Home – Home – Jornals – Scientific journal “Vestnik NSUEM” 2017 number 4

The article considers a problematic situation and disproportion in the spatial development of Russia. It expresses the authors’ position on the cur rently established Russian Federation Spatial Development Strategy and outlines conceptual provisions that should be reflected there. We examine the strategic priorities for the spatial development of Russia and Siberia, as well as trends, challenges, and threats that can change the development vectors in macro-regions. Special attention is paid to the positioning of Siberia in the eastern vector of Russia’s development and, in particular, to the problems of development and interaction among the regions in Siberia, the Russion Far East, and the Northeast China. We review some issues related to aligning the Eurasian Economic Union with the Silk Road Economic Belt and carrying out the One Belt One Road Initiative.

The article describes the background, current state and development prospects of the SIRENA (abbreviated from «synthesis of regional and macroeconomic solutions» in Russian) research project, which has been developed in the IEIE since the early 1980s and deals with a methodology for coordinating long-term solutions within the two-tier «national economy - regions» system was developed in the early 1980s. We present a model-methodical and software-information platform aimed at building a complex of hierarchical forecast calculations (KIPR), which is the calculation core of Project SIRENA. The article gives examples of how to make long-term regional development forecasts that implement the correct transfer of scenario macroeconomic conditions to the regions. We discuss promising trends in analyzing and forecasting the development of the Russian multiregional system with SIRENA: studying the topological properties of the space of regional indicators, measuring sustainable spatial transformations of the Russian economy, technologizing methods for developing normative scenarios of the country’s spatial development, constructing genetic development scenarios for the Russian multi- regional system based on evolutionary economics and others.

The article analyzes the current state of the fiscal equalization system in the Russian Federation and comes to a conclusion thereon: the country lacks a complete and efficient system for redistributing public funds between the budget levels. Unlike most studies in this field, the paper challenges the conclusion that a cooperative model of fiscal federalism needs to be implemented as being only possible development of Russia’s center-periphery relations. In order to stabilize the economic situation in the regions and municipalities, as well as to overcome their welfare mentality, we propose to employ a mixed model that includes elements of both cooperative and decentralized models of fiscal federalism.

The article examines mortality and life expectancy in the northern regions of Russia. It shows that life expectancy in the North is below the national average. Only in Khanty-Mansi and Yamalo-Nenets Autonomous Okrugs, this indicator is higher than the nationwide figure. This situation is largely due to the «export of mortality» to the southern regions. Despite the reduction, life expectancy here is still more gender-differentiated than it is in other parts of the country. The proportion of mortality from external causes remains above the average Russian level. In most of the North, infant mortality has declined over recent years. The article’s conclusion is that the Russian North still has large reserves to increase life expectancy. We justify activities for extending the existing positive trends.

This article analyzes differences between age-specific interregional migration profiles in Russia and their features. The study relies on the data on internal interregional migration by one-year age groups for the period of 2011-2015, and data on migration between municipal formations by five-year age groups for the period of 2012-2015. The primary method of analysis is to classify age-specific migration profiles. We divided the regions of Russia into two types: with net interregional migration gain and with net migration loss. Then we defined sub-types of regions differed by migration gain (loss) in the key age groups and by age-specific migration rates. The article shows and explains variations in indices of the age-specific intensity of net interregional migration, as well as highlights the impact of migration on the age structure of the population in regions.

The article evaluates the contribution of different personal income sources and their components to interregional inequality under static and dynamic conditions over the period of 2001-2015. We show that labor compensations had the least impact on reducing interregional differences, and their relative contribution to inequality increased. Social transfers had the greatest leveling effect, but their convergence potential was significantly exhausted due to the construction features. Property incomes were the strongest catalyst for inequality, but their share in the total personal incomes was small and decreasing, and their interregional differences in this area dropped in the postcrisis period, so they made a small contribution to the regional convergence. Incomes from entrepreneurial activity also had a small effect on reducing interregional disparities due to a decrease in the share of total incomes and spatial reallocation. The predominant contribution to convergence (more than 50%) was made by so-called other (mostly informal) incomes. The obtained results testify to the impact of both the centralized redistribution of incomes along with the adaptive practices of the population and the peculiarities of the regions' institutional environment on the reduction of interregional differences related to personal incomes in contemporary Russia.

The article provides the results from analyzing the dynamics of production in the Russian regions between 2010 and 2016. The main hypothesis of the study is that the change in the Russian economic development model in 2014-2016 should have affected the economic situation in regions and activated the factors of economic dynamics that stayed passive before. We present a set of factors characterizing the initial conditions and objective region-to-region differences: the structure of the regional economic complex, features and limitations related to generating final demand, economic policy and institutional conditions. The research methodology is based on using the apparatus of extended production functions. We numerically assess the factors’ contribution to the dynamics of GRP per capita for 2010-2015. The main factors that determined the regional economic growth in a stable upward momentum and under the economic crisis were national trends. This is also confirmed with the estimates of regional dynamics carried out by identifying structural changes. For the whole period under research, factors associated with agglomeration effects, the localization of extractive industries, agriculture, and the chemical industry turned out to be statistically significant. In 2013-2015, factors of domestic demand - investor and consumer demands - were becoming more important. At the same time, there was no fundamental change in the contribution of factors; in particular, the ones characterizing innovation activity in regions and small enterprise development did not appear to be statistically significant. We define which economic policy trends have the most impact on regional growth. They include stimulation of the investor and consumer demands; for the conditions of 2015, a key factor was a decline in the poverty headcount ratio.

The article forecasts the development of the economy in the Buryat Repub- lic within 2017-2019, contingent on the aggregate macroeconomic forecast of Russia’s economic development, by using a dynamic input-output model. For the economy of Buryatia, we calculate the forecast in two versions: baseline and optimistic. Following the forecast calculation results for the dynamic in- put-output model, we outline predictive estimates of the dynamics of regional and sectoral indicators of the Republic for 2017-2019 in comparable prices. According to the baseline forecast, the Buryat GRP will retain negative dynamics in 2017-2018. A moderate economic growth will only pick up in 2019 (GRP growth rate is 101%). Fixed investment will continue to fall in 2017 (95%) and resume growing only in 2019 (102%). It is shown that under a more active economic policy by the Government of the Republic of Buryatia and favorable macroeconomic conditions, the optimistic scenario demonstrates a slight economic growth as early as 2018: GRP will increase by 1%. In 2019, according to this version, GRP will rise by more than 3%. Considering the investment lag, in order to ensure economic growth in 2018-2019 under the optimistic sce- nario, a significant increase in investment should be resumed in 2017, which will continue in 2018-2019. The optimistic forecast is a numerical estimate of those investment increment factors that are necessary to ensure the beginning of an economic recovery in the Republic of Buryatia.

The article depicts a model to test a hypothesis about the effect of world-market oil prices, the ruble exchange rate, and anti-Russia sanctions on the international trade in the regions of the Siberian Federal District and Russia in general. We present the results of studies on foreign trade dynamics, commodity structure, and regional specific features. An independent result is an experience of using iterative multiple step-by-step regression, which makes it possible to identify a significant set of influencing factors and evaluate how they impact the generation of changes in a dependent variable. The article shows that sanctions had an inconsiderable effect on international trade. We have discovered a connection to sanctions for some regions of the Siberian Federal District but no influence from them on the district’s aggregated trade.

The article estimates the expected efficiency of constructing a motorway bridge across the Ob River in Novosibirsk under risk. We analyze alternatives that require much lower financial contribution and provide an opportunity to improve the city traffic situation in a short time. We consider organizing piggy-back traffic across the Ob, which would involve vehicle carriage over railway bridges. Investment decisions are evaluated using indicators of a project’s commercial and fiscal efficiency. The calculations have shown that the piggy-back bridge crossings are more economically viable than a new motorway bridge.

The article examines the problems of developing a regional mineral resource base in regions, which have an underdeveloped production infrastructure. We propose an original mathematical model, where public investments are involved both in creating infrastructure and carrying out environmental measures, to assess the impact of transaction costs (TС) on the performance of public-private partnerships (PPP). Such a situation often occurs in practice and usually stems from a need to build modern housing and environmental infrastructure in remote areas of Siberia and the Far East. The article reveals factors that affect the efficiency of PPP when developing fields on the untapped areas. A significant factor of influence, comparable to the discount rate, is the state’s level of TCs, with their growth having the most negative effect against a high investment discount rate. This suggests that, in adverse investment conditions, it is important to prevent the state’s TCs from growing. The most natural way is through improving the efficiency of state institutions of eco-economic regulation, reducing redundant functions and excessive costs. The analysis shows that the economic performance of PPPs depends on individual factors and their combinations alike, and the dependence is rather complex. An a priori assurance that a PPP where the state has a substantial share always brings positive results is unfounded if we aim to respect the interests of not only private businesses but also society as a whole.

The article gives a review of transport megaprojects expected to be carried out in Eurasia. We assess the existing latitudinal and meridional megaprojects in terms of their prospects and risks for Russia and its border regions, as well as for Eurasian countries in general. The article critically evaluates a project related to the New Silk Road, which consists of laying a road and a gas pipeline through the Ukok high-altitude plateau on the Altai border between China and Russia. As an alternative, we provide rationale for building up a meridional transport, economic and cultural Russian-Indian mega-corridor. We remark its potentialities in bringing economic benefits, solving border disputes, expan- ding cooperation among the Eurasian BRICS countries, overcoming cultural and environmental risks, as well as promoting interaction within the Shanghai Cooperation Organization. The article considers megaprojects an essential addition to Eurasian latitudinal ones and an important condition for strengthening the power of the Eurasian geopolitical world.

The organization of corporate planning from the development of new products to their distribution in the system of optimized intracompany management under risk and uncertainty of external and internal environment is a complex scientific and methodological problem. Currently, there are virtually no sound risk-management techniques at the level of industrial enterprises, so the research issue is undoubtedly topical. At the top level of management, key strategic indicators are achieved by the development and implementation of innovations, mostly related to planning and producing new high-tech products. However, it is at this level that risk and uncertainty have the greatest impact on planning the design, production, and distribution of new products. Researchers suggest using stochastic graphs with backtracks for such planning. This idea is supported by an optimization model for corporate planning, which enables to assess the efficiency of new product development and distribution processes. In the article, we show the solution methodically and practically by an example of a functioning instrument-making plant.

Any open system of measurements, aimed at estimation of information objects in information space, creates the possibilities of results manipulation. The defining property of systems of measurement is their structuredness. In the context of the designated property of the system of accounting (financial) reporting and the algorithms of regions rating can also be referred to one level - formally structured systems of measurement, which creates the possibility of translation of the approaches of estimation of certainty of financial reporting to estimation of certainty of regional investment attractiveness. The authors methodology of estimation of misrepresentations in financial reporting, based on successive use of mathematical and statistical models (typology, clustering, multicriteria estimation) for construction of the resulting probabilistic model of integrated index, making it possible to reveal facts of misrepresentation of financial results of business activity and define the focus of the revealed misrepresentations, was developed and tested on existent populations to carry out the research. Convergence of key foundations of investment space of financial market and investment attractiveness of regions is shown. The experiment, making it possible to find similarities in bias (misrepresentation) of the investment climate upwards or downwards, is developed. Information base of the carried out research was formed by: data of the Federal State Statistics Service of the Russian Federation; «Screen» data base of Russian companies by types of activity and regions; data of rating agencies; electronic network resources.

It has been found to be economically expedient to develop the west wing reserves of Oktyabrsky Mine by cut-and-fill method with cemented backfill of primary stopes and dirt fill of secondary stopes. This method shows better performance in terms of ore loss and dilution as compared with the current mining system at the same quality of ore produced. Feasibility study of the two variants of process design in the full cycle of mining, processing and recovery of primary metal (nickel) and associated metals (copper, platinum, etc.) shows that the proposed mining system allows higher profit per unit of ore mining and processing.

The state of mining in Artemevsk Mine is analyzed, and the current and recommendable support designs are described. In unstable rock mass, it is possible to replace heavy and laborious steel frame support by less expensive and lower labor-intensive fiber-reinforced shotcrete lining with surface support without reduction in load-bearing capacity of the support. The variants of arrangement of shotcrete production plant are discussed, and the economic efficiency of the proposed dry-mix shotcreting is calculated in terms of Artemevsk Mine.

The investigation in volume density of titano-magnetite ore of the North orebody of Gusevogorsky Deposit is reported. It is found that the volume density is interconnected with the iron content of ore. Based on the block modeling, the authors predict variation in the volume density and total iron content for deep level ore in Northern open pit mine of EVRAZ KGOK. The prediction data are applicable in geological and process designs.

Using the scanned laser microscopy, the authors obtain new experimental data on the influence exerted by a phytomodifier represented by tannin on adsorption of a compound collector represented by modified sodium diethyl dithiocarbamate at arsenopyrite and stibnite, which allows substantiating the method of selective production of antimonic concentrate from complex gold-bearing arsenide ore by new reagents and enables optimized selection of reagent regimes.

The collecting ability of desorbable species (DS-species) of carbonic acids is analyzed. The spreading velocity and surface pressure of some fat acids are correlated with their collectability. It is found that an increase in the hydrocarbon chain length to a certain limit results in the higher collectability of carbonic aids, which correlates with the high spreading velocity of derivants of the acids on water surface. The cause of reduction in the collecting ability of short-chain collectors is discovered. It is shown that an adequate criterion of fat acid collectability can be the surface flow thickness of the agent’s DS-species film. The flotation performance with the mixed chemisorptions and physisorption coat and with the coat represented by chemical adsorption is estimated. The causes of the decrease in the valuable component recovery and in the concentrate quality without the physical form of reagent adsorption at a mineral surface are revealed.

The article describes sequential leaching of gold-bearing ore of the residuum. The interconnection between rare earth elements and their mineral matrix is defined. The mobility of REE in the initial ore and during hypergenesis is assessed. Two kinds of REE are revealed: fine monazite cerium-neodymium crusts in iron-bearing minerals and dense monazite pockets in titanium-bearing minerals. The five-stage sequential leaching procedure allows more detailed distribution of elements in the rebellious matrix while the three-stage procedure focuses on mobile forms.

The change in separation performance and in magnetic characteristics of separation products is traced along the processing circuit of Abagur plant at a laboratory scale in order to determine the limit content of magnetite iron in impurity aggregates in the concentrate. The wet magnetic analysis is carried out in the field of H = 175 kA/m, and the magnetic characteristics are determined in the vibration magnetic detector in the field up to 800 kA/m. The concentrate impurity is governed by the relative content of barren rock and ore aggregates removable in concentration at the given level of the technology.

Underestimation of raw material reserves contained in gold mining waste dumps results in tense socio-economic situation in gold mining regions. Efficient management of gold mine waste is only possible with the new and sound technologies of waste preparation and deep conversion with a view to recovering valuable components. Aimed at creation of such technology, the large-scale theoretical and experimental research has been undertaken in order to study the nature and rate of influence exerted by basic process factors on migration and concentration of gold particles in gold mine waste.

The test bench has been designed to subject specimens of geomaterials to loading by torsion and longitudinal compression with the simultaneous multiple weak impacting. The measurement system contains sensors for static and dynamic measurements of strains. The tests experiments included cyclic torsion of mixed gypsum and quartz sand specimen. The static and dynamic strains were measured, and the velocity of elastic wave in organic glass was determined.

The article describes the instrumentation system designed for the synchronous recording of electromechanical emission and mechanical deformation parameters in lab-scale tests of rock specimens. Based on the data of implemented tests, the change in the structure and spectrum of EME signals at the pre-discontinuity stage in rocks is determined, and the failure prediction criteria are proposed.

Up to 1 billion nm³ of hydrogen sulphide-containing associated petroleum gas (APG) is annually flared in Russia, which leads to the release into the atmosphere to 60 thousand t of H₂S, SO₂, SO₃, carbon black, carbon monoxide, and to 3 million t of carbon dioxide and most importantly, to loss of hundreds of millions of cubic meters of hydrocarbon raw materials. The development of environmentally safe, efficient, and compact technologies to solve this problem is a pressing issue. The paper carries out brief analysis of existing technical solutions and the description and the main trial results for technologies of the Boreskov Institute of Catalysis SB RAS.

The present review is devoted to the study of the process for low-temperature pyrolysis of coal. The effect of genetic and technical factors (heating rate, microwave radiation effects, and catalyst) on the yield and composition of coal thermal decomposition products was assessed. As demonstrated by literature data analysis, low-temperature pyrolysis of coal contributes to an increase in the yield of semi-coke, tar, and gas in inert, reducing, and oxidizing media, respectively. The use of microwave radiation or low temperatures during coal pyrolysis leads to an increase in the yield of liquid products, and of catalysts - tar and light hydrocarbon fractions, correspondingly.

Reduction of freshly precipitated mixed hydroxides with hydrazine in strongly alkaline medium yielded nanostructured (5-20 nm crystallites) powders of the Fe-Co-Ni system in the entire region of compositions. They had different magnetic characteristics and were promising for the use as magnetic materials. The correlation between magnetic properties and phase composition, and also crystallite (species) sizes was explored. The reached values of saturation magnetization of samples in the region of an iron rich solid solution exceeded parameters of the known literature analogues. It was also found that dependencies, such as lattice parameter and composition for face-centered and cubic body-centered cubic phases of solid solutions were described by the flat surface equation.

The properties of nanostructured composites based on porous carbon matrices filled with products of thermolysis of cobalt azide particles pre-synthesized in pores of matrices are considered. Porous carbon materials of the types "Carbonisation 3" and "Kemerite 8" were used as matrices. The investigations were performed by X-ray diffraction, X-ray fluorescence analysis and small-angle X-ray scattering. According to X-ray diffractometry data, the Co (N3) 2 decomposition products in the explosive mode on the "Carbonisate 3" matrix are metallic cobalt and CoO, and on the "Kemerite 8" matrix the main product of thermal decomposition is the spinel Co3O4. The study of matrices and composites based on "Carbonizate 3" by the MCPD method has shown that the sizes of the three detectable groups of inhomogeneities observed on carbon matrices during the preparation of the composite range from 1-3, 6-18, and 160-300 nm. The electrochemical properties of the obtained nanocomposite material were studied. It is shown that the introduction of cobalt oxide into the carbon matrix leads to an increase in resistance and an increase in the electrical capacity of the composite electrodes. The increase in capacity is due to the pseudo-capacity of cobalt oxides due to reversible oxidation-reduction processes involving the oxide-hydroxide phases of cobalt, which are formed during the charge-discharge of the cell.

The paper studied adsorption characteristics of carbon sorbents produced from naturally oxidised coal of Barzas deposit. Synthesis of sorbents was carried out by the chemical activation method using potassium or sodium hydroxide and carbonization at 800 °С. The effect of alkaline nature and the amount of the introduced alkali at the impregnation stage on characteristics of the resulting sorbents was studied. Adsorption characteristics were explored on an example of benzene, phenol, and iodine. Benzene adsorption under the studied conditions linearly depends on the total pore volume in the sorbent. It was demonstrated that sorbents produced from the naturally oxidised Barzas coal activated by potassium hydroxide had the developed porous structure and high adsorption characteristics. To produce sorbents with high characteristics from the naturally oxidised Barzas coal with potassium hydroxide activation it was sufficient to use a coal/KOH mass ratio of 1 : 0.5.

Regularities of electrodeposition and electrooxidation of nanostructured mono- and bimetallic systems based on nickel and cadmium were examined in sulphate and ammonia buffer electrolytes when using the inert glassy carbon substrate for deposition. Nano metallic precipitateswith complex phase composition were formed, as shown by means of anodic voltammetry. Their electrooxidation was accompanied by generating a series of peaks in voltammetric curves. Conditions of electrochemical synthesis of nanostructured electrolytic systems based on nickel and cadmium were determined.

The paper presents the results on synthesis of natural gas hydrates in a medium of water-in-oil emulsions in a high-pressure cell. Hydrates are generated in emulsions via a stepwise mechanism, as established. Its origin is driven by diffusion parameters of natural gas. Hydrate growth from natural gas dissolved in oil occurs in emulsion medium accompanied by concentrating methane, as demonstrated by the study of the composition of the resulting hydrates. Whereas hydrate composition does not depend on a ratio of oil and aqueous components of the emulsion. Hydrate content in emulsions is directly dependent on the amount of water in an emulsion composition and decreases with increasing the water fraction, as demonstrated.

The development of alternative power engineering requires the development of highly effective systems for energy storage and transformation. The paper presents a new approach to the solution of a task of preparation of nanostructured composite electrodes for supercapacitors based on highly porous carbon matrixes. The way consists in thermal (slow or explosive) decomposition of nanocrystals of high-energy compounds pre-generated in matrix pores. A method for preparation of С/CoN₆ composite with a given phase ratio is developed within carried out research. Thermal decomposition of CoN₆ proceeds in explosive or non-explosive modes depending on composite composition and heating mode, as shown. According to X-ray diffractometry, decomposition product in non-explosive mode is Co₂O₃, while in explosive mode - nanoscale cobalt oxide (CoO). The sizes of inhomogeneities formed on the carbon matrix during composite preparation are 7-10 nm, as demonstrated by the study of С/CoN₆ composite using the small angle X-ray scattering (SAXS) technique. Electrochemical properties of the resulting nanocomposite material are studied. The introduction of cobalt oxide into carbon matrix leads to an increase in the resistance and electric capacitance of composite electrodes, as illustrated. Capacitance increase is due to the pseudo-capacitance of cobalt oxides because of reversed redox processes with the involvement of oxide hydroxide phases of cobalt generated during cell charge/discharge.

With a view to optimizing conditions for preparation of promising high magnetic nanomaterials, the dimensional peculiarities of which find the increasing use, the work explored mixed iron, cobalt, and nickel hydroxides, i.e. intermediate products of synthesis by the method of reduction of precursors that refer to this class of nanostructured Fe-Co-Ni powders using methods of X-ray diffraction and mass spectrometry. Precipitation of hydroxides was carried out under conditions of preparation of a polymetallic but with a lack of a reducing agent, both in coprecipitation mode and separately. As established by crystal lattice parameters, iron in coprecipitated mixed hydroxides is largely oxidized to Fe³⁺, which is probably due to their nanoscale dimensionality determined using XPA.The composition of the resulting oxide-hydroxide phases (OHP) canbe expressed by a formula of w Fe(OH)₂ · x Co(OH)₂ · y Ni(OH)₂ · z FeOOH that crystallochemically corresponds to a structural type of brucite. When mixing suspensions of separately precipitated oxides, there occurs recrystallization in two phases, such as macrocrystalline, rich with iron, and superfine, with its lower amount and oxidized to a lesser degree. In addition to OHP, a spinel phase in fine dispersion is generated. Liberation of significant amounts of CO₂ at elevated temperatures points to the presence of carbonates in samples. Since they are not detected by means of X-rays, one may assume that the carbonate anion is embedded into oxygen layers of the structure of brucite of OHP.

The qualititative and quantitative composition of hydrocarbons generated during thermal and hydrolytic decomposition of sapropelites from the Kushmurun and Maoyoming deposits in Kazakhstan and China, respectively, was identified. Thermal and hydrolytic decomposition of sapropelites organic mass in an aqueous alkaline medium at 400 °С by approximately 40-60% was related to the generation of neutral and acid heteroatomic compounds and only by 5-10% - to paraffin-naphthene-aromatic, mainly, normal С₁₂-С₂₇ and С₁₂-С₃₁ alkanes, С₁₃-С₂₃ and С₁₄-С₂₇ alkenes, and also aromatic and naphthene-aromatic components, as discovered. It was noted that unlike anhydrous pyrolysis results, thermal hydrolysis products contained more monounsaturated olefins with different double bond positions. Proceeding from the composition of biomarker hydrocarbons, it was concluded that they were associated with the lithogenetic maturity of sapropelite organic mass. In addition, the sea origin of the initial biomass of lipid structural elements was suggested.

With the common purpose of developing functional and cost-effective new electrode materials, including those for supercapacitors, a preparation method was elaborated and electrocapacitive properties of nanostructured composites based on a mesoporous carbon material filled with manganese oxides were examined. Carbon material used as a matrix of nanocomposites was produced by carbonization of naturally oxidised coal at 800 °С. Composites were obtained by reduction of potassium permanganate solutions with carbon matrix at 20-25 °С without the introduction of additional reducing substances. The content of Mn _x O _y in composites was varied from 1 to 5 mass %. Manganese oxides in nanocomposites were in the X-ray amorphous state, as demonstrated by powder X-ray diffraction technique. Nafion® ion exchange membrane was used as a separator, a 6 M KOH solution - as an electrolyte during studying electrochemical properties using Parstat 4000, potentiostat/galvanostat. The electric capacity of nanocomposite electrodes is higher than that of matrix-based electrode material, as demonstrated by methods of cyclic voltammetry in potential windows a) from -1.5 to 1.5 V; b) from -1 to +1 V; c) from 0.1 to 0.8 V), galvanostatic charge-discharge and electrochemical impedance spectroscopy. Internal resistance and total impedance of asymmetric cells with nanocomposite electrodes was less than appropriate values for the symmetric cell with electrodes based on matrix. The optimum content of manganese in composites was 3 %, as established. Herewith, the reached capacity for Mn _x O _y /C nanocomposite hybrid electrode material in a potential window from 0.1 to 0.8 V was 404 F/g when using a 6 M KОН aqueous solution as the electrolyte.

The paper presents the results of a study into the effect of molecular mass on structure, properties, and behaviour of ultra high molecular mass polyethylene under thermal action. Diversity in physical and thermal properties is due to the difference in polymer structure, as demonstrated.

The paper considers structural characteristics of a promising mesoporous material to develop Kemerit ionistors. Location model of carbon layers is proposed. According to it, three-dimensional ordered nanocrystalline domains are a random overlay of strongly peaked graphene planes. Modelling of the resulting structures is carried out by the molecular dynamics method. The findings qualitatively coincide with the XPA and Raman spectroscopy data.

The paper carries out a comparative study of the chemical composition of chlorinated alumina produced by chlorination of low-temperature modifications of alumina with carbon tetrachloride and its morphological, structural and acid properties. It is demonstrated that residual moisture has a significant impact on listed properties of chlorinated alumina due to chemism of the reaction between carbon tetrachloride, liberated water vapours, and acid sites of alumina.