bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of Innovation “tokotki.id” to Increase the Capacity of Household Financial Improvement Strategy of Indonesian Migrant Community in Malaysia
Authors: Agustina Yuli , Wilujeng Ita Prihartining , Prohimi Afwan Hariri
Published: November 2024

tokotki.id is an innovation aimed at enhancing the financial improvement strategies of Indonesian migrant households in Malaysia. The platform offers various services and products specifically designed to meet the needs of the Indonesian community seeking Malaysian products through the currently popular "Jasa Titip" (proxy shopping) service in the online business world. With its innovative approach, the presence of tokotki.id plays a role in addressing the financial challenges faced by the Indonesian migrant community in Malaysia. Through tokotki.id, migrants can easily and efficiently access various Malaysian products to sell in Indonesia. Additionally, the platform provides information and advice on personal financial management and tips for optimizing their income in Malaysia. Thus, tokotki.id helps migrants enhance their financial management capabilities through an online business model. Another feature that can be utilized from tokotki.id is the online marketplace, which allows migrants to sell local Indonesian products to the community in Malaysia. This creates new business opportunities for migrants to increase their income and diversify their sources of earnings. Furthermore, tokotki.id provides a platform for migrants to share experiences and tips about life in Malaysia, fostering a solid and supportive community. Indonesian migrants in Malaysia can improve their financial stability and family lives through innovations like tokotki.id, which provides access to products and financial services while enhancing users' financial management skills. This platform offers new opportunities for the migrant community to achieve financial independence and well-being.
Webinar Nasional Meningkatkan Daya Saing UMKM di Era Digital Tentang Inovasi Pertumbuhan Ekonomi Melalui E-commerce
Authors: M Arief Rahman  , Kusmayanti  , Hary Jocom
Published: November 2024

MSMEs in Indonesia face significant challenges in improving competitiveness in the digital era. To address this issue, a national webinar was held with the aim of discussing economic growth innovation through e-commerce. The implementation of this webinar used a qualitative approach method, starting with the identification of MSME needs and continued with training covering digital marketing strategies and online store management. The webinar involved participants from various regions who were active in discussion sessions and hands-on practice. Evaluation showed that participants experienced an increase in knowledge and skills in e-commerce, allowing them to compete more effectively in the global market.
Kemandirian dan Ketahanan Finansial Pesantren Berbasis Organisasi Koperasi Sarekat Bisnis Pesantren (KSBP)
Authors: Mujibno
Published: November 2024

Islamic Boarding School has enormous potential to form a good financial resilience and independence, One of the organizations that until now has been concerned in helping the economic growth of the independence and financial resilience of a Islamic Boarding School is the Sarekat islamic Boarding School business cooperative organization. The Islamic Boarding School Business Sarekat organization has proven to be very influential on the financial independence and resilience of Islamic Boarding School, it's just that there are still very few islamic Boarding School that are members of the organization. so this research is important to do to explain the process of pesantren financial resilience and independence based on the Islamic Boarding School Business Sarekat Cooperative Organization.
      This study used a qualitative approach with a type of field research. The qualitative field approach was used in this study to explain the financial independence and resilience of pesantren through the Islamic Boarding School Sarekat Business Cooperative. Data  collection procedures were obtained from interviews, documentation and observation. And for data analysis is done with three stages, data reduction, data display and conclusion making.
The results of this study explain that in forming the resilience and financial independence of islamic Boarding School, KSBP conducts sales of superior products between islamic Boarding School that are members of KSBP. In addition, in 2020 KSBP built a Distribution Center (DC) Building. Internal inhibiting factors include; there are still primary cooperatives that do not conduct RATs, the existence of the same products between KSBP members, long distribution distances between KSBP members, and loyalty in the use of goods between KSBP members. As for the inhibiting factors from the externya come from competitors outside KSBP and natural disasters that occur. KSBP's supporting factors also come from internal and external factors, KSBP's internal supporting factors come from the positive support of KSBP members, while external factors come from Indonesian Bank and the Ministry of Cooperatives.
ВАЖНОСТЬ ФОРМИРОВАНИЯ МИКРОБИОТЫ С ПЕРВЫХ 1000 ДНЕЙ РЕБЁНКА
Authors: С.А. Протасова , О.К. Головко , А.Н. Колесников
Published: November 2024

Формирование микробиоты у новорождённых детей представляет собой важный аспект, который оказывает значительное влияние на развитие иммунной системы и общее здоровье. В данной исследовательской работе рассматривается значимость первоначального заселения организма ребёнка полезными бактериями, которое начинается с момента его рождения и определяется условиями родоразрешения, а также последующим питанием, в частности, грудным вскармливанием. Понимание роли микробиоты и факторов, способствующих её формированию, является актуальной задачей современной медицины и общества в целом
CATALYTIC REFINING OF HEAVY OIL RESIDUES FOR THE PRODUCTION OF NON-OXIDIZED BITUMEN FOR ROAD USE
Authors:   Kazan Federal University, ALMOHAMAD А.М. , KEMALOV R.А. , KEMALOV A.F. ,   Kazan Federal University
Published: November 2024

This article discusses technologies for the production of non-oxidized bitumen for road use from heavy petroleum residual raw materials by catalytic refining, which concludes that a number of components are added to the heavy petroleum residue, forming a catalytic complex, with the addition of which the resulting bitumen has a number of significantly improved physicochemical properties, compared with traditionally produced oxidized bitumen. Within the framework of this study, the synthesis of multifunctional catalytic complexes (CC) with high structure-forming, plasticizing and, last but not least, adhesive properties in bitumen matrices was carried out due to the cluster effect during the physicochemical interaction of components and bitumen on any types of substrates in various application conditions. The results showed that the non-oxidized bitumen obtained with the addition of 2% by weight. The catalytic complex corresponds to the grade of bitumen BND 70/100, which meets the requirements of GOST 33133-2014. The developed non-oxidized bitumen differs from traditional oxidized bitumen by a high softening temperature of 58.7 °C with a stretchability of 77.6 cm at 25 °C. It should be particularly noted that the process of obtaining non-oxidized bitumen by catalytic refining is superior to traditional methods of obtaining bitumen binders, in that less energy-consuming technological operations are used, for example, the reaction temperature proceeds at 190-230 ° C and the time is about 180-210 minutes. At the same time, the resulting non-oxidized bitumen has resistance to aging, preservation of plasticity at low temperatures and high adhesion to stone materials. Thus, as a result of the conducted research, it can be concluded that the method of catalytic refining of heavy oil residue is one of the most promising ways to obtain high-quality bitumen for road use with improved physicochemical properties, aging resistance.
THE INFLUENCE OF HYPERBRANCHED POLYMERS ON VISCOSITY VALUES FOR PIPELINE PUMPING OF LIQUID HYDROCARBONS
Authors:   Kazan National Research Technological University, KHARITONOV E.V. , ANTONOVA K.YU. , SHARIFULLIN A.V. , BAYBEKOVA L.R. , YURCHENKO YA.A. , MINNAKHMETOV F.F. ,   Kazan National Research Technological University, GAFUROV N.R. ,   Almetyevsk State Petroleum Institute, DUSMETOVA G.I. ,   JSC «M. Auezov South Kazakhstan State University»
Published: November 2024

The article presents the results of studies of the industrial hyperbranched polymer Boltorn W300 on the values of the dynamic viscosity of oil from Yakut fields in various concentrations and in different temperature ranges from 5 to 25 ° C in increments of 5 ° C, which can positively influence the processes of pipeline transportation of oils in conditions of complex rheological parameters of pipeline operation networks. A preliminary analysis of oil for physical and chemical properties was carried out and the rheological characteristics of the base oil were studied. It has been established that, according to the results of structural group analysis, the chemical composition of the oil is paraffinic. Using a rotational viscometer, the dynamic viscosity of the shear rate of an oil system containing an additive component in concentrations of 10, 30, 50, 80 and 100 ppm. It was revealed that the effectiveness of the hyperbranched polymer Boltorn W300 is observed only at low temperatures (below 10 0C); an increase in the effectiveness of the hyperbranched polymer Boltorn W300 from an increase in the concentration of the polymer additive in the oil system was also revealed. The most effective additive concentration in this study is 100 ppm, where the viscosity index is reduced by 40,7 %. The greatest effectiveness of the hyperbranched polymer Boltorn W300 in reducing dynamic viscosity and improving rheological properties is observed in the region of low shear rates - up to 3 s-1, which can be preliminarily assessed as a positive quality for use on pipelines for pumping oil media during the pipeline commissioning period, at which low shear rates are observed. shear rates and low oil flow rates.
PRODUCTION, PROPERTIES AND APPLICATION OF POLYURETHANES MODIFIED WITH VEGETABLE ADDITIVES (REVIEW)
Authors:   Ural State Forest Engineering University, SHKURO A.E. , PROTAZANOV A.A. , PERVOVA I.G. , GORBATENKO YU.A. , SAVENKO G.R. ,   Ural State Forest Engineering University
Published: November 2024

This review discusses the synthesis, properties and applications of polyurethanes. Polyurethanes are materials that combine high hardness and stiffness with the flexibility of rubber, making them versatile and multifunctional materials. The article describes in detail the process of synthesis of various types of polyurethane compositions from polyols and isocyanates, as well as their basic physicochemical properties. Special attention is paid to the diverse applications of polyurethanes, including the automotive, biomedical, coatings, adhesives and sealants industries. The relevance of the study and development of this material is due to its high service life and economic efficiency. The purpose of this work is to compare the advantages of obtaining and the possibilities of using polyurethanes in various industries, as well as their impact on technological processes and the environment. The ability to modify polyurethanes allows manufacturers to create materials with a variety of properties and adapt them to different types. Progress in the use of polyurethanes is clearly manifested in the use of biocompatible polyols. The article presents the advantages and disadvantages of using various types of polyols in the production of PU. The latest achievements and trends in the use of polyurethanes, including the use of biocompatible polyols and nanomaterials, are reviewed. Possessing excellent mechanical strength, biodegradability and biocompatibility, PUs are widely used in various medical fields. Thus, PU is included in nanotubes, catheters and bactericidal wound dressings. The use of renewable resources of plant origin as PU components makes it possible to create new environmentally friendly polymer building materials. Analysis of the relevance of the use of polyurethanes allows us to better understand their prospects and opportunities for further development of the industry.
ASSESSMENT OF POSSIBLE RISK SITUATIONS DURING THE IMPLEMENTATION OF RECULTIVATION ACTIVITIES
Authors:   UkuLab Ltd, ZABOLOTINA A.S. , SHABALINA V.P. ,   Kazan State Power Engineering University, ISMAILOVA R.N. , SOLOV'EV V.I. ,   UkuLab Ltd, GORYUNOVA S.M. ,   Kazan National Research Technological University
Published: November 2024

The problem of recultivation of lands of unauthorised dumps of solid domestic wastes (solid municipal wastes) for further construction on these territories of various objects of industrial and residential nature, as well as their possible use in agriculture today is extremely urgent. The article deals with possible emergency situations during the recultivation of unauthorised dumps near Vologda, describes the causes and consequences of their occurrence, and provides a qualitative assessment of their potential impact on the environment. This information was based on the information on the natural characteristics of the territory, the current state of the natural environment and the characteristics of the projected object (source of impact), as well as the results of technical reports of engineering surveys. The assessment criteria were taken as criteria for assessment of atmospheric air and water pollution, since atmospheric air is in contact with all environmental objects: soil, surface water. The research tool is FMEA methodology. It is shown that the situation related to fire at the facility is the most critical. A number of measures are proposed to reduce the probability of occurrence of this situation.
THE EFFECT OF OXYGEN-CONTAINING COMPOUNDS ON THE BASIC OPERATION PROPERTIES OF DIESEL FRACTIONS
Authors:   Kazan National Research Technological University, KUZNETSOV D.A. , SHARIFULLIN A.V. , IBRAGIMOVA D.A. ,   Kazan National Research Technological University
Published: November 2024

A complex analysis of the latest world research has revealed the tendency of using oxygen-containing compounds as promoters of the fuel combustion process capable to reduce harmful emissions, to identify the need of improving the environmental properties of diesel fuels associated with stricter quality requirements. Due to the significant growth of the diesel car park both in the world and in Russia in particular, the increase in emissions of nitrogen oxides has become an urgent problem and an important task is to find ways to solve it. The following research objects were selected for experiments: straight-run oil fractions with boiling points 180-240°C and 240-290°C. As oxygen-containing additives, it was proposed to inject the following oxygenates belonging to different classes of compounds: isopropyl alcohol, ethylcarbitol, methyl carbonate. The concentration of the oxygenate additive varied in the ratio from 1 to 5% in order to find the optimal balance between the cost-effectiveness and effectiveness of its action. Mixtures of diesel fractions with oxygen-containing additives in various concentrations have been studied in order to improve operational and environmental characteristics: kinematic viscosity, flash point in a closed crucible and low-temperature properties such as: freezing point, turbidity point and limit filterability point of diesel fuel have been measured. It was revealed that the oxygen atom in the composition of the oxygenate groups of the introduced additives made it possible to produce a more complete combustion of fuel, respectively, to reduce the amount of harmful emissions in the form of unburned hydrocarbons into the environment. Indirectly, it was possible to show that oxygenate mixtures with diesel fractions contributed to reduce emissions, thereby increasing the environmental performance of exhaust gases. The optimal ones are proposed.
COMPLIANCE ASSESSMENT OF DRILLING REAGENTS SUPPLIED FROM NORTHERN REGIONS OF CHINA
Authors:   Institute for Demographic Research - Branch of the Federal Center of Theoretical and Applied Sociology of the Russian Academy of Sciences, LESTEV A.E.
Published: November 2024

The article presents the results of conformity assessment of reagents for oil well drilling, produced and supplied to Russia from China. The current state of Russian-Chinese co-operation in the field of supply of oilfield chemicals and reagents for drilling oil and gas wells is presented. It is shown that the import of xanthan gum and guar gum is necessary and alternative-free due to the lack of raw materials for the production of these types of drilling reagents in Russia. The relevance of the study is due to the current situation of sanctions pressure and trade and economic blockade by Western countries, which gives cooperation with China in various industrial areas a strategic nature. After the withdrawal of Western companies it was China that replaced huge volumes of chemical reagents for oil production, in this connection it is necessary to control Chinese chemistry in terms of efficiency and safety of application at oil and gas production facilities. The methods of viscometry, gravimetry, sieve analysis were used in this work. Two samples of xanthan resin and one sample of low viscosity polyanionic cellulose were tested. As a result of the tests it was shown that the quality of Chinese-made drilling reagents meets the requirements of Russian and international standards. In addition, new technical possibilities for viscosity determination on the rotational viscometer have been revealed, which consist in the possibility of using a rotational viscometer equipped with a torsion spring f1, instead of a rotational viscometer equipped with a torsion spring f0.2, specified in the international standard ISO 13500. The work also shows the unlikelihood of organochlorine compounds in the composition of polyanionic cellulose and xanthan gum.
A MESOSCALE FACILITY TO ASSESS THE EFFECTIVENESS OF DISPERSANTS USED IN OIL SPILL RESPONSE OPERATIONS
Authors:   Kazan National Research Technological University, YULDASHEV R.I. , FATKULLINA D.I. , BASHKIRTSEVA N.YU. , KURYASHOV D.A. , MINGAZOV R.R. , LATYPOVA E.A. ,   Kazan National Research Technological University
Published: November 2024

Spillage of oil or petroleum products into marine and inland waters has severe environmental consequences for the ecosystem of the region where the spill occurred. To minimize the consequences of such accidents, various methods of elimination can be used: mechanical, physico-chemical, thermal, biological. The expediency of using a particular method is determined based on the liquidation plan, and is individual for each specific spill. The right combination of methods is a key factor that guarantees complete elimination of the undesirable consequences of an accident. This article discusses the method of chemical dispersion as one of the ways to eliminate accidental oil spills in marine areas. The question of the complexity of evaluating the effectiveness of dispersing compositions is raised. An argumentation of the disadvantages of existing methods of analysis is given. As an example of solving the described problem, an example of using a mesoscale installation simulating oil spill conditions is given. Its main technical characteristics and method of operation are published. The components of the installation and auxiliary components are also described in detail. As an example of operation at the installation, the results of an experiment to evaluate the effectiveness of two dispersing compositions depending on the thickness of the oil pollution film, which cannot be obtained using laboratory testing methods, are presented. Hence, it can be concluded that tests on a mesoscale installation can be the main tool in developing an oil spill response plan. In addition, they can be used to evaluate the dispersing properties of formulations and individual surfactants under conditions as close as possible to real ones.
CHEMICAL TECHNOLOGY: KEY CONCEPTS AND PRINCIPLES OF SYSTEMATIC STUDY
Authors:   Kazan National Research Technological University, KURASHOV V.I.
Published: November 2024

Chemical engineering is a multi-dimensional system, complicating in the historical process of development and disciplinary branching of natural science and engineering and technological developments. Technology itself, as “logic,” is an immaterial system, or theory of practice, and in material realization - socially significant practice of obtaining useful products. Among the products of technology, the largest area is a set of material values: a variety of materials., machines and mechanisms, drugs, fertilizer, research tools. There are many principles of classification of components, as a technology in general and chemical technology. Chemical technology in the theoretical and practical fields is not autonomous - it is always integrated with many fields of natural science and technology: metallurgy, pharmacy, biotechnology, nanotechnology and in various forms in the field of solving environmental problems of the functioning of industrial production and human activity in general. The analysis of the problem gives grounds for the allocation of three levels of study of the phenomenon of “chemical technology”: 1) institutional (educational and research institutions); 2) subject (directions of activity of laboratories, department of higher education, engineering and technological centers); 3) personal (individual areas of professional activity of representatives of the technological community). In addition to this, chemical technology should be studied on the basis of identifying: 1) factors of its dynamics; 2) areas of improvement; 3) perspective areas of development. In addition, important results are given by the individual knowledge and orientation of experienced professional technologists in determining the concept of "chemical technology", its essence and perspective directions. The set of proposed approaches allows us to identify the main structural components of modern chemical technology and the most promising areas of its development.
ELECTROCHEMICAL ALLOYING OF ZINC COATINGS WITH CHROMIUM AND COBALT FROM ELECTROLYTES CONTAINING HETERONUCLEAR COMPLEXES
Authors:   Kazan National Research Technological University, BEREZIN N.B. , MEZHEVICH ZH.V. ,   Kazan National Research Technological University
Published: November 2024

The purpose of this work is the electrochemical alloying of zinc coatings with chromium and cobalt from glycine-containing electrolytes containing heteronuclear complexes. Currently, the development of electroplating is mainly aimed at creating environmentally safer industries. In solving these problems, low-waste technological processes with closed water circulation are introduced into industry, toxic substances are excluded from technological operations, and work is underway to reduce water consumption.An important area of work, in our opinion, is the production of alloyed coatings with effective performance characteristics. Obtaining such coatings allows the use of smaller thicknesses and longer service life, which helps to save material and energy resources, and in some cases solve environmental problems when replacing toxic metals, for example, cadmium. The processes of complexation in the zinc (II)-chromium (III)-cobalt (II) - glycine -water system were studied using NMR.The kinetics of the cathode process on zinc and steel electrodes has been studied by removing potentiodynamic polarization curves. It is suggested that the absence of characteristic current peaks on the polarization curves is due to the convergence of the electrode potentials of individual metal ions recovering from heteronuclear compounds, as well as the concomitant hydrogen release reaction.X-ray fluorescence analysis showed that in the studied current density range of 0.5-3.0 A/dm2, the content of alloying metals varies 0.01…2.00 for chromium and 0.1…3.6 for cobalt, respectively. The mass corrosion index for coatings alloyed with chromium and cobalt (cobalt content up to 1%) is 2 times less than for zinc coatings and is 0.05 g/m2·h.
SURFACE-ACTIVE PROPERTIES OF ALKANOLAMIDES
Authors:   Kazan National Research Technological University, LUTFULLINA G.G.
Published: November 2024

The indicators of the wetting ability of surfaces with aqueous solutions of the studied alkanolamides based on distilled fatty acids of rapeseed (DKRMA) and sunflower (DKPMA) oils were studied and monoethanolamide. The sizes of surfactant components were diagnosed using high-precision instruments: a DataPhysics DCAT 21 tensiometer and a 90Plus/BI-MAS particle size analyzer. The contact angles of wetting of glass (hydrophilic) and paraffin (hydrophobic) surfaces with DCPMA solutions at concentrations above the critical micelle concentration (CMC) (1.5-2.0 g/dm3) reached values of 33.0-34.0º. For DKRMA, the contact angles were 34.0-35.0º for the glass surface and 36.0-37.0º for the paraffin surface. It was found that before CMC (at a surfactant concentration of 0.5-1.0 g/dm3), the hydrodynamic radii of the components are in the range of 120.7 - 121.1 nm. Outside the CMC, the hydrodynamic radii of particles of surfactant micelles reach values of 221.3 - 221.6 nm. It was revealed that the synthesized alkanolamides belonged to the category of monodisperse systems according to the fractional composition of the particles of the dispersed phase. The latter is regulated by the uniformity of dispersed particle sizes. The latter is regulated by the uniformity of dispersed particle sizes. Depending on the average size of dispersed particles, the surfactants under study are highly dispersed systems (divided by particle size of the dispersed phase). The surfactants under study are highly dispersed systems, in accordance with the classification by particle size of the dispersed phase depending on the average size of the dispersed particles. It has been proven that the products take an intermediate position between nano- and microparticles. The cloud point temperature (81-83ºС) was measured and the hydrophilic-lipophilic balance (HLB) (11.8-11.9) of the surfactants under study was calculated. The obtained HLB values mean that alkanolamides belong to the group of “oil in water” emulsions. The pH of aqueous solutions of surfactants at a concentration of 10.0 g/dm3 was 7-8. Neonol AF 9-12 was used as a control surfactant.
PERVAPORATION SEPARATION OF WATER-ALCOHOL MIXTURES ON POLYURETHANE MEMBRANES BASED ON AMINO ESTERS OF BORIC AND ORTHOPHOSPHORIC ACIDS: EXPERIMENT AND MODELLING
Authors:   Kazan National Research Technological University, LATYPOV D.R. , KLINOV A.V. , FAZLYEV A.R. ,   Kazan National Research Technological University
Published: November 2024

In this work, the separation characteristics of a selective layer of pervaporation membranes made of polyurethanes based on amino esters of orthophosphoric acid (AEPA) and amino esters of boric acid (AEBA) were studied during the dehydration of azeotropic water-alcohol mixtures. Polymer compositions of polyurethanes based on various compositions of AEPA and AEBA were studied in order to identify the best options. For polyurethane based on AEPA, moles of orthophosphoric acid influenced the composition of the polymer composition; for polyurethane based on AEBA, the effect of modifiers (bulk adducts of diphenylolpropane diglycidyl ether and copper chloride) was measured. A technology has been developed for the production of polymer pervaporation membranes with a selective layer of restrictive polyurethanes. Experimental studies on the pervaporation dehydration of isopropanol/water and ethanol/water mixtures in various alcohol concentrations (50-99 wt%) and various feedstock temperatures are presented. Obtains permeate flux and separation factor results for membrane confinement when separating confinement mixtures. It has been determined that an increase in the moles of orthophosphoric acid in the composition of the polymer composition AEPA and the use of modifiers in the synthesis of the polymer composition AEBA improve the separation characteristics of pervaporation membranes. It was revealed that when the process temperature increases by 20 °C, the permeate flow through the membrane increases, for example, for polyurethane based on AEPA-5-PEG, the value increases by 2 times, with a practically unchanged separation coefficient. Based on the pervaporation separation index data, promising polymer compositions were selected. The results of the data obtained are compared with the studies of other authors; the membranes we use have high values of permeate flux and separation coefficient, which are consistent with the values for any membranes from the open literature. Based on the concept of dissolution-diffusion, the process of pervaporation of isopropanol/water and ethanol/water mixtures through polymer membranes was simulated. The given calculation system is cyclic, and the results of calculating the permeate flow and separation coefficient using this model are in good agreement with the experimental data obtained.
DROPLET DYNAMICS IN ROTATING LAYER OF SEPARATOR WITH TANGENT SWIRLER
Authors:   Kazan National Research Technological University, KHARKOV V.V. , DMITRIEVA O.S. , NIKOLAEV A.N. ,   Kazan National Research Technological University
Published: November 2024

The intensification of heat and mass transfer is associated with the swirling of the flow using swirlers and the influence of separation layers near it; therefore, a strong dependence of the intensification process on the peculiarities of the movement of droplets in a rotating layer inside the device is obvious. The efficiency of the two-phase flow separation process is determined by the design of the separator used, as well as the fluid dynamics of the interacting flows, therefore, there is a need for a deeper understanding of the physical mechanisms developing in such complex flow fields. The design and principle of operation of a separation device with a tangent swirler are considered. To determine the main parameters of the layer, a computation of the movement of liquid droplets separated from the blades of the swirler was performed. The analysis of the forces acting on the droplet is carried out. The results of the calculation of the trajectories of droplets based on the inlet velocity of the gas and their diameter are presented. The total residence time of the droplet in the contact zone with the swirler blades is very significant and, by an order of magnitude, exceeds the separation time of a drop of sprayed liquid of equal diameter. The dependences determining the time of the droplet flight, the departure of the droplet into the separation zone, the height of the droplet separation, the number of interactions of the droplet with the blades, and the residence time of the droplet in the rotating layer are presented. Numerical calculations have shown that when the dispersed phase moves in the rotating layer, the number of droplet impacts on the blades of a tangent swirler increases with decreasing droplet diameter and gas flow velocity. The results obtained allow us to quantify the refresh rates of the surface of the interphase contact in the separation device with the tangent swirler.
TECHNOLOGY OF ZINC SULFATE MONOHYDRATE PRODUCTION
Authors:   Kazan National Research Technological University, ERMUKHANOVA S.T. , KHATSRINOV A.I. , SULEYMANOVA A.Z. , VODOP'YANOVA S.V. ,   Kazan National Research Technological University
Published: November 2024

The article presents the results of studies on the production of zinc sulfate monohydrate. Zinc sulfate hydrates are chemical compounds used in various industries. They are used in agriculture to increase yields, as well as in the production of paints, medicines, beer and other products. The main element is zinc, which contributes to the active growth and development of plants. Powders, zinc oxide production waste with zinc content from 75 to 99% and 25% sulfuric acid were used as study objects. The content of basic elements was determined by ICP spectroscopy. Based on the data obtained, a production scheme was developed, including the following stages: preliminary preparation of components, chemical interaction, purification of the resulting zinc sulfate solution, evaporation of the solution, drying. Zinc-containing raw materials must be crushed beforehand. In order to increase the rate of interaction between the components, the zinc-containing powders are premixed with water. The amount of concentrated sulfuric acid injected is adjusted so that a 25% solution is formed after dilution with water. During the reaction of the interaction of the components at temperatures above 70°C, strong foaming is observed, indicating the presence of metallic zinc (Zn) in addition to ZnO particles. Hydrogen peroxide can be used to purify zinc sulfate solution from impurities of iron, copper, cadmium and nickel. Evaporation is carried out with periodic stirring for 1-2 hours, at a temperature of 70 to 90°C. The filtered zinc sulfate monohydrate precipitate is dried at 105°C to constant weight. The zinc sulfate monohydrate powder obtained according to the developed scheme can be further used as a fertilizer or feed additive.
MODIFICATION OF ETHYLENE PROPYLENE DIENE RUBBER-BASED RUBBES WITH SILOXANE RUBBER
Authors:   Kazan National Research Technological University, ZIMINA A.S. , KHAKIMULLIN YU.N. , MIRONOVA YU.E. ,   Kazan National Research Technological University
Published: November 2024

Rubbers based on ethylene propylene diene rubber are widely used in the cable industry due to the possibility of using such rubbers in extreme conditions. However, such rubbers have limitations in heat resistance. To increase the heat resistance of such rubbers, it is possible to combine ethylene propylene diene with other rubbers. At the same time, it must be taken into account that the rubbers must be compatible with each other. To increase the heat resistance of rubbers based on ethylene propylene diene rubber, it is possible to introduce silicone rubber into the composition. Owing to the unique character of the main chain consisting of alternating atoms of silicon and oxygen, siloxane rubber-based rubbers have increased thermal and fire resistance, which makes them widely used for the production of items operating in high-temperature conditions. Ethylene propylene diene and silicone rubbers can be vulcanized with a common agent - organic peroxide. There are known works on improvement of frost resistance of rubbers based on ethylene propylene diene rubber by combining it with methylphenylsiloxane rubber. In this work the influence of SKTV-1 rubber content up to 50% wt. % on the properties of rubber based on EPDM is investigated. Vulcanization characteristics, physical and mechanical properties of rubbers before and after thermal aging, and electrical insulating properties were assessed. Thermal aging of rubber was carried out at temperatures of 130, 150 and 180 °C. It has been established that with a ratio of EPDM/SKTV rubbers of 90/10, it is possible to increase the heat-resistant properties of rubbers. For better combination of rubbers, a plasticizer based on siloxane rubber destructor was introduced in an amount of 5 parts by weight. The plasticizer makes it possible to increase the compatibility of rubbers and does not negatively affect the entire range of properties.
The Impact of Entrepreneurship Education through Active Learning and the Learning Office Program on Entrepreneurial Development: The Mediating Role of Entrepreneurial Attitudes and Intentions
Authors: Ameri Mohammad Kazim , Mohammadi Abdulrahim , Halimi Mohammad Zaher , Akbari Mohammad Hadi , Mohammadi Abeda
Published: November 2024

This study investigates the impact of entrepreneurship education (EE) through Active Learning (AL) and the Learning Office Program (LO) on entrepreneurial development, employing the Theory of Planned Behavior (TPB) as a theoretical framework. TPB emphasizes the importance of assessing intentions to initiate new ventures, focusing on attitudes, subjective norms, and perceived behavioral control.
The research targeted students and graduates of the Institute of Administration and Accounting in Kabul, which is part of the technical and vocational education and training (TVET) system. A quantitative design was utilized, surveying 412 participants through established scales and stratified random sampling. The data were analyzed using structural equation modeling (SEM).
The findings underscore the critical role of entrepreneurship education (EE) in fostering positive entrepreneurial attitudes and intentions, with the Learning Office Program (LO) significantly influencing these constructs. In contrast, the absence of a significant relationship between Active Learning (AL) and entrepreneurial attitudes (EA) indicates that while AL may enhance entrepreneurial skills, its direct impact on attitudes is less pronounced, highlighting the need for further research into effective active learning techniques. Ultimately, the study reinforces that EE, particularly through structured programs like LO, effectively enhances entrepreneurial outcomes and offers valuable insights for policymakers and educators. The positive effects of entrepreneurship education are further amplified by the mediating roles of entrepreneurial attitudes and intentions, emphasizing the necessity of a supportive environment for aspiring entrepreneurs, especially in developing countries grappling with youth unemployment.
Real-Time Data Pipelines for Feature Stores in Gaming
Authors: Gupta Robin
Published: November 2024

Machine learning models are used in content creation and generate real-time observations in gaming with a positive effect on both performance and production processes. However, the management and deployment of these features and metrics for the purposes of these benefits are critical. Looking at feature and metric stores data structures that are used for storing and retrieving feature and metric data for machine learning models. Feature stores are responsible for featuring storage and delivery for model training and features needed for model’s inferencing, whereas metric stores contain metrics required for the assessment of specific models. The adoption of these stores can drastically bring down the amount of development time and effort as well as enhance the aptitude of recognizing real time actions and quality of the game. It is therefore prudent and helpful for the reader to learn the basic concepts that underpin feature and metric store, the ways in which gaming application benefits from them, and the possible ways in which this technology can be developed further in the future.
Role of Pyrimidine Derivatives in the Treatment of Cancer
Authors: Sarwade Prakash Pralhad , Srinandhinidevi K. M. , Dangwal Kiran , Maurya Chandresh , Otia Mihir , Kumar Subham , Prakash Jay , Gaisamudre (Sarwade) Kavita Narayan
Published: November 2024

The study of the chemistry of pyrimidines is contributing to the expansion of research into the therapeutic applications of these compounds. In the field of medicinal chemistry, the sheer number of pyrimidine synthesis methods and reactions that are available opens up a world of possibilities. These investigations have been inspired by the fact that pyrimidines can be used as building blocks for a wide variety of compounds that have a physiological effect. The pyrimidine ring and its fused derivatives, which include pyrazolo[3,4-d]pyrimidine, pyrido[2,3-d]pyrimidine, quinazoline, and furo[2,3-d]pyrimidine, have garnered a great deal of attention due to the extensive variety of biological potential that they possess. In addition, fused pyrimidines are considered to be bioisosteres with purines. As a consequence of this, numerous substances, such as pyrimidine and derivatives of fused pyrimidine, have demonstrated promising anticancer potential. Pyrimidine compounds have been shown to possess a number of beneficial qualities, including antibacterial, anticancer, anti-inflammatory, antidiabetic, and analgesic effects. The purpose of this study is to shed light on the anticancer significance of certain fused pyrimidine derivatives and privileged pyrimidines through the use of various types of inhibition. Additionally, the study reveals structure-activity relationships and provides specifics regarding the synthetic compounds that were utilized in the construction of these scaffolds. The hope is that this research will assist medicinal chemists in the development of highly selective pyrimidine anticancer agents. The focus of this review article is on recent research on synthetic pyrimidine compounds that have anticancer effects.  Additionally, the paper examines the chemistry and biological activities of pyrimidines.
Chronic Obstructive Pulmonary Disease (COPD): Diagnosis, Pathology, Clinical Presentation and Homoeopathic Management
Authors: Pathak Praveen Kumar , Pathak Shiwani
Published: November 2024

Chronic Obstructive Pulmonary Disease (COPD) is a very common problem worldwide now a day. COPD is preventable and treatable disease it is characterized by constant airflow limitation that is generally progressive and connected with an enhanced chronic inflammatory response in the airways and the lung to noxious particles or gases. Exacerbations and comorbidities contribute to the generally severity in individual patients of COPD. It remains a most important reason of morbidity and mortality globally and outcome in an economic and social burden that is both substantial and increasing.
Advances in Transdermal Drug Delivery: The Development of Microneedle Technology for Improved Therapeutic Outcomes
Authors: Nagrik Shivshankar M. , Akhare Vaishnavi S. , Bhade Manisha W. , Nayse Mohini R. , Gulhane Ankita G. , Bhorkhade Shreya P. , Nagrik Shatrughna U. , Verulkar Ashwini G.
Published: November 2024

Transdermal Drug Delivery Systems (TDDS) represent a significant advancement in therapeutic administration by allowing drugs to bypass the gastrointestinal system and first-pass hepatic metabolism, enhancing patient compliance, and enabling sustained drug release. However, traditional TDDS face limitations, including resistance from the skin's natural barrier and limited efficacy in delivering large or hydrophilic molecules. Microneedle (MN) technology offers a breakthrough solution, using minimally invasive micron-sized needles to bypass the stratum corneum, facilitating efficient drug delivery without significant pain or discomfort. This review explores the evolution and recent advancements in microneedle technology, highlighting its role in overcoming the limitations of conventional TDDS. Microneedles have been shown to enhance drug bioavailability, reduce side effects, and expand the range of deliverable therapeutics, including vaccines, insulin, and genetic materials. The development of bioinspired 4D microneedles further extends their application to diagnostics and cosmetic treatments, positioning MNs as a versatile tool in modern medicine. Key sections of the review focus on the types of microneedles—solid, coated, dissolving, hollow, and hydrogel-forming—and their respective fabrication methods, materials, and drug delivery mechanisms. The review also discusses the challenges related to scaling up production, ensuring consistent quality, and regulatory hurdles in achieving clinical approval. Future directions include the integration of microneedles with nanotechnology, combination therapies, and sustainable design, particularly in developing regions where biodegradable materials may address environmental and disposal concerns. The potential for microneedle technology to revolutionize transdermal drug delivery, diagnostics, and therapeutic monitoring is significant, with ongoing research paving the way for multifunctional applications that can reshape patient care and treatment modalities.
On Representation: The Greek and Roman Roots of the Idea of Character in Architecture
Authors: Delledonne Nicola
Published: November 2024

The French term caractère (character) was frequently debated during the second half of the eighteenth century and was meant to establish a relationship between the form of a building and the purpose for which it was built. Its importance was twofold: it raised the issue of the intelligibility of architectural forms beyond their beauty, and, as a consequence, it directly maintained that architecture was similar to a language, in poetry or prose, capable of conveying social, civil, and religious meanings. By emphasizing the possible parallels between architecture and literature, this article analyses some ancient texts—by the likes of Aristotle, Theophrastus, Horace, Cicero, and, of course, Vitruvius—that are at the foundation of the notion of character. This “dive into the past” has nothing to do with the will to reestablish the classical style (or classicism); quite differently, it aims to rediscover the philosophical basis of architectural theory, by means of which architecture can hopefully get back to expressing collective meanings. Some final questions connect the ancient theme of character to open contemporary issues.
Regeneration of A Historical Urban Park and Its Evaluation by the Visitors: Gençlik Park Case, Ankara
Authors: Öztürk Kurtaslan Banu , Peker Daştan Esra
Published: November 2024

Urban parks, which should be planned and managed with "economic, ecological, and social sustainability" in mind, benefit citizens' health in terms of these three components. This study assesses the social sustainability of parks using the example of "Gençlik Park". The study was conducted to investigate user perceptions of renovation work carried out after a large urban park, which contributed significantly to the capital city's identity, lost function and meaning and became a deteriorated area. The data were analysed with the SPSS 23 program, and variables were associated using the T-test and ANOVA. The users were questioned under the headings of "accessibility, comfort, appearance and aesthetics, adequacy and appropriateness of the activities in the park, safety" during the renovation work done in the park.
Pengaruh model pembelajaran problem based learning terhadap hasil belajar matematika siswa pada materi lingkaran
Authors: Atandima Yuliana Day , Nuhamara Yuliana Tamu Ina , Randjawali Erwin
Published: November 2024

Studi ini bertujuan untuk menilai dampak penggunaan metode Pembelajaran Berbasis Masalah (PBL) terhadap pencapaian akademis siswa dalam pelajaran matematika. Penelitian ini menerapkan metode pendekatan kuantitatif dengan rancangan eksperimen satu kelompok yang melibatkan pretest dan posttestPeserta dalam penelitian ini adalah siswa dari kelas VIII A SMP Katolik Padadita, terdiri dari 12 siswa laki-laki dan 13 siswa perempuan, yang mengikuti perlakuan menggunakan metode pembelajaran PBL. Instrumen pengukuran yang digunakan adalah tes tertulis yang terdiri dari lima pertanyaan esai. Analisis data menggunakan uji independent t-test menunjukkan hasil yang signifikan, menunjukkan adanya dukungan untuk hipotesis alternatif (H1) dan penolakan terhadap hipotesis nol (H0). Dengan demikian, dapat disimpulkan bahwa penerapan model pembelajaran PBL secara signifikan meningkatkan pencapaian belajar matematika siswa kelas VIII SMP Katolik Padadita, terutama pada topik materi lingkaran.