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70 Matching Results
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Thulium-170 heat source
An isotopic heat source is formed using stacks of thin individual layers of a refractory isotopic fuel, preferably thulium oxide, alternating with layers of a low atomic weight diluent, preferably graphite. The graphite serves several functions: to act as a moderator during neutron irradiation, to minimize bremsstrahlung radiation, and to facilitate heat transfer. The fuel stacks are inserted into a heat block, which is encased in a sealed, insulated and shielded structural container. Heat pipes are inserted in the heat block and contain a working fluid. The heat pipe working fluid transfers heat from the heat block to a heat exchanger for power conversion. Single phase gas pressure controls the flow of the working fluid for maximum heat exchange and to provide passive cooling.
Date:
September 6, 1990
Creator:
Walter, Carl E.; Van Konynenburg, Richard & VanSant, James H.
Object Type:
Report
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 82, No. 36, Ed. 1 Thursday, September 6, 1990
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
September 6, 1990
Creator:
Reynolds, Jim
Object Type:
Newspaper
System:
The Portal to Texas History
A high resolution capacitive imaging sensor for manufacturing applications
A high resolution capacitive image sensing technique for measuring edge and surface profiles during manufacturing processes has been invented. A prototype device utilizing this technique consists of two 0.020 in. (500 {mu}m) diameter electrodes fabricated on a printed circuit board with a 0.010 in. (250 {mu}m) gap between them. As the device is mechanically scanned over the workpiece, the spatial variations in the edge or surface to be measured interfere with an electric field imposed between the electrodes, altering the mutual capacitance. The sensor functions as a near field proximity sensor producing range images of surface imperfections. This sensor has been used in applications requiring a preview image of burrs on the edge of a machined part and other processes requiring an inspection image after automated deburring operations. 10 refs., 8 figs.
Date:
September 6, 1990
Creator:
Novak, J. L. & Wiczer, J. J.
Object Type:
Article
System:
The UNT Digital Library
Design of Long Induction Linacs
A self-consistent design strategy for induction linacs is presented which addresses the issues of brightness preservation against space charge induced emittance growth, minimization of the beam breakup instability and the suppression of beam centroid motion due to chromatic effects (corkscrew) and misaligned focusing elements. A simple steering algorithm is described that widens the effective energy bandwidth of the transport system.
Date:
September 6, 1990
Creator:
Caporaso, G.J. & Cole, A.G.
Object Type:
Article
System:
The UNT Digital Library
Cherokeean/Herald (Rusk, Tex.), Vol. 142, No. 31, Ed. 1 Thursday, September 6, 1990
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
September 6, 1990
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Attorney General Opinion: LO90-59
Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification.
Date:
September 6, 1990
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Thulium-170 heat source
An isotopic heat source is formed using stacks of thin individual layers of a refractory isotopic fuel, preferably thulium oxide, alternating with layers of a low atomic weight diluent, preferably graphite. The graphite serves several functions: to act as a moderator during neutron irradiation, to minimize bremsstrahlung radiation, and to facilitate heat transfer. The fuel stacks are inserted into a heat block, which is encased in a sealed, insulated and shielded structural container. Heat pipes are inserted in the heat block and contain a working fluid. The heat pipe working fluid transfers heat from the heat block to a heat exchanger for power conversion. Single phase gas pressure controls the flow of the working fluid for maximum heat exchange and to provide passive cooling.
Date:
September 6, 1990
Creator:
Walter, C. E.; Van Konynenburg, R. & VanSant, J. H.
Object Type:
Report
System:
The UNT Digital Library
Electrical safety device
This invention consists of an electrical safety device for use in power tools that is designed to automatically discontinue operation of the power tool upon physical contact of the tool with a concealed conductive material. A step down transformer is used to supply the operating power for a disconnect relay and reset delay. When physical contact is made between the power tool and the conductive material, an electrical circuit through the disconnect relay is completed and the operation of the power tool is automatically interrupted. Once the contact between the tool and conductive material is broken, the power tool can be quickly and easily reactivated by a reset push button activating the reset relay. A remote reset is provided for convenience and efficiency of operation.
Date:
September 6, 1990
Creator:
White, D. B.
Object Type:
Patent
System:
The UNT Digital Library
San Antonio Register (San Antonio, Tex.), Vol. 59, No. 21, Ed. 1 Thursday, September 6, 1990
Weekly newspaper from San Antonio, Texas that includes local, state, and national news along with advertising.
Date:
September 6, 1990
Creator:
Glosson, Edwin
Object Type:
Newspaper
System:
The Portal to Texas History
[Press release: Commission Examines Public Health System Response to HIV/AIDS Epidemic]
A press release from the National Commission on Acquired Immune Deficiency Syndrome evaluating the impact of the HIV/AIDS epidemic on the U.S. public health infrastructure.
Date:
September 6, 1990
Creator:
National Commission on Acquired Immune Deficiency Syndrome
Object Type:
Text
System:
The UNT Digital Library
[News Clip: Outdoors]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 6, 1990, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Heat]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 6, 1990, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Mass Transit]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 6, 1990, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Fish Sting]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 6, 1990, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), No. 36, Ed. 1 Thursday, September 6, 1990
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
September 6, 1990
Creator:
Lobpries, F. Mike & Lobpries, Fran
Object Type:
Newspaper
System:
The Portal to Texas History
The North Texas Daily (Denton, Tex.), Vol. 74, No. 7, Ed. 1 Thursday, September 6, 1990
Student newspaper from the University of North Texas in Denton, Texas that includes local, state, national, and campus news along with advertising. Formerly The Campus Chat.
Date:
September 6, 1990
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Teague Chronicle (Teague, Tex.), Vol. [84], No. 14, Ed. 1 Thursday, September 6, 1990
Weekly newspaper from Teague, Texas that includes local, state, and national news along with advertising.
Date:
September 6, 1990
Creator:
Massey, Steve
Object Type:
Newspaper
System:
The Portal to Texas History
Dublin Progress (Dublin, Tex.), Vol. 103, No. 13, Ed. 1 Thursday, September 6, 1990
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
September 6, 1990
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Interview with Dr. Henry Speck and Dr. Jabr Al-Atrash, September 6, 1990
Interview with Dr. Henry Speck, ACU History professor, and Dr. Jabr Al-Atrash, former Syrian Ambassador. In the interview, they discuss recent events in the middle east.
Date:
September 6, 1990
Creator:
Speck, Henry; Al-Atrash, Jabr & McCaleb, Gary
Object Type:
Video
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 108, No. 71, Ed. 1 Thursday, September 6, 1990
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
September 6, 1990
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 100, No. 36, Ed. 1 Thursday, September 6, 1990
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
September 6, 1990
Creator:
Ezzell, Ben & Ezzell, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
The Bastrop Advertiser (Bastrop, Tex.), Vol. 137, No. 55, Ed. 1 Thursday, September 6, 1990
Semi-weekly newspaper from Bastrop, Texas that includes local, state, and national news along with extensive advertising.
Date:
September 6, 1990
Creator:
McAuley, Davis
Object Type:
Newspaper
System:
The Portal to Texas History
The Odem-Edroy Times (Odem, Tex.), Vol. 41, No. 36, Ed. 1 Thursday, September 6, 1990
Weekly newspaper from Odem, Texas that includes local, state, and national news along with advertising.
Date:
September 6, 1990
Creator:
Ketcham, Cheryl
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record and Bosque County Tribune (Clifton, Tex.), Vol. 95, No. 36, Ed. 1 Thursday, September 6, 1990
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
September 6, 1990
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History