Now showing items 1034-1053 of 1674

    • Phenotypic variance predicts symbiont population densities in corals: A modeling approach 

      van Woesik, Robert; Shiroma, Kazuyo; Köksal, Semen (2010-02-12)
      We test whether the phenotypic variance of symbionts (Symbiodinium) in corals is closely related with the capacity of corals to acclimatize to increasing seawater temperatures. Moreover, we assess whether more specialist ...
    • Philos-type oscillation criteria for second order half-linear dynamic equations on time scales 

      Agarwal, Ravi P.; O'Regan, Donal; Saker, Samir H. (2007)
      In this paper we establish some oscillation theorems for the second order half-linear dynamic equation (r(t)(x Δ(t) γ) Δ + p(t)x γ(t) = 0, ∈ [a,b], on time scales. Special cases of our results include some well-known ...
    • Phospho1 deficiency transiently modifies bone architecture yet produces consistent modification in osteocyte differentiation and vascular porosity with ageing 

      Javaheri, Behzad; Carriero, Alessandra; Staines, Katherine Ann Nn; Chang, Y. M.; Houston, D. A.; Oldknow, Karla J.; Millán, José Luis; Kazeruni, Bassir N.; Salmon, Phil L.; Shefelbine, Sandra J. (2015-12-01)
      PHOSPHO1 is one of principal proteins involved in initiating bone matrix mineralisation. Recent studies have found that Phospho1 KO mice ( Phospho1-R74X) display multiple skeletal abnormalities with spontaneous fractures, ...
    • Photographic survey of benthos provides insights into the Antarctic fish fauna from the Marguerite Bay slope and the Amundsen Sea 

      Eastman, Joseph T.; Amsler, Margaret O.; Aronson, Richard B.; Thatje, Sven; McClintock, James B.; Vos, Stephanie C.; Kaeli, Jeffrey W.; Singh, Hanumant; Mesa, Mario La (2012-10-09)
      We reviewed photographic images of fishes from depths of 381–2282 m in Marguerite Bay and 405–2007 m in the Amundsen Sea. Marguerite Bay fishes were 33% notothenioids and 67% non-notothenioids. Channichthyids (47%) and ...
    • Photon-hadron jet correlations in p+p and Au+Au collisions at √sNN = 200 GeV 

      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. (2009-08-31)
      We report the observation at the Relativistic Heavy Ion Collider of suppression of back-to-back correlations in the direct photon+jet channel in Au+Au relative to p+p collisions. Two-particle correlations of direct photon ...
    • The physical origin of negative superhumps in cataclysmic variables 

      Wood, Matt A.; Burke, Christopher J. (2007-06-01)
      It has been suspected for over 20 years that the observed negative superhumps in cataclysmic variables are due to the retrograde precession of a tilted disk. We present new smooth particle hydrodynamics simulation results ...
    • The physical properties of double degenerate common proper motion binaries 

      Sión, Edward M.; Oswalt, T. D.; Liebert, James W.; Hintzen, Paul M N (1991-04)
      We present spectral types and spectrophotometry for 21 double degenerate (DD) common proper motion binaries and provide estimates of their colors, absolute visual and bolometric magnitudes, and cooling ages. The most typical ...
    • Physics first 

      Alonso, Marcelo Fernandez (2003-12)
      It is true that now most biology courses begin with the DNA molecule, and many chemistry courses introduce the notion of electronic orbitals in atoms and molecules, topics for which students are not well prepared, since ...
    • Pitch angle scattering in the outer heliosheath and formation of the Interstellar Boundary EXplorer ribbon 

      Gamayunov, Konstantin V.; Zhang, Ming; Rassoul, Hamid K. (2010-12-06)
      The dominant and unexpected feature in the first Interstellar Boundary EXplorer (IBEX) maps is a ribbon of the enhanced energetic neutral atom (ENA) emissions. Presenting the first results from IBEX,McComas et al. identified ...
    • Pitch angle scattering in the outer heliosheath and formation of the interstellar boundary explorer ribbon 

      Gamayunov, Konstantin V.; Zhang, Ming; Rassoul, Hamid K. (2010-12-06)
      The dominant and unexpected feature in the first Interstellar Boundary EXplorer (IBEX) maps is a ribbon of the enhanced energetic neutral atom (ENA) emissions. Presenting the first results from IBEX, McComas et al. identified ...
    • A pixel to pixel hyperspectral synthetic image model inter-comparison study 

      Bostater, Charles R.; Bassetti, Luce (2006-10-06)
      The purpose of this paper is to present simulation results comparing e a Monte Carlo Hyperspectral Simulation Model (MCHSIM) which generates synthetic images with realistic water wave surface to an iterative layered radiative ...
    • Pixel-registered image fusion 

      Cofer, Rufus H.; Kozaitis, S.P. (1995-07-05)
      One of the highest potential uses of image fusion is that of recognition of critical targets. The continuing image fusion question then is how to make optimal use of the often disparate forms of encountered image detail ...
    • PKS 0736+017: A striking optical flare and intriguing microvariability 

      Clements, Sandra D.; Jenks, A.; Torres, Y. (2003-07)
      The compact, flat-spectrum radio quasar PKS 0736+017 was monitored for microvariability on 10 nights in early 2002 using the 0.9 m SARA telescope on Kitt Peak in Arizona. On January 14, PKS 0736+017 flared dramatically, ...
    • Planet hunters: A transiting circumbinary planet in a quadruple star system 

      Schwamb, Megan E.; Orosz, Jerome A.; Carter, Joshua A.; Welsh, William F.; Fischer, Debra A.; Torres, Guillermo; Howard, Andrew W.; Crepp, Justin R.; Keel, William C.; Lintott, Chris J. (2013-05-10)
      We report the discovery and confirmation of a transiting circumbinary planet (PH1b) around KIC 4862625, an eclipsing binary in the Kepler field. The planet was discovered by volunteers searching the first six Quarters ...
    • Planetary candidates observed by Kepler iv: Planet sample from Q1-Q8 (22 months) 

      Ragozzine, Darin A.; Burke, Christopher J.; Bryson, Stephen T.; Mullally, Fergal R.; Rowe, Jason F.; Christiansen, Jessie L.; Thompson, Susan E.; Coughlin, Jeffrey L.; Haas, Michael R.; Batalha, Natalie M. (2014-01-10)
      We provide updates to the Kepler planet candidate sample based upon nearly two years of high-precision photometry (i.e., Q1-Q8). From an initial list of nearly 13,400 threshold crossing events, 480 new host stars are ...
    • PLANKTONIC FORAMINIFERA COLLECTED BY THE R/V MELVILLE (1972) IN THE SOUTHWEST ATLANTIC 

      Lena, Haydee; Watanabe, Silvia; Souto, Sara (1981)
      The planktonic foraminiferal fauna was studied from 186 samples collected by the R/V Melville in the Southwest Atlantic Ocean during 1972. The samples were collected in the surface layer (horizontal tows) and throughout ...
    • Plant pigment types, distributions, and influences on shallow water submerged aquatic vegetation mapping 

      Hall, Carlton R.; Bostater, Charles R.; Virnstein, Robert W. (2004-11)
      Development of robust protocols for use in mapping shallow water habitats using hyperspectral imagery requires knowledge of absorbing and scattering features present in the environment. These include, but are not limited ...
    • Platforms for hyperspectral imaging, in-situ optical and acoustical imaging in urbanized regions 

      Bostater, Charles R.; Oney, Taylor (2016-09-26)
      Hyperspectral measurements of the water surface of urban coastal waters are presented. Oblique bidirectional reflectance factor imagery was acquired made in a turbid coastal sub estuary of the Indian River Lagoon, Florida ...
    • Polarimetry and the high-energy emission mechanisms in quasar jets: the case of PKS 1136-135 

      Cara, Mihai; Perlman, Eric S.; Uchiyama, Yasunobu; Cheung, Chi C.; Coppi, Paolo S.; Georganopoulos, Markos; Worrall, Diana M.; Birkinshaw, Mark; Sparks, William B.; Marshall, Herman L. (2013-08-20)
      Since the discovery of kiloparsec-scale X-ray emission from quasar jets, the physical processes responsible for their high-energy emission have been poorly defined. A number of mechanisms are under active debate, including ...
    • Polarized mid-infrared synchrotron emission in the core of Cygnus A 

      López Rodríguez, Enrique; Packham, Christopher C.; Tadhunter, Clive N.; Mason, Rachel E.; Perlman, Eric S.; Alonso-Herrero, Almudena; Ramos Almeida, Cristina; Ichikawa, Kohei; Levenson, Nancy A.; Rodríguez-Espinosa, José Miguel (2014-10-01)
      We present high-angular (∼0". 4) resolution mid-infrared (MIR) polarimetric observations in the 8.7μm and 11.6μm filters of Cygnus A using CanariCam on the 10.4 m Gran Telescopio CANARIAS. A highly polarized nucleus ...