Results 21 to 30 of about 4,920,547 (298)

Modelling of the Electron Density and Total Electron Content in the Quiet and Solar X-ray Flare Perturbed Ionospheric D-Region Based on Remote Sensing by VLF/LF Signals

open access: yesRemote Sensing, 2021
Many analyses of the perturbed ionospheric D-region and its influence on the propagation of ground-based and satellite signals are based on data obtained in ionospheric remote sensing by very low/low frequency (VLF/LF) signals.
Aleksandra Nina
doaj   +1 more source

The Correlation between Ionospheric Electron Density Variations Derived from Swarm Satellite Observations and Seismic Activity at the Australian–Pacific Tectonic Plate Boundary

open access: yesRemote Sensing, 2023
Swarm electron density (Ne) observations from the Langmuir probe (LP) can detect ionospheric disturbances at the altitude of a satellite. Along-track satellite observations provide a large number of very short observations of different places in the ...
Wojciech Jarmołowski   +9 more
doaj   +1 more source

Extending Libraries of Extremely Localized Molecular Orbitals to Metal Organic Frameworks: A Preliminary Investigation

open access: yesCrystals, 2021
Libraries of extremely localized molecular orbitals (ELMOs) have been recently assembled to reconstruct approximate wavefunctions of very large biological systems, such as polypeptides and proteins.
Erna K. Wieduwilt   +4 more
doaj   +1 more source

The estimation of D-region electron densities from riometer data [PDF]

open access: yes, 2003
International audienceAt high latitude the hard electron precipitation associated with auroral activity is a major source of ionization for the D-region, one consequence being the absorption of radio waves.
M. Friedrich   +3 more
core   +2 more sources

The electron density: a fidelity witness for quantum computation [Elektronisk resurs]

open access: yes, 2023
There is currently no combination of quantum hardware and algorithms that can provide an advantage over conventional calculations of molecules or materials.
Lolur, Phalgun,   +8 more
core   +1 more source

Efficient numerical simulation of atmospheric pulsed discharges by introducing deep learning

open access: yesFrontiers in Physics, 2023
Plasma simulation is an important but sometimes time-consuming approach to study the discharge behaviors of atmospheric pulsed discharges. In this work, an efficient simulation method is proposed by introducing deep learning to investigate the discharge ...
Yuan-Tao Zhang, Shu-Han Gao, Fei Ai
doaj   +1 more source

Electron densities in planetary nebulae [PDF]

open access: yesThe Astrophysical Journal, 1989
A large sample of forbidden lines -[O II], [S II], [Ar IV], and [N I]- have been analyzed to obtain electron densities for 134 planetary nebulae.
Letizia Stanghellini, James B. Kaler
openaire   +1 more source

A coordinated ground-based and IMAGE satellite study of quiet-time plasmaspheric density profiles [PDF]

open access: yes, 2003
Cold plasma mass density profiles in the plasmasphere have been determined for the geomagnetically quiet day of 19th August 2000 using the cross-phase technique applied to ground-based magnetometer data from the SAMNET, IMAGE and BGS magnetometer arrays.
Ozeke, L.G.   +6 more
core   +4 more sources

Electron Wavefunctions and Densities for Atoms [PDF]

open access: yesAnnales Henri Poincaré, 2001
With a special `Ansatz' we analyse the regularity properties of atomic electron wavefunctions and electron densities. In particular we prove an a priori estimate, $\sup_{y\in B(x,R)}|\nablaψ(y)| \leq C(R) \sup_{y\in B(x,2R)}|ψ(y)|$ and obtain for the spherically averaged electron density, $\widetildeρ(r)$, that $\widetildeρ''(0)$ exists and is non ...
Hoffmann-Ostenhof, Maria   +2 more
openaire   +3 more sources

Equations for the Electron Density of the Two-Dimensional Electron Gas in Realistic AlGaN/GaN Heterostructures

open access: yes, 2021
This paper presents equations for the electron density of the two-dimensional electron gas (2DEG) in AlGaN/GaN heterostructures in three realistic scenarios: (1) AlGaN/GaN heterostructure with surface exposed to ambient with mobile ions, (2) metal gate ...
Sima Dimitrijev   +7 more
core   +1 more source

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