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High-energy-overcurrent protective device (open access)

High-energy-overcurrent protective device

Electrical loads connected to capitance elements in high voltage direct current systems are protected from damage by capacitance discharge overcurrents by connecting between the capacitance element and the load, a longitudinal inductor comprising a bifilar winding wound about a magnetic core, which forms an incomplete magnetic circuit. A diode is connected across a portion of the bifilar winding which conducts a unidirectional current only. Energy discharged from the capitance element is stored in the inductor and then dissipated in an L-R circuit including the diode and the coil winding. Multiple high voltage circuits having capacitance elements may be connected to loads through bifilar windings all wound about the aforementioned magnetic core.
Date: May 18, 1981
Creator: Praeg, W. F.
Object Type: Patent
System: The UNT Digital Library

[Photograph 2012.201.B0322.0252]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Marc Kaplan and Dog cruised into Oklahoma City Monday looking for a place to stay while they encouraged citizens to donate money to the American Cancer Soci-ety."
Date: May 18, 1981
Creator: Tullous, Don
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0270.0609]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Elizabeth Hummel, 8, concentrates on pitch."
Date: May 18, 1981
Creator: McDaniel, David
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0139.0117]

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Mrs. Frank S. Thompson, Mrs. Albert Cole, Mrs. Carl Grant."
Date: May 18, 1981
Creator: Tullous, Don
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0270.0610]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Elizabeth and Victoria Hummel are ready to play."
Date: May 18, 1981
Creator: McDaniel, David
Object Type: Photograph
System: The Gateway to Oklahoma History
Optimizing the heat pipe for operation in a magnetic field when liquid-metal working fluids are used (open access)

Optimizing the heat pipe for operation in a magnetic field when liquid-metal working fluids are used

A novel method for reducing the magnetohydrodynamic (MHD) pressure drops in the liquid metal flow in a heat pipe wick is described. By flattening the heat pipe, the eddy current return path in the metallic heat pipe wall is inreased significantly, thereby increasing the effective wall resistance. This, in turn, reduces the magnitude of the MHD pressure drop. The same principle can also be applied to flows of liquid metal coolants in a magnetic field.
Date: May 18, 1981
Creator: Werner, R. W. & Hoffman, M. A.
Object Type: Report
System: The UNT Digital Library
Molecular potentials and relaxation dynamics (open access)

Molecular potentials and relaxation dynamics

The use of empirical pseudopotentials, in evaluating interatomic potentials, provides an inexpensive and convenient method for obtaining highly accurate potential curves and permits the modeling of core-valence correlation, and the inclusion of relativistic effects when these are significant. Recent calculations of the X/sup 1/..sigma../sup +/ and a/sup 3/..sigma../sup +/ states of LiH, NaH, KH, RbH, and CsH and the X/sup 2/..sigma../sup +/ states of their anions are discussed. Pseudopotentials, including core polarization terms, have been used to replace the core electrons, and this has been coupled with the development of compact, higly-optimized basis sets for the corresponding one- and two-electron atoms. Comparisons of the neutral potential curves with experiment and other ab initio calculations show good agreement (within 1000 cm/sup -1/ over most of the potential curves) with the difference curves being considerably more accurate. In the method of computer molecular dynamics, the force acting on each particle is the resultant of all interactions with other atoms in the neighborhood and is obtained as the derivative of an effective many-body potential. Exploiting the pseudopotential approach, in obtaining the appropriate potentials may be very fruitful in the future. In the molecular dynamics example considered here, the conventional sum-of-pairwise-interatomic-potentials (SPP) approximation is …
Date: May 18, 1981
Creator: Karo, A.M.
Object Type: Article
System: The UNT Digital Library
[News Clip: Teacher burnout] captions transcript

[News Clip: Teacher burnout]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Mesquite Pinball] captions transcript

[News Clip: Mesquite Pinball]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Mobile homes] captions transcript

[News Clip: Mobile homes]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Pinball/Rule] captions transcript

[News Clip: Pinball/Rule]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Plastics fire] captions transcript

[News Clip: Plastics fire]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Deseg] captions transcript

[News Clip: Deseg]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Hospital security] captions transcript

[News Clip: Hospital security]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Gay church] captions transcript

[News Clip: Gay church]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library

[Photograph 2012.201.B0974B.0829]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Northbound I-35 traffic funnels into one lane at Memorial Road this morning as contractors began preparing for upgrading the roadway to interstate standards."
Date: May 18, 1981
Creator: Albright, Bob
Object Type: Photograph
System: The Gateway to Oklahoma History
[News Clip: Exxon] captions transcript

[News Clip: Exxon]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Prime rate] captions transcript

[News Clip: Prime rate]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Colonial follow] captions transcript

[News Clip: Colonial follow]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981, 5:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Police recruits] captions transcript

[News Clip: Police recruits]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 18, 1981
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
Jacksboro Gazette-News (Jacksboro, Tex.), Vol. 102, No. 1, Ed. 1 Monday, May 18, 1981 (open access)

Jacksboro Gazette-News (Jacksboro, Tex.), Vol. 102, No. 1, Ed. 1 Monday, May 18, 1981

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.
Date: May 18, 1981
Creator: McGee, Leigh
Object Type: Newspaper
System: The Portal to Texas History
Sulphur Springs News-Telegram (Sulphur Springs, Tex.), Vol. 103, No. 117, Ed. 1 Monday, May 18, 1981 (open access)

Sulphur Springs News-Telegram (Sulphur Springs, Tex.), Vol. 103, No. 117, Ed. 1 Monday, May 18, 1981

Daily newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.
Date: May 18, 1981
Creator: Keys, Clarke
Object Type: Newspaper
System: The Portal to Texas History

[Photograph 2012.201.B0961.0727]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "A city worker prepares the base for one of the new sidewalks at City Hall."
Date: May 18, 1981
Creator: Albright, Bob
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B1078.0715]

Photograph used for a story in the Daily Oklahoman newspaper.
Date: May 18, 1981
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History