bluuebunny/crossref_metadata_2025 huggingface dataset:
Installing vehicle restraint systems on the State roads in RN Macedonia according to EN1317 standard
Authors: Petrovska Olivera , Hristoski Jovan , Petrovski Andon , Spasenovski Darko , Stoilovski Ivica
Published: April 2022

Abstract – This paper analyzes the legal regulations, analyzes the existing situation with the guardrail on the roads in relation to the degree of danger of traffic participants, and with measures for the improvement of the traffic safety were proposed. The use of this European norm and its practical application in the fastest time are essential for the state, to raise the level of traffic safety. Keywords – Traffic safety, Guardrail, Legal regulations and Standards.
Application of the МКS ЕN1317 on the roads of the Republic of North Macedonia
Authors: Ristov Riste , Ognjenovic Slobodan , Nedevska Ivana , Zafirovski Zlatko
Published: April 2022

Abstract – The paper contains a comparison of the previous standard for use of elastic guardrail with the newly applied. The comparison will identify the advantages and disadvantages of both standards regarding the type of the materials, installation, designer approach and maintenance. In addition, comparison will be conducted regarding the safety aspect via constructed test sections. Keywords – Disadvantages, Materials, Guardrail, Advantages, Comparison.
Analysis of the influence of the number of access points on the reduction of free – flow speed in Bosnia and Herzegovina
Authors: Subotić Marko , Stević Željko , Tubić Vladan
Published: April 2022

Abstract – In this paper, an extensive analysis of the number of access points on a rural road network in the territory of Bosnia and Herzegovina has been performed. The HCM methodology defines that each access point adversely affects the speed of free traffic flow. The negative impact is quantitatively shown through 19 sections of rural roads, as well as a trend of reducing traffic flow speed on each of the analyzed sections. By analyzing and synthesizing the data, the values obtained indicate that access points affect reducing free traffic flow speed in the Federation of Bosnia and Herzegovina twice more than in the Republic of Srpska. The analysis also shows the spatial distribution of accesses points on the main roads section, which has been measured on 200 m subsections. Keywords – access points, traffic flow, speed.
Ways to Improve the Quality of Asphalt Roads
Authors: Dotsenko Anatoly , Mandrovskiy Konstantin
Published: April 2022

Abstract – The system of complex monitoring of the main parameters of road-construction machines and asphaltic concrete mixture during its transportation and laying on the road surface is considered. The implementation of this trend is carried out with the help of the GLONASS satellite system, which provides not only an improvement in terms of the quality of the work performance but also contributes for increasing of productivity and also reduces the human factor on the quality of the finished road surface. Keywords – Monitoring, GLONASS, Road-construction machines, Asphaltic concrete, Quality.
Estimation of Velocities in an Urban Segment through CTM model
Authors: Arlinda Rrecaj , Vlera Alimehaj , Drita Lokaj
Published: April 2022

Abstract-Because of its close relationship to density and flow, velocity play a key role in prediction of traffic parameters with the purpose of use in real-time traffic control. In this paper is proposed a procedure of estimation of velocities through a macroscopic model that originates from LWR (Lighthill-Whitham-Richards) model called Cell Transmission Model. Beside the possibility to update the densities of cells through time step, the CTM model enables the estimation of evolution of the velocities thanks to some known models that describe these relationships. A case study in an urban segment is treated in order to estimate velocities. Validation of these velocity values is done by comparing the inter cell flows from CTM (Cell Transmission Models) model and flows as function of updates velocities. Keywords –Cell, density, inter cell flow, outflow, velocity, model hypothesis
Influence of public passenger transport reliability on users behavior
Authors: Pitka Pavle , Simeunović Milan , Savković Tatjana , Simeunović Milja , Milenković Ivana
Published: April 2022

Abstract – Unreliable functioning of public passenger transpport (PPT) system has direct influence on different aspects of passenger’s journey. Often disturbances in vehicle headway influence users in such manner that they plan their journeys accordingly (leave earlier, choose different line, transfer to another line, changes in mode of travel). This paper will analyse the influence of PPT system’s reliability on decisions and behaviour of PPT system’s users. Keywords – Public passenger transport, reliability, user’s behaviour, vehicle headway
Analysis of the railway system in the region of Serbian Banat
Authors: Stojić Gordan , Tanackov Ilija , Milinković Sanjin , Sremac Siniša
Published: April 2022

in Serbian Banat is unsatisfactory. Railway stations in Serbian Banat region transport extremely small number of passengers. The volume of railway freight transport, even in the conditions of liberalization of the railway market, is still small. Keywords – Administrative divisions, railway infrastructure, railway transport, condition, realization.
A warehouse location optimization model for emergency humanitarian logistics for Republic of North Macedonia
Authors: Hamza Sherif Emel , Cvetanovski Ile
Published: April 2022

Abstract – The increased need for effective disaster response, rises the need of creating a model for optimization the location of a warehouse for humanitarian logistics. The model presented in this paper can be used for selecting the location of a warehouse for humanitarian logistics in the Republic of North Macedonia. Keywords – Facility location, humanitarian logistics, warehouse
Development Prospects of Logistic Outsourcing in Russia
Authors: Sekerin Vladimir , Soppa Igor
Published: April 2022

Abstract – Now contract logistics and logistic outsourcing are among the perspective directions of development of transport companies. In paper it will be developed the model of development of logistic outsourcing, it will be proved that main objectives of cooperation of trading and production companies with logistic intermediaries is obtaining competitive advantages. Keywords – Logistic outsourcing, Transport logistics, Transport and logistic service, Complex logistics service.
Evaluation of criteria for performing oversized transport using Fuzzy PIPRECIA method
Authors: Stević Željko , Bajgurić Melisa , Nunić Zdravko , Vasiljević Marko
Published: April 2022

Abstract – Oversized transport is an organizationally and infrastructurally demanding way of performing transport activities. It is a very important factor in an overall economic system. Since it is a mode of transport that has specific requirements in terms of organization and infrastructure, this paper evaluates the factors for its execution. The Fuzzy PIvot Pairwise RElative Criteria (Fuzzy PIPRECIA) method was used to determine the significance of ten criteria. The purpose of this paper is to analyze the necessary conditions for adequate and safe oversized transport. Keywords – oversized transport, Fuzzy PIPRECIA
Determination of the technical efficiency of the UIRR terminals using Data Envelopment Analysis method (DEA) from CCR model
Authors: Milosavljević Milan , Bundalo Zoran
Published: April 2022

Abstract – The presented paper measured the efficiency of terminals for combined transport from ten European countries members of UIRR, using DEA method. The results can be used for improving terminals operations and making key management decisions. Also, results indicate that the variable selection has a great influence on the resulting estimates of technical efficiency. Keywords – Efficiency, UIRR terminal operators, DEA
Sustainable urban mobility – modern development and perspectives
Authors: Asenov Asen , Pencheva Velizara
Published: April 2022

Abstract – An analysis of the development of urban transport systems and mobility in major cities of Bulgaria is carried out on the basis of research done on plans for sustainable urban mobility in the country. The specific conditions in the country, studies of literary sources, policies and good practices are the perspectives for developing sustainable urban mobility in Bulgaria. An integrated mobility model has been developed that will be used in an average size town, with different modes of transport and means of active mobility. Results show the prospects for the development of integrated mobility.
Economic benefits of dynamic charging of electric buses
Authors: Bartłomiejczyk Mikołaj , Połom Marcin , Jakimovska Kristina , Jarzębowicz Leszek
Published: April 2022

Abstract – Diesel engines buses are still the most used buses. Electric buses provide promising green alternatives and a lot of advantages, but the main disadvantage is their limited travel range and charging time. This article is a presentation of innovative solutions for charging of electric busses - Dynamic Charging. The modern IMC system in Solingen was presented. At the end of the article, a proposal was made to introduce a similar solution in Skopje, which would allow the operation of 9 bus lines with electric vehicles. Keywords – electric buses, trolley busses, electro mobility, dynamic charging.
Developing sustainable urban mobility policy: example from four municipalities in North Macedonia
Authors: Bunevska Talevska Jasmina , Pavleski Daniel
Published: April 2022

Abstract – Within this paper we will present general results from the process of validation of local capacities and resources to manage the process, status and existing condition of five local self-governments in terms of the activities taken and the possibilities for sustainable urban mobility planning, and our recommendations as well. Keywords – SUMP, Sustainable urban mobility, Strategic planning, Assessment, Municipality.
Security of the control of the transportation systems
Authors: Iv. Petrov Nikolay
Published: April 2022

Abstract – Traffic congestion and resulting pollution affect the quality of life in cities, notably in countries with dominant old diesel engines. One solution is Adaptive Traffic Signal Control using vehicle type and emission measurements. Therefore, a fuzzy controller using magnetic sensor for classifying vehicles and sensor for measuring emissions is proposed. Keywords – security of control, transportation systems, reliability.
Traffic noise estimating using multiple regression analysis: A case study Pristina city
Authors: Shala Ferat , Duraku Ramadan , Demolli Halil , Sejdiu Liridon
Published: April 2022

Abstract- Noise emitted by road traffic is one of the main causes that degrade the standard of the population lives in urban areas. In this paper, is developed a model for the estimating of continuous noise level (Leq) on the two-lane main urban road with medians in the city of Prishtina. Comparison of the results was done through performance indicators. It is found that independent variables have direct impact to dependent variable (Leq) and determination coefficient achieve accuracy close to 94 %. This approach could be applied for predicting traffic noise to different locations with the same category of roads through residential areas. Key words- Road urban traffic noise, Model, Multiple regression analysis.
Forecasting Number of Calls to the Call Center Using Machine Learning
Authors: Bugarčić Pavle , Janković Slađana , Mladenović Snežana
Published: April 2022

Abstract – This paper presents a forecast of a number of call arrivals in the call center per hour using supervised machine learning. For the forecast, the WEKA machine learning software tool was used. The results of the forecast are verified using several methods, which shows very good results. Finally, the results of the forecast are presented graphically using Excel diagrams. Keywords – Machine learning, Forecasting, WEKA
Review of the DataFromSkyACADEMY program
Authors: Mozga Lukas , Glazerova Petra , Fojtik Pavel
Published: April 2022

Abstract – DataFromSky ACADEMY program is educational program offered to schools, universities, educational institutions and training companies. Thanks to this program, students and teachers have access to fully automated traffic data analysis provided by DataFromSky platform that is used by traffic engineers and civil engineering companies worldwide. In past few years more and more teachers and students were asking us for the traffic data analysis for interesting study and research purposes, therefore we have decided to cooperate with institutions to make part of our software easily accessible for them as well. The goal of the program is to introduce modern way of video-analytical tools of traffic data analysis and current trends in traffic engineering. Within this paper we will introduce students and teachers and other potential users of how to access to DataFromSky Platform, and to get in touch with the software, so they know how to use it and what kind of technology is behind it. Our general aim is to spread the word about the platform and program. Keywords – DataFromSky-DFS, Academy Program, Traffic Data
Smart Parking Technologies
Authors: Simeunović Milja , Papić Zoran , Pitka Pavle , Radivojev Dejan , Saulić Nenad
Published: April 2022

Abstract –The Smart city concept involves the use of smart technologies to improve the quality of life of all residents. Traffic, as an important functioning component of all human activities, has an important role in smart city planning. Within this paper will be introduce some of the smart technologies used in the parking system. Keywords – parking, smart technologies, sensors.
Safety of Traffic Participants During Construction of Road Infrastructure Facilities
Authors: Suloodja Bulent , Manov Hristifor
Published: April 2022

Abstract – Traffic safety is one of the most important priorities in our country and in the world. Respecting and implementing on-site laws and regulations on traffic and construction, will reduce traffic accidents and accidents on construction sites. The whole point is for the activities to pass without any consequences on human life, as well as to complete the project successfully and on time. Keywords – Construction, road infrastructure, traffic safety.
One prep to catch them all: “2 in 1”, an efficient method for the simultaneous extraction of DNA and RNA from Grapevine tissues
Authors: Berger Margot M. J. , Lailheugue Vincent , Zhelyazova Gergana , Stammitti Linda , Lauvergeat Virginie , Barrieu François , Gallusci Philippe
Published: April 2022

Recent advances in our understanding of plant physiology and adaptation to the environment are tightly related to the development of ‘omics’ technologies such as metabolomics, transcriptomics, genomics and epigenomics that allow a more comprehensive view of the plant functioning. In this context, the ability to extract DNA and RNA from small amounts of plant material can be a limiting factor, worse in the case of non-model plants for which efficient nucleic extraction procedures are lacking. In the case of grapevine, extraction of high-quality DNA is typically limited by the high polyphenolic and polysaccharide contents of the different tissues. Here, we propose an adaptation of the method of Reid et al. (2006) that allows the simultaneous and efficient extraction of DNA and RNA from grapevine vegetative and berry tissues from in vitro grown grapevine plants and cells and from other plants. The protocol allows the extraction of high-quality RNA and DNA for standard molecular biology methods as well as for Next Generation Sequencing (NGS). It also works with a limited amount of plant material, such as young developing buds, and provides the means to analyse “omics” data from a single plant sample.
Search for new effective antioxidants for impregnation of commercial forms of vitamin A for the purpose of feeding farm animals
Authors: Kalenik T. K. , Senotrusova T. A. , Dobrynina E. V. , Fadi D. , Tekutyeva L. A. , Matveev V. V.
Published: April 2022

According to the Decree of the President of the Russian Federation of January 21, 2020 N 20 "On the approval of the Doctrine of food security of the Russian Federation", the basis for the formation of a national quality management system for food and agricultural products, the main goal of which is to ensure product quality as the most important component of improving health population, improving the quality of agricultural products with the help of modern innovative technologies and feed additives, promoting and stimulating the growth of demand and supply for better food products and ensuring the observance of consumer rights to purchase quality products. Achieving the goals of the Doctrine in the field of improving the quality of food and feed products is supposed to be realized with the help of some tasks, where one of them is the development of the production of food additives and ingredients in the Russian Federation, as well as the development and implementation of a quality management system for agricultural and food products and the creation of conditions for production of new generation products with specified quality characteristics. In this regard, this paper discusses the optimal and economical methods for extracting the dye from the flowers of Clitoria ternatea in order to reduce the duration of the production cycle and the introduction of low-waste technologies, which can exclude the irrational use of raw materials, lead to an increase in production, a decrease in the cost of the finished product, and an increase in economic production indicators, reducing the anthropogenic impact of production on the environment. Also, the work has developed and described a modern technology for the production of a dye, according to which it is possible to improve the quality and safety monitoring system. The prospects of using the dye from Clitoria ternatea flowers in feed additives for farm animals and birds are considered. This can undoubtedly be of interest to the business community, therefore, we can assume that the production of a natural dye from plant materials and this work is a fairly relevant subject within the framework of the Doctrine of Food Security of the Russian Federation, not only from the medico-biological, but also from the technological side.
Milk-containing products with reduced antigenicity
Authors: Melnikova E. I. , Bogdanova E. V.
Published: April 2022

Whey containing more than 50% of milk solids can be attributed to an insufficiently demanded raw material of the dairy industry. The restriction of its usage for food purposes is the high residual antigenicity of whey proteins. This work aimed to justify the possibility of using milk-containing products with whey protein hydrolysate, characterized by reduced residual antigenicity, in healthy and dietary diets. Experimental work was carried out at the All-Russian Scientific Research Institute of Dairy Industry, the Animal-Derived Food Technology department and the Core Facilities Centre "Control and Management of Energy-efficient Projects" at the FSBEI HE VSUET. Compositions were developed for a sports nutrition drink made from whey protein hydrolysate with the addition of fructose, and a milk-containing drink with the replacement of 30% skimmed milk necessary for standardization with whey protein hydrolysate. The chemical composition, physical, chemical and microbiological properties of the finished products were established. The reduction of the true protein content was proven to 1.33% for a sports nutrition drink and to 1.69% for a milk-containing drink. Peptides and proteins in the finished products have a molecular weight of less than 10 kDa, which indicates a decrease in their potential antigenicity. The developed beverages are characterized by a high content of biologically active peptides, macro- and microelements, as well as vitamins. Their quality and safety indicators meet the requirements of the TR CU 033/2013. These products can be used as part of dietary diets for people who are allergic to cow's milk proteins. The organization of their production will contribute to import substitution in the segment of low-allergenic dairy products.
The content of dietary fiber in cereal-based complementary foods
Authors: Berketova L. V.
Published: April 2022

The article presents analytical data on the content of soluble and insoluble dietary fiber in complementary foods for children from 4 months and for pregnant women. 37 samples of cereals from various manufacturers and 4 samples of porridge for pregnant women were analyzed. These products were developed on the basis of buckwheat, wheat, rice, corn and oat flour, with or without the addition of milk powder, and with or without the addition of flavoring ingredients: apple, peach, banana, apricot, quince, pumpkin. As the results of the study showed, the total content of dietary fiber (DF) in the samples under study varied greatly from 0.6% («Malych» (Istra, rice flour) up to 21.6% («Heinz, Mom's porridge», based on buckwheat flour), which depended on the quantitative composition of complementary foods and the type of flour introduced, as well as on the availability of milk and flavor fillers. In the samples of cereals of the «Malych» series, with the same percentage of bookmarks in the recipe composition of cereal flour, the total content of DF was 0.6, 1.3 and 2.25% for rice, buckwheat and oat flour, respectively. In the samples of cereals of the «Heinz» series, the total DF content was 5.4% based on corn flour, 10.0% with rice, 10.5% with wheat and 16.3% each with buckwheat and oat flour. The addition of fruit additives to the recipe leads to an increase in the DF content in the product from 13.1% («Heinz» buckwheat flour with apple) to 18.6% («Heinz» buckwheat flour with quince). In a series of Heinz porridges based on oatmeal with various flavorings, the results of the study were: without filler - the total content of DF was 16.3%; with the addition of apple - 17.9% and with the addition of apricot and apple - 19.7%. In multi-cereal porridges, the total content of dietary fiber ranged from 4.4% «Porridge of seven cereals» to 10.1% «Milk porridge of three cereals with a banana».
Comparative analysis of nutritional value and cytological toxicity of plant dispersion of Russian varieties of beans and haricot
Authors: Veber A. L. , Leonova S. A. , Nikiforova T. A. , Ziarno M. N.
Published: April 2022

Contemporary market of food of animal origin and its substitutes, i.e. dairy alternatives offers a range of non-alcohol beverages of plant origin (plant “milk”) of different level of particles’ dispersion. At Russian food market dairy alternative beverages are mostly cereal and food products by well-known brands. Application of alternative types of bean crops (green beans and haricot) in production of non-alcohol beverages of plant origin or synthetic products should be proven not only with consideration of their biological activity and their toxicity as well. The article deals with the results of comparative analysis of nutritional value and the evaluation stage of the basic toxicity of natural compositions of plant dispersion of germinated grains of bean varieties bred at Bashkir Research Institute of Agriculture and Omsk State Agrarian University in in vitro conditions. To estimate the level of toxicity and biological activity of natural compositions of plant dispersion of germinated bean grain of varieties Chishminskiy 95, Chishminskiy 229, Pamyati Khangildina, and haricot of varieties Omichka and Lukerya the most popular method for OZBlue - matter detection was used, i.e. the test on human civilized cell cultures HEK 293. It has been found out that plan dispersion of these varieties do not show the visible toxicity level in the interval of the concentrations under research, what gives a possibility to use them for targeted production.
Changes in the fatty acid composition of rapeseed and camelina oil cakes in the extrusion process and their biological effectiveness evaluation
Authors: Smolnikova Y. V. , Yanova M. A. , Bopp V. L. , Kolomeytsev A. V. , Khanipova V. A.
Published: April 2022

The problems of extrusion process influence on the fatty acid composition of products obtained from the cake of cruciferous oilseeds (rapeseed, camelina) were considered in the article. Cakes of these crops have a wide range of uses for fodder purposes, which indicates their high biological value. The aim of this study was to evaluate the biological effectiveness of rape and camelina cakes before and after the extrusion process accorfding to the calculation of the rationality coefficient of the fatty acid composition. An increase in the content of saturated fatty acids and a decrease in unsaturated fatty acids were revealed during studies after extrusion processing. A decrease in the amount of linolenic acid was also noted in the work. Its amount decreased by 2.24% in rapeseed cake and by 2.63% in camelina cake after extrusion. It was determined that the coefficient of unsaturation of oils in rapeseed and camelina cakes decreases after extrusion by 4 and 3% for rapeseed and camelina cakes, respectively. The calculation of the rationality coefficients of the fatty acid composition showed an increase in the biological efficiency of oils in rapeseed and camelina cake after extrusion. The balance of the fatty acid composition increased after extrusion by 0.07 fractions of a unit in rapeseed cake and by 0.04 fractions of a unit in camelina. The use of the extrusion method in the processing of cruciferous oilseeds makes it possible to expand the range of raw materials for the feed industry, obtain feed that is safe for feeding animals and poultry, does not reduce its quality during storage and increases the energy value of the diet, and provides opportunities for the development of food products with increased content of essential fatty acids as well.
Goat milk-based yogurt technology enriched with a mixture of aronia and hawthorn powders
Authors: Zakina M. A.
Published: April 2022

Consumption of fermented milk products containing healthy substances is an effective means of strengthening the protective functions of the human body. Development of the new product technology is based on a well-founded method of introduction of plant components forming their composition and properties. The purpose of this work is to study the method of adding a mixture of aronia and hawthorn powders, the effect on organoleptic indicators and individual physicochemical properties of yogurt. During the work, a set of generally accepted standard research methods was used. The subjects of the study are samples of yogurt produced by a thermostat method, but differing in the step of introducing an enrichment additive. Digestion was performed using a dry bacterial starter for "vivo" brand yogurt. Based on the results of the study, the stage and method of adding a plant additive to the milk mixture are selected. The optimal dose for adding aronia and hawthorn powders to the milk mixture was 5%. It has been found that the addition of the additive before fermentation leads to a deterioration in appearance and consistency (whey peel off), and when a mixture of aronia and hawthorn powders is introduced at the fermentation stage, it contributes to an improvement in organoleptic indices of goat's milk-based yogurt. According to physical and chemical indicators, the developed sample according to the proposed technology meets the requirements set by TR TS 021/2011, TR TS 033/2013 and GOST 31981.
About molecular transformations of biopolymers
Authors: Shutilin Y. F.
Published: April 2022

Almost no attention is paid to molecular processes in the body in the human sciences, the efficiency of metabolism, temperature, fatigue and relaxation, stretching and rupture of tissue cells, their healing, symptoms of diseases, etc. are discussed. about a human. This is due to insufficient training of physicians, biologists, epidemiologists, and gerontologists in the field of physical chemistry of polymers, although they are interested in a biopolymer object - a person. The basis of his body is proteins (polypeptides) and polynucleotides, DNA, their genes and turns. The paper deals with changes in biopolymers during physical and mental stress, in disease and treatment. The main forms of proteins and polynucleotides, the effect of the pH of the medium, its changes with temperature, on their sterioisometry, macromolecular structure and properties are described. The initial basis for the presented physicochemical analysis was the processes occurring during loading of muscle tissues. The transformation of proteins, DNA and genes is based on the alkalization of biopolymers with acetylcholine, which is released during muscle contraction, followed by neutralization of its action with cholinesterase to stop movement. With regular physical (and mental) overloads, genetic transformations occur and a so-called "genetic" fatigue appears (the cell genome changes). The recovery of biopolymers is carried out by lactic acid, which is formed when muscles are loaded in excess and has a prolonged effect on macromolecules. The concept of molecular transformations of biopolymers has been applied to describe human diseases and treatment, including heart attack and COVID-19. The proposed spiritual, carbon dioxide restorative actions, combined with active mental work and increased stress, can increase immunity, reduce morbidity (infection with microbes, and in the case of SARS-CoV 2, prevent the appearance of ATE 2 "traitor proteins"), as well as delay old age.
Investigation of the possibilities of extraction of titanium dioxide from primorye ilmenites
Authors: Molchanov V. P. , Medkov M. A. , Yudakov A. A. , Krysenko G. F.
Published: April 2022

Titanium is among the most demanded metals by high-tech industries. In Russia, imported raw materials are used for its production. At the same time, a new promising type of gold-ilmenite ores and placers associated with ultrabasite intrusions has been discovered in the south of the Far East. On the example of one of these objects, the Ariadne ore-placer node, the possibilities of creating the foundations of a technology for complex extraction of useful components from titanium-bearing placers using pyro-hydrometallurgy techniques are investigated. The objectives of this study were to improve the technological methods of titanium from ilmenite concentrate using ammonium sulfate. It was found that the reactions of the main components of the concentrate with (NH4)2SO4 begin when the temperature of thermal decomposition (NH4)2SO4 (3000C) is reached and proceed with the formation of a mixture of well-soluble in water double salts - ammonium sulfate and iron compositions (NH4)2Fe2 (SO4)3 and NH4Fe(SO4)2 and ammonium sulfate and titanyl composition (NH4)2TiO(SO4)2. It is shown that an increase in the interaction temperature above 3600C leads to the thermal decomposition of the formed double salts to sulfates and then oxides. The experience gained in deep processing of ilmenite mineral raw materials will help to more reasonably outline ways to develop Far Eastern complex deposits in compliance with the principles of rational nature management and environmental protection. Further research should be carried out in the direction of deepening the degree of processing of gold-titanium sands, which will reduce the cost of obtaining individual products and ensure higher production efficiency.
Selection of the evaporating agent of the partial topping tower
Authors: Fedkin V. S. , Popov S. V. , Khabibrakhmanov O. V.
Published: April 2022

The operation of the primary oil refining unit significantly affects the technical and economic indicators of the oil refinery. One of the most common options for the technological scheme of the installation provides for partial topping of oil in column K-1 with its further fractionation in the main atmospheric and vacuum columns. The separation of the gasoline fraction in the K-1 column is possible using various evaporating agents - water vapor, the reflux of the main atmospheric column, kerosene or diesel fractions. The paper evaluates the possibility of using the C1 ? C4 gas fraction obtained from delayed coking and gas fractionation units as an evaporating agent on column K-1, as well as after separating the gas-liquid flow from the top of column K-1. The studies were carried out using the Honeywell UniSim Design modeling system. To calculate the thermodynamic properties of the components of the fractions, the Peng-Robinson method was chosen. The calculations were carried out when considering two different oils as raw materials, which have significantly different contents of gas and gasoline (end boiling point 180 ° C) fractions in them. In the crude oil-1, their potential amount is 0.204 of the total volume, and in the oil-2 stream - 0.065. The operation of a typical column for partial topping of oil is simulated, containing 22 trays (contact device efficiency 0.7), feedstock is fed to 13 (the main amount of 479 t / h) and 18 trays (10 t / h) with a temperature of 232 ? and a pressure of 517.1 kPa, the pressure of the top and the bottom of the column is 280 and 294.2 kPa, respectively. The active specifications, according to which the Honeywell UniSim Design environment ensures the convergence of the calculation processes, are reflux R = 0.1 and a fixed withdrawal of distillate (17% of the potential content in oil), which is 15300 kg / h for crude oil-1 and 5000 kg / h when using raw oil-2. The flow rate of evaporating agents supplied to the bottom of the apparatus was 6000 kg / h. When calculating columns with different evaporating agents, the achieved estimates of the content in the distillate of the gasoline fraction with the end-boiling point of 180 ° C were evaluated and compared. Calculations have shown the possibility of using the C1 ? C4 gas fraction as an evaporating agent, which, in terms of its thermophysical parameters, occupies an intermediate value between the use of water vapor on the one hand and the use of a gasoline or kerosene-gas oil fraction on the other.
Evaluation of the water-holding capacity of sweeteners
Authors: Nikulina A. V. , Arkadieva A. V. , Bondareva L. P.
Published: April 2022

Water-retaining capacity is an essential property for the chemical components of food products, as it refers to one of the characteristics that determine the commercial properties of products. At the same time, there are practically no data on the hydrophilicity of sweeteners in the literature; a specific criterion for assessing this property is not given. Hydrophilicity is typically defined as a techno-functional property, i.e. it is assessed for a certain food product as a whole, when replacing the classic sweetener with another, for example, cheaper. From the literature, the isopiestic method was used to assess the hydrophilicity of isomalt in comparison with sucrose. The article is devoted to choosing a parameter that can become a universal criterion for assessing the water-retaining capacity of sweeteners. The hydrophilicity of erythritol, cyclomate, glucose, sucrose, and sorbitol has been studied by isopiestic method. The gravimetrically determined area S under the isopiestic curve was used as an analytical signal to assess the hydrophilicity of sweeteners. The correlations of S with various criteria, such as the Davis and Griffin criterions, the simplified criterion for hydrophobicity, the integral Gibbs energy, and the solubility of substances in water, for assessing the hydrophilicity (hydrophobicity) of sweeteners are considered. A correlation of the area under the isopiestic curves S only with the integral Gibbs energy from all the considered criteria was shown. The data obtained allow us to recommend the integral Gibbs energy for assessing the hydrophilicity and, consequently, the water-retaining capacity of sweeteners.
The resource potential of the enterprise as a factor of sustainable industrial development in modern economic conditions
Authors: Astafyeva O. E. , Shemyakina T. Y.
Published: April 2022

Sustainable development is a concept aimed at striking a balance between social, economic and environmental aspects and is one of the most important challenges and priorities in the modern socio-economic system. The balance between economic goals and needs (industrial growth, efficient use of resources) and environmental goals and needs (biodiversity, natural resources, ecosystem integrity) is driven by productive factors. Thus, industrial growth may conflict with the protection of natural resources, and as a result lead to incompatibility of needs. The article considers an industrial enterprise as a system that includes various business processes providing production activities and are included in the economic turnover and resources required for production purposes. Increasing resource efficiency and participation in green projects are important opportunities for economic development. The importance of promoting a significant increase in the share of industry in employment and gross domestic product in line with national objectives to modernize infrastructure and modernize industries to make them sustainable, with increased use of resources, efficient and wider adoption of clean and environmentally sound technologies in industrial processes has been identified. Increased technological capacity of industries, motivation of innovation and a significant increase in the number of personnel engaged in research and development through public and private financing has been identified as an important factor in sustainable development. Since the modern economic conditions for the running of industrial enterprises are manifested in the emergence of technological and managerial innovations in the structure of resource potential in terms of development of innovative digital technologies, the concept of developing the resource potential of an industrial enterprise is proposed, including tools for self-optimizing economic actors and self-adapting business processes to the integration of digital technologies.
Competitive positions of universities in the regional higher education market
Authors: Kapustina L. M. , Izakova N. B. , Gaiterova O. A. , Nosyreva A. N.
Published: April 2022

The current stage of higher education development is featured by a complex and dynamic environment, new threats associated with the coronavirus pandemic. These challenges dictate the need for universities to maintain firm competitive positions. Taking into account the peculiarities of the higher education and the subjective assessment of a number of factors, it is necessary to adapt the models of assessing the competitiveness of educational organizations to the specifics of the market. The purpose of the article is to modernize and test Porter's model of Five Competitive Forces for the education market system. The object of the study is the educational services market of the Sverdlovsk region. The most significant attention in the proposed model is paid to identifying and describing the features and structure of the five forces of competition. The authors propose to consider the power of internal and external consumers of university educational services as the power of customers, and the threat of online education and the creation of corporate universities of large companies as a threat from substitutes. The main attention of the authors is paid to an empirical study of the competitiveness of brands of universities in the Sverdlovsk region using the results of a survey of 177 graduates of the 11th grade of Yekaterinburg, conducted in 2020. The analysis of the applicants' motivation showed that the most important motives in choosing a university are the possibility of free education and the qualification of the teaching staff, further material benefits, such as fair wages and favorable employment. The most popular sources of information for applicants are the official website of the high school, as well as relatives, friends and acquaintances. As a result of the analysis, it is concluded that it is necessary to develop a marketing strategy to increase the competitive position, awareness and the level of public confidence of the university. The authors suggest universities to personalize relationships with students in order to increase loyalty to the university, use information technology to implement flexible programs of interaction with consumers of educational services.
Assessment of the influence of alimentary biocorrectors on the energy efficiency of the nutritional status of adolescent children
Authors: Albycheva L. A.
Published: April 2022

An assessment of the increase in the efficiency of gas exchange was carried out on the example of students of an engineering university with the daily use of an additive containing food components with known bio-correcting properties: flour of wheat germ cake Ц 45%, sprouted chickpea seeds Ц 15%, dried leaves of japanese kelp Ц 5%, a component of animal origin in the form of whey protein concentrate Ц 35%. The change in the energy efficiency of the nutritional status was assessed based on the analysis of the concentration of carbon dioxide (CO2) and oxygen (O2) in the exhaled gas mixture and the level of hemoglobin oxygenation (SpO2), the values ??of which were recorded before and after daily consumption of the test products for 30 days. The study group of patients consisted of volunteers among first-year students of the Voronezh State University of Engineering Technologies - boys and girls aged 17-18 years. In the course of experimental studies, the subjects showed an increase in the SpO2 level by 0,83% and CO2 by 4,06%, as well as a decrease in the O2 concentration by 2,62% in the exhaled gas mixture. The data obtained indicate an increase in the level of oxygenated hemoglobin in the subjects' blood, accompanied by a shift in the active blood reaction (pH) towards an alkaline medium, which occurs between the alveolar air and the blood of the pulmonary veins and capillaries due to the diffusion of CO2 through the alveolar membrane. An increase in the concentration of CO2 in exhaled air is accompanied by an increase in the efficiency of O2 transport, and also prevents the formation of erythrocyte complexes as a result of changes in the physicochemical properties of the membrane. The data obtained make it possible to state the possibility of an active alimentary effect on the efficiency of gas exchange, and prove the antihypoxant properties of the enrichment additive. The reliability of the experimental data was assessed using the Mann-Whitney test, which confirmed the presence of a positive effect of the components of the enrichment supplement on the human body. The results of the work convincingly prove the role of alimentary factors in increasing the efficiency of the most important functions of the body of adolescents of the older age group, regardless of gender, which naturally leads to an increase in the body's resistance to changes in external and internal influences. The data obtained in the course of research indicate the possibility of classifying the components of the supplement as alimentary biocorrectors that ensure the effectiveness of the process of energy metabolism of the body in adolescents.
Magnetoliposomes Containing Multicore Nanoparticles and a New Thienopyridine Antitumor Compound for Chemo/Thermotherapy
Authors: Lopes Fábio A. C. , Fernandes André V. F. , Rodrigues Juliana M. , Queiroz Maria-João R. P. , Almeida Bernardo G. , Pires Ana , Pereira André M. , Araújo João P. , Rodrigues Ana Rita O. , Castanheira Elisabete M. S. , Coutinho Paulo J. G.
Published: April 2022

Multicore magnetic nanoparticles of manganese ferrite were prepared using carboxymethyl-dextran and melamine as agglutinating agents. The nanoparticles prepared using melamine exhibit a flower-shape structure, a saturation magnetization of 6.16 emu/g and good capabilities for magnetic hyperthermia. Magnetoliposome-like structures containing the multicore nanoparticles exhibit sizes in the range 250 – 400 nm. A new antitumor thienopyridine derivative was loaded in these nanocarriers with a high encapsulation efficiency of 98% ± 2.6%. Release profiles in absence and presence of an AMF indicate a transport by diffusion, with a maximum compound release of 31% under the AMF. A sustained and controlled drug release in anticipated from the results, pointing to suitable characteristics of the magnetoliposomes for dual cancer therapy (combined magnetic hyperthermia and chemotherapy).
The Gut-Ex-vivo System (GEVS) Is a Dynamic and Versatile Tool for the Study of Dnbs-Induced IBDin BALB/c and C57BL/6 Mice
Authors: Monzani Romina , Gagliardi Mara , Clemente Nausicaa , Saverio Valentina , Pańczyszyn Elżbieta , Yissachar Nissan , Corazzari Marco
Published: April 2022

Background: IBD is a spectrum of pathologies characterized by dysregulated immune activation leading to uncontrolled response against intestinal, thus resulting in chronic gut inflammation and tissue damage. Due to its complexity, the molecular mechanisms responsible for disease onset and progression are still elusive, thus requiring intense research effort. In this context, the development of models recapitulating the etiopathology of IBD is critical.Methods: Colon from C57BL/6 or BALB/c mice were cultivated in a gut-ex-vivo system (GEVS), exposed 5h to DNBS 1,5 or 2,5 mg/ml, and the main hallmarkers of IBD were evaluated.Results: Gene expression analysis revealed a DNBS-induced: i) compromised Tight junction organization, responsible for tissue permeability dysregulation; induction of ER stress, and iii) tissue inflammation in colon of C57BL/6 mice. Moreover, the concomitant DNBS-induced apoptosis and ferroptosis pathways was evident in colon from both BALB/c and C57BL/6 mice.Conclusions: Overall, we have provided results demonstrating that GEVS is a consistent, reliable, and cost-effective system for modeling DNBS-induced IBD, useful for studying the onset and progression of human disease at the molecular level, while also reducing animal suffering.
A Predictor-Corrector Algorithm for IVPs in Frame of Generalized Fractional Operator With Mittag-Leffler Kernels
Authors: Slimane Ibrahim , Odibat Zaid , Baleanu Dumitru
Published: April 2022

This study develops a predictor-corrector algorithm for the numerical simulation of IVPs involving singular generalized fractional derivatives with Mittag-Leffler kernels. The proposed algorithm converts the considered IVP into a Volterra-type integral equation and then uses Trapezoidal rule to obtain approximate solutions. Numerical approximate solutions of some singular generalized fractional derivative with Mittag-Leffler kernels models have been presented to demonstrate the efficiency and accuracy of the proposed algorithm. The algorithm describes the influence of the fractional derivative parameters on the dynamics of the studied models. The suggested method is expected to be effectively employed in the field of simulating generalized fractional derivative models