Now showing items 8664-8683 of 24328

    • 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 ...
    • G-Squared Statistic for Detecting Dependence, Additive Modeling, and Calibration Concordance for Astrophysical Data 

      Wang, Xufei (2017-08-31)
      We present three topics in this thesis, G-squared statistic for independence testing as well as additive modeling, and calibration concordance by multiplicative shrinkage. Detecting dependence is a fundamental problem. ...
    • 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 ...
    • A Gain of Function Senescence Bypass Screen Identifies the Homeobox Transcription Factor DLX2 as a Regulator of ATM-P53 Signaling 

      Wang, Yifan (2016-01-26)
      Senescence stimuli activate multiple tumor suppressor pathways to initiate cycle arrest and a differentiation program characteristic of senescent cells. We performed a two-stage, gain-of function screen to select for the ...
    • 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 ...
    • Gain-of-Function Genetic Screens Using Barcoded Libraries of Human Open Reading Frames Identify Regulators of Proliferation and Cancer Drivers 

      Sack, Laura Magill (2015-05-17)
      The identification of genetic events that cause tumorigenesis is a key goal of cancer research. While recent sequencing efforts have provided unprecedented illumination of cancer genomes, the inherent genomic instability ...
    • 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 ...
    • Gait Studies for a Power and Control Autonomous Legged Microrobot 

      Goldberg, Benjamin Isaac (2017-09-08)
      The confluence of new materials, manufacturing techniques, and small-scale electronics allows robots to not only become smaller, but also have increased degrees of freedom and functionality. One approach for the creation ...
    • 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 Conformity via Small-Scale Clustering in Simulations and Surveys 

      Bray, Aaron David Dakin (2016-05-14)
      Data from recent galaxy surveys reveal that, even at fixed stellar mass, quiescent galaxies are preferentially found around other red galaxies, an observation referred to as galactic conformity. This detection may offer ...