Results 71 to 80 of about 66,080 (263)

Transient Laser‐Shocked Synthesis of Amorphous Layer‐Supported Metal Nanocrystals for Efficient Nitrate Reduction

open access: yesAdvanced Materials, EarlyView.
A general, versatile laser‐shock synthesis process is reported to produce various bimetallic CuNi, CuFe, CuCo, and medium‐entropy CuFeCoNi heterostructures, in which crystalline metal nanoparticles are anchored to amorphous hydroxide supports. During nitrate reduction reaction, the heterostructures undergo dynamic amorphous/crystalline reconstruction ...
Weihua Guo   +18 more
wiley   +1 more source

Velocity Structure and Molecular Formation in the Polaris Molecular Cloud

open access: yesThe Astrophysical Journal
We present a wide-field $(60^{\prime} \times 30^{\prime} )$ study of a dense region within the Polaris Flare using ^12 CO, ^13 CO, and C ^18 O ( J  = 1–0) observations at 15″ resolution, obtained with the Nobeyama 45 m Radio Telescope.
Tomomi Shimoikura   +3 more
doaj   +1 more source

Interfacial Acid Sites‐Mediated ZnO‐Based Electrocatalysts for Sustainable Dual‐Pathway H2O2 Production and Rechargeable Zn‐H2O2 Electrochemical Cell

open access: yesAdvanced Materials, EarlyView.
In this work, a synergistic strategy introduces interfacial acid sites, oxygen vacancies, and built‐in electric field into ZnSe/ZnO heterojunction to optimize its electronic structure and electrode micro‐environment. This overcomes sluggish oxygen reduction reaction kinetics and low H2O2 selectivity, achieving record H2O2 productivity (754.4 M gcat−1 ...
Lijun Yang   +8 more
wiley   +1 more source

Cloud Tides Can Induce the Fast Disruption of Star Clusters and Offer an Explanation for Gaia Strings

open access: yesThe Astrophysical Journal
Young stars form in clusters within molecular clouds, but older stars are evenly distributed across the galactic disk, necessitating an explanation for cluster dissolution.
Xiao-Tong Chen, Guang-Xing Li
doaj   +1 more source

Hierarchical structure of the interstellar molecular clouds and star formation

open access: yesOpen Astronomy, 2017
Properties of the hierarchical structures of interstellar molecular clouds are discussed. Particular attention is paid to the statistical correlations between velocity dispersion and size, and between the magnetic field strength and gas density.
Dudorov Alexander E.   +1 more
doaj   +1 more source

A Dual‐Bioresponsive and Programmable Microneedle Matrix as a Bioinspired Coupler for Orchestrating Diabetic Bone Regeneration

open access: yesAdvanced Materials, EarlyView.
This project developed a smart bandage‐like patch (a microneedle array) for repairing diabetic bone damage. It intelligently senses signals from infection and inflammation, then releases its medicines in a specific, timed sequence: first an antibacterial agent, then an anti‐inflammatory agent, and finally growth factors.
Yu Wang   +10 more
wiley   +1 more source

The Stellar “Snake”. III. Coevolution of Stars and Molecular Clouds Unveiled by Gaia, MWISP, and LAMOST

open access: yesThe Astrophysical Journal Supplement Series
By combining multiband data from Gaia DR3, MWISP CO, and LAMOST DR11 low-resolution spectra/medium-resolution spectra (LRS/MRS), we investigate the coevolution of stars and their parent molecular cloud in a snakelike stellar structure, named Snake III ...
Jia-Peng Li   +4 more
doaj   +1 more source

Supernova remnants in molecular clouds [PDF]

open access: yesAIP Conference Proceedings, 1999
31 pages, 4 figures, revised, in press, ApJ, Feb.
openaire   +2 more sources

Electrically Tunable Heliconical Smectic Superstructure in Polar Fluids

open access: yesAdvanced Materials, EarlyView.
Strong dipole–dipole interactions give rise to an emergent polar smectic phase with spontaneous chiral symmetry breaking. This resulting polar heliconical smectic superstructure enables novel functionalities in polar fluids, such as color modulation driven by electric field strength and frequency, as well as second‐harmonic generation amplification ...
Hiroya Nishikawa   +5 more
wiley   +1 more source

A Study of the Physical Properties and Star Formation Activity of a Large Sample of Molecular Clouds. I. Distances

open access: yesThe Astrophysical Journal Supplement Series
Accurate distances to molecular clouds are crucial for determining their physical properties, understanding star formation, and tracing Galactic spiral structure.
Juan Mei   +10 more
doaj   +1 more source

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