Michail Ikonomou

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This study focuses on sea propagation environments and presents results on the characterization of the over-the-sea wideband mobile radio channel. Conducted measurements led to the development of path loss, log-distance models. The behavior of the power delay profile is also investigated in detail. In general, the mean excess delay and delay spread values(More)
This paper presents the results on mobile channel characterization for the above the sea propagation paths at 1.9 GHz. The study is based on measurement campaigns conducted in various locations, carefully selected in order to cover all kind of environments that can be met in the Aegean Sea. The purpose was to model the over-the-sea channel. This study(More)
This study focuses on the power delay profile (PDP) of sea propagation environments. Sounding measurements were conducted for above the sea mobile propagation channels aiming at the extraction and characterization of the channel's PDP. As concluded, PDP presents a discontinouous, and "spiky" shape. Line-of-sight propagation generally resulted in very small(More)
This study focuses on small scale characterization of sea propagation environments. Conducted measurements were used to extract results on the time dispersive and on the time variant nature of the channel. As concluded, power delay profile presents a singular, "spiky" shape. The delay parameters for line-of-sight propagation conditions are low, while in the(More)
The products of the reaction of the anticancer agent 1,3-bis(2-fluoroethyl)-1-nitrosourea (BFNU) and BFNU-1,1,1',1'-d4 with the DNA base deoxyguanosine were characterized by applying high-performance liquid chromatography (HPLC)/tandem mass spectrometry. The total effluent from the HPLC column was introduced into the atmospheric pressure ionization (API)(More)
An equation by D. P. H. Smith predicts the capillary voltage required for the onset of electrospray (ES). For different solvents the voltage increases with the square root of the surface tension. Water requires a potential that is 1.8 times higher than that for methanol. This is verified experimentally. The higher potential required for water leads to ES in(More)
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