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[Photograph 2012.201.B1042.0143]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "A FINAL NOTATION and the check from Alpha Chi Omega Alumnae club, represented by Mrs. Emmit B. Hedrick, left, and Mrs. Daniel E. Webster, center, is ready for presentation to Mrs. O.C. Patten."
Date:
April 30, 1965
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Program for May Fete]
Program for North Texas State College's May Fete.
Date:
April 30, 1948
Creator:
North Texas State College
Object Type:
Text
System:
The UNT Digital Library
ALARA Review of the Spallation Neutron Source Accumulator Ring and Transfer Lines
The Spallation Neutron Source (SNS) is designed to meet the growing need for new tools that will deepen our understanding in materials science, life science, chemistry, fundamental and nuclear physics, earth and environmental sciences, and engineering sciences. The SNS is an accelerator-based neutron-scattering facility that when operational will produce an average beam power of 2 MW at a repetition rate of 60 Hz. The accelerator complex consists of the front-end systems, which will include an ion source; a 1-GeV full-energy linear accelerator; a single accumulator ring and its transfer lines; and a liquid mercury target. This report documents an as-low-as-reasonably-achievable (ALARA) review of the accumulator ring and transfer lines at their early design stage. An ALARA working group was formed and conducted a review of the SNS ring and transfer lines at the {approx}25% complete design stage to help ensure that ALARA principles are being incorporated into the design. The radiological aspects of the SNS design criteria were reviewed against regulatory requirements and ALARA principles. Proposed features and measures were then reviewed against the SNS design criteria. As part of the overall review, the working group reviewed the design manual; design drawings and process and instrumentation diagrams; the environment, safety, …
Date:
June 30, 2003
Creator:
Haire, M.J.
Object Type:
Report
System:
The UNT Digital Library
Fundamentals of ICF Hohlraums
On the Nova Laser at LLNL, we demonstrated many of the key elements required for assuring that the next laser, the National Ignition Facility (NIF) will drive an Inertial Confinement Fusion (ICF) target to ignition. The indirect drive (sometimes referred to as ''radiation drive'') approach converts laser light to x-rays inside a gold cylinder, which then acts as an x-ray ''oven'' (called a hohlraum) to drive the fusion capsule in its center. On Nova we've demonstrated good understanding of the temperatures reached in hohlraums and of the ways to control the uniformity with which the x-rays drive the spherical fusion capsules. In these lectures we will be reviewing the physics of these laser heated hohlraums, recent attempts at optimizing their performance, and then return to the ICF problem in particular to discuss scaling of ICF gain with scale size, and to compare indirect vs. direct drive gains. In ICF, spherical capsules containing Deuterium and Tritium (DT)--the heavy isotopes of hydrogen--are imploded, creating conditions of high temperature and density similar to those in the cores of stars required for initiating the fusion reaction. When DT fuses an alpha particle (the nucleus of a helium atom) and a neutron are created releasing …
Date:
September 30, 2005
Creator:
Rosen, M D
Object Type:
Article
System:
The UNT Digital Library
WRAP Module 1 sampling strategy and waste characterization alternatives study
The Waste Receiving and Processing Module 1 Facility is designed to examine, process, certify, and ship drums and boxes of solid wastes that have a surface dose equivalent of less than 200 mrem/h. These wastes will include low-level and transuranic wastes that are retrievably stored in the 200 Area burial grounds and facilities in addition to newly generated wastes. Certification of retrievably stored wastes processing in WRAP 1 is required to meet the waste acceptance criteria for onsite treatment and disposal of low-level waste and mixed low-level waste and the Waste Isolation Pilot Plant Waste Acceptance Criteria for the disposal of TRU waste. In addition, these wastes will need to be certified for packaging in TRUPACT-II shipping containers. Characterization of the retrievably stored waste is needed to support the certification process. Characterization data will be obtained from historical records, process knowledge, nondestructive examination nondestructive assay, visual inspection of the waste, head-gas sampling, and analysis of samples taken from the waste containers. Sample characterization refers to the method or methods that are used to test waste samples for specific analytes. The focus of this study is the sample characterization needed to accurately identify the hazardous and radioactive constituents present in the …
Date:
September 30, 1994
Creator:
Bergeson, C. L.
Object Type:
Report
System:
The UNT Digital Library
Novel Approaches to High-Efficiency III-V Nitride Heterostructure Emitters for Next-Generation Lighting Applications
We report research activities and technical progress on the development of high-efficiency long wavelength ({lambda} {approx} 540nm) green light emitting diodes which covers whole years of the three-year program 'Novel approaches to high-efficiency III-V nitride heterostructure emitters for next-generation lighting applications'. The research activities were focused on the development of p-type layer that has less/no detrimental thermal annealing effect on as well as excellent structural and electrical properties and the development of green LED active region that has superior luminescence quality for {lambda}{approx}540nm green LEDs. We have also studied (1) the thermal annealing effect on blue and green LED active region during the p-type layer growth; (2) the effect of growth parameters and structural factors for LED active region on electroluminescence properties; (3) the effect of substrates and orientation on electrical and electro-optical properties of green LEDs. As a progress highlight, we obtained green-LED-active-region-friendly In{sub 0.04}Ga{sub 0.96}N:Mg exhibiting low resistivity with higher hole concentration (p=2.0 x 10{sup 18} cm{sup -3} and a low resistivity of 0.5 {omega}-cm) and improved optical quality green LED active region emitting at {approx}540nm by electroluminescence. The LEDs with p-InGaN layer can act as a quantum-confined Stark effect mitigation layer by reducing strain in the QW. …
Date:
June 30, 2007
Creator:
Dupuis, Russell
Object Type:
Report
System:
The UNT Digital Library
Prospects for Investigating Unusual Nuclear Reaction Environments Using the National Ignition Facility
The standard capsule design1 and other laser plasma targets at the National Ignition Facility offer the possibility of generating and studying thermal rates for significant astrophysical fusion reactions such as {sup 3}He({sup 3}He,2p){alpha}, {sup 7}Be(p,{gamma})B, and {sup 15}N(p,{alpha}){sup 12}C. At present the ''S'' factors for these reactions are determined either by extrapolation from higher energy scattering data or by underground laboratory, low event rate experiments such as at LUNA on un-ionized atoms with concomitantly large screening corrections. The ability to directly generate astrophysical fusion reactions in thermonuclear plasmas will be complemented by new, ab initio, ''no frozen core'' detailed shell model predictions for such light ion reactions. In addition, the expected fluence of neutrons from the main D + T {yields} {alpha} burn reaction, is high enough to drive 10-20% of seeded spectator nuclei into excited states via (n,n') reactions. Furthermore, the {approx}2% ''minority'' D + D {yields} {sup 3}He + n can drive reactions pertinent to the r, s, and p process nucleosynthesis of heavy elements, including branches that pass through excited states with t > 10 ps, that can be studied using particle spectroscopy and radiochemistry. Additionally, for the first time, it will be possible to measure the …
Date:
September 30, 2003
Creator:
Libby, S. B.; Tabak, M.; Hoffman, R. D.; Stoyer, M. A.; Haan, S. W.; Hatchett, S. P. et al.
Object Type:
Article
System:
The UNT Digital Library
HYSPEC : A CRYSTAL TIME OF FLIGHT HYBRID SPECTROMETER FOR THE SPALLATION NEUTRON SOURCE.
This document lays out a proposal by the Instrument Development Team (IDT) composed of scientists from leading Universities and National Laboratories to design and build a conceptually new high-flux inelastic neutron spectrometer at the pulsed Spallation Neutron Source (SNS) at Oak Ridge. This instrument is intended to supply users of the SNS and scientific community, of which the IDT is an integral part, with a platform for ground-breaking investigations of the low-energy atomic-scale dynamical properties of crystalline solids. It is also planned that the proposed instrument will be equipped with a polarization analysis capability, therefore becoming the first polarized beam inelastic spectrometer in the SNS instrument suite, and the first successful polarized beam inelastic instrument at a pulsed spallation source worldwide. The proposed instrument is designed primarily for inelastic and elastic neutron spectroscopy of single crystals. In fact, the most informative neutron scattering studies of the dynamical properties of solids nearly always require single crystal samples, and they are almost invariably flux-limited. In addition, in measurements with polarization analysis the available flux is reduced through selection of the particular neutron polarization, which puts even more stringent limits on the feasibility of a particular experiment. To date, these investigations have mostly …
Date:
December 30, 2002
Creator:
SHAPIRO,S.M. & ZALIZNYAK,I.A.
Object Type:
Report
System:
The UNT Digital Library
New Anion-Exchange Resins for Improved Separations of Nuclear Materials
Improved separations of nuclear materials will have a significant impact upon a broad range of DOE activities. DOE-EM Focus Areas and Crosscutting Programs have identified improved methods for the extraction and recovery of radioactive metal ions from process, waste, and environmental waters as critical needs for the coming years. We propose to develop multifunctional anion-exchange resins that facilitate anion uptake by carefully controlling the structure of the anion receptor site. Our new ion-exchange resins interface the field of ion-specific chelating ligands with robust, commercial ion-exchange technology to provide materials which exhibit superior selectivity and kinetics of sorption and desorption. The following Focus Areas and Crosscutting Programs have described needs that would be favorably impacted by the new material: Efficient Separations and Processing - radionuclide removal from aqueous phases; Plutonium - Pu, Am or total alpha removal to meet regulatory requirement s before discharge to the environment; Plumes - U and Tc in groundwater, U, Pu, Am, and Tc in soils; Mixed Waste - radionuclide partitioning; High-Level Tank Waste - actinide and Tc removal from supernatants and/or sludges. The basic scientific issues which need to be addressed are actinide complex speciation along with modeling of metal complex/functional site interactions in order …
Date:
April 30, 2001
Creator:
Bartsch, Richard A. & Barr, Mary E.
Object Type:
Report
System:
The UNT Digital Library
The Oklahoma Daily (Norman, Okla.), Vol. 60, No. 6, Ed. 1 Thursday, August 30, 1973
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
August 30, 1973
Creator:
Vitt, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Daily (Norman, Okla.), Vol. 17, No. 98, Ed. 1 Tuesday, January 30, 1923
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes local and campus news along with advertising.
Date:
January 30, 1923
Creator:
Monroney, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Lamar Tech Redbird (Beaumont, Tex.), Vol. 13, No. 22, Ed. 1 Friday, March 30, 1962
Weekly newspaper from Lamar State College of Technology in Beaumont, Texas that includes local and campus news along with advertising.
Date:
March 30, 1962
Creator:
Stark, Molly & Hair, Floyd
Object Type:
Newspaper
System:
The Portal to Texas History
The Redbird (Beaumont, Tex.), Vol. 9, No. 7, Ed. 1 Friday, October 30, 1959
Weekly newspaper from Lamar State College of Technology in Beaumont, Texas that includes local and campus news along with advertising.
Date:
October 30, 1959
Creator:
Webb, Joanne
Object Type:
Newspaper
System:
The Portal to Texas History
The Redbird (Beaumont, Tex.), Vol. 15, No. 22, Ed. 1 Friday, April 30, 1965
Weekly newspaper from Lamar State College of Technology in Beaumont, Texas that includes local and campus news along with advertising.
Date:
April 30, 1965
Creator:
Oglethorpe, Bonnie
Object Type:
Newspaper
System:
The Portal to Texas History
The Redbird (Beaumont, Tex.), Vol. 13, No. 10, Ed. 1 Friday, November 30, 1962
Weekly newspaper from Lamar State College of Technology in Beaumont, Texas that includes local and campus news along with advertising.
Date:
November 30, 1962
Creator:
du Perier, Mary Anne
Object Type:
Newspaper
System:
The Portal to Texas History
The Redbird (Beaumont, Tex.), Vol. 21, No. 8, Ed. 1 Friday, October 30, 1970
Weekly newspaper from Lamar State College of Technology in Beaumont, Texas that includes local and campus news along with advertising.
Date:
October 30, 1970
Creator:
Ramsey, Mike
Object Type:
Newspaper
System:
The Portal to Texas History
The University Press (Beaumont, Tex.), Vol. 26, No. 24, Ed. 1 Friday, April 30, 1976
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local and campus news along with advertising.
Date:
April 30, 1976
Creator:
Daniels, Cheryl
Object Type:
Newspaper
System:
The Portal to Texas History
The Oklahoma Daily (Norman, Okla.), Vol. 99, No. 52, Ed. 1 Wednesday, October 30, 2013
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 30, 2013
Creator:
Margerum, Kyle
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Lone Star Lutheran (Seguin, Tex.), Vol. 54, No. 1, Ed. 1 Monday, July 30, 1973
Student newspaper from Texas Lutheran College in Seguin, Texas that includes news of interest to students and staff along with advertising.
Date:
July 30, 1973
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Rambler (Fort Worth, Tex.), Vol. 84, No. 1, Ed. 1 Wednesday, August 30, 2000
Weekly student newspaper from Texas Wesleyan University in Fort Worth, Texas that includes campus and local news along with advertising.
Date:
August 30, 2000
Creator:
Wright, Shelly
Object Type:
Newspaper
System:
The Portal to Texas History
The Oklahoma Daily (Norman, Okla.), Vol. 9, No. 44, Ed. 1 Tuesday, October 30, 1923
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes local and campus news along with advertising.
Date:
October 30, 1923
Creator:
Webb, Guy P.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Daily (Norman, Okla.), Vol. 98, No. 88, Ed. 1 Wednesday, January 30, 2013
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
January 30, 2013
Creator:
Stanfield, Mary
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
University Press (Beaumont, Tex.), Vol. 69, No. 9, Ed. 1 Wednesday, September 30, 1992
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
September 30, 1992
Creator:
Bankston, Mark
Object Type:
Newspaper
System:
The Portal to Texas History
The Yellow Jacket (Brownwood, Tex.), Vol. 104, No. 7, Ed. 1 Thursday, January 30, 2014
Weekly student newspaper from Howard Payne University in Brownwood, Texas that includes local, state and campus news along with advertising.
Date:
January 30, 2014
Creator:
Howard Payne University
Object Type:
Newspaper
System:
The Portal to Texas History