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Showing 1 to 7 of 7 for “"spiral structures"”.
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Stellar Spiral Structures in Realistic Dark Matter Haloes
… I explore the formation and evolution of stellar spiral structures embedded in realistic dark matter haloes with very high resolution simulations. I first study the impact of the shape of the dark matter haloes. I find that non-adiabatic changes to the dark matter halo shape, commonly found in …
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The cycle and the spiral: rhetorical strategies in Malory's "Morte Darthur"
The cyclical and spiral structures which are typical of medieval romance inform Sir Thomas Malory's Morte D'Arthur. Despite the fact that his prose narrative includes native elements of realism and directness, Malory utilizes the cycle and the spiral as methods of arrangement. These patterns …
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Predicting the triple beta-spiral fold from primary sequence data
The Triple β-Spiral is a novel protein structure that plays a role in viral attachment and pathogenesis. At present, there are two Triple β-Spiral structures with solved crystallographic coordinates - one from Adenovirus and the other from Reovirus. There is evidence that the fold also occurs in …
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Spiral 2D array designs for volumetric imaging
… sampled at the Nyquist rate) based on geometric spiral structures, with the aim to reduce the number of array elements, and therefore transmit-receive channels required to meet a given acoustic specification. The aperiodic structure of these array designs is shown to minimise the height of …
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Integrated plasmonic nano-antenna devices
… nano-antennas based upon Charnia-like and spiral structures are proposed. It is shown that using these devices, electric field enhancements above 8.8 can be achieved over a wide range of wavelengths. Also, a plasmonic staircase nano-antenna, which can provide an electric field enhancement …
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The Magnetic Exchange Interactions in Chromium Chalcogenide Spinels
… However, at least two of the compounds exhibit spiral structures and it has been proved difficult to account for the various spin configurations within a unified theory of the magnetic interactions involved. More recently, the possibility of formulating a simplified interpretation of the …
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Development and Testing of a New Method for Velocity-Selecting White Dwarfs from Gaia by Galactic Population
<p>The detailed processes by which spiral galaxies form remains an open question in modern cosmology. Observations of the current configuration of spiral galaxies including the Milky Way reveal thin and thick disk and halo populations which must all be accounted for in formation theories and likely …