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387 Matching Results
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Enhanced durability and reactivity for zinc ferrite desulfurization sorbent
AMAX Research Development Center (AMAX R D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a bench-scale, fixed-bed reactor. Durability may be defined as the ability of the sorbent to maintain important physical characteristics such As size, strength, and specific surface area during 10 cycles of sulfidation and oxidation.
Date:
May 2, 1989
Creator:
Jha, M. C. & Berggren, M. H.
Object Type:
Report
System:
The UNT Digital Library
Enhanced Durability and Reactivity for Zinc Ferrite Desulfurization Sorbent
AMAX Research Development Center (AMAX R D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a bench-scale, fixed-bed reactor. Durability may be defined as the ability of the sorbent to maintain important physical characteristics such as size, strength, and specific surface area during 10 cycles of sulfidation and oxidation.
Date:
May 2, 1989
Creator:
Silaban, A. & Harrison, D.P.
Object Type:
Report
System:
The UNT Digital Library
Thermal Regimes of Major Volcanic Centers: Magnetotelluric Constraints
The interpretation of geophysical/electromagnetic field data has been used to study dynamical processes in the crust beneath three of the major tectono-volcanic features in North America: the Long Valley/Mono Craters Volcanic Complex in eastern California, the Cascades Volcanic Belt in Oregon, and the Rio Grande Rift in the area of Socorro, New Mexico. Primary accomplishments have been in the area of creating and implementing a variety of 2-D generalized inverse computer codes, and the application of these codes to fields studies on the basin structures and he deep thermal regimes of the above areas. In order to more fully explore the space of allowable models (i.e. those inverse solutions that fit the data equally well), several distinctly different approaches to the 2-D inverse problem have been developed: (1) an overdetermined block inversion; (2) an overdetermined spline inverstion; (3) a generalized underdetermined total inverse which allows one to tradeoff certain attributes of their model, such as minimum structure (flat models), roughness (smooth models), or length (small models). Moreover, we are exploring various approaches for evaluating the resolution model parameters for the above algorithms. 33 refs.
Date:
October 2, 1989
Creator:
Hermance, J. F.
Object Type:
Report
System:
The UNT Digital Library
[Memorandum from Richard L. Simms to Donald E. Chipman, November 2, 1989]
Letter from Richard L. Simms to Donald E. Chipman, on November 2, 1989, discussing finding Julian C. Stanley and his wife a place to stay during their visit to Denton, during which Stanley will teach a class on gifted children.
Date:
November 2, 1989
Creator:
Simms, Richard L.
Object Type:
Letter
System:
The UNT Digital Library
[Memorandum from Jim Miller to Rogers Redding, February 2, 1989]
Memo from Jim Miller to Rogers Redding, on February 2, 1989, sending him a letter from Julian C. Stanley and Ann Lupkowski, who offer suggestions for a Study of Mathematically Precocious Youths at the University of North Texas.
Date:
February 2, 1989
Creator:
Miller, James R.
Object Type:
Letter
System:
The UNT Digital Library
The relation of electrode voltages to charge position in SLC arc and final focus beam position monitors
The position of a charged particle beam can be measured with a Beam Position Monitor (BPM) by converting the voltages induced on its array of electrodes into a position offset from the array's center. Most of the BPMs in the Arcs and Final Focus of the SLC use four stripline electrodes arranged symmetrically around the beam; normalized voltage differences are calculated as the difference divided by the sum of voltages on opposite electrode pairs. The resulting number is multiplied by a conversion factor, denoted in this paper as S{sub b}, to give the offset (in millimeters) of the charge from the center of the BPM. Prior to installation in the beam line, the BPMs were calibrated with a charge pulse on a rod. Owing to geometric effects which will be discussed later, a different conversion factor had to be used for calibration. It will be denoted here by S{sub r}. This paper gives the results of calculations and measurements of S{sub r} and S{sub b} for Arc and Final Focus BPMs. This paper also describes the relevant physical properties of the several types of BPMs and calculations of the expected scale factors, the measurement methods used, and gives the results …
Date:
November 2, 1989
Creator:
Fordham, C.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Op rescue]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, several Pro-Life supporters rallying around an area, singing, praying, marching, and holding posters. This story aired at 6pm.
Date:
December 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: X-mas parade]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, footage of a Christmas parade in a downtown area showing members of the parade marching down the street and large crowds watching them pass by. This story aired at 10pm.
Date:
December 2, 1989, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Justice]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a news story by reporter Sherry Woodard about Randall Dale Adams who was released from jail after 12 years for false accusation and other victims of the criminal justice system. This story aired at 10pm.
Date:
December 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Shooting Folo]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date:
November 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: X-mas parade]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a Christmas parade in Dallas. This story aired at 6pm.
Date:
December 2, 1989, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Caesar's]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering footage of Caesar's pizza giving out food to the homeless. This story aired at 10pm.
Date:
January 2, 1989, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: AIDS clinic]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas about an AIDS clinic being moved out after losing funding. This story aired at 10pm.
Date:
December 2, 1989, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Surveillance]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date:
August 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: SMU Fans / Heat]
None
Date:
September 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Acid Stickers]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date:
October 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Church Shooting]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date:
October 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Mercantile]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 5pm.
Date:
August 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Teenager Shot]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date:
March 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Clements]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date:
February 2, 1989, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: DPA Referendum]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 10pm.
Date:
March 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: AIDS Clinic]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a news story by reporter Jeff Eliasoph about an AIDS clinic called Oak Lawn Community Services tasked with reducing its staff and moving to a smaller location due to lower amounts of donations. Oak Lawn Community Services ran an AIDS hotline for callers to anonymously call. This story aired at 6pm.
Date:
December 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Rucker]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date:
October 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: P - DLS Mall]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date:
October 2, 1989
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library