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YUCCA MOUNTAIN TOTAL SYSTEM PERFORMANCE ASSESSMENT (TSPA) FOR THE 1998 VIABILITY ASSESSMENT: MODELING APPROACH
None
Date:
March 20, 1998
Creator:
ABRAHAM VAN LUIK, MARK TYNAN
Object Type:
Report
System:
The UNT Digital Library
[HIV Health Services Planning Council]
A reactive publication from the HIV Health Services Planning Council in response to the Ryan White C.A.R.E. Act of 1990.
Date:
December 20, 1990
Creator:
AIDS Arms Network, Inc.
Object Type:
Text
System:
The UNT Digital Library
[Press release: New staff members]
Press release announcing the hires of several new staff members to the organization.
Date:
August 20, 1991
Creator:
AIDS Interfaith Network Inc.
Object Type:
Text
System:
The UNT Digital Library
Evaluation of cracking in the 241-AZ tank farm ventilation line at the Hanford Site
In the period from April to October of 1988, a series of welding operations on the outside of the AZ Tank Farm ventilation line piping at the Hanford Site produced unexpected and repeated cracking of the austenitic stainless steel base metal and of a seam weld in the pipe. The ventilation line is fabricated from type 304L stainless steel pipe of 24 inch diameter and 0.25 inch wall thickness. The pipe was wrapped in polyethylene bubble wrap and buried approximately 12 feet below grade. Except for the time period between 1980 and 1987, impressed current cathodic protection has been applied to the pipe since its installation in 1974. The paper describes the history of the cracking of the pipe, the probable cracking mechanisms, and the recommended future action for repair/replacement of the pipe.
Date:
October 20, 1999
Creator:
ANANTATMULA, R.P.
Object Type:
Article
System:
The UNT Digital Library
Bipolaron Hopping Conduction in Boron Carbides
The electrical conductivities of boron carbides, B{sub 12+x}C{sub 3{minus}x} with 0.1 < x < 1.7, between 300 and 1200K suggest the hopping of a nearly temperature-independent density of small (bi)polarons. The activation energies of the nobilities are low, {approx} 0.16 eV, and are nearly independent of the composition. At lower temperatures, conductivities have non-Arrhenius temperature dependencies and strong sensitivity to carbon concentration. Percolative aspects of low-temperature hopping are evident in this sensitivity to composition. Boron carbides' Seebeck coefficients are anomalous in that (1) they are much larger than expected from boron carbides' large carrier densities and (2) they depend only weakly on the carrier density. Carrier-induced softening of local vibrations gives contributions to the Seebeck coefficient that mirror the magnitudes and temperature dependencies found in boron carbides.
Date:
September 20, 1999
Creator:
ASELAGE, TERRENCE L.; EMIN, D. & MCCREADY, STEVEN S.
Object Type:
Article
System:
The UNT Digital Library
Developing a Panelboard Trainer Using SIMVOX and PROVOX
Several challenges existed in creating a system that would be valuable for training operators: the robustness and accuracy of the process model, the operator interface to the process, and the communication between the operator interface and the process models. Cost and implementation time were also important factors. Two possible implementation plans were examined. The first option was to develop a computer tool through which the operator could operate the process through interaction with the mouse and keyboard. The entire panel board system could be created in computer graphics and a process model attached. The second option was to construct a complete replica of the control room panelboard in a training environment. Operations personnel expressed a strong preference for creating the panel board replica. Concerns were expressed about the comfort level of the operators training on a computer tool, and the value of the operators becoming thoroughly familiar with the physical location of the equipment in the panelboard was believed to be high. It was therefore decided to create a replica of the control room panelboard.
Date:
November 20, 1995
Creator:
Abbott, L. A.
Object Type:
Article
System:
The UNT Digital Library
New Measurement of A{sub b} at the Z{sup 0} Resonance Using a Vertex Charge Technique
We present a new preliminary measurement of the parity-violation parameter A{sub b} using a self-calibrating vertex-charge technique. In the SLD experiment we observe hadronic decays of Z{sup 0} bosons produced in collisions between longitudinally polarized electrons and unpolarized positrons at the SLAC Linear Collider. A sample of b{bar b} events is selected using the topologically reconstructed mass of B hadrons. From our 1996-1998 data sample of approximately 400,000 hadronic Z{sup 0} decays, we obtain A{sub b} = 0.897 {+-} 0.027(stat){sub -0.034}{sup +0.036}(syst).
Date:
July 20, 1999
Creator:
Abe, K
Object Type:
Report
System:
The UNT Digital Library
[Letter from Julie Abel to Robert Simerly, December 20, 1995]
Photocopy of a letter from Julie Abel, Program Associate, Getty Center for Education in the Arts, to Robert Simerly, Dean of University Outreach, Florida State University. The letter is in regards to their prior correspondence about the possibility of offering FSU graduate credits to participants at the Center's national profession development program in the upcoming summer.
Date:
December 20, 1995
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
[RE: Graduate Credit for Professional Development Programs]
Photocopy of a letter from Julie Abel, Program Associate, Getty Center for Education in the Arts, to Nancy Berry, Mickey Day, Nancy MacGregor, Jeff Patchen, Marilyn Stewart, Sheila Brown, Rick Lasher, Michael Parson and Marilyn Schnake. The letter is in regards to prior discussion of possibly offering graduate credits to participants at the Center's national professional development program in the upcoming summer. cc'd on the letter, Jack Davis, Val Marmillion, David Pankratz, Kathy Talley-Jones, Cristin Leonard-Wills, Bill McCarter and Vicki Rosenberg.
Date:
December 20, 1995
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
[RE: Graduate Credit for Professional Development Programs, December 20, 1995]
Photocopy of a letter from Julie Abel, the Getty Center, to the professional development program participants, Nancy Berry, Mickey Day, Nancy MacGregor, Jeff Patchen, Marilyn Stewart, Sheila Brown, Rick Lasher, Michael Parson and Marilyn Schnake. Copied on the letter are, Jack Davis, Val Marmillion, David Pankratz, Kathy Tally-Jones, Cristin Leonard-Wills, Bill McCarter (crossed out) and Vicki Rosenberg. The note is in regards to the Center's participation being able to receive graduate credits from the professional development programs in the summer and has attached a memo to Bob Simerly to discuss their efforts.
Date:
December 20, 1995
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
[RE: RIG Faculty Members]
Photocopy of a letter from Julie Able, Program Associate, Getty Center for Education in the Arts, to RIG directors. The letter is in regards to a request from the Center staff a list of RIG faculty members to use as resources as the Center regularly uses RIG people as program consultants. The faculty list must be received by January 11, 1996. cc'd on the letter is Vicki Rosenberg.
Date:
December 20, 1995
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
[Letter to Mark Elder from Julie Anne Abel - December 20, 1993]
A letter to Mark Elder from Julie Anne Abel regarding a grant payment from the Getty Center for Education in the Arts to the North Texas Institute for Educators on the Visual Arts (NTIEVA).
Date:
December 20, 1993
Creator:
Abel, Julie A.
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Julie Anne Abel to Mark Elder, August 20, 1993]
A letter from Julie Anne Abel to Mark Elder about an enclosed strategic planning grant payment for the North Texas Institute for Educators on the Arts. The planning grant payment is not attached to the document.
Date:
August 20, 1993
Creator:
Abel, Julie Anne
Object Type:
Letter
System:
The UNT Digital Library
U.S./Russian cooperative efforts to enhance nuclear MPC&A at VNIITF, (Chelyabinsk-70)
The work described here is part of an effort called the Nuclear Materials Protection, Control, and Accounting (MPC&A) Program, a cooperative program between the US Department of Eenrgy (DOE) and Russia's Ministry of Atomic Energy (MinAtom). The objective of the program is to reduce the risk of nuclear proliferation by strengthening MPC&A systems at Russian nuclear Facilities. This paper describes that portion of the MPC&A program that is directed specifically to the needs of the All Russian Scientific Research Institute of Technical Physics (VNIITF), also called Chelyabinsk-70. A major MPC&A milestone was met at VNIITF when the MPC&A improvements were commissioned at the Pulse Research Reactor Facility in May of this year.
Date:
April 20, 1999
Creator:
Abramson, B.; Apt, K.; Blasy, J.; Bukin, D.; Churikov, Y.; Curtis, D. et al.
Object Type:
Article
System:
The UNT Digital Library
Optimum flywheel sizing for parallel and series hybrid vehicles
Flywheels have the possibility of providing high turnaround efficiency and high specific power output. These characteristics are very important for the successful manufacture of parallel and series hybrid vehicles, which have the potential for providing high fuel economy and very low emissions with range and performance comparable to today`s light-duty vehicles. Flywheels have a high specific power output, but relatively low specific energy output. Therefore, it is of importance to determine energy and power requirements for flywheels applied to light-duty vehicles. Vehicle applications that require an energy storage system with high power and low energy are likely to benefit from a flywheel. In this paper, a vehicle simulation code and a flywheel model are applied to the calculation of optimum flywheel energy storage capacity for a parallel and a series hybrid vehicle. A conventional vehicle is also evaluated as a base-case, to provide an indication of the fuel economy gains that can be obtained with flywheel hybrid vehicles. The results of the analysis indicate that the optimum flywheel energy storage capacity is relatively small. This results in a low weight unit that has a significant power output and high efficiency. Emissions generated by the hybrid vehicles are not calculated, but …
Date:
December 20, 1996
Creator:
Aceves, S. M. & Smith, J. R.
Object Type:
Article
System:
The UNT Digital Library
The Law of Church and State: The Proposed Religious Freedom Amendment, H.J. Res. 78
This report summarizes legislative developments on the proposal and briefly analyzes its likely legal effect if added to the Constitution.
Date:
April 20, 1998
Creator:
Ackerman, David M.
Object Type:
Report
System:
The UNT Digital Library
Measurement of injectivity indexes in geothermal wells with two permeable zones
Injectivity tests in wells with two permeable zones and internal flow is analyzed in order to include the usually severe thermal transient effects. A theoretical analysis is performed and a method devised to obtain information from the thermal transient, provided that temperature is measured simultaneously with pressure. The technique is illustrated with two real tests performed at Miravalles, Costa Rica. It allows to estimate total injectivity index as well as the injectivity index of each one of the two zones separately. Correct position of measuring tools and nature of spontaneous internal flow is also discussed.
Date:
January 20, 1994
Creator:
Acuna, Jorge A.
Object Type:
Article
System:
The UNT Digital Library
National Ignition Facility subsystem design requirements final optics assembly subsystem SSDR 1.8.7
This SSDR establishes the performance, design, development and test requirements for the Final Optic Assembly (FOA). The FOA (WBS 1.8.7) as part of the Target Experimental System (1.8) includes vacuum windows, frequency conversion crystals, focus lens, debris shields and supporting mechanical equipment.
Date:
October 20, 1996
Creator:
Adams, C.
Object Type:
Report
System:
The UNT Digital Library
The Paducah Post (Paducah, Tex.), Vol. 84, No. 18, Ed. 1 Wednesday, June 20, 1990
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
June 20, 1990
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
Fifteenth Street News (Midwest City, Okla.), Vol. 21, No. 12, Ed. 1 Friday, November 20, 1992
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
November 20, 1992
Creator:
Addington, Kathy
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
An advanced control system for fine coal flotation
None
Date:
December 20, 1999
Creator:
Adel, G. T. & Luttrell, G. H.
Object Type:
Report
System:
The UNT Digital Library
Development of a video-based slurry sensor for on-line ash analysis. Fourth quarter technical progress report, July 1--September 30, 1995
Automatic control of fine coal cleaning circuits has traditionally been limited by the lack of sensors for on-line ash analysis. Although several nuclear-based analyzers are available, none have seen widespread acceptance. This is largely due to the fact that nuclear sensors are expensive and tend to be influenced by changes in seam type and pyrite content. Recently, researchers at VPI and SU have developed an optical sensor for phosphate analysis. The sensor uses image processing technology to analyze video images of phosphate ore. It is currently being used by Texasgulf for off-line analysis of dry flotation concentrates. The primary advantages of optical sensors over nuclear sensors are that they are significantly cheaper, are not subject to measurement variations due to changes in high atomic number minerals, are inherently safer and require no special radiation permitting. The purpose of this work is to apply the knowledge gained in the development of an optical phosphate analyzer to the development of an on-line ash analyzer for fine coal slurries. During the past quarter, a study was conducted to determine if monochromatic illumination could be used as a means of enhancing the differences observed between coal and mineral matter under reflected light. After extensive …
Date:
October 20, 1995
Creator:
Adel, G. T. & Luttrell, G. H.
Object Type:
Report
System:
The UNT Digital Library
Vocational Education in Prisons: An Investment for Yesterday's At-Risk Youth
Evaluation report documenting a study by the Texas Council on Vocational Education to assess vocational education within the Texas prison systems. The Council concluded that anyone in Texas prisons should have access to vocational education and the report includes recommendations about changes or improvements going forward.
Date:
December 20, 1992
Creator:
Advisory Council for Technical-Vocational Education in Texas
Object Type:
Report
System:
The Portal to Texas History
Pinhole closure measurements
Spatial-filter pinholes and knife-edge samples were irradiated in vacuum by 1053-nm, 5-20 ns pulses at intensities to 500 GW/cm<sup2</sup>. The knife-edge samples were fabricated of plastic, carbon, ahnuinum, stainless steel, molybdenum, tantalum, gold and an absorbing glass. Time-resolved two-beam interferometry with a 40-ns probe pulse was used to observe phase shifts in the expanding laser-induced plasma. For all of these materials, at any time during square-pulse irradiation, the phase shift fell exponentially with distance from the edge of the sample. The expansion was characterized by the propagation velocity V<sub>2x</sub> of the contour for a 2(pi) phase shift. To within experimental error, V<sub>2x</sub>, was constant during irradiation at a particular intensity, and it increased linearly with intensity for intensities <300 GW/cn<sup>2</sup>. For metal samples, V, exhibited an approximate M<sup>-0.5</sup> dependence where M is the atomic mass. Plasmas of plastic, carbon and absorbing glass produced larger phase shifts, and expanded more rapidly, than plasmas of the heavy metals. The probe beam and interferometer were also used to observe the closing of pinholes. With planar pinholes, accumulation of on-axis plasma was observed along with the advance of plasma away from the edge of the hole. On-axis closure was not observed in square, 4-leaf …
Date:
July 20, 1998
Creator:
Afeyan, B. B.; Boley, C. D.; Estabrook, K. G.; Kirkwood, R. K.; Milam, D.; Murray, J. E. et al.
Object Type:
Article
System:
The UNT Digital Library