Results 121 to 130 of about 599,828 (297)

Multifunctional Chiral Halide Perovskites: Advancing Chiro‐Optics, Chiro‐Optoelectronics, and Spintronics

open access: yesAdvanced Science, Volume 12, Issue 34, September 11, 2025.
This review spotlights key advances in chiral halide perovskite materials and devices, covering device architectures, fabrication methods, and emerging applications like circularly polarized light functions, neuromorphic computing, and spintronics. It explores structure‐property relationships and chirality transfer mechanisms, discusses challenges in ...
Qi Liu, Hui Ren, Qi Wei, Mingjie Li
wiley   +1 more source

Star Formation in the Lopsided Galaxy Arp 291

open access: yesThe Astrophysical Journal
We have investigated the star formation process taking place in the lopsided galaxy Arp 291, based on narrowband images in the H α , [N ii ] λ 6583, and [O iii ] λ 5007 emission lines, obtained using the modern tunable photometer MaNGaL at the Caucasus ...
Irina S. Proshina, Dmitriy V. Oparin
doaj   +1 more source

Deep griz GMOS Imaging of the Dwarf Irregular Galaxy Kar 50

open access: yes, 2002
Images obtained with the Gemini Multi-Object Spectrograph (GMOS) are used to investigate the stellar content and distance of the dwarf irregular galaxy Kar 50.
Binggeli B.   +3 more
core   +1 more source

A review of multiscale numerical modeling of rock mechanics and rock engineering

open access: yesDeep Underground Science and Engineering, Volume 4, Issue 3, Page 382-405, September 2025.
Multiscale numerical methods of rock mechanics and rock engineering are reviewed, and the review results show that more attention should be paid to the development of an advanced constitutive model in addition to numerical techniques themselves. Abstract Rock is geometrically and mechanically multiscale in nature, and the traditional phenomenological ...
Xindong Wei, Zhe Li, Gaofeng Zhao
wiley   +1 more source

RR Lyrae and Short-Period Variable Stars in the Dwarf Irregular Galaxy NGC 6822 [PDF]

open access: yes, 2003
We report the discovery of a large number of short-period variable stars in the dwarf irregular galaxy NGC 6822, based on deep time-series imaging carried out with the ESO Very Large Telescope.
G. Clementini   +3 more
semanticscholar   +1 more source

The influences of the Magellanic Clouds on the Galaxy: Pole shift, warp, and star formation history

open access: yes, 2012
We investigate how the Large Magellanic Cloud (LMC) influences the evolution of the Galaxy after the LMC enters into the virial radius of the dark matter halo of the Galaxy for the first time.
Bekki   +41 more
core   +1 more source

Molecular Clouds in Dwarf Irregular Galaxies [PDF]

open access: yesHighlights of Astronomy, 1989
The study of molecular clouds in dwarf galaxies was, until recently, an arduous task and provided detections in only a handful of sources (see Thronson and Bally 1986; Wiklind et al. 1986; Tacconi and Young 1987; Arnoult et al. 1988). Line strengths observed in CO were small (<100mK) and measurements were confined to one position per source, thus ...
openaire   +2 more sources

Explainable AI for Generalizable PCOS Diagnosis: A Geographically Validated Ensemble Learning Approach With Feature Selection

open access: yesEngineering Reports, Volume 7, Issue 9, September 2025.
An ensemble meta‐classifier combining nine machine learning algorithms via weighted voting on 23 key parameters achieved 94.34% accuracy in PCOS prediction, demonstrating that ensemble techniques substantially enhance diagnostic precision and reliability for this complex hormonal disorder.
Sonia Akter, Saha Reno
wiley   +1 more source

A Wide Field Planetary Camera 2 Study of the Resolved Stellar Population of the Pegasus Dwarf Irregular Galaxy (DDO 216) [PDF]

open access: yes, 1998
The stellar population of the Pegasus dwarf irregular galaxy is investigated in images taken in the F439W (B), F555W (V), and F814W (I) bands with the Wide Field Planetary Camera 2 (WFPC2) on the Hubble Space Telescope.
J. Gallagher   +7 more
semanticscholar   +1 more source

Learning by helping: Evidence from Chinese brokerages' community CSR

open access: yesStrategic Management Journal, Volume 46, Issue 9, Page 2166-2198, September 2025.
Abstract Research Summary We propose that firms engaging in community corporate social responsibility (CSR) can acquire valuable local knowledge that improves their core operations. We test our proposition leveraging a unique context‐the Securities Association of China's pairing assistance scheme under the country's targeted poverty alleviation program.
Jingyuan Li, Yong H. Kim, Jose Uribe
wiley   +1 more source

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