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Materials processing using a variable frequency microwave furnace

Description: We describe a materials processing system that uses a high power traveling wave tube (TWT) as the microwave source. The TWT provides approximately one octave bandwidth and variable power levels up to 2 kW into a multimode cavity. By controlling the frequency, efficient coupling to the load can be maintained even as the load`s dielectric properties change. Alternatively, can be used as a means of mode stirring at rates far beyond those attainable through mechanical stirring. The system has been … more
Date: December 31, 1993
Creator: Lauf, R. J.; Bible, D. W.; Maddox, S. R.; Everleigh, C. A.; Espinosa, R. J. & Johnson, A. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Economic assessment of the utilization of lead-acid batteries in electric utility systems. Final report

Description: Specific applications in which lead--acid batteries might be economically competitive on an electric utility system are identified. Particular attention is given to searching the Public Service Electric and Gas Company (PSE and G) system for installations of batteries which could defer or cancel costly transmission and/or distribution projects. Although the transmission and distribution data are based on specific applications on the PSE and G system, the generation data are based on a national … more
Date: April 1, 1977
Creator: Johnson, A.C.; Hynds, J.A.; Nevius, D.R.; Nunan, G.A. & Sweetman, N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mining Methods and Costs, Black Rock Tungsten Mine, Wah Chang Mining Corp., Mono County, California

Description: Report issued by the U.S. Bureau of Mines discussing mining costs and methods of the Black Rock Tungsten Mine in Mono County, California. As stated in the summary, "this report is one of a series prepared by the Bureau of Mines on exploration, development, mining methods, and costs at various mines in the United States" (p. 1). This report includes maps, illustrations, and photographs.
Date: 1960
Creator: Johnson, A. C. & Fillip, N. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mining Methods and Costs, Lincoln Tungsten Mine, Wah Chang Mining Corporation, Lincoln County, Nevada

Description: Report issued by the U.S. Bureau of Mines discussing tungsten mining operations conducted in Lincoln County, Nevada. As stated in the summary, "this paper is one of a series being prepared by the Bureau of Mines on exploration, development, mining methods and costs at various mines in the United States" (p. 1). This report includes tables, maps, illustrations, and a photograph.
Date: 1959
Creator: Johnson, A. C. & McDonald, Ross M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Studies of methyl bromide in greenhouse and vault fumigation.

Description: Describes the results of scientific research regarding the effectiveness of methyl bromide as an insecticide in greenhouse and vault fumigation.
Date: September 1943
Creator: Richardson, Henry H. (Henry Howe), 1906-; Johnson, A. C. (Alpha Cornelius), b. 1889; Bulger, Jacob Work, 1887-; Casanges, A. H. & Johnson, George V. (George Victor), 1910-
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
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