×

You are using an outdated browser Internet Explorer. It does not support some functions of the site.

Recommend that you install one of the following browsers: Firefox, Opera or Chrome.

Contacts:

+7 961 270-60-01
ivdon@ivdon.ru

  • The main aspects of the methodology of the judicial construction and technical expertise

    Conducting judicial construction and technical expertise, must comply with certain procedures and rules. The article systematizes the main tasks of the examination; determined the purpose of its implementation; describes how to conduct a hearing; The authors revealed the fact that the expert is criminally responsible for the opinion provided.

    Keywords: judicial construction and technical expertise, expert-builder, regulatory documentation, regulations of the construction, field test, expert opinion, executive documentation, quality of construction work, regulation of the hearing

  • Engineering surveys of road clothing using georadars

    The article deals with the survey of transport and operational condition of the highway R224 " Samara-Orenburg in which it was found that the roadway surface is in poor condition due to the presence of transverse cracks, ruts and pits. In a survey of 5 existing culvert structures were identified unacceptable defects in the structure. Based on the foregoing, the specified section of road be repaired in accordance with GOST R 50597-2017 “roads and streets” . Currently, economical and mobile methods of inspection of road structures are of particular relevance. Conducting engineering surveys of the GPR system MIRA was determined the constructive layers of road clothes light. The decision on milling to a partial thickness of the pavement that runs recyclers WR 4200, with the subsequent device of asphaltgranulate type To

    Keywords: pavement engineering, GPR applications, roads, surveys, MIRA GPR systempurposes of ensuring flexibility of production

  • Investigation of micro-dimensional metal structures obtained by electric explosion of conductors

    The article presents the results of experimental studies of the parameters of micro-sized metal particles and sprayed films obtained by the method of electric explosion of metallic conductors (EVP) and electro-explosive spraying (EVN), respectively. Copper (Cu) and aluminum (Al) metal wires were used as explosive conductors. Geometrical parameters and physicochemical analysis of the obtained microparticles and thin films were carried out by means of the universal two-beam electronic system Versa 3D. From the analysis of the obtained samples of sprayed thin films and fine particles, it follows that with a discharge current density J≈10 ^ 10 A / m ^ 2 millisecond, the film thickness and particle sizes can reach values ​​less than micron scale.

    Keywords: electrical explosion of conductors, thin metal films, fine particles

  • "Variants of planning structures of blocks of nursery groups for KBR conditions "

    For implementation of the program of creation of additional places for children from two months to three years in the conditions of CBD the task on development of the minimum number of options of schemes of planning structures of blocks of nursery groups on the basis of which further development of standard projects for inclusion in the register of standard project documentation of Ministry of construction of Russia is planned is solved

    Keywords: Keywords:blocks of nursery groups, planning decision, group cell, kindergarten

  • Effect of oxide additives on the structural properties of the cobalt catalyst for the synthesis of hydrocarbons

    The structural properties of cobalt catalysts and their active component are studied. The influence of metal oxides on the specific surface area, pore volume and size, the average crystallite size and the active surface area of the catalyst Co-Al2O3/SiO2 was studied.

    Keywords: Fischer-Tropsch synthesis, synthetic hydrocarbons, catalyst, cobalt, promoter, carrier, specific surface, porous structure, catalytic activity, degree of reduction, active surface area

  • Effect of modification of aluminum oxide on cobalt catalyst of Fischer-Tropsch synthesis promoted by manganese oxide

    The physical and chemical properties of cobalt catalysts promoted by manganese oxides for the synthesis of hydrocarbons by the Fischer-Tropsch method are studied. The influence of polymorphic modifications of the alumina carrier on the specific surface area, pore volume, degree of reduction, size of cobalt crystallites,catalytic activity, dispersion degree of catalyst reduction is considered.

    Keywords: Synthesis of Fischer-Tropsch, synthetic hydrocarbons, the cobalt catalyst, promoter MnO2, the carrier of Al2O3, specific surface area, the degree of recovery of the catalytic activity, dispersion, and the crystallites of cobalt

  • Cobalt Fischer-Tropsch synthesis catalysts supported on Al2O3 of various polymorphic modifications

    The parameters of the porous structure and the outer surface of cobalt catalysts for the synthesis of Fischer-Tropsch, promoted by magnesium, prepared by the impregnation method according to moisture capacity, were studied. The effect of polymorphic modification (γ, θ, α) of the carrier on the physicochemical properties of the catalyst Co-Mg / Al2O3 was studied.

    Keywords: Fischer-Tropsch synthesis, polymorphic modifications of Al2O3, synthetic motor fuel, catalyst, carrier, elemental analysis, BET method, specific surface, porous structure

  • Modeling and optimisation heat pump in cooling system of supercomputer

    In This study posed the problem of simulating the cooling system of supercomputers with a heat pump on the reverse Stirling cycle by numerical modeling of heat transfer processes in the object under study. The article presents the results of numerical simulation of heat transfer processes in the cooling system of processors of supercomputers with a heat pump on the reverse Stirling cycle. A numerical model of the heat transfer process was investigated. Using the method of numerical simulation of the heat transfer process, the dependences of the temperature delta, thermal resistance and the fraction of losses of the heat pump of the cooling system are obtained. The dependence of the ratio of the stroke of the piston to the diameter of the piston H / D of the heat pump has been revealed, taking into account the loss of the thermal resistance of the liquid cooling circuits and the elements of the design of the heat pump.

    Keywords: processor, heat flow, thermal resistance, Laplace equation, heat pump, heat exchange, Stirling backflow, cooling system

  • Separate mechanisms of digital economy formation at the regional level

    In the Russian economy, in a situation aggravated by the sanctions pressure from the United States and several EU countries, there is an acute problem of growth on the threshold of the 4th industrial revolution, which seems to be a necessary prerequisite for technological modernization of the country. The work examines possible mechanisms for achieving modernization and innovation growth in the regions of the Russian Federation: special economic zones, advanced development areas, industrial and technological parks, industrial clusters, which are mechanisms for accumulating a set of benefits in implementing new investment attraction vectors. It justifies the need to develop a strategy for the sustainable socio-economic development of the region, taking into account the assessment of its potential, analysis of competitive advantages and resource constraints. The introduction of these mechanisms implies a focus on long-term development, horizontal diversification, through the leadership of high technologies, harmonization of tasks, instruments of industrial and socio-ecological and economic development of regions with a focus on a fairly high standard of living.

    Keywords: economic transformation; technological structure; region; strategy; 4th Industrial Revolution; cyber-physical systems, territory of advanced development; zones of technical and economic development; investments

  • The effect of modifying additives on the properties of the supported cobalt catalyst

    The physical and chemical properties of cobalt catalysts for Fischer-Tropsch synthesis have been studied. The effect of copper and iron oxides on the specific surface, pore volume and dimensions, and the degree of reduction of metallic cobalt on the surface of the Co-Al2O3 / SiO2 catalyst have been studied.

    Keywords: Fischer-Tropsch synthesis, synthetic hydrocarbons, catalyst, cobalt, promoter, carrier, specific surface, porous structure, catalytic activity, reduction degree

  • Combined machine designed for the construction and maintenance of temporary winter roads

    The developed equipment is being created to increase the cost savings during the construction of the road infrastructure, to improve the quality of temporary winter roads, as well as to build them more quickly and conveniently. This technique replaces two cars in the construction of auto winter roads.

    Keywords: auto-wintering, melting, combination, versatility, innovation, snow melting unit, economy, application, design, methods

  • Increasing the atmospheric resistance of plastering outside brick walls of heated buildings

    Currently, in civil engineering, when building the exterior walls of buildings, plastered brickwork is most often used. The plaster gives the building a more aesthetic appearance, protects from weathering, moisture, precipitation. During the heating season, the plaster coating has the most destructive effect. Thus, the problem arises of the technology of plaster coating with a longer service life. The purpose of this research work was to study plaster on the external brick walls of heated civil buildings, as well as to find ways to improve the weather resistance of the facade plaster with the use of light stucco cement mortar and the use of advanced technology for its construction. To solve this problem, an analysis of the existing shortcomings of the facade plaster under atmospheric influences on it has been performed. Damage to the plaster layer arising during the process of atmospheric exposure is determined. In laboratory conditions, experimental studies were carried out to determine the optimum parameters of weatherproof plasters. The plaster coating of the external brick walls obtained by the above method has an increased strength, capable of resisting various atmospheric influences during the long-term operation of the heated building without degrading its functional properties.

    Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

  • Retrofit plow blade snowplow

    The developed version of the snow plow plow is created in order to improve the performance of a single unit of equipment when clearing snow on wide streets and to preserve unimpeded movement in a dense stream of cars, as well as the use of technology on narrow streets

    Keywords: clearing, productivity, folding, trails, KAMAZ, transportation, costs, area, speed, snow

  • Investigation of the physico-chemical properties of promoted catalysts based on Co-Al2O3 / SiO2

    The physical and chemical properties of cobalt catalysts for the Fischer-Tropsch synthesis prepared by the method of impregnating a silicate carrier have been studied. The influence of oxide promoters on the specific surface, volume and pore sizes, the degree of reduction of metallic cobalt on the surface of Co-Al2O3 / SiO2 catalyst has been studied.

    Keywords: Fischer-Tropsch synthesis, synthetic hydrocarbons, catalyst, cobalt, promoter, carrier, specific surface, porous structure, catalytic activity, degree of reduction

  • Effect of Al2O3 carrier modification on the properties of cobalt Fischer-Tropsch synthesis catalysts

    The parameters of the porous structure and the outer surface of cobalt catalysts for the Fischer-Tropsch synthesis prepared by the water-impregnation method were studied. The effect of the polymorphous modification of the support on the physico-chemical properties of the Co / Al2O3 catalyst was studied.

    Keywords: Fischer-Tropsch synthesis, synthetic motor fuel, catalyst, carrier, promoter, polymorphic Al2O3 modifications, elemental analysis, specific surface, porous structure