Now showing items 13744-13763 of 51732

  • Duplicate of Paul's Final Version Disk 

    Nuclear Control Institute; Leventhal, Paul (1995-04-12)
  • Durability and waterproofing investigations of the building envelope 

    Feero, Beth Anne; 0000-0001-7320-052X (2015-05)
    Durability of the building envelope is an important characteristic to monitor and test on a structure to ensure it does not fail prematurely from water penetration. Due to the building envelop failures existing today, the ...
  • Durability of adhesive joints between concrete and FRP reinforcement in aggressive environments 

    Park, Soojae (2004)
    The durability of the bondline between concrete and its fiber-reinforced polymer reinforcement was characterized at various temperature and humidity levels. The bondline consisted of an epoxy primer, an epoxy putty and ...
  • Durability of calcium-aluminate based binders for rapid repair applications 

    Lute, Racheal Dawn; 0000-0001-9015-6129 (2016-05)
    Within the last few decades, the amount of vehicle miles traveled within the US has increased approximately 40% with the construction of new roads only increasing 4% during this same time period. This dramatic increase ...
  • The Durability of Public Goods Changes the Dynamics and Nature of Social Dilemmas 

    Brown, Sam P.; Taddei, François (Public Library of Science, 2007-07-04)
    An implicit assumption underpins basic models of the evolution of cooperation, mutualism and altruism: The benefits (or pay-offs) of cooperation and defection are defined by the current frequency or distribution of ...
  • Durability testing of rapid, cement-based repair materials for transportation structures 

    Garcia, Anthony Michael (2014-05)
    For repairing concrete transportation infrastructure, such as pavements and bridges, much importance is placed on early-age strength gain as this has a major impact on scheduling and opening to traffic. However, the long-term ...
  • Dust And The Type II-Plateau Supernova 2004dj 

    Meikle, W. P. S.; Kotak, R.; Farrah, D.; Mattila, S.; Van Dyk, S. D.; Andersen, A. C.; Fesen, R.; Filippenko, Alexei V.; Foley, Ryan J.; Fransson, C.; Gerardy, C. L.; Hoflich, Peter A.; Lundqvist, P.; Pozzo, M.; Sollerman, Jesper; Wheeler, J. Craig (2011-05)
    We present mid-infrared (MIR) spectroscopy of a Type II-plateau supernova, SN 2004dj, obtained with the Spitzer Space Telescope, spanning 106-1393 days after explosion. MIR photometry plus optical/near-IR observations are ...
  • Dust And The Type II-Plateau Supernova 2004et 

    Kotak, R.; Meikle, W. P. S.; Farrah, D.; Gerardy, C. L.; Foley, Ryan J.; Van Dyk, S. D.; Fransson, C.; Lundqvist, P.; Sollerman, Jesper; Fesen, R.; Filippenko, Alexei V.; Mattila, S.; Silverman, Jeffrey M.; Andersen, A. C.; Hoflich, Peter A.; Pozzo, M.; Wheeler, J. Craig (2009-10)
    We present mid-infrared (MIR) observations of the Type II-plateau supernova (SN) 2004et, obtained with the Spitzer Space Telescope between 64 and 1406 days past explosion. Late-time optical spectra are also presented. For ...
  • Dust Around R Coronae Borealis Stars. I. Spitzer/Infrared Spectrograph Observations 

    Garcia-Hernandez, D. Anibal; Rao, N. Kameswara; Lambert, David L. (2011-09)
    Spitzer/infrared spectrograph (IRS) spectra from 5 to 37 mu m for a complete sample of 31 R Coronae Borealis stars (RCBs) are presented. These spectra are combined with optical and near-infrared photometry of each RCB at ...
  • Dust Around R Coronae Borealis Stars. II. Infrared Emission Features In An H-Poor Environment 

    Garcia-Hernandez, D. Anibal; Rao, N. Kameswara; Lambert, David L. (2013-08)
    Residual Spitzer/Infrared Spectrograph spectra for a sample of 31 R Coronae Borealis (RCB) stars are presented and discussed in terms of narrow emission features superimposed on the quasi-blackbody continuous infrared ...
  • The Dust Cloud Around The White Dwarf G 29-38. II. Spectrum From 5 To 40 Mu M And Mid-Infrared Photometric Variability 

    Reach, William T.; Lisse, Carey; von Hippel, Ted; Mullally, Fergal (2009-03)
    We model the mineralogy and distribution of dust around the white dwarf G29-39 using the infrared spectrum from 1 to 35 mu m. The spectral model for G29-38 dust combines a wide range of materials based on spectral studies ...
  • Dust, Ice And Gas In Time (DIGIT) Herschel And Spitzer Spectro-Imaging Of SMM3 And SMM4 In Serpens 

    Dionatos, O.; Jorgensen, J. K.; Green, J. D.; Herczeg, G. J.; Evans, Neal J.; Kristensen, L. E.; Lindberg, J. E.; van Dishoeck, E. F. (2013-10)
    Context. Mid-and far-infrared observations of the environment around embedded protostars reveal a plethora of high excitation molecular and atomic emission lines. Different mechanisms for the origin of these lines have ...
  • Dust, Ice, and Gas in Time (DIGIT) Herschel Observations of GSS30-IRS1 in Ophiuchus 

    Je, Hyerin; Lee, Jeong-Eun; Lee, Seokho; Green, Joel D.; Evans, Neal J., II (2015-03)
    As a part of the "Dust, Ice, and Gas In Time" (DIGIT) key program on Herschel, we observed GSS30-IRS1, a Class I protostar located in Ophiuchus (d = 120 pc), with Herschel/Photodetector Array Camera and Spectrometer. More ...
  • Dusting off dirty hands 

    Murphy, Hart Hamilton (2013-05)
    This paper revisits one of the more frequented stops at the crossroads of politics and morality in contemporary ethical theory, Michael Walzer’s essay “Political Action: The Problem of Dirty Hands.” The aim is to provide ...
  • Dusty Disks Around Central Stars Of Planetary Nebulae 

    Clayton, Geoffrey C.; De Marco, Orsola; Nordhaus, Jason; Green, Joel; Rauch, Thomas; Werner, Klaus; Chu, You-Hua (2014-06)
    Only a few percent of cool, old white dwarfs (WDs) have infrared excesses interpreted as originating in small hot disks due to the infall and destruction of single asteroids that come within the star's Roche limit. Infrared ...
  • Duty cycle analysis for aircraft control surface actuation 

    Koran, Lucas Ryan, 1982- (2007-05)
    PBW actuation methods, particularly Electro-Mechanical Actuators (EMA) and Electro-Hyrdrostatic Actuators (EHA), are reviewed and compared to the conventional hydraulically based actuation methods which have dominated ...
  • DW4-Files - Speech 

    Cronkite, Walter (1988-07-07)
  • Dwarf Galaxy Dark Matter Density Profiles Inferred From Stellar And Gas Kinematics 

    Adams, Joshua J.; Simon, Joshua D.; Fabricius, Maximillian H.; van den Bosch, Remco C. E.; Barentine, John C.; Bender, Ralf; Gebhardt, Karl; Hill, Gary J.; Murphy, Jeremy D.; Swaters, R. A.; Thomas, Jens; van de Ven, Glenn (2014-07)
    We present new constraints on the density profiles of dark matter (DM) halos in seven nearby dwarf galaxies from measurements of their integrated stellar light and gas kinematics. The gas kinematics of low-mass galaxies ...
  • Dwarfs Gobbling Dwarfs: A Stellar Tidal Stream Around NGC 4449 and Hierarchical Galaxy Formation on Small Scales 

    Martinez-Delgado, David; Romanowsky, Aaron J.; Gabany, R. Jay; Annibali, Francesca; Arnold, Jacob A.; Fliri, Jurgen; Zibetti, Stefano; van der Marel, Roeland P.; Rix, Hans-Walter; Chonis, Taylor S.; Carballo-Bello, Julio A.; Aloisi, Alessandra; Maccio, Andrea V.; Gallego-Laborda, J.; Brodie, Jean P.; Merrifield, Michael R. (2012-04)
    A candidate diffuse stellar substructure was previously reported in the halo of the nearby dwarf starburst galaxy NGC 4449 by Karachentsev et al. We map and analyze this feature using a unique combination of deep ...