Oxygen-free aqueous solutions of hydrogen cyanide, 0.1 M and pH ~6, were exposed to gamma rays from a 60Co source, the mixture of nonvolatile products was fractionated and the fractions were analysed. It has been found that the complex mixture contains oligomers and polymers with molecular weights up to 20,000 daltons, mainly polyamides with urea and peptidic fragments. Among the constituents are carbamyl glycinonitrile and carbamyl glycinamide that represent 6.4% and 3.1% of the total of unfracfionated material respectively. Urea content is 2.6%, but the derivatives of urea are more abundant. Acid hydrolysis releases several amino acids. Glycine is the most abundant (75% or more of total amino acid content), and its concentration considerably increases in some fractions when the hydrolysis is carried out at 130~ The role of free radicals in reactions leading to the formations of radiolytic products is considered. Some comparisons are made between findings in the present work, at initial pH ~6, and an earlier study of ammonium cyanide at pH 9.

This paper presents an approach for context modeling in complex self adapted systems consisting of many independent context-aware applications. The contextual information used for adaptation of all system applications is described by an ontology treated as a global context model. A local context model tailored to the specific needs of a particular application is defined as a view over the global context in the form of a feature model. Feature models and their configurations derived from the global context state are then used by a specific dynamic software product line in order to adapt applications at runtime. The main focus of the paper is on the realization of mappings between global and local contexts. The paper describes an overall model architecture and provides corresponding metamodels as well as rules for a mapping between feature models and ontologies.

The enzymatic digestion of some radiolytically produced peptidic materials was examined. The substrates were compounds isolated from 0.1 molar solutions of NH4CN (pH 9) and HCN (pH 6), after their exposure to gamma rays from a 60Co source (15-20 Mrad doses). Commercial proteolytic enzymes pronase and aminopeptidase M were used. The examined materials were of composite nature and proteolytic action was systematically observed after their subsequent purification. In some fractions the effect was found to be positive with up to 30% of peptide bonds cleaved with respect to the amino acid content. These findings support our previous conclusions on the free radical induced formation of peptidic backbones without the intervention of amino acids. Some side effects were also noted which might be of interest in observations on enzymatic cleavage of other composite peptidic materials of abiotic origin.

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 Observatory and other astronomical results obtained by the staff; 3) To develop the tools for visualization of data; 3) To develop together with Observatoire de Paris, STARK-B -database containing as the first step Stark widths and shifts of spectral lines, determined within the semiclassical perturbation approach by two of us (MSD-SSB) and to create a mirror site in Belgrade; 4) To make a mirror site for DSED (Darthmouth Stellar Evolution Database) in which development took part one of us (DJ). An additional aim is the creation of VAMDC (Virtual Atomic and Molecular Data Center) AOB (Astronomical Observatory of Belgrade) Node, and a recent objective is the collaboration with the Large Synoptic Telescope (LSST) project.In this contribution SerVO project is reviewed within the context of e-science in AstronomyAstroinformatics.

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