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Fomichev A.A.,Novosibirsk State Pedagogical University | Marusik Y.M.,Russian Academy of Sciences
Arthropoda Selecta | Year: 2011

A survey of 14 species found in the Altai, for the first time is presented. The male of Dras-sodes katunensis Marusik, Hippa & Koponen, 1996, is described for the first time. Two species: Gnaphosa banini Marusik & Koponen, 2001, and Pardosa nenili-ni Marusik, 1995, are recorded from Russia for the first time. Species new to Russia and D. katunensis are illustrated. © 2011 Arthropoda Selecta. Source


Fomichev A.A.,Novosibirsk State Pedagogical University | Marusik Y.M.,Russian Academy of Sciences
Arthropoda Selecta | Year: 2011

A survey of 14 species found in the Altai, for the first time is presented. The male of Dras-sodes katunensis Marusik, Hippa & Koponen, 1996, is described for the first time. Two species: Gnaphosa banini Marusik & Koponen, 2001, and Pardosa nenili-ni Marusik, 1995, are recorded from Russia for the first time. Species new to Russia and D. katunensis are illustrated. © arthropoda selecta, 2011. Source


Fomichev A.A.,Novosibirsk State Pedagogical University | Marusik Y.M.,Russian Academy of Sciences | Koponen S.,University of Turku
Arthropoda Selecta | Year: 2014

A new species, Xysticus lehtineni sp.n., is described from South Siberia on the basis of both sexes. It is closely related to X. baltistanus (Ca-poriacco, 1935) known from northern Pakistan to northeastern Asia. The two species clearly differ in size, abdominal pattern, spination and in the shape of the copulatory organs (male palp and female epigy-ne). Most of the records of X. baltistanus from Tuva refer to this new species. © 2014 Arthropoda Selecta. Source


SCHULEIN E.,German Aerospace Center | TROFIMOV V.M.,Novosibirsk State Pedagogical University
Journal of Fluid Mechanics | Year: 2011

Large-scale longitudinal vortices in high-speed turbulent separated flows caused by relatively small irregularities at the model leading edges or at the model surfaces are investigated in this paper. Oil-flow visualization and infrared thermography techniques were applied in the wind tunnel tests at Mach numbers 3 and 5 to investigate the nominally 2-D ramp flow at deflection angles of 20°, 25° and 30°. The surface contour anomalies have been artificially simulated by very thin strips (vortex generators) of different shapes and thicknesses attached to the model surface. It is shown that the introduced streamwise vortical disturbances survive over very large downstream distances of the order of 104 vortex-generator heights in turbulent supersonic flows without pressure gradients. It is demonstrated that each vortex pair induced in the reattachment region of the ramp is definitely a child of a vortex pair, which was generated originally, for instance, by the small roughness element near the leading edge. The dependence of the spacing and intensity of the observed longitudinal vortices on the introduced disturbances (thickness and spanwise size of vortex generators) and on the flow parameters (Reynolds numbers, boundary-layer thickness, compression corner angles, etc.) has been shown experimentally. Source


Semenko E.V.,Novosibirsk State Pedagogical University
Journal of Applied and Industrial Mathematics | Year: 2010

Developing the idea to use Riemann surfaces for modeling flat flows, we completely classify all flows that can be modeled using the Riemann surface of genus 1 (the torus). © 2010 Pleiades Publishing, Ltd. Source

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