Obtaining Sulfur from Sulfur Hexafluoride and Studying the Sulfur Isotopes Properties by Using Vibrational Spectroscopy

Scheme of isotopically enriched SF[6] to elemental sulfur with orthorhombic modification conversion is offered. This scheme includes SF[6] reduction to Li2S by using lithium. The yield of isotopically enriched sulfur is not less than 97% with chemical purity not less than 99.9%. The results which show the dependence of the experimental frequencies in the vibrational spectra on the molecular weight of the sulfur isotope have been obtained

Comparative Assessment of Innovative Development of the Far North Regions

The paper deals with the assessment of the level of innovative development of the Northern regions. Based on the data of the annual rating of innovative economies, performed by Bloomberg, a comparative analysis of the rating of innovative economies in the Nordic countries is presented. It is noted that Russia has been consistently ranked 25–27 in the last four years, although in 2016, it was in the 12th place. An overview analysis of methodological approaches and methods for assessing the level of innovative development of a region in Russia is carried out. On the basis of statistical data on the composite integral index, a comparative assessment of the level of innovative development of 17 regions of the Far North of the Russian Federation for 2017 is carried out, and the corresponding ranks are analyzed separately for 5 sub-indices of thematic blocks: socio-economic conditions, scientific and technical potential, innovation activity, export activity and the quality of regional innovation policy. The study shows a significant difference between the regions of the Far North of the Russian Federation in terms of the level of innovative development. In five subjects of the Far North of the Russian Federation, the values of the composite innovation index are higher than the average for the Russian Federation. Different positions occupied by regions are also observed in the rankings for individual sub-indices. The results of such ratings make it possible to assess the comparative advantages and disadvantages of specific regions for further consideration in the program documents on their innovative development

Innovative Development in Northern Russia Assessed by Triple Helix Model

This paper considers issues related to assessing the level of innovative development in the northern regions of Russia. A comparative assessment of the level of innovative development in seven regions of the Far North of Russia (FNR) for 2017 was carried out based on statistical data from the composite integrated index. A version of the Triple Helix (TH) econometric model served as the foundation for the assessment. This article presents the analytical results according to three elements of the TH model: the effectiveness of research and development (science), the effectiveness of innovation (industry), and budget expenditure on science and innovation (government). Regional innovative profiles were built during the analysis, which helped identify the strengths and weaknesses of the influence of science, business, and government on the development of innovative activities in the region. The results of such ratings make it possible to assess the comparative advantages and disadvantages of specific regions for further analysis. The data can be used in program documents on the region’s innovative development. The methodology proposed for an innovation activity rating can help predict the main development trends of the entire territory of the Far North. Finally, it can be applied to other regions and countries if relevant statistical information is available

Biological Earth observation with animal sensors

Space-based tracking technology using low-cost miniature tags is now delivering data on fine-scale animal movement at near-global scale. Linked with remotely sensed environmental data, this offers a biological lens on habitat integrity and connectivity for conservation and human health; a global network of animal sentinels of environmen-tal change

Observation of Fine Time Structures in the Cosmic Proton and Helium Fluxes with the Alpha Magnetic Spectrometer on the International Space Station

International audienceWe present the precision measurement from May 2011 to May 2017 (79 Bartels rotations) of the proton fluxes at rigidities from 1 to 60 GV and the helium fluxes from 1.9 to 60 GV based on a total of $1 \times 10^9$ events collected with the Alpha Magnetic Spectrometer aboard the International Space Station. This measurement is in solar cycle 24, which has the solar maximum in April 2014. We observed that, below 40 GV, the proton flux and the helium flux show nearly identical fine structures in both time and relative amplitude. The amplitudes of the flux structures decrease with increasing rigidity and vanish above 40 GV. The amplitudes of the structures are reduced during the time period, which started one year after solar maximum, when the proton and helium fluxes steadily increase. Above $\sim 3$  GV the p/He flux ratio is time independent. We observed that below $\sim 3$  GV the ratio has a long-term decrease coinciding with the period during which the fluxes start to rise

Technological processes intensification in devices with magneto-fluidized bed

The paper shows the efficiency of application of magneto-fluidized bed formed of ferromagnetic materials in press-forms dosed filling and milling devices. For powders without natural fluidity, dosing device is situated between electromagnets creating constant magnetic field with horizontal induction lines and alternating gradient magnetic field with vertical induction lines and higher induction gradient in the lowest part of chamber with powder. This configuration allows development of uniform efflux speed of ferromagnetic powders from 2 mm diameter opening. For example, mass efflux speed of strontium ferrite powder with 1 μm average particle size in magneto-fluidized bed reached 181.1 mg/s and the dosing time of 2000 mg of this powder was 11.1 s. For practical usage of magneto-fluidized bed in the milling device, beater mill is situated between electromagnet poles in the way that induction lines of constant and alternating gradient magnetic fields were mutually perpendicular and parallel to the plane of rotating beaters. Milling of particulate strontium ferrite with 1558.5 μm average particle size during 120 minutes in magneto-fluidized bed allows increasing milling degree in 16.2 times by comparison with processing without electromagnetic effect

Recycled strontium hexaferrite powder behavior in the magneto fluidized state in dependence of the chamber fill factor

The magnetic powders affected by external magnetic fields can be transferred in the pseudo fluidized state to intensify the process of permanent magnets production. The behavior of the fluidized fine strontium hexaferrite powder with an average particle size 0.93 μm obtained by recycling old electric engine stators was studied. Mutually perpendicular constant and alternating gradient magnetic fields were used to form the magneto fluidized bed from the powder. The rheology state of the magnetic powder can be controlled by the parameters of the electromagnetic fields. The powder was affected by a constant field with induction values from 3 mT to 43 mT and alternating gradient magnetic field with induction gradient values from 87 mT/m to 317 mT/m. The chamber bulk fill varied from 4% to 100%. To study the rheological state of the powder in the chamber, we used an inductive method – an inductive coil was put on the chamber and the moving powder particles induced the current in the coil. The values of the current allowed to estimate the mobility of the powder particles in the magneto fluidized bed. The paper presents the results of experimental studies how electromagnetic fields regimes influences on the rheology of the fluidized powder. Methods of choosing the fields regimes providing the rheological state optimal for the required technological process depending on the chamber fill factor are described

Influence of electromagnetic effect parameters on ferromagnetic powders fluidity

The paper presents result of experimental studies of ferromagnetic powders fluidity management by effecting on particulate medium with constant and alternating gradient magnetic fields. Induction lines of constant magnetic field are perpendicular to symmetry axis of powder hopper. Alternating field is created by electromagnet with one tapering pole and has higher induction gradient values near hopper outlet. These fields form magneto fluidized bed from powder in hopper allowing powders of barium and strontium hexaferrite to flow through the hopper outlet. Dependencies of efflux speed from parameters of electromagnetic fields are presented for barium hexaferrite powder with average particle size 1 μm and strontium hexaferrite powders with average particle sizes 1 and 9 μm

SUBSTANTIATION OF PARAMETERS AND DEVELOPMENT OF KILN ELECTRIC DRIVE

It has been established that in the asynchronous machine-valve stage system (AMVS) a minimum asynchronous motor (AM) rotational speed at which free run-out conditions start is dependent on the parameters of the electro-mechanical system of the kiln; the influence of the parameters of the AM and a DC source on the self-excitation conditions of the AM operating in the mode of dynamic braking (DB) with a varying structure has been analysed. The boundary parameters (a torque and a rotational speed) of the AM in the DB mode with self-excitation have been determined. Methods of determining the DB modes for the AM with compound excitation and self-excitation have been devised; an adaptive system controlling the electric drive of the kiln during the period of stopping the latter has been worked out. Based on the engineering solutions and recommendations, a schematic diagram of the AMVS system which has been introduced as a kiln electric drive at Joint-Stock Company "Fosfaty" has been developedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

INVESTIGATION OF ZONE SYSTEM IN DECAMETRIC (DCM) RADIO COMMUNICATION AND DEVELOPMENT OF WAYS FOR INCREASE OF ITS EFFICIENCY

The aim is to develop the different methods for evaluation of the zone DCM-radio communication systems, to develop the procedures increasing the communication reliability and vitality. The method for evaluation of the DCM-radio communication systems according to the user's losses has been developed; the method for comparison of the DCM-radio communication systems according to the middle losses has been improved, the probable-time characteristics of information transmission processes for different DCM-radio communication systems have been obtained. The quantitative evaluation of gain in the communication system with repeater according to the user's losses and according to the communication effectiveness in comparison with other systems has been obtained; the procedures of reducing the integrated user's consumption and also the procedures increasing the reliability and vitality of the zone DCM-radio communication have been developed. The method evaluating the DCM-radio communication systems according to the user's losses is introducedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio