Partner
UNT Libraries Government Documents Department
1,240
Oklahoma Historical Society
624
UNT Libraries Special Collections
363
Sterling Municipal Library
27
Texas Historical Commission
27
UNT Libraries
27
Carl Albert Congressional Research and Studies Center
23
National WASP WWII Museum
19
Alvin Community College
14
Rice University Woodson Research Center
13
85 More
Collection
Office of Scientific & Technical Information Technical Reports
1,149
Oklahoma Publishing Company Photography Collection
409
Texas Digital Newspaper Program
380
KXAS-NBC 5 News Collection
278
Tocker Foundation Grant
173
Oklahoma Digital Newspaper Program
168
Jim Argo Collection
76
Abilene Library Consortium
41
Texas State Publications
36
Chickasha Newspaper Collection
30
144 More
Degree Department
Country
States
Year
Month
Results:
1 - 24 of
2,715
next
The Allen American (Allen, Tex.), Vol. 23, No. 78, Ed. 1 Wednesday, September 30, 1992
Semiweekly newspaper from Allen, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1992
Creator:
Epperson, Wayne
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 92, No. 170, Ed. 1 Wednesday, September 30, 1992
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 30, 1992
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, September 30, 1992
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1992
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Aransas Pass Progress (Aransas Pass, Tex.), Vol. 84, No. 32, Ed. 1 Wednesday, September 30, 1992
Weekly newspaper from Aransas Pass, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1992
Creator:
Cole, Mary
Object Type:
Newspaper
System:
The Portal to Texas History
Base sequence effects on interactions of aromatic mutagens with DNA
The chemical binding of bulky, mutagenic and carcinogenic polynuclear aromatic compounds to certain base-sequences in genomic DNA is known to inhibit DNA replication, and to induce mutations and cancer. In particular, sequences that contain multiple consecutive guanines appear to be hot spots of mutation. The objectives of this research are to determine how the base sequence around the mutagen-modified target bases influences the local DNA conformation and gives rise to mispairing of bases, or deletions, near the lesion. Oligonucleotides containing one, two, or three guanines were synthesized and chemically reacted with the mutagen anti-7,8-dihydroxy-9,10-epoxy-benzo(a)pyrene (BPDE), one of the most mutagenic and tumorigenic metabolites of benzo(a)pyrene. Adducts are formed in which only one of the guanines is modified by trans or cis addition to the exocyclic amino group. The BPDE-oligonucleotides are separated chromatographically, and the site of modification is established by Maxam-Gilbert high resolution gel electrophoresis techniques. The thermodynamic properties of duplexes using complementary, or partially complementary strands were examined. In the latter, the base opposite the modified guanine was varied in order to investigate the probability of mispairing of the modified G with A,T and G. The successful synthesis of stereospecific and site-specific mutagen-oligonucleotide adducts opens new possibilities for correlating …
Date:
September 30, 1992
Creator:
Geacintov, N. E.
Object Type:
Report
System:
The UNT Digital Library
Base sequence effects on interactions of aromatic mutagens with DNA. Progress report, September 1, 1991--August 31, 1992
The chemical binding of bulky, mutagenic and carcinogenic polynuclear aromatic compounds to certain base-sequences in genomic DNA is known to inhibit DNA replication, and to induce mutations and cancer. In particular, sequences that contain multiple consecutive guanines appear to be hot spots of mutation. The objectives of this research are to determine how the base sequence around the mutagen-modified target bases influences the local DNA conformation and gives rise to mispairing of bases, or deletions, near the lesion. Oligonucleotides containing one, two, or three guanines were synthesized and chemically reacted with the mutagen anti-7,8-dihydroxy-9,10-epoxy-benzo[a]pyrene (BPDE), one of the most mutagenic and tumorigenic metabolites of benzo[a]pyrene. Adducts are formed in which only one of the guanines is modified by trans or cis addition to the exocyclic amino group. The BPDE-oligonucleotides are separated chromatographically, and the site of modification is established by Maxam-Gilbert high resolution gel electrophoresis techniques. The thermodynamic properties of duplexes using complementary, or partially complementary strands were examined. In the latter, the base opposite the modified guanine was varied in order to investigate the probability of mispairing of the modified G with A,T and G. The successful synthesis of stereospecific and site-specific mutagen-oligonucleotide adducts opens new possibilities for correlating …
Date:
September 30, 1992
Creator:
Geacintov, N. E.
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 70, No. 287, Ed. 1 Wednesday, September 30, 1992
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1992
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 88, No. 42, Ed. 1 Wednesday, September 30, 1992
Weekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1992
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Brittle to ductile transition in cleavage fracture
The problem of interpretation of fracture transition from brittle to ductile or vice versa is the subject of study. An instrumented tapered double cantilever beam (TDCB) has been developed as a definitive tool in the study of the intrinsic mechanism in single crystalline samples. In this experiment, the crack velocity is directly proportional to actuator velocity. In experiments performed on TDCB shaped Si single crystals, oriented for cleavage on either [l brace]111[r brace] or [l brace]110[r brace] planes, a number of troubling features of jerky carck extension were encountered. Evidence suggests that nucleation of dislocation loops from crack tip is easier than moving these dislocations away from crack tip. 14 refs, 1 fig.
Date:
September 30, 1992
Creator:
Argon, A. S. & Berg, Q.
Object Type:
Report
System:
The UNT Digital Library
Brittle to ductile transition in cleavage fracture. Final techical report, April 1, 1987--June 30, 1991
The problem of interpretation of fracture transition from brittle to ductile or vice versa is the subject of study. An instrumented tapered double cantilever beam (TDCB) has been developed as a definitive tool in the study of the intrinsic mechanism in single crystalline samples. In this experiment, the crack velocity is directly proportional to actuator velocity. In experiments performed on TDCB shaped Si single crystals, oriented for cleavage on either {l_brace}111{r_brace} or {l_brace}110{r_brace} planes, a number of troubling features of jerky carck extension were encountered. Evidence suggests that nucleation of dislocation loops from crack tip is easier than moving these dislocations away from crack tip. 14 refs, 1 fig.
Date:
September 30, 1992
Creator:
Argon, A. S. & Berg, Q.
Object Type:
Report
System:
The UNT Digital Library
Catalytic conversion of light alkanes. [Methane, ethane, propane and butanes]
The third and last quarterly report of 1992 on the Catalytic conversion of Light Alkanes reviews the work done between July, 1992 and September 30, 1992 on the Cooperative Agreement. The mission of this work is to devise a new catalyst which can be used in a simple economic process to convert the light alkanes in natural gas to oxygenate products which can either be used as clean-burning, high octane liquid fuels, as fuel components or as precursors to liquid hydrocarbon transportation fuel. During the past quarter we have continued to design, prepare, characterize and test novel catalysts for the mild selective reaction of light hydrocarbons with air or oxygen to produce alcohols directly. These catalysts are designed to form active metal oxo (MO) species and to be uniquely active for the homolytic cleavage of the carbon-hydrogen bonds in light alkanes producing intermediates which can form alcohols. We continue to investigate three molecular environments for the active catalytic species that we are trying to generate: electron-deficient macrocycles (PHASE I), polyoxometallates (PHASE II) and framework-substituted zeolites (PHASE III).
Date:
September 30, 1992
Creator:
Lyons, J. E.
Object Type:
Report
System:
The UNT Digital Library
Catalytic conversion of light alkanes. Quarterly progress report, July 1, 1992--September 30, 1992
The third and last quarterly report of 1992 on the Catalytic conversion of Light Alkanes reviews the work done between July, 1992 and September 30, 1992 on the Cooperative Agreement. The mission of this work is to devise a new catalyst which can be used in a simple economic process to convert the light alkanes in natural gas to oxygenate products which can either be used as clean-burning, high octane liquid fuels, as fuel components or as precursors to liquid hydrocarbon transportation fuel. During the past quarter we have continued to design, prepare, characterize and test novel catalysts for the mild selective reaction of light hydrocarbons with air or oxygen to produce alcohols directly. These catalysts are designed to form active metal oxo (MO) species and to be uniquely active for the homolytic cleavage of the carbon-hydrogen bonds in light alkanes producing intermediates which can form alcohols. We continue to investigate three molecular environments for the active catalytic species that we are trying to generate: electron-deficient macrocycles (PHASE I), polyoxometallates (PHASE II) and framework-substituted zeolites (PHASE III).
Date:
September 30, 1992
Creator:
Lyons, J. E.
Object Type:
Report
System:
The UNT Digital Library
Characterization of the Defense Waste Processing Facility (DWPF) Environmental Assessment (EA) glass standard reference material
Liquid high-level nuclear waste at the Savannah River Site (SRS) will be immobilized by vitrification in borosilicate glass. The glass will be produced and poured into stainless steel canisters in the Defense Waste Processing Facility (DWPF). Other waste form producers, such as West Valley Nuclear Services (WVNS) and the Hanford Waste Vitrification Project (HWVP), will also immobilize high-level radioactive waste in borosilicate glass. The canistered waste will be stored temporarily at each facility for eventual permanent disposal in a geologic repository. The Department of Energy has defined a set of requirements for the canistered waste forms, the Waste Acceptance Preliminary Specifications (WAPS). The current Waste Acceptance Preliminary Specification (WAPS) 1.3, the product consistency specification, requires the waste form producers to demonstrate control of the consistency of the final waste form using a crushed glass durability test, the Product Consistency Test (PCT). In order to be acceptable, a waste glass must be more durable during PCT analysis than the waste glass identified in the DWPF Envirorunental Assessment (EA). In order to supply all the waste form producers with the same standard benchmark glass, 1000 pounds of the EA glass was fabricated. The chemical analyses and characterization of the benchmark EA glass …
Date:
September 30, 1992
Creator:
Jantzen, Carol M.; Bibler, N. E. & Beam, D. C.
Object Type:
Report
System:
The UNT Digital Library
Characterization of the Defense Waste Processing Facility (DWPF) Environmental Assessment (EA) glass standard reference material. [Site Characterization]
Liquid high-level nuclear waste at the Savannah River Site (SRS) will be immobilized by vitrification in borosilicate glass. The glass will be produced and poured into stainless steel canisters in the Defense Waste Processing Facility (DWPF). Other waste form producers, such as West Valley Nuclear Services (WVNS) and the Hanford Waste Vitrification Project (HWVP), will also immobilize high-level radioactive waste in borosilicate glass. The canistered waste will be stored temporarily at each facility for eventual permanent disposal in a geologic repository. The Department of Energy has defined a set of requirements for the canistered waste forms, the Waste Acceptance Preliminary Specifications (WAPS). The current Waste Acceptance Preliminary Specification (WAPS) 1.3, the product consistency specification, requires the waste form producers to demonstrate control of the consistency of the final waste form using a crushed glass durability test, the Product Consistency Test (PCT). In order to be acceptable, a waste glass must be more durable during PCT analysis than the waste glass identified in the DWPF Envirorunental Assessment (EA). In order to supply all the waste form producers with the same standard benchmark glass, 1000 pounds of the EA glass was fabricated. The chemical analyses and characterization of the benchmark EA glass …
Date:
September 30, 1992
Creator:
Jantzen, Carol M.; Bibler, N. E. & Beam, D. C.
Object Type:
Report
System:
The UNT Digital Library
Chickasha Daily Express (Chickasha, Okla.), Vol. 101, No. 172, Ed. 1 Wednesday, September 30, 1992
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 30, 1992
Creator:
Plummer, George
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Clifton Record (Clifton, Tex.), Vol. 97, No. 40, Ed. 1 Wednesday, September 30, 1992
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1992
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
[Clipping: 8th NAAO Conference]
Newspaper clipping featuring a tentative agenda for the 8th Annual National Association of Artists Organizations (NAAO). The conference ran from September 30, 1992 to October 4th, 1992 at the Mexic-Arte Museum in Austin, Texas.
Date:
1992-09-30/1992-10-04
Creator:
Mexic-Arte Museum (Austin, Tex.)
Object Type:
Clipping
System:
The Portal to Texas History
[Clipping: NAAO Conference Events]
Clipping advertising sessions, panels, and events occurring at the 8th annual National Association of Artists Organizations (NAAO) between the dates of September 30th, 1992 and October 4th, 1992. The conference was held at the Mexic-Arte Museum in Austin, Texas.
Date:
1992-09-30/1992-10-04
Creator:
Mexic-Arte Museum (Austin, Tex.)
Object Type:
Clipping
System:
The Portal to Texas History
The Collegian (Hurst, Tex.), Vol. 5, No. 5, Ed. 1 Wednesday, September 30, 1992
Weekly student newspaper published in Hurst, Texas serving the Tarrant County Junior College District that includes school news and information along with advertising.
Date:
September 30, 1992
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Colony Leader (The Colony, Tex.), Vol. 11, No. 44, Ed. 1 Wednesday, September 30, 1992
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1992
Creator:
Epperson, Wayne
Object Type:
Newspaper
System:
The Portal to Texas History
The comparison of DYNA3D to approximate solutions for a partially- full waste storage tank subjected to seismic loading
Mathematical solutions to the problem consisting of a partially-full waste tank subjected to seismic loading, embedded in soil, is classically difficult in that one has to address: soil-structure interaction, fluid-structure interaction, non-linear behavior of material, dynamic effects. Separating the problem and applying numerous assumptions will yield approximate solutions. This paper explores methods for generating these solutions accurately.
Date:
September 30, 1992
Creator:
Zaslawsky, M. & Kennedy, W. N.
Object Type:
Report
System:
The UNT Digital Library
The comparison of DYNA3D to approximate solutions for a partially- full waste storage tank subjected to seismic loading
Mathematical solutions to the problem consisting of a partially-full waste tank subjected to seismic loading, embedded in soil, is classically difficult in that one has to address: soil-structure interaction, fluid-structure interaction, non-linear behavior of material, dynamic effects. Separating the problem and applying numerous assumptions will yield approximate solutions. This paper explores methods for generating these solutions accurately.
Date:
September 30, 1992
Creator:
Zaslawsky, M. & Kennedy, W. N.
Object Type:
Report
System:
The UNT Digital Library
Detection of nitroesters and moisture in combustible cartridge case wall by indicator strips and instruments. Final report
Nitroester migration into the case wall from the propellant and moisture accumulation within the case have been identified as important internal and external (respectively) factors which contribute to the physical deterioration of combustible cartridge case (ccc) munitions. The latter factor also may hinder proper ignition of the ccc and cause incomplete combustion in firing. Visual indicators sensitive to these factors and affixed to ccc rounds would allow quality assurance specialists or gun crews in the field to rapidly determine the potential reliability of individual rounds. Previous work in this task identified chemistries suitable for the detection of nitroesters and moisture in the ccc wall. A version of the Griess reaction was modified for a dry colorimetric indicator which in the presence of nitroglycerin (NG) or diethyleneglycol dinitrate (DEGDN) generates a brilliant red color. Inorganic salts such as cupric chloride, which changes from brown to blue-green upon hydration, were suggested as promising visual indicators of moisture. This report describes the development and preliminary testing of prototype nitroester and moisture indicator strips, and the scoping of two instrumental techniques, infrared spectroscopy and electrical capacitance, which could lead to portable instruments for rapid and nondestructive testing of ccc in the field.
Date:
September 30, 1992
Creator:
Ho, C. H.; Moneyhun, J. H.; Agouridis, D. C.; Gayle, T. M.; Hurst, G. B. & Griest, W. H.
Object Type:
Report
System:
The UNT Digital Library
Developing integrated benchmarks for DOE performance measurement
The objectives of this task were to describe and evaluate selected existing sources of information on occupational safety and health with emphasis on hazard and exposure assessment, abatement, training, reporting, and control identifying for exposure and outcome in preparation for developing DOE performance benchmarks. Existing resources and methodologies were assessed for their potential use as practical performance benchmarks. Strengths and limitations of current data resources were identified. Guidelines were outlined for developing new or improved performance factors, which then could become the basis for selecting performance benchmarks. Data bases for non-DOE comparison populations were identified so that DOE performance could be assessed relative to non-DOE occupational and industrial groups. Systems approaches were described which can be used to link hazards and exposure, event occurrence, and adverse outcome factors, as needed to generate valid, reliable, and predictive performance benchmarks. Data bases were identified which contain information relevant to one or more performance assessment categories . A list of 72 potential performance benchmarks was prepared to illustrate the kinds of information that can be produced through a benchmark development program. Current information resources which may be used to develop potential performance benchmarks are limited. There is need to develop an occupational safety …
Date:
September 30, 1992
Creator:
Barancik, J. I.; Kramer, C. F. & Thode Jr., H. C.
Object Type:
Report
System:
The UNT Digital Library