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567 Matching Results
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50th Anniversary, 1931-1981: symposium and banquet speeches
The proceedings includes talks given at the symposium and the banquet. They include examples of technology at the laboratory and speculation on the future at the laboratory. (GHT)
Date:
October 3, 1981
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Removable, hermetically-sealing, filter attachment system for hostile environments
A removable and reusable filter attachment system is disclosed. A filter medium is fixed to, and surrounded by, a filter frame having a coaxial, longitudinally extending, annular rim. The rim engages an annular groove which surrounds the opening of a filter housing. The annular groove contains a fusible material and a heating mechanism for melting the fusible material. Upon resolidifying, the fusible material forms a hermetic bond with the rim and groove. Remelting allows detachment and replacement of the filter frame.
Date:
June 3, 1981
Creator:
unknown
Object Type:
Patent
System:
The UNT Digital Library
High-voltage coaxial switch
A coaxial high voltage, high current switch having a solid cylindrical cold cathode coaxially surrounded by a thin hollow cylindrical inner electrode and a larger hollow cylindrical outer electrode is described. A high voltage trigger between the cathode and the inner electrode causes electrons to be emitted from the cathode and flow to the inner electrode preferably through a vacuum. Some of the electrons penetrate the inner electrode and cause a volumetric discharge in the gas (which may be merely air) between the inner and outer electrodes. The discharge provides a low impedance path between a high voltage charge placed on the outer electrode and a load (which may be a high power laser) coupled to the inner electrode. For high repetition rate the gas between the inner and outer electrodes may be continuously exchanged or refreshed under pressure.
Date:
June 3, 1981
Creator:
Rink, J. P.
Object Type:
Patent
System:
The UNT Digital Library
Raft River condenser-tube examination
In the program of development of a water treatment for the 5 MW Raft River power plants' carbon steel heat rejection system, four carbon steel tubes were analyzed in this batch. The results of visual and scanning electron microscope examination of the tubes are presented. (MHR)
Date:
April 3, 1981
Creator:
Suciu, D. F.
Object Type:
Report
System:
The UNT Digital Library
Downhole Steam Injector. [Patent Application]
An improved downhole steam injector has an angled water orifice to swirl the water through the device for improved heat transfer before it is converted to steam. The injector also has a sloped diameter reduction in the steam chamber to throw water that collects along the side of the chamber during slant drilling into the flame for conversion to steam. In addition, the output of the flame chamber is beveled to reduce hot spots and increase efficiency, and the fuel-oxidant inputs are arranged to minimize coking.
Date:
June 3, 1981
Creator:
Donaldson, A. B. & Hoke, E.
Object Type:
Patent
System:
The UNT Digital Library
New Mexico's energy resources '81. Annual report of Bureau of Geology in the Mining and Minerals Division of New Mexico Energy and Minerals Department
Although production of U/sub 3/O/sub 8/ declined only slightly in 1980, New Mexico's share of domestic production has declined from 48% in 1976 to 35% in 1980. Production projections indicate a continued decline in 1981 and lower production until at least 1984. New Mexico has 41% of total domestic reserves producible in the $50-per-lb cost category. In keeping with the anticipated steady depletion of reserves, production of crude oil in New Mexico was 69.9 million bls, a 6.3% decline in production from 1979. Condensate production of 5.4 million bbls in 1980, however, represented an increase of 7% from 1979 production. Although natural gas production was the lowest since 1970 and declined by 2.6% from 1979 production, 1980 was the 15th year that production exceeded 1 trillion cu ft. Despite declines in production, the valuation of oil and gas production has increased significantly with oil sales doubling from the previous year and gas sales increasing by $409 million because of higher prices. Reserves have been estimated to be 959 million bbls of crude oil and 17.667 trillion cu ft of natural gas. Production of 19.5 million short tons of coal in 1980 represented a 33% increase over 1979 production and an …
Date:
September 3, 1981
Creator:
Arnold, E. C. & Hill, J. M. (comps.)
Object Type:
Report
System:
The UNT Digital Library
Control of temperature and heat flux in a combustor using coal-derived gas of varying heat content. [Patent application]
The present invention is directed to a fuel-air control system for a combustor in which coal-derived gas of varying heat content is used. To maintain the temperature in the combustor at an essentially constant value the fuel-to-air ratio is adjusted by using a temperature actuated variable pressure regulator in the gas feed line to compensate for the variability of the heat content of the gas. The velocity of the products of combustion is maintained at an essentially constant flow rate by controlling the mass flow of the air and fuel through linked valves on the gas and air feed lines.
Date:
June 3, 1981
Creator:
Loth, John L.; Nakaishi, Curtis V.; Carpenter, Larry K. & Bird, Jimmie D.
Object Type:
Patent
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 73, No. 49, Ed. 1 Thursday, December 3, 1981
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
December 3, 1981
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 73, No. 36, Ed. 1 Thursday, September 3, 1981
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
September 3, 1981
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
AFR spent-fuel-storage program. Technical progress report, April 1981-June 1981
Work on this project is focused on developing design and licensing information for the model facility. Final deliverables were prepared this period to submit to DOE for the licensing and high-density rack sub-tasks. DOE revised and reduced the scope of the 1981 AFR contract in June of 1981. Work is progressing satisfactorily to close out the remaining tasks under the revised scope by September 30, 1981.
Date:
August 3, 1981
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
[Minutes for the TXSSAR Board of Managers Meeting: October 3, 1981]
Minutes from a meeting of the TXSSAR Board of Managers, held on October 3, 1981, in Houston, Texas, including a summary of activities and business discussed. The meeting was called to order and presided by President Kenneth E. Ingram, with the invocation given by Chaplain A. J. Frank.
Date:
October 3, 1981
Creator:
Sons of the American Revolution. Texas Society.
Object Type:
Text
System:
The UNT Digital Library
Vacuum system for Advanced Test Accelerator
The Advanced Test Accelerator (ATA) is a pulsed linear electron beam accelerator designed to study charged particle beam propagation. ATA is designed to produce a 10,000 amp 50 MeV, 70 ns electron beam. The electron beam acceleration is accomplished in ferrite loaded cells. Each cell is capable of maintaining a 70 ns 250 kV voltage pulse across a 1 inch gap. The electron beam is contained in a 5 inch diameter, 300 foot long tube. Cryopumps turbomolecular pumps, and mechanical pumps are used to maintain a base pressure of 2 x 10/sup -6/ torr in the beam tube. The accelerator will be installed in an underground tunnel. Due to the radiation environment in the tunnel, the controlling and monitoring of the vacuum equipment, pressures and temperatures will be done from the control room through a computer interface. This paper describes the vacuum system design, the type of vacuum pumps specified, the reasons behind the selection of the pumps and the techniques used for computer interfacing.
Date:
September 3, 1981
Creator:
Denhoy, B.S.
Object Type:
Article
System:
The UNT Digital Library
Plasmas in particle accelerators: adiabatic theories for bunched beams
Three different formalisms for discussing Vlasov's equation for bunched beam problems with anharmonic space charge forces are outlined. These correspond to the use of a drift kinetic equation averaged over random betatron motions; a fluidkinetic adiabatic regime analogous to the theory of Chew, Goldberger, and Low; and an adiabatic hydrodynamic theory.
Date:
March 3, 1981
Creator:
Mark, J.W.K.
Object Type:
Report
System:
The UNT Digital Library
Relationship of brain imaging with radionuclides and with x-ray computed tomography
Because of high sensitivity and specificity for altered local cerebral structure, x-ray computed tomography (CT) is the preferred initial diagnostic imaging study under most circumstances when cerebral disease is suspected. CT has no competitor for detecting fresh intracerebral hemorrhage. Radionuclide imaging (RN) scan is preferred when relative perfusion is to be assessed, in patients allergic to contrast media, and when an adequate CT study is not technically possible. (RN) plays an important complementary role to CT, especially for patients suspected of subacute or chronic subdura hematoma, cerebral infarction, arteriovenous malformations, meningitis, encephalitis, normal pressure hydrocephalus, or when CT findings are inconclusive. When CT is not available, RN serves as a good screening study for suspected cerebral tumor, infection, recent infarction, arteriovenous malformation, and chronic subdural hematoma. Future improvement in radionuclide imaging by means of emission composition potential. The compound plating approacl threshold for all the investigated transistors and fast neutron spectra lies within the raal. The value of the potential slightly changes with the coordinate change in this region, i.e. the charge on a collecting electrode is not practically guided up to a certain moment of time during the movement of nonequilibrium carriers.
Date:
March 3, 1981
Creator:
Kuhl, D.E.
Object Type:
Report
System:
The UNT Digital Library
ATA injector-gun calculations
ATA is a pulsed, 50 ns 10 KA, 50 MeV linear induction electron accelerator at LLNL. The ETA could be used as an injector for ATA. However the possibility of building a new injector gun for ATA, raised the question as to what changes from the ETA gun in electrode dimensions or potentials, if any, should be considered. In this report the EBQ code results for the four electrode configurations are reviewed and an attempt is made to determine the geometrical scaling laws appropriate to these ETA type gun geometries. Comparison of these scaling laws will be made to ETA operation. The characteristic operating curves for these geometries will also be presented and the effect of washer position determined. It will be shown that emittance growth will impose a limitation on beam current for a given anode potential before the virtual cathode limit is reached.
Date:
August 3, 1981
Creator:
Paul, A.C.
Object Type:
Report
System:
The UNT Digital Library
Survey of toxicity and carcinogenity of mineral deposits
The toxicities and biogeochemical cycles of arsenic, cadmium, chromium, lead and nickel are reviewed in some detail, and other trace elements briefly mentioned. These heavy metals are used as a framework within which the problem of low-level radioactive waste disposal can be compared. (ACR)
Date:
November 3, 1981
Creator:
Furst, A. & Harding-Barlow, I.
Object Type:
Report
System:
The UNT Digital Library
Fuel system and structural alloy considerations for space nuclear reactor systems
Sufficient data exist to provide a high level of confidence that refractory-alloy-clad ceramic fuel pins and refractory structural alloys can be used successfully in an operational space power system. However, data are not yet sufficient to ensure that these materials can meet the temperature, lifetime, and system mass envelope requirements for reliable operation of a 100 kW(e) system as specified by the SP-100 Project. Development efforts to provide these data are being initiated.
Date:
May 3, 1981
Creator:
Hoffman, E.E. & Cooper, R.H. Jr.
Object Type:
Article
System:
The UNT Digital Library
Plasmas in particle accelerators: adiabatic theories for bunched beams
Three different formalisms for discussing Vlasov's equation for bunched beam problems with anharmonic space charge forces are outlined. These correspond to the use of a drift kinetic equation averaged over random betatron motions; a fluidkinetic adiabatic regime analogous to the theory of Chew, Goldberger, and Low; and an adiabatic hydrodynamic theory.
Date:
March 3, 1981
Creator:
Mark, J.W.K.
Object Type:
Report
System:
The UNT Digital Library
Demonstrate fuel disassembly/encapsulation. Technical progress report, April 1981-June 1981
Work on this project is focused on demonstrating disassembly and encapsulation of nuclear fuels as a means to increase spent fuel storage. The effort commenced on April 17, 1980, and is progressing satisfactorily. The Equipment/Procedure Preparation sub-task is essentially complete. The Equipment Demonstration sub-task and the Process Assessment Studies sub-task continue. The equipment design effort associated with the first sub-task, the component testing and checking associated with the second sub-task, and the technical studies and investigations associated with the latter sub-task continue to verify the feasibility of this concept to enhance the use of fuel storage resources.
Date:
August 3, 1981
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Mathematical models for the EPIC code
EPIC is a fluid/envelope type computer code designed to study the energetics and dynamics of a high energy, high current electron beam passing through a gas. The code is essentially two dimensional (x, r, t) and assumes an axisymmetric beam whose r.m.s. radius is governed by an envelope model. Electromagnetic fields, background gas chemistry, and gas hydrodynamics (density channel evolution) are all calculated self-consistently as functions of r, x, and t. The code is a collection of five major subroutines, each of which is described in some detail in this report.
Date:
June 3, 1981
Creator:
Buchanan, H.L.
Object Type:
Report
System:
The UNT Digital Library
Calculated nuclide compositions and gamma-ray exposure rates for fallout from the HARRY, SMOKY, and ANNIE events
The results of computer calculations of the nuclide composition and associated external gamma-ray exposure rates for fallout from the HARRY, SMOKY, and ANNIE events are documented. The fission product distribution is calculated for each event with the appropriate neutron spectrum and the fractions of fissions due to each fissionable material. Also calculated are the total number of microcuries per square meter and the gamma-ray exposure rates (mR/h, 1 meter above ground level) for the 152 fission products and 25 neutron-induced nuclides. The normalized data are presented in 9 Appendices. (DLS)
Date:
March 3, 1981
Creator:
Hicks, Harry G.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Farmers market]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
July 3, 1981, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Clean Dallas]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
December 3, 1981, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Bates punish]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 3, 1981, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library