Space Weather, 2022 A newly released, novel ionospheric data set of global gridded vertical total electron content (VTEC) is introduced in this paper. This VTEC data set, provided by Los Alamos National Laboratory (LANL), is derived from very high frequency (VHF; defined as
Erin H. Lay +9 more
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High-precision VTEC derivation with GEONET [PDF]
Earth, Planets and Space, 2020 AbstractThis paper proposes a new technique, namely Phase bias-based Small Grid Model (PSGM), to derive absolute ionospheric vertical total electron content (VTEC) with observations of Global Navigation Satellite System Earth Observation Network of Japan (GEONET).
Qi Li +7 more
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Antibiotic resistance among verocytotoxigenic Escherichia coli (VTEC) and non-VTEC isolated from domestic animals and humans [PDF]
Journal of Medical Microbiology, 2003 Two hundred verocytotoxigenic and 216 non-verocytotoxigenic Escherichia coli (VTEC and non-VTEC), isolated from a variety of sources were tested for their resistances to 11 antimicrobial agents. The strains included isolates from domestic food animals and both symptomatic and asymptomatic infections in man.
Karl A, Bettelheim +3 more
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Assessment of Dynamic Mode Decomposition (DMD) Model for Ionospheric TEC Map Predictions
Remote Sensing, 2023 In this study, we assess the Dynamic Mode Decomposition (DMD) model applied with global ionospheric vertical Total Electron Content (vTEC) maps to construct 24-h global ionospheric vTEC map forecasts using the available International GNSS Service (IGS) 2-
Vlad Landa, Yuval Reuveni
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Ionospheric response to the 2009 sudden stratospheric warming over the equatorial, low, and middle latitudes in the South American sector [PDF]
, 2015 The present study investigates the ionospheric total electron content (TEC) and F-layer response in the Southern Hemisphere equatorial, low, and middle latitudes due to major sudden stratospheric warming (SSW) event, which took place during January ...
Coster, A. J. +8 more
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The public health significance of VTEC O157 [PDF]
Journal of Applied Microbiology, 2000 Surveillance of human VTEC O157 has been reported in several countries, based on laboratory evidence. The incidence is generally less than 10 per 100000 (the highest incidence is in children), with regional variations and a marked seasonality. Laboratory selection criteria and reporting have contributed to, but cannot entirely explain, variations ...
S M, Parry, S R, Palmer
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Geodesy and Geodynamics, 2014 An earthquake with a magnitude of Ms7.3 hit Yutian in the Xinjiang Uygur Autonomous Region on February 14, 2014. This research investigates the interference phenomena in solar activities and geomagnetics, and adopts the quartile method to analyze the ...
Wang Xinzhi +3 more
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Limits on the validity of the thin-layer model of the ionosphere for radio interferometric calibration [PDF]
, 2016 For a ground-based radio interferometer observing at low frequencies, the ionosphere causes propagation delays and refraction of cosmic radio waves which result in phase errors in the received signal.
Bray, Justin D. +2 more
core +2 more sources
A study on association of virulence determinants of verotoxic Escherichia coli isolated from cattle calves [PDF]
Veterinary World, 2016 Aim: The present study was conducted to find the association among virulence determinants of verotoxic Escherichia coli (VTEC) isolated from cattle calf feces.
Singh Parul +4 more
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The Frequency of Stx1 and Stx2 Genes in Uropathogenic Escherichia coli Isolated From Patients in Kermanshah, Iran [PDF]
Journal of Epigenetics, 2020 1) Background: Uropathogenic E. coli (UPEC) is responsible for 70-90% of urinary tractinfections. On the other hand, E. coli producing Shiga toxin (STEC), the so-called Verotoxinproducing E.
Azadeh Foroughi +1 more
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