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4,615
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484
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353
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319
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266
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258
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229
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Oklahoma Publishing Company Photography Collection
7,407
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5,688
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5,130
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4,474
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4,206
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2,386
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2,162
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787
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665
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AH-1W Firing Test
Footage of an AH-1W SuperCobra weapons test. The film covers test flights 278B, 281A, and 281B and features the tests of the LAU-10 and LAU-61 launchers and the CBU-55 cluster bomb. No sound.
Date:
{1985-07-12,1985-07-18}
Creator:
Bell Helicopter Textron
Object Type:
Video
System:
The UNT Digital Library
BF-2094: AH-1W Firing Test
Slow-motion footage of an AH-1W SuperCobra test firing the LAU-10 rocket launcher. The film covers test flights 282, 283, and 284. No sound.
Date:
{1985-07-19,1985-07-22}
Creator:
Bell Helicopter Textron
Object Type:
Video
System:
The UNT Digital Library
[Botanic Garden Youth Activities]
Photograph of a youth activity at the Fort Worth Botanic Garden. Multiple children are visible sitting in a grass lawn, each holding a small paper and pencil, with one boy holding out a paper bag. In front of them is a partially obscured adult facing away from the camera and a paper resting on the grass containing an image of a tree's branch with leaves attached on twigs
Date:
[..1985-06]
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
Phi Theta Kappa sponsors, Nora Burge, Ben Meis and Wanda Ellis
Photograph of a man and two women standing side by side.
Date:
Fall 1985
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
Texas Transit Statistics: 1984
Annual compilation of tabulated data regarding public transit and other transportation in the state of Texas.
Date:
~1985
Creator:
Texas. Division of Public Transportation.
Object Type:
Report
System:
The Portal to Texas History
Texas Transit Statistics: 1985
Annual compilation of tabulated data regarding public transit and other transportation in the state of Texas.
Date:
~1985
Creator:
Texas. Division of Public Transportation.
Object Type:
Report
System:
The Portal to Texas History
N = 2 Maxwell-Einstein Supergravity Theories: Their Compact and Non-Compact Gaugings and Jordan Algebras
In this talk we give a review of our work on the construction and classification of N = 2 Maxwell-Einstein Supergravity theories (MESGT), study of the underlying algebraical and geometrical structure of these theories, and their compact and non-compact gaugings. We begin by summarizing our construction of the N = 2 MESGT's in five dimensions and give a geometrical interpretation to various scalar dependent quantities in the Lagrangian, based on the constraiants implied by supersymmetry. This is followed by a complete classification of the N = 2 MESGT's whose target manifolds parametrized by the scalar fields are symmetric spaces. 39 refs.
Date:
January 1, 1985
Creator:
Guenaydin, M.; Sierra, G. & Townsend, P.K.
Object Type:
Article
System:
The UNT Digital Library
10-MHz high-voltage modulator with pulse-width and repetition-rate agility
Requirements for control and rapid switching of the proton beam at the Los Alamos Meson Physics Facility (LAMPF) are continually revised to support accelerator upgrades and modifications. A recent upgrade required the development of a 10-MHz high-voltage modulator for an electrostatic kicker with real-time control of pulse width and repetition rate over a range of four decades. The modulator must be capable of producing a voltage pulse across a capacitive load with a rise time of less than or equal to20 ns (10% to 90%). In addition the falling edge undershoot must be controlled to less than one part in 10/sup 3/. The paper describes in detail the circuit design philosophy, layout, and critical areas in system design.
Date:
January 1, 1985
Creator:
Krausse, G.J.
Object Type:
Article
System:
The UNT Digital Library
20 keV undulators for a 6-GeV storage ring
The main goal of the future 6-GeV electron storage ring is to provide 20-keV fundamental harmonic radiations from insertion devices. Parameter restrictions of REC-vanadium permendur hybrid undulators have been examined. The critical factor is the achievable minimum gap of the undulator. Variations of the spectral brilliance for different beam parameters are also shown. 6 refs., 5 figs.
Date:
January 1, 1985
Creator:
Kim, S. H. & Cho, Y.
Object Type:
Article
System:
The UNT Digital Library
32-Bit computer for large memory applications on FASTBUS
A FASTBUS based 32-bit computer is being built at Los Alamos National Laboratory for use in systems requiring large fast memory in the FASTBUS environment. A separate local execution bus allows data reduction to proceed concurrently with other FASTBUS operations. The computer, which can operate in either master or slave mode, includes the National Semiconductor NS32032 chip set with demand paged memory management, floating point slave processor, interrupt control unit, timers, and time-of-day clock. The 16.0 megabytes of random access memory are interleaved to allow windowed direct memory access on and off the FASTBUS at 80 megabytes per second.
Date:
January 1, 1985
Creator:
Blossom, J. M.; Hong, J. P. & Kellner, R. G.
Object Type:
Article
System:
The UNT Digital Library
32-Bit FASTBUS computer
Los Alamos National Laboratory is building a 32-bit FASTBUS computer using the NATIONAL SEMICONDUCTOR 32032 central processing unit (CPU) and containing 16 million bytes of memory. The board can act both as a FASTBUS master and as a FASTBUS slave. It contains a custom direct memory access (DMA) channel which can perform 80 million bytes per second block transfers across the FASTBUS.
Date:
January 1, 1985
Creator:
Blossom, J.M.; Hong, J.P. & Kellner, R.G.
Object Type:
Article
System:
The UNT Digital Library
1500-MeV fixed-field alternating-gradient synchrotron for a pulsed-spallation neutron source
The first conceptual design of the FFAG for ASPUN was an 1100-MeV, 20-sector machine with an injection radius of 17.5 m and an extraction radius of 18.75 m. The conceptual design currently under study has a higher extraction energy, a larger average radius, but still has 20 sectors. The current interest in higher extraction energy is stimulated by calculations that indicate that the useful neutron production per incident proton is still increasing proportionally up to 1500 MeV. The larger radius also matches existing buildings at Argonne that could be made available for the facility. 11 refs., 4 figs., 3 tabs.
Date:
January 1, 1985
Creator:
Kustom, R.L.; Khoe, T.K. & Crosbie, E.A.
Object Type:
Article
System:
The UNT Digital Library
1983 ORNL intercomparison of personnel neutron and gamma dosemeters
The Ninth Personnel Dosimetry Intercomparison Study was conducted during April 19-21, 1983, at the Oak Ridge National Laboratory. Dosemeters from 33 participating agencies were mounted on water-filled polyethylene elliptical phantoms and exposed to a range of low-level dose equivalents (0.02-0.45 mSv gamma and 0.49-11.14 mSv neutron) which could be encountered during routine personnel monitoring in mixed radiation fields. The Health Physics Research Reactor served as the radiation source for six separate exposures which used four different shield conditions: unshielded and shielded with steel, steel/concrete, and concrete. Results of the neutron measurements indicate that it is not unusual for dose equivalent estimates made under the same conditions by different agencies to differ by more than a factor of 2. Albedo systems, which were the most popular neutron monitors in this study, provided the most accurate results with CR-39 recoil track being least accurate. Track and film neutron systems exhibited problems providing measurable indication of neutron exposure at dose equivalents of about 0.50 mSv. Gamma measurements showed that TLD and film systems generally overestimated dose equivalents in the mixed radiation fields with film exhibiting significant problems providing measurable indication of gamma exposure at dose equivalents lower than about 0.15 mSv. Under the …
Date:
January 1, 1985
Creator:
Swaja, R. E.; Sims, C. S. & Greene, R.T.
Object Type:
Report
System:
The UNT Digital Library
1985 Confirmation
Color photograph of a confirmation class dressed in white standing in front of the [Danevang Lutheran Church] whose door is open. Two girls are wearing white dresses and four boys are wearing white robes. An older man identified as Pastor Dan Lauderdale stands to the right of them and is wearing a red stole and a white robe embellished with red crosses. Each member of the class except for Pastor Lauderdale has a red flower pinned to their chest.
Date:
1985
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
1985 Follies Program
Program for a "Follies" performance by the Lawton Junior Service League. It includes information about the performance, the participants, and other context along with local advertising.
Date:
1985
Creator:
Lawton Junior Service League
Object Type:
Pamphlet
System:
The Gateway to Oklahoma History
1986 Calendar of Early Denton History
Calendar for 1986 containing photographs and historical facts about Denton, Texas, Denton County, Texas, and the surrounding areas. There are notes throughout the dates on the calendar as well as a timeline titled "More Denton County Trivia" at the end.
Date:
1985
Creator:
Friends of the Denton Public Library
Object Type:
Text
System:
The Portal to Texas History
26th Annual Report
The ACIR Library is composed of publications that study the interactions between different levels of government. This document is an annual report.
Date:
January 1985
Creator:
United States. Advisory Commission on Intergovernmental Relations.
Object Type:
Book
System:
The UNT Digital Library
2D ACAR momentum density study of the nature of the positron surface state on Al(100)
The two-dimensional angular correlation of the 2..gamma.. annihilation radiation (2D ACAR) has been measured from an Al(100) surface bombarded by 200-eV positrons. After removing the contribution of fast para-positronium annihilation, the spectrum from positrons annihilating at the surface exhibits a nearly isotropic conical shape with a (7.1 +- 0.5) mrad FWHM. 5 refs., 6 figs.
Date:
January 1, 1985
Creator:
Berko, S.; Canter, K. F.; Lynn, K. G.; Mills, A. P.; Roellig, L. O. & West, R. N.
Object Type:
Article
System:
The UNT Digital Library
3D calculations of a fixed field alternating gradient synchrotron magnet
A Spallation neutron source for materials science studies was designed at Argonne and required a fixed field alternating gradient (FFAG) synchrotron magnet. 3D electrostatic calculations were made to obtain the unsaturated magnet pole shape. This pole shape was refined using 3D magnetostatic calculations that included the steel permeability and coil geometry. Details of the calculations are given concerning such things as: size of the problem and how to split it up, the number and shape of the finite elements, choosing the electrostatic potential correctly and selecting the potential of the desired pole. 5 figs.
Date:
January 1, 1985
Creator:
Lari, R.J.
Object Type:
Article
System:
The UNT Digital Library
3lambda/4 post coupler for drift-tube linacs
New permanent magnets for quadrupole focusing make possible smaller drift tubes in drift-tube linacs (DTLs), resulting in higher shunt impedance. However, ordinary post couplers cannot stabilize a DTL whose drift-tube-to-wall spacing exceeds one-quarter wavelength (lambda/4) by more than a few per cent for the accelerating mode frequency. We have built and tested post couplers that operate in the 3lambda/4 mode. These 3lambda/4 post couplers, when substituted for lambda/4 couplers, had similar stabilization properties. In addition, the coupling between post and drift tube, and the post's resonant frequency can be independently adjusted. 5 refs., 5 figs.
Date:
January 1, 1985
Creator:
Billen, J. H.; Garcia, J. A.; Potter, J. M. & Spalek, G.
Object Type:
Article
System:
The UNT Digital Library
4X source
Our Penning surface-plasma source (SPS) discharge chamber was enlarged 4X in two dimensions. To date, three pulsed discharge modes have been studied: two with noisy arc (greater than or equal to 20% H/sup -/ current fluctuations) and one with quiescent arc (less than or equal to 1% H/sup -/ current fluctuations). Lower arc magnetic field and higher H/sub 2/ gas flow allow switching from the noisy to the quiescent mode. The noisy modes yield up to 120 mA of 29-keV H/sup -/ beam; for 110 mA at 29 keV, the two-dimensional normalized rms emittance is 0.017 x 0.018 ..pi...cm.mrad. The quiescent mode yields 75 mA of 29-keV H/sup -/beam; for 67 mA at 24 keV, the emittance is 0.011 x 0.012 ..pi...cm.mrad.
Date:
January 1, 1985
Creator:
Smith, H. Vernon, Jr.; Allison, Paul & Sherman, Joseph D.
Object Type:
Article
System:
The UNT Digital Library
ABC's of pion charge exchange. [Absorption, blocking, and correlations]
Calculations of pion single charge exchange using the PWIA and DWIA are presented. Emphasis is given to the effects of absorbtion and blocking. A microscopic calculation of the 0/sup 0/ excitation and low energy angular distribution is in excellent agreement with the data. A fixed nucleon multiple scattering calculation of the pion double charge exchange reaction is presented. Various valence neutron wave functions are used, and the contributions of different spatial orientations of the last two neutrons to the reaction are examined. The DCX cross section is found to be very sensitive to the inclusion of correlations in the two-neutron wave function. Satisfactory agreement with DCX data on /sup 14/C can be obtained using a nucleonic picture of the nucleus.
Date:
1985~
Creator:
Gibbs, W.R.; Kaufmann, W.B. & Siegel, P.B.
Object Type:
Article
System:
The UNT Digital Library
Abernathy Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24,000
Date:
1985
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Abernathy Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24000
Date:
1985
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History