Results 21 to 30 of about 546,299 (291)

Sporadic E signatures revealed from multi-satellite radio occultation measurements [PDF]

open access: yesAdvances in Radio Science, 2010
Radio occultation measurements performed by the satellites CHAMP, GRACE and FORMOSAT-3/COSMIC provide a huge data set for atmospheric and ionospheric investigations on a global scale.
C. Arras   +4 more
doaj   +1 more source

Ataxias esporádicas de início no adulto: um desafio diagnóstico [PDF]

open access: yes, 2014
Patients with adult onset non-familial progressive ataxia are classified in sporadic ataxia group. There are several disease categories that may manifest with sporadic ataxia: toxic causes, immune-mediated ataxias, vitamin deficiency, infectious diseases,
Albuquerque, Marcus Vinicius Cristino De   +3 more
core   +3 more sources

Simultaneous observation of sporadic E with a rapid-run ionosonde and VHF coherent backscatter radar [PDF]

open access: yesAnnales Geophysicae, 2006
During the SEEK 2 rocket campaign, ionograms were recorded every minute at the Yamagawa Radio Observatory at about 90km west of the region monitored by a VHF (very high frequency) coherent backscatter radar.
T. Maruyama   +3 more
doaj   +1 more source

A Statistical Analysis of Sporadic-E Characteristics Associated with GNSS Radio Occultation Phase and Amplitude Scintillations

open access: yesAtmosphere, 2022
Statistical GNSS-RO measurements of phase and amplitude scintillation are analyzed at the mid-latitudes in the local summer for a 100 km altitude. These conditions are known to contain frequent sporadic-E, and the S4-σϕ trends provide insight into the ...
Daniel J. Emmons   +2 more
doaj   +1 more source

Characterization of an emergent clone of enteroinvasive Escherichia coli circulating in Europe [PDF]

open access: yes, 2016
Enteroinvasive Escherichia coli (EIEC) cause intestinal illness indistinguishable from that caused by Shigella, mainly in developing countries. Recently an upsurge of cases of EIEC infections has been observed in Europe, with two large outbreaks ...
Caprioli, A.   +9 more
core   +1 more source

Sporadic-E associated with the Leonid meteor shower event of November 1998 over low and equatorial latitudes [PDF]

open access: yesAnnales Geophysicae, 2001
Rapid radio soundings were made over Ahmedabad, a low latitude station during the period 16–20 November 1998 to study the sporadic-E layer associated with the Leonid shower activity using the KEL Aerospace digital ionosonde.
H. Chandra   +6 more
doaj   +1 more source

Occurrence features of intermediate descending layer and Sporadic E observed over the higher mid-latitude ionospheric station of Moscow

open access: yesEarth, Planets and Space, 2023
Nine years of ionograms from a higher mid-latitude ionospheric station (Moscow) are analyzed, by applying the ‘height–time–intensity’ (HTI) technique along with Spectrum (Lomb periodogram) analysis with the aim to investigate the daily and seasonal ...
Christina Oikonomou   +4 more
doaj   +1 more source

Genotypic Characterization of Non-O157 Shiga Toxin–Producing Escherichia coli in Beef Abattoirs of Argentina [PDF]

open access: yes, 2011
The non-O157 Shiga toxin-producing Escherichia coli (STEC) contamination in carcasses and feces of 811 bovines in nine beef abattoirs from Argentina was analyzed during a period of 17 months.
Carbonari, Claudia Carolina   +9 more
core   +2 more sources

Sporadic E at Brisbane [PDF]

open access: yesAustralian Journal of Physics, 1956
Further data are presented in support of McNicol and Gipps's classification of two types of sporadic E at Brisbane (lat. 27?5 °S.), namely, sequential type (Ess) and constant-height type (Esc).
openaire   +1 more source

Effects of mesoscale gravity waves on sporadic E simulated by a one-dimensional dynamic model

open access: yesEarth and Planetary Physics
In addition to being driven by tidal winds, the sporadic E (Es) layers are modulated by gravity waves (GWs), although the effects are not yet comprehensively understood. In this article, we discuss the effects of mesoscale GWs on the Es layers determined
Xu Zhou, ZeZhong Li, XinAn Yue, LiBo Liu
doaj   +1 more source

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