The problem of reconstruction of architectural structures of Central Asia is studied. The stages and periodization of the ensemble construction are considered. The basic design solutions of buildings are determined

Keywords: organization of construction; economy of construction, history of the construction industry

The article describes the concept of the digital gas sensors for toxic and flammable gases used in portable gas analyzers and stationary systems for dangerous objects monitoring. The results of the development of the low-power digital gas sensor for determining the concentration of carbon monoxide are described. The structure of the analog sensitive element, as well as its sensitivity to various gases and ambient temperature, is considered. A structural and schematic solution of a digital gas sensor using operational amplifiers and a miniature microcontroller is presented. The algorithm of firmware of the microcontroller is considered, as well as the calibration process.

Keywords: Digital gas sensor, toxic gas, gas converter, carbon monoxide, gas analyzer, monitoring system, calibration process, gas generator

The work is devoted to the stages of the formation of the city embankment. Its evolution from the port-trading and warehouse zone to the recreational. The continuity of the idea of "turning face to the river" of the city passing from project to project before World War II and after, which was realized only in the late 40s. The evolution of the descents to the embankment, originally created for trade needs, later became recreational zones, completed with monumental stairs.

Keywords: descent, architecture, project, city plan, VN Semenov, Ya. A. Rebain, implementation, restoration, bridge, project

The problem of calibration of a three-axis acceleration sensor is considered. A number of measurements obtained with the sensor at its different orientations in space are used as initial data for calibration. It is assumed that the sensor is stationary for each orientation variant. The measurement data are averaged at each static sensor position, and the averaged results are used as parameters in a system of nonlinear equations that are solved by the Levenberg-Marquardt method. The results of the proposed method in the article are presented in the experiment with a real sensor, which allows to check its effectiveness.

Keywords: three-axis accelerometer sensor calibration, the sensor coordinate system, the coordinate system of the gravitational field, the rotation of the coordinate system, the matrix of coordinate transformation, the correction factor, the average value of the me

The article deals with topical issues related to the need to improve the efficiency of dust collection systems, the correct choice of the method of purification of emissions and the design of industrial filters linking the operating modes of devices with the properties of the captured dust. A method of complex treatment of emissions with a wet dust collector built into the process line is proposed.

Keywords: wet dust collectors, efficiency, system efficiency, optimization, emissions, ecology, dust collection

The article describes the chemical composition of groundwater in the Rostov area. On the basis of sanitary and environmental assessment of the chemical composition of groundwater from wells, one of the areas of the South-Eastern part of the Rostov area, which are sources of water of the Egorlykskaya station, it was found that the concentration of hydrogen sulfide exceeds the MPC by about 1000 times. Analysis of methods of water purification from hydrogen sulfide, the main of which include: oxidation with molecular chlorine, sodium hypochlorite, hydrogen peroxide, showed the advantage of using the hydrogen peroxide. A new reactor design is proposed, which allows to increase the contact time of the treated water with the oxidant by hydrogen peroxide without increasing the size of the structure. This allows the maximum transfer of dissolved hydrogen sulfide in the solid phase.

Keywords: groundwater; hydrogen sulfide, purification, hydrogen peroxide, chemical reactor, economic efficiency

In the paper, we give a brief overview of the main developments made personally and under the direct supervision of the professor, academician RANS andIAELPS P. Kudryavtsev. These developments are devoted to the use of sol-gel processes in various branches of science and technology. Using this process, new composite heat-resistant materials, highly disperse materials and thin filmswere created. These developments have made it possible to create new efficient catalysts and highly selective inorganic ion-exchange materials. Based on inorganic ion-exchange materials, a technology was developed to extract lithium from natural brines, which are poor in lithium content. On the basis of sol-gel technology, new composite matrix-isolated flocculants-coagulants were created. These reagents are designed for the treatment of natural and wastewater in order to remove impurities of oil products and heavy metals.

Keywords: Nanomaterials, Sol-Gel Technology, Nanostructured Materials, Composite Materials, Highly Dispersed Materials, Thin Films, Catalysts, Highly Selective Inorganic Ion Exchangers, Extraction of Lithium, Composite Flocculants-Coagulants

The research that results from the work presented is the means of transforming space imagery. A transformation method based on the use of projective geometry methods is proposed. A completed study of the proposed method for mathematical image and terrain models showed a high degree of accuracy and a number of advantages over traditional image transformations

Keywords: Photogrammetry, transformations, cosmic images, projective geometry

The study on the hardness of samples from steel ST3 and 15G. On the basis of the correlation equations obtained values of ultimate strength of the examined steels. With the application of the law of three-parameter Weibull distribution constructed density distribution and the resulting minimum value of ultimate strength. The obtained results are proposed to use to determine the value of the resource for load-bearing systems of vehicles.

Keywords: reliability, lifetime, the hardness of steel, strength of steels, the endurance limit of steels, the Weibull law

In the article the distinctive features of the cargo car service are compared with the service servicing cars. Questions of an optimum term of carrying out of diagnostics of brake system of the lorry and qualification of the personnel of car-care center are raised. A comparative analysis of three types of stands for the diagnosis of the brake system of a car is carried out.

Keywords: Car, maintenance, diagnostics, car service, braking system, bench tests

In the article the analysis of the market of services of a car-care center of an average city is carried out. A selection of popular car repair shops is given. The market is estimated by the number of required posts and the market share of the services in the city.

Keywords: Car, maintenance, repair, market of services of car-care center, working post

Discusses issues related to the definition of process reliability systems. The dependence to determine the amount of damage accumulation to failure in the presence and absence of the experimental data.

Keywords: aspiration system, process reliability, failure, wear, damage, legal distribution of a random variable, the value of damage accumulation

The article gives judgments, focuses on the need for the development of military and town-planning sciences, based on the reality of practice, which, apart from armament, must take into account the urban and architectural components formed as a special kind of weapon of future wars.

Keywords: Urban planning, Armed forces, military science, architecture, defense infrastructure, housing

The article presents the results of the sociological survey analysis of the technical institute students. A systematic analysis of the socialization peculiarities, connected with the problem of spiritual security in modern society, is carried out. The issues of spiritual security are relevant, since it is the spiritual attitudes that govern the practical activities of each person in individual self-realization.

Keywords: system approach, spiritual security, spiritual and moral development, system analysis, professional socialization, personal development, strategy of behavior, social feeling, educational space

The possibility of improving the management efficiency of the main business processes of a logistics enterprise on the basis of an integrated assessment of strategic risks is considered. The methodology is based on the idea of sharing the technology of simulation and two concepts: the Balanced Scorecard (BSС) and the Integrated Risk Management System (IRMS). We propose formula for calculating operational risk based on port statistics collected while running the simulation model, namely the chosen values of the triangular distribution of the statistical data. Also presented a formula linguistic evaluation of integrated strategic risk, lead to the conclusion the risk that previously designated port strategy will not be achieved.

Keywords: Strategic risk, risk management system, logistics enterprise, business processes, balanced scorecard, strategic map, management decisions, competitiveness, simulation modeling