Results 61 to 70 of about 4,114 (212)

Impacts of Mid‐Latitude Ionospheric Dynamics on RF Applications During the November 2025 Superstorm Event

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract This study demonstrates the intriguing and complex interplay among auroral precipitation, enhanced TEC, density irregularities, and amplitude scintillations observed during the November 2025 superstorm. For the first time, we present observations of strong amplitude scintillation across continental United States (CONUS)—nearly from coast to ...
E. Yizengaw   +7 more
wiley   +1 more source

Acoustic Wave Signatures of Earthquake Rupture Dynamics in the Upper Atmosphere

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract We perform three‐dimensional coupled earthquake‐atmosphere numerical simulations that integrate dynamic rupture, seismic wave propagation, and a compressible nonlinear atmospheric model to investigate how earthquake source parameters influence acoustic wave (AW) characteristics at 100–300 km altitude in the thermosphere.
Y. Kaneko   +5 more
wiley   +1 more source

vTEC data

open access: yes, 2020
Equivalent vertical TEC (vTEC) data have been obtained by receiver-independent exchange (RINEX) files containing GPS code and carrier phase observables acquired every 30 seconds by applying the Ciraolo et al. (J. Geodesy, 2007) method.
Tozzi, Roberta
core   +1 more source

A Refinement Method of Real-Time Ionospheric Model for China

open access: yesRemote Sensing, 2020
Ionospheric delay is a crucial error source and determines the source of single-frequency precise point positioning (SF-PPP) accuracy. To meet the demands of real-time SF-PPP (RT-SF-PPP), several international global navigation satellite systems (GNSS ...
Yang Wang   +3 more
doaj   +1 more source

Mapping Ethiopian ionosphere using ground-based GPS TEC

open access: yesCogent Engineering, 2022
The objective of this paper is to map regional ionospheric Total Electron Content (vTEC) using Global Positioning System (GPS) data from 10 different GPS receiver sites in Ethiopia, to capture ionospheric phenomena (such as storm effect, Equatorial ...
Seydie Mebrie, Tsegaye Kassa
doaj   +1 more source

The Impacts of Tropospheric Gravity Wave‐Generated MSTIDs on Skywaves at Mid‐latitude North American Sector Observed and Modeled Using SuperDARN HF Radars

open access: yesRadio Science, Volume 61, Issue 9, September 2026.
Abstract Trans‐ionospheric high frequency (HF: 3–30 MHz) response to atmospheric gravity waves (GWs) is studied in the middle‐latitude ionosphere in relation to thunderstorm activity. SuperDARN HF radar observations are compared against the model simulations to quantify the impact of GW‐generated medium‐scale traveling ionospheric disturbances (MSTID ...
S. Chakraborty   +5 more
wiley   +1 more source

Identificación molecular de subtipos DE VTEC O157:H7 aislados de reservorios, alimentos y casos clínicos [PDF]

open access: yes
Escherichia coli verotoxigénico (VTEC) O157:H7 es el serotipo mayormente involucrado en los casos de enfermedad en el mundo, y en Argentina, también el más frecuentemente asociado al síndrome urémico hemolítico (SUH).
González, Juliana
core   +1 more source

VTEC, smittskydd på gårdsnivå [PDF]

open access: yes, 2011
Verotoxinproducerande E. coli är en vatten- och livsmedelsburen patogen med nötkreatur som reservoar. Bakterien ger hos människa upphov till en enterohemorragisk sjukdom, i vissa fall med HUS, hemolytiskt uremiskt syndrom, som följd.
Hedvig, Stenberg
core   +1 more source

Comparacion entre Valores de Vtec Predichos por el Modelo Nequick2 y los Obtenidos a Partir de Gps sobre Boulder durante muy baja actividad Solar

open access: yesTecnología y Ciencia, 2019
Una especificación confiable del estado de la ionósfera dada por modelos empíricos es importante para mitigar los efectos que esta zona atmosférica produce sobre las operaciones de los sistemas de posicionamiento y navegación basadas en satélites.
Joaquín Marcelo Lopez   +4 more
doaj   +1 more source

Modern approaches to the prevention of venous thromboembolic complications in patients with active cancer

open access: yesАтеротромбоз, 2023
Cancer is one of the most significant risk factors for venous thromboembolic complications (VTEC), which combines deep vein thrombosis and pulmonary embolism. Of the many well-known risk factors for VTEC, only cancer is associated with a 4-fold increased
Yu. A. Fedotkina, E. P. Panchenko
doaj   +1 more source

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