The aerodynamics of a jet of particles in a channel

The main cause for dust discharge is ejection, i.e. formation of directional air flows in a stream of a bulk material due to the dynamic interaction of bombarding particles with air. Discovery of induced air flow occurrence regularities enables both forecasting the level of air pollutions with aerosol emission and choosing the optimum engineering solutions of air containment and dedusting. So far we have studied solid particles flowing in a chute and a jet of loose matter. Both situations represent extreme cases of the more general problem of material flowing through a duct with different distances between flow boundaries and duct walls. Without detriment to generality of the problem we shall consider a flat flow limited by vertical walls

Variations of cosmic rays according to the data of interplanetary probes Zond-3 and Venus-2

Cosmic ray intensity variation measured by Zond 3 and Venus 2 interplanetary probe

Radial diffusion of electrons with energy greater than 100 keV in the outer radiation belt

Electron diffusion and intensity variations in outer radiation bel

Increase of the resource of machine parts working by combined methods using plasma electrolytic oxidation

© 2018 Institute of Physics Publishing. All rights reserved. The paper presents the results of a study of the physicomechanical properties of oxide-ceramic coatings formed by plasma electrolytic oxidation on various aluminum alloys. It has been found that filling the pores of an oxide-ceramic coating with oil or applying a copper layer to its surface with a friction-mechanical method increases the wear resistance of movable joints of machine parts by 1.7 times and 4.5 times, respectively. Based on the complex of studies carried out, combined methods are proposed that significantly increase the life of reinforced parts of machines in operation

Distribution of Tryptophan-Dependent <I>Yersinia pestis</I> Variants in the Altai Mountain Natural Plague Focus

Carried out is the analysis of spatial location of tryptophan-dependent variants of plague microbe in the territory of Altai mountain plague natural focus. 1166 Y. pestis strains isolated in 1990–2010, were studied as regards nutrient requirements. 140 of them (12 %) were determined as tryptophan-dependent. The highest occurence of such strains was registered in Ulandryk focal region (21.6 % in average). Among strains isolated in Tarkhatin focal region only 2.3 % were tryptophan-dependent, and in Kuray region they were absent. Thus, the data obtained suggest that spatial heterogeneity of Y. pestis subsp. altaica in the focus takes place

Environmental and Technological Aspects of Converter Slag Utilization in Sintering and Blast-Furnace Production

Political and Cultural Transfers in a Time of Revolution. The Netherlands 1795-1805One of the hallmarks of modern historiography is its strong engagement with the national scene. Yet despite this, European countries have always exchanged ideas and practices and influenced each other. This was the case, for example, between 1795 and 1805, during which period the Dutch had to rethink their society and their government. To do this, they entered into a deep and creative dialogue with France in particular, as well as America. The manner in which this took place and its consequences are explored in this paper

Measurement of the branching fraction of J/ψ→ρπJ/\psi\rightarrow\rho\pi at KEDR

We present the study of the decay $J/\psi \rightarrow \rho \pi$. The results are based on of 5.2 million $J/\psi$ events collected by the KEDR detector at VEPP-4M collider. The branching fraction is measured to be $\mathcal{B}(J/\psi\rightarrow\rho\pi) = \big(2.072\pm 0.017 \pm 0.056 \big)\cdot 10^{-2}$ where the first uncertainty is statistical, the second one is systematic. This is the most precise single measurement of this quantity at the moment

ATF2 Proposal

ATF2 Group Accelerator Physic

Energetic particle influence on the Earth's atmosphere

This manuscript gives an up-to-date and comprehensive overview of the effects of energetic particle precipitation (EPP) onto the whole atmosphere, from the lower thermosphere/mesosphere through the stratosphere and troposphere, to the surface. The paper summarizes the different sources and energies of particles, principally galactic cosmic rays (GCRs), solar energetic particles (SEPs) and energetic electron precipitation (EEP). All the proposed mechanisms by which EPP can affect the atmosphere are discussed, including chemical changes in the upper atmosphere and lower thermosphere, chemistry-dynamics feedbacks, the global electric circuit and cloud formation. The role of energetic particles in Earth’s atmosphere is a multi-disciplinary problem that requires expertise from a range of scientific backgrounds. To assist with this synergy, summary tables are provided, which are intended to evaluate the level of current knowledge of the effects of energetic particles on processes in the entire atmosphere

навчальний посібник

Психологія у професійній діяльності поліції : навч. посіб. / [О. О. Євдокімова, І. В. Жданова, Д. В. Швець та ін.] ; за заг. ред. В. В. Сокуренка; МВС України, Харків, нац. ун-т внутр. справ. - Харків, 2018. - 426 с.Навчальний посібник підготовлено відповідно до навчальних програм з дисциплін «Професійно-психологічна підготовка працівників поліції», «Юридична психологія», «Практична психологія». У посібнику висвітлено загальні та спеціальні психологічні питання професійної діяльності поліції. Рекомендується для використання в освітньому процесі підготовки поліцейських; у професійній діяльності працівників Національної поліції.The manual has been prepared in accordance with the curriculum for the disciplines "Professional psychological training of police officers", "Legal psychology", "Practical psychology". The manual covers general and special psychological issues of professional police work. Recommended for use in the educational process of training police officers; in the professional activities of employees of the National Police.Учебное пособие подготовлено в соответствии с учебными программами по дисциплинам «Профессионально-психологическая подготовка сотрудников полиции», «Юридическая психология», «Практическая психология». В пособии освещены общие и специальные психологические вопросы профессиональной деятельности полиции. Рекомендуется для использования в образовательном процессе подготовки полицейских; в профессиональной деятельности работников Национальной полиции