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Revisions to the Unregulated Containment Monitoring Regulation for Public Water Systems

Description: 64 FR 50556. Final rule establishing criteria for a program to monitor unregulated contaminants and to publish a list of contaminants to be monitored under the Safe Drinking Water Act (SWDA), as amended in 1996.
Date: October 17, 1999
Creator: United States. Environmental Protection Agency.
Item Type: Refine your search to only Legal Document
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Earthquake]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering an unknown news story. The footage features a crew working at a site near a moving train at night. This footage was broadcast at 5pm.
Date: October 17, 1999, 5:00 p.m.
Duration: 42 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Restaurant Delivery]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: October 17, 1999, 5:00 p.m.
Duration: 2 minutes 10 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

ORIGEN-ARP, A Fast and Easy-to-Use Source Term Generation Tool

Description: ORIGEN-ARP is a new SCALE analytical sequence for spent fuel characterization and source term generation that serves as a faster alternative to the SAS2H sequence by using the Automatic Rapid Processing (ARP) methodology for generating problem-dependent ORIGEN-S cross-section libraries. ORIGEN-ARP provides an easy-to-use menu-driven input processor. This new sequence is two orders of magnitude faster than SAS2H while conserving the rigor and accuracy of the SAS2H methodology. ORIGEN-ARP has bee… more
Date: October 17, 1999
Creator: Bowman, S.M.; Hermann, O.W.; Leal, L.C. & Parks, C.V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Shielding Experimental Benchmark Storage, Retrieval, and Display System

Description: The complete description of an integral shielding benchmark experiment includes the radiation source, materials, physical geometry, and measurement data. This information is not usually contained in a single document, but must be gathered from several sources, including personal contact with the experimentalists. A comprehensive database of the experimental details is extremely useful and cost-effective in present day computations. Further, experimental data are vulnerable to being lost or dest… more
Date: October 17, 1999
Creator: Hunter, H.; Kodeli, I.; Marshall, W. J.; Parson, J. & Sartor, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Downhole Seismic Monitoring at the Geysers

Description: A 500-ft length, 6-level, 3-component, vertical geophone array was permanently deployed within the upper 800 ft of Unocal's well GDCF 63-29 during a plug and abandonment operation on April 7, 1998. The downhole array remains operational after a period of 1 year, at a temperature of about 150 C. Continuous monitoring and analysis of shallow seismicity (<4000 ft deep) has been conducted over that same 1-year period. The downhole array was supplemented with 4 surface stations in late-1998 and e… more
Date: October 17, 1999
Creator: Rutledge, J. T.; Anderson, T. D.; Fairbanks, T. D. & Albright, J. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Comparative Studies of the Electrochemical and Thermal Stability of Composite Electrolytes for Lithium Battery Using Two Types of Boron-Based Anion Receptors

Description: Comparative studies were done on two new types of boron based anion receptors, tris(pentafluorophenyl) borane (TFPB) and tris(pentafluorophenyl) borate (TFPBO), regarding conductivity enhancement electrochemical and thermal stability when used as additives in composite electrolytes for lithium batteries. Both additives enhance the ionic conductivity of electrolytes of simple lithium salts, LiF, CF{sub 3}CO{sub 2}Li and C{sub 2}F{sub 5}CO{sub 2}Li in several organic solvents. The electrochemical… more
Date: October 17, 1999
Creator: Yang, X. Q.; Lee, H. S.; Sun, X. & McBreen, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mechanisms of silica refractory corrosion in glass-melting furnaces: Equilibrium predictions

Description: Corrosion of refractory silica brick used to line the roof or crown of many-glass-melting furnaces is a serious problem in furnaces using oxygen-fuel rather than air-fuel. In this work, the authors report equilibrium calculations for the Na{sub 2}O-SiO{sub 2} system that predict the formation of a variable-composition liquid-solution phase as a function of key furnace variables. Since thermodynamic data for the relevant liquid phases are unavailable in standard compilations, new data generated … more
Date: October 17, 1999
Creator: Mark D. Allendorf, SNL /CA & Karl E. Spear, Penn State University
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

New Findings on the Phase Transitions in Li(sub 1-x)CoO(sub 2) and Li(sub 1-x)NiO(sub 2) Cathode Materials During Cycling: In Situ Synchrotron X-Ray Diffraction Studies

Description: The authors have utilized synchrotron x-ray radiation to perform ''in situ'' x-ray diffraction studies on Li{sub 1-x}CoO{sub 2} and Li{sub 1-x}NiO{sub 2} cathodes. A C/10 charging rate was used for a Li/Li{sub 1-x}CoO{sub 2} cell. For the Li/Li{sub 1-x}NiO{sub 2} cells, C/13 and C/84 rates were applied. The in situ XRD data were collected during the first charge from 3.5 to 5.2 V. For the Li{sub 1-x}CoO{sub 2} cathode, in the composition range of x = 0 to x = 0.5, a new intermediate phase H2a w… more
Date: October 17, 1999
Creator: Yang, X. Q.; Sun, X. & McBreen, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ionic Current Mapping Techniques and Applications to Aluminum-Copper Corrosion

Description: Measurements have been made of the aluminum/metal galvanic couple. A wide range of geometries were investigated varying the areas of anodic and cathodic surfaces and employing specially designed galvanic cells with crevices. In situ ionic current density mapping was used to monitor galvanic corrosion and currents flowing between separated metals was measured.
Date: October 17, 1999
Creator: Isaacs, H. S.; Jeffcoate, C. S.; Missert, N. A. & Barbour, J. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Dissolution of Oxide Films on Aluminum in Near Neutral Solutions

Description: Simple linear potentiodynamic cycling measurements have been made on abraded pure Al in borate, chromate, phosphate, sulfate and nitrate solutions. In borate and chromate solutions the currents continued to decrease with each subsequent cycle. In phosphate dissolution of the oxide takes place producing repetitive repeat curves. The current variations in borate and chromate were simulated using a high field conduction oxide growth model. Including oxide dissolution in the model simulated the pho… more
Date: October 17, 1999
Creator: Isaacs, Hugh S.; Xu, Feng & Jeffcoate, Carrol S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Studies on Relationship Between Structure of Over-Charge State and Thermal Stability for LiNiO(sub 2) Based Cathode Materials

Description: A synchrotrons x-ray source was used for In Situ x-ray diffraction studies on cathode materials during charge and discharge. Two new cathode materials, LiNi{sub 0.75}Mg{sub 0.125}Ti{sub 0.125}O{sub 2} and LiNi{sub 0.56}Co{sub 0.25}Mg{sub 0.05}Ti{sub 0.05}O{sub 2}, were studied in comparison with LiNiO{sub 2}, and LiCo{sub 0.2}Ni{sub 0.8}O{sub 2}. The relationship between the structural changes and thermal stability at over-charged state has been investigated. For the W time, The thermal stabili… more
Date: October 17, 1999
Creator: Sun, X.; Yang, X. Q.; McBreen, J.; Gao, Y.; Yakovleva, M. V.; Xing, X. K. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Thermal Stability and Aging Characteristics of Chromate Conversion Coatings on Aluminum Alloy 2024-T3

Description: XANES and electrochemical impedance spectroscopes were used in parallel to correlate the amount of Cr(VI) in chromate conversion coatings (CCC) on Al 2024 and their corrosion resistance in order to understand the degradation mechanisms upon aging or heating. Cr(VI) species appear to be immobilized for temperatures higher than 80 C due to dehydration. CCC are shown to be dynamic in the first month of aging with no significant dehydration. Another degradation mechanism involving chemical changes … more
Date: October 17, 1999
Creator: Laget, V.; Jeffcoate, C.; Isaacs, H. S. & Buchheit, R. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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