Tamara Gulyaeva

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Ionosphere plays an important role in High Frequency (HF) communications. In this paper, Global Ionospheric Maps (GIM) of Total Electron Content (TEC), maximum ionization height (hmF2) and critical frequency (foF2) of F2-layer are presented. These maps are obtained from the Nonlinear Least Squares (NLSQ) optimization of the International Reference(More)
We developed a model of hepatitis E virus infection in common marmosets (Callithrix jacchus) and determined optimal route of infection, duration, clinical and virological characteristics of infection in laboratory animals. Using this model, we demonstrated that replication of hepatitis E virus primarily occurs in the liver, while virus replication presumed(More)
GPS systems can give a good approximation of the Slant Total Electron Content in a cylindrical path between the GPS satellite and the receiver. International Reference Ionosphere extended to Plasmasphere (IRI-Plas) model can also give an estimation of the vertical electron density profile in the ionosphere for any given location and time, in the altitude(More)
In this study, the effects of height of the ionospheric thin shell, neighboring stations and satellite positions on the ionospheric pierce points are investigated by using the data obtained from TNPGN-Active GPS TRIMBLE receivers in Turkey and North Cyprus. For this purpose, Total Electron Content (TEC) value along the path between receiver and satellite,(More)
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