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160 C PROTON EXCHANGE MEMBRANE (PEM) FUEL CELL SYSTEM DEVELOPMENT
The objectives of this program were: (a) to develop and demonstrate a new polymer electrolyte membrane fuel cell (PEMFC) system that operates up to 160 C temperatures and at ambient pressures for stationary power applications, and (b) to determine if the GTI-molded composite graphite bipolar separator plate could provide long term operational stability at 160 C or higher. There are many reasons that fuel cell research has been receiving much attention. Fuel cells represent environmentally friendly and efficient sources of electrical power generation that could use a variety of fuel sources. The Gas Technology Institute (GTI), formerly Institute of Gas Technology (IGT), is focused on distributed energy stationary power generation systems. Currently the preferred method for hydrogen production for stationary power systems is conversion of natural gas, which has a vast distribution system in place. However, in the conversion of natural gas into a hydrogen-rich fuel, traces of carbon monoxide are produced. Carbon monoxide present in the fuel gas will in time cumulatively poison, or passivate the active platinum catalysts used in the anodes of PEMFC's operating at temperatures of 60 to 80 C. Various fuel processors have incorporated systems to reduce the carbon monoxide to levels below 10 ppm, …
Date:
December 21, 2001
Creator:
Marianowski, L. G.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 31, No. 3, Ed. 1 Friday, September 21, 2001
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
September 21, 2001
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
17th Edition of TOP500 List of World's Fastest SupercomputersReseased
17th Edition of TOP500 List of World's Fastest Supercomputers Released MANNHEIM, GERMANY; KNOXVILLE, TENN.; BERKELEY, CALIF. In what has become a much-anticipated event in the world of high-performance computing, the 17th edition of the TOP500 list of the world's fastest supercomputers was released today (June 21). The latest edition of the twice-yearly ranking finds IBM as the leader in the field, with 40 percent in terms of installed systems and 43 percent in terms of total performance of all the installed systems. In second place in terms of installed systems is Sun Microsystems with 16 percent, while Cray Inc. retained second place in terms of performance (13 percent). SGI Inc. was third both with respect to systems with 63 (12.6 percent) and performance (10.2 percent).
Date:
June 21, 2001
Creator:
Strohmaier, Erich; Meuer, Hans W.; Dongarra, Jack J. & Simon,Horst D.
Object Type:
Report
System:
The UNT Digital Library
Accessing the Inaccessible: The Case for Opening up Russia's Closed Cities
The selling of weapons-related nuclear knowledge by Russian scientists for economic gain constitutes a threat to US national security. Some estimate that the number of Russian scientists seeking permanent employment abroad constitute five to ten percent of all researchers who have left the field of science. And, there is concern that those who have left are ''the better minds.'' Moreover, the issue of brain drain concerns not only those who move abroad permanently, but those who still reside in Russia and travel abroad to sell their knowledge. Of particular concern to the US is the potential sale of WMD knowledge by some. To ''mitigate the risk that economic difficulties...might create the temptation for individuals or institutes to sell expertise to countries of proliferation concern and terrorist organizations,'' the Department of Energy launched a Nuclear Cities Initiative (NCI) in 1998 with the goal of creating commercial jobs and economic diversification in the ten closed cities that form the core of Russia's nuclear weapons complex to accommodate the loss of employment in the nuclear weapons industry. However, unless Russia opens access to the areas of its closed cities that are, or could become, involved in commercial activities-while of course carefully controlling access …
Date:
March 21, 2001
Creator:
Ball, D Y
Object Type:
Article
System:
The UNT Digital Library
Actinide-Aluminate Speciation in Alkaline Radioactive Waste
Investigation of behavior of actinides in alkaline media containing AL(III) showed that no aluminate complexes of actinides in oxidation states (IIII-VIII) were formed in alkaline solutions. At alkaline precipitation IPH (10-14) of actinides in presence of AL(III) formation of aluminate compounds is not observed. However, in precipitates contained actinides (IIV)<(VI), and to a lesser degree actinides (III), some interference of components takes place that is reflected in change of solid phase properties in comparison with pure components or their mechanical mixture. The interference decreases with rise of precipitation PH and at PH 14 is exhibited very feebly. In the case of NP(VII) the individual compound with AL(III) is obtained, however it is not aluminate of neptunium(VII), but neptunate of aluminium(III) similar to neptunates of other metals obtained earlier.
Date:
December 21, 2001
Creator:
Clark, Dr. David L. & Fedosseev, Dr. Alexander M.
Object Type:
Report
System:
The UNT Digital Library
Adapting MARSSIM for FUSRAP site closure.
The Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM) provides a coherent, technically defensible process for establishing that exposed surfaces satisfy site cleanup requirements. Unfortunately, many sites have complications that challenge a direct application of MARSSIM. Example complications include Record of Decision (ROD) requirements that are not MARSSIM-friendly, the potential for subsurface contamination, and incomplete characterization information. These types of complications are typically the rule, rather than the exception, for sites undergoing radiologically-driven remediation and closure. One such site is the Formerly Utilized Sites Remedial Action Program (FUSRAP) Linde site in Tonawanda, New York. Cleanup of the site is currently underway. The Linde site presented a number of challenges to designing and implementing a closure strategy consistent with MARSSIM. This paper discusses some of the closure issues confronted by the U.S. Army Corps of Engineers Buffalo District at the Linde site, and describes how MARSSIM protocols were adapted to address these issues.
Date:
December 21, 2001
Creator:
Johnson, R.; Durham, L.; Rieman, C. & Hoover, R.
Object Type:
Article
System:
The UNT Digital Library
Advanced Emission Reduction Technologies for Locomotives: Emission Testing
None
Date:
January 21, 2001
Creator:
Fritz, Steven G.
Object Type:
Article
System:
The UNT Digital Library
Advanced Emission Reduction Technologies for Locomotives: Fuels and Lubes
None
Date:
January 21, 2001
Creator:
Fritz, Steven G.
Object Type:
Article
System:
The UNT Digital Library
Advanced Wavefront Control Techniques
Programs at LLNL that involve large laser systems--ranging from the National Ignition Facility to new tactical laser weapons--depend on the maintenance of laser beam quality through precise control of the optical wavefront. This can be accomplished using adaptive optics, which compensate for time-varying aberrations that are often caused by heating in a high-power laser system. Over the past two decades, LLNL has developed a broad capability in adaptive optics technology for both laser beam control and high-resolution imaging. This adaptive optics capability has been based on thin deformable glass mirrors with individual ceramic actuators bonded to the back. In the case of high-power lasers, these adaptive optics systems have successfully improved beam quality. However, as we continue to extend our applications requirements, the existing technology base for wavefront control cannot satisfy them. To address this issue, this project studied improved modeling tools to increase our detailed understanding of the performance of these systems, and evaluated novel approaches to low-order wavefront control that offer the possibility of reduced cost and complexity. We also investigated improved beam control technology for high-resolution wavefront control. Many high-power laser systems suffer from high-spatial-frequency aberrations that require control of hundreds or thousands of phase points to …
Date:
February 21, 2001
Creator:
Olivier, S. S.; Brase, J. M.; Avicola, K.; Thompson, C. A.; Kartz, M. W.; Winters, S. et al.
Object Type:
Report
System:
The UNT Digital Library
After Treatment (Emissions) Issues for Locomotives in the Future
None
Date:
January 21, 2001
Creator:
Patten, Jim
Object Type:
Presentation
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. [126], No. [4], Ed. 1 Thursday, June 21, 2001
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
June 21, 2001
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 101, No. 267, Ed. 1 Sunday, January 21, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 21, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 294, Ed. 1 Wednesday, February 21, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 21, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 6, Ed. 1 Wednesday, March 21, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 21, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 58, Ed. 1 Monday, May 21, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 21, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 85, Ed. 1 Thursday, June 21, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 21, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 147, Ed. 1 Tuesday, August 21, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 21, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 174, Ed. 1 Friday, September 21, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 21, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 199, Ed. 1 Sunday, October 21, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 21, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 102, No. 226, Ed. 1 Wednesday, November 21, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 21, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 103, No. 252, Ed. 1 Friday, December 21, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 21, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, February 21, 2001
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
February 21, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, March 21, 2001
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
March 21, 2001
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, November 21, 2001
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
November 21, 2001
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History