Search Results - "Murphy, D. W."
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1
Demonstration of a trapped-ion atomic clock in space
Published in Nature (London) (01-07-2021)“…Atomic clocks, which lock the frequency of an oscillator to the extremely stable quantized energy levels of atoms, are essential for navigation applications…”
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An X-Ray Imaging Survey of Quasar Jets: The Complete Survey
Published in The Astrophysical journal (20-03-2018)“…We present Chandra X-ray imaging of a flux-limited sample of flat spectrum radio-emitting quasars with jet-like structure. X-rays are detected from 59% of 56…”
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3
Metachronal swimming in Antarctic krill: gait kinematics and system design
Published in Marine biology (01-11-2011)“…Metachronal swimming, in which adjacent appendages stroke in sequence, is widespread among crustaceans inhabiting the transitional flow realm in which both…”
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4
A Multiwavelength Study of the High Surface Brightness Hot Spot in PKS 1421–490
Published in The Astrophysical journal (10-04-2009)“…Long Baseline Array imaging of the z = 0.663 broadline radio galaxy PKS 1421-490 reveals a 400 pc diameter high surface brightness hot spot at a projected…”
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5
Copper Extrusion/Reinjection in Cu-Based Thiospinels by Electrochemical and Chemical Routes
Published in Chemistry of materials (05-09-2006)“…The electrochemical reactivity of CuTi2S4 and CuCr2S4 spinel samples toward Li was studied over a wide range of voltages. Their electrochemical behavior can be…”
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Chandra Observations of Magnetic Fields and Relativistic Beaming in Four Quasar Jets
Published in The Astrophysical journal (01-04-2006)“…We discuss the physical properties of four quasar jets imaged with the Chandra X-Ray Observatory in the course of a survey for X-ray emission from radio jets…”
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Defects in Carbon Nanostructures
Published in Science (American Association for the Advancement of Science) (25-03-1994)“…Previous high-resolution electron microscopy (HREM) observations of the carbon nanotubes have led to a "Russian doll" structural model that is based on hollow…”
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8
Relation of structure and superconducting transition temperatures in A3C60
Published in Nature (London) (29-08-1991)“…The preparation of a series of single-phase, isostructural fcc superconductors with composition A3C60 (where A is K, Rb, Cs, or a mixture of these) is…”
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9
Characterization of hop-and-sink daphniid locomotion
Published in Journal of plankton research (01-03-2019)“…Abstract This study characterizes the hop-and-sink locomotion of Daphnia magna, a zooplankton species widely studied in a variety of biological fields…”
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10
VLA observations of a complete sample of core-dominated radio sources
Published in Monthly notices of the Royal Astronomical Society (15-09-1993)“…Maps with high dynamic range are presented of a well-defined sample of powerful core-dominated radio sources, all of which have 5-GHz core flux densities > 1…”
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Overview and Initial Results of the Very Long Baseline Interferometry Space Observatory Programme
Published in Science (American Association for the Advancement of Science) (18-09-1998)“…High angular resolution images of extragalactic radio sources are being made with the Highly Advanced Laboratory for Communications and Astronomy (HALCA)…”
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12
Discovery of an X-Ray Jet and Extended Jet Structure in the Quasar PKS 1055+201
Published in The Astrophysical journal (20-08-2006)“…This Letter reports rich X-ray jet structures found in the Chandra observation of PKS 1055+201. In addition to an X-ray jet coincident with the radio jet, we…”
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13
Estimates of the Free-Free Optical Depth toward the Subparsec-Scale Radio Source in Centaurus A
Published in The Astrophysical journal (01-01-2001)Get full text
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14
Conducting films of C60 and C70 by alkali-metal doping
Published in Nature (London) (01-03-1991)“…The preparation is reported of alkali-metal-doped films of C60 and C70 which have electrical conductivities at room temperature comparable to those attained by…”
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The parent structure of the layered high-temperature superconductors
Published in Nature (London) (21-07-1988)“…A study reports that the crystals of oxide superconductors are tetragonal with space group P4/mmm, and the structure contains planar (CuO2)infinity layers…”
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16
Structural and electronic properties of sodium-intercalated C60
Published in Nature (London) (02-04-1992)“…The synthesis and initial characterization of bulk Na(x)C60 (x = 2-6) and mixed alkali phase Na2AC60 (where A is K, Rb, or Cs) are reported. All of these…”
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Preparation and structure of the alkali-metal fulleride A4C60
Published in Nature (London) (22-08-1991)“…Recent C-13 NMR studies of K(x)C60 for x less than three indicated that the system contained two phases (x = 0 and x = 3) for x between zero and three. Here,…”
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Superconductivity at 28 K in RbxC60
Published in Physical review letters (27-05-1991)Get full text
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The fast multipole method (FMM) for electromagnetic scattering problems
Published in IEEE transactions on antennas and propagation (01-06-1992)“…The fast multipole method (FMM) developed by V. Rokhlin (1990) to efficiently solve acoustic scattering problems is modified and adapted to the…”
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The Knotty Question of the Jet of PKS B1421–490
Published in The Astrophysical journal (20-10-2005)“…We report the discovery of unusually strong optical and X-ray emission associated with a knot in the radio jet of PKS B1421-490. The knot is the brightest…”
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