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380 Matching Results
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[Letter from Cassandra Broadus to Janyce Greenwood, Febraury 19, 1991]
Photocopy of a letter from Cassandra Broadus, North Texas Institute for Educators on the Visual Arts, to Janyce Greenwood, teacher at Pilot Point Elementary School. In regards to Broadus's visitation to Greenwood's classroom. Broadus writes that she enjoyed working with Greenwood's students and seeing how they participate in their art lessons, however, Broadus would like to condense the time span by rearranging the workflow. Broadus says that she will visit the school again and bring materials that Greenwood could use in the classroom.
Date:
February 19, 1991
Creator:
Broadus, Cassandra
Object Type:
Letter
System:
The UNT Digital Library
Development of improved iron Fischer-Tropsch catalysts
The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date:
July 19, 1991
Creator:
Bukur, D.B.
Object Type:
Report
System:
The UNT Digital Library
Ground wave propagation of a video pulse source: Part 2
In a previous paper we developed a simple model describing the far-field from a video-pulse source near the ground and for grazing incidence. We report here on a recent field test in which we attempted to verify the model. Our results show quantitative agreement with the model for most of the tested parameter space. We have also extended our model to include all elevation angles, including up to vertical. The computed engagement envelope shows three distinct regions: At grazing angles the field is small and diminishes to near zero at the earth's surface; at low-to moderate angles strong lobing occurs; at high angles the video-pulse field approaches its free-space form. 6 refs., 16 figs.
Date:
July 19, 1991
Creator:
Dreyer, K. A. & Buettner, H. M.
Object Type:
Report
System:
The UNT Digital Library
Selective generation and extraction of low emittance electrons from plasmas: A new concept for E-beam cathodes
It is shown that hollow cathode discharges can operate in a mode characterized by a two-component electron energy distribution: bulk electrons with a thermal distribution with a temperature of a few electron volts, and a component of fast electrons with an energy of about 30 eV and a thermal spread of about 0.1 eV. Measurements of both parallel and perpendicular energy spreads confirm the existence of fast, low energy spread electrons. Selective extraction of these electrons can form the basis of a high current, high brightness electron gun which could be well suited for EBIS applications. 8 refs., 4 figs., 1 tab.
Date:
September 19, 1991
Creator:
Hershcovitch, A.
Object Type:
Article
System:
The UNT Digital Library
Accelerometer and strain gage evaluation
This document describes the method developed by Sandia National Laboratories (SNL) to evaluate transducer used in the design certification testing of nuclear material shipping packages. This testing project was performed by SNL for the Office of Civilian Radioactive Waste Management (OCRWM). This evaluation is based on the results of tests conducted to measure ruggedness, failure frequency, repeatability, and manufacturers' calibration data under both field and laboratory conditions. The results of these tests are provided and discussed. The transducer were selected for testing by surveying cask contractors and testing facilities. Important insights relating to operational characteristics of accelerometer types were gained during field testing. 11 refs., 105 figs., 16 tabs.
Date:
June 19, 1991
Creator:
Ammerman, D. J.; Madsen, M. M.; Uncapher, W. L.; Stenberg, D. R. & Bronowski, D. R.
Object Type:
Report
System:
The UNT Digital Library
[Press release: New York's highest court stuns gay and lesbian parenting activists]
Press release expressing outrage against the New York court's decision to deny visitation rights to a lesbian parent.
Date:
May 19, 1991
Creator:
Lambda Legal Defense and Education Fund Inc.
Object Type:
Text
System:
The UNT Digital Library
[Press release: New York's highest court accepts brief from health experts opposing coercive policies against people with HIV]
Press release announcing the decision of New York's highest court to accept the brief from 23 individuals and organizations protesting the move to allow HIV testing without the individual's consent.
Date:
February 19, 1991
Creator:
Lambda Legal Defense and Education Fund Inc.
Object Type:
Text
System:
The UNT Digital Library
[Press release: Federal court opens way to death of military ban against lesbian and gay service members]
Press release celebrating the reinstatement of the case of Reverend Dusty Pruitt, who was honorably discharged from the Army Reserves after revealing her sexual orientation as a lesbian.
Date:
August 19, 1991
Creator:
Lambda Legal Defense and Education Fund Inc.
Object Type:
Text
System:
The UNT Digital Library
[Press Release: New York Judge upholds gay teachers' lawsuit for domestic partner benefits]
A press release about a New York judge recognizing lesbian and gay teachers as having the legal right to sue for health insurance benefits for their domestic partners.
Date:
August 19, 1991
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 83, No. 51, Ed. 1 Thursday, December 19, 1991
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
December 19, 1991
Creator:
Reynolds, Jim
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 83, No. 38, Ed. 1 Thursday, September 19, 1991
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
September 19, 1991
Creator:
Reynolds, Jim
Object Type:
Newspaper
System:
The Portal to Texas History
Maximum credible event determination for the surveillance powder samples and their handling containers
An investigation was done to determine the maximum credible event value for samples of explosives and disassembled components up to 1.2 g when stored in conductive plastic vials as packaged and handled, stored, or transported at Mound. The test was performed at Test Firing, with photographs taken before and after the test. The standard propagation test setup was used; a vial containing 1.2 g of PETN (pentaerythritol tetranitrate) was surrounded by other like vials containing 1.2-g samples of PETN. The 1.2-g PETN pellet was then ignited by an EX-12 detonator. The test showed that there was no propagation and that the maximum credible event value for the handling tray is 1.2 g. The test also showed that when the tray is placed in a metal container the MCE value will still be 1.2 g. 9 figs.
Date:
September 19, 1991
Creator:
Jones, R.B. & Cogan, J.D. Jr.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Body found - Dallas]
B-roll video footage from the WBAP-TV television station in Fort Worth, Texas, covering a news story.
Date:
March 19, 1991, 12:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Bad cops]
Video footage from the KXAS-TV television station in Fort Worth, Texas, covering a news story.
Date:
March 19, 1991, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Prostitute murder #3]
Video footage from the WBAP-TV television station in Fort Worth, Texas, covering a news story. This story aired at 6pm.
Date:
March 19, 1991, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Shooting Dallas (Savoy)]
Video footage from the KXAS-TV television station in Fort Worth, Texas, covering a news story.
Date:
April 19, 1991, 6:00 a.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Prostitute 3 murder]
Video footage from the KXAS-TV television station in Fort Worth, Texas, covering a news story.
Date:
March 19, 1991, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Prostitute 3 murder]
Video footage from the WBAP-TV television station in Fort Worth, Texas, covering a news story. This story aired at 5pm.
Date:
March 19, 1991, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Weak interactions and presupernova evolution
The role of weak interactions, particularly electron capture and {beta}{sup {minus}} decay, in presupernova evolution is discussed. The present uncertainty in these rates is examined and the possibility of improving the situation is addressed. 12 refs., 4 figs.
Date:
February 19, 1991
Creator:
Aufderheide, M.B. (Lawrence Livermore National Lab., CA (USA) State Univ. of New York (USA). Dept. of Physics)
Object Type:
Article
System:
The UNT Digital Library
epsilon. prime /. epsilon. : Review and recent progress
The evolution of the theoretical perspective on {epsilon}{prime}/{epsilon} is reviewed. The introduction of the Z{sup O} penguin and the effects of high M{sub t} are discussed, in particular the possibility for {epsilon}{prime}/{epsilon} to be identically zero. Recent calculations of {epsilon}{prime}/{epsilon} based on current estimates and bounds on the input parameters are presented. 41 refs., 13 figs.
Date:
April 19, 1991
Creator:
Franzini, P. J.
Object Type:
Article
System:
The UNT Digital Library
A method for characterizing volcanic ash
The development of an automated program for characterization of particles using a scanning electron microscope (SEM) with an energy dispersive X-ray detector (EDS) has greatly reduced the time required for analysis of particulate samples. The SEM system provides a digital representation of all particles scanned such that further measurement of the size, shape, and area are a product of image processing. The EDS and associated software provides information as to the particles' chemical composition. The data obtained from the SEM by this method are reduced by computer to obtain distribution graphs for size, density, shape, and mineralogy. These SEM results have been tested by comparisons with results obtained by traditional optical microscopy, which supports the results and provide details concerning crystallinity and glass content. This method was applied to the ash that damaged the engines from the KLM 747 flight of December 15, 1989 while encountering the ash cloud from Redoubt Volcano. The sample was collected from the pitot-static system and had not been exposed to any engine parts that might have changed its characteristics. The sample analysis presented here demonstrates the capabilities and information obtainable from out automated SEM technique. 5 refs., 7 figs., 3 tabs.
Date:
January 19, 1991
Creator:
Bayhurst, Gregory K.; Wohletz, Kenneth H. & Mason, Allen S.
Object Type:
Article
System:
The UNT Digital Library
Cherokeean/Herald (Rusk, Tex.), Vol. 143, No. 33, Ed. 1 Thursday, September 19, 1991
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
September 19, 1991
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Cherokeean/Herald (Rusk, Tex.), Vol. 143, No. 46, Ed. 1 Thursday, December 19, 1991
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
December 19, 1991
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Register, Volume 16, Number 86, Pages 6667-6713, November 19, 1991
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
November 19, 1991
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History