Results 141 to 150 of about 3,592,155 (283)

Diffuse Interstellar Band Formation in Dense Clouds

open access: yes, 1976
Measurements of the strengths of the diffuse interstellar bands at 4430, 5780 and 5797 Å show that the bands tend to be weak with respect to extinction in dense interstellar clouds.
Cohen, Judith G., Snow, Theodore P., Jr.
core  

Unveiling Mechanisms of SEI Formation and Sodium Loss in Sodium Batteries via Interface Reactor Sampling

open access: yesAdvanced Science, EarlyView.
An “Interface Reactor” strategy boosts simulation stability by 2–3 orders of magnitude, enabling stable 100 ns molecular dynamics of electrode‐electrolyte interfaces. Distinct SEI formation mechanisms are revealed: mixed co‐formation in carbonates versus surface‐energy‐controlled NaF crystallization in ethers. Metadynamics simulations further elucidate
Zhoulin Liu   +6 more
wiley   +1 more source

The H II Regions’ Molecular Law of Star Formation

open access: yesThe Astrophysical Journal
We combine imaging data from the HST, JWST, and ground-based millimeter facilities to investigate the correlation between star formation rate (SFR) and molecular gas at the ∼100 pc scale of H II regions in three nearby galaxies: NGC628, NGC5194, and ...
Daniela Calzetti   +30 more
doaj   +1 more source

Emergence of high-mass stars in complex fiber networks (EMERGE)

open access: yesAstronomy & Astrophysics
Context. A turbulent cascade naturally generates a hierarchy of structures within molecular clouds. Filament networks arise from this turbulent cascade, with fibers suggested to be the first (tran)sonic components formed out of it.
Bonanomi Francesca   +3 more
doaj   +1 more source

The (Cn)-N-14/(Cn)-N-15 Ratio in Diffuse Molecular Clouds

open access: yes, 2015
We report the first detection of (CN)-N-15 in diffuse molecular gas from a detailed examination of CN absorption lines in archival spectra, obtained with the Ultraviolet and Visual Echelle Spectrograph of the Very Large Telescope of stars probing local ...
Lambert, David L.   +2 more
core   +1 more source

Metal‐Half‐Salen Chemistry for One‐Pot Mineralization on Hydrophobic Polymer Membranes

open access: yesAdvanced Science, EarlyView.
Here we report a versatile one‐pot synthetic strategy for organic–inorganic composite membranes, which leverages a metal half‐Salen system to precisely govern the competing kinetics of coordination and hydrolysis. In contrast to conventional two‐step metal‐phenol chemistries, our integrated approach substantially simplifies the fabrication process ...
Rou‐Ming Wen   +8 more
wiley   +1 more source

3D MC. II. X-Ray Echoes Reveal a Clumpy Molecular Cloud in the CMZ

open access: yesThe Astronomical Journal
X-ray observations collected over the past decades have revealed a strongly variable X-ray signal within the Milky Way’s Galactic center, interpreted as X-ray echoes from its supermassive black hole, Sgr A*.
Danya Alboslani   +5 more
doaj   +1 more source

The abundance of interstellar C60 molecules toward BD+31°643 and other stars

open access: yesAstronomy & Astrophysics
Context. The diffuse interstellar bands (DIBs) at 9577 and 9632 Å are attributed to electronic transitions of the C60+ fullerene ion; thus, its column density in molecular clouds may be inferred.
Rouillé Gaël, Gredel Roland
doaj   +1 more source

Cosmic Rays and Molecular Clouds

open access: yes, 2012
ISBN 978-3-642-35409-0International audienceThis paper deals with the cosmic-ray penetration into molecular clouds and with the related gamma-ray emission.
Stefano Gabici, Gabici, S.
core   +1 more source

Long‐Chain Molecule Reconstruction of Novel Solvation Structure to Stabilize Zinc Metal Anode

open access: yesAdvanced Science, EarlyView.
Triethylene glycol diacetate (TGD), with unique long‐chain characteristics and rich oxygen‐containing functional groups, was used as an electrolyte additive to reconstruct the solvation structure. TGD can reduce the erosion of H2O molecules on the Zn anode, effectively homogenize the electric field distribution. Therefore, the Zn//Zn symmetric cell can
Changdong Chen   +6 more
wiley   +1 more source

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