Now showing items 337-356 of 965

  • Fabry-Perot filters used for optical preprocessing 

    Indebetouw, G.; Case, S. K. (Optical Society of America, 1981-10)
    A Fabry-Perot etalon placed in the object plane of a coherent optical processing system can be used as a variable bandpass preprocessing filter. Use of this filter leads to improved correlation signals in a matched spatial ...
  • factorization of scattering matrices due to partitioning of potentials in one-dimensional Schrodinger-type equations 

    Aktosun, T.; Klaus, M.; vanderMee, C. (AIP Publishing, 1996-12)
    The one-dimensional Schrodinger equation and two of its generalizations are considered, as they arise in quantum mechanics, wave propagation in a nonhomogeneous medium, and wave propagation in a nonconservative medium where ...
  • far-infrared fine-structure line diagnostics of ultraluminous infrared galaxies 

    Farrah, D.; Lebouteiller, V.; Spoon, H. W. W.; Bernard-Salas, J.; Pearson, C.; Rigopoulou, D.; Smith, H. A.; Gonzalez-Alfonso, E.; Clements, D. L.; Efstathiou, A.; Cormier, D.; Afonso, J.; Petty, S. M.; Harris, K.; Hurley, P.; Borys, C.; Verma, A.; Cooray, A.; Salvatelli, V. (IOP Publishing Ltd., 2013-10)
    We present Herschel observations of 6 fine-structure lines in 25 ultraluminous infrared galaxies at z < 0.27. The lines, [O III]52 mu m, [N III] 57 mu m, [O I]63 mu m, [N II]122 mu m, [O I]145 mu m, and [C II]158 mu m, are ...
  • The Fate of an Actor on the Ecological Stage of the Evolutionary Theater 

    Cairns, John (Virginia Tech, 2014-01-22)
    Humankind, is just one of the 30 million species on the _stage or the planet. However, humans are markedly different from the other actors that are now or have previously been on the stage. Humans, in fact, affect the ...
  • Female, but Not Male, Tropical Sparrows Respond More Strongly to the Local Song Dialect: Implications for Population Divergence 

    Danner, J. E.; Danner, R. M.; Bonier, F.; Martin, P. R.; Small, T. W.; Moore, I. T. (University of Chicago Press, 2011-07)
    In addition to the observed high diversity of species in the tropics, divergence among populations of the same species exists over short geographic distances in both phenotypic traits and neutral genetic markers. Divergence ...
  • Ferroelastic phase in SrBi2Ta2O9 and study of the ferroelectric phase-transition dynamics 

    Kamba, S.; Pokorny, J.; Porokhonskyy, V.; Petzelt, J.; Moret, M. P.; Garg, A.; Barber, Z. H.; Zallen, R. (AIP Publishing, 2002-08)
    Polarized microscope observation of ferroelastic domains in a SrBi2Ta2O9 (SBT) single crystal reveals the presence of domains up to T(c1)similar or equal to770 K, which supports the ferroelasticity and Amam symmetry of the ...
  • Field-induced motion of ferrofluid droplets through immiscible viscous media 

    Afkhami, S.; Renardy, Y.; Renardy, M.; Riffle, J. S.; St Pierre, T. (Cambridge University Press, 2008-09)
    The motion of a hydrophobic ferrofluid droplet placed in a viscous medium and driven by an externally applied magnetic field is investigated numerically in an axisymmetric geometry. Initially, the drop is spherical and ...
  • Field-induced vacancy localization in a driven lattice gas: Scaling of steady states 

    Thies, M.; Schmittmann, B. (American Physical Society, 2000-01)
    With the help of Monte Carlo simulations and a mean-field theory, we investigate the ordered steady-state structures resulting from the motion of a single vacancy on a periodic lattice which is filled with two species of ...
  • Fine Structure of Dark Energy and New Physics 

    Jejjala, V.; Kavic, M.; Minic, D. (Hindawi Publishing Corporation, 2007)
    Following our recent work on the cosmological constant problem, in this letter we make a specific proposal regarding the fine structure (i.e., the spectrum) of dark energy. The proposal is motivated by a deep analogy between ...
  • finger formation in a driven diffusive system 

    Boal, D. H.; Schmittmann, B.; Zia, R. K. P. (American Physical Society, 1991-05)
    A driven diffusive lattice gas is studied in a rectangular geometry: particles are fed in at one side and extracted at the other, after being swept through the system by a uniform driving field. Being periodic in the ...
  • Finite-basis many-electron approximation to the Anderson model 

    Mancini, J. D.; Bowen, S. P.; Zhou, Y. (American Physical Society, 1990-03)
    A relatively simple many-electron basis is used to construct a matrix for the Anderson impurity Hamiltonian. The basis states are each valid in the thermodynamic limit. The approximate ground-state energy compares well ...
  • First measurement of the muon antineutrino double-differential charged-current quasielastic cross section 

    Aguilar-Arevalo, A. A.; Brown, B. C.; Bugel, L.; Cheng, G.; Church, E. D.; Conrad, J. M.; Dharmapalan, R.; Djurcic, Z.; Finley, D. A.; Ford, R.; Garcia, F. G.; Garvey, G. T.; Grange, J.; Huelsnitz, W.; Ignarra, C.; Imlay, R.; Johnson, R. A.; Karagiorgi, G.; Katori, T.; Kobilarcik, T.; Louis, W. C.; Mariani, C.; Marsh, W.; Mills, G. B.; Mirabal, J.; Moore, C. D.; Mousseau, J.; Nienaber, P.; Osmanov, B.; Pavlovic, Z.; Perevalov, D.; Polly, C. C.; Ray, H.; Roe, B. P.; Russell, A. D.; Shaevitz, M. H.; Spitz, J.; Stancu, I.; Tayloe, R.; Van de Water, R. G.; Wascko, M. O.; White, D. H.; Wickremasinghe, D. A.; Zeller, G. P.; Zimmerman, E. D.; MiniBoo, N. E. Collaboration (American Physical Society, 2013-08-02)
    The largest sample ever recorded of (nu) over bar (mu) charged-current quasielastic (CCQE, (nu) over bar (mu) + p -> mu(+) + n) candidate events is used to produce the minimally model-dependent, flux-integrated double-differential ...
  • First Measurement of the Neutron beta Asymmetry with Ultracold Neutrons 

    Pattie, R. W.; Anaya, J.; Back, H. O.; Boissevain, J. G.; Bowles, T. J.; Broussard, L. J.; Carr, R.; Clark, D. J.; Currie, S.; Du, S.; Filippone, B. W.; Geltenbort, P.; Garcia, A.; Hawari, A.; Hickerson, K. P.; Hill, R.; Hino, M.; Hoedl, S. A.; Hogan, G. E.; Holley, A. T.; Ito, T. M.; Kawai, T.; Kirch, K.; Kitagaki, S.; Lamoreaux, S. K.; Liu, C. Y.; Liu, J.; Makela, M.; Mammei, R. R.; Martin, J. W.; Melconian, D.; Meier, N.; Mendenhall, M. P.; Morris, C. L.; Mortensen, R.; Pichlmaier, A.; Pitt, M. L.; Plaster, B.; Ramsey, J. C.; Rios, R.; Sabourov, K.; Sallaska, A. L.; Saunders, A.; Schmid, R.; Seestrom, S.; Servicky, C.; Sjue, S. K. L.; Smith, D.; Sondheim, W. E.; Tatar, E.; Teasdale, W.; Terai, C.; Tipton, B.; Utsuro, M.; Vogelaar, R. B.; Wehring, B. W.; Xu, Y. P.; Young, A. R.; Yuan, J.; Ucna Collaboration (American Physical Society, 2009-01-09)
    We report the first measurement of an angular correlation parameter in neutron beta decay using polarized ultracold neutrons (UCN). We utilize UCN with energies below about 200 neV, which we guide and store for similar to ...
  • First test of Lorentz violation with a reactor-based antineutrino experiment 

    Abe, Y.; Aberle, C.; dos Anjos, J. C.; Bergevin, M.; Bernstein, A.; Bezerra, T. J. C.; Bezrukhov, L.; Blucher, E.; Bowden, N. S.; Buck, C.; Busenitz, J.; Cabrera, A.; Caden, E.; Camilleri, L.; Carr, R.; Cerrada, M.; Chang, P. J.; Chimenti, P.; Classen, T.; Collin, A. P.; Conover, E.; Conrad, J. M.; Crespo-Anadon, J. I.; Crum, K.; Cucoanes, A.; D'Agostino, M. V.; Damon, E.; Dawson, J. V.; Dazeley, S.; Dietrich, D.; Djurcic, Z.; Dracos, M.; Durand, V.; Ebert, J.; Efremenko, Y.; Elnimr, M.; Erickson, A.; Fallot, M.; Fechner, M.; von Feilitzsch, F.; Felde, J.; Fischer, V.; Franco, D.; Franke, A. J.; Franke, M.; Furuta, H.; Gama, R.; Gil-Botella, I.; Giot, L.; Goger-Neff, M.; Gonzalez, L. F. G.; Goodman, M. C.; Goon, J. T.; Greiner, D.; Haag, N.; Habib, S.; Hagner, C.; Hara, T.; Hartmann, F. X.; Haser, J.; Hatzikoutelis, A.; Hayakawa, T.; Hofmann, M.; Horton-Smith, G. A.; Ishitsuka, M.; Jochum, J.; Jollet, C.; Jones, C. L.; Kaether, F.; Kalousis, L. N.; Kamyshkov, Y.; Kaplan, D. M.; Katori, T.; Kawasaki, T.; Keefer, G.; Kemp, E.; de Kerret, H.; Konno, T.; Kryn, D.; Kuze, M.; Lachenmaier, T.; Lane, C. E.; Lasserre, T.; Letourneau, A.; Lhuillier, D.; Lima, H. P.; Lindner, M.; Lopez-Castano, J. M.; LoSecco, J. M.; Lubsandorzhiev, B. K.; Lucht, S.; McKee, D.; Maeda, J.; Maesano, C. N.; Mariani, C.; Maricic, J.; Martino, J.; Matsubara, T.; Mention, G.; Meregaglia, A.; Meyer, M.; Miletic, T.; Milincic, R.; Miyata, H.; Mueller, T. A.; Nagasaka, Y.; Nakajima, K.; Novella, P.; Obolensky, M.; Oberauer, L.; Onillon, A.; Osborn, A.; Ostrovskiy, I.; Palomares, C.; Pepe, I. M.; Perasso, S.; Perrin, P.; Pfahler, P.; Porta, A.; Potzel, W.; Pronost, G.; Reichenbacher, J.; Reinhold, B.; Remoto, A.; Rohling, M.; Roncin, R.; Roth, S.; Rybolt, B.; Sakamoto, Y.; Santorelli, R.; Sato, F.; Schonert, S.; Schoppmann, S.; Schwetz, T.; Shaevitz, M. H.; Shrestha, D.; Sida, J. L.; Sinev, V.; Skorokhvatov, M.; Smith, E.; Spitz, J.; Stahl, A.; Stancu, I.; Stokes, L. F. F.; Strait, M.; Stuken, A.; Suekane, F.; Sukhotin, S.; Sumiyoshi, T.; Sun, Y.; Terao, K.; Tonazzo, A.; Toups, M.; Thi, H. H. T.; Valdiviesso, G.; Veyssiere, C.; Wagner, S.; Watanabe, H.; White, B.; Wiebusch, C.; Winslow, L.; Worcester, M.; Wurm, M.; Yanovitch, E.; Yermia, F.; Zimmer, V.; Double Chooz, Collaboration (American Physical Society, 2012-12-28)
    We present a search for Lorentz violation with 8249 candidate electron antineutrino events taken by the Double Chooz experiment in 227.9 live days of running. This analysis, featuring a search for a sidereal time dependence ...
  • First-principles study of a single-molecule magnet Mn-12 monolayer on the Au(111) surface 

    Barraza-Lopez, S.; Avery, M. C.; Park, K. (American Physical Society, 2007-12)
    The electronic structure of a monolayer of single-molecule magnets Mn-12 on a Au(111) surface is studied using spin-polarized density-functional theory. The Mn-12 molecules are oriented such that the magnetic easy axis is ...
  • First-principles study of several hypothetical silica framework structures 

    Teter, D. M.; Gibbs, G. V.; Boisen, M. B.; Allan, D. C.; Teter, M. P. (American Physical Society, 1995-09-15)
    Several hypothetical silica structures have been generated using a simulated-annealing strategy with an ab initio based covalent-bonding potential. First-principles total-energy pseudopotential methods have been used to ...
  • Fish and Phytoplankton Exhibit Contrasting Temporal Species Abundance Patterns in a Dynamic North Temperate Lake 

    Hansen, Gretchen J. A.; Carey, Cayelan C. (PLoS ONE, 2015-02-04)
    Temporal patterns of species abundance, although less well-studied than spatial patterns, provide valuable insight to the processes governing community assembly. We compared temporal abundance distributions of two communities, ...
  • 'Fixed-axis' magnetic orientation by an amphibian: non-shoreward-directed compass orientation, misdirected homing or positioning a magnetite-based map detector in a consistent alignment relative to the magnetic field? 

    Phillips, J. B.; Borland, S. C.; Freake, M. J.; Brassart, J.; Kirschvink, J. L. (Company of Biologists Ltd., 2002-12)
    Experiments were carried out to investigate the earlier prediction that prolonged exposure to long-wavelength (>500 nm) light would eliminate homing orientation by male Eastern red-spotted newts Notophthalmus viridescens. ...
  • Fluid-magnet universality: Renormalization-group analysis of φ5 operators 

    Nicoll, J. F.; Zia, R. K. P. (American Physical Society, 1981-06)
    The question of a possible difference between the universality classes of fluids and Ising-like magnets is addressed by perturbation theory and the renormalization group. The most dangerous possibility is that of an φ5 ...
  • Fluorinert as a pressure-transmitting medium for high-pressure diffraction studies 

    Varga, T.; Wilkinson, A. P.; Angel, R. J. (AIP Publishing, 2003-10)
    Fluorinert is a liquid pressure-transmitting medium that is widely used in high-pressure diffraction work. A systematic study of five different fluorinerts was carried out using single-crystal x-ray diffraction in a ...