The article considers one of the problems hindering the use of ceramic piezoelectric materials based on the BiFeO3 - BaTiO3 phases, which is caused by high values ​​of the dielectric loss tangent of these materials. It is assumed that this is due to different electrical conductivity of individual grains of this type of piezoelectric ceramics (Maxwell-Wagner effects), caused by the presence of iron ions in their composition, which have different oxidation states. In order to equalize the oxidation states of iron ions found in the grains of the considered ceramics, we used annealing of its samples in an atmosphere formed as a result of thermal decomposition of ammonium carbonate. It was found that this technique allows: a) to reduce the values ​​of tgδ of the CPM by 6 - 7 times; b) increase the polarizing field strength by at least 40%, and the value of the longitudinal piezoelectric modulus to 140 pC/N.

Keywords: piezoelectric material, electrical conductivity, dielectric loss, defect, iron ions, Maxwell-Wagner effect, reducing atmosphere, ammonium carbonate

This article analyzes the existing sources of power supply of oil and gas industry facilities, as well as the study of the possible use of alternative energy sources in industrial enterprises; The advantages and disadvantages of using this type of power supply for remote infrastructure are considered.

Keywords: energy, power supply, power plant, industrial facility, wind, solar radiation, power, power plant, wind energy, source

The article proposes to consider the possibility of using pipes from ductile iron with spherical graphite in the construction of oil pipelines to solve the problem of corrosion formation. In addition to corrosion resistance, such pipes also have other positive properties. A comparison is made with steel pipes, and the basic physical and mechanical properties of ductile iron with spherical graphite are also considered.

Keywords: oil and gas pipeline, corrosion, testing, installation, connection, deposit, steel, ductile iron (ductile iron), strength, resistance, oil

Currently, special attention is paid to the existing ecosystem of urban development, special attention deserve wherein resort towns. There is a number of environmental concerns of the KMW region attractive for its natural-resource data, one of which is the noise pollution of the urban environment. The main source of this pollution for the city with the nonproductive functional orientation is transport infrastructure. Formation of cities in the region, which began in the XIX century, did not provide for traffic congestion and power sources of the modern city, so today it is necessary to analyze the noise loads and, if necessary, to organize the work to restore an enabling environment resort towns of the KMW region.

Keywords: Caucasian Mineral Waters, noise, noise impact, sanitary and hygiene regulation, the intensity of the noise, characteristics of the noise