Results 21 to 30 of about 478,207 (326)

Instability Mechanisms for the F‐Region Plasma Irregularities Inside the Midlatitude Ionospheric Trough: Swarm Observations

open access: yesSpace Weather, 2021
The midlatitude ionospheric trough (MIT) is a well‐known feature in the topside ionosphere. Previous MIT related studies mainly focused on the MIT structure itself, while few studies focused on irregularities inside the MIT region.
Yiwen Liu   +6 more
doaj   +1 more source

Climatology Characteristics of Ionospheric Irregularities Described with GNSS ROTI

open access: yesRemote Sensing, 2020
At equatorial and high latitudes, the intense ionospheric irregularities and plasma density gradients can seriously affect the performances of radio communication and satellite-based navigation systems; that represents a challenging topic for the ...
K. Kotulak   +5 more
semanticscholar   +1 more source

Legal aspects of protection of the financial interests of the European Union [PDF]

open access: yesPrzegląd Europejski, 2019
The foundations and the operating framework of the institutions of the European Union and its Member States are determined by legal acts established at the EU level.
Marta Miedzińska
doaj   +1 more source

Origin and Distribution of Daytime Electron Density Irregularities in the Low‐Latitude F Region

open access: yesJournal of Geophysical Research - Space Physics, 2020
Electron density irregularities on the dayside in the low‐latitude F region are understood as remnants (or fossils) of nighttime plasma bubbles. We provide observational evidence of the connection of daytime irregularities to nighttime bubbles and the ...
H. Kil, W. Lee, L. Paxton
semanticscholar   +1 more source

A brief review of equatorial ionization anomaly and ionospheric irregularities

open access: yes, 2018
Following a brief history and progress of ionospheric research, this paper presents a brief review of the recent developments in the understanding of two major phenomena in low and mid latitude ionosphere—the equatorial ionization anomaly (EIA) and ...
N. Balan, Libo Liu, H. Le
semanticscholar   +1 more source

Quantitative irregularity analysis for spinning detonation of premixed CH4+2O2

open access: yes工程科学学报, 2016
CH4 is a typical and special detonation mixture. Based on the experimental method, digital image processing was performed to study the detonation stability theory of methane. A premixed CH4 + 2O2 mixture was ignited in a tube with an inner diameter of 50.
ZHAO Huan-juan   +2 more
doaj   +1 more source

Principles of accounting in the Duchy of Warsaw – problems with cash accounts [PDF]

open access: yesZeszyty Teoretyczne Rachunkowości
Purpose: The aim of the article is to present the accounting principles used in the Duchy of Warsaw (1807–1815) and to provide arguments that support these principles.Methodology/approach: The methodology involves analyzing historical sources, con ...
MAŁGORZATA GARSTKA
doaj   +1 more source

Ionospheric Plasma Irregularities Characterized by the Swarm Satellites: Statistics at High Latitudes

open access: yesJournal of Geophysical Research: Space Physics, 2019
The polar ionosphere is often characterized by irregularities and fluctuations in the plasma density. We present a statistical study of ionospheric plasma irregularities based on the observations from the European Space Agency's Swarm mission.
Yaqi Jin   +6 more
semanticscholar   +1 more source

Search for Spectral Irregularities due to Photon-Axionlike-Particle Oscillations with the Fermi Large Area Telescope. [PDF]

open access: yesPhysical Review Letters, 2016
We report on the search for spectral irregularities induced by oscillations between photons and axionlike-particles (ALPs) in the γ-ray spectrum of NGC 1275, the central galaxy of the Perseus cluster.
M. Ajello   +101 more
semanticscholar   +1 more source

Random Response Analysis of Axle-Box Bearing of a High-Speed Train Excited by Crosswinds and Track Irregularities

open access: yesIEEE Transactions on Vehicular Technology, 2019
The Axle-box bearing (ABB) is a key component in the high-speed train which suffers multiple stochastic excitations in realistic working conditions. The ABB's health status is crucial for the reliable and safe operation of the rolling stock.
Zhiwei Wang   +4 more
semanticscholar   +1 more source

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