Browsing by Title
Now showing items 10135-10154 of 24227
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A high-resolution view of the jets in 3C 465
(2020-05-28)We present new high-resolution and high-sensitivity studies of the jets in the WAT source 3C 465, using deep transverse-resolved radio observations from e-MERLIN, and with complementary observations from the VLA. We derive ... -
High-resolution VLA Imaging of Obscured Quasars : Young Radio Jets Caught in a Dense ISM
(2020-06-10)We present new subarcsecond-resolution Karl G. Jansky Very Large Array (VLA) imaging at 10 GHz of 155 ultraluminous (L bol ∼ 1011.7-1014.2 L o˙) and heavily obscured quasars with redshifts z ∼ 0.4-3. The sample was selected ... -
A high-sensitivity polarimeter using a ferro-electric liquid crystal modulator
(2015-05-21)We describe the HIgh Precision Polarimetric Instrument (HIPPI), a polarimeter built at UNSW (The University of New South Wales) Australia and used on the Anglo-Australian Telescope (AAT). HIPPI is an aperture polarimeter ... -
High-sensitivity Stokes spectropolarimetry on cyanobacteria
(2016-02-01)We investigate the spectral signatures arising from the optical properties of chlorophyll in linear and circularly polarised scattered light from cyanobacteria. We include Stokes scattering coefficient measurements on two ... -
High-speed scanning laser diffractometer
(1979)A high-speed laser diffractometer is described which employs a novel scanned array or optical light guides to record the angular intensity variation of light scattered radially by a particle throughout an arc of 180 degrees ... -
High-stress abrasive wear response of 0.2% carbon dual phase steel : Effects of microstructural features and experimental conditions
(2007-06-15)Effects of heat treatment on the high-stress abrasive wear response of 0.2% carbon steel have been investigated at varying applied loads, abrasive (SiC) sizes and sliding distances. The heat treatment involved intercritical ... -
High-throughput allelic discrimination of B and Q biotypes of the whitefly, Bemisia tabaci, using TaqMan allele-selective PCR
(2008-01)BACKGROUND: B and Q biotypes of the whitefly, Bemisia tabaci (Gennadius), are generally regarded as the most significant given their global distribution and strong resistance to insecticides. Since these biotypes can coexist ... -
High-Velocity H I in the Spiral Galaxy NGC 5668
(1996)The nature and origin of the high-velocity clouds (HVCs) of neutral hydrogen in our Galaxy are not well understood, in part because of the uncertain distances to the clouds. As a result it is difficult to measure the mass ... -
High-Velocity Impacts of Pyrophoric Alloy Fragments on Thin Armour Steel Plates
(2021-08-18)The terminal ballistics effects of Intermetallic Reactive Materials (IRM) fragments have been the object of intense research in recent years. IRM fragments flying at velocities up to 2000 m/s represent a realistic threat ... -
The high-volume haemodiafiltration vs high-flux haemodialysis registry trial (H4RT): a multi-centre, unblinded, randomised, parallel-group, superiority study to compare the effectiveness and cost-effectiveness of high-volume haemodiafiltration and high-flux haemodialysis in people with kidney failure on maintenance dialysis using linkage to routine healthcare databases for outcomes
(2022-06-27)Background: More than a third of the 65,000 people living with kidney failure in the UK attend a dialysis unit 2–5 times a week to have their blood cleaned for 3–5 h. In haemodialysis (HD), toxins are removed by diffusion, ... -
Higher current algebras, homotopy Manin triples, and a rectilinear adelic complex
(2023-09-30)The notion of a Manin triple of Lie algebras admits a generalization, to dg Lie algebras, in which various properties are required to hold only up to homotopy. This paper introduces two classes of examples of such homotopy ... -
Higher-spin conserved currents in supersymmetric sigma models on symmetric spaces
(2005-01-12)Local higher-spin conserved currents are constructed in the supersymmetric sigma models with target manifolds symmetric spaces $G/H$. One class of currents is based on generators of the de Rham cohomology ring of $G/H$; a ... -
The highest frequency detection of a radio relic : 16 GHz AMI observations of the 'Sausage' cluster
(2014-06-11)We observed the cluster CIZA J2242.8+5301 with the Arcminute Microkelvin Imager at 16 GHz and present the first high radio-frequency detection of diffuse, non-thermal cluster emission. This cluster hosts a variety of bright, ... -
Highlight on the channel tunnel: editorial introduction
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Highly efficient energy excitation transfer in light-harvesting complexes : the fundamental role of noise-assisted transport
(2009)Excitation transfer through interacting systems plays an important role in many areas of physics, chemistry, and biology. The uncontrollable interaction of the transmission network with a noisy environment is usually assumed ... -
Highly integrated transmitting and receiving phased array with multi-channels and high efficiency in K/Ka-band SatCom application
(2021-07-26)A highly integrated K/Ka-band phased array with duplexing channels for transmitting and dual circularly polarized channels for receiving is presented. To increase both the efficiency and channel isolation, a novel architecture ... -
Highly perturbed molecular gas in infalling cluster galaxies : the case of CGCG97-079
(2015-10-11)We report on CO (J = 2 → 1) mapping with the IRAM 30-m HEtrodyne Receiver Array (HERA) of CGCG 97-079, an irregular galaxy in the merging galaxy cluster Abell 1367 (z = 0.022). We find that ˜80 per cent of the detected CO ... -
Highly polarized structures in the near-nuclear regions of Cygnus A: intrinsic anisotropy within the cones
(2000)We present near-IR imaging polarimetry observations of the nucleus of Cygnus A, taken with the NICMOS camera of the HST at a wavelength of 2.0μm. These maps reveal a highly collimated region of polarized emission straddling ... -
Highly replicable, low-cost, portable, general-purpose, high-resolution spectrometer with applications in stellar studies and exoplanet science
(SPIE, 2019-09-09)High-resolution spectrometers have proven to be an important tool for astronomical observations and continue to have an ever expanding set of applications, such as high resolution IFS (Integral Field Spectroscopy). With ...