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Consolidation and shear failure leading to subsidence and settlement. Final report
Subsidence and settlement are phenomena that are much more destructive than generally thought. In shallow land burials they may lead to cracking of the overburden and eventual exposure and escape of waste material. The primary causes are consolidation and cave-ins. Laboratory studies performed at Los Alamos permit us to predict settlement caused by consolidation or natural compaction of the crushed tuff overburden. We have also investigated the shear failure characteristics of crushed tuff that may lead to subsidence. Examples of expected settlement and subsidence are calculated based on the known geotechnical characteristics of crushed tuff. The same thing is done for bentonite/tuff mixes because some field experiments were performed using this additive (bentonite) to reduce the hydraulic conductivity of the crushed tuff. Remedial actions, i.e., means to limit the amount of settlement, are discussed. We finally discuss our field experiment, which studies the influence of subsidence on layered systems in general and on biobarriers in particular. The share of the produced cavities is compared with cavities produced by idealized voids in an idealized environment. Study of root penetration at subsidence sites gives us an indication of the remaining degree of integrity. 30 refs., 24 figs., 19 tabs.
Date:
February 1, 1986
Creator:
Abeele, W.; Nyhan, J. W.; Hakonson, T. E.; Drennon, B. J.; Lopez, E. A.; Herrera, W. J. et al.
Object Type:
Report
System:
The UNT Digital Library
Low-level integrated system test
An unusually wet season permitted us to test the integrity of our biobarrier installed in the improved or modified plots in our integrated system. Although the modified plots had a reduced water-holding capacity, they delivered leachate only at the drain installed above the biobarrier, demonstrating once more that the biobarrier is behaving successfully as a capillary barrier in rerouting the subsurface flow around the tuff beneath the biobarrier. As a result of vertical water flow impedance, more water was made available to plot vegetation, enhancing its growth dramatically. The capillary barrier theory was backed up by the tensiometer results showing saturation at the upper biobarrier interface. 11 refs., 19 figs
Date:
February 1, 1986
Creator:
Abeele, Willy; Nyhan, John; Hakonson, Tom; Drennon, Barry J.; Lopez, Edward A.; Herrera, Wilfred J. et al.
Object Type:
Report
System:
The UNT Digital Library
Abilene Philharmonic Playbill: February 1-March 1, 1986
Program for an Abilene Philharmonic concert that ran from February 1st to March 1st (fifth and sixth concert) during the 36th season. It includes information about the pieces performed, artists and musicians, and advertising from local companies.
Date:
February 1986
Creator:
Abilene Philharmonic
Object Type:
Pamphlet
System:
The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 80, No. 1, Ed. 1 Thursday, February 27, 1986
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
February 27, 1986
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
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
Southwest Retort, Volume 39, Number 2, February 1986
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
February 1986
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Some Results for the Chromatic Correction of the Antisymmetric RHIC Lattice
None
Date:
February 24, 1986
Creator:
Antillon, Armando
Object Type:
Report
System:
The UNT Digital Library
Electron spectroscopy studies in heavy fermions
Photoemission experiments (whereby an electron absorbs a packet of light energy and is able to escape from the host material due to its increased energy) can measure directly the energy distribution of electrons in various materials. Our measurements on a recently-discovered class of metallic materials called ''heavy fermions'' show that the electrons that actually carry the electric current in these metals exist only within an extremely narrow range of energies. This range, which we will call the bandwidth, is narrower than that found in ordinary metals like copper by at least a factor of 10. Indeed it is surprising that they can carry electric current at all since such narrow energy ranges (or band widths) are characteristic of electrons confined to their host atoms, as in a non-metal, rather than of electrons that are free to wander through a metal. 8 refs.
Date:
February 1, 1986
Creator:
Arko, A. J.
Object Type:
Article
System:
The UNT Digital Library
Role of the DAPIA in the manufactured housing process
This paper describes the function of Design Approval Primary Inspection Agencies (DAPIAs) and provides some insights into the design approval process for manufacturing housing units. DAPIAs play a key role in assuring that the designs for manufactured housing units are in compliance with HUD's Manufactured Housing Constructing and Safety Standards. There are five DAPIAs performing plan checks and design reviews for the manufacturing operating in the Pacific Northwest region. The costs to a manufacturer for DAPIA services ranges from $100 to $250 to approve modifications to existing designs and $700 to $1200 to approve a totally new design. Each DAPIA indicated that they would be willing to work with BPA in some way to assist manufacturers produce units which can achieve MCS levels. They would be available for energy design consultation on an informal basis. In addition they would be willing to consider formal certifications of MCS designs if BPA develops evaluation criteria which they can apply.
Date:
February 1, 1986
Creator:
Balistocky, S.; Lee, A. D. & Onisko, S. A.
Object Type:
Report
System:
The UNT Digital Library
High-temperature gas-cooled reactor safety studies for the Division of Accident Evaluation. Quarterly progress report, April 1-June 30, 1985
Modeling, code development, and analyses of the modular High-Temperature Gas-Cooled Reactor (HTGR) continued with work on the side-by-side design. Fission-product release and transport experiments were completed. Sections of an HTGR safety handbook were written.
Date:
February 1, 1986
Creator:
Ball, S. J.; Cleveland, J. C.; Harrington, R. M. & Wilson, J. H.
Object Type:
Report
System:
The UNT Digital Library
The 1985 Geothermal Gradient Drilling Project for the State of Washington
This report describes seven geothermal gradient test holes in the southern Washington Cascade Mountains. The objectives of the drilling program were to: (1) more accurately define the general extent of potential geothermal resources in the southern Washington Cascades, and (2) evaluate specific targets that are geologically and structurally favorable for the occurrence of geothermal resources. (ACR)
Date:
February 1986
Creator:
Barnett, Brent
Object Type:
Report
System:
The UNT Digital Library
Reaction of glass during gamma irradiation in a saturated tuff environment. Part 1. SRL 165 glass
The influence of gamma irradiation on the reaction of actinide-doped borosilicate glass (SRL 165) in a saturated tuff environment has been studied in a series of tests lasting up to 56 days. The following conclusions were reached. The reaction of, and subsequent actinide release from, the glass depends on the dynamic interaction between radiolysis effects, which cause the solution pH to become more acidic; glass reaction, which drives the pH more basic; and test component interactions that may extract glass components from solution. The use of large gamma irradiation dose rates to accelerate reactions that may occur in an actual repository radiation field may affect this dynamic balance by unduly influencing the mechanism of the glass-water reaction. Comparisons between the present results and data obtained by reacting similar glasses using MCC-1 and NNWSI rock cup procedures indicate that the irradiation conditions used in the present experiments do not dramatically influence the reaction rate of the glass. 8 figs., 9 tabs.
Date:
February 1, 1986
Creator:
Bates, J. K.; Fischer, D. F. & Gerding, T. J.
Object Type:
Report
System:
The UNT Digital Library
The Reaction of Glass During Gamma Irradiation in a Saturated Tuff Environment: Part 1, SRL 165 Glass
The influence of gamma irradiation on the reaction of actinide-doped borosilicate glass (SRL 165) in a saturated tuff environment has been studied in a series of tests lasting up to 56 days. The following conclusions were reached. The reaction of, and subsequent actinide release from, the glass depends on the dynamic interaction between radiolysis effects, which cause the solution pH to become more acidic; glass reaction, which drives the pH more basic; and test component interactions that may extract glass components from solution. The use of large gamma irradiation dose rates to accelerate reactions that may occur in an actual repository radiation field may affect this dynamic balance by unduly influencing the mechanism of the glass-water reaction. Comparisons between the present results and data obtained by reacting similar glasses using MCC-1 and NNWSI rock cup procedures indicate that the irradiation conditions used in the present experiments do not dramatically influence the reaction rate of the glass.
Date:
February 1986
Creator:
Bates, John K.; Fischer, Donald F. & Gerding, Thomas J.
Object Type:
Report
System:
The UNT Digital Library
Neutron capture cross sections for /sup 86,87/Sr at Stellar temperatures
Cross sections have been measured from 100 eV to 1 MeV by the neutron-time-of-flight technique. The capture events were recorded by detecting the prompt gamma-ray cascade with two C/sub 6/D/sub 6/ scintillators, and were normalized to standard gold cross sections. The background was determined experimentally by utilizing the ''black resonance'' technique. A /sup 6/Li-glass scintillator was used to monitor the neutron flux. A Maxwellian-averaged capture cross section at kT = 30 keV of 74 +- 3 mb for /sup 86/Sr, and 102 +- 4 mb for /sup 87/Sr. (LEW)
Date:
February 1, 1986
Creator:
Bauer, R. W.; Mathews, G. J.; Becker, J. A. & Howe, R. E.
Object Type:
Article
System:
The UNT Digital Library
NMR studies of selective population inversion and spin clustering
This work describes the development and application of selective excitation techniques in Nuclear Magnetic Resonance. Composite pulses and multiple-quantum methods are used to accomplish various goals, such as broadband and narrowband excitation in liquids, and collective excitation of groups of spins in solids. These methods are applied to a variety of problems, including non-invasive spatial localization, spin cluster size characterization in disordered solids and solid state NMR imaging.
Date:
February 1, 1986
Creator:
Baum, J.S.
Object Type:
Report
System:
The UNT Digital Library
Safety analysis -- 200 Area Savannah River Plant, F-Canyon Operations. Supplement 4
The F-Canyon facility is located in the 200 Separations Area and uses the Purex process to recover plutonium from reactor-irradiated uranium. The irradiated uranium is normally in the form of solid or hollow cylinders called slugs. These slugs are encased in aluminum cladding and are sent to the F-Canyon from the Savannah River Plant (SRP) reactor areas or from the Receiving Basin for Offsite Fuels (RBOF). This Safety Analysis Report (SAR) documents an analysis of the F-Canyon operations and is an update to a section of a previous SAR. The previous SAR documented an analysis of the entire 200 Separations Area operations. This SAR documents an analysis of the F-Canyon and is one of a series of documents for the Separations Area as specified in the Savannah River Implementation Plans. A substantial amount of the information supporting the conclusions of this SAR is found in the Systems Analysis. Some F-Canyon equipment has been updated during the time between the Systems Analysis and this SAR and a complete description of this equipment is included in this report. The primary purpose of the analysis was to demonstrate that the F-Canyon can be operated without undue risk to onsite or offsite populations and …
Date:
February 1, 1986
Creator:
Beary, M. M.; Collier, C. D.; Fairobent, L. A.; Graham, R. F.; Mason, C. L.; McDuffee, W. T. et al.
Object Type:
Report
System:
The UNT Digital Library
The Paducah Post (Paducah, Tex.), Vol. 79, No. 51, Ed. 1 Thursday, February 13, 1986
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
February 13, 1986
Creator:
Beck, Keitha
Object Type:
Newspaper
System:
The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 79, No. 52, Ed. 1 Thursday, February 20, 1986
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
February 20, 1986
Creator:
Beck, Keitha
Object Type:
Newspaper
System:
The Portal to Texas History
Rains County Leader (Emory, Tex.), Vol. 98, No. 35, Ed. 1 Thursday, February 6, 1986
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
February 6, 1986
Creator:
Becknell, Kathleen Hill
Object Type:
Newspaper
System:
The Portal to Texas History
Rains County Leader (Emory, Tex.), Vol. 98, No. 36, Ed. 1 Thursday, February 13, 1986
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
February 13, 1986
Creator:
Becknell, Kathleen Hill
Object Type:
Newspaper
System:
The Portal to Texas History
Rains County Leader (Emory, Tex.), Vol. 98, No. 37, Ed. 1 Thursday, February 20, 1986
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
February 20, 1986
Creator:
Becknell, Kathleen Hill
Object Type:
Newspaper
System:
The Portal to Texas History
Rains County Leader (Emory, Tex.), Vol. 98, No. 38, Ed. 1 Thursday, February 27, 1986
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
February 27, 1986
Creator:
Becknell, Kathleen Hill
Object Type:
Newspaper
System:
The Portal to Texas History
Chemical Profiles of Microalgae with Emphasis on Lipids: Final Report
This final report details progress during the third year of this subcontract. The overall objective of this subcontract was two fold: to provide the analytical capability required for selecting microalgae strains with high energy contents and to develop fundamental knowledge required for optimizing the energy yield from microalgae cultures. The progress made towards these objectives during this year is detailed in this report.
Date:
February 1, 1986
Creator:
Benemann, J. R.; Tillett, D. M.; Suen, Y.; Hubbard, J. & Tornabene, T. G.
Object Type:
Report
System:
The UNT Digital Library
Deep inelastic lepton scattering from nucleons and nuclei
A pedagogical review is presented of results obtained from inclusive deep inelastic scattering of leptons from nucleons and nuclei, with particular emphasis on open questions to be explored in future experiments.
Date:
February 1, 1986
Creator:
Berger, E. L.
Object Type:
Article
System:
The UNT Digital Library