Research and improvement of the process of two-stage profiling of tubes for special purposes

Roll-forming process is used in manufacturing multi-beam oil tubes, while reducing their outer profile diameter and forming star-like profile. In this paper a steel tubes are studied with a drawing and pushing processes. This study gets into different issues including elastoplastic behavior, contacts and friction using finite element analysis. In simulations, a plane symmetric steady-state model is used. Numerical results are compared with experimental results. A better understanding and modelling of the behavior of materials lead to a new form of roller tool with significant advantages. © 2019 Published under licence by IOP Publishing Ltd.The reported study was funded by the state budget themes “Theoretical foundations for the development of new processes and machines for improving the competitiveness of manufactured products”, “Developing the theoretical foundations of technologies and equipment for producing new types of metal products”

Corporate governance of industry-specific education

The article proposes the use of new theories and approaches in the formation of interaction within the model of relations «corporation - transport universities». The main provisions of theories of resource exchange, aimed at achieving sustainability of the organization are analyzed; the problems of formation and implementation of the theory of resource exchange in the management of industry-specific education and universities are highlighted. The features of interaction between universities and enterprises of the railway industry in modern conditions are considered, the problems of inadequacy of resource exchange are identified. The ways of solving the selected problems in the direction of overcoming opportunistic behavior, the development of joint educational programs of higher education that provide high-quality training of managers and specialists with relevant competencies, the formation of professional standards for managers and specialists in the transport industry. An organizational mechanism for coordinating the efforts of participants in the interaction, the introduction of a relational contract aimed at long-term trusted cooperation is proposed. © 2021 Author(s)

The problem of individualization of legal entities in terms of innovative development of the Russian Federation and the European Union economy

This article is a comprehensive analytical study of the problem of individualization of legal entities in terms of innovative development of the Russian Federation and the European Union. Using the latest methodology of scientific research, the authors provide a justification of the legal institution of individualization, as well as offer a wide range of means of individualization of innovation actors and participants, including in the virtual space of the Internet.peer-reviewe

Comprehensive Disposal of Decommissioned Vehicles

The article concerns the final stage of the life cycle of vehicles (on the example of Russia). The purpose of the study is to develop an organizational scheme for the gradual creation of a unified system for the disposal of all types of vehicles that are out of service. The study included a legal, technical, and territorial analysis. For territorial analysis, statistical data were taken for the following types of transport: buses, trucks and cars. The result of the work is the division of recycling enterprises by recycling levels, namely, the use of classification A, B, C, D. Recycling centers organization is usually considered within the Federal districts, which will lead to the dispersion of recycling capacities throughout Russia. The Federal district will have a radical ring system of organizing recycling centers at different levels. The State should create a unified recycling system with the adoption of regulatory documents on the interaction of participants in the disposal of vehicles, it should involve commercial organizations in recycling activities in future. The prospects of the study suggest 3 options for the placement of warehouses and recycling centers for their effective operation and address the issue of recycling of highly specialized transport. © 2021 Elsevier B.V.. All rights reserved

Motivational Elements of the Human Factor for the Implementation of the "vision Zero" Concept in Railway Transport

The paper is devoted to expanding the composition of the studied elements of the human factor that affect the level of industrial injuries. The significant achievements of JSC "Russian Railways" are shown in reducing injuries and the tasks of implementing the "Vision Zero" concept, which can be solved if additional reserves are attracted. The purpose of the paper is to widely include motivational elements in the human factor, which allow approaching the implementation of the concept of zero injuries. An overview of the studied factors of injuries in the industry is given. Based on the conducted research, motivational elements that have an impact on the safety of production processes are identified. The use of the SHELL concept allowed approaching the systematic study of the problem of injury minimization based on the study of the relationship between a person and the organization's resources. Problematic behavioral characteristics of industry employees and ways to solve them are identified. Obtaining an objective picture of the real state of the motivational sphere is possible by using a comprehensive approach with the involvement of additional research results. Research methods: expert, sociological survey, statistical data analysis, comparison, system analysis. As a result, the following conclusions are obtained: the construction of an industry system of personnel motivation in relation to reducing the level of industrial injuries requires the use of research results on the motivational sphere of employees. These results will allow implementing a comprehensive approach, making additions to the mechanisms of management actions to reduce injuries. © 2021 Elsevier B.V.. All rights reserved

РАЗРАБОТКА СПОСОБА ОПРЕДЕЛЕНИЯ КАТИОНОВ ЛИЗИНА И ТИАМИНА В ВОССТАНОВЛЕННОМ МОЛОКЕ С ИСПОЛЬЗОВАНИЕМ ПД-СЕНСОРОВ

The sensitivity and stability of the response of the PD-sensors based on membranes MF-4SC in K-, H-, Lys-forms in solutions of the reconstituted milk were investigated. A multisensory systems with PD sensors and ion-selective electrodes for the recognition of reconstituted milk containing powdered milk from 0.40 to 8.46 mas. % is developed. The sensitivity of PD-sensors to cations of lysine in the test solutions containing 0.40 wt. % of powdered milk and 1.0·10-3-1.0·10-1 M of LysHCl was 29 mV/рС for membranes in the К-type. The sensitivity of PD-sensors to cations of thiamine in the test solutions containing from 0.40-3.40 wt. % of powdered milk and 1.0·10-4-1.0·10-1 M of ThiaminCl was from 18 to 12 mV/рС for membranes in the К-type. This sensitivity is sufficient for the quantitative determination of cations of lysine and of thiamine in solutions of reconstituted milk. The limit of detection of cations of lysine and thiamine in reconstituted milk was 4.0·10-6 М and 2.9·10-6 М respectively. The relative error of measurement was not more 10 %.Keywords: PD-sensor, Donnan potential, multisensory systems, reconstituted milk, lysine, thiamine(Russian)DOI: http://dx.doi.org/10.15826/analitika.2013.17.4.008O. V. Bobreshova, A. V. Parshina, E.A. Ryzhkova, T. S. Titova Voronezh State University, Voronezh, RussiaFederationИсследованы чувствительность и стабильность откликов сенсоров, аналитическим сигналом которых является потенциал Доннана на границе ионообменная мембрана/раствор электролита (ПД-сенсоров), на основе мембран МФ-4СК в калиевой, водородной и лизиновой формах в растворах восстановленного молока. Разработана мультисенсорная система с ПД-сенсорами и ионоселективными электродами для распознавания образов восстановленного молока с массовой долей сухого от 0.40 до 8.46 %. ПД-сенсоры на основе мембран МФ-4СК в калиевой форме использованы для количественного определения катионов лизина и тиамина в восстановленном молоке с концентрацией сухого молока 0.40 % мас. и 0.40-3.40 % мас. соответственно. Предел обнаружения катионов лизина и тиамина в восстановленном молоке составил 4.0·10-6 М и 2.9·10-6 М соответственно. Относительная погрешность определения не превышала 10 %.Ключевые слова: потенциометрия, ПД-сенсор, мультисенсорные системы, перфторированные мембраны, восстановленное молоко, лизин, тиаминDOI: http://dx.doi.org/10.15826/analitika.2013.17.4.00

Potentiometric Multisensory Systems with Novel Ion-Exchange Polymer-Based Sensors for Analysis of Drugs

This paper examines potentiometric multisensory systems that consist of novel cross-sensitive PD-sensors (Potential Donnansensors). The analytical signal of PD-sensors is the Donnan potential at the ion-exchange polymer/electrolyte test solution interface. The use of novel sensors for the quantitative analysis of multicomponent aqueous solutions of amino acids, vitamins and medical substances is based on protolytic and ion-exchange reactions at the interfaces of ion-exchangers and test solutions. The potentiometric sensor arrays consist of PD-sensors and ion-selective electrodes. Such systems were developed for the multicomponent quantitative analysis of lysine monohydrochloride, thiamine chloride and novocaine hydrochloride solutions that contained salts of alkaline and alkaline-earth metals, as well as for mixed solutions of nicotinic acid and pyridoxine hydrochloride. Multivariate methods of analysis were used for sensor calibration and the analysis of the total response of sensor arrays. The errors of measurement of the electrolytes in aqueous solutions did not exceed 10%. The developed multisensory systems were used to determine the composition of a therapeutic "Mineral salt with low content of sodium chloride" and to determine concentrations of novocaine in sewage samples from a dental clinic

Dynamics of vegetative, insomnia and neuropsychological manifestations during the treatment of post-COVID syndrome

Introduction. Asthenia, vegetative manifestations, sleep disturbances and psycho-emotional background are companions of the coronavirus infection, the issue of drug correction of which is especially relevant. These symptoms disrupt the habitual way of life of patients for a long time, and in special cases lead to disability.Aim. To study the mental, somatoform and cognitive aspects of anxiety disorders after coronavirus infection during treatment with tofisopam (Grandaxin®) 150 mg/day.Materials and methods. The study included patients who had experienced a new coronavirus infection, who, after the end of treatment for the underlying disease, had complaints suggesting the presence of an anxiety disorder. The Hamilton scale was used to assess the level of anxiety. Examination of patients was carried out before the start of treatment, after 2, 4 and 6 weeks of therapy.Results and discussion. Prior to the start of therapy, all patients had an overall high level of anxiety: the average HAM-A score was 31.4 ± 2.92 points. At the end of Grandaxin® therapy, all patients showed a decrease in the level of anxiety: the average HAM-A score was 12.08 ± 2.27 points (p < 0.001). The maximum decrease in the severity of vegetative disorders was noted by the end of the 6th week of therapy with Grandaxin®. Thus, the indicator of this subscale decreased by more than 2 times – from 2.46 ± 0.54 to 1.05 ± 0.28 points (p < 0.001). The severity of insomnia during six weeks of therapy with Grandaxin® decreased from 2.56 ± 0.54 to 0.96 ± 0.45 points (p < 0.001).Conclusion. Psycho-emotional disorders (more often in the form of increased personal anxiety), sleep disorders, vegetative disorders, asthenic syndrome significantly affect the quality of life of patients who have had a new coronavirus infection. Involvement of the structures of the autonomic nervous system and central structures that regulate GABAergic transmission leads to significant vegetative failures, which requires pathogenetically substantiated drug correction of these disorders