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375 Matching Results
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Long-range-ordered alloys modified by Group IV-B metals
Ductile long range ordered alloys having high critical ordering temperatures exist in the (V,M)(Fe,Ni,Co)/sub 3/ system having the composition comprising by weight 20.6 to 22.6% V, 14 to 50% Fe, 0 to 64% Co, and 0 to 40% Ni, and 0.4 to 1.4% M, where M is a metal selected from the group consisting of Ti, Zr, Hf, and their mixtures. These modified alloys have an electron density no greater than 8.00 and exhibit marked increases at elevated temperature in ductility and other mechanical properties over previously known ordered alloys.
Date:
May 22, 1981
Creator:
Liu, Chain T.; Inouye, Henry & Schaffhauser, Anthony C.
Object Type:
Patent
System:
The UNT Digital Library
Nonlinear ion-cyclotron waves in mirror machines. Paper IAEA-CN-38/S-1
Experimental results on ion-cyclotron waves observed in the 2XIIB mirror machine are reviewed, and relevant theoretical work is discussed. The work reported generally substantiates the quasilinear diffusion model of mirror-plasma confinement, but also suggests alternatives. The end-loss current required by theory of the drift-cyclotron loss-cone (DCLC) instability agrees with measurements of this current. The experiment indicates that an increased ratio of plasma radius to ion gyroradius improves plasma confinement. However, measurements sometimes show a second ion-cyclotron mode, which is not the DCLC mode. Theoretical work on loss-cone instabilities has concentrated on linear, quasilinear, and fully nonlinear models of increased sophistication and experimental applicability.
Date:
May 22, 1980
Creator:
Cohen, B. I.; Smith, G. R. & Berk, H. L.
Object Type:
Article
System:
The UNT Digital Library
Plasma confinement experiments in the TMX tandem mirror. Paper IAEA-CN-38/F-1
Results from the new Tandem Mirror Experiment (TMX) are described. Tandem-mirror density and potential profiles are produced using end-plug neutral-beam injection and central-cell gas-fueling. TMX parameters are near those predicted theoretically. The end-plug electron temperature is higher than in the comparably sized single-mirror 2XIIB. Axial confinement of the finite-beta central-cell plasma is improved by the end plugs by as much as a factor of 9. In TMX, end-plug microinstability limits central-cell confinement in agreement with theory.
Date:
May 22, 1980
Creator:
Simonen, T. C.; Anderson, C. A. & Casper, T. A.
Object Type:
Article
System:
The UNT Digital Library
Harmonic generation of ion waves due to Brillouin backscattering
We report results of simulations of stimulated Brillouin backscatter in which we see the second spatial harmonic of the ion density fluctuation and compare with linear, fluid theory. We also describe examples of the competition between Raman and Brillouin backscatter. 21 refs., 3 figs.
Date:
May 22, 1985
Creator:
Estabrook, K.; Kruer, W. L. & Haines, M. G.
Object Type:
Article
System:
The UNT Digital Library
Review of geochemical measurement techniques for a nuclear waste repository in bedded salt
A broad, general review is presented of geochemical measurement techniques that can provide data necessary for site selection and repository effectiveness assessment for a radioactive waste repository in bedded salt. The available measurement techniques are organized according to the parameter measured. The list of geochemical parameters include all those measurable geochemical properties of a sample whole values determine the geochemical characteristics or behavior of the system. For each technique, remarks are made pertaining to the operating principles of the measurement instrument and the purpose for which the technique is used. Attention is drawn to areas where further research and development are needed.
Date:
May 22, 1980
Creator:
Knauss, K.G. & Steinborn, T.L.
Object Type:
Report
System:
The UNT Digital Library
Catalytic-cartridge SO/sub 3/ decomposer
A catalytic cartridge internally heated is utilized as a SO/sub 3/ decomposer for thermochemical hydrogen production. The cartridge has two embodiments, a cross-flow cartridge and an axial flow cartridge. In the cross-flow cartridge, SO/sub 3/ gas is flowed through a chamber and incident normally to a catalyst coated tube extending through the chamber, the catalyst coated tube being internally heated. In the axial-flow cartridge, SO/sub 3/ gas is flowed through the annular space between concentric inner and outer cylindrical walls, the inner cylindrical wall being coated by a catalyst and being internally heated. The modular cartridge decomposer provides high thermal efficiency, high conversion efficiency, and increased safety.
Date:
May 22, 1981
Creator:
Galloway, Terry R.
Object Type:
Patent
System:
The UNT Digital Library
Theory of field-reversed mirrors and field-reversed plasma-gun experiments. Paper IAEA-CN-38/R-2
Experimental and theoretical studies of field reversal in a mirror machine are reported. Plasma-gun experiments demonstrate that reversed-field plasma layers are formed. Low energy plasma flowing behind the initially produced plasma front prevents tearing of the layer from the gun muzzle. MHD simulation shows that tearing can be obtained by impeding the slow plasma flow with a plasma divider. It is demonstrated theoretically that a field-reversed mirror imbedded in a multipole field can be sustained in steady state with neutral-beam injection even in the absence of impurities. MHD stability analysis shows that growth rates of elongated reversed-field theta-pinch configurations decrease with axial extension, which indicates the importance of including finite Larmor radius in the analysis. Tilting-mode criteria are dramatically improved by proper shaping, and a problimak shape is proposed. Tearing mode stability of reversed-field theta-pinches is greatly enhanced by flux exclusion. Self-consistent, 1-1/2-dimensional transport codes have been developed, and initial results are presented.
Date:
May 22, 1980
Creator:
Anderson, D.V.; Auerbach, S.P. & Berk, H.L.
Object Type:
Article
System:
The UNT Digital Library
[News Clip: Man Pickets]
Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany a news story by reporter Regina Benjamin about Richard Byron (sp.) who protests weekly outside his ex-wife's home with the hope of recovering the home and furnishings awarded to her in their divorce proceedings. The story includes footage of Byron protesting, an interview with an unidentified woman concerning a legal decision to limit him to 1 hour of protest per week, and an unidentified neighbor. This story aired at 6:00 P.M.
Date:
May 22, 1985
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 78, No. 21, Ed. 1 Thursday, May 22, 1986
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
May 22, 1986
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 72, No. 21, Ed. 1 Thursday, May 22, 1980
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
May 22, 1980
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
[News Clip: Rowlett]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Gas / miles]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Rescue]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Littlest Angels]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: DHA Discrimination]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: DISD Budget]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Pyramid Victims]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Pyramid Plan]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: DISD Budget]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Building]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: DHA Discrimination]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
The Bogata News (Bogata, Tex.), Vol. 75, No. 33, Ed. 1 Thursday, May 22, 1986
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
May 22, 1986
Creator:
Nichols, Nanalee & Nichols, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
[News Clip: Pyramid]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
May 22, 1980, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Noether's therorem for local gauge transformations
The variational methods of classical field theory may be applied to any theory with an action which is invariant under local gauge transformations. What is the significance of the resulting Noether current. This paper examines such currents for both Abelian and non-Abelian gauge theories and provides an explanation for their form and limited range of physical significance on a level accessible to those with a basic knowledge of classical field theory. Several of the more subtle aspects encountered in the application of the residual local gauge symmetry found by Becchi, Rouet, Stora, and Tyutin are also considered in detail in a self-contained manner. 23 refs.
Date:
May 22, 1989
Creator:
Karatas, D.L. & Kowalski, K.L.
Object Type:
Report
System:
The UNT Digital Library