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7,586 Matching Results
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[News release: Blues on 125th Street]
News release containing information for the play Blues on 125th Street. The release includes a synopsis of the production, as well as information about the production team and cast.
Date:
October 31, 1978
Creator:
Alpha Xi Omega
Object Type:
Text
System:
The UNT Digital Library
[Photograph 2012.201.B1253.0487]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Mrs. Edwin L. Snider."
Date:
October 3, 1974
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[News Script: Ling]
Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story.
Date:
October 22, 1971, 10:00 p.m.
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Script
System:
The UNT Digital Library
Alpha Particle Destabilization of the Toroidicity-Induced Alfven Eigenmodes
The high frequency, low mode number toroidicity-induced Alfven eigenmodes (TAE) are shown to be driven unstable by the circulating and/or trapped {alpha}-particles through the wave-particle resonances. Satisfying the resonance condition requires that the {alpha}-particle birth speed v{sub {alpha}} {ge} v{sub A}/2{vert bar}m-nq{vert bar}, where v{sub A} is the Alfven speed, m is the poloidal model number, and n is the toroidal mode number. To destabilize the TAE modes, the inverse Landau damping associated with the {alpha}-particle pressure gradient free energy must overcome the velocity space Landau damping due to both the {alpha}-particles and the core electrons and ions. The growth rate was studied analytically with a perturbative formula derived from the quadratic dispersion relation, and numerically with the aid of the NOVA-K code. Stability criteria in terms of the {alpha}-particle beta {beta}{sub {alpha}}, {alpha}-particle pressure gradient parameter ({omega}{sub {asterisk}}/{omega}{sub A}) ({omega}{sub {asterisk}} is the {alpha}-particle diamagnetic drift frequency), and (v{sub {alpha}}/v{sub A}) parameters will be presented for TFTR, CIT, and ITER tokamaks. The volume averaged {alpha}-particle beta threshold for TAE instability also depends sensitively on the core electron and ion temperature. Typically the volume averaged {alpha}-particle beta threshold is in the order of 10{sup {minus}4}. Typical growth rates of the …
Date:
October 1, 1990
Creator:
Cheng, C. Z.
Object Type:
Report
System:
The UNT Digital Library
FY13 LLNL OMEGA Experimental Programs
None
Date:
October 14, 2013
Creator:
Heeter, R. F.; Fournier, K. B.; Baker, K.; Brown, G. V.; Casey, D.; Celliers, P. et al.
Object Type:
Report
System:
The UNT Digital Library
Transitions of Dislocation Glide to Twinning and Shear Transformation in Shock-Deformed Tantalum
Recent TEM studies of deformation substructures developed in tantalum and tantalum-tungsten alloys shock-deformed at a peak pressure {approx}45 GPa have revealed the occurrence of shock-induced phase transformation [i.e., {alpha} (bcc) {yields} {omega} (hexagonal) transition] in addition to shock-induced deformation twinning. The volume fraction of twin and {omega} domains increases with increasing content of tungsten. A controversy arises since tantalum exhibits no clear equilibrium solid-state phase transformation under hydrostatic pressures up to 174 GPa. It is known that phase stability of a material system under different temperatures and pressures is determined by system free energy. That is, a structural phase that has the lowest free energy will be stable. For pressure-induced phase transformation under hydrostatic-pressure conditions, tantalum may undergo phase transition when the free energy of a competing phase {omega} becomes smaller than that of the parent phase {alpha} above a critical pressure (P{sub eq}), i.e., the equilibrium {alpha} {yields} {omega} transition occurs when the pressure increases above P{sub eq}. However, it is also known that material shocked under dynamic pressure can lead to a considerable increase in temperature, and the higher the applied pressure the higher the overheat temperature. This means a higher pressure is required to achieve an equivalent …
Date:
October 19, 2009
Creator:
Hsiung, L L; Campbell, G H & McNaney, J M
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B1000.0293]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Dr. Dorothy Parker, Joyce Henderson and Gladys Thomas, left, attend the recent 50th anniversary luncheon of the Beta Sigma Omega chapter of Alpha Kappa Alpha."
Date:
October 23, 1987
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Pamphlet: Dee Dee Warwick]
Program for a musical jazz performance featuring singer DeeDee Warwick and hosted by the Junior Black Academy of Arts and Letters on October 15-16, 1999, at the Muse Cafe Theatre.
Date:
October 1999
Creator:
Junior Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
New approaches to the preparation of P(alpha)MS beads as mandrels for NIF-scale target capsules
We report on a new method using heated density gradient columns for preparing spherical poly({alpha} - methylstyrene) (P{alpha}MS) bead mandrels for inertial confinement fusion spherical shell targets. Using 1,2 propane diol/glycerol mixtures, stable density gradient columns for supporting P{alpha}MS beads can be prepared at temperatures as high as 150 {degrees}C. At these temperatures plasticized commercial beads become fluid and spherical, however loss of the plasticizer and very low molecular weight components of the bead due to limited solubility in the column fluid leads to surface finish problems. We also present results on P{alpha}MS beads prepared in an aqueous bath batch mode. Using these techniques beads with maximum out-of-rounds less than 5 {micro}m have been produced.
Date:
October 20, 1998
Creator:
Buckley, S R; Cook, R C; Fearon, E & Letts, S A
Object Type:
Article
System:
The UNT Digital Library
[News Clip: TCU tricycle]
Video footage from the WBAP-TV station in Fort Worth, Texas, covering a news story about tricycle races at TCU's Parents Day. Women representing different sororities compete in the races.
Date:
October 27, 1956
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Final Report: Measurements of Core Conditions, Implosion Symmetry, and Anomaloes Acceleration Mechanisms on Omega through Charged Particle Spectroscopy, November 1, 1997 - December 31, 1998
This work concerns the first spectroscopic measurements of energetic charged particles on Omega. Individual line profiles include D-3He protons (14.7 MeV) and alphas (3.6 MeV), D-T alphas (3.5 MeV), D-D protons (3.0 MeV), and D-D tutons (1.0 MeV)
Date:
October 19, 1999
Creator:
Petrasso, R. & Li, C. K.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0252.0269]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "These employees at the Alpha and Omega Salon give customer Michelle Haven, center, some beauty and make-up tips for that Halloween look."
Date:
October 29, 1981
Creator:
Longstreath, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0297.0179]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Crocheting afghans is one of the hobbies of Mrs. James De Angelo, president of the University of Oklahoma chapter of the Alpha Tau Omega Mothers and Wives Club."
Date:
October 16, 1972
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1308.0330]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Gifts to be given away at the Alpha Chi Omega Alumnae benefit bridge- Luncheon Tuesday are wrapped by, left to right, Mrs. frank S. Thompson, Mrs. Derwin Jones and Mrs. jerry Cord Wilson, chairman."
Date:
October 22, 1968
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B1017.0790]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Surprise, Jay Jay," greets is America Saturday afternoon as 40 Alpha Chi Omega sorority sisters surprise Jane Jayroe in her hotel suite to celebrate her 20th birthday eight days early."
Date:
October 22, 1966
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Letter from Yetta G. Mitchell to Lewis Fulks]
Letter from Dr. Yetta G. Mitchell, Grand Director of Alpha Psi Omega Dramatic Fraternity, to Homecoming musical director Lewis Fulks at Abilene Christian College. In the letter, Mitchell congratulates Fulks on his 1972 production of "Fiddler on the Roof," and encourages him to send photographs to the theatre magazine "Playbill."
Date:
October 23, 1972
Creator:
Mitchell, Yetta G.
Object Type:
Letter
System:
The Portal to Texas History
[Photograph 2012.201.B0277.0515]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "OUTDOOR ACTIVITIES have a big attraction for Mrs. A. P. Hanes, 3104 Mockingbird Ln., president of the new Midwest City Alpha Chi Omega Alumnae Club."
Date:
October 26, 1963
Creator:
Lucas, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Safety analysis report for the TRUPACT-II shipping package (condensed version). Volume 2, Rev. 14
This appendix determines the effective G values for payload shipping categories of contact handled transuranic (CH-TRU) waste materials, based on the radiolytic G values for waste materials that are discussed in detail in Appendix 3.6.8 of the Safety Analysis Report for the TRUPACT-II Shipping Package. The effective G values take into account self-absorption of alpha decay energy inside particulate contamination and the fraction of energy absorbed by nongas-generating materials. As described in Appendix 3.6.8, an effective G value, G{sub eff}, is defined by: G{sub eff} - {Sigma}{sub M} (F{sub M} x G{sub M}) F{sub M}-fraction of energy absorbed by material maximum G value for a material where the sum is over all materials present inside a waste container. The G value itself is determined primarily by the chemical properties of the material and its temperature. The value of F is determined primarily by the size of the particles containing the radionuclides, the distribution of radioactivity on the various materials present inside the waste container, and the stopping distance of alpha particles in air, in the waste materials, or in the waste packaging materials.
Date:
October 1, 1994
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Waste-form development for conversion to portland cement at Los Alamos National Laboratory (LANL) Technical Area 55 (TA-55)
The process used at TA-55 to cement transuranic (TRU) waste has experienced several problems with the gypsum-based cement currently being used. Specifically, the waste form could not reliably pass the Waste Isolation Pilot Plant (WIPP) prohibition for free liquid and the Environmental Protection Agency (EPA)-Toxicity Characteristic Leaching Procedure (TCLP) standard for chromium. This report describes the project to develop a portland cement-based waste form that ensures compliance to these standards, as well as other performance standards consisting of homogeneous mixing, moderate hydration temperature, timely initial set, and structural durability. Testing was conducted using the two most common waste streams requiring cementation as of February 1994, lean residue (LR)- and oxalate filtrate (OX)-based evaporator bottoms (EV). A formulation with a pH of 10.3 to 12.1 and a minimum cement-to-liquid (C/L) ratio of 0.80 kg/l for OX-based EV and 0.94 kg/L for LR-based EV was found to pass the performance standards chosen for this project. The implementation of the portland process should result in a yearly cost savings for raw materials of approximately $27,000 over the gypsum process.
Date:
October 1, 1996
Creator:
Veazey, G. W.; Schake, A. R.; Shalek, P. D.; Romero, D. A. & Smith, C. A.
Object Type:
Report
System:
The UNT Digital Library
Systematic Study of Trace Radioactive Impurities in Candidate Construction Materials for EXO-200
The Enriched Xenon Observatory (EXO) will search for double beta decays of 136Xe. We report the results of a systematic study of trace concentrations of radioactive impurities in a wide range of raw materials and finished parts considered for use in the construction of EXO-200, the first stage of the EXO experimental program. Analysis techniques employed, and described here, include direct gamma counting, alpha counting, neutron activation analysis, and high-sensitivity mass spectrometry.
Date:
October 24, 2007
Creator:
Leonard, D. S.; Grinberg, P.; Weber, P.; Baussan, E.; Djurcic, Z.; Keefer, G. et al.
Object Type:
Article
System:
The UNT Digital Library
An update on measurements of helium-production reactions with a spallation neutron source
This report gives the status, updated since the last Research Coordination Meeting, of alpha-particle production cross sections, emission spectra and angular distributions which we are measuring at the spallation source of fast neutrons at the Los Alamos Meson Physics Facility (LAMPF). Detectors at angles of 30, 60, 90 and 135{degrees} are used to identify alpha particles, measure their energy spectra, and indicate the time-of-flight, and hence the energy, of the neutrons inducing the reaction. The useful neutron energy ranges from less than 1 MeV to approximately 50 MeV for the present experimental setup. Targets under study at present include C, N, 0, {sup 27}Al, Si, {sup 51}V, {sup 56}Fe, {sup 59}CO, {sup 58,60}Ni, {sup 89}Y and {sup 93}Nb. Data for {sup 59}Co have been re-analyzed. The results illustrate the capabilities of the approach, agreement with literature values, and comparisons with nuclear reaction model calculations.
Date:
October 1, 1995
Creator:
Haight, R. C.; Bateman, F. B. & Chadwick, M. B.
Object Type:
Report
System:
The UNT Digital Library
Idaho Nuclear Technology and Engineering Center Low-Activity Waste Process Technology Program FY-2000 Status Report
The Low-Activity Waste Process Technology Program anticipated that grouting will be used for disposal of low-level and transuranic wastes generated at the Idaho Nuclear Technology Engineering Center (INTEC). During fiscal year 2000, grout formulations were studied for transuranic waste derived from INTEC liquid sodium-bearing waste and for projected newly generated low-level liquid waste. Additional studies were completed using silica gel and other absorbents to solidify sodium-bearing wastes. A feasibility study and conceptual design were completed for the construction of a grout pilot plant for simulated wastes and demonstration facility for actual wastes.
Date:
October 31, 2000
Creator:
Herbst, A. K.; McCray, J. A.; Kirkham, R .J.; Pao, J.; Argyle, M. D.; Lauerhass, L. et al.
Object Type:
Report
System:
The UNT Digital Library
Fast ignitor coupling physics
The Fast Ignitor is an alternate approach to ICF in which short pulse lasers are used to initiate burn at the surface of the compressed DT fuel. The aim is to avoid the need for careful central focussing of final shocks, and possibly to lower substantially the energy requirements for ignition. Ultimately, both goals may prove crucial to Stockpile Stewardship. For success with the Fast Ignitor, the laser energy must be efficiently deposited into megavolt electrons, which must, in turn, couple to the background ions within an alpha particle range. To understand this coupling, we have used ANTHEM plasma simulation code to model the transport of hot electrons generated by an intense ({ge} 3 x 10{sup 18} W/cm{sup 2}) short pulse 1.06 {mu}m laser into plasma targets over a broad range of densities (0.35 to 10{sup 4} x n{sub crit}). Ponderomotive effects are included as a force on the cold background and hot emission electrons of the form, F{sub h,c} = -({omega}{sup 2}{sub Ph,c}/2{omega}{sup 2}){del}I, in which I is the laser intensity and {omega}{sub p}{sup 2} = 4{pi}e{sup 2}n/m{sub 0}{gamma} with m{sub 0} the electron rest mass.
Date:
October 1, 1997
Creator:
Mason, R.J. & Tabak, M.
Object Type:
Article
System:
The UNT Digital Library
Power Corrections in Charmless Nonleptonic B Decays: Annihilationis Factorizable and Real
We classify {Lambda}{sub QCD}/m{sub b} power corrections to nonleptonic B {yields} M{sub 1}M{sub 2} decays, where M{sub 1,2} are charmless non-isosinglet mesons. Using recent developments in soft-collinear effective theory, we prove that the leading contributions to annihilation amplitudes of order {alpha}{sub s}(m{sub b}) {Lambda}{sub QCD}/m{sub b} are real. The leading annihilation amplitudes depend on twist-2 and the twist-3 three parton distributions. A complex nonperturbative parameter from annihilation first appears at {Omega}[{alpha}{sub s}{sup 2}({radical}{Lambda}m{sub b}){Lambda}{sub QCD}/m{sub b}]. 'Chirally enhanced' contributions are also factorizable and real at lowest order. Thus, incalculable strong phases are suppressed in annihilation amplitudes, unless the {alpha}{sub s}({radical}{Lambda}m{sub b}) expansion breaks down. Modeling the distribution functions, we find that (11 {+-} 9)% and (15 {+-} 11)% of the absolute values of the measured {bar B}{sup 0} {yields} K{sup -}{pi}{sup +} and B{sup -} {yields} K{sup -}K{sup 0} penguin amplitudes come from annihilation. This is consistent with the expected size of power corrections.
Date:
October 10, 2006
Creator:
Arnesen, Christian M.; Ligeti, Zoltan; Rothstein, Ira Z. & Stewart, Iain W.
Object Type:
Article
System:
The UNT Digital Library