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Interim Report on the Development of an Air Pulser for Pulse Column Application
The Idaho Chemical Processing Plant for several years has been studying various pulsing systems, used in extraction columns for processing irradiated nucIear fuel elements, in an effort to eliminate the mechanical difficuittes in present pulsing systems. An air puising system has been demonstrated, and a discussion is given of experimental work, pulser design, and plant operational experience with this system. It is concluded, from work completed thus far that air puising of extraction columns is a considerable improvement over other systems. (auth)
Date:
September 22, 1961
Creator:
Weech, M. E.; P'Pool, R. S. & MacQueen, D. K.
Object Type:
Report
System:
The UNT Digital Library
Injection septum magnets for the Loma Linda medical accelerator
The injection beamline runs over the last magnet before a long straight section and is then displaced downward 55.88 cm to the accelerator beamline. The displacement is magnetic and the final deflection onto the synchrotron orbit is by an electric kicker. The first component, the reverse septum magnet, bends the injection beam 25)degree) downward. This is followed by the injection septum (20)degree) bend upward) and the final injection kicker (5)degree) bend upward). The septum magnets produce a peak field of 3.4 K gauss at a current of 28,000 amperes within a 0.1 msec long pulse. The electric kicker produces a field of 7.3 KV/cm with a pulse length of 0.0011 msec. The septum magnets are similar to each other in construction with a bending radium of 72.7 cm. The curvature is required to increase the effective aperture. Each magnet has a single-turn copper coil bonded to a stainless steel plate for reinforcement. This eliminates insulating material, which could be subject to radiation damage, at the septum. The stainless steel plate is welded to the magnet laminations. The current is confined to the septum by the insulation between the laminations, which are a standard core material. The total septum thickness with …
Date:
September 22, 1987
Creator:
Satti, J.A.
Object Type:
Article
System:
The UNT Digital Library
Background field coils for the High Field Test Facility
The High Field Test Facility (HFTF), presently under construction at LLNL, is a set of superconducting coils that will be used to test 1-m-o.d. coils of prototype conductors for fusion magnets in fields up to 12 T. The facility consists of two concentric sets of coils; the outer set is a stack of Nb-Ti solenoids, and the inner set is a pair of solenoids made of cryogenically-stabilized, multifilamentary Nb/sub 3/Sn superconductor, developed for use in mirror-fusion magnets. The HFTF system is designed to be parted along the midplane to allow high-field conductors, under development for Tokamak fusion machines, to be inserted and tested. The background field coils were wound pancake-fashion, with cold-welded joints at both the inner and outer diameters. Turn-to-turn insulation was fabricated at LLNL from epoxy-fiberglass strip. The coils were assembled and tested in our 2-m-diam cryostat to verify their operation.
Date:
September 22, 1980
Creator:
Zbasnik, J. P.; Cornish, D. N.; Scanlan, R. M.; Jewell, A. M.; Leber, R. L.; Rosdahl, A. R. et al.
Object Type:
Article
System:
The UNT Digital Library
Stability of space-charge neutralized beams
Consideration is given to the stability of negative ion beams which are neutralized through ionization of a background gas. Two types of instabilities are examined. First, beam-plasma instabilities are analyzed with the dispersion relation showing that they are unimportant if the beam velocity is less than the electron thermal velocity. Second, results of a computer simulation on the flow of a cylindrical beam and the resulting background plasma show that when the background neutral gas density is less than or approximately equal to a critical density as instability occurs. This critical density is the density that would be needed to space-charge neutralize the beam if the positive ions were not retarded by the beam. An approximate dispersion relation indicates that the nature of the instability is a transverse positive-ion acoustic wave which couples to the beam.
Date:
September 22, 1977
Creator:
Turnbull, R. J. & Hooper, E. B. Jr.
Object Type:
Article
System:
The UNT Digital Library
Dispersive effects of transverse magnet displacements in rolled arc achromats
The effect of transverse displacements of combined function magnets is investigated where the disperion in not matched due to roll. This dispersion function is perturbed by displacement of combined function magnets either singly or coherently. In the latter case the effect of a systematic (or DC) offset of magnets is examined. This type of error can occur due to systematics in the placement or the readout of Beam Position Monitors or equivalently by correcting the orbit of a beam of the wrong momentum with respect to the Arc magnet excitation. 5 refs., 18 figs.
Date:
September 22, 1986
Creator:
Fieguth, T.; Kheifets, S. & Murray, J. J.
Object Type:
Report
System:
The UNT Digital Library
Proposal to utilize fusion reactor energy sources for chemical process applications
We propose to study the utilization of high-temperature (approximately 2000-2500K) process heat from fusion reactors for large-scale chemical process applications. Of particular interest is the decomposition reaction, CO/sub 2/ ..-->.. CO + /sup 1///sub 2/O/sub 2/, which at 2500K should yield approximately 60 percent conversion to CO if O/sub 2/ is partially removed through an oxide membrane. Hydrogen can be derived from CO at lower temperatures by reacting CO with steam, and C can also be derived from CO by a disproportionation into C and CO/sub 2/ at approximately 1000K. These chemicals, CO, H/sub 2/, and C, form the basis for a multitude of non-electrical energy applications in the areas of transportation, industrial processes, and residential and commercial uses. In addition to the CO/sub 2/ decomposition process, we propose to explore a variety of ideas and evaluate them for scientific and economic merit. A follow-on research and development program will be proposed if the ideas prove promising.
Date:
September 22, 1977
Creator:
Krikorian, O. H.
Object Type:
Report
System:
The UNT Digital Library
Measurement of Coefficients of Reactivity. 0 EFPH. Core I, Seed 2. (T- 550132). Section 1
None
Date:
September 22, 1960
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Cold-pressure-welded joints in large multifilamentary Nb--Ti superconductors
A number of mechanical and electrical measurements were made on joints in typical conductors for the proposed mirror fusion test facility (MFTF) and high field test facility (HFTF). For such measurements, a commercially available cold-pressure-welding machine was used. For joints in the MFTF conductor, which has a large proportion of superconductor, joint strength approached conductor strength. For the HFTF conductor, where the Cu-to-superconductor ratio is 4.33/1, the joint is stronger than the conductor. Electrically, the joints were not superconducting.. While the resistance is higher than might be achieved by other forms of joining, we feel that the cold-weld joint has the advantages of simplicity, speed, reliability, and reproducibility. This makes the method attractive for MFTF, where resistance losses will be small compared with the total 4 K refrigeration requirements.
Date:
September 22, 1977
Creator:
Cornish, D.N.; Deis, D.W. & Zbasnik, J.P.
Object Type:
Article
System:
The UNT Digital Library
The Federal Food Safety System: A Primer
The combined efforts of the food industry and the regulatory agencies often are credited with making the U.S. food supply among the safest in the world. Nonetheless, many food-related health issues persist. At issue is whether the current U.S. regulatory system has the resources and structural organization to protect consumers from these dangers. Also at issue is whether the federal food safety laws themselves, first enacted in the early 1900s, have kept pace with the significant changes that have occurred in the food production, processing, and marketing sectors since then.
Date:
September 22, 2010
Creator:
Johnson, Renée
Object Type:
Report
System:
The UNT Digital Library
Trade Adjustment Assistance: Reforms Have Accelerated Training Enrollment, but Implementation Challenges Remain
A letter report issued by the Government Accountability Office with an abstract that begins "The Trade Adjustment Assistance (TAA) Reform Act of 2002 consolidated two programs serving trade-affected workers and made changes to expand benefits and decrease the time it takes for workers to get services. GAO was asked to provide information on (1) how key reform provisions have affected program services, (2) what have been the challenges in implementing new provisions, (3) whether demand for TAA training has changed and how states are meeting this demand, and (4) what is known about what the TAA program is achieving."
Date:
September 22, 2004
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Information Technology: Treasury Needs to Better Define and Implement Its Earned Value Management Policy
A letter report issued by the Government Accountability Office with an abstract that begins "In 2008, the Department of Treasury (Treasury) plans to spend approximately $3 billion on information technology (IT) investments--the third largest planned IT expenditure among civilian agencies. To more effectively manage such investments, in 2005 the Office of Management and Budget required agencies to use earned value management (EVM). EVM is a project management approach that, if implemented appropriately, provides objective reports of project status, produces early warning signs of impending schedule delays and cost overruns, and provides unbiased estimates of a program's total costs. GAO was asked to assess whether the department and its key component agencies (1) have the policies in place to effectively implement EVM and (2) are adequately using EVM techniques to manage critical system investments. GAO compared agency policies to best practices identified in the Cost Assessment Guide and reviewed the implementation of key EVM practices for several investments."
Date:
September 22, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Veterans Affairs: Health Care and Benefits for Veterans Exposed to Agent Orange
This report provides an overview of health care services and disability compensation benefits available to Vietnam veterans, Children of Vietnam Era veterans, and non-Vietnam veterans exposed to herbicides. This is followed by a discussion of litigation pertaining to Navy veterans of the Vietnam Era who served offshore and were never physically present on Vietnamese soil. The report concludes with a discussion of epidemiologic research conducted to study the health effects of Agent Orange and dioxin exposure on Vietnam veterans.
Date:
September 22, 2010
Creator:
Panangala, Sidath Viranga & Weimer, Douglas Reid
Object Type:
Report
System:
The UNT Digital Library
Public Transit Security Information Sharing: DHS Could Improve Information Sharing through Streamlining and Increased Outreach
A letter report issued by the Government Accountability Office with an abstract that begins "The Transportation Security Administration (TSA), in the Department of Homeland Security (DHS), is committed to sharing information with public transit agencies. The Implementing Recommendations of the 9/11 Commission Act directed GAO to report on public transit information sharing. This report describes (1) the primary mechanisms used to share security information with public transit agencies; and evaluates (2) public transit agencies' satisfaction with federal efforts to share security-related information (e.g., security threats) and opportunities to improve these efforts; and (3) the extent to which DHS has identified goals and measures for sharing information. GAO surveyed 96 of the 694 U.S. public transit agencies based on 2008 ridership and received 80 responses. The 96 public transit agencies surveyed represent about 91 percent of total 2008 ridership. GAO also reviewed documents, such as DHS's Information Sharing Strategy, and interviewed agency officials."
Date:
September 22, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Nuclear Cleanup: Preliminary Results of the Review of the Department of Energy's Rocky Flats Closure Projects
Correspondence issued by the Government Accountability Office with an abstract that begins "For about 40 years, the Department of Energy's Rocky Flats site, near Denver, served as a production facility that made plutonium triggers, or "pits," for nuclear weapons. That role resulted in radiological and chemical contamination of many of the site's buildings and its soil and water. Cleanup of the site, which commenced in 1996, has been a monumental undertaking. The cleanup is being conducted under the Rocky Flats Cleanup Agreement, which is the legally binding agreement that provides the framework for the cleanup effort. The cleanup agreement specifies the roles of the Department of Energy (DOE) and the two regulatory agencies for the site: the Environmental Protection Agency (EPA) and the Colorado Department of Public Health and Environment (Colorado). In February 2001, when GAO last reported on DOE's project to clean up and close the Rocky Flats site, the project was slightly over cost and behind schedule. The vast amount of work remaining to be done at that time, along with various major challenges facing the cleanup contractor, made it doubtful that the contractor could achieve its December 2006 closure goal. But now the contractor hired by DOE …
Date:
September 22, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Unauthorized Alien Students: Issues and "DREAM Act" Legislation
Supporters of comprehensive immigration reform have urged the President and Congress to pursue reform legislation. While legislative action on comprehensive reform does not appear likely during the remainder of the 111th Congress, there may be an effort to enact a measure, commonly referred to as the "DREAM Act," to enable certain unauthorized alien students to legalize their status. Multiple bills have been introduced in recent Congresses to address the unauthorized student population. This report discusses the DREAM Act, the topic of unauthorized alien students in general, and other related legislation.
Date:
September 22, 2010
Creator:
Bruno, Andorra
Object Type:
Report
System:
The UNT Digital Library
Securities and Exchange Commission: Action Needed to Improve Rating Agency Registration Program and Performance-Related Disclosures
A letter report issued by the Government Accountability Office with an abstract that begins "In 2006, Congress passed the Credit Rating Agency Reform Act (Act), which intended to improve credit ratings by fostering accountability, transparency, and competition. The Act established Securities and Exchange Commission (SEC) oversight over Nationally Recognized Statistical Rating Organizations (NRSRO), which are credit rating agencies that are registered with SEC. The Act requires GAO to review the implementation of the Act. This report (1) discusses the Act's implementation; (2) evaluates NRSROs' performance-related disclosures; (3) evaluates removing NRSRO references from certain SEC rules; (4) evaluates the impact of the Act on competition; and (5) provides a framework for evaluating alternative models for compensating NRSROs. To address the mandate, GAO reviewed SEC rules, examination guidance, completed examinations, and staff memoranda; analyzed required NRSRO disclosures and market share data; and interviewed SEC and NRSRO officials and market participants."
Date:
September 22, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Coast Guard: Condition of Some Aids-to-Navigation and Domestic Icebreaking Vessels Has Declined; Effect on Mission Performance Appears Mixed
A letter report issued by the Government Accountability Office with an abstract that begins "The marine transportation system is a critical part of the nation's infrastructure. To facilitate the safety and efficiency of this system, the Coast Guard maintains aids-to-navigation (ATON), such as buoys and beacons, and conducts domestic icebreaking in the Great Lakes, St. Lawrence Seaway, and northeast coast. To conduct these missions, the Coast Guard has a fleet of more than 200 vessels, ranging from 225-foot seagoing buoy tenders and 140-foot domestic icebreakers to 21-foot boats. After the terrorist attacks of September 11, 2001, many of these assets took on additional responsibilities for security patrols and other homeland security duties. Although some assets have been recently acquired, many others are reaching or have exceeded their design service lives, raising concerns about how well and for how much longer these older assets may be able to carry out their missions. In response, GAO examined (1) recent trends in the amount of time these assets have spent performing missions; (2) asset condition and its effect on mission performance; and (3) the actions taken by the Coast Guard to continue to achieve the missions of these assets. To conduct this work, …
Date:
September 22, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Disaster Response: Criteria for Developing and Validating Effective Response Plans
Testimony issued by the Government Accountability Office with an abstract that begins "Among the lessons learned from the aftermath of Hurricane Katrina was that effective disaster response requires planning followed by the execution of training and exercises to validate those plans. The Federal Emergency Management Agency (FEMA) is responsible for disaster response planning. This testimony focuses on (1) criteria for effective disaster response planning established in FEMA's National Response Framework, (2) additional guidance for disaster planning, (3) the status of disaster planning efforts, and (4) special circumstances in planning for oil spills. This testimony is based on prior GAO work on emergency planning and response, including GAO's April 2009 report on the FEMA efforts to lead the development of a national preparedness system. GAO reviewed the policies and plans that form the basis of the preparedness system. GAO did not assess any criteria used or the operational planning for the Deepwater Horizon response."
Date:
September 22, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Military Personnel: Reporting Additional Servicemember Demographics Could Enhance Congressional Oversight
A letter report issued by the Government Accountability Office with an abstract that begins "The high pace of military operations, thousands of casualties in ongoing military operations, and the services' recruiting challenges have raised questions about who is serving in today's military and concern that certain subgroups of the U.S. population may be disproportionately represented among those fighting and dying in support of the war on terrorism. These challenges and concerns have increased the need for information on the demographic characteristics of military personnel. GAO was asked to address three questions: (1) What are the demographic characteristics of servicemembers and how do they compare to the comparable U.S. civilian workforce? (2) How well are the services meeting their overall recruitment goals, and what influences whether or not individuals join the military? (3) What are the demographic characteristics of servicemembers who remained in the military in fiscal years 2000, 2002, and 2004? GAO was also asked to examine the demographic characteristics of servicemembers who died or were wounded in combat in Operations Iraqi Freedom and Enduring Freedom."
Date:
September 22, 2005
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
DOD T&A System Controls: Military Leave Records and Approval of Leave Requests
Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO reviewed the internal control requirements in Title 6, "Pay, Leave, and Allowances of the GAO Policy and Procedures Manual for Guidance of Federal Agencies" as they relate to the Air Force's Air Mobility Command's employee time and attendance (T&A) system, focusing on whether: (1) military leave records must be maintained in paper form containing handwritten signatures; and (2) it is permissible to have the supervisor approve staff leave requests on the Air Force's proposed T&A system by using an user identification code or a password in lieu of the electronic signature required in Title 6."
Date:
September 22, 1999
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Empowerment Zone and Enterprise Community Program: Improvements Occurred in Communities, but the Effect of the Program Is Unclear
A letter report issued by the Government Accountability Office with an abstract that begins "The Empowerment Zone/Enterprise Community (EZ/EC) program is one of the most recent large-scale federal effort intended to revitalize impoverished urban and rural communities. There have been three rounds of EZs and two rounds of ECs, all of which are scheduled to end no later than December 2009. The Community Renewal Tax Relief Act of 2000 mandated that GAO audit and report in 2004, 2007, and 2010 on the EZ/EC program and its effect on poverty, unemployment, and economic growth. This report, which focuses on the first round of the program starting in 1994, discusses program implementation; program oversight; data available on the use of program tax benefits; and the program's effect on poverty, unemployment, and economic growth. In conducting this work, GAO made site visits to all Round I EZs, conducted an e-mail survey of 60 Round I ECs, and used several statistical methods to analyze program effects."
Date:
September 22, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Wildlife Refuges: Changes in Funding, Staffing, and Other Factors Create Concerns about Future Sustainability
A letter report issued by the Government Accountability Office with an abstract that begins "The National Wildlife Refuge System, which is administered by the Fish and Wildlife Service in the Department of the Interior, comprises 585 refuges on more than 96 million acres of land and water that preserve habitat for waterfowl and other migratory birds, threatened and endangered species, and other wildlife. Refuges also provide wildlife-related activities such as hunting and fishing to nearly 40 million visitors every year. GAO was asked to (1) describe changing factors that the refuge system experienced from fiscal years 2002 through 2007, including funding and staffing changes, and (2) examine how habitat management and visitor services changed during this period. We surveyed all refuges; visited 19 refuges in 4 regions; and interviewed refuge, regional, and national officials. In commenting on a draft of this report, the Department of the Interior made technical comments that we have incorporated as appropriate. GAO is not making recommendations in this report."
Date:
September 22, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Contract Management: Service Contract Approach to Aircraft Simulator Training Has Room for Improvement
A letter report issued by the Government Accountability Office with an abstract that begins "The Air Force has turned to service contracts for the F-15C, F-16, Airborne Warning and Control System, and F-15E, and the Army has done the same for helicopter simulator training at its Flight School XXI. The contractors own, operate, and maintain the simulator hardware and software. The military services rely on industry to capitalize the required up-front investment, with the understanding that the contractors will amortize this investment by selling training services by the hour. GAO was asked to address (1) the factors that led the Air Force and Army to acquire simulator training as a service and whether the decision to use this approach was adequately supported; (2) whether implementation of the approach has resulted in the planned number of simulator training sites being activated; and (3) whether the Air Force and Army are effectively tracking the return on their expenditure of taxpayer dollars. GAO makes recommendations to the Secretary of Defense intended to improve management and oversight of these service contracts to help ensure that the best approach is used to provide the war-fighter with needed training. In written comments on a draft of …
Date:
September 22, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Secure Border Initiative: DHS Needs to Address Significant Risks in Delivering Key Technology Investment
A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Homeland Security's (DHS) Secure Border Initiative (SBI) is a multiyear, multibillion-dollar program to secure the nation's borders through, among other things, new technology, increased staffing, and new fencing and barriers. The technology component of SBI, which is known as SBInet, involves the acquisition, development, integration, and deployment of surveillance systems and command, control, communications, and intelligence technologies. GAO was asked to determine whether DHS (1) has defined the scope and timing of SBInet capabilities and how these capabilities will be developed and deployed, (2) is effectively defining and managing SBInet requirements, and (3) is effectively managing SBInet testing. To do so, GAO reviewed key program documentation and interviewed program officials, analyzed a random sample of requirements, and observed operations of a pilot project."
Date:
September 22, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library