Partner
Oklahoma Historical Society
551
UNT Libraries Government Documents Department
293
UNT Libraries Special Collections
160
UNT Libraries
115
Sterling Municipal Library
27
Texas Historical Commission
24
Calhoun County Public Library
18
Allen Public Library
13
Keystone Crossroads Historical Society
13
UT San Antonio Libraries Special Collections
11
86 More
Collection
Oklahoma Publishing Company Photography Collection
377
Texas Digital Newspaper Program
344
Office of Scientific & Technical Information Technical Reports
210
Oklahoma Digital Newspaper Program
178
Tocker Foundation Grant
174
KXAS-NBC 5 News Collection
114
UNT Theses and Dissertations
90
Texas Attorney General Opinions
35
Chickasha Newspaper Collection
30
Texas State Publications
30
147 More
Degree Department
Degree Discipline
Degree Level
States
Year
Month
Results:
1 - 24 of
1,536
next
[Document with Handwritten Notes: AIDS ARMS Network]
A summary of caseload statistics from the AIDS ARMS Network listing out the number of clients and information about those clients. This document is followed by a map.
Date:
December 1, 1986
Creator:
AIDS ARMS Network
Object Type:
Text
System:
The UNT Digital Library
Exchange of bonded hydrogen in amorphous silicon by deuterium
We show that bonded hydrogen in a-Si:H is readily exchanged by atomic deuterium when exposed to a deuterium plasma discharge. The effective diffusion coefficient for the D,H exchange 10/sup -14/ cm/sup 2//sec at 160/sup 0/C, is comparable to that of interstitial hydrogen in c-Si.
Date:
December 1, 1986
Creator:
Abeles, B.; Yang, L.; Leta, D.P. & Majkrzak, C.F.
Object Type:
Article
System:
The UNT Digital Library
Transport and Reaction Kinetics at the Glass:Solution Interface Region: Results of Repository-Oriented Leaching Experiments
Repository-oriented leaching experiments involving Savannah River Laboratory (SRL) 165 type glass under a {gamma}-radiation field (1 = 0.2 x 10{sup 4} R/h) have been performed by the Nevada Nuclear Waste Storage Investigations (NNWSI) project. In this communication, we discuss glass surface analyses obtained by SEM, nuclear resonance profiling, and SIMS together with leachate solution data in relation to a mechanism that couples diffusion, hydrolysis (etching and gelation), and precipitation to qualitatively describe the release of different glass components to the leachant solutions. The release of mobile (e.g., Li) and partly mobile (e.g., B) species is controlled primarily by interdiffusion with water species across the interdiffusion zone. Glass components that are immobile in the interdiffusion zone are released to the solution by etching. For prediction of long-term steady-state concentrations of glass components with low solubility, the relative rates of release from the glass and secondary mineral precipitation must be taken into account.
Date:
December 31, 1986
Creator:
Abrajano, T. A., Jr. & Bates, J. K.
Object Type:
Report
System:
The UNT Digital Library
Micelle-derived catalysts for extended Schulz-Flory. [Quarterly report], April 1, 1986--June 30, 1986
The objective of this program is to develop a synthesis gas conversion catalyst with improved selectivity to gasoline or diesel range fuel via application of a micelle technique for preparing novel supported catalysts with specific size ruthenium particles. The major emphasis is to investigate hydrocarbon cutoff principle and to apply it for developing selective catalysts. We previously reported that cutoff is not effected with 40--60 {Angstrom} and 20--40 {Angstrom} ruthenium particles on {gamma}-Al{sub 2}O{sub 3}. We recently tested a catalyst with <20 {Angstrom} ruthenium particles. Well dispersed ruthenium in that catalyst extensively agglomerated to larger particles even during the course of a short test despite the high H{sub 2}:CO ratio used. Therefore, we could not conclude whether cutoff is effected with <20 {Angstrom} ruthenium particles. We are going to continue to evaluate the effect of operational conditions and also evaluate the effect of modifiers on ruthenium agglomeration. A catalyst with <20 {Angstrom} ruthenium particles will be evaluated to investigate occurrence of cutoff, after no agglomeration conditions are identified. We are now proposing to conduct, parallel to the main approach, a second research approach which will aim at developing a ruthenium catalyst with substantially lower light ends selectivity while maintaining at …
Date:
December 31, 1986
Creator:
Abrevaya, H.
Object Type:
Report
System:
The UNT Digital Library
Micelle-derived catalysts for extended Schulz-Flory. [Quarterly report], January 1, 1986--March 31, 1986
The objective of this program is to develop a synthesis gas conversion catalyst selective to gasoline or diesel range fuel via application of a micelle technique for preparing specific site supported ruthenium particles. The current emphasis is to investigate hydrocarbon cutoff principle and to apply it for developing selective catalysts. During this quarter, micelle technique was further improved and 1 ruthenium particle:l reverse micelle limit was approached by careful control of catalyst synthesis conditions. Accordingly, it became possible to synthesize supported particles that closely meet the size and composition targets originally set. This improved technique was applied to synthesis of chemically modified ruthenium catalysts. Some of the chemically modified ruthenium catalysts will be evaluated later in the program. We previously reported that 40--60 {Angstrom} ruthenium particles prepared on {gamma}-alumina do not result in hydrocarbon cutoff. We could not determine then whether smaller ruthenium particles result in hydrocarbon cutoff because these particles agglomerated via ruthenium carbonyl formation during the course of a 6--10 day test. We have recently evaluated a catalyst with 20--40 {Angstrom} ruthenium particles prepared on {gamma}-alumina by carefully analyzing products initially made during the test prior to substantial ruthenium agglomeration. We concluded that cutoff is not effected by …
Date:
December 31, 1986
Creator:
Abrevaya, H.
Object Type:
Report
System:
The UNT Digital Library
Micelle-derived catalysts for extended Schulz-Flory. Technical progress report, July 1, 1986--September 30, 1986
The objective of this program is to develop a synthesis gas conversion catalyst with higher selectivity to liquid fuels, while maintaining catalytic activity and stability at least equivalent relative to state-of-the-art precipitated iron catalysts. During this quarter, the emphasis in the program has been the investigation of the hydrocarbon cutoff hypothesis with supported ruthenium catalysts. An alumina-supported catalyst with smaller than 20{Angstrom} ruthenium particles was tested under conditions of maximal water gas shift activity. During this test more than 90% of the water made in the Fischer-Tropsch synthesis reaction was converted to H{sub 2}. However, the extent of ruthenium metal agglomeration was not reduced. Accordingly, it was not possible to conclude whether hydrocarbon cutoff occurs with smaller than 20{Angstrom} ruthenium particles on {gamma}-alumina. A ruthenium catalyst prepared on Y-type zeolite had 20{Angstrom} or smaller ruthenium particles according to STEM examination and a 15{Angstrom} average ruthenium metal particle size according to EXAFS examination. The ruthenium metal particle size was stable during the test with this catalyst. The hydrocarbon product distribution was Anderson-Schulz-Flory with no cutoff up to a carbon number of 160. A well-dispersed titania-supported ruthenium catalyst is going to be evaluated during the next quarter in order to determine whether …
Date:
December 31, 1986
Creator:
Abrevaya, H.
Object Type:
Report
System:
The UNT Digital Library
Micelle-derived catalysts for extended Schulz-Flory. Technical progress report, October 1, 1986--December 31, 1986
The objective of this program is to develop a synthesis gas conversion catalyst with higher selectivity to liquid fuels, while maintaining catalytic activity and stability at least equivalent relative to state-of-the-art precipitated iron catalysts. Hydrocarbon cutoff hypothesis and developmental needs for a ruthenium catalyst with low light ends selectivity were investigated during this quarter. Hydrocarbon product distribution was Anderson-Schulz-Flory up to a carbon number of 250 and cutoff did not occur with a titania-supported catalyst containing ruthenium particles smaller than 20{Angstrom}. It was found that an alumina-supported catalyst with 1% (by weight) ruthenium in the form of 50{Angstrom} to 100{Angstrom} metal particles was initially about half as active (by catalyst volume) and made one quarter of the amount of C{sub 1}{minus}C{sub 4} light end products relative to the Sasol precipitated iron catalyst.
Date:
December 31, 1986
Creator:
Abrevaya, H.
Object Type:
Report
System:
The UNT Digital Library
The Paducah Post (Paducah, Tex.), Vol. 80, No. 41, Ed. 1 Thursday, December 4, 1986
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
December 4, 1986
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 80, No. 42, Ed. 1 Thursday, December 11, 1986
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
December 11, 1986
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 80, No. 43, Ed. 1 Thursday, December 18, 1986
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
December 18, 1986
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 80, No. 44, Ed. 1 Thursday, December 25, 1986
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
December 25, 1986
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
Vocational Education: A Choice for the Future
Report detailing the plan for vocational education in Texas from 1987 onwards. In reaction to the oil and agriculture industries facing economic hardship, vocational education to diversify the state's economic prospects for the future became a priority in this report.
Date:
December 1, 1986
Creator:
Advisory Council for Technical-Vocational Education in Texas
Object Type:
Report
System:
The Portal to Texas History
AACOG Region, Volume 13, Number 12, December 1986
Monthly newsletter of the Alamo Area Council of Governments describing news and events of relevance to the agencies.
Date:
December 1986
Creator:
Alamo Area Council of Governments
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Precipitation of krypton in an amorphous Ti-Cr alloy. [Ti-Cr Thin Films]
Results of a TEM investigation of the microstructural changes produced by the room temperature implantation of energetic Kr/sup +/ ions into a glassy Ti-Cr thin film are reported. As in other metals, the Kr precipitates as solid crystallites. The precipitation of crystalline Kr is accompanied by ultrafine crystallization of the metal host around each Kr crystal. With increasing fluence, the Kr precipitates grow to a critical size at which they melt, and the adjacent fine metal crystals disappear. A new TEM imaging technique is described briefly which utilizes the small angle electron scattering fine structure and which in principle is capable of revealing all fine particles simultaneously.
Date:
December 1, 1986
Creator:
Allen, C. W. & Birtcher, R. C.
Object Type:
Article
System:
The UNT Digital Library
High-power pulse propagation experiments
One of the questions that must be answered in assessing the potential of pulsed microwave beams as directed energy weapons is, ''What is the maximum pulse energy (and/or peak power) that can be delivered from a source to a target.'' Atmospheric breakdown caused by the electromagnetic fields of the pulse sets one limit on energy propagation, and the breakdown threshold was the subject of fairly extensive investigation a number of years ago. The evolution of microwave source technology has extended the parameter range over which propagation needs to be understood, and additional issues that have not previously been investigated experimentally have assumed a new importance. A new generation of experiments is underway, planned, or proposed to investigate these issues. 13 refs.
Date:
December 1, 1986
Creator:
Alvarez, Raymond A.
Object Type:
Article
System:
The UNT Digital Library
Southwest Retort, Volume 39, Number 9, December 1986
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
December 1986
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Vitamin B-6 Status of Patients with Chronic Obstructive Pulmonary Disease
The problem of this study is to determine the vitamin B-6 status of patients who have chronic obstructive pulmonary disease (COPD). Erythrocyte aspartate transaminase assay was the method for measuring vitamin B-6 status. The vitamin B-6 status was examined in thirty subjects (ten COPD subjects and twenty control subjects). An unpaired t-test was used to compare the vitamin B-6 status of the COPD group versus the control group. Four determinants (percentage stimulation, ratio of basal to stimulated activity, basal activity, and stimulated activity) were used to determine vitamin B-6 status in both groups of subjects. Percentage stimulation and ratio of basal to stimulated activity were not significantly different (control group versus COPD group) at the .05 level. However, two of ten COPD subjects had values for percentage stimulation that were two standard deviations above the mean, indicating a poor B-6 status. In contrast, basal activity and stimulated activity of erythrocyte aspartate transaminase were found to be significantly lower at the .05 level in the COPD group than the control group. Therefore, the COPD subjects as a group had some biochemical characteristics of a lower level of vitamin B-6 than the controls.
Date:
December 1986
Creator:
Anurak Bhunthurat
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Judge Lawrence Walsh
Photograph of Federal Judge Lawrence Walsh.
Date:
December 20, 1986
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Judge Lawrence Walsh
Photograph of Federal Judge Lawrence Walsh.
Date:
December 20, 1986
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Judge Lawrence Walsh
Photograph of Federal Judge Lawrence Walsh.
Date:
December 20, 1986
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Judge Lawrence Walsh
Photograph of Federal Judge Lawrence Walsh.
Date:
December 20, 1986
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Judge Lawrence Walsh
Photograph of Federal Judge Lawrence Walsh.
Date:
December 20, 1986
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Judge Lawrence Walsh
Photograph of Federal Judge Lawrence Walsh.
Date:
December 20, 1986
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Judge Lawrence Walsh
Photograph of Federal Judge Lawrence Walsh.
Date:
December 20, 1986
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History