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404
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47
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1 - 24 of
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1 MeV electron irradiation of solid Xe nanoclusters in Al : an in-situ HRTEM study.
Thin film samples of a simple embedded nanocluster system consisting of solid Xe precipitates in Al have been subjected to 1 MeV electron irradiation in a high-voltage electron microscope. High-resolution images have been recorded on videotape in order to monitor the changes to the system resulting from the passage of electrons through the film. Inspection of the video recordings (in some cases frame-by-frame) reveals that complex, rapid processes occur under the electron beam. These include, movement of small clusters, coalescence of neighboring clusters, shape changes, the apparent melting and resolidification of the Xe, and the creation and annealing of extended defects within the Xe lattice. A tentative interpretation of some of the observations is presented in terms of the electron-induced displacement processes at the surface of the clusters.
Date:
December 5, 1997
Creator:
Donnelly, S. E.; Furuya, K.; Song, M.; Birtcher, R. C. & Allen, C. W.
Object Type:
Article
System:
The UNT Digital Library
60-day waste compatibility safety issues and final results for TX-244 grab samples
Three grab samples (244-TX-96-1, 244-TX-96-2, and 244-TX-96-3) were taken from Riser 8 of Tank 241-TX-244 on October 18, 1996, and received by 222-S Laboratory on October 18, 1996. These samples were analyzed in accordance with Compatibility Grab Sampling and Analysis Plan (TSAP) and Data Quality Objectives for Tank Farms Waste Compatibility Program (DQO) in support ofthe Waste Compatibility Program. Notifications were made in accordance with TSAP for pH and OH- analyses. Upon further review, the pH notification was deemed unnecessary, as the notification limit did not apply to this tank.
Date:
February 5, 1997
Creator:
Nuzum, J. L.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 27, No. 13, Ed. 1 Friday, December 5, 1997
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
December 5, 1997
Creator:
Easttom, Holly
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
1997 Gordon Research Conference on Molecular Electronic Spectroscopy. Final Progress Report
None
Date:
September 5, 1997
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
Activation and micropore structure determination of activated carbon-fiber composites
Rigid, high surface area activated carbon fiber composites have been produced with high permeabilities for environmental applications in gas and water purification. These novel monolithic adsorbents can be produced in single pieces to a given size and shape. The project involves a collaboration between the Oak Ridge National Laboratory (ORNL) and the Center for Applied Energy Research (CAER), University of Kentucky. The carbon fiber composites are produced at the ORNL and activated at the CAER using different methods, with the aims of producing a uniform degree of activation, and of closely controlling pore structure and adsorptive properties. The main focus of the present work has been to find a satisfactory means to uniformly activate large samples of carbon fiber composites and produce controlled pore structures. Several environmental applications have been explored for the activated carbon fiber composites. One of these was to evaluate the activated composites for the separation of CH{sub 4}-CO{sub 2} mixtures, and an apparatus was constructed specifically for this purpose. The composites were further evaluated in the cyclic recovery of volatile organics. The activated carbon fiber composites have also been tested for possible water treatment applications by studying the adsorption of sodium pentachlorophenolate, PCP.
Date:
September 5, 1997
Creator:
Jagtoyen, M.; Derbyshire, F. & Kimber, G.
Object Type:
Report
System:
The UNT Digital Library
Advanced hardware and software methods for thread and gear dimensional metrology. CRADA final report
The Oak Ridge Centers for Manufacturing Technology (ORCMT) and Apeiron Incorporated have collaborated on an effort to develop a frequency modulated continuous wave (FMCW) fiber lidar system for dimensional metrology of internal threads, gears, and splines. The purpose of this effort was to assist a small company in developing an instrument that would exceed the performance of competing foreign instruments and provide measurement capabilities necessary to assure compliance for NASA facilities and other industrial facilities. The two parties collaborated on design, assembly, and bench testing of the prototype instrument. The prototype system was targeted to have the capability of profiling internally machined gears and threads to an accuracy of less than a micron.
Date:
March 5, 1997
Creator:
Miller, A. C., Jr. & Grann, E. B.
Object Type:
Report
System:
The UNT Digital Library
Advanced power conversion based on the Aerocapacitor{trademark}. Final report
This report summarizes work performed under contract No. DE-FC07-94ID13283, {open_quotes}Advanced Power Conversion Based on the Aerocapacitors{trademark}.{close_quotes} Under this contract high power density, high energy density, organic electrolyte Aerocapacitors{trademark} were developed and characterized for power conversion applications. Pilot facilities for manufacturing prototype AA-size Aerocapacitors{trademark} were put in place. The low ESR and good frequency response of these devices show that they are ideal components for high discharge rate and low to moderate frequency (< 10 kHz) applications such as power conversion.
Date:
March 5, 1997
Creator:
Roark, D.
Object Type:
Report
System:
The UNT Digital Library
Advanced process research and development to enhance metals and materials recycling.
Innovative, cost-effective technologies that have a positive life-cycle environmental impact and yield marketable products are needed to meet the challenges of the recycling industry. Four materials-recovery technologies that are being developed at Argonne National Laboratory in cooperation with industrial partners are described in this paper: (1) dezincing of galvanized steel scrap; (2) material recovery from auto-shredder residue; (3) high-value-plastics recovery from obsolete appliances; and (4) aluminum salt cake recycling. These technologies are expected to be applicable to the production of low-cost, high-quality raw materials from a wide range of waste streams.
Date:
December 5, 1997
Creator:
Daniels, E. J.
Object Type:
Article
System:
The UNT Digital Library
[Aerial View of Arden Terrace Park and Surrounding Area]
Photograph of Arden Terrace Park and its surrounding area located in Dallas, Texas. The park is shown near the center of the photograph, and it sits between Fivemile Creek at the bottom and a residential area at the top of the picture.
Date:
April 5, 1997
Creator:
Loftin, Reginald G.
Object Type:
Photograph
System:
The Portal to Texas History
[Aerial View of Dallas Nature Center and Surrounding Area]
Photograph of Dallas Nature Center and its surrounding area in Dallas, Texas. The nature center, which appears as a large area of land covered in dense trees, occupies the center of the photograph, directly above a road. Subdivisions are visible in the distance.
Date:
April 5, 1997
Creator:
Loftin, Reginald G.
Object Type:
Photograph
System:
The Portal to Texas History
[Aerial View of Deep Green and Surrounding Area]
Photograph of Deep Green and its surrounding area in Dallas, Texas. The park, which is covered in dense trees, sits directly beneath Mountain Creek Parkway and to the right of Deep Green Drive. Autumncrest Court and a residential suburb are also visible on the left edge of the picture.
Date:
April 5, 1997
Creator:
Loftin, Reginald G.
Object Type:
Photograph
System:
The Portal to Texas History
[Aerial View of Deep Green and Surrounding Area]
Photograph of Deep Green and its surrounding area in Dallas, Texas. The park, which is covered in dense trees, sits to the right of Foxhaven Drive, Knoll Ridge Drive, Creekbluff Drive, and a residential suburb.
Date:
April 5, 1997
Creator:
Loftin, Reginald G.
Object Type:
Photograph
System:
The Portal to Texas History
African Elephant Issues: CITES and CAMPFIRE
The conservation of African elephants has been controversial recently on two fronts: the Convention on International Trade in Endangered Species (CITES, to which the United States is a party), and a Zimbabwean program for sustainable development called CAMPFIRE, which is partially funded by the U.S. Agency for International Development (USAID). Two controversies have sprung up recently about the African elephant. One is the changing status of this species under the Convention on International Trade in Endangered Species (CITES), of which the United States is a signatory. The other is over a program in Zimbabwe called "CAMPFIRE." The partial funding of this program by the U.S. Agency for International Development has been criticized by animal welfare groups and some conservation groups, though it has been supported by other conservation groups as well as many hunting organizations.
Date:
August 5, 1997
Creator:
Corn, M. Lynne & Fletcher, Susan R.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 122, No. 1, Ed. 1 Thursday, June 5, 1997
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
June 5, 1997
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 96, No. 254, Ed. 1 Sunday, January 5, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 5, 1997
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 96, No. 280, Ed. 1 Wednesday, February 5, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 5, 1997
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 96, No. 304, Ed. 1 Wednesday, March 5, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 5, 1997
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 97, No. 45, Ed. 1 Monday, May 5, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 5, 1997
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 97, No. 70, Ed. 1 Thursday, June 5, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 5, 1997
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 98, No. 119, Ed. 1 Tuesday, August 5, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 5, 1997
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 98, No. 145, Ed. 1 Friday, September 5, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 5, 1997
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 98, No. 170, Ed. 1 Sunday, October 5, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 5, 1997
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 98, No. 198, Ed. 1 Wednesday, November 5, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 5, 1997
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 98, No. 222, Ed. 1 Friday, December 5, 1997
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 5, 1997
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History