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90,896 Matching Results

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Results: 1 - 24 of 90,896 next
Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
Record of Technical Change No.2 for ``Corrective Action Investigation Plan for Corrective Action Unit 143: Area 25 Contaminated Waste Dumps, Nevada Test Site, Nevada'' (open access)

Record of Technical Change No.2 for ``Corrective Action Investigation Plan for Corrective Action Unit 143: Area 25 Contaminated Waste Dumps, Nevada Test Site, Nevada''

This Record of Technical Change provides updates to the technical information included in ``Corrective Action Investigation Plan for Corrective Action Unit 143: Area 25 Contaminated Waste Dumps, Nevada Test Site, Nevada.''
Date: November 19, 1999
Creator: /NV, USDOE
Object Type: Report
System: The UNT Digital Library
QUANTITATIVE ANALYSES OF THE SEVERITY OF ATTACK ON CREVICE CORROSION SURFACES (open access)

QUANTITATIVE ANALYSES OF THE SEVERITY OF ATTACK ON CREVICE CORROSION SURFACES

None
Date: December 19, 2005
Creator: /a, n
Object Type: Article
System: The UNT Digital Library
[Photograph 2012.201.TP0392.0875]

[Photograph 2012.201.TP0392.0875]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "As soon as remodeling work is completed, patients at the city detention hospital, now half hidden by oil derricks, will be moved to the old tubercular hospital west of the Union Soldier's home, Lincoln park."
Date: July 19, 1930
Creator: 3rd Party
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.TP0392.0896]

[Photograph 2012.201.TP0392.0896]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: July 19, 1962
Creator: 3rd Party
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.TP0392.0897]

[Photograph 2012.201.TP0392.0897]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: June 19, 1962
Creator: 3rd Party
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.TP0392.0898]

[Photograph 2012.201.TP0392.0898]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: June 19, 1962
Creator: 3rd Party
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.TP0392.0899]

[Photograph 2012.201.TP0392.0899]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: June 19, 1962
Creator: 3rd Party
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.TP0392.0900]

[Photograph 2012.201.TP0392.0900]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: June 19, 1962
Creator: 3rd Party
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.TP0392.0901]

[Photograph 2012.201.TP0392.0901]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: June 19, 1962
Creator: 3rd Party
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.TP0392.0902]

[Photograph 2012.201.TP0392.0902]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: June 19, 1962
Creator: 3rd Party
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.TP0392.0903]

[Photograph 2012.201.TP0392.0903]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: June 19, 1962
Creator: 3rd Party
Object Type: Photograph
System: The Gateway to Oklahoma History
[Photograph 2012.201.TP0392.0904]

[Photograph 2012.201.TP0392.0904]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: June 19, 1962
Creator: 3rd Party
Object Type: Photograph
System: The Gateway to Oklahoma History
CRYSTALLIZATION IN HIGH-LEVEL WASTE GLASSES U.S. DEPARTMENT OF ENERGY OFFICE OF RIVER PROTECTION WTP ENGINEERING DIVISION (open access)

CRYSTALLIZATION IN HIGH-LEVEL WASTE GLASSES U.S. DEPARTMENT OF ENERGY OFFICE OF RIVER PROTECTION WTP ENGINEERING DIVISION

Various circumstances influence crystallization in glassmaking, for example: (1) crystals nucleate and grow before the glass-forming melt occurs; (2) crystals grow or dissolve in flowing melt and during changing temperature; (3) crystals move under the influence of gravity; (4) crystals agglomerate and interact with gas bubbles; (5) high-level wastes (HLW) are mixtures of a large number of components in unusual proportions; (6) melter processing of HLW and the slow cooling of HLW glass in canisters provides an opportunity for a variety of crystalline forms to precipitate; (7) settling of crystals in a HLW glass melter may produce undesirable sludge at the melter bottom; and (8) crystallization of the glass product may increase, but also ruin chemical durability. The conclusions are: (1) crystal growth and dissolution typically proceed in a convective medium at changing temperature; (2) to represent crystallization or dissolution the kinetics must be expressed in the form of rate equations, such as dC/dt = f(C,T) and the temperature dependence of kinetic coefficients and equilibrium concentrations must be accounted for; and (3) non-equilibrium phenomena commonly occur - metastable crystallization, periodic distribution of crystals; and dendritic crystal growth.
Date: August 19, 2009
Creator: AA, KRUGER & PR, HRMA
Object Type: Article
System: The UNT Digital Library
IRON-PHOSPHATE GLASS FOR IMMOBILIZATION OF RADIOACTIVE TECHNETIUM (open access)

IRON-PHOSPHATE GLASS FOR IMMOBILIZATION OF RADIOACTIVE TECHNETIUM

Technetium-99 (Tc-99) can bring a serious environmental threat because of its high fission yield, long half-life, and high solubility and mobility in the ground water. The present work investigated the immobilization of Tc-99 (surrogated by Re) by heat-treating mixtures of an iron-phosphate glass with 1.5 to 6 wt.% KReO{sub 4} at {approx}1000 C. The Re retention in the glass was as high as {approx}1.2 wt. % while the loss of Re by evaporation during melting was {approx}50%. Re was uniformly distributed within the glass. The normalized Re release by the 7-day Product Consistency Test was {approx}0.39 g/m{sup 2}, comparable with that in phosphate-bonded ceramics and borosilicate glasses. These results suggest that iron-phosphate glass can provide a good matrix for immobilizing Tc-99.
Date: March 19, 2012
Creator: AA, KRUGER; PR, HRMA; K, XU; J, CHOI; W, UM & J, HEO
Object Type: Article
System: The UNT Digital Library
[Press Release: Madonna Film to Benefit AIDS Action Foundation] (open access)

[Press Release: Madonna Film to Benefit AIDS Action Foundation]

A press release from the AIDS Action Foundation promoting the premiere of Madonna's new film, the event and after party will benefit the AIDS Action Foundation.
Date: April 19, 1991
Creator: AIDS Action Foundation
Object Type: Text
System: The UNT Digital Library
Accident and Off Normal Response and Recovery from Multi Canister Overpack (MCO) Processing Events (open access)

Accident and Off Normal Response and Recovery from Multi Canister Overpack (MCO) Processing Events

In the process of removing spent nuclear fuel (SNF) from the K Basins through its subsequent packaging, drymg, transportation and storage steps, the SNF Project must be able to respond to all anticipated or foreseeable off-normal and accident events that may occur. Response procedures and recovery plans need to be in place, personnel training established and implemented to ensure the project will be capable of appropriate actions. To establish suitable project planning, these events must first be identified and analyzed for their expected impact to the project. This document assesses all off-normal and accident events for their potential cross-facility or Multi-Canister Overpack (MCO) process reversal impact. Table 1 provides the methodology for establishing the event planning level and these events are provided in Table 2 along with the general response and recovery planning. Accidents and off-normal events of the SNF Project have been evaluated and are identified in the appropriate facility Safety Analysis Report (SAR) or in the transportation Safety Analysis Report for Packaging (SARP). Hazards and accidents are summarized from these safety analyses and listed in separate tables for each facility and the transportation system in Appendix A, along with identified off-normal events. The tables identify the general response …
Date: September 19, 2000
Creator: ALDERMAN, C.A.
Object Type: Report
System: The UNT Digital Library
Spent Nuclear Fuel (SNF) Project Cask and MCO Helium Purge System Design Review Completion Report Project A.5 and A.6 (open access)

Spent Nuclear Fuel (SNF) Project Cask and MCO Helium Purge System Design Review Completion Report Project A.5 and A.6

This report documents the results of the design verification performed on the Cask and Multiple Canister Over-pack (MCO) Helium Purge System. The helium purge system is part of the Spent Nuclear Fuel (SNF) Project Cask Loadout System (CLS) at 100K area. The design verification employed the ''Independent Review Method'' in accordance with Administrative Procedure (AP) EN-6-027-01.
Date: April 19, 2000
Creator: ARD, K.E.
Object Type: Report
System: The UNT Digital Library
HANFORD TANK FARM CONTRACTOR SELF ASSESSMENT PROGRAM (open access)

HANFORD TANK FARM CONTRACTOR SELF ASSESSMENT PROGRAM

None
Date: November 19, 2003
Creator: AROMI, E.S. & ANDERSON, C.E.
Object Type: Report
System: The UNT Digital Library
STATUS OF THE DEVELOPMENT OF IN-TANK/AT-TANK SEPARATIONS TECHNOLOGIES FOR FOR HIGH-LEVEL WASTE PROCESSING FOR THE U.S. DEPARTMENT OF ENERGY (open access)

STATUS OF THE DEVELOPMENT OF IN-TANK/AT-TANK SEPARATIONS TECHNOLOGIES FOR FOR HIGH-LEVEL WASTE PROCESSING FOR THE U.S. DEPARTMENT OF ENERGY

Within the U.S. Department of Energy's (DOE) Office of Technology Innovation and Development, the Office of Waste Processing manages a research and development program related to the treatment and disposition of radioactive waste. At the Savannah River (South Carolina) and Hanford (Washington) Sites, approximately 90 million gallons of waste are distributed among 226 storage tanks (grouped or collocated in 'tank farms'). This waste may be considered to contain mixed and stratified high activity and low activity constituent waste liquids, salts and sludges that are collectively managed as high level waste (HLW). A large majority of these wastes and associated facilities are unique to the DOE, meaning many of the programs to treat these materials are 'first-of-a-kind' and unprecedented in scope and complexity. As a result, the technologies required to disposition these wastes must be developed from basic principles, or require significant re-engineering to adapt to DOE's specific applications. Of particular interest recently, the development of In-tank or At-Tank separation processes have the potential to treat waste with high returns on financial investment. The primary objective associated with In-Tank or At-Tank separation processes is to accelerate waste processing. Insertion of the technologies will (1) maximize available tank space to efficiently support …
Date: September 19, 2011
Creator: Aaron, G. & Wilmarth, B.
Object Type: Article
System: The UNT Digital Library
Search for W boson pair production in p{bar p} collisions at {radical}s = 1.8 TeV (open access)

Search for W boson pair production in p{bar p} collisions at {radical}s = 1.8 TeV

The results of a search for W boson pair production in p{bar p} collisions at {radical}s = 1.8 TeV with subsequent decay to dilepton (e{mu}, ee, and {mu}{mu}) channels are presented. One event is observed with an expected background of 0.56 {plus_minus} 0.13 events with an integrated luminosity of approximately 14 pb{sup {minus}1}. Assuming equal strengths for the WWZ and WW{gamma} gauge boson coupling parameters {kappa} and {lambda}, limits on the CP-conserving anomalous coupling constants are {minus}2.6 < {delta}{kappa} < 2.8 and {minus}2.1 {lambda} < 2.1 at the 95% confidence level.
Date: July 19, 1995
Creator: Abachi, S.
Object Type: Article
System: The UNT Digital Library
A PORTABLE BANDSAW FOR HOT CELL USE (open access)

A PORTABLE BANDSAW FOR HOT CELL USE

A commercial light-weight portable bandsaw was fitted with a grip to permit it to be maneuvered remotely in a hot cell by means of a General Mills manipulator The bandsaw was supported in various positions to make cuts on typical pieces. Photographs show the saw in operation. (auth)
Date: February 19, 1958
Creator: Abbatiello, A. A.
Object Type: Report
System: The UNT Digital Library
[Letter from J. P. Abbott to Mr. and Mrs. Daniel W. Kempner, November 19, 1954] (open access)

[Letter from J. P. Abbott to Mr. and Mrs. Daniel W. Kempner, November 19, 1954]

Letter from J. P. Abbott to Mr. and Mrs. Kempner thanking them for the invitation to the annual Kempner family barbecue and apologizing for being unable to attend.
Date: November 19, 1954
Creator: Abbott, J. P.
Object Type: Letter
System: The Portal to Texas History
A Change in the Optical Polarization Associated with a Gamma-Ray Flare in the Blazar 3C 279 (open access)

A Change in the Optical Polarization Associated with a Gamma-Ray Flare in the Blazar 3C 279

It is widely accepted that strong and variable radiation detected over all accessible energy bands in a number of active galaxies arises from a relativistic, Doppler-boosted jet pointing close to our line of sight. The size of the emitting zone and the location of this region relative to the central supermassive black hole are, however, poorly known, with estimates ranging from light-hours to a light-year or more. Here we report the coincidence of a gamma ({gamma})-ray flare with a dramatic change of optical polarization angle. This provides evidence for co-spatiality of optical and {gamma}-ray emission regions and indicates a highly ordered jet magnetic field. The results also require a non-axisymmetric structure of the emission zone, implying a curved trajectory for the emitting material within the jet, with the dissipation region located at a considerable distance from the black hole, at about 10{sup 5} gravitational radii.
Date: August 19, 2011
Creator: Abdo, A. A.
Object Type: Article
System: The UNT Digital Library
Fermi-LAT Discovery of GeV Gamma-ray Emission from the Young Supernova Remnant Cassiopeia A (open access)

Fermi-LAT Discovery of GeV Gamma-ray Emission from the Young Supernova Remnant Cassiopeia A

We report on the first detection of GeV high-energy gamma-ray emission from a young supernova remnant with the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope. These observations reveal a source with no discernible spatial extension detected at a significance level of 12.2{sigma} above 500 MeV at a location that is consistent with the position of the remnant of the supernova explosion that occurred around 1680 in the Cassiopeia constellation - Cassiopeia A. The gamma-ray flux and spectral shape of the source are consistent with a scenario in which the gamma-ray emission originates from relativistic particles accelerated in the shell of this remnant. The total content of cosmic rays (electrons and protons) accelerated in Cas A can be estimated as W{sub CR} {approx_equal} (1-4) x 10{sup 49} erg thanks to the well-known density in the remnant assuming that the observed gamma-ray originates in the SNR shell(s). The magnetic field in the radio-emitting plasma can be robustly constrained as B {ge} 0.1 mG, providing new evidence of the magnetic field amplification at the forward shock and the strong field in the shocked ejecta.
Date: August 19, 2011
Creator: Abdo, A. A.
Object Type: Article
System: The UNT Digital Library