Partner
UNT Libraries Government Documents Department
494
UNT Libraries Special Collections
89
Oklahoma Historical Society
42
National Museum of the Pacific War/Admiral Nimitz Foundation
20
UNT Music Library
15
UNT Libraries
14
Sterling Municipal Library
9
Carl Albert Congressional Research and Studies Center
8
Kerr County Historical Commission
4
Patrick Heath Public Library
4
54 More
Collection
Office of Scientific & Technical Information Technical Reports
368
Texas Digital Newspaper Program
112
Congressional Research Service Reports
70
The Black Academy of Arts and Letters Records
62
Oklahoma Digital Newspaper Program
52
Tocker Foundation Grant
50
Government Accountability Office Reports
46
National Museum of the Pacific War Oral History Collection
20
National Museum of the Pacific War Digital Archive
20
College of Music Recordings
15
95 More
Degree Department
Degree Discipline
Degree Level
Country
Decade
Month
Day
789 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
789
next
21-PWR Waste Package Side and End Impacts
The objective of this calculation is to determine the structural response of a 21-Pressurized Water Reactor (PWR) spent nuclear fuel waste package impacting an unyielding surface. A range of initial velocities and initial angles between the waste package and the unyielding surface is studied. The scope of this calculation is limited to estimating the area of the outer shell (OS) where the residual stress exceeds a given limit (hereafter ''damaged area''). The stress limit is defined as a fraction of the yield strength of the OS material, Alloy 22 (SB-575 N06022), at the appropriate temperature. The design of the 21-PWR waste package used in this calculation is that defined in Reference 8. However, a value of 4 mm was used for the gap between the inner shell and the OS, and the thickness of the OS was reduced by 2 mm. The sketch in Attachment I provides additional information not included in Reference 8. All obtained results are valid for this design only. This calculation is associated with the waste package design and was performed by the Specialty Analyses and Waste Package Design Section. The waste package (i.e. uncanistered spent nuclear fuel disposal container) is classified as Quality Level 1.
Date:
February 27, 2003
Creator:
Delabrosse, V.
Object Type:
Report
System:
The UNT Digital Library
40 YEARS OF EXPERIENCE WITH LIQUID-LIQUID EXTRACTION EQUIPMENT IN THE NUCLEAR INDUSTRY
Three types of liquid-liquid extraction equipment are used in industrial reprocessing plants. Each is described below, with a special focus on pulsed columns and centrifugal extractors, which have been the subject of an extensive R&D program by the French Atomic Energy Commission (CEA). Various models have been developed to simulate equipment behavior and flowsheets. The excellent results obtained during industrial operation of the UP3 and UP2-800 plants in La Hague have confirmed the validity of the choices made during the design phases and pave the way for future improvement of the reprocessing process, from a technical and a financial standpoint.
Date:
February 27, 2003
Creator:
Drain, F.; Vinoche, R. & Duhamet, J.
Object Type:
Article
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 33, No. 18, Ed. 1 Friday, February 27, 2004
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 27, 2004
Creator:
Pound, Jaylynn Christian
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 38, No. 19, Ed. 1 Friday, February 27, 2009
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 27, 2009
Creator:
Price, Racheal
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
2006 Computation Directorate Annual Report
None
Date:
February 27, 2007
Creator:
Zosel, M
Object Type:
Report
System:
The UNT Digital Library
21st Century Community Learning Centers in P.L. 107-110: Background and Funding
Most Elementary and Secondary Education Act (ESEA) programs, including the 21st Century Community Learning Centers (21st CCLC) program, expired at the end of FY2000.1 Included in the No Child Left Behind Act is the reauthorization of the 21st CCLC, with, a new location (Title IV, Part B, 21st Century Schools), and several substantive changes. On December 13 and 18, 2001, respectively, the House and Senate adopted the conference version of H.R. 1, The No Child Left Behind Act. The President signed H.R. 1 into law (P.L. 107-110) on January 8, 2002. This report summarizes the major provisions of the reauthorized 21st CCLC program. The reauthorized program is structured as a formula grant program to states, in response to concerns that a program as large as the 21st CCLC could no longer be equitably administered as a competitive grant program. In addition, the reauthorized program formally endorses a focus for the 21st CCLC on after-school hours activities for children and youth.
Date:
February 27, 2003
Creator:
McCallion, Gail
Object Type:
Report
System:
The UNT Digital Library
80th Texas Legislature, Regular Session, Senate Concurrent Resolution 24
Concurrent resolution introduced by the Texas Senate and House of Representatives granting the legislature permission to adjourn for more than three days during the period beginning on Wednesday, February 21, 2007, and ending on Monday, February 26, 2007.
Date:
February 27, 2007
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
Accelerated Tank Closure Demonstrations at the Hanford Site
Among the highest priorities for action under the Hanford Federal Facility Agreement and Consent Order (Ecology et al. 1989a), hereafter referred to as the Tri-Party Agreement, is the retrieval, treatment and disposal of Hanford Site tank waste. Tank waste is recognized as one of the primary threats to the Columbia River and one of the most complex technical challenges. Progress has been made in resolving safety issues, characterizing tank waste and past tank leaks, enhancing double-shell tank waste transfer and operations systems, retrieving single-shell tank waste, deploying waste treatment facilities, and planning for the disposal of immobilized waste product. However, limited progress has been made in developing technologies and providing a sound technical basis for tank system closure. To address this limitation the Accelerated Tank Closure Demonstration Project was created to develop information through technology demonstrations in support of waste retrieval and closure decisions. To complete its mission the Accelerated Tank Closure Demonstration Project has adopted performance objectives that include: Protecting human health and the environment; Minimizing/eliminating potential waste releases to the soil and groundwater; Preventing water infiltration into the tank; Maintaining accessibility of surrounding tanks for future closure; Maintaining tank structural integrity; Complying with applicable waste retrieval, disposal, and …
Date:
February 27, 2003
Creator:
Sams, Terry L.; Riess, Mark J.; Cammann, Jerry W.; Lee, Timothy A. & Nichols, David
Object Type:
Article
System:
The UNT Digital Library
ACCELERATING CLOSURE AT DOE SITES WITH EM'S SCIENCE AND TECHNOLOGY PROGRAM
Technical support is important for all U.S. Department of Energy (DOE) facilities facing difficult technical issues, aggressive remediation schedules, and tight budgets. It is especially vital for closure sites, which typically are smaller and have fewer resources available to apply to remediation activities. In many cases, closure sites and other small sites no longer have staff with the expertise required to overcome technical barriers on their own. As closure deadlines approach, special technical expertise is needed to identify, evaluate, and implement new and innovative approaches that will result in significant cost and schedule improvement for the waste disposition pathway. Site ''problem holders'' must have access to world-class scientific and engineering expertise from DOE national laboratories and research facilities, private industry, and universities to address immediate critical problems. In order to have confidence in the feasibility and results of innovative approaches, site contractors need to have the benefit of the valuable experiences of technicians who have faced similar problems and found solutions. The DOE Environmental Management (EM) Science and Technology (S&T) program recognizes the need of the closure sites to solve problems aggressively and is highly responsive to this need. Technical support from the S&T program can take many forms, such …
Date:
February 27, 2003
Creator:
Walker, J. S.; Toussaint, Craig R., (info: Ph.D.) & Gardner, E. J.
Object Type:
Article
System:
The UNT Digital Library
Access to Arts Education: Inclusion of Additional Questions in Education's Planned Research Would Help Explain Why Instruction Time Has Decreased for Some Students
A letter report issued by the Government Accountability Office with an abstract that begins "Under the No Child Left Behind Act (NCLBA), districts and schools must demonstrate adequate yearly progress (AYP) for all students. Because schools may spend more time improving students' academic skills to meet NCLBA's requirements, some are concerned that arts education might be cut back. To determine how, if at all, student access to arts education has changed since NCLBA, the Congress asked: (1) has the amount of instruction time for arts education changed and, if so, have certain groups been more affected than others, (2) to what extent have state education agencies' requirements and funding for arts education changed since NCLBA, (3) what are school officials in selected districts doing to provide arts education since NCLBA and what challenges do they face in doing so, and (4) what is known about the effect of arts education in improving student outcomes? GAO analyzed data from the U.S. Department of Education (Education), surveyed 50 state arts officials, interviewed officials in 8 school districts and 19 schools, and reviewed existing research."
Date:
February 27, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Accretion Column Structure of Magnetic Cataclysmic Variables from X-ray Spectroscopy
Using Chandra HETG data we present light curves for individual spectral lines of Mg XI and Mg XII for EX Hydrae, an intermediate-polar type cataclysmic variable. The Mg XI light curve, folded on the white dwarf spin period, shows two spikes that are not seen in the Mg XII or broad-band light curves. Occultation of the accretion column by the body of the white dwarf would produce such spikes for an angle between the rotation axis and the accretion columns of {alpha} = 18{sup o} and a height of the Mg XI emission above the white dwarf surface of {approx}< 0.0004 white dwarf radii or {approx}< 4 km. The absence of spikes in the Mg XII and broad-band light curves could then be explained if the bulk of its emission forms at much larger height, > 0.004 white dwarf radii or > 40 km, above the white dwarf surface. The technique described in this letter demonstrates that high signal-to-noise ratio and high spectral resolution X-ray spectra can be used to map the temperature and density structure of accretion flows in magnetic cataclysmic variables. The Mg XI and Mg XII light curves are not consistent with the temperature and density structure …
Date:
February 27, 2006
Creator:
Hoogerwerf, R; Brickhouse, N S & Mauche, C W
Object Type:
Article
System:
The UNT Digital Library
ADDRESSING POLLUTION PREVENTION ISSUES IN THE DESIGN OF A NEW NUCLEAR RESEARCH FACILITY
The Chemistry and Metallurgical Research (CMR) Facility was designed in 1949 and built in 1952 at Los Alamos National Laboratory (LANL) to support analytical chemistry, metallurgical studies, and actinide research and development on samples of plutonium and other nuclear materials for the Atomic Energy Commission's nuclear weapons program. These primary programmatic uses of the CMR Facility have not changed significantly since it was constructed. In 1998, a seismic fault was found to the west of the CMR Facility and projected to extend beneath two wings of the building. As part of the overall Risk Management Strategy for the CMR Facility, the Department of Energy (DOE) proposed to replace it by 2010 with what is called the CMR Facility Replacement (CMRR). In an effort to make this proposed new nuclear research facility environmentally sustainable, several pollution prevention/waste minimization initiatives are being reviewed for potential incorporation during the design phase. A two-phase approach is being adopted; the facility is being designed in a manner that integrates pollution prevention efforts, and programmatic activities are being tailored to minimize waste. Processes and procedures that reduce waste generation compared to current, prevalent processes and procedures are identified. Some of these ''best practices'' include the following: …
Date:
February 27, 2003
Creator:
Cournoyer, Michael E.; Corpion, Juan & Nelson, Timothy O.
Object Type:
Article
System:
The UNT Digital Library
AN ADVANCED LIQUID WASTE TREATMENT SYSTEM USING A HIGH EFFICIENCY SOLIDIFICATION TECHNIQUE
An advanced system using High Efficiency Solidification Technology (HEST) was developed to treat PWR liquid waste and the first unit is operating in Taiwan (1) and a detailed design is being carried out for the second unit in Japan. The HEST system consists of two subsystems, a super-concentration subsystem and a solidification subsystem. The super-concentration subsystem is able to concentrate the waste solution to a total boron content as high as 130,000 ppm prior to solidification. The higher boron content will result in greater volume reduction efficiency of solidification. The solidification subsystem consists of an in-drum mixing and a conveyor units. Representative features of this advanced system are as follows. (1) Simple system: The system consists of the super-concentration and cement solidification subsystems; it is as simple as the conventional cement solidification system. (2) High volume reduction efficiency: The number of solidified waste drums is about 1/2.5 that of bitumen solidification. (3) Stable Package: Essentially no organic material is used, and the final package will be stable under the final disposal conditions. (4) Zero secondary waste: Washing water used in the in-drum mixer is recycled. This paper describes the outline of HEST technology, treatment system and pilot plant tests.
Date:
February 27, 2003
Creator:
Kikuchi, M.; Hirayama, S.; Noshita, K.; Yatou, Y. & Huang, C. T.
Object Type:
Article
System:
The UNT Digital Library
AN ADVANCED TOOL FOR APPLIED INTEGRATED SAFETY MANAGEMENT
WESKEM, LLC's Environmental, Safety and Health (ES&H) Department had previously assessed that a lack of consistency, poor communication and using antiquated communication tools could result in varying operating practices, as well as a failure to capture and disseminate appropriate Integrated Safety Management (ISM) information. To address these issues, the ES&H Department established an Activity Hazard Review (AHR)/Activity Hazard Analysis (AHA) process for systematically identifying, assessing, and controlling hazards associated with project work activities during work planning and execution. Depending on the scope of a project, information from field walkdowns and table-top meetings are collected on an AHR form. The AHA then documents the potential failure and consequence scenarios for a particular hazard. Also, the AHA recommends whether the type of mitigation appears appropriate or whether additional controls should be implemented. Since the application is web based, the information is captured into a single system and organized according to the >200 work activities already recorded in the database. Using the streamlined AHA method improved cycle time from over four hours to an average of one hour, allowing more time to analyze unique hazards and develop appropriate controls. Also, the enhanced configuration control created a readily available AHA library to research and …
Date:
February 27, 2003
Creator:
Potts, T. Todd; Hylko, James M. & Douglas, Terence A.
Object Type:
Article
System:
The UNT Digital Library
Advanced Turbo-Charging Research and Development
The objective of this project is to conduct analysis, design, procurement and test of a high pressure ratio, wide flow range, and high EGR system with two stages of turbocharging. The system needs to meet the stringent 2010MY emissions regulations at 20% + better fuel economy than its nearest gasoline competitor while allowing equivalent vehicle launch characteristics and higher torque capability than its nearest gasoline competitor. The system will also need to meet light truck/ SUV life requirements, which will require validation or development of components traditionally used only in passenger car applications. The conceived system is termed 'seriessequential turbocharger' because the turbocharger system operates in series at appropriate times and also sequentially when required. This is accomplished using intelligent design and control of flow passages and valves. Components of the seriessequential system will also be applicable to parallel-sequential systems which are also expected to be in use for future light truck/SUV applications.
Date:
February 27, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advances in Yucca Mountain Design
Since site designation of the Yucca Mountain Project by the President, the U.S. Department of Energy (DOE) has begun the transition from the site characterization phase of the project to preparation of the license application. As part of this transition, an increased focus has been applied to the repository design. Several evolution studies were performed to evaluate the repository design and to determine if improvements in the design were possible considering advances in the technology for handling and packaging nuclear materials. The studies' main focus was to reduce and/or eliminate uncertainties in both the pre-closure and post-closure performance of the repository and to optimize operations. The scope and recommendations from these studies are the subjects of this paper and include the following topics: (1) a more phased approach for the surface facility that utilize handling and packaging of the commercial spent nuclear fuel in a dry environment rather than in pools as was presented in the site recommendation; (2) slight adjustment of the repository footprint and a phased approach for construction and emplacement of the repository subsurface; and (3) simplification of the construction, fabrication and installation of the waste package and drip shield.
Date:
February 27, 2003
Creator:
Harrington, P. G.; Gardiner, J. T.; Russell, P. R. Z.; Lachman, K. D.; McDaniel, P. W.; Boutin, R. J. et al.
Object Type:
Article
System:
The UNT Digital Library
Advantages and Disadvantages to Operating an On-Site Laboratory at the Sandia National Laboratories Chemical Waste Landfill
During the excavation of the Sandia National Laboratories, New Mexico (SNL/NM) Chemical Waste Landfill (CWL), operations were realized by the presence of URS' (formerly known as United Research Services) On-site Mobile Laboratory (OSML) and the close proximity of the SNL/NM Environmental Restoration Chemical Laboratory (ERCL). The laboratory was located adjacent to the landfill in order to provide soil characterization, health and safety support, and waste management data. Although the cost of maintaining and operating an analytical laboratory can be higher than off-site analysis, there are many benefits to providing on site analytical services. This paper describes the synergies between the laboratory, as well as the advantages and disadvantages to having a laboratory on-site during the excavation of SNL/NM CWL.
Date:
February 27, 2003
Creator:
Young, S. G. & Creech, M. N.
Object Type:
Article
System:
The UNT Digital Library
Advantages, disadvantages, and lessons learned from multi-reactor decommissioning projects
This paper discusses the Reactor Interim Safe Storage (ISS) Project within the decommissioning projects at the Hanford Site and reviews the lessons learned from performing four large reactor decommissioning projects sequentially. The advantages and disadvantages of this multi-reactor decommissioning project are highlighted.
Date:
February 27, 2003
Creator:
Morton, M. R.; Nielson, R. R. & Trevino, R. A.
Object Type:
Article
System:
The UNT Digital Library
ADVANTAGES OF INVESTIGATING CHEMICAL AND RADIOLOGICAL CONSTITUENTS SIMULTANEOUSLY IN SOIL AND GROUNDWATER
At some sites both chemical and radiological investigation of soil and groundwater is required for overall site characterization. While the planning and execution of investigation activities is usually completed to fulfill regulatory (i.e., United States Environmental Protection Agency or United States Nuclear Regulatory Commission) requirements, coordination of chemical and radiological investigation programs may provide an opportunity for reducing the duration of investigation activities and reducing overall project costs. There are several similarities in the chemical and radiological investigation processes that one can take advantage of in program design and execution to efficiently plan and execute chemical and radiological investigations simultaneously. At sites where both chemical and radiological constituents are being investigated in soil and groundwater, various steps can be taken during the investigation processes to combine chemical and radiological investigation and characterization activities. With proper planning, investigating chemical and radiological constituents simultaneously in soil and groundwater can reduce the project schedule and provide cost savings for overall characterization of the site.
Date:
February 27, 2003
Creator:
Downey, H.; Shephard, E. & Walter, N.
Object Type:
Article
System:
The UNT Digital Library
AeSPoe HARD ROCK LABORATORY
Aespoe Hard Rock Laboratory (AEHRL) has been constructed in virgin bedrock as part of the development of a deep geological repository for spent nuclear fuel in Sweden, the role being to provide input to the performance assessment, to test engineered barrier systems and to develop and refine full scale methods and machines for construction and operation of the real repository. The AEHRL extends down to 460 m depth with access via both ramp and shaft. Work in the laboratory has been separated into 4 different stage goals: (1) Verification of site investigation methods. (2) Development of detailed investigation methodology. (3) Testing of models for description of the barrier function of the host rock. (4) Demonstration of technology for and function of important parts of the repository system Stage goals 1 and 2 were in focus during the period 1986-95 and are now completed. Stage goal 1 concerns investigations carried out from ground surface and stage goal 2 investigations carried out underground, in this case during excavation of the ramp. The present work is focused on the two operative stage goals 3 and 4. The activities on barrier function of the host rock comprises primarily in-situ tests with tracer migration in …
Date:
February 27, 2003
Creator:
Svemar, C; Pettersson, S. & Hedman, T.
Object Type:
Article
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 127, No. 38, Ed. 1 Thursday, February 27, 2003
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
February 27, 2003
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
Alpha Waste Minimization in Terms of Volume and Radioactivity at Cogema's Melox and la Hague Plants
This paper describes the management of alpha waste that cannot be stored in surface repositories under current French regulations. The aim of the paper is to provide an overview of COGEMA's Integrated Waste Management Strategy. The topics discussed include primary waste minimization, from facility design to operating feedback; primary waste management by the plant operator, including waste characterization; waste treatment options that led to building waste treatment industrial facilities for plutonium decontamination, compaction and cement solidification; and optimization of industrial tools, which is strongly influenced by safety and financial considerations.
Date:
February 27, 2003
Creator:
Arslan, M.; Dumont, J. C.; Londres, V. & Poncelet, F. J.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 100, No. 293, Ed. 1 Sunday, February 27, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 27, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 101, No. 299, Ed. 1 Tuesday, February 27, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 27, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History