Results 191 to 200 of about 559,591 (386)

Spatial and velocity offsets of Galactic masers from the centres of spiral arms [PDF]

, 2019
J. P. Vallée
openalex   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 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

Tunable Multifunctional Terahertz Coding Metasurface for Polarization Manipulation

Advanced Photonics Research, EarlyView.
Coding metasurfaces (CMs) offer versatile control over electromagnetic waves. Herein, a tunable multifunctional terahertz (THz) metasurface integrated with vanadium dioxide (VO2) is presented, enabling propagation‐phase manipulation of linearly polarized waves and hybrid‐phase control of circularly polarized waves.
Chunsheng Zhang, Tingnuo Pan, Xiao Zhang, Wenjia Li, Bo Lv, Yuxiang Li, Zheng Zhu, Chunying Guan, Wanying Liu, Xiaohan Jiang, Jinhui Shi   +10 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

The effect of spiral arms on the Sérsic photometry of galaxies [PDF]

, 2022
Alessandro Sonnenfeld
openalex   +1 more source

Multiobjective Codesign Optimization of a Planar Pneumatic Artificial Muscle‐Based Snake‐Like Robot for Enhanced Agility and Energy Efficiency

Advanced Robotics Research, EarlyView.
A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley   +1 more source

Design Optimization of a Variable Stiffness Robotic Gripper with Passive Restoration Fabricated by Multimaterial 3D Printing

Advanced Robotics Research, EarlyView.
A multimaterial robotic gripper fabricated via multimaterial 3D printing integrates conductive thermopolymer joints with flexible elastomeric components. Joule heating enables precise joint‐level stiffness modulation, enhanced by embedded temperature sensors, passive shape restoration, and active cooling, enabling versatile manipulation capabilities ...
Daniel Jee Seng Goh, Guo Liang Goh, Selvanther Sivarajan, Van Pho Nguyen, Wai Yee Yeong   +4 more
wiley   +1 more source

FIELDMAPS Data Release: Far-infrared Polarization in the “Bones” of the Milky Way

The Astrophysical Journal Supplement Series
Polarization observations of the Milky Way and many other spiral galaxies have found a close correspondence between the orientation of spiral arms and magnetic field lines on scales of hundreds of parsecs. This paper presents polarization measurements at
Simon Coudé, Ian W. Stephens, Philip C. Myers, Nicole Karnath, Howard A. Smith, Andrés E. Guzmán, Jessy Marin, Catherine Zucker, B.-G. Andersson, Zhi-Yun Li, Leslie W. Looney, Giles Novak, Thushara G. S. Pillai, Sarah I. Sadavoy, Patricio Sanhueza, Archana Soam   +15 more
doaj   +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