Now showing items 5966-5985 of 18256

    • Flexoelectricity in Nematic and Smectic-A Liquid Crystals 

      Prost, Jacques; Pershan, Peter S. (American Institute of Physics, 1976)
      Flexoelectric effects are observed in both the nematic and smectic‐A phases of p‐butoxybenzal‐p‐(\(\beta\)‐methylbutyl) aniline (BBMBA) and p‐cyano‐benzylidine‐p‐octyloxyaniline (CBOOA). This is the first reported observation ...
    • Flooded Dark Matter and S level rise 

      Randall, Lisa; Scholtz, Jakub; Unwin, James (Springer Science + Business Media, 2016)
      Most dark matter models set the dark matter relic density by some interaction with Standard Model particles. Such models generally assume the existence of Standard Model particles early on, with the dark matter relic density ...
    • Floral Evolution: Dramatic Size Change was Recent and Rapid in the World's Largest Flowers 

      Davis, Charles Cavender (Elsevier, 2008)
      Recent studies clarifying the closest relatives of the world's largest flowers, Rafflesiaceae, whose floral diameters range from ∼11 to ∼100 cm, indicated that they evolved from tiny-flowered ancestors in a burst of floral ...
    • Floral Symmetry Genes and the Origin and Maintenance of Zygomorphy in a Plant-pollinator Mutualism 

      Zhang, Wenheng; Kramer, Elena M.; Davis, Charles Cavender (National Academy of Sciences, 2010)
      The evolution of floral zygomorphy is an important innovation in flowering plants and is thought to arise principally from specialization on various insect pollinators. Floral morphology of neotropical Malpighiaceae is ...
    • Flow Batteries: Alkaline Benzoquinone Aqueous Flow Battery for Large-Scale Storage of Electrical Energy 

      Yang, Zhengjin; Tong, Liuchuan; Tabor, Daniel; Beh, Eugene S.; Goulet, Marc-Antoni; De Porcellinis, Diana; Aspuru-Guzik, Alan; Gordon, Roy Gerald; Aziz, Michael J. (Wiley-Blackwell, 2018)
      We introduce an aqueous flow battery based on low-cost, non-flammable, non-corrosive and Earth-abundant elements. During charging, electrons are stored in a concentrated water solution of 2,5-dihydroxy-1,4-benzoquinone ...
    • Flow-induced protein kinase A–CREB pathway acts via BMP signaling to promote HSC emergence 

      Kim, Peter Geon; Nakano, Haruko; Das, Partha P.; Chen, Michael J.; Rowe, R. Grant; Chou, Stephanie S.; Ross, Samantha J.; Sakamoto, Kathleen M.; Zon, Leonard I.; Schlaeger, Thorsten M.; Orkin, Stuart H.; Nakano, Atsushi; Daley, George Q. (The Rockefeller University Press, 2015)
      Fluid shear stress promotes the emergence of hematopoietic stem cells (HSCs) in the aorta–gonad–mesonephros (AGM) of the developing mouse embryo. We determined that the AGM is enriched for expression of targets of protein ...
    • FlowCode: Multi-site data exchange over wireless ad-hoc networks using network coding 

      Kung, H. T.; Lin, Chit-Kwan; Lin, Tsung-Han; Tarsa, Stephen John; Vlah, Dario (IEEE, 2009)
      We present FlowCode, a system that exploits network coding at the granularity of traffic flows to facilitate fault-tolerant data exchange in wireless mesh networks. Applications include multi-site data replication in ad-hoc ...
    • FlowK: Information Flow Control for the Cloud 

      Pasquier, Thomas; Bacon, Jean; Eyers, David (2018-06-20)
      Security concerns are widely seen as an obstacle to the adoption of cloud computing solutions and although a wealth of law and regulation has emerged, the technical basis for enforcing and demonstrating compliance lags ...
    • FlowR: Aspect Oriented Programming for Information Flow Control in Ruby 

      Pasquier, Thomas; Bacon, Jean; Shand, Brian (ACM, 2014)
      This paper reports on our experience with providing Information Flow Control (IFC) as a library. Our aim was to support the use of an unmodified Platform as a Service (PaaS) cloud infrastructure by IFC-aware web applications. ...
    • Flt1, pregnancy, and malaria: Evolution of a complex interaction 

      Karumanchi, Subbian Ananth; Haig, David Addison (Proceedings of the National Academy of Sciences, 2008)
    • Fluctuating orders and quenched randomness in the cuprates 

      Nie, Laimei; Sierens, Lauren E. Hayward; Melko, Roger G.; Sachdev, Subir; Kivelson, Steven A. (American Physical Society (APS), 2015)
      We study a quasi-two-dimensional classical Landau-Ginzburg-Wilson effective field theory in the presence of quenched disorder in which incommensurate charge-density wave and superconducting orders are intertwined. The ...
    • Fluctuating Spin Density Waves in Metals 

      Sachdev, Subir; Metlitski, Max; Qi, Yang; Xu, Cenke (American Physical Society, 2009)
      Recent work has used a U(1) gauge theory to describe the physics of Fermi pockets in the presence of fluctuating spin density wave order. We generalize this theory to an arbitrary band structure and ordering wavevector. ...
    • Fluctuations in 21-cm emission after reionization 

      Wyithe, J. Stuart B.; Loeb, Abraham (Oxford University Press, 2008)
      The fluctuations in the emission of redshifted 21-cm photons from neutral intergalactic hydrogen will provide an unprecedented probe of the reionization era. Conventional wisdom assumes that this 21-cm signal disappears ...
    • Fluctuations in the Kinetics of Linear Protein Self-Assembly 

      Michaels, Thomas C. T.; Dear, Alexander J.; Kirkegaard, Julius B.; Saar, Kadi L.; Weitz, David A.; Knowles, Tuomas P. J. (American Physical Society, 2016)
      Biological systems are characterized by compartmentalization from the subcellular to the tissue level, and thus reactions in small volumes are ubiquitous in living systems. Under such conditions, statistical number ...
    • Fluctuations in the Radio Background from Intergalactic Synchrotron Emission 

      Waxman, Eli; Loeb, Abraham (American Astronomical Society, 2000)
      The shocks produced in the intergalactic medium during large-scale structure formation accelerate a population of highly relativistic electrons that emit synchrotron radiation due to intergalactic magnetic fields. In a ...
    • Fluctuations of Hi-Hat Timing and Dynamics in a Virtuoso Drum Track of a Popular Music Recording 

      Räsänen, Esa; Pulkkinen, Otto; Virtanen, Tuomas; Zollner, Manfred; Hennig, Holger (Public Library of Science, 2015)
      Long-range correlated temporal fluctuations in the beats of musical rhythms are an inevitable consequence of human action. According to recent studies, such fluctuations also lead to a favored listening experience. The ...
    • Fluid breakup during simultaneous two-phase flow through a three-dimensional porous medium 

      Datta, Sujit S.; Dupin, Jean-Baptiste; Weitz, David A. (AIP Publishing, 2014)
      We use confocal microscopy to directly visualize the simultaneous flow of both a wetting and a non-wetting fluid through a model three-dimensional (3D) porous medium. We find that, for small flow rates, both fluids flow ...
    • Fluid dynamics of feeding behaviour in white-spotted bamboo sharks 

      Nauwelaerts, S.; Wilga, Cheryl; Lauder, George V.; Sanford, C. P. (The Company of Biologists, 2008)
      Although the motor control of feeding is presumed to be generally conserved, some fishes are capable of modulating the feeding behaviour in response to prey type and or prey size. This led to the ʻfeeding modulation ...
    • Fluid-driven fingering instability of a confined elastic meniscus 

      Biggins, John S.; Wei, Z; Mahadevan, Lakshminarayanan (IOP Publishing, 2015)
      When a fluid is pumped into a cavity in a confined elastic layer, at a critical pressure, destabilizing fingers of fluid invade the elastic solid along its meniscus (Saintyves B. et al., Phys. Rev. Lett., 111 (2013) 047801). ...
    • Fluids of Clusters in Attractive Colloids 

      Lu, Peter J.; Conrad, Jacinta C.; Wyss, Hans M.; Schofield, Andrew B.; Weitz, David A. (American Physical Society, 2006)