No 1 (2024)
ECOLOGY
Removal of methylene blue dye from wastewater resulting from plant and mineral waste incineration after alkaline and salt activation
Abstract
The paper presents the results on the use of sorption material, which is a waste obtained from the co-combustion of waste bleaching clay containing vegetable oils (15–80 %), waste from the mechanical cleaning of oil seeds and sunflower husks for cleaning from the methylene blue (MB) dye. The physicochemical properties of ash were studied. It was shown that MG is adsorbed in a polymolecular form on the materials under study and the isotherms are S-shaped. The MB desorption from the obtained samples was studied. During desorption, the physical nature of sorption was established (MB dye is washed out from the surface of sorption materials up to 19.4 %).



Water quality of natural sources in the eastern part of the Tambov district
Abstract
Drinking water from non-centralized water supply sources possessed certain risks due to the lack of quality control and the impossibility of adjusting the composition. Monitoring of water quality from four natural sources in the eastern part of the Tambov region was carried out. Generalized (hydrogen index, total hardness, mineralization (dry residue), permanganate oxidation) and microbiological indicators were determined. The results of the study show that the water of all the studied sources cannot be recommended for consumption on an ongoing basis.



Environmental safety of base stations and user terminals of modern communication systems
Abstract
The issue of electromagnetic safety of base stations and subscriber terminals of modern communication systems is considered. The impact of electromagnetic fields created by communication equipment on human health and the environment is analyzed. An overview of international standards and recommendations on electromagnetic safety is provided, as well as a comparison of the impact of different generations of communication standards and existing mobile terminals from the point of view of environmental safety. Existing methods and technologies that can reduce the negative impact of electromagnetic radiation in the increasingly popular 5G mobile communications standard are considered. An example of the possible implementation of one of the methods for reducing the level of electromagnetic radiation affecting the human head when using mobile communications is given. Based on the analysis of the impact of electromagnetic radiation emanating from communication equipment on the human body and the environment, it was concluded that a more in-depth study of this issue and monitoring of electromagnetic radiation of mobile communication systems is necessary.



Research on liquid film neutralization of welding gas emissions
Abstract
To reduce the concentration of harmful gas emissions and aerosols in welding processes, it is proposed to use liquid neutralization, in which a film flow of liquid is organized along vertical plates. When gases or contaminated air move between the plates, the liquid film intensively absorbs gaseous and particulate pollutants. Absorption intensity into the film of water carbon monoxide and dioxide, as well as sulfur oxide, was studied at the experimental stand. In the experiments, the gas rate, liquid flow rate, and the concentration of harmful substances in the gas were changed. As a result of the analysis of the results obtained, the optimal gas speeds were identified and the importance of irrigation. In this case, the concentration of carbon monoxide and carbon dioxide can be reduced by 30 – 45 %, and the concentration of sulfur oxide – by 1.5 – 2 times over a contact length of 0.6 – 1.0 m. Generalization of the results obtained in a wide range of changes in gas concentrations, liquid flow rates and the speed of movement of the contaminated gas was obtained in the form of dependencies between the Sherwood, Reynolds and Schmidt numbers, from which it is possible to calculate the mass transfer coefficients at different contact lengths of the water and gas film and the overall characteristics of the neutralizer of harmful gas emissions.



The development of an environmentally safe waste management system regarding socio-economic factors
Abstract
Scientific and methodological approaches are used to assess the social and economic efficiency of creating an environmentally friendly waste management system, including the formation of a network of eco-industrial symbioses or innovative facilities in the field of resource conservation and the involvement of secondary resources in economic circulation. The subject of the study is the process of technogenic impact of generated waste on the environment. The purpose of the paper is to develop scientific approaches to the formation of a system of environmentally safe waste management, taking into account socio-economic factors, aimed at preventing man-made emergency situations. As a basic principle, a systematic approach to the environmentally safe handling of resource components of end-of-life, used construction and other products has been adopted - not in the form of hazardous waste, but as secondary material and energy resources in demand by society. An analysis of methods for assessing the economic efficiency of projects in the field of resource conservation, waste treatment and disposal was carried out. Approaches to the formation of a cost-effective, environmentally friendly infrastructure for waste processing have been developed. The socio-economic efficiency of creating industrial symbioses of waste processing infrastructure is shown. The obtained research results are intended for use in the process of forming a resource-saving system for environmentally safe handling of used products when developing territorial schemes and regional waste management programs, organizing an integrated system for forecasting and preventing man-made emergencies and their adverse consequences for the environment, territories, and population, economic entities.



Recycling of steam slag in composite materials to strengthen railway subgrades
Abstract
The paper substantiates the possibility of obtaining composite materials with improved functional properties for strengthening the subgrade, containing locomotive slag stabilized by an additive based on a gel-forming polymer. The mechanism of structure formation of the resulting organic-inorganic materials, consisting of macromolecules of high-molecular substances and inorganic inclusions subjected to cryogenic treatment, is shown. The structure of the sample is distinguished by the heterogeneity of the pore space, which is characterized by the presence of fine-porous and large-porous regions, which determines its thermophysical properties. It was revealed that the compressive strength of samples subjected to three cycles of cryogenic treatment and subsequent air drying was 3.5 MPa, thermal conductivity – 0.17 W/(m×K). It has been established that the resulting composite material is waterproof and frost-resistant, which makes it possible to recommend it for strengthening the subgrade in difficult climatic and engineering-geological conditions.



REGIONAL AND SECTORAL ECONOMY
Marketing monitoring as a tool for building a digital marketing system and competitiveness management
Abstract
Creating a digital marketing system requires the availability of reliable and specific information, marketing monitoring, transformation of the electronic circuit of the information system, including marketing, into a digital one. System analysis and automation of information support make it possible to carry out marketing design based on numerous data. The goals set and the tasks to be solved determine the choice of information support for marketing tools. Monitoring marketing problems and timely adoption of marketing decisions determines the need for proactive management. The implementation of a proactive approach creates the conditions for strategic planning and identification of development reserves. The implementation of marketing strategies based on the principles of a competency-based approach provides an innovative vector of development and increases the economic efficiency of the functioning of industrial companies. The study focuses on the need to assess the level of mastery of marketing competencies, the results of which will affect the quality of the development and implementation of proactive strategies and the competitiveness of industrial companies. Marketing monitoring determines possible development scenarios and further directions for ongoing marketing research.



A method for planning warehouse capacity based on the analysis of the goods flow movement dynamics
Abstract
The methodology for planning the development of warehouse premises is considered through the analysis of the movement of goods flows by assortment groups, taking into account receipts and consumer demand. The assessment of the current distribution center capacity is presented. A forecast for five years of cargo flow through the warehouse logistics complex of a retail trade enterprise was completed. Based on a statistical analysis of turnover and the enterprise development plan, coefficients were determined for calculating the storage volume of inventory. An algorithm for solving the problem has been developed, which is necessary for the design of an innovative warehouse distribution center based on a comparison of options for investment costs, payback period and operating costs. The presented evaluation criteria can be used by enterprises when designing warehouse complexes.



Economic assessment of the application of electrodialysis method with solution cooling in wastewater treatment of galvanic products
Abstract
It is proposed to change the design of the electrodialyzer by integrating a cooling system, tubes passing through a block of ion-exchange membranes, through which cooling water is supplied through the internal volume of the device. The device and operating principle of the electrodialyzer are presented and compared with the prototype. The possibility of using an electrodialyzer with solution cooling in the process of purifying galvanic wastewater is considered. A process scheme for the purification of industrial solutions using an electrodialyzer with an increased membrane area and cooling has been proposed. The costs of operating the described scheme were assessed. The economic effect of implementation and the payback period of the technological process are calculated.



The concept and tools of lean manufacturing
Abstract
The maximum possible reduction in costs and increase in consumer value of goods and services, optimization of all production processes, reduction of losses and costs in conjunction with the basic principles of quality management is one of the components of increasing the competitiveness of an organization. At its core, this is a new production innovation process in creating the final product - “production without frills”. An attempt has been made to define the methods of conducting business activities based on quality management and modern management principles, which enables to interpret the concept of lean production taking into account the tools and mechanisms presented in the concept with the constant improvement of the production process.



PEDAGOGY. THEORY AND METHODOLOGY OF TEACHING AND EDUCATION
Memorable places of V. I. Vernadsky: history of the construction of the building of the Tambov provincial zemstvo government and pedagogical aspects of his study (1903 – 1917)
Abstract
The pedagogical aspects of students' study of memorable places of the life and work of V. I. Vernadsky are highlighted. As an object of corporate pedagogy, which is also an object of historical memory, the administrative building of Tambov State Technical University (TSTU), which until 1918 housed the Tambov provincial zemstvo government and where the outstanding biogeochemist Academician V.I. Vernadsky carried out his social and political activities. The history of the creation of the administrative building of TSTU as an architectural monument associated with the socio-political activities in the Tambov region of the outstanding biogeochemist, academician V.I. Vernadsky is outlined. The reasons, stages, conditions and features of the construction of the last building of the Tambov provincial zemstvo (1914 – 1917) are considered.
A conclusion is drawn about the complex structural composition of the building, built on the basis of load-bearing structures of previous capital objects of the zemstvo government, acquired and reconstructed at the turn of the 19th–20th centuries. Built in 1914–1915, the administrative building of the TSTU for employees of the Tambov provincial zemstvo government, was used by the latter as office space from the fall of 1915 to February 1918, and then was operated according to its functional purpose by the highest government bodies of the Tambov province (1918 – 1921) and Tambov region (1937 – 1993) until the transition in February 1994 to the balance of TSTU. The complex composition of the building of the provincial zemstvo, one of the parts of which at the turn of the century was the place of zemstvo activity of the future academician V.I. Vernadsky, who did a lot for the development of science and education in Russia, is the rationale for placing a memorial plaque on its facade in honor of the scientist and the historical motivation for the decision on its transfer to the capital funds of the technical university.



The role of digital literacy in teaching a foreign language at a technical university
Abstract
Digital literacy has been studied as a necessary component in the practice of teaching reading and writing in foreign language classes, taking into account the role that information and communication technologies play in the modern educational process. The concept of digital literacy is analyzed in three aspects: communication skills; understanding the impact of technology and media on the world around us; understanding of how and what technologies can be used in formal or informal learning at a technical university. Issues related to the relationship between digital literacy and traditional and general literacy, as well as the presence of “complicating” and “facilitating” effects of literacy development are considered.



On the question of the methodology for teaching translation and use of modal particles in speech (based on German language)
Abstract
The paper considers the problem of didactization of modal particles (MPs) in the German language, including the analysis of their linguistic properties. Modal particles do not always have direct equivalents in other language systems, especially in Slavic languages. Difficulties associated with polysemy and multifunctionality of linguistic units further complicate the didactics of modal particles for students studying German as a foreign language. The analysis of the MP phenomenon is given. A description of some proposals on the problems of didactization of MP in the German language classes is given, which can be considered as a concrete attempt to demonstrate the developed modules for studying the phenomenon of MP and their implementation in the practice of teaching a foreign language at Russian universities.


