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493 Matching Results

Start Over Access Open Access Year 1984 Day 26th Language English

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(open access)

Conspray dynamic sleeve piston coal feeder. Phase II. Verification tests. Final technical report

This report details the performance of Phase II: Verification Tests of the Conspray dynamic sleeve piston coal feeder. The machine performed for 200 hours at 700 psi backpressure, utilizing a 70% to 200 mesh Utah bituminous coal as feedstock. All test work was satisfactorily completed. A post-test inspection was performed. A report of component wear and failures incurred in testing is included as well as suggestions for machine upgrades. The overall conclusion is that the dynamic sleeve piston feeder has proven its ability to operate safely and reliably. When problems have occurred, the machine has demonstrated inherent safety by shutting down without endangering process or personnel. With the recommended improvements incorporated into the feeder, the unit will be ready for installation on a pilot scale coal gasifier. 9 figures, 11 tables.

Date: January 26, 1984

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

The Tulia Herald (Tulia, Tex.), Vol. 76, No. 4, Ed. 1 Thursday, January 26, 1984

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

Date: January 26, 1984

Creator: Tooley, Wendell

Object Type: Newspaper

System: The Portal to Texas History

(open access)

The Tulia Herald (Tulia, Tex.), Vol. 76, No. 30, Ed. 1 Thursday, July 26, 1984

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

Date: July 26, 1984

Creator: Tooley, Wendell

Object Type: Newspaper

System: The Portal to Texas History

(open access)

The Tulia Herald (Tulia, Tex.), Vol. 76, No. 17, Ed. 1 Thursday, April 26, 1984

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

Date: April 26, 1984

Creator: Tooley, Wendell

Object Type: Newspaper

System: The Portal to Texas History

captions transcript

[News Clip: Double Homicide]

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

Date: August 26, 1984, 5:00 p.m.

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

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Jewish day]

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

Date: September 26, 1984, 10:00 p.m.

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

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Wildcatter]

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

Date: November 26, 1984, 6:00 p.m.

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

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: La Petite]

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

Date: October 26, 1984, 6:00 p.m.

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

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Grocery bag]

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

Date: October 26, 1984, 5:00 p.m.

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

Object Type: Video

System: The UNT Digital Library

(open access)

Recent progress at RTNS-II

The Rotating Target Neutron Source (RTNS-II) facility produces 14-MeV neutrons for materials damage studies. Initial operation for irradiations, which occurred in 1979, began with a neutron source strength of 10/sup 13/ n/s utilizing one of the accelerator-based neutron sources. Details are given on improvements which have resulted in both increased neutron production and neutron source strength and improved control and monitoring. 8 references.

Date: September 26, 1984

Creator: Heikkinen, D.W. & Logan, C.M.

Object Type: Article

System: The UNT Digital Library

(open access)

KOVEC studies of radioisotope thermoelectric generator response (In connection with possible NASA space shuttle accident explosion scenarios)

The Department of Energy (DOE) commissioned a study leading to a final report (NUS-4543, Report of the Shuttle Transportation System (STS) Explosion Working Group (EWG), June 8, 1984), concerned with PuO/sub 2/ dispersal should the NASA space shuttle explode during the proposed Galileo and ISPN launches planned for 1986. At DOE's request, LLNL furnished appendices that describe hydrocode KOVEC calculations of potential damage to the Radioisotope Thermoelectric Generators, fueled by PuO/sub 2/, should certain explosion scenarios occur. These appendices are contained in this report.

Date: June 26, 1984

Creator: Walton, J.; Weston, A. & Lee, E.

Object Type: Report

System: The UNT Digital Library

(open access)

Thermal barrier confinement experiments in the TMX-U tandem mirror

In our recent experiments on the TMX-U thermal-barrier device, we achieved the end plugging of axial ion losses up to a central cell density of n/sub c/ = 6 x 10/sup 12/ cm/sup -3/. During lower density experiments, we measured the axial potential profile characteristic of a thermal barrier and found an ion-confining potential greater than 1.5 kV and a potential depression of 0.45 kV in the barrier region. The average beta of hot end plug electrons has reached 15% and of hot central cell ions has reached 6%. In addition, we heated deuterium ions in the central cell with ICRF to an average perpendicular energy of 2 keV. During strong end plugging at low density (7 x 10/sup 11/ cm/sup -3/), the axial ion confinement time tau/sub parallel/ reached 50 to 100 ms while the nonambipolar radial ion confinement time tau/sub perpendicular/ was 14 ms - independent of end plugging. Electrically floating end walls increased the radial ion confinement time by a factor of 1.8. At higher densities and lower potentials, tau/sub parallel/ was 6 to 12 ms and tau/sub perpendicular/ exceeded 100 ms.

Date: July 26, 1984

Creator: Simonen, T. C.; Allen, S. L.; Baldwin, D. E.; Casper, T. A.; Clauser, J. F.; Coensgen, F. H. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

Results on neutrino-electron elastic scattering at AGS energies

In an experiment designed to study elastic scattering of nu/sub ..mu../ (and anti nu/sub ..mu../) from electrons and protons via the weak neutral current, we have recently completed several extensive data taking runs. Results for the cross section of nu/sub ..mu../ + e/sup -/ ..-->.. nu/sub ..mu../ + e/sup -/ are presented based upon the first third of the available sample. Preliminary analysis of anti nu/sub ..mu../ + e/sup -/ ..-->.. anti nu/sub ..mu../ + e/sup -/ is in progress and evidence for the signal is presented.

Date: February 26, 1984

Creator: Lanou, R. E.

Object Type: Report

System: The UNT Digital Library

(open access)

Insulating Geothermal Well Casings From Thermal Stress With Nitrogen Gas or Nitrogen Foam

Fenton Hill Hot Dry Rock Geothermal Site Well EE-3 was designed and completed to function as a completion of the reservoirs with the injection well, EE-2, progressed it become evident that it would be desirable to fracture in EE-3 as well to obtain a flow connection between the wells. Unfortunately, the 9-5/8'' od production casing in EE-3 had been pretensioned to 885,000 lbs to accommodate its intended service as a hot water production well. Cool-down of the casing was thus limited to only 11/sup 0/C (20/sup 0/F) to keep the stress in the top joints of the casing below the minimum yield stress, or else the pretension had to be released. Before incurring the risk and expense required to release the tension, fracturing experiments were performed to evaluate the use gaseous nitrogen and 75% quality nitrogen-gel foam as insulating media in an annular wellbore configuration, i.e., the nitrogen gas or foam was placed in the annular gap between the tubing string and the casing.

Date: August 26, 1984

Creator: Dreesen, D. S.; Murphy, H. D.; Zyvoloski, G.; McEligot, D. M.; Dash, Z. & Nicholson, R. N.

Object Type: Article

System: The UNT Digital Library

(open access)

Thermal barrier confinement experiments in TMX-U tandem mirror. Revision 1

In our recent experiments on the TMX-U thermal-barrier device, we achieved the end plugging of axial ion losses up to a central cell density of n/sub c/ = 6 x 10/sup 12/ cm/sup -3/. During lower density experiments, we measured the axial potential profile characteristic of a thermal barrier and found an ion-confining potential greater than 1.5 kV and a potential depression of 0.45 kV in the barrier region. The average beta of hot end plug electrons has reached 15% and of hot central cell ions has reached 6%. In addition, we heated deuterium ions in the central cell with ICRF to an average perpendicular energy of 2 keV. During strong end plugging at low density (7 x 10/sup 11/ cm/sup -3/), the axial ion confinement time tau/sub parallel to/ reached 50 to 100 ms while the nonambiopolar radial ion confinement time tau/sub perpendicular to/ was 14 ms - independent of end plugging. Electrically floating end walls doubled the radial ion confinement time. At higher densities and lower potentials, tau/sub parallel to/ was 6 to 12 ms and tau/sub perpendicular to/ exceeded 100 ms.

Date: July 26, 1984

Creator: Simonen, T. C.; Allen, S. L.; Baldwin, D. E.; Casper, T. A.; Clauser, J. F.; Coensgen, F. H. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

Ion source development at RTNS-II

Results are reported for an ongoing effort to optimize D/sup +/ beam production by the MATS-III ion source used at RTNS-II. The characteristics of the source have been determined. Particular attention was paid to the extraction geometry and plasma production. The plasma spatial and temporal uniformity has been examined. The seven aperture triode geometry has been varied to optimize neutron production. This includes beamlet steering and electrode gapping as well as aperture shaping. 4 references, 4 figures.

Date: September 26, 1984

Creator: Massoletti, D. & Heikkinen, D.W.

Object Type: Article

System: The UNT Digital Library

(open access)

High energy facilities advanced projects: intrabeam scattering for a beam of gold ions

This note presents the results for the effects of intrabeam scattering on the longitudinal and transverse beam dimensions for a beam of Au nuclei at various energies corresponding to ..gamma.. = 5 to ..gamma.. = 100, and for time periods of up to 10 hours. Intrabeam scattering is the scattering of the particles in the beam from each other through the Coulomb forces that act between each pair of particles. This causes the beam dimensions to grow both longitudinally and transversely, and results in requirements for the transverse aperture and the rf acceleration system. The beam growth also affects the collider performance, as the instantaneous luminosity will decrease with time.

Date: June 26, 1984

Creator: Parzen, G.

Object Type: Report

System: The UNT Digital Library