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Flight Comparison of Performance and Cooling Characteristics of Exhaust-Ejector Installation with Exhaust-Collector-Ring Installation

Description: Flight and ground investigations have been made to compare an exhaust-ejector installation with a standard exhaust-collector-ring installation on air-cooled aircraft engines in a twin-engine airplane. The ground investigation allowed that, whereas the standard engine would have overheated above 600 horsepower, the engine with exhaust ejectors cooled at take-off operating conditions at zero ram. The exhaust ejectors provided as much cooling with cowl flaps closed as the conventional cowl flaps i… more
Date: February 14, 1947
Creator: Acker, Loren W. & Kleinknecht, Kenneth S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Equilibrium Adsorption of Krypton and Xenon on Activated Carbon and Linde Molecular Sieves

Description: Equilibrium krypton and xenon adsorption isotherms were obtained for four varieties of charcoal and for Linde Molecular Sieves Types 4A and 5A, generally at 0, 25, and 60°c. Such data are of interest in connection with design and evaluation of adsorbers for radioactive noble gas fission products. The isotherms were fitted, by linear regression analysis, to straight-line forms of the Freundlich and Langmuir equations. The Freundlich linear equation gave the better fit and the parameters of this … more
Date: February 14, 1961
Creator: Ackley, R. D. & Browning, W. E., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Israel: Background and U.S. Relations

Description: This report explores the history of U.S.-Israeli relationships and current Israeli issues such as border security, defense, Israel-Palestinian conflicts, economy, and democracy.
Date: February 14, 2011
Creator: Addis, Casey L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CRADA Final Report: Process development for hybrid solar cells

Description: TCF funding of a CRADA between LBNL and RSLE leveraged RSLE's original $1M investment in LBNL research and led to development of a solar cell fabrication process that will bring the high efficiency, high voltage hybrid tandem solar cell closer to commercialization. RSLE has already built a pilot line at its Phoenix, Arizona site.
Date: February 14, 2011
Creator: Ager, Joel W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Oxygen Isotopes in Chondritic Interplanetary Dust: Parent-Bodies and Nebular Oxygen Reservoirs

Description: Planetary objects have preserved various amounts of oxygen issued from isotopically different oxygen reservoirs reflecting their origin and physico-chemical history. An {sup 16}O-rich component is preserved in refractory inclusions (CAIs) whereas meteorites matrices are enriched in an {sup 16}O-poor component. The origin of these components is still unclear. The most recent models are based on isotope selective photodissociation of CO in a {sup 16}O-rich nebula/presolr cloud resulting in a {sup… more
Date: February 14, 2006
Creator: Aleon, J.; McKeegan, K. D. & Leshin, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Oral History Interview with Harold Salfen, February 14, 2000

Description: Interview with Harold Salfen, a Army Air Force WWII veteran from O'Fallon, Missouri. Salfen discusses his hometown and family background, his childhood and education, working in St. Louis, attending the University of Missouri, joining the Army Air Force and training, operating a ground radar in the European Theater, liberating Buchenwald Concentration Camp, the end of the war, and returning home. In appendix is a biography/resumé of Salfen's.
Date: February 14, 2000
Creator: Alexander, William J. & Salfen, Harold
Item Type: Refine your search to only Book
Partner: UNT Oral History Program
open access

Studies of vibrational properties in Ga stabilized delta-Pu by extended X-ray absorption fine structure

Description: Temperature dependent extended x-ray absorption fine structure (EXAFS) spectra were measured for a 3.3 at. % Ga stabilized Pu alloy over the range T= 20 - 300 K. EXAFS data were acquired at both the Ga K-edge and the Pu L{sub III} edge. Curve-fits were performed to the first shell interactions to obtain pair-distance distribution widths, {sigma}, as a function of temperature. The temperature dependence of {sigma}(T) was accurately modeled using a correlated-Debye model for the lattice vibration… more
Date: February 14, 2002
Creator: Allen, P. G.; Henderson, A. L.; Sylwester, E. R.; Turchi, P. E. A.; Shen, T. H.; Gallegos, G. F. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Temperature Study of CdZnTe Coplanar-Grid Detectors

Description: The coplanar-grid (CPG) and other electron only detection techniques have made possible the use of CdZnTe-based detectors for gamma-ray spectroscopy when high efficiency, good energy resolution, and near room temperature operation are required. Despite the demonstrated potential of the technologies, widespread use remains hampered in part by the limited availability of the highly uniform CdZnTe material required for high-resolution spectroscopy. However, it has been recently shown that mild coo… more
Date: February 14, 2006
Creator: Amman, Mark; Lee, Julie S. & Luke, Paul N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Dynamically Adaptive Arbitrary Lagrangian-Eulerian Method for Solution of the Euler Equations

Description: A new method that combines staggered grid arbitrary Lagrangian-Eulerian (ALE) techniques with structured local adaptive mesh refinement (AMR) has been developed for solution of the Euler equations. The novel components of the methods are driven by the need to reconcile traditional AMR techniques with the staggered variables and moving, deforming meshes associated with Lagrange based ALE schemes. We develop interlevel solution transfer operators and interlevel boundary conditions first in the ca… more
Date: February 14, 2003
Creator: Anderson, R W; Elliott, N S & Pember, R B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

On-Machine Acceptance

Description: Probing processes are used intermittently and not effectively as an on-line measurement device. This project was needed to evolve machine probing from merely a setup aid to an on-the-machine inspection system. Use of probing for on-machine inspection would significantly decrease cycle time by elimination of the need for first-piece inspection (at a remote location). Federal Manufacturing and Technologies (FM and T) had the manufacturing facility and the ability to integrate the system into prod… more
Date: February 14, 2000
Creator: Arnold, K. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Discretionary Budget Authority by Subfunction: An Overview

Description: President Obama's FY2013 budget submission was released on February 13, 2012. This report provides a graphical overview of historical trends in discretionary budget authority (BA) from FY1976 through FY2011, enacted levels for FY2012 spending, and the levels consistent with the President's proposals for FY2013 through FY2017. Spending caps and budget enforcement mechanisms established in the Budget Control Act (BCA) of 2011 will probably strongly affect the FY2013 budget cycle. This report may … more
Date: February 14, 2012
Creator: Austin, D. Andrew
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electron-impact ionization of atomic hydrogen

Description: Since the invention of quantum mechanics, even the simplest example of collisional breakup in a system of charged particles, e{sup {minus}} + H {r_arrow} H{sup +} + e{sup {minus}} + e{sup {minus}}, has stood as one of the last unsolved fundamental problems in atomic physics. A complete solution requires calculating the energies and directions for a final state in which three charged particles are moving apart. Advances in the formal description of three-body breakup have yet to lead to a viable… more
Date: February 14, 2000
Creator: Baertschy, Mark D.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Composite Octet Searches with Jet Substructure

Description: Many new physics models with strongly interacting sectors predict a mass hierarchy between the lightest vector meson and the lightest pseudoscalar mesons. We examine the power of jet substructure tools to extend the 7 TeV LHC sensitivity to these new states for the case of QCD octet mesons, considering both two gluon and two b-jet decay modes for the pseudoscalar mesons. We develop both a simple dijet search using only the jet mass and a more sophisticated jet substructure analysis, both of whi… more
Date: February 14, 2012
Creator: Bai, Yang & Shelton, Jessie
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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