Now showing items 6297-6316 of 18296

    • The G-protein–gated K+ channel, IKACh, is required for regulation of pacemaker activity and recovery of resting heart rate after sympathetic stimulation 

      Mesirca, Pietro; Marger, Laurine; Toyoda, Futoshi; Rizzetto, Riccardo; Audoubert, Matthieu; Dubel, Stefan; Torrente, Angelo G.; DiFrancesco, Mattia L.; Muller, Jana Christina; Leoni, Anne-Laure; Couette, Brigitte; Nargeot, Joël; Clapham, David E.; Wickman, Kevin; Mangoni, Matteo E. (The Rockefeller University Press, 2013)
      Parasympathetic regulation of sinoatrial node (SAN) pacemaker activity modulates multiple ion channels to temper heart rate. The functional role of the G-protein–activated K+ current (IKACh) in the control of SAN pacemaking ...
    • G11.92-061-MM2: A bonafide massive prestellar core? 

      Cyganowski, C. J.; Brogan, C. L.; Hunter, Tucker R; Graninger, Dawn M; Oberg, Karin; Vasyunin, A.; Zhang, Qiyu; Friesen, R.; Schnee, S. (IOP Publishing, 2014)
      Core accretion models of massive star formation require the existence of stable massive starless cores, but robust observational examples of such objects have proven elusive. We report subarcsecond-resolution Submillimeter ...
    • G11.92–0.61-MM2: A bonafide massive prestellar core? 

      Cyganowski, C. J.; Brogan, C. L.; Hunter, T. R.; Graninger, Dawn M; Oberg, Karin; Vasyunin, A.; Zhang, Q.; Friesen, R.; Schnee, S. (IOP Publishing, 2014)
      Core accretion models of massive star formation require the existence of stable massive starless cores, but robust observational examples of such objects have proven elusive. We report subarcsecond-resolution Submillimeter ...
    • GaAs Enhancement-Mode NMOSFETs Enabled by Atomic Layer Epitaxial \(La_{1.8}Y_{0.2}O_3\) as Dielectric 

      Dong, L.; Wang, X. W.; Zhang, J. Y.; Li, X. F.; Gordon, Roy Gerald; Ye, P. D. (Institute of Electrical and Electronics Engineers, 2013-02-04)
      We demonstrate high performance enhancement-mode (E-mode) GaAs NMOSFETs with an epitaxial gate dielectric layer of \(La_{1.8}Y_{0.2}O_3\) grown by atomic layer epitaxy (ALE) on GaAs(111)A substrates. A \(0.5-\mu m\)-gate-length ...
    • GaAs/Al[sub 0.15]Ga[sub 0.85]As terahertz quantum cascade lasers with double-phonon resonant depopulation operating up to 172 K 

      Adams, Robert W.; Vijayraghavan, Karun; Wang, Qi Jie; Fan, Jonathan; Capasso, Federico; Khanna, Suraj P.; Davies, A. Giles; Linfield, Edmund H.; Belkin, Mikhail A. (AIP Publishing, 2010)
      We report the design and performance of GaAs/Al0.15Ga0.85As terahertz quantum cascade lasers with double-phonon resonant depopulation and a vertical lasing transition. Devices were processed into gold-clad double-metal ...
    • Gadflies (Virg. Geo. 3.146-148) 

      Thomas, Richard F. (Harvard University Press, 1982)
    • GADIA: A Greedy Asynchronous Distributed Interference Avoidance Algorithm 

      Babadi, Behtash; Tarokh, Vahid (Institute of Electrical and Electronics Engineers, 2010)
      In this paper, the problem of distributed dynamic frequency allocation is considered for a canonical communication network, which spans several networks such as cognitive radio networks and digital subscriber lines (DSLs). ...
    • Gain competition in dual wavelength quantum cascade lasers 

      Geiser, Markus; Pflügl, Christian; Belyanin, Alexey; Wang, Qi Jie; Yu, Nanfang; Edamura, Tadanaka; Yamanishi, Masamichi; Kan, Hirofumi; Fischer, Milan; Wittmann, Andreas; Faist, Jérôme; Capasso, Federico (The Optical Society, 2010)
      We investigated dual wavelength mid-infrared quantum cascade lasers based on heterogeneous cascades. We found that due to gain competition laser action tends to start in higher order lateral modes. The mid-infrared mode ...
    • The Gain Paradox 

      Berg, Howard (Elsevier, 2009)
      Chemoreceptors in Escherichia coli control the activity of a kinase that phosphorylates a response regulator that, in turn, biases the direction of rotation of flagellar motors, affecting the manner in which cells swim. A ...
    • Gain Recovery Dynamics and Photon-Driven Transport in Quantum Cascade Lasers 

      Choi, Hyunyong; Diehl, Laurent; Wu, Zong-Kwei; Giovannini, Marcella; Faist, Jérôme; Capasso, Federico; Norris, Theodore B. (American Physical Society, 2008)
      Quantum cascade lasers are semiconductor devices based on the interplay of perpendicular transport through the heterostructure and the intracavity lasing field. We employ femtosecond time-resolved pump-probe measurements ...
    • A Gain-Field Encoding of Limb Position and Velocity in the Internal Model of Arm Dynamics 

      Hwang, Eun Jung; Donchin, Opher; Smith, Maurice A; Shadmehr, Reza (Public Library of Science (PLoS), 2003)
      Adaptability of reaching movements depends on a computation in the brain that transforms sensory cues, such as those that indicate the position and velocity of the arm, into motor commands. Theoretical consideration shows ...
    • Gains from Trade When Firms Matter 

      Melitz, Marc J.; Trefler, Daniel (American Economic Association, 2012)
      The rising prominence of intra-industry trade and huge multinationals has transformed the way economists think about the gains from trade. In the past, we focused on gains that stemmed either from endowment differences ...
    • Gait and speed selection in slender inertial swimmers 

      Gazzola, Mattia; Argentina, Médéric; Mahadevan, Lakshminarayanan (Proceedings of the National Academy of Sciences, 2015)
      Inertial swimmers use flexural movements to push water and generate thrust. We quantify this dynamical process for a slender body in a fluid by accounting for passive elasticity and hydrodynamics and active muscular force ...
    • Gait Recognition Using Encodings With Flexible Similarity Measures 

      Crouse, Michael B; Chen, Kevin; Kung, H. T. (USENIX, 2014)
      Gait signals detectable by sensors on ubiquitous personal devices such as smartphones can reveal characteristics unique to each individual, and thereby offer a new approach to recognizing users. Conventional pattern matching ...
    • Galactic Angular Momentum in the Illustris Simulation: Feedback and the Hubble Sequence 

      Genel, Shy; Fall, S. Michael; Hernquist, Lars Eric; Vogelsberger, Mark; Snyder, Gregory F.; Rodriguez-Gomez, Vicente; Sijacki, Debora; Springel, Volker (IOP Publishing, 2015)
      We study the stellar angular momentum of thousands of galaxies in the Illustris cosmological simulation, which captures gravitational and gas dynamics within galaxies, as well as feedback from stars and black holes. We ...
    • Galactic supernova remnant candidates discovered by THOR 

      Anderson, L. D.; Wang, Y.; Bihr, S.; Rugel, M.; Beuther, H.; Bigiel, F.; Churchwell, E.; Glover, S. C. O.; Goodman, Alyssa; Henning, Th.; Heyer, M.; Klessen, R. S.; Linz, H.; Longmore, Steven N.; Menten, K. M.; Ott, J.; Roy, N.; Soler, J. D.; Stil, J. M.; Urquhart, J. S. (EDP Sciences, 2017)
      Context. There is a considerable deficiency in the number of known supernova remnants (SNRs) in the Galaxy compared to that expected. This deficiency is thought to be caused by a lack of sensitive radio continuum data. ...
    • A Galactic-scale gas wave in the solar neighbourhood 

      Alves, Joao; Zucker, Catherine; Goodman, Alyssa; Speagle, Joshua; Meingast, Stefan; Robitaille, Thomas; Finkbeiner, Douglas; Schlafly, Edward; Green, Gregory (Springer Science and Business Media LLC, 2020-01-07)
      For the past 150 years, the prevailing view of the local Interstellar Medium (ISM) was based on a peculiarity known as the Gould's Belt (Herschel 1847, Gould 1874, Bobylev 2014, Palous 2016), an expanding ring of young ...
    • Galactose Metabolism Plays a Crucial Role in Biofilm Formation by Bacillus subtilis 

      Chai, Yunrong; Beauregard, Pascale; Vlamakis, Hera C; Losick, Richard M.; Kolter, Roberto Guillermo (American Society of Microbiology, 2012)
      Galactose is a common monosaccharide that can be utilized by all living organisms via the activities of three main enzymes that make up the Leloir pathway: GalK, GalT, and GalE. In Bacillus subtilis, the absence of GalE ...
    • Galanin neurons in the medial preoptic area govern parental behavior 

      Wu, Zheng; Autry, Anita E.; Bergan, Joseph F.; Watabe-Uchida, Mitsuko; Dulac, Catherine G. (2014)
      Mice display robust, stereotyped behaviors toward pups: virgin males typically attack pups, while virgin females and sexually experienced males and females display parental care. We show here that virgin males genetically ...
    • Galaxy clustering and galaxy bias in a Lambda CDM universe 

      Weinberg, D. H.; Dave, R.; Katz, N.; Hernquist, L. (American Astronomical Society, 2004)