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438 Matching Results

Start Over Year 1983 Day 23rd Language English

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(open access)

Characterizing W-2 SLSF experiment temperature oscillations using computer graphics. [Sodium Loop Safety Facility]

The W-2 SLSF (Sodium Loop Safety Facility) experiment was an instrumented in-reactor test performed to characterize the failure response of full-length, preconditioned LMFBR prototypic fuel pins to slow transient overpower (TOP) conditions. Although the test results were expected to confirm analytical predictions of upper level failure and fuel expulsion, an axial midplane failure was experienced. Extensive post-test analyses were conducted to understand all of the unexpected behavior in the experiment. (1) The initial post-test effort focused on the temperature oscillations recorded by the 54 thermocouples used in the experiment. In order to synthesize the extensive data records and identify patterns of behavior in the data records, a computer-generated film was used to present the temperature data recorded during the experiment.

Date: June 23, 1983

Creator: Smith, D. E.

Object Type: Article

System: The UNT Digital Library

[Mike Richards at Desert Mountains, 1983]

A photograph of Mike Richards standing and resting his arm on a viewer in a desert mountain setting. Written on the back of the card is the date, "Feb. 23, 1983."

Date: February 23, 1983

Creator: unknown

Object Type: Photograph

System: The UNT Digital Library

(open access)

Collider detector beam line test table: a structural analysis

The apparatus which sweeps calorimeter and endwall modules through the beam during testing is called a beam line test table. Because of rather stringent requirements for the physical positioning of the modules an analysis is done here to determine the modifications to the current test table design which will minimize deflections of the table under load.

Date: December 23, 1983

Creator: Leininger, M.B.

Object Type: Report

System: The UNT Digital Library

(open access)

NOVANET: communications network for a control system

NOVANET is a control system oriented fiber optic local area network that was designed to meet the unique and often conflicting requirements of the Nova laser control system which will begin operation in 1984. The computers and data acquisition devices that form the distributed control system for a large laser fusion research facility need reliable, high speed communications. Both control/status messages and experimental data must be handled. A subset of NOVANET is currently operating on the two beam Novette laser system.

Date: May 23, 1983

Creator: Hill, J.R.; Severyn, J.R. & VanArsdall, P.J.

Object Type: Article

System: The UNT Digital Library

(open access)

Economic impact of an improved methanol catalyst. [Forecasting to 2000]

The economic future of methanol is reviewed in light of its potential uses as a substitute for traditional hydrocarbon fuels and feedstocks as well as some evolving new uses. Methanol's future market position will depend strongly on its production cost in comparison with competitive products. One promising way to reduce the production cost is by use of an improved catalyst in the process by which methanol is obtained from the feedstock - which can be either natural gas or a similar product such as synthesis gas from coal gasification. To estimate the potential cost savings with an improved catalyst, we have based our analysis on a recent study which assumed use of synthesis gas from underground coal gasification as a feedstock for making methanol. The improved catalyst we studied was an actinide oxide whose features include high tolerance to sulfur and heat, and a yield of about 4 mol% methanol per pass with a 2/1 mixture of H/sub 2//CO. We calculated the effect of this catalyst on methanol production costs in a 12,000-bbl/day plant. The result was a saving of from 1 cent to 2.5 cent per gallon on the total methanol synthesis cost of 23 cents per gallon (i.e., …

Date: June 23, 1983

Creator: Grens, J.; Borg, I.; Stephens, D. & Colmenares, C.

Object Type: Report

System: The UNT Digital Library

captions transcript

[News Clip: Oil Expo]

Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany a news story by reporter Dan White about low attendance at the grand opening of the Texas Oil and Gas Exposition. This story includes interviews with unidentified sales people and exhibitors. This story aired at 10:00 P.M.

Date: June 23, 1983

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

(open access)

/sup 238/PuO/sub 2/ fines generation in radioisotopic heat sources

Fuel aging studies were performed on the fuel form (plutonium-238 dioxide and yttrium) used in the Milliwatt Generator Radioisotopic Heat Source to determine the possibility of fuel degradation and of the resultant generation of respirable fines. In addition to long-term thermal aging of the fuel, evaluations included the effects of thermal ramping of the aged fuel to 1000/sup 0/C and of impacting thermally hot (450/sup 0/C) heat sources at 150 m/sec after thermal aging.

Date: June 23, 1983

Creator: Teaney, P. E.

Object Type: Report

System: The UNT Digital Library

(open access)

Optimized baffle and aperture placement in neutral beamlines

Most neutral beamlines contain an iron-core ion-bending magnet that requires shielding between the end of the neutralizer and this magnet. This shielding allows the gas pressure to drop prior to the beam entering the magnet and therefore reduces beam losses in this drift region. We have found that the beam losses can be reduced even further by eliminating the iron-core magnet and the magnetic shielding altogether. The required bending field can be supplied by current coils without the iron poles. In addition, placement of the baffles and apertures can affect the cold gas entering the plasma region and the losses in the neutral beam due to re-ionization. In our study we varied the placement of the baffles, which determine the amount of pumping in each chamber, and the apertures, which determine the beam loss. Our results indicate that a baffle/aperture configuration can be set for either minimum cold gas into the plasma region or minimum beam losses, but not both.

Date: November 23, 1983

Creator: Stone, R.; Duffy, T. & Vetrovec, J.

Object Type: Article

System: The UNT Digital Library

(open access)

Seismic monitoring at The Geysers Geothermal Field, California

Two distinct clusters of microearthquakes have been identified at The Geysers, possibly relating to two independent pressure sinks resulting from steam production described by Lipman, and others (1977). Unlike earthquakes in the Maacama-Rodgers Creek fault zone to the south and west, earthquakes at The Geysers are confined to depths of less than 5 km. The present level of seismicity at The Geysers appears to be higher than the preproduction level and is higher and more continuous than the seismicity in the surrounding region. Earthquakes in the steam production zone at The Geysers resemble earthquakes in the surrounding region with regard to focal plane solutions, source characteristics and magnitude distribution (b slope). Subtle differences in earthquake characteristics may be resolved by analysis of more extensive data now being gathered in the region.

Date: May 23, 1983

Creator: Marks, S. M.; Ludwin, R. S.; Louie, K. B. & Bufe, C. G.

Object Type: Report

System: The UNT Digital Library

(open access)

Measurement of critical temperature as a function of field

The critical temperature has been measured for various magnet conductors as a function of the perpendicular applied magnetic field. The isothermal environment was provided by a variable temperature cryostat which fits into the bore of a 10.0 tesla solenoid. The temperature gradient across the sample volume was measured to be less than 25 millikelvins. The superconducting the normal state transition was measured resistively, using sample current densities from 0.01 to 2 A/cm/sup 2/. The maximum applied magnetic field was 10.0 T and varied less than 0.5% in the sample volume. The critical transport current range of the samples measured was from tens to thousands of amperes in the presence of a 10.0 T perpendicular magnetic field at 4.2K.

Date: April 23, 1983

Creator: McInturff, A.D.; Ishibashi, K. & Heard, G.D.

Object Type: Report

System: The UNT Digital Library

(open access)

Leaching study of nuclear melt glass: Part I

Ground samples of three nuclear melt glasses from underground nuclear explosions at the Nevada Test Site (NTS) were leached at 25/sup 0/C with natural ground water from NTS. Using our dynamic single-pass flow-through leaching system we monitored the release of radionuclides from the glasses during 420 days of leaching. We continually flowed the ground water over the melt glass at flow rates of 185 ml/day for half of the samples and 34 ml/day for the rest. Leachate solutions were collected continuously, and composite samples, collected on days 1, 2, 3, 6, 11, 32, 38, 70, 120, 230 and 420, were analyzed using low-background Ge(Li) gamma spectrometers. For most of the radionuclides the leach rate decreased smoothly throughout the experiment. Except for /sup 95/Zr, /sup 144/Ce, and /sup 155/Eu, there was no difference between the fast (185 ml/day) and slow (34 ml/day) flow-rate leach rates. The measurable leach rates ranged from a high of 1 x 10/sup -2/ g-glass/m/sup 2/ day for /sup 22/Na (slow flow-rate, day 1 in glass No. 2) to a low of 1 x 6/sup -6/ g-glass/m/sup 2/ day for /sup 54/Mn (slow flow-rate, day 420 in glass No. 2). Most of the leach-rate values were about …

Date: February 23, 1983

Creator: Failor, R. A.; Coles, D. G. & Rego, J. A. H.

Object Type: Report

System: The UNT Digital Library

(open access)

Method of forming a thin unbacked metal foil

The present invention relates generally to metal foils and methods of making the same. More particularly, this invention pertains to the fabrication of very thin, unbacked metal foils.

Date: February 23, 1983

Creator: Duchane, D. V. & Barthell, B. L.

Object Type: Patent

System: The UNT Digital Library

captions transcript

[News Clip: Doctors]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: October 23, 1983, 5:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Unemployment series #1]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: February 23, 1983, 10:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Absenteeism]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: February 23, 1983, 6:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Boy Scouts]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: April 23, 1983, 10:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

(open access)

The Cherokeean. (Rusk, Tex.), Vol. 134, No. 19, Ed. 1 Thursday, June 23, 1983

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.

Date: June 23, 1983

Creator: unknown

Object Type: Newspaper

System: The Portal to Texas History

(open access)

Texas Register, Volume 8, Number 70, Pages 3771-3840, September 23, 1983

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

Date: September 23, 1983

Creator: Texas. Secretary of State.

Object Type: Journal/Magazine/Newsletter

System: The Portal to Texas History