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5/10-MVA high temperature superconducting power transformer. Progress report for the period May 1998 - June 1999
None
Date:
July 28, 1999
Creator:
Intermagnetics General Corporation
Object Type:
Report
System:
The UNT Digital Library
241-SY-101 DACS instrument problem screen (SCR 448) acceptance test procedure
The operability of the 241-SY-101 Data Acquisition and Control System (DACS) to provide proper control and monitoring of the mitigation mixer pump and instrumentation installed in the 241-SY-101 underground storage tank utilizing the [INSTPROB] screen will be systematically evaluated by the performance of this procedure.
Date:
June 28, 1999
Creator:
Ermi, A. M.
Object Type:
Report
System:
The UNT Digital Library
2nd Workshop on Satellites for Solar Energy Assessments
A Collection of Presentations on new techniques for developing climatological estimates of the solar resource at all locations on earth at a resolution of 100km, and of developing estimates at half-hour intervals at resolutions of 10 km or less in specific locations.
Date:
June 28, 1999
Creator:
Renne, D.
Object Type:
Article
System:
The UNT Digital Library
3D finite-difference frequency-domain code for electromagnetic induction tomography
The effect of shrapnel on target chamber components and experiments at large lasers such as the National Ignition Facility at LLNL and the Megajoule Laser at CESTA in France is an important issue in fielding targets and exposure samples. Modeling calculations are likely to be an important component of this effort. Some work in this area has been performed by French workers, who are collaborating with the LLNL on many issues relating to target chamber, experiment-component, and diagnostics survival. Experiments have been performed at the PhCbus laser in France to measure shrapnel produced by laser-driven targets; among these shots were experiments that accelerated spheres of a size characteristic of some of the more damaging shrapnel. These spheres were stopped in polyethylene witness plates. The penetration depth is characteristic of the velocity of the shrapnel. Experimental calibration of steel sphere penetration into polyethylene was performed at the CESTA facility. The penetration depth has been reported (ref. 1) and comparisons with modeling calculations have been made (ref. 2). There was interest in a comparison study of the modeling of these experiments to provide independent checks of the calculations. This work has been approved both by DOE headquarters and by the French Atomic …
Date:
July 28, 1999
Creator:
Berryman, J. G.; Champagne, N. J., II & Buettner, H. M.
Object Type:
Article
System:
The UNT Digital Library
Accelerating Thick Aluminum Liners Using Pulsed Power
The authors have investigated the acceleration of very thick cylindrical aluminum liners using the Pegasus II capacitory bank. These accelerated solid liners will be used to impact other objects at velocities below 1.5 km/sec, allowing one to generate and sustain shocks of a few 100 kilobar for a few microseconds. A cylindrical shell of 1100 series aluminum with an initial inner radius of 23.61 mm, an initial thickness of 3.0 mm, and a height of 20 mm, was accelerated using a current pulse of 7.15 MA peak current and a 7.4 microsecond quarter cycle time. The aluminum shell was imploded within confining copper glide planes with decreasing separation with an inward slope of 8 degrees. At impact with a cylindrical target of diameter 3-cm, the liner was moving at 1.4 km/sec and its thickness increased to 4.5 mm. Radial X-ray radiograms of the liner showed both the liner and the glide plane interface. The curvature of the inner surface of the liner was measured before impact with the 15-mm radius target. The radiograms also showed that the copper glide planes distorted as the liner radius decreased and that some axial stress is induced in the liner. The axial stresses did …
Date:
June 28, 1999
Creator:
Kyrala, George A.; Hammerburg, James E.; Bowers, David; Stokes, John; Morgan, Dane V.; Anderson, Wally E. et al.
Object Type:
Article
System:
The UNT Digital Library
Actinide Biocolloid Formation in Brine by Halophilic Bacteria
We examined the ability of a halophilic bacterium (WFP 1A) isolated from the Waste Isolation Pilot Plant (WIPP) site to accumulate uranium in order to determine the potential for biocolloid facilitated actinide transport. The bacterial cell Surface functional groups involved in the complexation of the actinide were determined by titration. Uranium, added as uranyl nitrate, was removed from solution at pH 5 by cells but at pH 7 and 9 very little uranium was removed due to its limited volubility. Although present as soluble species, uranyl citrate at pH 5, 7, and 9, and uranyl carbonate at pH 9 were not removed by the bacterium because they were not bioavailable due to their neutral or negative charge. Addition of uranyl EDTA to brine at pH 5, 7, and 9 resulted in the immediate precipitation of U. Transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS) analysis revealed that uranium was not only associated with the cell surface but also accumulated intracellulary as uranium-enriched granules. Extended X-ray absorption fine structure (EXAFS) analysis, of the bacterial cells indicated the bulk sample contained more than one uranium phase. Nevertheless these results show the potential for the formation of actinide bearing bacterial biocolloids …
Date:
July 28, 1999
Creator:
Gillow, J. B.; Francis, A. J.; Dodge, C. J.; Harris, R.; Beveridge, T. J.; Brady, P. V. et al.
Object Type:
Article
System:
The UNT Digital Library
Activity plan for activity E-20-81: development and experimental validation of crevice corrosion models
Alloy 22 [UNS N06022] is now being considered for construction of high level waste containers to be emplaced at the potential repository at Yucca Mountain or elsewhere. In essence, this alloy is 21% Cr, 13% Mo, 4% Fe, 3% W, 2% Co, with the balance being Ni. Variants without tungsten are also being considered. Detailed mechanistic models are being developed to account for the corrosion of Alloy 22 surfaces in crevices that will inevitably form. Such occluded areas experience substantial decreases in pH, with corresponding elevations in chloride concentration. Other relevant materials will also be investigated: nickel-based alloys such as Alloys 825, 625, C-4, C-276 and 59; titanium-based alloys such as Grades 12, 7 and 16, carbon steels such as A516 Grade 55; stainless steels such as 304, 304L, 316, 316L and 316NG; various copper-based alloys; and any materials that would serve as crevice formers (rock, thermally-sprayed ceramics, etc.). Experimental work has been undertaken to validate the crevice corrosion model, including parallel studies with 304 stainless steel. The crevice corrosion model is described in detail in scientific notebooks of the Principal Investigator, as well as other publications. Codes will be prepared in accordance with the YMP QP entitled ''Software Quality …
Date:
December 28, 1999
Creator:
Farmer, J C
Object Type:
Report
System:
The UNT Digital Library
Advanced research workshop: nuclear materials safety
The Advanced Research Workshop (ARW) on Nuclear Materials Safety held June 8-10, 1998, in St. Petersburg, Russia, was attended by 27 Russian experts from 14 different Russian organizations, seven European experts from six different organizations, and 14 U.S. experts from seven different organizations. The ARW was conducted at the State Education Center (SEC), a former Minatom nuclear training center in St. Petersburg. Thirty-three technical presentations were made using simultaneous translations. These presentations are reprinted in this volume as a formal ARW Proceedings in the NATO Science Series. The representative technical papers contained here cover nuclear material safety topics on the storage and disposition of excess plutonium and high enriched uranium (HEU) fissile materials, including vitrification, mixed oxide (MOX) fuel fabrication, plutonium ceramics, reprocessing, geologic disposal, transportation, and Russian regulatory processes. This ARW completed discussions by experts of the nuclear materials safety topics that were not covered in the previous, companion ARW on Nuclear Materials Safety held in Amarillo, Texas, in March 1997. These two workshops, when viewed together as a set, have addressed most nuclear material aspects of the storage and disposition operations required for excess HEU and plutonium. As a result, specific experts in nuclear materials safety have been …
Date:
January 28, 1999
Creator:
Jardine, L J & Moshkov, M M
Object Type:
Article
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 123, No. 35, Ed. 1 Thursday, January 28, 1999
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
January 28, 1999
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 124, No. 22, Ed. 1 Thursday, October 28, 1999
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
October 28, 1999
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
[Alberto Lopez with plaques]
Photograph of Alberto Lopez wearing a shirt and tie standing beside a wall lined with plaques, one of which reads "Surface Water Testing Contest 'Best in Texas'" and was dated March 7, 1995. Alberto Lopez had been with the City of Denton since the early 1980s. He had a degree in biology. In 2000, he was the Water Production Plant Supervisor for the City and had been elected the President of the Texas Water Utilities Association (TWUA) the same year.
Date:
February 28, 1999
Creator:
Cabrales, John
Object Type:
Photograph
System:
The Portal to Texas History
Altering the Equilibrium Condition in Sr-Doped Lanthanum Manganite
The material of choice for a solid oxide fuel cell cathode based on a yttria-stabilized zirconia (YSZ) electrolyte is doped lanthanum manganite, (La, Sr)MnO{sub 3}. It excels at many of the attributes necessary for a system to work at the required operating temperature and is flexible enough to allow for materials optimization. Although strontium-doping increases the electronic conductivity of the material, the ionic conductivity of the material remains negligible under operating conditions. Studies have shown that the internal equilibrium of the material heavily favors oxidation of the manganese and rather than the loss of lattice oxygen as a charge compensation mechanism. This lack of oxygen vacancies in the structure retards the ability of the material to conduct oxygen ions; thus the optimized system requires a large number of engineered triple point boundary locations to work efficiently. We have successfully doped the host LSM lattice to alter the interred equilibrium of the material to increase its ionic conductivity and thus lower the cathodic overpotential of the system. Our presentation will discuss these new materials, the results of cell tests, and a number of characterization experiments performed.
Date:
May 28, 1999
Creator:
Carter, J. D.; Krumpelt, M.; Vaughey, J. & Wang, X.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 99, No. 273, Ed. 1 Thursday, January 28, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 28, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 299, Ed. 1 Sunday, February 28, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 28, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 12, Ed. 1 Sunday, March 28, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 28, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 35, Ed. 1 Wednesday, April 28, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 28, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 60, Ed. 1 Friday, May 28, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 28, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 85, Ed. 1 Monday, June 28, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 28, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 110, Ed. 1 Wednesday, July 28, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 28, 1999
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 163, Ed. 1 Tuesday, September 28, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 28, 1999
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 189, Ed. 1 Thursday, October 28, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 28, 1999
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 216, Ed. 1 Sunday, November 28, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 28, 1999
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 100, No. 242, Ed. 1 Tuesday, December 28, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 28, 1999
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, April 28, 1999
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
April 28, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History