Results 101 to 110 of about 650,857 (339)

A Grid-constrained Fourier Neural Operator for Magnetic Field Extrapolation of the Solar Corona

open access: yesThe Astrophysical Journal
In this study, we propose a hybrid architecture for coronal magnetic field extrapolation modeling. This architecture integrates Fourier neural operators (FNOs) with grid-based finite-difference methods used to impose physical constraints and is named ...
Hao Yang   +5 more
doaj   +1 more source

Extinction Coefficient Inversion Algorithm with New Boundary Value Estimation for Horizontal Scanning Lidar

open access: yesRemote Sensing
Lidar has been used for many years to study the optical properties of aerosols, but estimating the boundary values requires solving the lidar elastic scattering equation, which remains a challenge.
Le Chen   +6 more
doaj   +1 more source

Variations of Solar Non-axisymmetric Activity [PDF]

open access: green, 2014
N. Gyenge, T. Baranyi, A. Ludmány
openalex   +1 more source

Ionospheric effects of the extreme solar activity of February 1986 [PDF]

open access: yes
During February 1986, near the minimum of the 11 year Solar sunspot cycle, after a long period of totally quiet solar activity (R sub z = 0 on most days in January) a period of a suddenly enhanced solar activity occurred in the minimum between solar ...
Boska, J., Pancheva, D.
core   +1 more source

Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production

open access: yesAdvanced Functional Materials, EarlyView.
Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen   +4 more
wiley   +1 more source

The Influence of Annealing on the Sb Layer in the Synthesis of [001]‐Oriented Sb2Se3 Film for Photoelectrochemical Hydrogen Gas Generation

open access: yesAdvanced Functional Materials, EarlyView.
[001]‐oriented Sb2Se3 film with improved crystallinity and adjusted composition is achieved via a new thermal treatment approach consisting of preliminary annealing of the Sb layer before its selenization. The findings of this work demonstrate enhanced charge carriers' transportation, a stable performance, and an improvement of H2 generation from ...
Magno B. Costa   +7 more
wiley   +1 more source

Multiwavelength Observations for a Double-decker Filament Channel in AR 13102

open access: yesThe Astrophysical Journal
We present the observational evidence of the existence of a double-decker filament channel (FC) by using observations in extreme ultraviolet and H α wavelengths.
Yin Zhang   +10 more
doaj   +1 more source

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

open access: yesAdvanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang   +7 more
wiley   +1 more source

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