Results 91 to 100 of about 8,485 (267)

Quantifying the fine structures of disk galaxies with deep learning: Segmentation of spiral arms in different Hubble types [PDF]

, 2021
Kenji Bekki
openalex   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

The Role of Spiral Arms in Galaxies. II. Similarities amid Diversity

The Astrophysical Journal
The role of spiral arms in galaxies—whether they enhance star formation efficiency or primarily act as material gatherers—remains an open question. Observational studies have yielded ambiguous results, in part due to the choice of star formation rate ...
Bingqing Sun, Daniela Calzetti, Andrew J. Battisti   +2 more
doaj   +1 more source

Magnetic Fields and the Interstellar Medium in Spiral Arms [PDF]

, 1996
M. Urbaník, M. Soida, R. Beck
openalex   +1 more source

Perturbed precessing ellipses as the building blocks of spiral arms in a barred galaxy with two pattern speeds

, 2022
M. Harsoula, C. Efthymiopoulos, G. Contopoulos, A. C. Tzemos   +3 more
openalex   +1 more source

Spatially‐Controlled Planar Guided Crystallization of Low‐Loss Phase Change Materials for Programmable Photonics

Advanced Materials, EarlyView.
The concept of spatially‐controlled planar guided crystallization is a novel method for programming the growth of optically homogeneous low‐loss Sb2S3 phase‐change material (PCM), leveraging the directional crystallization within confined channels.
Fouad Bentata, Arnaud Taute, Capucine Laprais, Régis Orobtchouk, Eva Kempf, Alban Gassenq, Yves Pipon, Michele Calvo, Valérie Martinez, Stéphane Monfray, Guillaume Saint‐Girons, Nicolas Baboux, Hai Son Nguyen, Xavier Letartre, Lotfi Berguiga, Patrice Genevet, Sébastien Cueff   +16 more
wiley   +1 more source

Dynamical Mechanism of Episodic Gas Accretion to the Central Region of Spiral Galaxies

The Astrophysical Journal
We performed N -body/smoothed particle hydrodynamics simulations of isolated spiral galaxies with various bulge-to-disk mass ratios ( M _bulge / M _disk ) from 0.02 to 0.2 to investigate mass transport from galactic scales (10 kpc) down to circumnuclear ...
Naomichi Yutani, Nozomu Kawakatu, Takayuki Saitoh, Keiichi Wada   +3 more
doaj   +1 more source

SKA tomography of Galactic star-forming regions and spiral arms [PDF]

, 2015
Laurent Loinard, Mark C. Thompson, M. G. Hoare, Huib Jan van Langevelde, S. P. Ellingsen, A. Brunthaler, Jan Forbrich, K. L. J. Rygl, Luis F. Rodrı́guez, A. J. Mioduszewski, Rosa M. Torres-Lopez, Sergio A. Dzib, Gisela N. Ortiz-León, Tyler L. Bourke, James Green   +14 more
openalex   +1 more source

The Space Within: How Architected Voids Promote Tissue Formation

Advanced Materials, EarlyView.
This review explores the role of void spaces in tissue engineering scaffolds and examines four key methods for introducing porosity into hydrogels at different scales. It discusses sacrificial templating, microgels, phase separation, and 3D printing, highlighting principles, advantages, and limitations. It also addresses emerging strategies integrating
Anna Puiggalí‐Jou, Isabel B. Hui, Carla Fernandez‐Rico, Marcy Zenobi‐Wong   +3 more
wiley   +1 more source

Spectral observations of the systems with the disturbed spiral arms: Arp 42, Arp 82, and Arp 58 [PDF]

, 2019
A. V. Zasov, A. S. Saburova, Oleg V. Egorov, Sergei N. Dodonov   +3 more
openalex   +1 more source