The article considers the directions of development of energy, transport and water facilities through the use of liquefied natural gas.

Keywords: liquefied natural gas, energy, methane, motor transport

To ensure the correct and continuous operation of all electronic devices, it is necessary that all components of these devices correspond to their declared characteristics. In this article, an information-measuring system for incoming control and analysis of the quality of components is being developed. Structural and functional diagrams of the system were developed. A natural experiment was carried out.

Keywords: information-measuring system, input control, quality analysis, components

The electrophysical and mechanical properties of a piezoceramic material based on CTS are investigated. A number of features in the behavior of the electrophysical properties of the material in the temperature range located significantly below the low-frequency (1 kHz) maximum of the dielectric constant T_m = 160℃ have been revealed. The obtained results indicate the proximity of the studied material to ferroelectric relaxors, in particular, the low coercive field E_c~5 kVcmcm, the significant dependence of T_m on the frequency and amplitude of the measuring field, as well as the behavior of the velocity of longitudinal ultrasonic waves in this ceramic. It is shown that the elastic properties of this material are very close to ferroelectric relaxors, having a high malleability in a very wide temperature range. At the same time, the squareness of the polarization loops at relatively low temperatures indicates the manifestation of the classical properties of the ferroelectric during the polarization switching processes, and not the "freezing" processes characteristic of ferroelectric relaxors. From the results obtained, it can be established that this composition will be promising for use in the actuators of adaptive optics systems and precision positioning devices due to the high values of piezomodules.

Keywords: PZT system, ferroalloy ceramics, dispersion, polarization, elastic properties, blurred phase transitions, curie temperature, depolarization temperature, ferroelectric relaxor, rhombohedral phase, tetragonal phase

The effect of a zeolite support on the physicochemical properties of cobalt catalysts was studied on a series of samples with zeolites ZSM-5, HY, and NaX. The catalysts were obtained by precipitation followed by mixing the precipitate with a zeolite support. Their properties were characterized by BET, TPR, TPD-H2, IR spectroscopy. The results of the analysis show that the type of zeolite support affects the specific surface area, reduction of deposited cobalt, and the structural properties of the active component of catalytic systems.

Keywords: precipitated catalyst, cobalt, zeolite, dispersion, specific surface area, active component, synthetic fuel, degree of reduction

The importance of ensuring reliable operation of steel vertical tanks is emphasized. Based on the analysis of a number of scientific publications and regulatory documents, the most characteristic defects are presented in tabular form by groups, the combination of which determines the choice of the method of overhaul or reconstruction of tanks. In accordance with the data given in the table, the most common methods of overhaul and reconstruction of steel vertical tanks are considered.It is noted the need to develop organizational and technological solutions based on information technology, using servers for monitoring through the GLONASS / GPS systems, which will allow, within the framework of monitoring, to detect defects and damage to structural elements in a timely manner during the operation stage and ensure their elimination in order to increase the residual life of vertical steel tanks .

Keywords: residual life, causes of defects, welds, cracks, work methods

It was necessary to develop a filter design option for implementing it on an FPGA in conditions of limited FPGA resources and processing time. Options for constructing filters and sequential optimization of the structure for implementation on an FPGA were considered. Two models were built using the Matlab environment, where the results of signal processing with filters were compared for the same parameters. Simulations have shown that the filters are unique.

Keywords: DSP, FIR filter, pipeline, FPGA

This article discusses the development of a magnetometer calibration device, which is controlled by a microcontroller, Arduino [1, 2], which can receive, process and transmit the necessary commands to the peripheral part of the installation using the written program code. The need for buffer circuits and elements allows you to control I / O devices. With their help, interface hardware is implemented. Structural and functional diagrams of the device were developed. And also the calculation of the parameters of the Helmholtz coils was carried out, their 3D model was built. With the help of the Gaussmeter, a full-scale experiment was carried out, which confirmed the operability of the device and its effectiveness.

Keywords: control and measuring device, induction, Helmholtz coils, gaussmeter

This article considers the development of an information-measuring system for determining the thermophysical parameters of electrical devices. The developed functional diagram of the device is presented. Experimental studies were carried out in the COMSOL program. As a result of an experimental study of the transfer of heat from one part of the electromagnet to another, namely from the magnetizing coil, through the core to the environment, it was concluded that the best location of the temperature sensors is in the upper part of the body of the electromagnet EM-34-5. The data obtained can be used to determine the thermophysical parameters, in solving problems of the theory of inverse problems of heat transfer and heat transfer.

Keywords: information-measuring system, electrical devices, thermophysical parameters, COMSOL

The ever-increasing number of vehicles creates a heavy load on the transport network of cities. One of the ways to solve this problem is to develop methods for controlling traffic under existing constraints. The first developments in adaptive transport management began to appear in the mid-eighties of the last century. They were able to positively influence the transport situation of cities and regions. Each of the adaptive control methods has passed a fairly long period before being directly applied, undergoing constant changes and improvements. As a result, systems built on the basis of these methods are being implemented and are still functioning. In order to simplify the processes of development, operation, maintenance and scalability of adaptive transport control systems, to implement the principles of active management to increase the flexibility of such systems in the design and application, a method has been developed for building distributed traffic control systems that allows you to design a system from ready-made blocks and implement it according to the principle plug and play.

Keywords: traffic control, adaptive control, distributed control system, traffic, IEC 61499, plug and play

The article examines the analysis of the current state of the social infrastructure of dual-use facilities, including the values of indicators for achieving strategic goals and objectives, and the question is about further development prospects. The analysis is carried out on the example of the dynamics of the number of military consumers.

Keywords: social infrastructure, design object, dual-use objects, dynamics, provision of services, maintenance of the territory, garrison, type

The results of a study of the nature of the occurrence of fine dust particles in the urban environment (on the example of the city of Volgograd) are presented. The sources of dust release in the form of ground dispersed massifs represented by loess and clayey soils are considered. The results of determining the mode of variability of the parameters of the mechanical composition, physical properties in two directions of dust drift (southeast and north) are shown. Studies of loess and clayey rocks for radon content were carried out. It was revealed that the dispersed soils under consideration are characterized by significant indicators of the effective specific activity of radon. Researches of pollution of a snow cover are carried out. It was found that the snow cover, in addition to technogenic accumulations, contains particles of fine dust. The results of the study will help in the implementation of predictive assessments of possible changes in the environment.

Keywords: atmospheric pollution, fine dust, urban environment, dispersed rock, wind flow, soil massif, radon content, drift trend of fine earth

At present, various software systems are widely used to carry out researches in the field of technology, make it possible to create mathematical models of real objects. Their further study allows to obtain a large amount of calculated data necessary for units’ design, resource assessment and performance of the object under study. This makes it possible to significantly reduce the conduct of experimental studies of real objects, as well as to obtain additional data that characterize specific parts during operation, such as the values of internal stresses, natural vibration frequencies, data on strength, fatigue, etc. However, during the process of real objects models creating, not always all the necessary data is available. In this regard, it is necessary to carry out research with some real details. To determine the material hardness of the rotor shaft of the turbocharger at different depths from the shaft surface, special new samples were made. Next, the microhardness of the material was determined. The hardness of the material from the surface decreases and at a depth of 1 mm becomes equal to the hardness of the unhardened one. After research finishing, a geometric model of the rotor shaft is created. The model is created using the SolidWorks Simulation complex. The working part of the shaft model consists of two layers: the first one is the surface with increased hardness and 1 mm thick; the second one is internal unhardened. This model is used in the research and development of technological processes for the repair of the part.

Keywords: software package, mathematical model, static analysis, rotor shaft, hardening, hardness, sample, depth, surface layer, repair

Modern trends of the concretes studies have been considered. Properties of the materials and additives used have been cited. There has been undertaken designing an experiment on a complex modifying additive application for a fine fibre-reinforced fine-sand cocrete. The results of the studies undertaken have been analyzed with regard to their statistical significance. On the bases of the reseach results there have been acquired regression equations for objective functions responses, namely ultimate strength on both compression and bending, and average density of fine fibre-reinforced concrete. There have been produced contour plots and those of response function surface - ultimate strength under compression for all combinations of the both factors. There have been determined the composition of the modifying additive, which ensures maximal strength properties for fine fibre-reinforced fine-sand concrete.

Keywords: fine concrete, complex additive, designing an experiment, strength, regression equation, plots of response function surface

A method of selecting admixtures for the production of dry building mixes is proposed based on the results of an expert assessment of the complex indicator of the workability of application (connectivity, continuity when pulling with a toothed trowel, elasticity, quality of rollers) on a 100-point scale and the strength of adhesion to the concrete base, followed by the calculation of the specific cost of admixtures in the mixture per ton of products, respectively, by one point of workability of application and 1 MPa of adhesion strength, developed as a result of studies of adhesive mixtures made using 4 different cements, 5 water-retaining additives and 12 redispersible polymer powders. The possibility of obtaining adhesive compositions of adhesion class C 2 using redispersible polymer powders of domestic production is shown.

Keywords: dry building mix, adhesion strength to the base, unit cost, processability of application

The conditions and the process of certification of buildings according to WELL and Fitwell standards are analyzed. A comparison of standards was made. The process is described, as well as the necessary conditions for successful certification.

Keywords: construction, European standards of green construction, green technologies, energy saving, energy efficiency, WELL, FitWel