Thermal Regeneration and Reuse of Carbon and Glass Fibers from Waste Composites

This article aims to develop a method for regenerating and reusing carbon and glass fibers extracted from unrecyclable scraps of carbon plastics, printer parts, and laminating coating. A comparison of known methods of fiber regeneration revealed the advantages of thermal treatment: absence of costs of reagents and complex equipment; better preservation of composition; and strength of fibers. Based on the results of thermographic analysis of wastes in nitrogen and air, the destruction temperatures of their organic matrices were determined (200-460°С), and the use of calcination instead of pyrolysis was justified. The appearance and surface quality of the regenerated fibers are characterized by optical and electron microscopy. It has been established that quantitative extraction of pure carbon and glass fibers from waste crushed to 1 cm is efficient by their calcination at 700 °C for 0.5 h and 500 °C for 1 h, respectively. The principle of creating new composites with the obtained fibers based on the similarity of their composition and binding materials (matrices) has been proposed. It was shown that the introduction of 1 wt% of fibers into slag blocks and active carbon pellets considerably increases their compressive strength, but the bending strength does not change due to dispersed reinforcement. Possible improvement of mechanical properties of products requires reagent treatment of the fiber surface or the introduction of binder additives. Calculations show that the developed method of recycling composite waste can produce 2.3 tons/hour of reinforced building materials that are good for the environment and the economy, excluding expenses for landfill waste disposal and reducing the cost of the product by replacing the primary fiber for the secondary one. Doi: 10.28991/ESJ-2022-06-05-04 Full Text: PD

Потенциал организационно-деятельностных игр в модернизации экономики: методы анализа и решения проблем внутренней и внешней среды в социально-экономической и производственной сфере, профессиональное формирование кадров высшей школы

There are contradictions: in the system of training managers associated with the practice of training, which is largely abstract. The real problems of production, state and municipal management are concrete. At the same time, the potential of students, teachers, administrative staff of the higher school for solving urgent social and economic problems of the region and organizations, study, evaluation, correction of the educational process of training is not sufficiently used. The task is to develop specialists ' strategic thinking in the field of innovation, to develop the ability to solve specific management problems, to have practical skills in reengineering business processes, to attract the attention of young people to the use of process approach in production management, state and municipal services. Methodical task-to adapt students to solving real problems of society, to teach a holistic perception of the processes. to monitor the quality and volume of students ' knowledge in socio-economic and technological disciplines, use this information to improve the quality of the educational process. The result of training-the formation of an active position of future specialists in the modernization of the economy, the formation of teamwork skills; the ability to manage changes in the network of business processes. The work is addressed to students of the enlarged group of specialties "Economics and management", as well as teachers of the system of advanced training, managers and specialists of organizations, employees of consulting services, researchers

ICBrainDB: An Integrated Database for Finding Associations between Genetic Factors and EEG Markers of Depressive Disorders

In this study, we collected and systemized diverse information related to depressive and anxiety disorders as the first step on the way to investigate the associations between molecular genetics, electrophysiological, behavioral, and psychological characteristics of people. Keeping that in mind, we developed an internet resource including a database and tools for primary presentation of the collected data of genetic factors, the results of electroencephalography (EEG) tests, and psychological questionnaires. The sample of our study was 1010 people from different regions of Russia. We created the integrated ICBrainDB database that enables users to easily access, download, and further process information about individual behavioral characteristics and psychophysiological responses along with inherited trait data. The data obtained can be useful in training neural networks and in machine learning construction processes in Big Data analysis. We believe that the existence of such a resource will play an important role in the further search for associations of genetic factors and EEG markers of depression

Knomics-Biota - a system for exploratory analysis of human gut microbiota data

Abstract Background Metagenomic surveys of human microbiota are becoming increasingly widespread in academic research as well as in food and pharmaceutical industries and clinical context. Intuitive tools for investigating experimental data are of high interest to researchers. Results Knomics-Biota is a web-based resource for exploratory analysis of human gut metagenomes. Users can generate and share analytical reports corresponding to common experimental schemes (like case-control study or paired comparison). Interactive visualizations and statistical analysis are provided in association with the external factors and in the context of thousands of publicly available datasets arranged into thematic collections. The web-service is available at https://biota.knomics.ru. Conclusions Knomics-Biota web service is a comprehensive tool for interactive metagenomic data analysis