Partner
Oklahoma Historical Society
230
UNT Libraries Government Documents Department
90
UNT Libraries Special Collections
47
Sterling Municipal Library
9
UNT Libraries
6
Carl Albert Congressional Research and Studies Center
5
Alvin Community College
4
Nellie Pederson Civic Library
4
Keystone Crossroads Historical Society
4
The Colony Public Library
3
54 More
Collection
Jim Argo Collection
167
Texas Digital Newspaper Program
99
Office of Scientific & Technical Information Technical Reports
78
Oklahoma Digital Newspaper Program
65
Tocker Foundation Grant
47
KXAS-NBC 5 News Collection
39
Chickasha Newspaper Collection
17
Altus Times-Democrat
9
The Baytown Sun
9
Sapulpa Herald
9
85 More
Degree Department
Country
Year
Month
Day
Language
Results:
1 - 24 of
486
next
The Chickasha Star (Chickasha, Okla.), Vol. 94, No. 177, Ed. 1 Saturday, January 27, 1996
Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 27, 1996
Creator:
Settle, David
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Conversion of plutonium-containing materials into borosilicate glass using the glass material oxidation and dissolution system
The end of the cold war has resulted in excess plutonium-containing materials (PCMs) in multiple chemical forms. Major problems are associated with the long-term management of these materials: safeguards and nonproliferation issues; health, environment, and safety concerns; waste management requirements; and high storage costs. These issues can be addressed by conversion of the PCMs to glass: however, conventional glass processes require oxide-like feed materials. Conversion of PCMs to oxide-like materials followed by vitrification is a complex and expensive process. A new vitrification process has been invented, the Glass Material Oxidation and Dissolution System (GMODS) to allow direct conversion of PCMs to glass. GMODS directly converts metals, ceramics, and amorphous solids to glass; oxidizes organics with the residue converted to glass; and converts chlorides to borosilicate glass and a secondary sodium chloride stream. Laboratory work has demonstrated the conversion of cerium (a plutonium surrogate), uranium (a plutonium surrogate), Zircaloy, stainless steel, multiple oxides, and other materials to glass. Equipment options have been identified for processing rates between 1 and 100,000 t/y. Significant work, including a pilot plant, is required to develop GMODS for applications at an industrial scale.
Date:
January 27, 1996
Creator:
Forsberg, C. W.; Beahm, E. C. & Parker, G. W.
Object Type:
Article
System:
The UNT Digital Library
Demonstration of omnivorous non-thermal mixed waste treatment: Direct chemical oxidation using peroxydisulfate. Progress report SF2-3-MW-35, October--December 1995
Direct Chemical Oxidation is an emerging ``omnivorous`` waste destruction technique which uses one of the strongest known oxidants (ammonium peroxydisulfate) to convert organic solids or liquids to carbon dioxide and their mineral constituents. The process operates at ambient pressure and at moderate temperatures (80--100 C) where organic destruction is rapid without catalysts. The byproduct (ammonium sulfate) is benign and may be recycled using commercial electrolysis equipment. The authors have constructed and initially tested a bench-scale facility (batch prereactor and plug-flow reactor) which allows treatability tests on any solid or liquid organic waste surrogate, with off-gas analysis by mass spectroscopy. Shake-down tests of the plug flow reactor on model chemical ethylene glycol confirmed earlier predictive models. Pre-reactor tests on water-immiscible substances confirmed destruction of cotton rags (cellulose), kerosene, tributyl phosphate and triethylamine. The process is intended to provide an all-aqueous, ambient pressure destruction technique for difficult materials not suitable or fully accepted for conventional incineration. Such wastes include solid and liquid mixed wastes containing incinerator chars, halogenated and nitrogenated wastes, oils and greases, and chemical or biological warfare agents.
Date:
January 27, 1996
Creator:
Cooper, J.F.; Wang, F.; Krueger, R.; King, K.; Shell, T.; Farmer, J.C. et al.
Object Type:
Report
System:
The UNT Digital Library
The Gilmer Mirror (Gilmer, Tex.), Vol. 119, No. 8, Ed. 1 Saturday, January 27, 1996
Semiweekly newspaper from Gilmer, Texas that includes local, state, and national news along with advertising.
Date:
January 27, 1996
Creator:
Overton, Mac
Object Type:
Newspaper
System:
The Portal to Texas History
Multi-wavelength injection seeded mid-infrared optical parametric oscillator for DIAL
We have constructed and fielded a multi-wavelength injection seeded mid-IR OPO source for DIAL. This OPO system was built for ground based remote sensing measurements of species with both broad (300 cm{sup -1}) and narrow absorption bandwidths (0.07 cm{sup -1} FWHM). The OPO utilizes a single frequency tunable diode laser for the injection seeded signal wavelength in the region from 6400 to 6700 cm{sup -1} and an angle phase-matched 5 cm LiNbO3 crystal to provide large tuning excursions on a slow time scale. The pump was a diode pumped Nd:YAG MOPA (9398 cm{sup -1}) running at 180 Hz. This pump source was repeatedly injection seeded with a different wavelength on each of film sequential shots forming a set of three pulses having wavelength separations on the order of 0.4 cm{sup -1} at a three color set repetition rate of 60 Hz. This combination of OPO signal and pump source produced a set of three time staggered idler wavelengths separated by 0.4 cm{sup -1} with the center wavelength tunable from 2700 to 3000 cm{sup -1}. This OPO system was used in field test experiments to detect the release of chemicals from a standoff distance of 3.3 Km. We present key OPO …
Date:
January 27, 1996
Creator:
Webb, M.S.; Stanion, K.B. & Deane, D.J.
Object Type:
Article
System:
The UNT Digital Library
OPO performance with an aberrated input pump beam
The performance of an optical parametric oscillator (OPO) with non-ideal input pump fields is investigated numerically. The analysis consists of a beam propagation calculation based on Fourier methods including walk-off in the non-linear crystal coupled with the three- wave interaction in the crystal. The code is time dependent enabling analysis of laser pulses. The pump beam aberrations are described by Zernike polynomials. The OPO investigated is a LiNbO{sub 3} crystal in a flat-flat resonator. The LiNbO{sub 3} crystal is cut to produce a 1.5 {mu}m signal and 3.6 {mu}m idler from a 1.06 {mu}m input pump field. The results show that the type of aberration is significant when predicting the output performance of the OPO and not simply the beam quality or M{sup 2} angular divergence of the pump beam. While thresholds for input pump beams with M{sup 2} = 2 only increase on the order of 10% over unaberrated beams, the divergence of the output fields can be much worse than the pump beam divergence. The output beam divergence is also a function of the input pump energy. Aberrated pump fields can also lead to angular displacements between the generated signal and idler fields.
Date:
January 27, 1996
Creator:
Neumann, W. A.
Object Type:
Report
System:
The UNT Digital Library
Pawhuska Journal-Capital (Pawhuska, Okla.), Vol. 86, No. 8, Ed. 1 Saturday, January 27, 1996
Semiweekly newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 27, 1996
Creator:
Butcher, Jim
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Perry Daily Journal (Perry, Okla.), Vol. 102, No. 297, Ed. 1 Saturday, January 27, 1996
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 27, 1996
Creator:
Watson, Milo W.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0095.0177]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Robert LeCroy helps Jennifer Taylor, 7, of Norman at the trout tank at the Oklahoma City Boat Show."
Date:
January 27, 1996
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Testing and commercialization of a cotton stalk shredder and plow]. Technical progress report, October--December 1995
This quarterly report describes work on Task 1: Field test and sell prototype to Ellis Equipment, Ltd; Task 2: Design, build, and field test two prototypes; and Task 3: Produce and sell Pegasus to farmers. The equipment has been built to shred stalks, deeply till the soil, and prepare seedbeds for cotton plants. The equipment has been field tested in Australia and is currently being field tested in California and Arizona. Unexpected problems appeared with hard dry soils and this report describes improvements made.
Date:
January 27, 1996
Creator:
Thacker, G.W.
Object Type:
Report
System:
The UNT Digital Library
Visual display of reservoir parameters affecting enhanced oil recovery
This project will provide a detailed example, based on a field trial, of how to evaluate a field for EOR operations utilizing data typically available in an older field which has under gone primary development. The approach will utilize readily available, affordable PC-based computer software and analytical services. This study will illustrate the steps involved in: (1) setting up a relational database to store geologic, well-log, engineering, and production data, (2) integration of data typically available for oil and gas fields with predictive models for reservoir alteration, and (3) linking these data and models with modern computer software to provide 2-D and 3-D visualizations of the reservoir and its attributes. The techniques are being demonstrated through a field trial on a reservoir, Pioneer Field, a field that produces from the Monterey Formation, which is a candidate for thermal EOR. Technical progress is summarized for the following tasks: (1) project administration and management; (2) data collection; (3) data analysis and measurement; (4) modeling; and (5) technology transfer.
Date:
January 27, 1996
Creator:
Wood, J.R.
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 95, No. 299, Ed. 1 Tuesday, February 27, 1996
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 27, 1996
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baytown Sun (Baytown, Tex.), Vol. 74, No. 102, Ed. 1 Tuesday, February 27, 1996
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
February 27, 1996
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
Chaotic behavior control in fluidized bed systems using artificial neural network. Quarterly progress report, October 1, 1996--December 31, 1996
Pressurized fluidized-bed combustors (FBC) are becoming very popular, efficient, and environmentally acceptable replica for conventional boilers in Coal-fired and chemical plants. In this paper, we present neural network-based methods for chaotic behavior monitoring and control in FBC systems, in addition to chaos analysis of FBC data, in order to localize chaotic modes in them. Both of the normal and abnormal mixing processes in FBC systems are known to undergo chaotic behavior. Even though, this type of behavior is not always undesirable, it is a challenge to most types of conventional control methods, due to its unpredictable nature. The performance, reliability, availability and operating cost of an FBC system will be significantly improved, if an appropriate control method is available to control its abnormal operation and switch it to normal when exists. Since this abnormal operation develops only at certain times due to a sequence of transient behavior, then an appropriate abnormal behavior monitoring method is also necessary. Those methods has to be fast enough for on-line operation, such that the control methods would be applied before the system reaches a non-return point in its transients. It was found that both normal and abnormal behavior of FBC systems are chaotic. However, …
Date:
February 27, 1996
Creator:
Bodruzzaman, M. & Essawy, M.A.
Object Type:
Report
System:
The UNT Digital Library
Chickasha Daily Express (Chickasha, Okla.), Vol. 105, No. 289, Ed. 1 Tuesday, February 27, 1996
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 27, 1996
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Star (Chickasha, Okla.), Vol. 94, No. 194, Ed. 1 Tuesday, February 27, 1996
Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 27, 1996
Creator:
Settle, David
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Clipping: Homosexuality still questioned by the military]
Photocopy of a New York Times clipping about the United States military continuing to ask service members about their sexual orientations in spite of the "Don't Ask, Don't Tell" policy enacted two years prior.
Date:
February 27, 1996
Creator:
Shenon, Philip
Object Type:
Clipping
System:
The UNT Digital Library
Degradation kinetics of polymers in solution: Time-dependence of molecular weight distributions. [Quarterly report, January--March 1996]
Polymer degradation occurs when polymer chains are broken under the influence of thermal, mechanical, or chemical energy. Chain-end depolymerization and random- and midpoint-chain scission are mechanisms that have been observed in liquid-phase polymer degradation. Here we develop mathematical models, unified by continuous-mixture kinetics, to show how these different mechanisms affect polymer degradation in solution. Rate expressions for the fragmentation of molecular-weight distributions (MWDs) govern the evolution of the MWDs. The governing integro-differential equations can be solved analytically for realistic conditions. Moment analysis for first-order continuous kinetics shows the temporal behavior of MWDs. Chain-end depolymerization yields monomer product and polymer molecular-weight moments that vary linearly with time. In contrast, random- and midpoint-chain scission models display exponential time behavior. The mathematical results reasonably portray experimental observations for polymer degradation. This approach, based on the time evolution of continuous distributions of chain length or molecular weight, provides a framework for interpreting several types of polymer degradation processes.
Date:
February 27, 1996
Creator:
McCoy, B.J. & Madras, G.
Object Type:
Report
System:
The UNT Digital Library
Development of design basis capacity for SNF project systems
An estimate of the design capacity for Spent Nuclear Fuel Project systems producing Multi-Canister Overpacks is developed based on completing fuel processing in a two year period. The design basis capacity for systems relates the desired annual processing rate to potential operating inefficiencies which may be actually experienced to project a design capacity for systems. The basis for estimating operating efficiency factors is described. Estimates of the design basis capacity were limited to systems actually producing the Multi-Canister Overpack. These systems include Fuel Retrieval, K Basin SNF Vacuum Drying, Canister Storage Building support for Staging and Storage, and Hot Vacuum conditioning. The capacity of other systems are assumed to be derived from these system capacities such that systems producing a Multi-Canister Overpack are not constrained.
Date:
February 27, 1996
Creator:
Pajunen, A.L.
Object Type:
Report
System:
The UNT Digital Library
[DMA Workshop: Pages of Discovery]
A unique exploration through the captivating narratives of the DMA Journal.
Date:
1996-02-27/1996-02-29
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Electrical test structures replicated in silicon-on-insulator material
Measurements of the linewidths of submicrometer features made by different metrology techniques have frequently been characterized by differences of up to 90 nm. The purpose of the work reported here is to address the special difficulties that this phenomenon presents to the certification of reference materials for the calibration of linewidth-measurement instruments. Accordingly, a new test structure has been designed, fabricated, and undergone preliminary tests. Its distinguishing characteristics are assured cross-sectional profile geometries with known side-wall slopes, surface planarity, and compositional uniformity when it is formed in mono-crystalline material at selected orientations to the crystal lattice. To allow the extraction of electrical linewidth, the structure is replicated in a silicon film of uniform conductivity which is separated from the silicon substrate by a buried oxide layer. The utilization of a Silicon-On-Insulator (SKI) substrate further allows the selective removal of substrate material from local regions below the reference features, thus facilitating measurements by optical and electron-beam transmission microscopy. The combination of planar feature surfaces having known side-wall slopes is anticipated to eliminate factors which are believed to be responsible for methods divergence in linewidth measurements, a capability which is a prerequisite for reliable certification of the linewidths of features on reference …
Date:
February 27, 1996
Creator:
Cresswell, M. W.; Ghoshtagore, R. N.; Allen, R. A.; Linholm, L. W.; Villarrubia, J. S. & Sniegowski, J. J.
Object Type:
Report
System:
The UNT Digital Library
Ensemble: 1996-02-27 – NT Brass
NT Brass concert presented at the UNT College of Music Recital Hall.
Date:
February 27, 1996
Creator:
University of North Texas. NT Brass.
Object Type:
Sound
System:
The UNT Digital Library
Evaluating the importance of innovative heterogeneous chemistry to explain observed stratospheric ozone depletion
Currently, there is a widespread search for additional heterogeneous reactions or combination of heterogeneous and homogeneous (gas-phase) reactions that could catalytically reduce ozone to observed levels. In 1992, Burley and Johnston proposed that nitrosyl sulfuric acid (NSA) NOHSO{sub 4}, is a promising heterogeneous reactant for activating HCl in sulfuric acid particles. They list several sources for producing it in the stratosphere and they carried out thermodynamic and chemical kinetic calculations at one stratospheric altitude and at one latitude. NSA has been overlooked in all previous stratospheric model calculations, even though it has been observed in stratospheric sulfate aerosols. This study makes large scale atmospheric model calculations to test the proposal by Burley and Johnston that a promising heterogeneous process for activating HCl in sulfuric acid particles is a catalytic coupled based on nitrosyl sulfuric acid (NSA). This mechanism is examined under non-volcanic and volcanic conditions representative of the recent eruption of Mt. Pinatubo. The calculations set firm limits on the range of kinetic parameters over which this heterogeneous processes would be important in the global ozone balance, and thus is a guide for where laboratory work is needed. In addition, they have derived a preliminary time-dependent integration (1980--1994) to represent …
Date:
February 27, 1996
Creator:
Kinnison, D. E. & Connell, P. S.
Object Type:
Report
System:
The UNT Digital Library
Gas characterization system software acceptance test procedure
This document details the Software Acceptance Testing of gas characterization systems. The gas characterization systems will be used to monitor the vapor spaces of waste tanks known to contain measurable concentrations of flammable gases.
Date:
February 27, 1996
Creator:
Vo, C.V.
Object Type:
Report
System:
The UNT Digital Library