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Accelerator Challenges and Opportunities for Future Neutrino Experiments

Description: There are three types of future neutrino facilities currently under study, one based on decays of stored beta-unstable ion beams (?Beta Beams?), one based on decays of stored muon beams (?Neutrino Factory?), and one based on the decays of an intense pion beam (?Superbeam?). In this paper we discuss the challenges each design team must face and the R&D being carried out to turn those challenges into technical opportunities. A new program, the Muon Accelerator Program, has begun in the U.S. t… more
Date: December 24, 2010
Creator: Zisman, Michael S
Item Type: Refine your search to only Article
open access

AIDS: An Overview of Issues

Description: This report discusses the many difficult policy dilemmas associated with the AIDS epidemic, including past Congressional funding to support AIDS research and education efforts, strategies for controlling the spread of the AIDS virus, and methods and resources available for the care and treatment of persons with AIDS.
Date: December 24, 1987
Creator: Smith, Pamela W.
Item Type: Refine your search to only Report
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Appropriations for FY2003: Interior and Related Agencies

Description: Appropriations are one part of a complex federal budget process that includes budget resolutions, appropriations (regular, supplemental, consolidated, and continuing) bills, rescissions, and budget reconciliation bills. This report is a guide to one of the 13 regular appropriations bills that Congress considers each year. It is designed to supplement the information provided by the House and Senate Interior Appropriations Subcommittees.
Date: December 24, 2002
Creator: Hardy-Vincent, Carol & Boren, Susan
Item Type: Refine your search to only Report
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Assistance to North Korea

Description: This report is categorized into five categories: (I) Introduction, (II) Congress' Role in U.S. Assistance to North Korea, (III) Energy Assistance, (IV) Food Assistance and (V) Other Forms of Assistance.
Date: December 24, 2008
Creator: Manyin, Mark E. & Nikitin, Mary Beth
Item Type: Refine your search to only Report
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Calculation of the Aerodynamic Loading of Flexible Wings of Arbitrary Plan Form and Stiffness

Description: "A method is presented for calculating the aerodynamic loading, the divergence speed, and certain stability derivatives of wings and tail surfaces of arbitrary plan form and stiffness. Provision is made for using either stiffness curves and root-rotation constants or influence coefficients in the analysis. Computing forms, tables of numerical constants required in the analysis, and an illustrative example are included to facilitate calculations by means of the method" (p. 1).
Date: December 24, 1948
Creator: Diederich, Franklin W.
Item Type: Refine your search to only Report
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Calculation of the aerodynamic loading of swept and unswept flexible wings of arbitrary stiffness

Description: A method is presented for calculating the aerodynamic loading, the divergence speed, and certain stability derivatives of swept and unswept wings and tail surfaces of arbitrary stiffness. Provision is made for using either stiffness curves and root rotation constants or structural influence coefficients in the analysis. Computing forms, tables of numerical constants required in the analysis, and an illustrative example are included to facilitate calculations by means of the method.
Date: December 24, 1948
Creator: Diederich, Franklin W.
Item Type: Refine your search to only Report
open access

Cassini RTG Program. Monthly technical progress report, October 30--November 26, 1995

Description: The technical progress achieved during the period 30 October through 26 November, 1995 is described herein. This report is organized by program task structure: (1) spacecraft integration and liaison; (2) engineering support; (3) safety; (4) qualified unicouple production; (5) ETG fabrication, assembly, and test; (6) ground support equipment (GSE); (7) RTG shipping and launch support; (8) designs, reviews, and mission applications; (9) project management, quality assurance, reliability, contract… more
Date: December 24, 1995
Item Type: Refine your search to only Report
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Characterization of nodular and thermal defects in hafnia/silica multilayer coatings using optical, photothermal, and atomic force microscopy

Description: Multilayer coatings manufactured from metallic hafnium and silica sources by reactive electron beam deposition, are being developed for high fluence optics in a fusion laser with a wavelength of 1053 nm and a 3 ns pulse length. Damage threshold studies have revealed a correlation between laser damage and nodular defects, but interestingly laser damage is also present in nodule-free regions. Photothermal studies of optical coatings reveal the existence of defects with strong optical absorption i… more
Date: December 24, 1997
Creator: Stolz, C. J.; Yoshiyama, J. M.; Salleo, A.; Wu, Z. L.; Green, J. & Krupka, R.
Item Type: Refine your search to only Article
open access

Computational compact torus experiment

Description: We describe a typical 2D magnetohydrodynamic (MHD) calculation of rundown of plasma in a coaxial, magnetized gun and injection of the plasma and reconnection of the embedded magnetic fields to form a compact toroidal plasma.
Date: December 24, 1980
Creator: Eddleman, J.L.; McNamara, B.; Nash, J.K.; Shearer, J.W. & Turner, W.C.
Item Type: Refine your search to only Report
open access

Consideration of Budgetary Legislation During Presidential Transition Years: A Brief Overview

Description: This report examines the timing of presidential budget submissions during the past five transition years, including submissions by Presidents Jimmy Carter in 1977, Ronald Reagan in 1981, George H.W. Bush in 1989, Bill Clinton in 1993, and George W Bush in 2001 and the timeliness of House and Senate actions in those years regarding the consideration of Budgetary measures.
Date: December 24, 2008
Creator: Keith, Robert & Momoko, Soltis
Item Type: Refine your search to only Report
open access

Correlation of Buffet Boundaries Predicted From Wind-Tunnel Tests With Those Measured During Flight Tests on the F8F-1 and X-1 Airplanes -Transonic-Bump Method

Description: Memorandum presenting testing of semispan wing-fuselage models of the F8F-1 and X-1 airplanes in the 16-foot high-speed wind tunnel utilizing the transonic-bump method. The variations of lift coefficient with angle of attack and Mach number and pitching-moment coefficient with lift coefficient at various Mach numbers are presented for the models. The buffet boundaries were found to be in reasonable agreement with those determined from flight tests of full-scale airplanes.
Date: December 24, 1952
Creator: Martin, Andrew & Reed, James F.
Item Type: Refine your search to only Report
open access

Department of Homeland Security: Consolidation of Border and Transportation Security Agencies

Description: Included in this report are conceptual definitions for “border management” and “border security;” descriptions of the missions of the principal border management agencies; brief discussion of seaport and transportation security, since both are integral to border security; and a brief exploration of issues raised by transferring the Federal Protective Service, the Office for Domestic Preparedness, and the Federal Law Enforcement Training Center to this new directorate. The report concludes with … more
Date: December 24, 2002
Creator: Krouse, William J.
Item Type: Refine your search to only Report
open access

Development and Testing of an Improved Agitator for the Redox and Purex Separations Plants

Description: Relatively frequent agitator failures in HAPO Separations Plants have interfered with process continuity, contributed to process difficulties, and resulted in considerable maintenance expense. Predominantly the failures have been because of gear-reduction drive unit break-down or because of metallic fatigue and degeneration of the shaft-paddle assemblies. A simplified, slow-speed, direct drive agitator, previously described in HW-52755, proved to be quite durable and satisfactory during extende… more
Date: December 24, 1959
Creator: Dunn, J. & Sloat, R. J.
Item Type: Refine your search to only Report
open access

Development of GaAs-Based Monolithic Surface Acoustic Wave Devices for Chemical Sensing and RF Filter Applications

Description: Since their invention in the mid-1960's, surface acoustic wave (SAW) devices have become popular for a wide variety of applications. SAW devices represent a low-cost and compact method of achieving a variety of electronic signal processing functions at high frequencies, such as RF filters for TV or mobile wireless communications [1]. SAW devices also provide a convenient platform in chemical sensing applications, achieving extremely high sensitivity to vapor phase analytes in part-per-billion c… more
Date: December 24, 1998
Creator: Baca, A. G.; Casalnuovo, S. A.; Drummond, T. J.; Frye, G. C.; Heller, E. J.; Hietala, V. M. et al.
Item Type: Refine your search to only Article
open access

Effect of horizontal-tail span and vertical location on the aerodynamic characteristics of an unswept tail assembly in sideslip

Description: "An investigation has been conducted in the Langley stability tunnel on a vertical-tail model with a stub fuselage in combination with various horizontal tails to determine the effect of horizontal-tail span and vertical location of the horizontal tail relative to the vertical tail on the aerodynamic characteristics of an unswept tail assembly in sideslip. The results of the investigation indicated that the induced loading carried by the horizontal tail produced a rolling moment about the point… more
Date: December 24, 1952
Creator: Riley, Donald R.
Item Type: Refine your search to only Report
open access

Effect of Long-Range Interactions on Order

Description: Harrison and Paskin (HP) have calculated the ordering energy of β-CuZn using recent theoretical techniques of treating electron screening and Mott's polar model of an alloy. Good agreement is obtained between the calculated total energy of the order-disorder transformation and specific heat measurements. A consequence of the HP calculation is that the ordering energy is long-range and oscillates in sign. Walker and Keating recently measured the neutron diffuse scattering of β-CuZn above the cri… more
Date: December 24, 1963
Creator: Paskin, Arthur
Item Type: Refine your search to only Report
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EFFECTS OF ALTERNATE ANTIFOAM AGENTS, NOBLE METALS, MIXING SYSTEMS AND MASS TRANSFER ON GAS HOLDUP AND RELEASE FROM NONNEWTONIAN SLURRIES

Description: Gas holdup tests performed in a small-scale mechanically-agitated mixing system at the Savannah River National Laboratory (SRNL) were reported in 2006. The tests were for a simulant of waste from the Hanford Tank 241-AZ-101 and featured additions of DOW Corning Q2-3183A Antifoam agent. Results indicated that this antifoam agent (AFA) increased gas holdup in the waste simulant by about a factor of four and, counter intuitively, that the holdup increased as the simulant shear strength decreased (… more
Date: December 24, 2007
Creator: Guerrero, H; Mark Fowley, M; Charles Crawford, C; Michael Restivo, M & Robert Leishear, R
Item Type: Refine your search to only Report
open access

Effects of Hydrogen Implantation into GaN

Description: Proton implantation in GaN is found to reduce the free carrier density through two mechanisms - first, by creating electron and hole traps at around Ec-0.8eV and Ev+0.9eV that lead to compensation in both n- and p-type material, and second, by leading to formation of (AH)O complexes, where A is any acceptor (Mg, Ca, Zn, Be, Cd). The former mechanism is usefid in creating high resistivity regions for device isolation, whereas the latter produces unintentional acceptor passivation that is detrime… more
Date: December 24, 1998
Creator: Abernathy, C.R.; Han, J.; Pearton, S.J.; Shul, R.J.; Song, C.Y.; Stavola, M. et al.
Item Type: Refine your search to only Article
open access

Environmental Degradation of Materials for Nuclear Waste Repositories Engineered Barriers

Description: Several countries are considering geological repositories for the storage of nuclear waste. Most of the environments for these repositories will be reducing in nature, except for the repository in the US, which is going to be oxidizing. For the reducing repositories, alloys such as carbon steel, copper, stainless steels and titanium are being evaluated. For the repository in the US, some of the most corrosion resistant commercially available alloys are being investigated. This paper presents a … more
Date: December 24, 2006
Creator: Rebak, R B
Item Type: Refine your search to only Article
open access

The equivalent, fundamental-mode source

Description: In 1960, Hansen analyzed the problem of assembling fissionable material in the presence of a weak neutron source. Using point kinetics, he derived the weak source condition and analyzed the consequences of delayed initiation during ramp reactivity additions. Although not clearly stated in Hansen`s work, the neutron source strength that appears in the weak source condition actually corresponds to the equivalent, fundamental-mode source. In this work, they describe the concept of an equivalent, f… more
Date: December 24, 1996
Creator: Spriggs, G. D.; Busch, R. D.; Sakurai, Takeshi & Okajima, Shigeaki
Item Type: Refine your search to only Report
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Feasibility of Proton Radiography for Mesoscale Radiography.

Description: The power of sufficiently-energetic proton beams to penetrate high atomic number (Z) metals, together with the potential for high-dynamic-range measurements, enabled by the roughly linear energy loss mechanism in the material, makes ion beam imaging complementary to x-ray techniques and, in many cases, it is superior. Specifically, x-ray imaging is poor in an object that contains both low- and high-Z materials. This is because the energetic x-rays required to penetrate high-Z material(s) intera… more
Date: December 24, 2003
Creator: Bench, G.; Felter, T.; Martz, H. & Antolak, A.
Item Type: Refine your search to only Report
open access

Federal Health Centers

Description: This report provides an overview of the federal health center program including its statutory authority, program requirements, and appropriation levels. The report then describes health centers in general, where they are located, their patient population, and some outcomes associated with health center use. It also describes some federal programs available to assist health center operations including the FQHC designation for Medicare and Medicaid payments. The report concludes with a brief disc… more
Date: December 24, 2013
Creator: Heisler, Elayne J.
Item Type: Refine your search to only Report
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