Results 61 to 70 of about 2,487 (263)

Testing hydrodynamics schemes in galaxy disc simulations [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2016
Published in Monthly Notices of the Royal Astronomical Society: http://mnras.oxfordjournals.org/content/460/4 ...
Few, C. G.   +3 more
openaire   +3 more sources

Edible Pneumatic Battery for Sustained and Repeated Robot Actuation

open access: yesAdvanced Science, EarlyView.
This work presents an edible energy source and valve system to power soft, pneumatically driven edible robots. A chemical reaction between sodium bicarbonate and citric acid generates carbon dioxide gas, and a pressure‐triggered edible valve enables self‐repetitive motion of the edible actuator.
Bokeon Kwak   +5 more
wiley   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

open access: yesAdvanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown   +3 more
wiley   +1 more source

Galactic Evolution Showing a Constant Circulating Speed of Stars in a Galactic Disc without Requiring Dark Matter

open access: yesReports in Advances of Physical Sciences, 2020
It is an unsolved mystery that the rotation velocity of a galactic disc is same at any radial distances. The presence of dark matter is expected, but not observed.
Shigeto Nagao
doaj   +1 more source

The Photometric and Spectroscopic Properties of Remnant and Restarted Radio Galaxies in the Lockman Hole Field

open access: yesGalaxies, 2021
Radio galaxies are known to undergo phases of activity, where the stage after the jets have switched off is referred to as the remnant phase. This state can be followed by a restarted phase when the activity reignites. Remnant and restarted radio sources
Nika Jurlin   +3 more
doaj   +1 more source

The fragility of thin discs in galaxies – II. Thin discs as tracers of the assembly history of galaxies

open access: yesMonthly Notices of the Royal Astronomical Society, 2023
ABSTRACT Thin galactic discs and nuclear stellar discs (NSDs) are fragile structures that can be easily disturbed by merger events. By studying the age of the stellar populations in present-day discs, we can learn about the assembly history of galaxies and place constraints on their past merger events.
Pablo M Galán-de Anta   +6 more
openaire   +7 more sources

Substituent‐Based Modulation of Self‐Assembly and Immunogenicity of Amphipathic Peptides

open access: yesAdvanced Science, EarlyView.
This study systematically investigates how positional and subtle changes, such as substituents on the phenyl ring attached to short amphipathic peptides, influence their self‐assembly, fibril morphology, and immunogenic responses. ABSTRACT Self‐assembled peptide‐based biomaterials provide versatile platforms for biomedical uses, featuring customizable ...
Anirban Das   +13 more
wiley   +1 more source

Box/Peanuts in disc galaxies

open access: yes, 2022
The internal evolution of bars promotes the vertical movement of stars that eventually will form boxy/peanut structures. Most attention has been paid to this bar-related galaxy component in the last years, mostly due to the discovery of a box/peanut in our own Milky-Way.
openaire   +1 more source

Formation of disc galaxies around z ∼ 2 [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2019
We present combined evolution of morphological and stellar properties of galaxies on the two sides of z=2 (2.02 to ~70% for z<2, compensating for the fall in population of pure discs and pure spheroids. All quiescent outliers of our full sample on the main-sequence, are 2-component systems, belonging to the lower redshift range (z<2).
Sonali Sachdeva   +4 more
openaire   +2 more sources

Robust C–V Ratio Technique for Profiling Defects in Proton‐Irradiated 4H‐SiC

open access: yesAdvanced Electronic Materials, EarlyView.
A noise‐robust C–V ratio technique is introduced to profile radiation‐induced defects in proton‐irradiated 4H‐SiC Schottky diodes. By using analytical capacitance ratios instead of numerical differentiation, the method directly extracts trap‐density and effective trap‐energy profiles at room temperature.
Kibeom Kim   +4 more
wiley   +1 more source

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