University School of Chemical Technology

The complex relationship between laser drilling parameters and hole properties complicates parameter selection and requires advanced optimisation methods. In this study, a fully connected artificial neural network (ANN) with three hidden layers was used to model the relationships between laser drilling parameters and the properties of holes produced in a 0.3 mm thick Haynes 242 alloy plate. The laser parameters varied in the following ranges: power (P) from 40 to 100

The effect of external gelation conditions on the properties of calcium and iron alginate hydrogels was studied, with a focus on their degradability in a model physiological medium, rheological characteristics, and ability to encapsulate cyanocobalamin (vitamin B12). The efficiency of cyanocobalamin loading and its release from alginate hydrogels was investigated.

Bioreactors are an integral part of biotechnological processes. Currently, the scope of their application is expanding and covers many areas of human activity. Bioreactor systems are widely used in biotechnological processes for the production of microorganisms, enzymes, cell lines, viruses, recombinant proteins, as well as various products of the food, cosmetic, pharmaceutical, medical, chemical and agricultural industries. It is worth noting that in addition to being used in production, these devices are used in wastewater and soil treatment processes from various waste at production facilities. Due to the active use of bioreactors, in order to optimize production processes and reduce operating costs, new highly efficient automated devices with a variety of functions are being developed using modern automation technologies, artificial intelligence and 3-D printing. As a result of the presented problem, many scientists and specialists in the scientific field and in production face difficulties in choosing the optimal equipment for performing research and production processes, since large amounts of dispersed data significantly complicate the selection process and require large time and financial resources to search and analyze the necessary information. To solve the problem of data fragmentation, an analysis of scientific papers by domestic and foreign authors on existing types of bioreactors and their classification was carried out. Based on the results of the analysis, this paper presents the first part of the structured information on the classification of bioreactors related to the design features of the devices – classification by design type and appearance. The characteristics of the existing types of bioreactors are given with a description of their structural components and the principle of operation, the advantages and disadvantages of the devices are noted, and examples of their use in various industrial sectors, including in the food industry, are presented. The data, structured based on the results of the analysis of scientific works by domestic and foreign authors, presented in this work, can be used as an auxiliary source of information during the educational process, as well as when performing research work. It is worth noting that the information collected will be used by the authors in the future when conducting a system analysis to develop an information and analytical complex in the field of biotechnological processes using bioreactors.

The purpose of this publication is to study the strategic prospects for the implementation of the concept of import substitution in the Russian economy, to study the possibility of organizing industrial production, taking into account the expediency of displacing certain types of imported products and harmoniously replacing them with domestic analogues, which is an extremely relevant issue for the modern Russian economy. The authors’ study systematizes the assessment of strategic import substitution models, defines the role of the country’s technological sovereignty, provides recommendations for improving the efficiency and technological efficiency of the Russian economy, and highlights the need to increase the competitiveness of the national economy and create innovative products and technologies.

The authors have presented a method to prepare a hydrophobic aluminum-oxide-based catalyst of isotopic exchange of oxygen between carbon dioxide and water. It has been shown that after the surface hydrophobization of granulated aluminum oxide, despite the decline in its catalytic activity, the obtained catalyst remains active in the reaction of catalytic isotope exchange. Mass-exchange characteristics of isotope exchange have been determined between the carbon dioxide and water in a countercurrent column filled with the mixture of the hydrophobic catalyst and the hydrophilic packing. It has been established that adding the catalyst to the packed bed leads to a significant improvement of mass exchange.