Browsing University of Hertfordshire by Title
Now showing items 17935-17954 of 24471
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Proof in C17 Algebra
(2005) -
Proof of Concept of a Low-Cost Beam-Steering Hybrid Reflectarray that Mixes Microstrip and Lens Elements Using Passive Demonstrators
(2022-02-11)In this article, a proof-of-concept study on the use of a hybrid design technique to reduce the number of phase shifters of a beam-scanning reflectarray (RA) is presented. An extended hemispherical lens antenna with feeds ... -
Proof of concept: could snake venoms be a potential source of bioactive compounds for control of mould growth and mycotoxin production
(2020-06-29)The objective was to screen 10 snake venoms for their efficacy to control growth and mycotoxin production by important mycotoxigenic fungi including Aspergillus flavus, Aspergillus westerdijkiae, Penicillium verrucosum, ... -
A Proof System and a Decision Procedure for Equality Logic
(Springer Nature, 2004)Equality Logic with uninterpreted functions is used for proving the equivalense or refinement between systems (hardware verification, compiler translation, etc). Current approaches for deciding this type of formulas use a ... -
Proof-of-Concept Testing of a Sustained Vortex-Flow Configuration for Hybrid Rocket Motors
(2010)One of the drawbacks of hybrid rocket motors is the limited regression rate of the fuel grain, which impacts on the scalablility of the type. A number of methods of increasing this have been proposed and successfully tested, ... -
Proof-of-Concept Testing of a Sustained Vortex-Flow Configuration for Hybrid Rocket Motors
(AIAA, 2010)One of the drawbacks of hybrid rocket motors is the limited regression rate of the fuel grain, which impacts on the scalablility of the type. A number of methods of increasing this have been proposed and successfully tested, ... -
Propagation invariant beams : Bessel beam resonators
(Nova Publishers, 2007) -
Propeller states in locally super-critical ULXs
(2023-02-01)An expected signature of the presence of neutron stars in the population of ultraluminous X-ray sources (ULXs) are large scale changes in X-ray luminosity, as systems reach spin equilibrium and a propeller state ensues. ... -
The properties of AGN in dwarf galaxies identified via SED fitting
(2024-07-01)Given their dominance of the galaxy number density, dwarf galaxies are central to our understanding of galaxy formation. While the incidence of active galactic nuclei (AGN) and their impact on galaxy evolution have been ... -
The Properties of Hitherto Unidentified Radio Sources in the MIGHTEE Survey
(2023-04-04)Radio astronomy is a pioneering branch of astronomy research - new radio surveys have gathered a lot of attention in the last few years, due to the huge expansion in capabilities of new radio facilities, with new ... -
The properties of Lyman break galaxies at z~ 5
(2004-01) -
The Properties of Sub-mm Galaxies in Hierarchical Models
(2008-11)We use the combined GALFORM semi-analytical model of galaxy formation and GRASIL spectrophotometric code to investigate the properties of galaxies selected via their sub-mm emission. Our fiducial model has previously been ... -
The Properties of the 500 K Dwarf UGPS J072227.51-054031.2, and a Study of the Far-Red Flux of Cold Brown Dwarfs
(2012-04-01)We present i and z photometry for 25 T dwarfs and one L dwarf. Combined with published photometry, the data show that the i - z, z - Y and z - J colors of T dwarfs are very red, and continue to increase through to the ... -
Properties of the Coolest Dwarfs
(Astronomical Society of the Pacific, 2008)Eleven years after the discovery of the first T dwarf, a population of ultracool L and T dwarfs has been identified that is large enough to show a range of atmospheric properties. Also, model atmospheres are sufficiently ... -
The properties of the star-forming interstellar medium at z=0.8-2.2 from HiZELS II : star formation and clump scaling laws in gas-rich, turbulent disks
(2012-12-01)We present adaptive optics assisted integral field spectroscopy of nine Ha-selected galaxies at z = 0.84-2.23 drawn from the HiZELS narrowband survey. Our observations map the kinematics of these star-forming galaxies on ... -
Properties of the T8.5 dwarf Wolf 940 B
(2010)We present 7.5-14.2 μm low-resolution spectroscopy, obtained with the Spitzer Infrared Spectrograph, of the T8.5 dwarf Wolf 940 B, which is a companion to an M4 dwarf with a projected separation of 400 AU. We combine these ...