Kyivmetroproekt (Ukraine)

The study provides a basis for a craft technology of producing oils from the kernels of stones of various peach cultivars harvested in 2020, 2021, and 2022. The most suitable cold pressing modes (extra virgin) have been chosen for kernels obtained from different cultivars. Crushed peach kernels should be wet-treated and heat-treated at 40–50 °C for 15–20 min. During extraction by pressing, it is recommended that the crushed kernels (extraction mash) should not be heated above 50–60 °C for 5–7 min. The effectiveness of pressing has been established to be 33–47 % of oil. The thickness of an oilcake piece determines the effectiveness of pressing extraction. The thinner the oilcake piece, the more effective the pressing is: the load withstanding time, the compressive force, and the loading rate are significantly reduced, and the yield of oil increases. Thus, the most effective parameters of the pressing extraction stage for the kernels of all the peach cultivars are: residual oil content in the oilcake 5.0—6.0 %, oil yield 94.0 %, oilcake thickness 33.0 mm, load withstanding time 3.0 min, compressive force 10.0 kN, loading rate 5.0 kN/cm.

The paper considers some components of the digital educational environment of a modern teacher training university to support the educational process of teacher students (pre-service teachers).The relevance of such an environment in the long-term conditions of the pandemic as well as the martial law in Ukraine is indicated.It was these two factors that influenced the active development and use of the digital environment to support the academic educational process.One of the components of such digital educational environment is MOOC that is also used for informal education.This paper also reviews the first results of the recently completed implementation of the EDX platform in the digital educational environment to support pre-service teacher training.The article analyses the trends in MOOCs development aimed to support teacher training; discusses the results of the survey related to using MOOCs during the pandemic and the martial law; considers steps of implementation of MOOCs to support teacher training.

Updating the development of specific electrical loads of residential buildings of clusters 1 (up to 5 floors) and 2 (6-11 floors) based on actual measurements (with amendments to the Code of Rules 256.1325800.2016 "Electrical installations of residential and public buildings. Design and installation rules") contributes reducing the cost of technological connection in residential construction, as well as reducing the actual unused "locked power" at the same time as reducing electricity losses in power transformers. In the course of the study, an analysis has been made of the actual electrical loads of residential buildings in Moscow for the periods from November 1 to November 30, 2021 and from December 25, 2021 to January 31, 2022. The number of the studied sample for cluster 1 is 91 houses, for cluster 2 - 58 houses. When determining the maximum specific power of a sample set of multi-apartment residential buildings in Moscow in clusters 1 and 2, an average value and a confidence interval have been established, which "covers" the average of the general population with a probability of 95 %; a comparative analysis of the actual specific electrical loads of a residential building with the loads given in the Code of Rules has been carried out. Based on the results of statistical processing of a sample of multi-apartment buildings in clusters 1 and 2, the dependence of the maximum specific power on the number of apartments in a residential building has been determined with a trend line that clearly illustrates the trend in the studied dependence.

This article proceeds from correlation method for controlling the intensity and angular displacement of the output laser beam. Angular spectra of plane phase diffraction gratings of different relief are investigated under illuminating them by interference field and under its transverse shifting relative to grating. This approach increases the number of control parameters for formation of optical field at the output of the optical arrangement.