Petar Petrov

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For successful preservation operations, a preservation system needs to be capable of monitoring compliance of preservation operations to specifications, alignment of these operations with the organisation's preservation objectives, and associated risks and opportunities. This requires linking a number of diverse information sources and specifying complex(More)
Successful preservation of content requires sophisticated mechanisms for collecting, tracking and analyzing information about a multitude of relevant aspects. This is not limited to content itself, but also tracking of available software, other organization's content, usage statistics and trends, format risks, systems operations and many more. Such tracking(More)
Disclaimer This report provides an overview about the research on Digital Preservation of initiatives co-funded by the European Commission in the ICT programme. A subject as complex as the topic research can be seen from many points of view. In order to open new perspectives, we tried to give structured summaries of the activities from different angles. The(More)
Preserving digital information over the long term becomes increasing important for large number of institutions. The required expertise and limited tool support discourage especially small institutions from operating archives with digital preservation capabilities. Hoppla is an archiving solution that combines backup and fully automated migration services(More)
Lung injury is a frequent consequence of oxygen (O2) therapy administered to newborns and adults with respiratory distress. Acute exposure to hyperoxia results in a well-described pathophysiologic response in the lungs. Because inflammation is an important component of pulmonary O2 toxicity, we have an interest in identifying the inflammatory mediators that(More)
Periodic structures with dimensions on the order of the wavelength of light can tailor and improve the performance of optical components, and they can enable the creation of devices with new functionalities. For example, distributed Bragg reflectors (DBRs), which are created by periodic modulations in a structure's dielectric medium, are essential in(More)
The purpose of this investigation was to review the clinical cases diagnosed as systemic or extraintestinal salmonellosis between 2005 and 2010 in Bulgaria, to determine the antimicrobial resistance of the causative salmonellae, and to analyze the pulsed field gel electrophoresis (PFGE) profiles of extraintestinal Salmonella Corvallis isolates. Culture,(More)
Blood cells are receiving an increasing attention as an easily accessible source of transcript-based biomarkers. We studied the feasibility of using mouse whole blood RNA in this context. Several paradigms were studied: (i) metabolism-related transcripts known to be affected in rat tissues and peripheral blood mononuclear cells (PBMC) by fasting and upon(More)