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Application of EQ3/6 to modeling of nuclear waste glass behavior in a tuff repository
Modeling of glass degradation based on sound geochemical principles appears to be possible with revisions to EQ3/6. Realistic source terms for several repository scenarios may be generated with such a model. One scenario which appears very likely and which is also amenable to modeling using EQ3/6 is that in which an intact but perforated canister holds water in contact with waste glass. The water overflows continuously or periodically, allowing radionuclides to come in contact with repository rock. This isolated-type scenario will be the first realistic modeling effort because it limits complex interactions between rock and glass. However, EQ3/6 modeling should be possible even for very complicated scenarios if sufficient experimental data are available on rates and thermodynamics. This will be the limiting factor in progress toward modeling the complete system.
Date:
May 1, 1986
Creator:
Aines, R. D.
Object Type:
Report
System:
The UNT Digital Library
Estimates of radionuclide release from glass waste forms in a tuff repository and the effects on regulatory compliance
This paper discusses preliminary estimates of the release of radionuclides from waste packages containing glass-based waste forms under the expected conditions at Yucca Mountain. These estimates can be used to evaluate the contribution of waste package performance toward meeting repository regulatory restrictions on radionuclide release. Glass waste will be held in double stainless steel canisters. After failure of the container sometime after the 300 to 1000 year containment period, the open headspace in these cans will provide the only area where standing water can accumulate and react with the glass. A maximum release rate of 0.177 g/m{sup 2} x year or 1.3 grams per year was obtained. Normalized loss of 1.3 grams per year corresponds to 0.08 parts in 100,000 per year of the 1660 kg reference weight of DWPF glass.
Date:
April 1, 1986
Creator:
Aines, R. D.
Object Type:
Article
System:
The UNT Digital Library
Airman, Volume 30, Number 7, July 1986
Monthly publication of the U.S. Air Force meant to provide information for Air Force personnel. It includes information about news, events, and other activities, as well as articles, photographs, artwork, and opinion pieces submitted by airmen.
Date:
July 1986
Creator:
Air Force Service Information and News Center (U.S.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
A Quasi-Experimental Study of Behavior in the Professional Negotiation Process: An Analysis of the Nigerian Setting
The problem investigated by this study was that of understanding types of behaviors exhibited by participants in negotiations processes and impact of behaviors on collective bargaining in Nigeria. The study's three purposes were to describe the nature and extent of interpersonal conflict that occurs in collective bargaining, to determine the consequences that stem from such conflict, and to suggest the behaviors and performances during the face-to-face negotiations that should exist to enhance labor-management relations in Nigerian public education. This study examined behavior in negotiations by using simulation, i.e., a quasiexperimental method. Four outcomes of negotiations--time required to reach agreement, terms of agreements, verbal behavior exhibited during negotiations, and satisfaction derived by negotiators in negotiations—were examined.
Date:
August 1986
Creator:
Akiri, Agharuwhe Anthony, 1950-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Insider Protection: A Report Card
Enhanced security measures against external threats (e.g., terrorists, criminals) have been implemented at most facilities that handle special nuclear material, classified information, or other assets critical to national security. Attention is not focussing on insider protection, and safeguards managers are attempting to provide balanced protection against insider and outsider threats. Potential insider threats include attempts by facility employees to steal special nuclear material (SNM), to cause a radiological hazard to the public, to sabotage critical facilities, or to steal property or classified information. This paper presents a report card on the status of insider protection at Department of Energy and Nuclear Regulatory Commission-licensed facilities, with emphasis on SNM theft. We discuss the general trends in insider protection and the limitations of protection measures currently in use. We also discuss the most critical needs for improved procedures, technology, analytical tools, and education for safeguards personnel.
Date:
January 1, 1986
Creator:
Al-Ayat, R. A. & Judd, B. R.
Object Type:
Article
System:
The UNT Digital Library
Safeguards Evaluation Method for Evaluating Vulnerability to Insider Threats
As protection of DOE facilities against outsiders increases to acceptable levels, attention is shifting toward achieving comparable protection against insiders. Since threats and protection measures for insiders are substantially different from those for outsiders, new perspectives and approaches are needed. One such approach is the Safeguards Evaluation Method. This method helps in assessing safeguards vulnerabilities to theft or diversion of special nuclear meterial (SNM) by insiders. The Safeguards Evaluation Method-Insider Threat is a simple model that can be used by safeguards and security planners to evaluate safeguards and proposed upgrades at their own facilities. The method is used to evaluate the effectiveness of safeguards in both timely detection (in time to prevent theft) and late detection (after-the-fact). The method considers the various types of potential insider adversaries working alone or in collusion with other insiders. The approach can be used for a wide variety of facilities with various quantities and forms of SNM. An Evaluation Workbook provides documentation of the baseline assessment; this simplifies subsequent on-site appraisals. Quantitative evaluation is facilitated by an accompanying computer program. The method significantly increases an evaluation team's on-site analytical capabilities, thereby producing a more thorough and accurate safeguards evaluation.
Date:
January 1, 1986
Creator:
Al-Ayat, R. A.; Judd, B. R. & Renis, T. A.
Object Type:
Article
System:
The UNT Digital Library
Saudi Arabia and United States Multinationals: A Partnership in Economic Development
This study has been primarily concerned with the pattern of economic development and the role of the multinational corporations (MNC's) in that process in the Kingdom of Saudi Arabia. Two contrasting theoretical frameworks were adopted to assess the pattern of economic development followed in the Kingdom of Saudi Arabia from 1970 through 1983. The first theoretical perspective is the neoclassical approach to economic development which postulates that the productive resources at the disposal of a country and the institutions developed to guide the prudent use of them are paramount to a balanced development. On the other hand, Hymer's contrasting perspective is based on the Law of Uneven Development. Essentially, Hymer claimed that inequality is built into the growth mechanisms of the present day world capitalist economic system that shapes the international economy through the agency of the multinational corporations. Therefore, any involvement by the MNC's is necessarily hierarchical, and characterized by dominance and dependence as well as wealth and poverty, particularly between the industrial countries of Western Europe and North America and the less developed countries in the Third World societies. Ironically, the Saudi Arabian case shows that Hymer's Law of Uneven Development is questionable. First, instead of the location …
Date:
August 1986
Creator:
Al-Babtein, Ahmed
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Measurement of the fission cross section of /sup 238/Pu
The fission cross sections of /sup 238/Pu have been measured from 0.1 eV to 80 keV energy range using the Rensselaer Intense Neutron Spectrometer. The cross sections were normalized to the /sup 235/U ENDF/B-V data broadened to the resolution of the Rensselaer Intense Neutron Spectrometer system. The fission areas and widths were determined for the resolved low-energy resonances. The ENDF/B-V fission cross sections for the /sup 238/Pu isotope are, in general, not in good agreement with the measured cross sections and a new evaluation is recommended. The observations of structure in the unresolved fission cross sections is suggestive of the existence of intermediate structure. 18 refs., 1 fig., 1 tab.
Date:
July 1, 1986
Creator:
Alam, B.; Block, R. C.; Slovacek, R. E. & Hoff, R. W.
Object Type:
Article
System:
The UNT Digital Library
AACOG Region, Volume 13, Number 9, September 1986
Monthly newsletter of the Alamo Area Council of Governments describing news and events of relevance to the agencies.
Date:
September 1986
Creator:
Alamo Area Council of Governments
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
AACOG Region, Volume 13, Number [10], October 1986
Monthly newsletter of the Alamo Area Council of Governments describing news and events of relevance to the agencies.
Date:
October 1986
Creator:
Alamo Area Council of Governments
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
AACOG Region, Volume 13, Number 12, December 1986
Monthly newsletter of the Alamo Area Council of Governments describing news and events of relevance to the agencies.
Date:
December 1986
Creator:
Alamo Area Council of Governments
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
[A Soldier's Play]
Program for A Soldier's Play, a production by the Alamo City Theatre and Charles Fuller. The play was performed on March 14th, 1986.
Date:
March 14, 1986
Creator:
Alamo City Theatre.
Object Type:
Pamphlet
System:
The Portal to Texas History
A bounce-averaged Monte Carlo collision operator and ripple transport in a tokamak
A bounce-averaged Monte Carlo operator is presented that simulates bounce-averaged perturbative Lorentz pitch angle scattering of particles in toroidal plasmas, in particular a tokamak. In conjunction with bounce-averaged expressions for the deterministic motion, this operator allows a quick and inexpensive simulation on time scales long compared to a bounce time. An analytically tractable model of transport due to toroidal magnetic field ripple is described.
Date:
September 1, 1986
Creator:
Albert, Jay M. & Boozer, Allen H.
Object Type:
Report
System:
The UNT Digital Library
Trends in Texas Homebuying: 1982-85
Technical report analyzing the trends and recent habits of home buyers in Texas from 1982-85.
Date:
September 1986
Creator:
Albrecht, Don E.
Object Type:
Report
System:
The Portal to Texas History
Effect of chain rigidity on conductivity of conjugated polymers
There are several ways to introduce processability to conjugated polymers, and one of them is discussed here. The basic approach involves the introduction of flexible centers in a conjugated backbone with a periodicity that allows the existence of conjugated sequences characterized by an electron mobility high enough to result in electronic conduction upon oxidation or reduction. The process consists of the use of AsF/sub 5/ as a polymerization catalyst, and AsF/sub 3/ as a non-conventional medium for the reaction. The Lewis acid coupling reactions, via which the polymerization occurs, result in soluble materials. Characteristics of the materials obtained by polymerizing acetylene and some aromatic compounds are discussed.
Date:
January 1, 1986
Creator:
Aldissi, M.
Object Type:
Article
System:
The UNT Digital Library
Physical characteristics of diblock polyacetylene copolymers: processability-conductivity correlation
The physical properties of polyacetylene diblock copolymers containing polystyrene (PS) or polyisoprene (PI) blocks of various compositions are studied using electron spin resonance, resonance Raman scattering, and room temperature conductivity measurements. This study is performed to investigate the processability-conductivity correlation in these materials and their viability as conducting systems.
Date:
January 1, 1986
Creator:
Aldissi, M.; Hou, M. & Farrell, J.
Object Type:
Article
System:
The UNT Digital Library
Expert assistants for design
Two expert programs currently under development at the Los Alamos National Laboratory, PROCON and the Designer's Apprentice, are briefly described. Both codes define interface to simulations that provide a wide variety of information about the performance of complex devices. (BCS)
Date:
January 1, 1986
Creator:
Aldridge, J.; Cerutti, J.; Draisin, W. & Steuerwalt, M.
Object Type:
Article
System:
The UNT Digital Library
A circular aperture magnetron for injection into an RFQ
A magnetron with a circular anode aperture and a spherical dimple in the cathode has been operated. With this configuration, a normalized emittance (90%) of 0.1..pi..cm-mrad has been measured in both planes for an H/sup -/ current of >50 mA. Other than this symmetric emittance, the source performance is the same as with the typical anode slit and grooved cathode.
Date:
January 1, 1986
Creator:
Alessi, J.G.
Object Type:
Article
System:
The UNT Digital Library
Ring magnetron ionizer
A ring magnetron D/sup -/ charge exchange ionizer has been built and tested. An H/sup -/ current of 500 ..mu..A was extracted with an estimated H/sup 0/ density in the ionizer of 10/sup 12/ cm/sup -3/. This exceeds the performance of ionizers presently in use on polarized H/sup -/ sources. The ionizer will soon be tested with a polarized atomic beam.
Date:
January 1, 1986
Creator:
Alessi, J.G.
Object Type:
Article
System:
The UNT Digital Library
Polarized H/sup -/ source development at BNL
The AGS polarized H/sup -/ source (PONI-1) now produces currents of 25-40 ..mu..A, and has operated reliably during polarized physics runs. A new polarized source, having as its goal mA's of H-vector, is now under development. An atomic hydrogen beam has been cooled to about 20 K with a forward flux of approx.10/sup 19/ atoms/s/sr. A superconducting solenoid having a calculated acceptance angle of 0.1 sr for the cold H/sup 0/ beam, is now being built. An ionizer for the resulting polarized H/sup 0/ beam based on resonant charge exchange of H/sup 0/ with D/sup -/, is being tested. 500 ..mu..A of H/sup -/ have been produced by ionizing an unpolarized H/sup 0/ beam using this ionizer.
Date:
January 1, 1986
Creator:
Alessi, J.G.; Hershcovitch, A.; Kponou, A.; Niinikoski, T. & Sluyters, T.
Object Type:
Article
System:
The UNT Digital Library
Polarized H/sup -/ sources for the AGS - present and future
The AGS polarized H/sup -/ source presently produces 30 to 40 ..mu..A of vector H/sup -/ in 500 ..mu..s pulses, with a polarization of 70-75%. The source operates reliably and has been used for polarized physics runs the past two years. There is now a development program in progress which has as its goal an operational vector H/sup -/ source producing milliamperes of current for the AGS.
Date:
January 1, 1986
Creator:
Alessi, J.G.; Kponou, A. & Sluyters, T.
Object Type:
Article
System:
The UNT Digital Library
Prototype results of a high resolution vertex drift chamber for the Mark II SLC Upgrade detector
Test results from a full-length prototype of the drift chamber vertex detector for the Mark II SLC Upgrade detector are presented. The 22 cell jet chamber employs planes of grid wires above and below the sense wire plane to increase the electrostatic stability of the sense wires and to narrow the electron arrival time distribution. Two different grid designs have been investigated. The spatial resolution and pulse widths have been measured at a variety of operating points and for different timing schemes in a mixture of 92% CO/sub 2/ and 8% isobutane. Typical results at 3 atmospheres pressure give an average resolution over a 2 cm drift distance of 30 ..mu..m for both designs. Efficient double track detection is achieved for tracks separated by 500 ..mu..m for one design and by 1000 ..mu..m for the other.
Date:
February 1, 1986
Creator:
Alexander, J.; Hayes, K.; Hoard, C.; Hutchinson, D.; Jaros, J.; Odaka, S. et al.
Object Type:
Article
System:
The UNT Digital Library
Papers Presented at the Second International Fusion Reactor Materials Conference
Separate abstracts have been prepared for each of the three included papers. (MOW)
Date:
January 1, 1986
Creator:
Alhajji, Jamal N.; Chou, Philip S.; Ghoniem, Nasr M. & Martin, Rodger.
Object Type:
Article
System:
The UNT Digital Library
Infrared absorption and emission characteristics of interstellar PAHs (Polycyclic Aromatic Hydrocarbon)
The mid-infrared interstellar emission spectrum with features at 3050, 1610, 1300, 1150, and 885 cm/sup -1/ (3.28, 6.2, 7.7, 8.7 and 11.3 microns) is discussed in terms of the Polycyclic Aromatic Hydrocarbon (PAH) hypothesis. This hypothesis is based on the suggestive, but inconclusive comparison between the interstellar emission spectrum with the infrared absorption and Raman spectra of a few PAHs. The fundamental vibrations of PAHs and PAH-like species which determine the ir and Raman properties are discussed. Interstellar ir band emission is due to relaxation from highly vibrationally excited PAHs which have been excited by ultraviolet photons. The excitation/emission process is described in general and the ir fluorescence from one PAH, chrysene, is traced in detail. Generally, there is sufficient energy to populate several vibrational levels in each mode. Molecular vibrational potentials are anharmonic and emission from these higher levels will fall at lower frequencies and produce weak features to the red of the stronger fundamentals. This process is also described and can account for some spectroscopic details of the interstellar emission spectra previously unexplained. Analysis of the interstellar spectrum shows that PAHs containing between 20 and 30 carbon atoms are responsible for the emission. 43 refs., 11 figs.
Date:
January 1, 1986
Creator:
Allamandola, L. J.; Tielens, A. G. G. M. & Barker, J. R.
Object Type:
Article
System:
The UNT Digital Library