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The recent observation of the frequent occurrence of natural recombinant Plum pox virus (PPV) isolates has led to the identification of a distinct PPV subgroup, named PPV-Rec. The diversity, origin and geographical spread of the recombinant PPV isolates belonging to this subgroup remain, however, relatively poorly known. In an effort to further our(More)
The genetic diversity of plum pox virus strain M (PPV-M) was assessed by analyzing 28 isolates collected in 8 European countries. Two genomic fragments spanning the (Cter)P3-6K1-(Nter)CI coding region as well as the full coat protein coding region were sequenced directly from PCR products. Phylogenetic analysis showed that the geographical origin of the(More)
The work on SerVO - Serbian virtual observatory (http://servo.aob.rs/~darko) started in 2008, with aims 1) To establish SerVO and join the EuroVO - European Virtual Observatory and IVOA - Inetrnational Virtual Observatory Alliance; 2) To create SerVO data Center for digitalization and archiving in VO format photo-plates from Belgrade Astronomical(More)
We investigate the extent to which the Wilson-Bappu relationship holds for chromospherically active binaries using the Mg ii h&k lines of 41 RS CVn stars observed with IUE. The resulting ts are diierent from the relationships obtained for single, less active stars. The parallax used were those from the hipparcos catalogue , these give a much better(More)
We present detailed radiative transfer spectral synthesis models for the Iron Low Ionization Broad Absorption Line (FeLoBAL) active galactic nuclei (AGN) FIRST J121442.3+280329 and ISO J005645.1-273816. Detailed NLTE spectral synthesis with a spherically symmetric outflow reproduces the observed spectra very well across a large wavelength range. While exact(More)
More than 40 different aphid species (Hemiptera: Aphididae) landing on plum and apricot trees were captured with Sticky shoot method and identified in the experimental orchards in Western Serbia during 2009–2011. The most abundant species found in 2009 and 2011 belongs to the genus Aphis. In 2010, Myzocallis spp. were most abundant. Specimens of the genus(More)
We investigate the extent to which the Wilson-Bappu relationship holds for chromospherically active binaries using the Mg ii h&k lines of 41 RS CVn stars observed with IUE. The resulting fits are different from the relationships obtained for single, less active stars. The parallax used were those from the hipparcos catalogue, these give a much better(More)
The development of space born astronomy, providing a huge amount of high quality astronomical data created an information avalanche and leaded to the formation of huge data collections. In order to address the problem how to analyse such amount of data, the idea of Virtual Observatory was formulated at the end of 2000, and from 2001 the FP5 project(More)