In the course of the work, the most popular environmental construction standards for today were studied: BREEAM, LEED, WELL and FitWel. The categories evaluated by these standards are considered.

Keywords: construction, energy-efficient technologies, green technologies, energy saving, energy efficiency, green construction standards, BREAM, LEED, WELL, FitWel

The article shows the predominant location of the city on the river, the modern development of transport navigation, including for local, suburban and intracity transportation, there has been an ever-increasing demand for individual water transport used to travel by water to places of rest. Bank protection and construction of a road in the right-bank zone of Volgograd will contribute to the development of the transport network and tourist infrastructure of the city. With the growth of the fleet of motor boats, which use mainly propeller motors to drive the propellers of river craft, the volume of fuel consumed also grows. The first "carbon footprint" on the water surface from motor boats appears at the stage of refueling the outboard motor. The second "carbon footprint" is associated with the design features of the propeller-driven boat motor of small river vessels, which release exhaust gas below the surface of the water. Therefore, ensuring the environmental safety of the coastal zone of the city is an urgent issue for research. The proposed possibility of reducing the carbon footprint when organizing a walking water route along the coast of the city through the use of an electric drive from renewable energy sources for small water transport will be a factor in the greening of the coastal zone, contributing to the revitalization of boat tourism and services for organizing active recreation of citizens and visiting guests.

Keywords: ecology, rocky road, small water transport, carbon footprint, renewable energy sources, electric drive of water transport.

Increasing the accuracy and quality of the surface layer of the product with minimal time and economic costs is the number one task of any engineering production, for this high-precision cutting is used. Overestimation of cutting conditions leads to an increase in contact loads acting on the cutting insert of the tool, which in turn affects the performance of this cutting tool and leads to a decrease in the efficiency of its use. It has been established that under production conditions, the failure of the cutting tool due to the destruction of cutting plates with different sections is 80-85%. The solution is to reduce bending stresses by reducing the area of ​​coverage, thereby reducing the wave of deflection under load that the cutting wedge experiences. Also in the studies, the results of the dependence of deflections on the angle of coverage of the plate were obtained using analytical calculations and approximated in the form of a graph. The ideal angle for wrapping the plate is close to 2α = 100°, where deflections are practically absent (minimum). The article considers the possibility of confirming the correlation of stress propagation in a round insert during turning. The results of the calculation show that the bending moment at the place of application of the load also increases with an increase in the angle of coverage of the plate, as in the case described by the studies during milling. Thus, the correlation of stress propagation during processing with a round insert during milling and turning is confirmed.

Keywords: Cutting tool, bending stresses, cutting process simulation, cutting wedge, turning, milling, deformation, multifaceted indexable insert

The development of a methodology for the formation of an estimate of a construction object on the basis of its information model is considered, taking into account the state of development of software systems for BIM modeling and the peculiarities of regulatory regulation of the construction of construction projects in Russia. The factors that limit the possibility of drawing up estimate documentation for the information model have been identified. Taking into account the identified limitations, a set of operations necessary for the formation of an estimate for a construction object based on its information model is presented.

Keywords: BIM, 5D BIM-model, estimate documentation, civil and industrial construction

The results of a theoretical and experimental study of the synthesis of GaInAsBi thin-film structures formed on InAs substrates in the field of a temperature gradient are discussed. The features of interfacial interaction in the In-As-Sb system in the presence of isovalent solvents (In, Bi) have been studied. The values ​​of the interaction parameters and the distribution coefficients of the system components are determined. Optimal technological modes for obtaining InAs-based heterostructures are presented. The properties of the surface of epitaxial layers are studied experimentally. It was found that the main control parameters are the temperature of thermomigration and its gradient. It is shown that the synthesized semiconductor materials can be effectively used in electronic devices of a new generation - electro-optical modulators and supersensitive sensor elements.

Keywords: epitaxial structure, crystallization, recrystallization, melt, segregation coefficient, organometallic compound, voltage sensitivity, near infrared range, solid solution, optical characteristic

The physicochemical properties of cobalt catalysts on a NaX zeolite support have been studied. The parameters of the specific surface area, reduction of deposited cobalt, and structural properties of the active component of catalytic systems have been determined. To establish these properties, the methods of BET, TPR, TPD-H2, IR spectroscopy were used. It is shown that the preparation procedure has a significant effect on the physicochemical characteristics of the samples.

Keywords: catalysts, cobalt, zeolite, dispersion, specific surface area of the active component

This article discusses one of the parts of the development of a device for testing samples of magnetostrictive materials. A study of various designs and an analysis of the sensitivity of the measuring system are presented. The substantiation of the use of a magnetic shunt to increase the sensitivity is given, which is confirmed in field experiments.

Keywords: magnetostrictive materials, basic magnetization curve, magnetic shunt, magnetic flux

This article analyzes the existing methods of obtaining helium at the oil and gas condensate fields of the Russian Federation. The prospects of using membrane technology for obtaining helium from natural gas are considered, based on a comparative assessment of the use of various methods of helium extraction. Taking into account the different permeability of methane and helium, the possibility of using different types of membrane installations for the production of helium is shown. As membrane elements, the greatest effect is obtained from the use of artificial polymer fibers of cellulose acetate, as well as quartz glass. These membrane materials have chemical resistance, including to acid gases that are present in the composition of natural gas, as well as high resistance to temperature amplitudes.

Keywords: helium, membrane technology, natural gas, gas condensate field, cellulose acetate polymer fibers

The paper describes the main agents, with their components and process diagrams, of the developed simulation model of the functioning of the distributed information processing system, created in the AnyLogic software environment. A method for constructing models with self-similar traffic is described. The article also presents a method for obtaining real (reference) indicators of the average response time of the system to user requests. The results of numerical experiments on the created models of the functioning of distributed information processing systems with self-similar traffic are presented. The main conclusions about the performed experiments are presented.

Keywords: distributed information processing system, self-similar flow, average system response time, simulation, object-oriented concept, agent-based and discrete-event modeling

The analysis of the use of renewable energy sources in Russia is carried out. The main features of the use of energy-efficient technologies in construction are considered. On the example of the construction of a 9-storey residential building, a comprehensive analysis of the construction area is performed. Solutions with the use of energy-efficient and green technologies are proposed.

Keywords: construction, energy-efficient technologies, green technologies, renewable energy sources, energy saving, energy efficiency

The article considers the issue of measuring and controlling the parameters of a high-voltage AC circuit using a Bragg grid. A model of a fiber-optic sensor based on the magnetostriction effect, the main component of which is a fiber-Bragg grating, is proposed. The 3D modeling of the magnetostriction process and the design of the block diagram are carried out.

Keywords: optical fiber, magnetostriction, bragg grid, AC, sensor, solenoid, coil, nickel, ferrite, MathCAD, COMSOL

Mathematical modeling and optimization of the process of controlling the sulfate regime when the apatite load changes on the phosphoric acid extractor is considered. It is shown that the preservation of the "sulfuric acid/apatite" ratio with a sharp change in the apatite consumption leads to a violation of the technological regulations for SO3. The algorithm of correction of this ratio in the transition mode is developed, which minimizes the probability of violation of the regulatory indicators. A variant of implementing the optimal apatite load correction procedure using stand-alone scenarios is proposed. The results were confirmed during the simulation.

Keywords: algorithm, mathematical model, stabilization of the sulfate regime, extraction phosphoric acid, change in the load on the extractor, phosphorus yield coefficient from apatite, optimization, autonomous scripts

This article provides information on the possibility of using offshore wind farms to provide energy to offshore structures such as oil and gas platforms, as well as coastal communities.

Keywords: wind power plant, wind generator, offshore power plant, SIEMENS generator, offshore oil and gas facility, oil and gas field, coastal settlement

To determine the optimal set of machines for the production of earthworks in urban conditions, it is necessary to make a multi-criteria selection of the set among possible combinations of machines, with each parameter having a certain level of influence. To determine the weight of the parameters, it was decided to conduct an expert survey. The minimum number of experts was determined, a survey was conducted, after which the data was processed, the level of consistency of the expert opinion was obtained, and the level of influence of each parameter on the choice of sets of machines was revealed.

Keywords: parameters that affect the choice of machine sets, expert survey, Kendall concordance coefficient, earthworks, Pearson coefficient

The article is devoted to the comparative analysis of the architectural features of the medieval temples of Simon the Cananite in New Athos (Abkhazia) and the Northern Zelenchuksky in Karachay-Cherkessia (Russian Federation) in the context of three-courtyard temples, the study of prototypes of their architectural forms, the description of the results of the analysis of building solutions of temples based on the X-ray phase method. This method is used for the study of these temples for the first time. The scientific novelty of the article is due to the fact that a comprehensive study of the planning, spatial solution and building material of the temples of Simon Kananit and Northern Zelenchuksky, based on the results of physico-chemical analysis, allows us to confirm their dating to the X century and establish the chronological proximity of the two monuments.

Keywords: medieval architecture of Abkhazia and Alanya, three court temples, X-ray phase analysis