Results 121 to 130 of about 9,206 (285)
A Degradable Bioinspired Flier with Aerogel‐Based Colorimetric Sensors for Environmental Monitoring
Advanced Science, Volume 13, Issue 15, 13 March 2026.Biodegradable fliers are developed inspired by Tipuana tipu samaras, integrating cellulose nanocrystal aerogel (CNCa) sensors loaded with natural dyes for pH and ammonia detection. The lightweight, degradable fliers mimic natural morphology and aerodynamics, offering an eco‐friendly, scalable solution for in situ environmental monitoring after passive ...
Gianpaolo Gallo +4 more
wiley +1 more source
Are Purely Gaseous Bars in Dwarf Irregulars a Myth?
The Astrophysical JournalAbout two-thirds of galactic disks exhibit a central ellipsoidal stellar component called the bar, with or without a gaseous counterpart. However, there are a few dwarf galaxies with purely gaseous bars: NGC 3741, NGC 2915, and DDO 168. This is a puzzle,
Anagha A. G., Arunima Banerjee
doaj +1 more source
Stellar Dynamics in the Central Arcsecond of Our Galaxy [PDF]
, 2003 R. Schödel +5 more
openalex +1 more source
, 1999 Our Galaxy is a barred spiral. Recent work based on the COBE NIR data implies a small bulge-bar and a disk with a short scale-length. The corotation radius of the bar is in the range 3-4.5 kpc. The stellar density distribution beyond the end of the bar appears to be perturbed strongly by the Galaxy's spiral arms.
openaire +2 more sources
Edible Pneumatic Battery for Sustained and Repeated Robot Actuation
Advanced Science, Volume 13, Issue 15, 13 March 2026.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
Planetary Nebulae and Halo Dynamics in Early Type Galaxies [PDF]
, 1993 Hui Xue, H. C. Ford
openalex +1 more source
Programming Next‐Generation Synthetic Biosensors by Genetic Circuit Design
Advanced Science, Volume 13, Issue 14, 9 March 2026.Synthetic biology enables genetic circuit‐based biosensing to detect diverse targets, process signals, and transduce them into readable outputs or intracellular regulatory activities. However, field deployment and real‐world application of such synthetic biosensors face considerable challenges in sensitivity, specificity, speed, stability, and ...
Yuanli Gao +4 more
wiley +1 more source
Breaking the Degeneracy between Warps and Radial Flows in External Galaxies
The Astrophysical JournalObservations of the line-of-sight (LOS) component of emitter velocities in galaxies are valuable for reconstructing their two-dimensional (2D) velocity fields, albeit requiring certain assumptions.
Francesco Sylos Labini +2 more
doaj +1 more source
MOND vs. Newtonian dynamics in early-type galaxies. The case of NGC 4649 (M60)
, 2008 S. Samurović, Milan M. Ćirković
openalex +1 more source
A New Padé Approach to Modeling Wormholes in Dekel‐Zhao Dark Matter Halos
Annalen der Physik, Volume 538, Issue 3, March 2026.A matter‐first Padé strategy is introduced to build traversable wormholes from prescribed dark‐matter halos. Rational Padé fits approximately the Dekel–Zhao density and are analytically integrated to obtain a shape function that exactly reproduces the intended matter content, avoiding spurious poles of geometry‐first schemes.
Jonathan Alves Rebouças +4 more
wiley +1 more source