a plane parallel to the magnetic-pole tips. The CAMAC-based data recorders are fiber-optically coupled to the system controller for data acquisition, analysis, and display. A commercial CAMAC data recorder was modified for current input. We expect to measure higher particle energies than the present gridded end-loss analyzers as well as to more accurately determine the energy spectra.
Date:
November 11, 1985
Creator:
Wood, B. E.; Foote, J. H.; Coutts, G. W.; Pedrotti, L. R.; Schlander, L. F. & Brown, M. D.
Object Type:
Article
System:
The UNT Digital Library
[News Clip: Valentine bears]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
February 11, 1985, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Mattox]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
February 11, 1985, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Concepts and development of drift pumping for the Tandem Mirror Experiment-Upgrade (TMX-U)
Low-energy ions trapped in the thermal barrier region of the TMX-U plasma cause a potential reduction which results in increased scattering and less thermal isolation between regions of the plasma. A method of removing these ions using magnetic field perturbations at the ion drift frequency has been developed. The concepts of ''drift pumping'' and hardware development are described in this paper. 5 refs., 7 figs.
Date:
November 11, 1985
Creator:
Kane, R. J.; Pedrotti, L. R.; Brooksby, C. A.; Cummins, W. F.; Jackson, M. C.; Poulsen, P. et al.
Object Type:
Article
System:
The UNT Digital Library
Assessment of the application of the sputtering process to beryllium for hardening optical coatings
Two principal deposition processes are compared for the case of depositing 1 to 2 ..mu..m beryllium on fused-silica substrates. While the evaporation-deposition process offers advantages such as higher deposition rate, purification of the evaporant and efficient use of masks, the sputter-deposition is more versatile, and therefore more effective, in varying and controlling the microstructure of the deposits. The versatility comes about because the latter process has five major operational parameters to be selected or adjusted. Consequently, sputter-deposited beryllium films are expected to display more desirable microstructures and better surface finish than evaporation-deposited films.
Date:
November 11, 1985
Creator:
Chen, C.W. & Alford, C.S.
Object Type:
Report
System:
The UNT Digital Library
Ion Cyclotron Resonant Heating (ICRH) system used on the Tandem Mirror Experiment-Upgrade (TMX-U)
Ion Cyclotron Resonant Heating (ICRH) is part of the plasma heating system used on the TMX-U experiment. Radio frequency (RF) energy is injected into the TMX-U plasma at a frequency near the fundamental ion resonance (2 to 5 MHz). The RF fields impart high velocities to the ions in a direction perpendicular to the TMX-U magnetic field. Particle collision then converts this perpendicular heating to uniform plasma heating. This paper describes the various aspects of the ICRH system: antennas, power supplies, computer control, and data acquisition. 4 refs., 10 figs.
Date:
November 11, 1985
Creator:
Ferguson, S. W.; Maxwell, T. M.; Antelman, D. R.; Scofield, D. W.; Brooksby, C. A.; Karsner, P. G. et al.
Object Type:
Article
System:
The UNT Digital Library
Radial implosion acceleration
A scheme to generate high accelerating gradients (approximately (approx.) a few gigaelectronvolts per meter) is described. The acceleration is nonresonant so that staging may be fairly easy, and the energy source is relativistic e-beams so that a relatively high over all efficiency may be achievable.
Date:
February 11, 1985
Creator:
Channell, P.J.
Object Type:
Article
System:
The UNT Digital Library
From 15 minutes to 7 minutes: a progress report on improving the performance of the Tandem Mirror Experiment-Upgrade (TMX-U) Diagnostic Computer System
May 1983 marked the beginning of an intensive effort to both improve the operating reliability, and improve the performance of the TMX-U Diagnostic Computer System. At that time, the system was handling (acquiring, storing, processing, plotting, displaying, and archiving) about 3 million bytes (Mb) of data per shot, with a 15-minute cycle time between shots. In addition, the system was fairly fragile, with frequent (about 5 times/day) crashes, requiring re-booting. At the present time, the system reliably handles about 5 Mb of data per shot, with a 7-minute cycle time between shots. This improvement was accomplished by a combination of new hardware, rearranging existing hardware, and new or revised software. Hardware changes were made in two areas. First, the shared disks were rearranged into different domains to make more efficient use of locking features. Second, we purchased and installed a solid-state RAM disk emulator (8 megabytes) to provide extremely fast access to lists and files that must be accessed frequently. In the software area, we made improvements in several areas. Initial effort went into finding bugs and optimizing existing code. We developed a template so that we could produce efficient code from applications that had first been developed on a …
Date:
November 11, 1985
Creator:
Bell, H.H. Jr.; Brown, M.D.; Moller, J.M.; Meyer, W.H. & Benway, A.W.
Object Type:
Article
System:
The UNT Digital Library
The Ingleside Index (Ingleside, Tex.), Vol. 36, No. 9, Ed. 1 Thursday, April 11, 1985
Weekly newspaper from Ingleside, Texas that includes local, state, and national news along with advertising.
Date:
April 11, 1985
Creator:
Fischer, Tim
Object Type:
Newspaper
System:
The Portal to Texas History
IFR code for secondary particle dynamics
A numerical simulation has been constructed to obtain a detailed, quantitative estimate of the electromagnetic fields and currents existing in the Advanced Test Accelerator under conditions of laser guiding. The code treats the secondary electrons by particle simulation and the beam dynamics by a time-dependent envelope model. The simulation gives a fully relativistic description of secondary electrons moving in self-consistent electromagnetic fields. The calculations are made using coordinates t, x, y, z for the electrons and t, ct-z, r for the axisymmetric electromagnetic fields and currents. Code results, showing in particular current enhancement effects, will be given.
Date:
October 11, 1985
Creator:
Teague, M. R. & Yu, S. S.
Object Type:
Article
System:
The UNT Digital Library
Plasma-potential diagnostic (PPD) hardware used on the Tandem Mirror Experiment-Upgrade (TMX-U)
The PPD is an instrument used to indirectly measure the potential of the center-cell plasma of TMX-U. Thallium ions are injected at energies of about 60 keV from an ion gun capable of 80 kV operation. The singly charged ions collide with plasma electrons and generate double-charged ions. Ions in the higher charge state exit the plasma and are detected in an electrostatic energy analyzer. From measurements of the injected ion energy and the output ion energy one can determine the plasma potential in the ionization region. The absolute potential measurements required careful calibrations of the energy analyzer. Hardware and techniques for calibration of the energy analyzer are discussed. 2 refs., 4 figs.
Date:
November 11, 1985
Creator:
Steele, D. L.; Hornady, R. S.; Stever, R. D.; Coutts, G. W. & Nelson, D. H.
Object Type:
Article
System:
The UNT Digital Library
Gyrotron anode modulation of the Electron Cyclotron Resonant Heating (ECRH) from dc to 50 kHz on the Tandem Mirror Experiment-Upgrade (TMX-U)
This paper describes control of gyrotron microwave energy output by modulation of gyrotron anode voltage. At present, Electron Cyclotron Resonant Heating (ECRH) uses five gyrotrons on the Tandem Mirror Experiment-Upgrade (TMX-U) for plasma heating. One is in the 10 kG region of each end plug, one at the 5 kG region of each end plug, and one is used for central-cell heating. Also described are the design and operation of the anode modulation system. The operating advantages of gyrotron anode modulation include power balance, independent control of each gyrotron, an ability to modulate microwave output power up to 50 kHz, and gyrotron tuning. The performance results of anode modulation will be discussed. 9 figs.
Date:
November 11, 1985
Creator:
Williams, C. W.; Heefner, J. W. & Rupert, R. R.
Object Type:
Article
System:
The UNT Digital Library
Description of the Plasma Potential Control (PPC) System on the Tandem Mirror Experiment-Upgrade (TMX-U)
A set of 18 separately controlled plates have been added to each end of the Tandem Mirror Experiment Upgrade (TMX-U) vessel to allow measurement of end-wall currents and to provide a means of plasma potential control (PPC). These plates are shaped to form elliptical rings separated into quadrants. Each plate can be individually grounded, float at plasma potentials, or be actively biased to control the plasma. Voltage and current monitoring are provided for each of the plates, and the control and monitoring functions are controlled by the PPC system computer. The details of the field line mapping and the plate shapes are discussed, and the control architecture and performance are presented. 1 ref., 5 figs.
Date:
November 11, 1985
Creator:
Surrena, P.S. & Underwood, R.H.
Object Type:
Article
System:
The UNT Digital Library
[News Clip: Brockway]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
January 11, 1985, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Volunteer connection]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
January 11, 1985, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library