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[Meeting agenda outline with handwritten notes]
A meeting outline for a board of directors meeting dated April 17, 1990; includes handwritten notes in red ink.
Date:
April 27, 1990
Creator:
AIDS ARMS Network, Inc.
Object Type:
Text
System:
The UNT Digital Library
[Receipt #2]
A receipt of a payment from the AIDS ARMS Network, Inc. (Prism Health North Texas) to the AIDS Resource Center (Resource Center Dallas).
Date:
February 27, 1990
Creator:
AIDS ARMS Network, Inc.
Object Type:
Clipping
System:
The UNT Digital Library
[Letter: Nelson to Maison]
A letter from Don Maison, from the AIDS Service of Dallas, to Mary Klapperich, from the State Bar of Texas.
Date:
July 27, 1994
Creator:
AIDS Services of Dallas
Object Type:
Letter
System:
The UNT Digital Library
Fundamental studies of fusion plasmas
Work on ICRF interaction with the edge plasma is reported. ICRF generated convective cells have been established as an important mechanism for influencing edge transport and interaction with the H-mode, and for controlling profiles in the tokamak scrape-off-layer. Power dissipation by rf sheaths has been shown to be significant for some misaligned ICRF and IIBW antenna systems. Near-field antenna sheath work has been extended to the far-field case, important for experiments with low single pass absorption. Impurity modeling and Faraday screen design support has been provided for the ICRF community. In the area of core-ICRF physics, the kinetic theory of heating by applied ICRF waves has been extended to retain important geometrical effects relevant to modeling minority heated tokamak plasmas, thereby improving on the physics base that is standard in presently employed codes. Both the quasilinear theory of ion heating, and the plasma response function important in wave codes have been addressed. In separate studies, it has been shown that highly anisotropic minority heated plasmas can give rise to unstable field fluctuations in some situations. A completely separate series of studies have contributed to the understanding of tokamak confinement physics. Additionally, a diffraction formalism has been produced which will be …
Date:
April 27, 1993
Creator:
Aamodt, R. E.; Catto, P. J.; D'Ippolito, D. A.; Myra, J. R. & Russell, D. A.
Object Type:
Report
System:
The UNT Digital Library
Fundamental studies of fusion plasmas. Annual performance report
Work on ICRF interaction with the edge plasma is reported. ICRF generated convective cells have been established as an important mechanism for influencing edge transport and interaction with the H-mode, and for controlling profiles in the tokamak scrape-off-layer. Power dissipation by rf sheaths has been shown to be significant for some misaligned ICRF and IIBW antenna systems. Near-field antenna sheath work has been extended to the far-field case, important for experiments with low single pass absorption. Impurity modeling and Faraday screen design support has been provided for the ICRF community. In the area of core-ICRF physics, the kinetic theory of heating by applied ICRF waves has been extended to retain important geometrical effects relevant to modeling minority heated tokamak plasmas, thereby improving on the physics base that is standard in presently employed codes. Both the quasilinear theory of ion heating, and the plasma response function important in wave codes have been addressed. In separate studies, it has been shown that highly anisotropic minority heated plasmas can give rise to unstable field fluctuations in some situations. A completely separate series of studies have contributed to the understanding of tokamak confinement physics. Additionally, a diffraction formalism has been produced which will be …
Date:
April 27, 1993
Creator:
Aamodt, R. E.; Catto, P. J.; D`Ippolito, D. A.; Myra, J. R. & Russell, D. A.
Object Type:
Report
System:
The UNT Digital Library
[Letter from Julie Abel to Jack Davis, March 27, 1997]
Photocopy of a letter from Julie Abel, Program Associate, Getty Center for Education in the Arts, to Jack Davis, co-director of North Texas Institute for Educators on the Visual Arts. In discussion about the remaining funds from the Getty Center Education Institute grant to the RIG consortium be awarded to the North Texas Institute for Educators on the Visual Arts program. Abel makes a list of issues that need to be discussed and would like to meet up with Davis to discuss them.
Date:
March 27, 1997
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
The development of precipitated iron catalysts with improved stability; Final report, September 1987--September 1992
Precipitated iron catalysts are expected to be used in next generation slurry reactors for large-scale production of transportation fuels from synthesis gas. These reactors are expected to operate at higher temperatures and lower H{sub 2}:CO ratios relative to the Sasol Arge reactor (Table 1A). The feasibility of using iron catalysts has been demonstrated under relatively mild Arge-type conditions but not under more severe slurry conditions. Possibly, an improvement in catalytic stability will be needed to make iron catalysts suitable for slurry operation. This program was aimed at identifying the chemical principles governing the deactivation of precipitated iron catalysts during Fischer-Tropsch synthesis and use of these chemical principles in the design of more stable catalysts. A new precipitated Fe catalyst was developed in this program for slurry reactor operation. The new Fe catalyst is predicted to perform slightly below the performance targets for slurry bubble column operation. Stability targets appear to be achievable. This catalyst did not noticeably deactivate during 1,740 hours on-stream. Compared to the selectivity target, an excess of 2% C{sub 1} + C{sub 2} was formed at 265{degrees}C. Based on the initial catalyst inventory in the autoclave, the catalyst seems to be short of the activity target by …
Date:
December 27, 1993
Creator:
Abrevaya, H.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.OVZ001.9254]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "(aerial photo looking down of a building's front side blown off, surrounding buildings in view, and more)"
Date:
April 27, 1995
Creator:
Ace Aerial
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.OVZ001.9255]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "(aerial of a building's front side blown off, surrounding buildings in view, and more)"
Date:
April 27, 1995
Creator:
Ace Aerial
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.OVZ001.9256]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "(aerial photo of the Murrah building with the Regency and St. Joseph church on the other side)"
Date:
April 27, 1995
Creator:
Ace Aerial
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Analysis and optimization of an adsorption air conditioner for electric vehicle applications
This paper shows an analysis of the applicability of an adsorption system for electric vehicle (EV) air conditioning. Adsorption systems are designed and optimized to provide the required cooling for four combinations of vehicle characteristics and driving cycles. The resulting adsorption systems are compared with vapor compression air conditioners that can satisfy the cooling load. The objective function is the overall system weight, which includes the cooling system weight and the weight of the battery necessary to provide energy for air conditioner operation. The system with the minimum overall weight is considered to be the best. The results show the optimum values of all the variables, as well as temperatures and amounts adsorbed, for the adsorption and desorption processes. The results indicate that, for the conditions analyzed in this paper, vapor compression air conditioners are superior to adsorption systems, not only because they are lighter, but also because they have a higher COP and are more compact.
Date:
July 27, 1994
Creator:
Aceves, S. M.
Object Type:
Article
System:
The UNT Digital Library
Adsorption air conditioner for electric vehicle applications. Revision 1
This paper shows an analysis of the applicability of an adsorption system for electric vehicle (EV) air conditioning. Adsorption systems are designed and optimized to provide the required cooling for four combinations of vehicle characteristics and driving cycles. The resulting adsorption systems are compared with vapor compression air conditioners that can satisfy the cooling load. The objective function is the overall system weight, which includes the cooling system weight and the weight of the battery necessary to provide energy for air conditioner operation. The system with the minimum overall weight is considered to be the best, because a lower weight results in an increased vehicle range. The results indicate that, for the conditions analyzed in this paper, vapor compression air conditioners are superior to adsorption systems not only because they are lighter, but also because they have a higher COP and are more compact.
Date:
July 27, 1994
Creator:
Aceves, S.M.
Object Type:
Article
System:
The UNT Digital Library
Load calculation and system evaluation for electric vehicle climate control
Providing air conditioning for electric vehicles (EVs) represents an important challenge, because vapor compression air conditioners, which are common in gasoline powered vehicles, may consume a substantial part of the total energy stored in the EV battery. This report consists of two major parts. The first part is a cooling and heating load calculation for electric vehicles. The second part is an evaluation of several systems that can be used to provide the desired cooling and heating in EVs. Four cases are studied. Short range and full range EVs are each analyzed twice, first with the regular vehicle equipment, and then with a fan and heat reflecting windows, to reduce hot soak. Recent legislation has allowed the use of combustion heating whenever the ambient temperature drops below 5{degrees}C. This has simplified the problem of heating, and made cooling the most important problem. Therefore, systems described in this project are designed for cooling, and their applicability to heating at temperatures above 5{degrees}C is described. If the air conditioner systems cannot be used to cover the whole heating load at 5{degrees}C, then the vehicle requires a complementary heating system (most likely a heat recovery system or electric resistance heating). Air conditioners are …
Date:
October 27, 1993
Creator:
Aceves-Saborio, S. & Comfort, W. J., III
Object Type:
Report
System:
The UNT Digital Library
The Paducah Post (Paducah, Tex.), Vol. 84, No. 19, Ed. 1 Wednesday, June 27, 1990
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
June 27, 1990
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
Remote nuclear screening system for hostile environments
A remote measurement system has been constructed for in situ gamma and beta isotopic characterization of highly radioactive nuclear material in hostile environments. A small collimated, planar CdZnTe detector is used for gamma-ray spectroscopy. Spectral resolution of 2% full width at half maximum at 662 kiloelectronvolts has been obtained remotely using rise time compensation and limited pulse shape discrimination, Isotopc measurement of high-energy beta emitters was accomplished with a ruggedized, deeply depleted, surface barrier silicon dictator. The primary function of the remote nuclear screening system is to provide fast qualitative and quantitative isotopic assessment of high-level radioactive material.
Date:
February 27, 1996
Creator:
Addleman, R. S.; Beck, M. A.; Blewett, G. R.; Selle, E. R.; McClellan, C. S.; Dodd, D. A. et al.
Object Type:
Report
System:
The UNT Digital Library
An Advanced Control System for Fine Coal Flotation. Sixth quarter, technical progress report, July 1-September 30, 1997
Over the past thirty years, process control has spread from the chemical industry into the fields of mineral and coal processing. Today, process control computers, combined with improved instrumentation, are capable of effective control in many modem flotation circuits. Unfortunately, the classical methods used in most control strategies have severe limitations when used in froth flotation. For example, the nonlinear nature of the flotation process can cause single-input, single-output lines to battle each other in attempts to achieve a given objective. Other problems experienced in classical control schemes include noisy signals from sensors and the inability to measure certain process variables. For example, factors related to ore type or water chemistry, such as liberation, froth stability, and floatability, cannot be measured by conventional means. The purpose of this project is to demonstrate an advanced control system for fine coal flotation. The demonstration is being carried out at an existing coal preparation plant by a team consisting of Virginia Polytechnic Institute and State University (VPI&SU) as the prime contractor and J.A. Herbst and Associates as a subcontractor. The objectives of this work are: (1) to identify through sampling, analysis, and simulation those variables which can be manipulated to maintain grades, recoveries, …
Date:
October 27, 1997
Creator:
Adel, G. T. & Luttrell, G. H.
Object Type:
Report
System:
The UNT Digital Library
Scaling behavior in interference lithography
Interference lithography is an emerging, technology that provides a means for achieving high resolution over large exposure areas (approximately 1 m{sup 2}) with virtually unlimited depth of field. One- and two-dimensional arrays of deep submicron structures can be created using near i-line wavelengths and standard resist processing. In this paper, we report on recent advances in the development of this technology, focusing, in particular, on how exposure latitude and resist profile scale with interference period We present structure width vs dose curves for periods ranging from 200 nm to 1 um, demonstrating that deep submicron structures can be generated with exposure latitudes exceeding 30%. Our experimental results are compared to simulations based on PROLITIV2.
Date:
February 27, 1998
Creator:
Agayan, R.R.; Banyai, W.C. & Fernandez, A.
Object Type:
Article
System:
The UNT Digital Library
Phase Diagram of Iron, Revised-Core Temperatures
Shock-wave experiments on iron preheated to 1,573 K conducted from 14 to 73 GPa, yield new data for sound velocities of the {gamma}- and liquid-phases. Melting was observed in the highest pressure ({approximately} 71 {+-} 2 GPa) experiments at calculated shock temperatures of 2,775 {+-} 160 K. This single crossing of the {gamma}-liquid boundary measured here agrees closely with the {gamma}-iron melting line determined by Boehler [1993], Saxena et al. [1993], and Jephcoat and Besedin [1997]. This {gamma}-iron melting curve is {approximately} 300 C lower than that of Shen et al. [1998b] at 80 GPa.
Date:
January 27, 1999
Creator:
Ahrens, T.J.; Chen, G.Q. & Holland, K.G.
Object Type:
Article
System:
The UNT Digital Library
The origin and evolution of the optics specifications for the National Ignition Facility
In the second half of the 1990`s, LLNL and others will be designing and beginning construction of the National Ignition Facility (NIF). At more than 10 times the power and size of the Nova laser system, this new laser will be capable of producing the worlds first controlled fusion ignition and burn, completing a vital milestone on the path to Fusion Energy. In order to optimize the performance of the laser system for a minimum cost, the designers have been conducting a campaign to properly specify the optical properties of the more than 7,500 large optical components to be deployed in the NIF. The draft optics specifications derived from this effort will be presented. The evolution of these specifications, both in language and in content, will be discussed, specifically transmitted wavefront (both P-V and PSD), scratch/dig, surface roughness, bubbles and inclusions specifications.
Date:
June 27, 1995
Creator:
Aikens, D.
Object Type:
Report
System:
The UNT Digital Library
Derivation of preliminary specifications for transmitted wavefront and surface roughness for large optics used in inertial confinement fusion
In preparation for beginning the design of the Nation Ignition Facility (NIF) in the United States and the Laser Mega-Joule (LMJ) in France, the authors are in the process of deriving new specifications for the large optics required for these facilities. Traditionally, specifications for transmitted wavefront and surface roughness of large ICF optics have been based on parameters which were easily measured during the early 1980`s, such as peak-to-valley wavefront error (PV) and root-mean-square (RMS) surface roughness, as well as wavefront gradients in terms of waves per cm. While this was convenient from a fabrication perspective, since the specifications could be easily interpreted by fabricators in terms which were understood and conventionally measurable, it did not accurately reflect the requirements of the laser system. For the NIF and LMJ laser systems, the authors use advances in metrology and interferometry and an enhanced understanding of laser system performance to derive specifications which are based on power spectral densities (PSD`s.) Such requirements can more accurately reflect the requirements of the laser system for minimizing the amplitude of mid- and high-spatial frequency surface and transmitted wavefront errors, while not over constraining the fabrication in terms of low spatial frequencies, such as residual coma …
Date:
June 27, 1995
Creator:
Aikens, D.; Roussel, A. & Bray, M.
Object Type:
Report
System:
The UNT Digital Library
The regulatory compliance plan for the Minimum Additive Waste Stabilization (MAWS) Program
The Fernald Environmental Management Project (FEMP) has initiated the Minimum Additive Waste Stabilization (MAWS) Program to demonstrate and evaluate integrated treatment of the FEMP site`s Operable Unit 1 contaminated soils and sludges. The demonstration will require on-site operation of an integrated treatment system consisting of soil washing, water treatment by ion exchange, and vitrification of all contaminated solid wastes at a rate of 300 kg per day. Compliance with all relevant environmental regulations is a major priority of this program. Relevant regulatory requirements come under the jurisdiction of the US Environmental Protection Agency (US EPA), the Ohio Environmental Protection Agency (Ohio EPA), and the Department of Energy (DOE). The plethora of potentially applicable regulations were reviewed and an efficient regulatory compliance strategy developed. This strategy was documented in the MAWS Regulatory Compliance Plan which was presented to the regulatory agencies as a reasonable working plan. The FEMP has found the development of a comprehensive, organized regulatory plan to be critical to the successful implementation of integrated demonstration projects such as the MAWS Program. This paper discusses the approaches used in the MAWS Regulatory Compliance Plan and highlights which could prove useful for others that want to approach the DOE and/or …
Date:
January 27, 1993
Creator:
Akgunduz, N. K.; Gimpel, R. F. & Finger, S. M.
Object Type:
Article
System:
The UNT Digital Library
Z-Pinch Driven Inertial Confinement Fusion Target Physics Research at Sandia National Laboratories
Three hohlraum concepts are being pursued at Sandia National Laboratories (SNL) to investigate the possibility of using pulsed power driven magnetic implosions (z-pinches) to drive high gain targets capable of yields in the range of 200-1000 MJ. This research is being conducted on SNL'S.Z facility that is capable of driving peak currents of 20 MA in z-pinch loads producing implosion velocities as high as 7.5X 107 cm/s, x-ray energies approaching 2 MJ, and x-ray powers exceeding 200 TW. This paper will discuss each of these hohlraum concepts and will overview the experiments that have been conducted on these systems to date.
Date:
October 27, 1998
Creator:
Alberts, T. E.; Asay, J. R.; Baca, P. M.; Baker, K. L.; Breeze, S. P.; Chandler, G. A. et al.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0150.0711]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mesmerized by movie characters C3PO and E. T. are these youngsters, below left, at Edgemere Elementary School in Oklahoma City ..."
Date:
October 27, 1992
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0960.0367]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The Regency Towers apartment building at NW 5th and Hudson gets a new lease on life with a paint job."
Date:
May 27, 1992
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History