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58
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49
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28
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11
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8
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Plutonium silicate alteration phases produced by aqueous corrosion of borosilicate glass.
Borosilicate glasses loaded with {approx}10 wt % plutonium were found to produce plutonium-silicate alteration phases upon aqueous corrosion under a range of conditions. The phases observed were generally rich in lanthanide (Ln) elements and were related to the lanthanide orthosilicate phases of the monoclinic Ln{sub 2}SiO{sub 5} type. The composition of the phases was variable regarding [Ln]/[Pu] ratio, depending upon type of corrosion test and on the location within the alteration layer. The formation of these phases likely has implications for the incorporation of plutonium into silicate alteration phases during corrosion of titanate ceramics, high-level waste glasses, and spent nuclear fuel.
Date:
November 22, 1999
Creator:
Fortner, J. A.; Mertz, C. J.; Bakel, A. J.; Finch, R. J. & Chamerlain, D. B.
Object Type:
Article
System:
The UNT Digital Library
Pressure Effects Analysis of National Ignition Facility Capacitor Module Events
Capacitors and power conditioning systems required for the National Ignition Facility (NIF) have experienced several catastrophic failures during prototype demonstration. These events generally resulted in explosion, generating a dramatic fireball and energetic shrapnel, and thus may present a threat to the walls of the capacitor bay that houses the capacitor modules. The purpose of this paper is to evaluate the ability of the capacitor bay walls to withstand the overpressure generated by the aforementioned events. Two calculations are described in this paper. The first one was used to estimate the energy release during a fireball event and the second one was used to estimate the pressure in a capacitor module during a capacitor explosion event. Both results were then used to estimate the subsequent overpressure in the capacitor bay where these events occurred. The analysis showed that the expected capacitor bay overpressure was less than the pressure tolerance of the walls. To understand the risk of the above events in NIF, capacitor module failure probabilities were also calculated. This paper concludes with estimates of the probability of single module failure and multi-module failures based on the number of catastrophic failures in the prototype demonstration facility.
Date:
November 22, 1999
Creator:
Brereton, S; Ma, C; Newton, M; Pastrnak, J; Price, D & Prokosch, D
Object Type:
Article
System:
The UNT Digital Library
Pulsed Power Driven Fusion Energy
Pulsed power is a robust and inexpensive technology for obtaining high powers. Considerable progress has been made on developing light ion beams as a means of transporting this power to inertial fusion capsules. However, further progress is hampered by the lack of an adequate ion source. Alternatively, z-pinches can efficiently convert pulsed power into thermal radiation, which can be used to drive an inertial fusion capsule. However, a z-pinch driven fusion explosion will destroy a portion of the transmission line that delivers the electrical power to the z-pinch. They investigate several options for providing standoff for z-pinch driven fusion. Recyclable Transmission Lines (RTLs) appear to be the most promising approach.
Date:
November 22, 1999
Creator:
SLUTZ,STEPHEN A.
Object Type:
Article
System:
The UNT Digital Library
Rapid Bioassessment Methods for Assessing Stream Macroinvertebrate Community on the Savannah River Site
Macroinvertebrate sampling was performed at 16 locations in the Savannah River Site (SRS) streams using Hester-Dendy multiplate samplers and EPA Rapid Bioassessment Protocols (RBP). Some of the sampling locations were unimpacted, while other locations had been subject to various forms of perturbation by SRS activities. In general, the data from the Hester-Dendy multiplate samplers were more sensitive at detecting impacts than were the RBP data. We developed a Biotic Index for the Hester-Dendy data which incorporated eight community structure, function, and balance parameters. when tested using a data set that was unrelated to the data set that was used in developing the Biotic Index, the index was very successful at detecting impact.
Date:
November 22, 1999
Creator:
Specht, Winona L.
Object Type:
Report
System:
The UNT Digital Library
Record of Technical Change No.1 for ``Fluid Management Plan for the Project Shoal Area Off-sites Project''
This Record of Technical Change provides updates to the technical information included in the ``Fluid Management Plan for the Project Shoal Area Off-sites Project,'' April 1999
Date:
November 22, 1999
Creator:
/NV, USDOE
Object Type:
Report
System:
The UNT Digital Library
The Rice Thresher (Houston, Tex.), Vol. 87, No. 12, Ed. 1 Monday, November 22, 1999
A weekly student newspaper from the Rice University in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
November 22, 1999
Creator:
McAlister, Jett & Tam, Mariel
Object Type:
Newspaper
System:
The Portal to Texas History
Salaries and Allowances: The Congress
None
Date:
November 22, 1999
Creator:
Dwyer, Paul E.
Object Type:
Report
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 84, No. 59, Ed. 1 Monday, November 22, 1999
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 22, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
L-shell emission from high-Z solid targets by intense (10{sup 19}W/cm{sup 2}) irradiation with a 248nm laser
Efficient (1.2% yield) multikilovolt x-ray emission from Ba(L) (2.4--2.8{angstrom}) and Gd(L) (1.7--2.1{angstrom}) is produced by ultraviolet (248nm) laser-excited BaF{sub 2} and Gd solids. The high efficiency is attributed to an inner shell-selective collisional electron ejection.
Date:
November 22, 1999
Creator:
Nelson, T. R.; Borisov, A. B.; Boyer, K.; Schroeder, W. A.; Santoro, J.; Van Tassle, A. J. et al.
Object Type:
Article
System:
The UNT Digital Library
A simple way of characterizing x-ray downwards-deflecting mirror-bender assemblies using the long trace profiler
A simple device composed of a modular double-pentaprism system that enables the long trace profiler (LTP) to measure mirrors in nonconventional ways, i.e., in the vertical-downward and sideways positions, has been devised and implemented in the Advanced Photon Source (APS) long trace profiler (LTP II). The systems is very useful in calibrating mirror-bender assemblies. This paper describes the system and gives results of measurements performed with it on a mirror used at the APS.
Date:
November 22, 1999
Creator:
Assoufid, L. & Her, P.
Object Type:
Article
System:
The UNT Digital Library
SUBSURFACE EMPLACEMENT TRANSPORTATION SYSTEM
The objective of this analysis is to identify issues and criteria that apply to the design of the Subsurface Emplacement Transportation System (SET). The SET consists of the track used by the waste package handling equipment, the conductors and related equipment used to supply electrical power to that equipment, and the instrumentation and controls used to monitor and operate those track and power supply systems. Major considerations of this analysis include: (1) Operational life of the SET; (2) Geometric constraints on the track layout; (3) Operating loads on the track; (4) Environmentally induced loads on the track; (5) Power supply (electrification) requirements; and (6) Instrumentation and control requirements. This analysis will provide the basis for development of the system description document (SDD) for the SET. This analysis also defines the interfaces that need to be considered in the design of the SET. These interfaces include, but are not limited to, the following: (1) Waste handling building; (2) Monitored Geologic Repository (MGR) surface site layout; (3) Waste Emplacement System (WES); (4) Waste Retrieval System (WRS); (5) Ground Control System (GCS); (6) Ex-Container System (XCS); (7) Subsurface Electrical Distribution System (SED); (8) MGR Operations Monitoring and Control System (OMC); (9) Subsurface Facility …
Date:
November 22, 1999
Creator:
Wilson, T. & Novotny, R.
Object Type:
Report
System:
The UNT Digital Library
Supersymmetry searches at the Tevatron in Run I and Run II
The authors review the searches for supersymmetric particles achieved by the CDF and D0 collaborations at the p{bar p} Tevatron collider at FNAL, at {radical}s = 1.8 TeV and with a total integrated luminosity of 110 pb{sup {minus}1}, per experiment. The prospects for the forthcoming run at {radical}s = 2 TeV and an integrated luminosity reaching ultimately at least 20 fb{sup {minus}1}, are also discussed.
Date:
November 22, 1999
Creator:
Savoy-Navarro, A.
Object Type:
Article
System:
The UNT Digital Library
Supplemental Security Income: Incentive Payments Have Reduced Benefit Overpayments to Prisoners
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the impact incentive payment legislation for correctional facilities had on the Social Security Administration's (SSA) Supplemental Security Income (SSI) program, focusing on: (1) how many correctional facilities signed incentive payment agreements, how many benefit suspensions did SSA make, and what amount of overpayments did SSA identify and prevent at these facilities; (2) how many of the incentive payment agreements represented new reporting commitments that SSA did not have before the authorization of incentive payments, and what were the results at facilities that made these new commitments; and (3) what other benefits has the legislation produced."
Date:
November 22, 1999
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
TEAM-like workshops in related areas : cooperation in modeling for competitive industries.
The TEAM Workshops originated from problems in fusion research. Based on recent observations regarding automotive modeling, the author asks whether TEAM-like workshops, and the accompanying cooperation among modelers, are of value in areas of economic competition.
Date:
November 22, 1999
Creator:
Turner, L. R.
Object Type:
Article
System:
The UNT Digital Library
The triangle anomaly in the tripple-regge limit
The U(l) triangle anomaly is present, as an infra-red divergence, in the six-reggeon triple-regge interaction vertex obtained from a maximally non-planar Feynman diagram in the full triple-regge limit of three-to-three quark scattering.
Date:
November 22, 1999
Creator:
White, A. R.
Object Type:
Article
System:
The UNT Digital Library
X-ray interferometry development at the Advanced Photon Source.
In this paper, we report initial test results of a four-bounce Bragg reflection X-ray interferometer at 7.46 keV and, for the first time to our knowledge, at the higher energy of 14.91 keV where the spectral acceptance is much smaller.
Date:
November 22, 1999
Creator:
Fezzaa, K. & Lee, W. K.
Object Type:
Article
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 29, No. 7, Ed. 1 Friday, October 22, 1999
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 22, 1999
Creator:
Ming, Holly
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Aggregation of dialkyl-substituted diphosphonic acids and its effect on metal ion extraction.
Solvent extraction reagents containing the diphosphonic acid group exhibit an extraordinary affinity for tri-, tetra- and hexavalent actinides. Their use has been considered for actinide separation and pre-concentration procedures. Solvent extraction data obtained with P,P{prime}-di(2-ethylhexyl) methane-, ethane- and butanediphosphonic acids exhibit features that are difficult to explain without Knowledge of the aggregation state of the extractants. Information about the aggregation of the dialkyl-substituted diphosphonic acids in aromatic diluents has been obtained using the complementary techniques of vapor pressure osmometry (VPO), small angle neutron scattering (SANS), infrared spectroscopy and molecular mechanics. The results from these techniques provide an understanding of the aggregation behavior of these extractants that is fully compatible with the solvent extraction data. The most important results and their relevance to solvent extraction are reviewed in this paper.
Date:
October 22, 1999
Creator:
Chiarizia, R.; Barrans, R. E., Jr.; Ferraro, J. R. Herlinger, A. W. & McAlister, D. R.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 100, No. 184, Ed. 1 Friday, October 22, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 22, 1999
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The APS control system network upgrade.
When it was installed,the Advanced Photon Source (APS) control system network was at the state-of-the-art. Different aspects of the system have been reported at previous meetings [1,2]. As loads on the controls network have increased due to newer and faster workstations and front-end computers, we have found performance of the system declining and have implemented an upgraded network. There have been dramatic advances in networking hardware in the last several years. The upgraded APS controls network replaces the original FDDI backbone and shared Ethernet hubs with redundant gigabit uplinks and fully switched 10/100 Ethernet switches with backplane fabrics in excess of 20 Gbits/s (Gbps). The central collapsed backbone FDDI concentrator has been replaced with a Gigabit Ethernet switch with greater than 30 Gbps backplane fabric. Full redundancy of the system has been maintained. This paper will discuss this upgrade and include performance data and performance comparisons with the original network.
Date:
October 22, 1999
Creator:
Sidorowicz, K. v.; Leibfritz, D. & McDowell, W. P.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 306, Ed. 1 Friday, October 22, 1999
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
October 22, 1999
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 94, No. 85, Ed. 1 Friday, October 22, 1999
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
October 22, 1999
Creator:
Keasling, Edna & Fierro, Jennifer
Object Type:
Newspaper
System:
The Portal to Texas History
The Brand (Abilene, Tex.), Vol. 87, No. 6, Ed. 1, Friday, October 22, 1999
Weekly student newspaper from Hardin-Simmons University in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
October 22, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 104, No. 85, Ed. 1 Friday, October 22, 1999
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
October 22, 1999
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History