52 research outputs found
Rate coefficients of exchange reactions accounting for vibrational excitation of reagents and products
No full textEffect of dipole orientation on Purcell factor for the quantum emitter near silicon nanoparticle
No full textCampsites of the Southern Urals Nomads in the Middle of the I Millennium BC (according to data from the Bannoye – Sabakty – Karabalykty Lake System)
No full textThe paper deals with the materials from three sites, namely the settlement Bannoye-5a (Berezki), Telyashevo-4 and Sabakty-3/5. They are discovered with ceramics of the early nomads (late V – late IV century BC). All these sites are situated within a narrow strip of mountain steppes along the eastern slope of the Southern Urals (modern Abzelilovsky district of the Republic of Bashkortostan). It is on the same latitude as Magnitogorsk. The settlement Bannoye-5a (Berezki) was studied in 1972–1976 and 2004–2005. The received materials were analyzed and showed three points of spread early nomadic ceramics. Two of them were revealed by excavations and are rather small in size. Also a similar situation was at Telyashevo-4 settlement. It is shown that all three sites can be interpreted as nomadic campsites. When the author analyzes all the information about the spread area of Southern Ural nomads in the middle of the I millennium BC, the author can conclude that the campsites and other types of settlements close to them were quite common (more than 30 sites are currently recorded). It is particularly complicated to find and register such kind of sites, however, studying them is the only way to learn something new about their household, spread and land development
On the Southern Border of the Forest and Forest-Steppe Cultures in the Urals in the Ist Millennium BC
No full textThe article demonstrates that the central part of South Ural Mountains with surrounding foot-hills was a special transzonal territory, where the natural conditions prevented development of homogenous and stable ethnic and cultural formations in the central part of the South-Ural region. In the I Millennium BC, this region accepted numerous groups of forest and northern forest-steppe population who continuously migrated here from the north and lived in the immediate vicinity to the steppe nomads. The author identified three main itineraries of such groups migrating to the south. A number of laws of interaction of forest and northern forest-steppe early Iron Age population was considered, both among themselves and with the nomads
Mathematical Modeling of an Environment Control System in the Framework of Creating a Comprehensive Mathematical Model of Aircraft On-Board Systems
No full textWave scattering by metal-dielectric multilayer structures with gain
No full textWe study wave scattering by multilayer metal-dielectric structures of a finite extent characterized by a hyperbolic-like dispersion. We find the regimes of wave propagation when substantial compensation of losses becomes possible with the use of a gain medium with realistic parameters. We discuss the Purcell effect in these structures and its possible implications on the performance of the loss compensation.This work
was supported by the Ministry of Education and
Science of the Russian Federation (project
no. 11.G34.31.0020, state contract no. 2014/190,
contract no. 3.561.2014/K), by the Council for an
Increase in the Competitiveness of the Leading Uni
versities of the Russian Federation (project no. 074
U01), by the Dynasty Foundation (Russia), and by the
Australian Research Council (Future Fellowship and
Discovery Project Programs)
Mathematical Modeling of the No-bleed Air Conditioning System for an Advanced Passenger Aircraft
No full textShifts in the Genetic Landscape of the Western Eurasian Steppe Associated with the Beginning and End of the Scythian Dominance
No full textThe Early Iron Age nomadic Scythians have been described as a confederation of tribes of different origins, based on ancient DNA evidence [1–3]. It is still unclear how much of the Scythian dominance in the Eurasian Steppe was due to movements of people and how much reflected cultural diffusion and elite dominance. We present new whole-genome sequences of 31 ancient Western and Eastern Steppe individuals, including Scythians as well as samples pre- and postdating them, allowing us to set the Scythians in a temporal context (in the Western, i.e., Ponto-Caspian Steppe). We detect an increase of eastern (Altaian) affinity along with a decrease in eastern hunter-gatherer (EHG) ancestry in the Early Iron Age Ponto-Caspian gene pool at the start of the Scythian dominance. On the other hand, samples of the Chernyakhiv culture postdating the Scythians in Ukraine have a significantly higher proportion of Near Eastern ancestry than other samples of this study. Our results agree with the Gothic source of the Chernyakhiv culture and support the hypothesis that the Scythian dominance did involve a demic component. Järve et al. present 31 ancient Scythians and samples from pre- and postdating cultures from the Eurasian Steppe. An increase of eastern ancestry in the steppe during the Scythian period supports some demic diffusion in the spread of the Scythian culture. The genetic makeup of post-Scythian Chernyakhiv individuals agrees with their Gothic source
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