Now showing items 581-600 of 1674

    • Interactions of aqueous Ag+ with fulvic acids: mechanisms of silver nanoparticle formation and investigation of stability 

      Adegboyega, Nathaniel F.; Sharma, Virender K.; Siskova, Karolina; Zboril, Radek; Sohn, Mary; Schultz, Brian J.; Banerjee, Sarbajit (2012-12-13)
      This study investigated the possible natural formation of silver nanoparticles (AgNPs) in Ag+ −fulvic acid (FA) solutions under various environmentally relevant conditions (temperature, pH, and UV light). Increase in ...
    • International observational campaigns of the last two eclipses in EE Cephei: 2003 and 2008/9 

      Gałan, Cezary; Mikołajewski, Maciej; Tomov, Toma V.; Graczyk, Dariusz; Apostolovska, Gordana; Barzova, Ina S.; Bellas-Velidis, Ioannis; Bilkina, B. I.; Blake, Rick Melvin; Németh, Péter (2012-07-27)
      Context. EE Cep is an unusual long-period (5.6 yr) eclipsing binary discovered during the mid-twentieth century. It undergoes almost-grey eclipses that vary in terms of both depth and duration at different epochs. The ...
    • Interplanetary transport mechanisms of solar energetic particles 

      Qin, Gang; Zhang, Ming; Dwyer, Joseph R.; Rassoul, Hamid K. (2004-07-10)
      Numerical simulations of charged particle trajectories in a Parker field with model turbulence are used to study the transport mechanisms of solar energetic particles (SEPs): magnetic focusing, pitch-angle diffusive transport ...
    • Interpretation of searches for supersymmetry with simplified models 

      Chatrchyan, S.A.; Khachatryan, Vladimir A.; Sirunyan, A.M.; Tumasyan, A.R.; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Vodopiyanov, Igor; Yumiceva, Francisco (2013-09-23)
      The results of searches for supersymmetry by the CMS experiment are interpreted in the framework of simplified models. The results are based on data corresponding to an integrated luminosity of 4.73 to 4.98 fb-1. The data ...
    • Investigations on the development of a mixed displacement-pressure formulation for an anelastic displacement-field finite element 

      Rusovici, Razvan (2006-03-17)
      Space and weapon delivery systems contain guidance components and payload that need to be protected from the extremely harsh acoustic excitation present during launch operations. The above example represents just one ...
    • Ion escape from the high latitude magnetopause: Analysis of oxygen and proton dynamics in the presence of magnetic turbulence 

      Taktakishvili, Alexander L.; Zimbardo, G.; Amata, Ermanno; Savin, Sergey P.; Greco, Antonella; Veltri, Pierluigi; Lopez, Ramon E. (2007-08-29)
      Recent Cluster observations of the vicinity of the high latitude magnetopause indicate the presence of beams of singly charged oxygen ions, which are of ionospheric origin. In this paper we examine the role of magnetic ...
    • Iron and copper enrichment of suspended particles in dispersed hydrothermal plumes along the mid‐Atlantic Ridge 

      Trefry, John H.; Trocine, Robert P.; Klinkhammer, Gary P.; Rona, Peter A. (1985-08)
      Particulate Fe and Cu concentrations are used in conjunction with dissolved Mn values to identify hydrothermal venting at several sites along the Mid‐Atlantic Ridge (MAR). In dispersed hydrothermal plumes, as defined by ...
    • Iron in hot DA white dwarfs 

      Vennes, Stéphane; Chayer, Pierre; Dupuis, Jean François; Lanz, Thierry M. (2006-12-01)
      We present a study of the iron abundance pattern in hot, hydrogen-rich (DA) white dwarfs. The study is based on new and archival far-ultraviolet spectroscopy of a sample of white dwarfs in the temperature range 30,000 K ≲ ...
    • Island life and isolation: The population genetics of Pacific Wrens on the North Pacific Rim 

      Pruett, Christin L.; Ricono, Angela; Spern, Cory; Winker., Kevin S. (2017-02-08)
      Conservation of intraspecific variation is a growing focus of conservation biology. Island populations can make up a large portion of the variation of widespread species, as they are often isolated and exhibit differences ...
    • Isotopic composition of solar energetic particle events measured by Advanced Composition Explorer/ULEIS 

      Dwyer, Joseph R.; Mason, Glenn M.; Mazur, Joseph E.; Gold, Robert E.; Krimigis, Stamatios M.; Möbius, Eberhard S.; Popecki, Mark A. (2001-12-10)
      Since its 1997 August launch, the Ultra Low Energy Isotope Spectrometer (ULEIS) on board the Advanced Composition Explorer (ACE) has observed a large number of solar energetic particle (SEP) events in the 0.4-3 MeV nucleonˉ¹ ...
    • An iterative algorithm for layered optical remote sensing reflectance modeling of natural waters with depth dependent aquatic constituent concentrations 

      Bostater, Charles R.; Huddleston, Lisa H.; Semmler, Carrie; Mieles, John (2003-02-14)
      This paper describes the radiative transfer of the sun's electromagnetic energy utilizing a solution to the two-flow irradiance equations that generates fast and accurate estimates of light distributions in any layered ...
    • J/ψ and ψ (2S) production in pp collisions at √s = 7 TeV 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Vodopiyanov, Igor (2012-02-07)
      A measurement of the J/ψ and ψ(2S) production cross sections in pp collisions at √s = 7TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 pb−1. Using a fit ...
    • J/ψ production in sNN=200GeV Cu+Cu collisions 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A.; Hohlmann, Marcus; Rembeczki, S.; Dehmelt, K. (2008-09-18)
      Yields for J=c production in Cu þ Cu collisions at ffiffiffiffiffiffiffiffi sNN p ¼ 200 GeV have been measured over the rapidity range jyj < 2:2 and compared with results in p þ p and Au þ Au collisions at the same ...
    • J/ψ production in sNN=200GeV Cu+Cu collisions 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2008-09-18)
      Yields for J/ψ production in Cu+Cu collisions at sNN=200GeV have been measured over the rapidity range |y|<2.2 and compared with results in p+p and Au+Au collisions at the same energy. The Cu+Cu data offer greatly improved ...
    • J/ψ Production versus transverse momentum and rapidity in p+p collisions at s=200GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, Gyöngyi; Baksay, László A.; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, S. (2007-06-08)
      J/ψ production in p+p collisions at s=200GeV has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over a rapidity range of -2.2<y<2.2 and a transverse momentum range of 0<pT<9GeV/c. The ...
    • J/ψ Production versus transverse momentum and rapidity in p+p collisions at s=200GeV 

      Adare, Andrew Marshall; Afanasiev, Sergey V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Baksay, László A.; Hohlmann, Marcus; Rembeczki, S.; Dehmelt, K.; Baksay, Gyöngyi (2007-06-08)
      J= production in p p collisions at s p 200 GeV has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over a rapidity range of 2:2 <y< 2:2 and a transverse momentum range of 0 < pT ...
    • J/ψ suppression at forward rapidity in Au + Au collisions at √sNN=200 GeV 

      Baksay, Gyöngyi; Baksay, László A; Hohlmann, Marcus; Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki; Al-Bataineh, H.; Alexander, John M. (2011-11-21)
      Heavy quarkonia are observed to be suppressed in relativistic heavy-ion collisions relative to their production in p+p collisions scaled by the number of binary collisions. In order to determine if this suppression is ...
    • Jet production rates in association with W and Z bosons in pp collisions at √s = 7 TeV 

      Chatrchyan, S.; Khachatryan, Vardan; Sirunyan, A.M.; Tumasyan, A.R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, Himali; Vodopiyanov, Igor (2012-01-03)
      Measurements of jet production rates in association with W and Z bosons for jet transverse momenta above 30 GeV are reported, using a sample of proton-proton collision events recorded by CMS at √s = 7TeV , corresponding ...
    • Joint source-channel decoding for MPEG-2 video transmission 

      Yin, Liuguo; Chen, Weigang; Lu, Jianhua; Chen, Chang Wen (2004-10-25)
      Joint source-channel coding schemes have been proven to be effective ways for reliable multimedia communications. In this paper, a joint source-channel decoding (JSCD) scheme that combines the hidden Markov source (HMS) ...
    • Joint-transform correlator architecture for wavelet feature extraction 

      Kozaitis, S.P.; Getbehead, Mark A.; Foor, Wesley E. (1997-07-01)
      A version of an image consisting of multiple wavelet scales allows for more flexible feature extraction when compared to the use of one wavelet scale. We proposed an imaging system based on a multiple-input joint-transform ...