Results 71 to 80 of about 23,844,245 (252)
Advanced Science, EarlyView.A high‐power hybrid nanogenerator (HP‐HNG) with multi‐degree‐of‐freedom mechanical coupling is reported, integrating multi‐directional wave energy for output to achieve 1 + 1 > 2 energy harvesting. The HP‐HNG achieves a peak output power of 0.764 W, corresponding to a peak power density of 127.303 W m−3. At a wave frequency of 1 Hz, the HP‐HNG delivers
Shuai Ding +9 more
wiley +1 more source
Artificial intelligence and machine learning methods in celestial mechanics
The astronomical field is entering the big data science era as a result of the rapid expansion of astronomical datasets' quantity and complexity. The sheer magnitude of contemporary astronomical datasets makes the employment of techniques other than ...
Smirnov, Evgeny +3 more
core +1 more source
Efficient Search and Detection of Faint Moving Objects in Image Data
The Astronomical JournalThe search and detection of faint moving objects in image data can enable discoveries of small solar system bodies. To detect objects fainter than the single-frame sensitivity limit, track-before-detect methods can improve the signal-to-noise ratio of ...
Tam Nguyen +3 more
doaj +1 more source
Advanced Science, EarlyView.A pneumatic energy‐buffering strategy transforms transient and intermittent footsteps into quasi‐continuous electrical energy for a self‐powered wearable biosensing platform. The footwear‐integrated air‐pumping harvester, combined with the rationally designed power‐management system, powers a wearable ankle PPG device with reduced motion artifacts ...
Ji‐Seok Kim +8 more
wiley +1 more source
The Discovery and Characterization of Minimoon 2024 PT5
The Astrophysical Journal LettersMinimoons are asteroids that become temporarily captured by the Earth–Moon system. We present the discovery of 2024 PT _5 , a minimoon discovered by the Asteroid Terrestrial-impact Last Alert System Sutherland telescope on 2024 August 7.
Bryce T. Bolin +6 more
doaj +1 more source
Advanced Science, EarlyView.Polymer‐based hydrogels have emerged as promising materials for atmospheric water harvesting (AWH) due to their high water affinity, tunable network structure, and excellent moisture adsorption‐desorption performance. Functional hydrogel systems enable efficient water capture and controlled release under low‐energy conditions, offering a sustainable ...
Swagata Datta +6 more
wiley +1 more source
Inversion of shape statistics for small solar system bodies
, 1998 The irregular shapes of small solar system bodies are modelled by lognormal statistics, i.e., assuming that the shapes are realisations of the so-called Gaussian random sphere.
Lagerros, JSV,, Muinonen, K,
core
Polarimetry of small bodies and satellites of our Solar System
, 2017 The large majority of astronomical observations are based on intensity measurements as a function of either wavelength or time, or both. Polarimetry, a technique which measures the way in which the electromagnetic field associated to the radiation ...
Belskaya, I. +7 more
core +1 more source
Spectral Variations across Latitudes on Asteroid (3200) Phaethon
The Astrophysical Journal3200 Phaethon is a near-Earth asteroid known to be actively emitting dust and gas when near its perihelion, and it is the target of the Japanese DESTINY+ mission. Several visible–near-IR spectra were obtained of Phaethon during 2003–2017, which have been
M. Angrisani +10 more
doaj +1 more source
Editorial to the Special Issue “Space Missions to Small Bodies: Results and Future Activities”
UniverseSmall bodies (asteroids, comets, and satellites) are the most primitive bodies of our solar system and, for this reason, represent the key to understanding its origin and early evolution [...]
Andrea Longobardo
doaj +1 more source