Now showing items 722-741 of 1773

    • K2ᅠReveals Pulsed Accretion Driven by the 2 Myr Old Hot Jupiter CI Tau b 

      Biddle, Lauren I.; Johns-Krull, Christopher M.; Llama, Joe; Prato, Lisa; Skiff, Brian A. (2018)
      CIᅠTau is a young (~2 Myr) classical T Tauri star located in the Taurus star-forming region. Radial velocity observations indicate it hosts a Jupiter-sized planet with an orbital period of approximately 9 days. In this ...
    • Keeping the rhythm: light/dark cycles during postharvest storage preserve the tissue integrity and nutritional content of leafy plants 

      Liu, John D.; Goodspeed, Danielle; Sheng, Zhengji; Li, Baohua; Yang, Yiran; Kliebenstein, Daniel J.; Braam, Janet (2015)
      Background: The modular body structure of plants enables detached plant organs, such as postharvest fruits and vegetables, to maintain active responsiveness to environmental stimuli, including daily cycles of light and ...
    • Kinetic energy oscillations in annular regions of ultracold neutral plasmas 

      Laha, S.; Chen, Y.C.; Gupta, P.; Simien, C.E.; Martinez, Y.N.; Mickelson, P.G.; Nagel, S.B.; Killian, T.C. (2006)
    • Knot Concordance and Homology Cobordism 

      Cochran, Tim D.; Franklin, Bridget D.; Hedden, Matthew; Horn, Peter D. (2013-06)
      We consider the question: “If the zero-framed surgeries on two oriented knots in S3 are Z-homology cobordant, preserving the homology class of the positive meridians, are the knots themselves concordant?” We show that this ...
    • Kondo Destruction and Quantum Criticality in Kondo Lattice Systems 

      Si, Qimiao; Pixley, Jedediah H.; Nica, Emilian; Yamamoto, Seiji J.; Goswami, Pallab; Yu, Rong; Kirchner, Stefan (2014)
      Considerable efforts have been made in recent years to theoretically understand quantum phase transitions in Kondo lattice systems. A particular focus is on Kondo destruction, which leads to quantum criticality that goes ...
    • Kondo Destruction and Valence Fluctuations in an Anderson Model 

      Pixley, J.H.; Kirchner, Stefan; Ingersent, Kevin; Si, Qimiao (2012)
      Unconventional quantum criticality in heavy-fermion systems has been extensively analyzed in terms of a critical destruction of the Kondo effect. Motivated by a recent demonstration of quantum criticality in a mixed-valent ...
    • Kondo hybridization and quantum criticality in β−YbAlB4 by laser ARPES 

      Bareille, Cédric; Suzuki, Shintaro; Nakayama, Mitsuhiro; Kuroda, Kenta; Nevidomskyy, Andriy H.; Matsumoto, Yosuke; Nakatsuji, Satoru; Kondo, Takeshi; Shin, Shik (2018)
      We report an angle-resolved photoemission (ARPES) study of β−YbAlB4, which is known to harbor unconventional quantum criticality (QC) without any tuning. We directly observe a quasiparticle peak (QP) emerging from ...
    • Kondo Insulator to Semimetal Transformation Tuned by Spin-Orbit Coupling 

      Dzsaber, S.; Prochaska, L.; Sidorenko, A.; Eguchi, G.; Svagera, R.; Waas, M.; Prokofiev, A.; Si, Q.; Paschen, S. (2017)
      Recent theoretical studies of topologically nontrivial electronic states in Kondo insulators have pointed to the importance of spin-orbit coupling (SOC) for stabilizing these states. However, systematic experimental studies ...
    • Lactose repressor hinge domain independently binds DNA 

      Xu, Joseph S.; Hewitt, Madeleine N.; Gulati, Jaskeerat S.; Cruz, Matthew A.; Zhan, Hongli; Liu, Shirley; Matthews, Kathleen S. (2018)
      The short 8–10 amino acid “hinge” sequence in lactose repressor (LacI), present in other LacI/GalR family members, links DNA and inducer‐binding domains. Structural studies of full‐length or truncated LacI‐operator DNA ...
    • Landau level crossing in a spin-orbit coupled two-dimensional electron gas 

      Wu, Xing-Jun; Li, Ting-Xin; Zhang, Chi; Du, Rui-Rui (2015)
      We have studied experimentally theᅠLandau levelᅠ(LL) spectrum of a two-dimensionalᅠelectron gasᅠ(2DEG)ᅠin an In0.53Ga0.47As/InPᅠquantum wellᅠstructure by means of low-temperature magneto-transport coincidence measurement ...
    • Large-amplitude electric fields in the inner magnetosphere: Van Allen Probes observations of subauroral polarization streams 

      Califf, S.; Li, X.; Wolf, R.A.; Zhao, H.; Jaynes, A.N.; Wilder, F.D.; Malaspina, D.M.; Redmon, R. (2016)
      The subauroral polarization stream (SAPS) is an important magnetosphere-ionosphere (MI) coupling phenomenon that impacts a range of particle populations in the inner magnetosphere. SAPS studies often emphasize ionospheric ...
    • Large-Amplitude Variations in Carbon Cycling and Terrestrial Weathering during the Latest Paleocene and Earliest Eocene: The Record at Mead Stream, New Zealand 

      Slotnick, Benjamin S.; Dickens, Gerald R.; Nicolo, Micah J.; Hollis, Christopher J.; Crampton, James S.; Zachos, James C.; Sluijs, Appy (2012)
      The late Paleocene to early Eocene was marked by major changes in Earth surface temperature and carbon cycling. This included at least two, and probably more, geologically brief (<200-k.yr.) intervals of extreme warming, ...
    • Large-scale current systems and ground magnetic disturbance during deep substorm injections 

      Yang, J.; Toffoletto, F.R.; Wolf, R.A.; Sazykin, S.; Ontiveros, P.A.; Weygand, J.M. (2012)
      We present a detailed analysis of the large-scale current systems and their effects on the ground magnetic field disturbance for an idealized substorm event simulated with the equilibrium version of the Rice Convection ...
    • Large-scale tectonic cycles in Europe revealed by distinct Pb isotope provinces 

      Blichert-Toft, Janne; Delile, Hugo; Lee, Cin-Ty; Stos-Gale, Zofia; Billstrӧm, Kjell; Andersen, Tom; Hannu, Huhma; Albarède, Francis (2016)
      Lead isotopic systematics of U-poor minerals, such as sulfides and feldspars, can provide unique insights into the origin and evolution of continents because these minerals “freeze in” the Pb isotopic composition of the ...
    • Laser Pulse Duration Is Critical For the Generation of Plasmonic Nanobubbles 

      Lukianova-Hleb, Ekaterina Y.; Volkov, Alexey N.; Lapotko, Dmitri O. (2014)
      Plasmonic nanobubbles (PNBs) are transient vapor nanobubbles generated in liquid around laser-overheated plasmonic nanoparticles. Unlike plasmonic nanoparticles, PNBs’ properties are still largely unknown due to their ...
    • Laser-cooling limits and single-ion spectroscopy 

      Wineland, D.J.; Itano, Wayne M.; Bergquist, J.C.; Hulet, Randall G. (1987)
      The limitations to the achievement of low kinetic energies for laser cooling of single ions confined in electromagnetic traps are discussed. Sideband cooling of an ion in an rf (Paul) trap is reexamined including the effects ...
    • Laser-free slow atom source 

      Ghaffari, B.; Gerton, J.M.; McAlexander, W.I.; Strecker, K.E.; Homan, D.M.; Hulet, R.G. (1999)
      A slow atom source, which does not rely on lasers, has been developed and characterized. The device, acting as an atomic low-pass velocity filter, utilizes permanent magnets to passively select the slow atoms present in a ...
    • Laser-induced porous graphene films from commercial polymers 

      Lin, Jian; Peng, Zhiwei; Liu, Yuanyue; Ruiz-Zepeda, Francisco; Ye, Ruquan; Samuel, Errol L.G.; Yacaman, Miguel Jose; Yakobson, Boris I.; Tour, James M. (2014)
      The cost effective synthesis and patterning of carbon nanomaterials is a challenge in electronic and energy storage devices. Here we report a one-step, scalable approach for producing and patterning porous graphene films ...
    • Late Holocene climate change recorded in proxy records from a Bransfield Basin sediment core, Antarctic Peninsula 

      Barnard, Alex; Wellner, Julia S.; Anderson, John B. (2014)
      The glacimarine environment of the Antarctic Peninsula region is one of the fastest warming places on Earth today, but details of changes in the recent past remain unknown. Large distances and widespread variability separate ...
    • Learning physics of living systems from Dictyostelium 

      Levine, Herbert (2014)
      Unlike a new generation of scientists that are being trained directly to work on the physics of living systems, most of us more senior members of the community had to find our way from other research areas. We all have our ...