Technological Modes Research Articles

Technology of combined preparation of mating surfaces for high-quality mating of finned shells

In this paper, the issues of technology of combined preparation of mating surfaces for high-quality mating of finned shells of the ogival profile are considered. The proposed technological modes make it possible to improve the quality and achieve the specified parameters of assembly of units of high-tech products of aerospace technology.

ЦИФРОВИЗАЦИЯ КАК ФАКТОР УСТОЙЧИВОГО РАЗВИТИЯ ОРГАНИЗАЦИЙ ВЫСШЕГО ОБРАЗОВАНИЯ

Innovative processes in our country, historically conditioned by the development of the national economy, are the basis for the transition from one technological mode to another. There is an active introduction and use of digital technologies in all spheres of society. It is important to note that digital technologies for the country are a kind of driver for the development of the national economy (national economy), increasing the competitiveness of economic entities, while at the same time ensuring sustainable development in general. Under these conditions, the importance and responsibility of the education system to society has significantly increased and made higher education a key factor in the transition to sustainable development. Given the role of universities in preparing new generations and society for a more sustainable future, it has become important to measure the introduction of digital technologies in higher education institutions as an indicator of sustainable development and their impacts on sustainability. The article discusses the importance of taking into account the digitalization process in reports on sustainable development in higher education institutions. The relevance of the study is related to the need to adapt sustainable development reports to increase their applicability in the context of higher education by introducing additional indicators characterizing the digitalization process into the main sections of non-financial reports.

Mathematical modeling of obtaining cocoa butter substitute based on its comprehensive quality indicator

Vegetable oil is fundamentally different from other available products in its composition, components and other properties. Selection of optimal technological modes for producing a cocoa butter substitute based on its complex quality indicator. Therefore, it is important to conduct scientific research to improve quality. The complexity of the mechanism of the processes of hydrogenation and interesterification of cottonseed oil gives preference to mathematical models obtained by processing statistical data. Recommended purification methods differ from existing ones in priority and convenience. The problem of obtaining a cocoa butter substitute from vegetable raw materials is becoming very urgent. Optimal technological modes and compositions of processed raw materials for the processes under consideration.

ГРУППИРОВАНИЕ ПО ТЕХНОЛОГИЧЕСКИМ ПРИЗНАКАМ ОПЕРАЦИЙ ВРЕЗНОГО БЕСЦЕНТРОВОГО ШЛИФОВАНИЯ

Mortise, as one of the methods of centerless grinding, has high productivity and processing accuracy. However, the scope of its application in existing industries is limited to a rather narrow area. This is largely due to the lack of a fully formed methodological base for the stages of equipment setup and management of the implementation of the technological operation. The article presents proposals for the structural classification of inset centerless grinding, including their grouping according to the criterion of uniformity of design procedures of individual stages of technological support. The created formalized models ensure the consistent formation of clusters of processing schemes with the possibility of taking into account specific production conditions. The results of the grouping of processing methods for design procedures for the appointment of rational technological modes of mortise centerless grinding operations are presented.

Development of an effective technology for producing composite wood-plastic board materials for construction and furniture purposes

This article presents the results of research in the development of an effective technology for obtaining composite wood-plastic board materials for construction and furniture purposes based on fillers from cotton stalks, which are agricultural waste, and polymer binders based on modified urea-formaldehyde and gossypol resins, epichlorohydrin, benzyl chloride, and polyvinyl chloride. The study revealed a correlation between the ultimate bending strength, tensile strength and water absorption with the parameters of pressing polymer-fillers of the mass. At the same time, to obtain composite wood-plastic board materials, it is recommended to use a urea-formaldehyde resin modified with reactive structuring additives as a binder. It has been established that the optimal technological mode for pressing the mass of polymer fillers and cotton stalks is: specific pressure 35 kg/m², pressing temperature 168-170°C, heating duration 7-10 minutes. Key words: technology, composition, modified urea-formaldehyde resin, cotton stem filler, wood-plastic board, specific pressure, pressing temperature, heating duration, water absorption, tensile strength.

History of Treatments Used to Treat Gout and Hyperuricemia

ABSTRACT: Treatment of arthritis has been gaining momentum most recently with new advancement in technology and various modes of treatment available. But; with changing life-style and unhealthy dietary habits; cases of hyperuricemia and gout are increasing at an alarming rate. Gout attacks joints and the Heat, inflammation, discomfort, inflammation, and intense discomfort are a few symptoms. Inhibitors of Xanthine Oxidase used in treatment for hyperuricemia and arthritis which reduce the serum urate level. Study on further applications of medications to combat hyperuricemia and gout is currently under way which has a scope for further development. synthesis of inhibitors of Xanthine Oxidase has been showing for preventing tophaceous deposits from accumulating. Many different methods have been used to combat hyperuricemia throughout the history and many different modes of treatment are currently employed which provide relief from hyperuricemia and gout due to the advancement in technology. The advancement in modern science has ensured that the treatment of hyperuricemia and gout has developed rapidly to effectively treat the disease which has been increasing at an alarming rate in the last two decades. Emphasis has also been given to find out new breakthroughs in the discovery of alternatives for traditional drugs that are used to treat hyperuricemia and gout which will provide relief to patients.

Mathematical modeling of the technological process of twisting a waveguide

Twisted waveguides are part of waveguide paths of antenna- feeder devices of spacecraft. They have high requirements for accuracy and reliability. They are made of profiled rectangular pipes. The twisting of waveguide pipes with a cross- sectional size of less than 11x5.5 mm is carried out in the device using a rigid calibration mandrel. The calculation method determined the main parameters of the technological process of twisting the waveguide tube (torque M, drawing force Pпр). When twisting workpieces with cross sections according to GOST, the torques (M) and drawing forces (Pпр) from the cross- section sizes vary according to a nonlinear relationship. Twisting the workpiece from M4 requires less torque (M) and drawing force (Pпр) than for the workpiece from M1. By mathematical modeling, it is possible to select the optimal technological mode in advance, thereby ensuring high quality of waveguide twisting manufacturing. To substantiate the calculation results, the methods of control of technological parameters and quality control of the product manufacturing were considered. A problem has been found in measuring the torque and pulling force when twisting the workpiece. Therefore, the pulling force should be measured from the machine. A method for measuring torque using a non- contact torque sensor is proposed. The manufacturing quality is supposed to be carried out by the STRESSVISION mechanical stress scanner, and electrical tests.

Methodical approach to determining the maximum permissible velocity of the gas flow with mechanical impurities using numerical modeling of erosion processes of the main technological elements of wellhead equipment

Long-term operation of gas fields is accompanied by changes in the stress-strain state of the productive reservoir, including irreversible processes of its destruction. The destruction of a productive reservoir is one of the reasons for the removal of mechanical impurities at the wellhead, abrasive wear, metal degradation, the appearance of defects in pipelines, equipment and wellhead binding. In order to avoid serious consequences from the development of defects due to the removal of impurities, various examinations are carried out using non-destructive testing methods. The need to monitor the actual condition of pipelines and wellhead equipment of wells operating the Cenomanian and Valanginian formations is due to the fact that during operation significant damage and destruction of the main elements of technological equipment may occur due to the removal of mechanical impurities, water, as well as the formation of hydrates, sand jams, etc., this can lead to serious economic losses, as well as the negative impact on the environment as a result of leaky connections and assemblies. Thus, in order to ensure reliable operation of producing gas wells in conditions of destruction of the bottom-hole zone of the well, it is necessary to choose a reasonable technological mode of operation, in which the risk of formation of sand and liquid plugs is reduced, and the negative impact of the removal of impurities on the condition of the equipment is minimized. Keywords: gas well; numerical modeling; bottom-hole zone; technological mode.

Phase Equilibria and Interdiffusion in the Ternary System Epoxy Oligomer-Polysulfone-Alkyl Glycidyl Ether.

Phase equilibria, interdiffusion and structure in the initial uncured mixtures of epoxy oligomer-polysulfone-alkyl glycidyl ether were studied. Binodal curves were constructed on isothermal sections of the ternary phase diagram. Thermodynamic mixing parameters were calculated and spinodal curves were plotted. The interdiffusion coefficients of components, establishing the technological modes of mixing the components, were determined. To validate the phase diagram, the phase structure of mixtures, the composition of which at a temperature of 40 °C corresponds to heterogeneous and homogeneous regions, was studied.

Advancing Medical Waste Management in China: Leveraging Technological Innovations and Strategic Disposal Practices for Sustainable Development

Global epidemic prevention and control has entered the normalization stage, but the situation of local epidemic prevention and control is still complex and severe. In the new historical period, how to build on past successes to further advance our cause, and how to grasp the key issues and solve specific problems need to be examined and discussed from the perspective of technological change and development. Based on the systematic analysis of the current situation of China's existing medical waste disposal technology, and based on the opportunities and challenges faced by management and disposal technology, this paper analyzes the specific practices, work results and experience the enlightenment of the existing disposal technology and disposal mode, and puts forward the research and judgment of the future development pattern of China's medical waste, which provides a basis for the future treatment and disposal of China's medical waste and fine management.

Determinants of Profession Choice in Students’ Educational Strategies in the Context of the Reproduction of Human Capital

Introduction. The relevance of the study is determined by the necessity to optimize the process of reproduction and building up the human capital of the Russian Federation, where the primary place belongs to education. The article discusses the educational strategies of Russian students in the current conditions of transition to the sixth technological mode, when the formation of a learning society and knowledge economy is of particular importance, which requires additional investment in human capital and educational capital in particular. The purpose of the study is to describe the educational strategies of Moscow students as dynamic systems of perspective orientation of an individual, as well as constructing their future life in accordance with a certain plan. Materials and Methods. The empirical basis of the article constitute the findings of the online sociological survey “Students of Russia: civic culture and life strategiesˮ, conducted in April‒May 2022 with an additional representation of the array in Moscow. Having carried out an exploratory factor analysis by the method of principal components and rotation by the Varimax method, the authors identify factors that allow interpreting various educational strategies for choosing a direction of study by students. Results. Comparing the social practices of students in Moscow with those in the regions, identifying the dominant factors in choosing a speciality/academic specialism, the authors identify speciality choice indices that are determined by different factors and lead to studentsʼ adherence to different types of educational strategies: “rationalˮ strategy, “inner circle of trustˮ strategy and “random choiceˮ. Discussion and Conclusion. The study conducted by the authors made it possible to formulate a number of significant conclusions that make a significant contribution to understanding the structure of the social capital of today's youth. The development of the educational capital of the younger generation is an important task in the process of ensuring the development of the entire Russian society as a whole.

STATIONARY MODE OF FLUID FLOW IN THE PIPELINE IN THE PRESENCE OF ASSOCIATED SAMPLING AND PUMPING

Pipeline transportation of oil and petroleum products plays a significant role in the transport system of the Russian Federation. When operating oil pipelines, reliability and energy efficiency are the most important criteria. To achieve these indicators, it is necessary to perform optimal technological modes. When constructing models of technological regimes, a methodology is used in which the movement of oil and petroleum products is considered as steady. Based on this assumption, the throughput, pump operating modes, strength characteristics and other parameters are determined. During the operation of the equipment, almost every day it is necessary to switch from one mode to another, which entails unsteady fluid movement for some time. At the same time, the unsteady mode makes up a small part of the total operating time of the system.The beginning of studies of unsteady fluid processes in pipes dates back to the last quarter of the 19th century. N. E. Zhukovsky made a fundamental contribution to the study of this problem. His classic work on water hammer in water pipes was the beginning for the creation of a large number of works in pipe hydraulics. The problem was solved for an ideal elastic fluid, i.e. without taking into account the friction forces against the pipe walls. The resulting formula, according to which the pressure increment is proportional to the velocity, has received numerous experimental confirmations for cases when it is possible to neglect pressure losses to overcome hydraulic resistances. N. E. Zhukovsky also obtained a formula for determining the sound velocity of a liquid droplet in a pipe with elastic walls. It is proved that this speed depends on the pipe material and its thickness.In the future, a large number of works were carried out to study the flow of liquid and gas in round pipes. The fundamental works of I. A. Charny, who obtained a mathematical model in the form of a system of partial differential equations of hyperbolic type, proved fruitful in this direction. Linearization of the equation, taking into account viscosity and hydraulic resistance allowed the researcher to obtain solutions to a number of engineering problems.The introduction of the Dirac function in the description of selectionpumping at specified points made it possible to describe processes in complex pipelines with one partial differential equation.This article discusses a horizontal section of the pipeline with sampling and pumping points. A stationary process for a drip liquid is considered. The problem is solved using the sine-Fourier transform.

Экспериментальное исследование микроклимата на ТЭЦ

Microclimate quality required by regulatory documents in the main housing of the thermal power plant is necessary to manage the technological process and comply with labor protection requirements. Thus, obtaining information about microclimate parameters is an urgent task. A passive experiment using state-of-the-industry measuring instruments is carried out to obtain the microclimate parameters in the main housing of the thermal power plant. The main (temperature and relative humidity) and auxiliary (CO2, РМ2.5, tVOC) characteristics of the air environment in the turbine and boiler sections of the main housing of the Ivanovo CHPP-2 are obtained. Analysis of experimental data allows us to draw conclusions that the microclimate parameters at the thermal power plant are in compliance with the current regulatory documents. Information about the state of the microclimate depending on the technological operating mode of the thermal station and the environment will allow us to develop energy-saving measures to reduce energy consumption for in-house needs. It can be useful to check the reliability of the existing and new methods to calculate the microclimate at thermal power plants.

Authenticity, Releasement, and Mindfulness

The concept of mindlessness is tacitly present in Heidegger’s earlier and later works. In Being and Time, Dasein is mindless insofar as it engages with the world in ways already publicly interpreted by das Man. In Heidegger’s later work, mindlessness reaches its peak in the technological mode of revealing, according to which reality is disclosed as a standing reserve. In this technological mode, efficiency becomes an end in itself. Mindlessness is present here in two senses: (a) efficiency is a publicly dictated norm, which we adopt more or less automatically and (b) efficiency demands that we are never fully absorbed in our work, but always concerned to move on to the next task. The question then arises as to what extent mindfulness is associated with the structures Heidegger describes as being opposed to inauthenticity and technology, namely authenticity and releasement. In what follows, I argue that mindfulness can be understood as a tool to cultivate the distance from the they-self necessary to engage more authentically with the world or to cultivate a free relation to technology. Mindfulness can also be viewed as a tool to dwell in the fourfold. I conclude by drawing distinctions between Heidegger’s thought and the practice of mindfulness.

ISOLATION OF HIGH PURITY PIPERYLENE

Piperylene is a valuable raw material component for petrochemical synthesis, perfumery and cosmetic products, and is used as a solvent for petroleum products in the production of synthetic rubbers and latexes, and in the paint and varnish industry. Piperylene in the form of a fraction is produced in the production of isoprene by the two-stage dehydrogenation of isopentane, where it is a secondary product of the main synthesis. Isolation of commercial piperylene of high purity will allow the production of a value-added product and expand the sales market. Currently, restrictions on the production of commercial piperylene are associated with the high content of an impurity – cyclopentadiene. Previous studies by the author showed the feasibility of extracting cyclopentadiene at the stage of obtaining the catalyzate of the second stage of isoprene dehydrogenation. Simulation of the technological scheme in the application program showed that, together, the extraction of cyclopentadiene by a chemical method and a change in the technological operating mode makes it possible to isolate piperylene with a content of 99.45 % wt and CPD equal to 0.0046 % wt.

Подходы к оценке эффективности стратегий мезо- и микроуровней на основе индекса экономической сложности

The world economy is on the threshold of radical transformation of sectoral structure, modernization, robotiza-tion. The principles of its existence will change significantly in the near future (re-industrialization, regionaliza-tion, robotization, Internet of Things, cyber-physical complexes, etc.). Obviously, the development strategies of states, having a significant period of implementation, should already take into account new trends and prepare their economies for new realities. An important aspect is to build a coherent hierarchy of strategic plans by lev-els of management (state macro-level, regional meso-level and the level of individual economic entities – en-terprises (micro-level)). Cross-cutting strategy indicators are needed to address this challenge. It is clear that they should reflect the effectiveness of such strategies, such as the degree of alignment with the ideas of the new industrial policy and the current technological mode. The article attempts to analyze the possibilities of tools for assessing economic complexity at the subnational level and at the level of an individual enterprise.

Алгоритм одоления монопрофильности арктического города: случай Норильска

The research question of the article — identifying ways to overcome the single-industry nature of the city of Norilsk — have been concretized by solving the following tasks: to substantiate the “specificness” of Norilsk among the largest Arctic cities of Russia; to determine the role of the agglomeration effect in strengthening the support of Norilsk for the projects of Taimyr and the entire Eastern Arctic; to deter-mine the potential of Norilsk Nickel’s service structures and urban entrepreneurship for new mining and infrastructure projects in the Eastern Arctic; propose mechanisms for implementing the Norilsk Support Strategy. The methodological base of the study was formed by the concepts of technological modes, development blocking of old-industrial / mono-industrial territories and supportive settlements. Main results: Norilsk is the most specific among the largest Arctic cities of Russia according to the composite index, made up of nine key demographic, economic, socio-cultural indicators. Non-standard approaches are needed to diversify its economy. The agglomeration effect can constructively contribute to Norilsk’s transformation from a single-industry city into a base city for the development of the Eastern Arctic. The most important areas of structural transformation of Norilsk’s economy include strengthening the practice-orientation and geographical expansion of consumers of services of the local scientific and educational complex; establishment of an entrepreneurial layer in new industries and types of production activities; and entry of the city's entrepreneurship together with the plant's service structures into the market of projects and settlements in the Eastern Arctic. The main mechanisms for the implementation of the Norilsk Strategy: “mirror” actions in the eastern Arctic of the city and the Norilsk Nickel combine; transformation of Norilsk into a center for the provision of security services for the territories of the eastern Arctic; a center of formation of the Arctic cruise tourism from Dudinka to Anadyr; a center for accumulating best practices of renovation of the Arctic housing and communal services for their replication in the cities and towns of the Eastern Arctic. Recognition of Norilsk’s success in becoming a base city in the Eastern Arctic will be an increase in its administrative status: transformation into a city of federal significance.

Information Infrastructure & Digital Divide: In the context of Indian Universities — The Economical and Financial Context

"Each and every organization, institution needs information and allied objects for the growth and proper development and without a sufficient amount of information it is very difficult to sustain and run an organization. Universities and Higher Educational Institutions work and function based on various academic and administrative units and sections; and in each and every section information is very much crucial and valuable. The development of information related activities is called Information Systems and ‘Information Infrastructure’ is a broad concept which is required for information collection, processing, management and delivery in manual and technological mode. There are different types of sections and sub-sections exit in model Information Infrastructure systems. Each and every universities depend on proper information management systems and there are issues in relation to social, technical, psychological, economical and managerial. In an university system and general organization there are numerous systems and procedures in managing data, information and other documentation. Many institutions keeps information as usual and without any professionalism and that lead to the failure of organizational goal and proper development. Economical and financial issues are alarming in purchasing and maintaining technologies, systems, and Human Resources, etc. And this paper is about the basic of Information Infrastructure with a special focus on economical and financial issues in the context of Digital divide."

What Factors Affect College Students' Learning Satisfaction? - A Research on Online Learning During Covid-19 in Zhumadian Vocational and Technical College

During the 2020 epidemic in China, online teaching was promoted, but fewer studies have investigated the learning satisfaction of college students who have been taught online on a large scale for an extended period of time. The factors that affect learning satisfaction mainly include students' basic attributes, learning resources, learning platforms and learning interactions. According to the results of the questionnaire survey, course content, course resources, platform technology, platform design, teacher-student interaction, student-student interaction, and interaction mode are the main factors affecting students' basic attributes. The survey results also showed that course content and interaction mode significantly affect students' learning satisfaction. Based on these findings, teachers should enrich course content to provide students with more practical, rich, and vivid teaching experiences. Additionally, teachers should pay close attention to their communication with students, offer timely guidance to students' learning, and provide feedback to any questions they ask.

Study of the yield of dry substances during extraction of grape seeds and flax seeds

The extraction process is one of the most widely used methods in the food industry for obtaining biologically active substances necessary for fortifying food products. The purpose of this work is to study the influence of temperature, extraction duration and the content of plant materials (grape seeds and flax seeds) in the extractant on the yield of dry substances. The influence of the duration of the extraction process on the yield of has been established dry substances: for grape seeds 70 minutes, for flax seeds 65 minutes. Research has proven that the optimal content of flax seeds and grape seeds in the extractant is 12 % by weight of the extractant, and the extraction temperature is 400 ℃. The use of low-frequency ultrasonic technology in conjunction with vacuum allows us to obtain the maximum yield of dry substances from the composition of plant raw materials. For the products studied, the maximum yield of dry substances was 17.5 %. According to the results of the study, the recommended technological mode for low-frequency vacuum-ultrasonic extraction of a combined solution: 50% grape seed and 50 % flax seeds is: vibration frequency 22 kHz, ultrasound power 0.3 kW, residual pressure 0.09 MPa and exposure duration 15 minutes.