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546
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275/sup 0/C thick-film hybrid microcircuitry fabrication technology
High-temperature electronics is needed for geothermal well-logging tools, jet engine monitors, nuclear reactor instruments, and fossil fuel exploration and production systems. The step-by-step fabrication technology of thick-film hybrids useful for at least 1000 hours at 275/sup 0/C is described. Hybrid technology, qualified to standard military specifications, was modified both in materials and fabrication processes to achieve this high-temperature operation. In addition to documenting this Sandia-developed technology, various alternate approaches are described to increase the versatility and applicability of these methods.
Date:
July 1, 1980
Creator:
Bonn, P.A. & Palmer, D.W.
Object Type:
Report
System:
The UNT Digital Library
[1st Thiele House, (Exterior)]
Photograph of the 1st Thiele House (located at 415 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[1st Thiele House, (Exterior)]
Photograph of the 1st Thiele House (located at 415 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[1st Thiele House, (Exterior)]
Photograph of the 1st Thiele House (located at 415 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[1st Thiele House, (Exterior)]
Photograph of the 1st Thiele House (located at 415 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[1st Thiele House, (Exterior)]
Photograph of the 1st Thiele House (located at 415 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[1st Thiele House, (Exterior)]
Photograph of the 1st Thiele House (located at 415 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[1st Thiele House, (Exterior)]
Photograph of the 1st Thiele House (located at 415 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[2012.201.B0051.0267]
Several people working to pull an aircraft from Fort Gibson Reservoir at a boat ramp. Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Who Was That Man? Onlookers hoist the wreckage of a stunt plane onto a loading ramp at the Fort Gibson Reservoir after its pilot Lonnie Garner, was critically injured when the plane crashed into the reservoir Monday."
Date:
July 29, 1980
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[2nd Thiele House, (Exterior)]
Photograph of the 2nd Thiele House (located at 411 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[2nd Thiele House, (Exterior)]
Photograph of the 2nd Thiele House (located at 411 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[2nd Thiele House, (Exterior)]
Photograph of the 2nd Thiele House (located at 411 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[2nd Thiele House, (Exterior)]
Photograph of the 2nd Thiele House (located at 411 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[2nd Thiele House, (Exterior)]
Photograph of the 2nd Thiele House (located at 411 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[2nd Thiele House, (NE Oblique)]
Photograph of the 2nd Thiele House (located at 411 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[2nd Thiele House, (NE(porch))]
Photograph of the 2nd Thiele House (located at 411 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[2nd Thiele House, (NW Oblique)]
Photograph of the 2nd Thiele House (located at 411 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[2nd Thiele House, (NW Oblique)]
Photograph of the 2nd Thiele House (located at 411 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[2nd Thiele House, (NW Oblique)]
Photograph of the 2nd Thiele House (located at 411 Sixth St) in San Antonio, Texas.
Date:
July 1, 1980
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
Acceleration of the inner iteration of the DOT-IV transport code using a new source correction scheme
A detailed description of the steady-state Boltzmann transport equation is given. Then the discrete ordinates method of solving the transport equation is described. The conventional rebalance method, the source correction scheme of rebalance, and a new source correction scheme involving a correction equation with a modified flow term are derived. Difference equations for each version of the source correction scheme are presented. The different versions of the source correction scheme and the conventional rebalance method are compared on several test problems in one- and two-dimensionl slab geometry. Results are shown that demonstrate that the new source correction scheme is superior to the conventional rebalance method. It is also seen that the new source correction scheme is compatible when used with a weighted difference formulation in the inner iteration of the transport solution. 6 figures, 9 tables.
Date:
July 1, 1980
Creator:
Aull, J.E.
Object Type:
Report
System:
The UNT Digital Library
Actinide-Specific Sequestering Agents and Decontamination Applications
We have briefly reviewed the biological hazards associated with the actinide elements. The most abundant transuranium element produced by both industrial nuclear power plants and nuclear weapons programs is plutonium. It is also potentially the most toxic - particularly due to its long-term hazard as a carcinogen if it is introduced into the body. This toxicity is due in large part to the chemical and biochemical similarities of Pu(IV) and Fe(III). Thus in mammals plutonium is transported and stored by the transport and storage systems for iron. This results in the concentration and long-term retention of an alpha-emitting radionuclide ({sup 239}Pu) at sites such as the bone marrow where cell division occurs at a high rate. The earliest attempts at removal of actinide contamination by chelation therapy were essentially heuristic in that sequestering agents known to be effective at binding other elements were tried with plutonium. The research described here is intended to be a rational approach that begins with the observation that since Fe(III) and Pu(IV) are so similar, and since microbes produce agents called siderophores that are extremely effective and selective sequestering agents for Fe(III), the construction of similar chelating agents for the actinides should be possible using …
Date:
July 1, 1980
Creator:
Smith, William L. & Raymond, Kenneth N.
Object Type:
Article
System:
The UNT Digital Library
ACTVE News, Volume 11, Number 7, July 1980
Newsletter issued by the Advisory Council for Technical-Vocational Education in Texas discussing news, events, and other relevant information related to technical and vocational education for adults in Texas.
Date:
July 1980
Creator:
Advisory Council for Technical-Vocational Education in Texas
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Adaptive signal processor
An experimental, general purpose adaptive signal processor system has been developed, utilizing a quantized (clipped) version of the Widrow-Hoff least-mean-square adaptive algorithm developed by Moschner. The system accommodates 64 adaptive weight channels with 8-bit resolution for each weight. Internal weight update arithmetic is performed with 16-bit resolution, and the system error signal is measured with 12-bit resolution. An adapt cycle of adjusting all 64 weight channels is accomplished in 8 ..mu..sec. Hardware of the signal processor utilizes primarily Schottky-TTL type integrated circuits. A prototype system with 24 weight channels has been constructed and tested. This report presents details of the system design and describes basic experiments performed with the prototype signal processor. Finally some system configurations and applications for this adaptive signal processor are discussed.
Date:
July 1, 1980
Creator:
Walz, H.V.
Object Type:
Report
System:
The UNT Digital Library
Advanced coal gasification system for electric power generation. Third quarterly progress report, April 1-June 30, 1980
The operation, maintenance and modifications to the Westinghouse gasification process development unit during the quarter are reviewed. The tests of the gasifier-agglomerator included direct coal feed as well as oxygen-blown gasification of a char or coal bed. Then the whole system was tested in single and double stage operation. Laboratory support involved fluidized bed test facilities at ambient temperature and at design temperature for devolatilization and gasification studies. Other laboratory systems were related to thermal analysis and pressurized high temperature studies of gasification and gas cleaning. (LTN)
Date:
July 25, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library