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open access

1/5-scale experiment of a Mark I boiling-water reactor pressure-suppression system under hypothetical LOCA conditions

Description: Experimental results show the sensitivity of hydrodynamically generated vertical loads to changes in the drywell pressurization rate, downcomer submergence, and vent-line loss coefficient. Insignificant effects on peak vertical loads were observed when the vent-line loss was varied. Peak vertical loads can be reduced by adding initial drywell overpressure so that the downcomers are partly cleared of water. Spatial variation of pressure at about the time of vent clearing is seen in comparisons o… more
Date: July 8, 1977
Creator: Pitts, J. H. & McCauley, E. W.
Item Type: Refine your search to only Article
open access

2-D Imaging of Electron Temperature in Tokamak Plasmas

Description: By taking advantage of recent developments in millimeter wave imaging technology, an Electron Cyclotron Emission Imaging (ECEI) instrument, capable of simultaneously measuring 128 channels of localized electron temperature over a 2-D map in the poloidal plane, has been developed for the TEXTOR tokamak. Data from the new instrument, detailing the MHD activity associated with a sawtooth crash, is presented.
Date: July 8, 2004
Creator: Munsat, T.; Mazzucato, E.; Park, H.; Domier, C. W.; Johnson, M.; Luhmann, N. C. Jr. et al.
Item Type: Refine your search to only Report
open access

3-D Silicon Photonic Lattices- Cornerstone of an Emerging Photonics Revolution

Description: Three-dimensional photonic lattices are engineered materials which are the photonic analogues of semiconductors. These structures were first proposed and demonstrated in the mid-to-late 1980's. However, due to fabrication difficulties, lattices active in the infrared are only just emerging. Wide ranges of structures and fabrication approaches have been investigated. The most promising approach for many potential applications is a diamond-like structure fabricated using silicon microprocessing t… more
Date: July 8, 1999
Creator: Fleming, J.G. & Lin, Shawn-Yu
Item Type: Refine your search to only Article
open access

40 Years of Discovery

Description: History is most interesting when seen through the eyes of those who lived it. In this 40th anniversary retrospective of bioscience research at Lawrence Livermore National Laboratory, we've asked 19 scientists to share their personal recollections about a major accomplishment in the program's history. We have not tried to create a comprehensive or seamless story. Rather, we've attempted to capture the perspectives of key individuals, each of whom worked on a research program that met significant… more
Date: July 8, 2003
Creator: Heller, Arnie; Henke, Amy; Weinstein, Bert & Thomas, Cindy
Item Type: Refine your search to only Report
open access

Abortion Services and Military Medical Facilities

Description: The purpose of this report is to describe and discuss the provisions for providing abortion services to military personnel, their dependents and other military health care beneficiaries at military medical facilities. The report describes the history of these provisions, with particular emphasis on legislative actions. Finally, this report discusses a number of proposals to modify the law as well as other related legislative and administrative actions.
Date: July 8, 2010
Creator: Burrelli, David F.
Item Type: Refine your search to only Report
open access

AC Loss Analysis on the Superconducting Coupling Magnet in MICE

Description: A pair of coupling solenoids is used in MICE experiment to generate magnetic field which keeps the muons within the iris of thin RF cavity windows. The coupling solenoids have a 1.5-meter inner diameter and will produce 7.4 T peak magnetic field. Three types of AC losses in coupling solenoid are discussed. The affect of AC losses on the temperature distribution within the cold mass during charging and rapid discharging process is analyzed also. The analysis result will be further confirmed by t… more
Date: July 8, 2008
Creator: Wu, Hong; Wang, Li; Green, Michael; Li, LanKai; Xu, FengYu; Liu, XiaoKun et al.
Item Type: Refine your search to only Article
open access

Advanced Readout Electronics for Multielement CdZnTe Sensors

Description: A generation of high performance front-end and read-out ASICs customized for highly segmented CdZnTe sensors is presented. The ASICs, developed in a multi-year effort at Brookhaven National Laboratory, are targeted to a wide range of applications including medical, safeguards/security, industrial, research, and spectroscopy. The front-end multichannel ASICs provide high accuracy low noise preamplification and filtering of signals, with versions for small and large area CdZnTe elements. They imp… more
Date: July 8, 2002
Creator: De Geronimo, G.; O'Connor, P.; Kandasamy, A. & Grosholz, J.
Item Type: Refine your search to only Article
open access

Advances in NLTE Modeling for Integrated Simulations

Description: The last few years have seen significant progress in constructing the atomic models required for non-local thermodynamic equilibrium (NLTE) simulations. Along with this has come an increased understanding of the requirements for accurately modeling the ionization balance, energy content and radiative properties of different elements for a wide range of densities and temperatures. Much of this progress is the result of a series of workshops dedicated to comparing the results from different codes… more
Date: July 8, 2009
Creator: Scott, H A & Hansen, S B
Item Type: Refine your search to only Article
open access

Affinity functions for modeling glass dissolution rates

Description: Glass dissolution rates decrease dramatically as glasses approach "saturation" with respect to the leachate solution. This effect may lower the dissolution rate to 1/100 to 1/1000 of the unsaturated rate. Although rate controls on glass dissolution are best understood for conditions far from saturation, most repository sites are chosen where water fluxes are minimal, and therefore the waste glass is most likely to dissolve under conditions close to saturation. Our understanding of controls on d… more
Date: July 8, 1998
Creator: Bourcier, W L
Item Type: Refine your search to only Article
open access

Afghanistan Reconstruction: Progress Made in Constructing Roads, but Assessments for Determining Impact and a Sustainable Maintenance Program Are Needed

Description: A letter report issued by the Government Accountability Office with an abstract that begins "The Afghan government, the United States, and other donors consider road reconstruction a top development priority for Afghanistan. Almost 20 percent of the U.S. Agency for International Development's (USAID) $5.9 billion in assistance to Afghanistan has been for roads. The Department of Defense (Defense) has committed about $560 million for roads, of which Commander's Emergency Response Program (CERP) … more
Date: July 8, 2008
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
open access

Afghanistan: U.S. Foreign Assistance

Description: The U.S. program of assistance to Afghanistan is intended to stabilize and strengthen the Afghan economic, social, political, and security environment so as to blunt popular support for extremist forces in the region. Since 2001, nearly $38 billion has been appropriated toward this effort. This report provides a "big picture" overview of the U.S. aid program and congressional action. It describes what various aid agencies report they are doing in Afghanistan. It does not address the effectivene… more
Date: July 8, 2009
Creator: Tarnoff, Curt
Item Type: Refine your search to only Report
open access

Afghanistan: U.S. Foreign Assistance

Description: The U.S. program of assistance to Afghanistan is intended to stabilize and strengthen the Afghan economic, social, political, and security environment so as to blunt popular support for extremist forces in the region. Since 2001, nearly $48 billion has been appropriated toward this effort. This report provides a "big picture" overview of the U.S. aid program and congressional action. It describes what various aid agencies report they are doing in Afghanistan. It does not address the effectivene… more
Date: July 8, 2010
Creator: Tarnoff, Curt
Item Type: Refine your search to only Report
open access

Air Force Logistics: C-17 Support Plan Does Not Adequately Address Key Issues

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO reviewed the Air Force's C-17 logistics support plan, focusing on the: (1) C-17's core logistics capabilities; (2) cost effectiveness of the planned support strategy; and (3) Air Force's implementation of the plan under current law."
Date: July 8, 1999
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
open access

Air Kerma Calibration Factors and kch Values for PTW Soft X-ray, NACP and Roos Ionization Chambers at Very Low X-ray Energies (0.035 mm - 1.0 mm Al HVL)

Description: Several national and international protocols have been established for the dosimetry of x-ray beams used in radiotherapy. For the very low energy x-rays (0.035mm-1.0 mm Al HVL) only two codes are available: the UK IPEMB Code of Practice and the German standard, DIN 6809 Part 4. The measurement of very low energy x-ray beams is normally performed with parallel plate ionization chambers calibrated at a standards laboratory and characterized by an air kerma calibration factor N{sub k}. According t… more
Date: July 8, 1999
Creator: Ipe, Nisy E.
Item Type: Refine your search to only Report
open access

AISI/DOE Technology Roadmap Program: Development of Appropriate Resistance Spot Welding Practice for Transformation-Hardened Steels

Description: This report describes work accomplished in the project, titled ''Development of Appropriate Resistance Spot Welding Practice for Transformation-Hardened Steels.'' The Phase 1 of the program involved development of in-situ temper diagrams for two gauges of representative dual-phase and martensitic grades of steels. The results showed that tempering is an effective way of reducing hold-time sensitivity (HTS) in hardenable high-strength sheet steels. In Phase 2, post-weld cooling rate techniques, … more
Date: July 8, 2002
Creator: Chuko, Wayne & Gould, Jerry
Item Type: Refine your search to only Report
open access

Altitude Performance of AN-F-58 Fuels in British Rolls-Royce Nene Single Combustor

Description: "An investigation was conducted with a single combustor from a British Rolls-Royce Nene turbojet engine to determine the altitude performance characteristics of AN-F-58 fuels. Three fuel blends conforming to AN-F-58 specifications were prepared in order to determine the influence of fuel boiling temperatures and aromatic content on combustion efficiencies and altitude operational limits. The performance of the three AN-F-58 fuels was compared in the range of altitudes from sea level to 65,000 f… more
Date: July 8, 1949
Creator: Cook, William P. & Koch, Richard G.
Item Type: Refine your search to only Report
open access

Americans with Disabilities Act (ADA) Requirements Concerning the Provision of Interpreters by Hospitals and Doctors

Description: This report briefly discusses the Americans with Disabilities Act (ADA), which prohibits discrimination against individuals with disabilities by places of public accommodation. This report specifically discusses a common question of whether or not the ADA requires medical doctors and hospitals to provide an interpreter when they have a patient with a hearing disability.
Date: July 8, 2004
Creator: Jones, Nancy Lee
Item Type: Refine your search to only Report
open access

Americans with Disabilities Act (ADA) Requirements Concerning the Provision of Interpreters by Hospitals and Doctors

Description: The Americans with Disabilities Act prohibits discrimination against individuals with disabilities by places of public accommodations. A common question concerning the ADA is whether this prohibition requires medical doctors and hospitals to provide an interpreter when they have a patient with a hearing disability. This requirement varies depending upon the situation presented but situations may arise where there is an obligation to provide an interpreter. Updated as appropriate.
Date: July 8, 2004
Creator: Jones, Nancy Lee
Item Type: Refine your search to only Report
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