Results 61 to 70 of about 3,517 (221)

An artificial neural network model in predicting VTEC over central Anatolia in Turkey

Geodesy and Geodynamics, 2023
This research investigates the capability of artificial neural networks to predict vertical total electron content (VTEC) over central Anatolia in Turkey.
Ali Özkan
doaj   +1 more source

VTEC - Is it a Food-borne Zoonosis?

Journal of Food Protection, 1990
Verotoxin-producing Escherichia coli (VTEC) have in recent years been incriminated as pathogens in at least two serious diseases: hemolytic uremic syndrome (HUS) and hemorrhagic colitis. In several instances, authors have implied that VTEC has been acquired from foods of animal origin, and that the ultimate reservoir for the agent is in the animals ...
openaire   +2 more sources

High‐Latitude GPS Position Error During Substorms

Space Weather, Volume 24, Issue 6, June 2026.
Abstract Substorms produce rapid fluctuations in Global Navigation Satellite System (GNSS) signals, leading to degraded positioning performance at high latitudes. This study investigates the correlation of auroral structures on Global Positioning System (GPS) Precise Point Positioning (PPP) error during three substorm events with different strengths ...
Weixuan Liao, Yukitoshi Nishimura, Waqar Younas, Wen Li, Keith M. Groves, Eric F. Donovan, Vassilis Angelopoulos   +6 more
wiley   +1 more source

Apixaban role in the treatment of venous thromboembolic complications in patients with active cancer

Атеротромбоз, 2020
The relationship of venous thromboembolic complications (VTEC) to cancer is well known. Modern recommendations for the treatment of VTEC in patients with cancer suggest treatment with subcutaneous injections of LMWH in the first 6 months.
E. P. Panchenko
doaj   +1 more source

Risk Assessment of Verocytotoxin-producing E. COLI (VTEC) in Danish pork

, 2005
Verocytotoxin-producing Escherichia coli (VTEC) is recognized as a food-borne pathogen of major importance. Infection by VTEC is known to cause a wide range of symptoms, from uncomplicated diarrhoea to haemorrhagic colitis, haemolytic uraemic syndrome ...
Lis Alban, Enøe, C., Hansen, Flemming, Pires, Sara, Scheutz, F., Scheutz, Flemming, Alban, L., Claes Enøe, Flemming Hansen, Pires, Sara Monteiro, Flemming Scheutz, Enøe, Claes, Alban, Lis, Hansen, F., Sara Monteiro Pires   +14 more
core   +1 more source

Quasi-biennial oscillation in GPS VTEC measurements [PDF]

, 2014
The quasi-biennial oscillation, QBO, a well known periodicity in the equatorial stratospheric zonal winds, is also found in ionospheric parameters and in solar and geomagnetic activity indices.
Fernandez, Laura Isabel, Meza, Amalia Margarita, Elias, Ana Georgina   +2 more
core   +1 more source

A High‐Efficiency Multivariable TEC‐SOFTS Model for Ionospheric TEC Prediction: Validation Over China Area During Low and High Solar Activity Periods

Space Weather, Volume 24, Issue 5, May 2026.
Abstract The ionospheric Total Electron Content (TEC) is a key parameter for characterizing the ionospheric properties. In this study, an efficient multivariable time series prediction model, TEC‐Series Core Fusion and efficient multivariable time series (TEC‐SOFTS), was constructed by combining multiple geomagnetic and solar activity indices ...
Chen Chen, Ling Huang, Wenwen Li, Dezhong Chen, Hongping Zhang, Yidong Lou, Lv Zhou   +6 more
wiley   +1 more source

Introducing Reflected GNSS TEC Data Into ANCHOR Ionospheric Data Assimilation Model

Space Weather, Volume 24, Issue 5, May 2026.
Abstract ANCHOR is a novel data assimilation (DA) algorithm developed at the U.S. Naval Research Laboratory to improve ionospheric nowcasting by increasing accuracy and decreasing computational cost. As a parameterized DA model, ANCHOR represents the ionosphere using physical parameters such as the F2 layer peak (Nm $Nm$F2), which characterizes a ...
Brenna Royersmith, Victoriya V. Forsythe, Brian Breitsch, Meghan R. Burleigh, Kate A. Zawdie, Y. Jade Morton   +5 more
wiley   +1 more source

VTEC, smittskydd på gårdsnivå [PDF]

, 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  

Updates, Examples and Validation of the Global Ionosphere Thermosphere Model

Space Weather, Volume 24, Issue 5, May 2026.
Abstract This study provides an updated description, example simulations, and validation of the Global Ionosphere Thermosphere Model (GITM). The updates to GITM include using an exothermic semi‐implicit chemistry scheme that no longer requires an altitude dependent heating efficiency; an ionospheric wind‐driven dynamo; improved neutral, ion, and ...
A. J. Ridley, C. Wu, A. Bukowski, J. Bell   +3 more
wiley   +1 more source