Light Curve Models of Supernovae and X-ray spectra of Supernova Remnants

We compare parameters of well-observed type II SN1999em derived by M.Hamuy and D.Nadyozhin based on Litvinova-Nadyozhin (1985) analytic fits with those found from the simulations with our radiative hydro code Stella. The difference of SN parameters is quite large for the long distance scale. The same code applied to models of SN1993J allows us to estimate systematic errors of extracting foreground extinction toward SN1993J suggested by Clocchiatti et al. (1995). A new implicit two-temperature hydro code code Supremna is introduced which self-consistently takes into account the kinetics of ionization, electron thermal conduction, and radiative losses for predicting X-ray spectra of young supernova remnants such as Tycho and Kepler.Comment: 7 pages, 10 figures, Supernovae as Cosmological Lighthouses, Padua, June 16- 19, 2004, eds. M.Turatto et al., ASP Conference Serie

Stability of Triple Star Systems with Highly Inclined Orbits

It is well established that certain detached eclipsing binary stars exhibit apsidal motions whose value is in disagreement with with calculated deviations from Keplerian motion based on tidal effects and the general theory of relativity. Although many theoretical senarios have been demonstrated to bring calculations into line with observations, all have seemed unlikely for various reasons. In particular, it has been established that the hypothesis of a third star in an orbit almost perpendicular to the orbital plane of the close binary system can explain the anomalous motion in at least some cases. The stability of triple star systems with highly inclined orbits has been in doubt, however. We have found conditions which allow the long term stability of such systems so that the third body hypothesis now seems a likely resolution of the apsidal motion problem. We apply our stability criteria to the cases of AS Cam and DI Her and recommend observations at the new Keck interferometer which should be able to directly observe the third bodies in these systems.Comment: edited to match published versio

Influence of Filler Metals in Welding Wires on the Phase and Chemical Composition of Weld Metal

The influence of filler metals used in welding wires on the phase and chemical composition of the metal, which is surfaced to mining equipment exposed to abrasive wear, has been investigated. Under a laboratory environment, samples of Mo-V-B and Cr-Mn-Mo-V wires were made. The performed experiments have revealed that fillers of the Cr-Mn-Mo-V system used in powder wire show better wear resistance of the weld metal than that of the Mn-Mo-V-B system; the absence of boron, which promotes grain refinement in the Mn-Mo-V-B system, significantly reduces wear resistance; the Mn-Mo-V-B weld metal has a finer structure than the Cr-Mn-Mo-V weld metal

The regions of parametric instability of brush-contact device electromagnetic circuit in unstable working conditions

The method to determine parametric instability regions of the electromagnetic circuit of the secluded brush contact of brush-contact device with using the oscillation equation  Mathieu II order for a dissipative system with one degree of freedom is developed. Recommendations on the selection of the parameters of the external damping device to eliminate the instability of electromagnetic waves in unstable working conditions brush-contact device are  given

ПАТРИОТИЧЕСКАЯ НАПРАВЛЕННОСТЬ МОЛОДЁЖИ НА ПРИМЕРЕ ОРЛОВСКОЙ ОБЛАСТИ

The results of the research, which was conducted in 2015 among the students and pupils of the Orel region with the purpose to identificate the Patriotic qualities among the representatives of the youth, are presented in the article. A comparative analysis of different age categories (8-graders (14–15 years), 11th graders (16–17 years) and University students (18–22 years) was made on the grounds of the results of the research. It shows a reduction in the level of patriotism at student age. We need to find fundamentally new ways for the effective solution of the problem of patriotic purposefulness of young people, whose will not lead to losing the Patriotic qualities with age, but to its increase and multiplication.В статье приведены результаты исследования, проведенного в 2015 году среди студентов и школьников Орловской области с целью выявления у представителей молодёжи патриотических качеств. По результатам исследования сделан сравнительный анализ развитости патриотических качеств в разных возрастных категориях (8-классники (14–15 лет), 11-классники (16–17 лет) и студенты (18–22 года) и выявлено их снижение к студенческому возрасту. Для эффективного решения проблемы патриотической направленности молодёжи требуется искать принципиально новые пути, которые будут приводить не к потере уже имеющихся патриотических качеств с возрастом, а к их усилению и преумножению