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Altus Times (Altus, Okla.), Vol. 100, No. 179, Ed. 1 Sunday, October 17, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 17, 1999
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Alvin Sun-Advertiser (Alvin, Tex.), Vol. 108, No. 121, Ed. 1 Sunday, October 17, 1999
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
October 17, 1999
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 301, Ed. 1 Sunday, October 17, 1999
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
October 17, 1999
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
Comparative Studies of the Electrochemical and Thermal Stability of Composite Electrolytes for Lithium Battery Using Two Types of Boron-Based Anion Receptors
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 windows of TPFB based electrolytes in ethylene carbonate (EC)-propylene carbonate (PC)-dmethyl carbonate (DMC) (1:1:3, v/v) are up to 5, 4.76 and 4.96 V for LiF, CF{sub 3}CO{sub 2}Li and C{sub 2}F{sub 5}CO{sub 2}Li respectively. TPFBO has lower electrochemical stability compared to TPFB. The thermal stability of pure TFPB is better than TFPBO. The lithium salt complexes have higher thermal stability than these two compounds. TPFB based electrolytes showed high cycling efficiencies and good cycleability when they were tested in Li/LiMn{sub 2}O{sub 4} cells. The capacity retention of the cells using TFPB based electrolytes during multiple cycling is better than those using TFPBO based electrolytes.
Date:
October 17, 1999
Creator:
Yang, X. Q.; Lee, H. S.; Sun, X. & McBreen, J.
Object Type:
Article
System:
The UNT Digital Library
Dissolution of Oxide Films on Aluminum in Near Neutral Solutions
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 phosphate behavior. Results in sulfate and nitrate solutions were more complex. The behavior in the sulfate solution was attributed to effects of sulfate the oxide/solution interface.
Date:
October 17, 1999
Creator:
Isaacs, Hugh S.; Xu, Feng & Jeffcoate, Carrol S.
Object Type:
Article
System:
The UNT Digital Library
Downhole Seismic Monitoring at the Geysers
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 early-1999 to help constrain locations of shallow seismicity. Locations occurring within about 1 km ({approximately}3000 ft) of the array have been determined for a subset of high-frequency events detected on the downhole and surface stations for the 10-week period January 6 to March 16, 1999. These events are distinct from surface-monitored seismicity at The Geysers in that they occur predominantly above the producing reservoir, at depths ranging from about 1200 to 4000 ft depth (1450 to -1350 ft elevation). The shallow seismicity shows a northeast striking trend, similar to seismicity trends mapped deeper within the reservoir and the strike of the predominant surface lineament observed over the productive field.
Date:
October 17, 1999
Creator:
Rutledge, J. T.; Anderson, T. D.; Fairbanks, T. D. & Albright, J. N.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Sunday, October 17, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 17, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Ionic Current Mapping Techniques and Applications to Aluminum-Copper Corrosion
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.
Object Type:
Article
System:
The UNT Digital Library
Levelland and Hockley County News-Press (Levelland, Tex.), Vol. 21, No. 57, Ed. 1 Sunday, October 17, 1999
Semiweekly newspaper from Levelland, Texas that includes local, state, and national news along with advertising.
Date:
October 17, 1999
Creator:
Rigg, John
Object Type:
Newspaper
System:
The Portal to Texas History
Mechanisms of silica refractory corrosion in glass-melting furnaces: Equilibrium predictions
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 using the associate species model are included in the calculations. The calculations indicate that gas-phase NaOH concentrations less than {approximately}15 ppm will not react with the silica refractory under either air-fired or oxy-fired conditions, since this is the smallest equilibrium NaOH partial pressure in a system containing crystalline SiO{sub 2} (either cristobalite or tridymite) in equilibrium with a variable-composition sodium-silicate liquid phase at refractory temperatures in the range 1,400--1,700 C. The high water content ({approximately}65%) of oxygen-fired furnaces results in measured NaOH(g) concentrations as high as 300 ppm, which greatly exceeds the 1,600 C maximum of 68 ppm NaOH(g) for oxy-fired equilibrium with a liquid-SiO{sub 2} (crystalline) system. This indicates that there is a thermodynamic driving force for NaOH(g) to react with silica refractories in oxy-fired furnaces. The …
Date:
October 17, 1999
Creator:
Mark D. Allendorf, SNL /CA & Karl E. Spear, Penn State University
Object Type:
Article
System:
The UNT Digital Library
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
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 was observed in addition to the two expected hexagonal phases H1 and H2. In the region very close to x = 0.5, some spectral signatures for the formation of a monoclinic phase M1 were also observed. Further, in the x = 0.8 to x = 1 region, the formation of a CdI{sub 2} type hexagonal phase has been confirmed. However, this new phase is transformed from a CdCl{sub 2} type hexagonal phase, rather than from a monoclinic phase M2 as previously reported in the literature. For the Li{sub 1-x}NiO{sub 2} system, by taking the advantage of the high resolution in 2{theta} angles through the synchrotron based XRD technique, they were able to identify a …
Date:
October 17, 1999
Creator:
Yang, X. Q.; Sun, X. & McBreen, J.
Object Type:
Article
System:
The UNT Digital Library
[News Clip: Earthquake]
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.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Restaurant Delivery]
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.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
ORIGEN-ARP, A Fast and Easy-to-Use Source Term Generation Tool
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 been validated against pressurized water reactor (PWR) and boiling water reactor (BWR) spent fuel chemical assay data.
Date:
October 17, 1999
Creator:
Bowman, S.M.; Hermann, O.W.; Leal, L.C. & Parks, C.V.
Object Type:
Article
System:
The UNT Digital Library
The Panola Watchman (Carthage, Tex.), Vol. 126, No. 83, Ed. 1 Sunday, October 17, 1999
Semiweekly newspaper from Carthage, Texas that includes local, state, and national news along with advertising.
Date:
October 17, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 117, No. 82, Ed. 1 Sunday, October 17, 1999
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
October 17, 1999
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Revisions to the Unregulated Containment Monitoring Regulation for Public Water Systems
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.
Object Type:
Legal Document
System:
The UNT Digital Library
The Seminole Sentinel (Seminole, Tex.), Vol. 92, No. 104, Ed. 1 Sunday, October 17, 1999
Semiweekly newspaper from Seminole, Texas that includes local, state, and national news along with advertising.
Date:
October 17, 1999
Creator:
Dow, M. Gene & Fisher, David
Object Type:
Newspaper
System:
The Portal to Texas History
Shielding Experimental Benchmark Storage, Retrieval, and Display System
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 destroyed as a result of facility closures, retirement of experimental personnel, and ignorance. A standard set of experiments, used globally, establishes a framework to validate and verify models in computer codes and guarantee comparative analyses between different computational systems. SINBAD is a database that was conceived in 1992 to store, retrieve, and display the measurements from international experiments for the past 50 years in nuclear shielding. Based at Oak Ridge National Laboratory's Radiation Safety Information and Computational Center (RSICC) SINBAD has a collection of integral benchmark experiments from around the world. SINBAD is shared with the Office of Economic and Cooperative Development/Nuclear Energy Agency Data Bank, which provides contributions from Europe, Russia, and Japan.
Date:
October 17, 1999
Creator:
Hunter, H.; Kodeli, I.; Marshall, W. J.; Parson, J. & Sartor, E.
Object Type:
Article
System:
The UNT Digital Library
Studies on Relationship Between Structure of Over-Charge State and Thermal Stability for LiNiO(sub 2) Based Cathode Materials
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 stability of these materials are related to their structural changes during charge, especially to the formation of a hexagonal phase H3 with collapsed lattice along ''c'' axis. A hypothesis is proposed that through suppressing the formation of H3 phase when charged above 4.3 V, the thermal stability of the cathode materials can be improved.
Date:
October 17, 1999
Creator:
Sun, X.; Yang, X. Q.; McBreen, J.; Gao, Y.; Yakovleva, M. V.; Xing, X. K. et al.
Object Type:
Article
System:
The UNT Digital Library
Thermal Stability and Aging Characteristics of Chromate Conversion Coatings on Aluminum Alloy 2024-T3
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 is to be considered.
Date:
October 17, 1999
Creator:
Laget, V.; Jeffcoate, C.; Isaacs, H. S. & Buchheit, R. G.
Object Type:
Article
System:
The UNT Digital Library
[Wheeler Avenue Baptist Church Bulletin: October 17, 1999]
Church bulletin listing the order of worship for the 7:30 and 11:00 Sunday morning services at the Wheeler Avenue Baptist Church, as well as various notes about upcoming events, congregational news, and other information of relevance to church members.
Date:
October 17, 1999
Creator:
Wheeler Avenue Baptist Church (Houston, Tex.)
Object Type:
Pamphlet
System:
The Portal to Texas History
The Bastrop Advertiser (Bastrop, Tex.), Vol. 145, No. 66, Ed. 1 Saturday, October 17, 1998
Semi-weekly newspaper from Bastrop, Texas that includes local, state, and national news along with advertising.
Date:
October 17, 1998
Creator:
McAuley, Davis
Object Type:
Newspaper
System:
The Portal to Texas History
The Daily Chickasha Star (Chickasha, Okla.), Vol. [97], No. 175, Ed. 1 Saturday, October 17, 1998
Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 17, 1998
Creator:
Settle, David
Object Type:
Newspaper
System:
The Gateway to Oklahoma History