bluuebunny/crossref_metadata_2025 huggingface dataset:
Estimation of the parameters of the immersion of reagent particles with gas into the melt during injection out-of-furnace desulfurization of cast iron
Authors:   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Yelisieiev V. I. , Manachyn I. O. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Shevchenko A. P. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Shevchenko S. A. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine
Published: May 2023

The aim of the work is to develop a mathematical model for estimating the immersion of reagent particles with gas in molten iron during desulfurization. The technologies of out-of-furnace injection ladle desulfurization of cast iron are based on the introduction of reagent particles into liquid cast iron with the help of high-speed gas jets. The patterns of behavior and interactions of two-phase jets (carrying gas+reagent) with cast iron melt are complex, as the individual dynamic characteristics of individual particles are lost. Also important is the question of the ratio of the number of particles that went deep into the metal and the particles that ended up in the floating bubble. In the work, a number of experimental studies were performed to evaluate the factors and parameters of the immersion of the reagent particle during ladle desulfurization of cast iron. Experiments have shown that the depth of immersion of a reagent particle with a radius of 0.5 mm in the presence of a cavern depends on the velocity of the particle. For an initial speed of 20 m/s, the length of the cavern is about 6 gauges, and for a speed of 140 m/s - about 10 gauges. However, as it follows from the calculations, the velocities of the reactant particles drop rapidly, which should lead to a change in the flow structure and the emergence of caverns. In this case, capillary forces will play a significant role in the penetration of the reagent into the melt. In the developed model, they are taken into account as an additional factor. It is shown that these effects have a rather weak character compared to the repulsive force of Archimedes.
Generic concept of typing of the set and constructive features of the vaults for reflective types furnaces
Authors:   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Yushkevych P. O.
Published: May 2023

Reflective types furnace: Martin furnace; Siemens–Martin furnace (double-bath unit for steel making), still have taking an important place among the total quantity of all industrial steel-smelting units in Ukraine. Due to the fact that they are cane to correctly work in the raw material base that is currently available for domestic metallurgical enterprises. The рrocessing done of information, data and literature made it possible to confirm that in the production of steel, the generic term of one company for the operation on the reflective furnaces, under other normal conditions, is determined by the using term of the refractory lining. Due to the fact that, it is very difficult to carry out hot repair work at the during the operation of the furnaces and capital works are almost impossible. According to the evidence of a number of scientific works and industrial experience of recent years, of all the main structural elements of the furnace protected by refractory lining materials, most often, the vault itself limits the overall operational resource of one use refractory lining cicle. At the work achieved the purposed and formed a general concept of typification the structure and structural features of the vaults on the reflective types furnaces, which were used in recent years in the working conditions of Ukrainian metallurgical enterprises, and to characterizeted of the main types materials, for their refractory lining. Defined the factors that significantly affect the stability of the vault of reflective types furnaces and limit the operational resource of their lining. It was established that due to a series of imperfections, it is advisable to: creation and use of more advanced modern refractory lining materials for vaults; the development of new structures or the modernization of the existing vaults for furnaces the reflective type, which will contribute to the improvement of their explantation conditions, increase the resource of refractory lining use, and improve the environmental indicators of the process.
Analysis of the efficiency of blanket cutting methods in the production of small rolled rods in rods
Authors:   Ukrainian State University of Science and Technologies, Kuzmenko M. Yu. , Egorov O. P. ,   Ukrainian State University of Science and Technologies, Rybalchenko M. O. ,   Ukrainian State University of Science and Technologies
Published: May 2023

The purpose of the work is to analyze the effectiveness of methods of cutting blanks on continuous blanking machines (CBMs) in the production of graded rolled metal in rods. Practically 100% of the orders for small-grade rolled products in rods are measured products, while the actual output of measured products from the rolling mill is 95-98%, and the rest is non-measured products. At the final stage of rolled production, metal losses also occur due to excessive technological cutting during the cutting of rolled products. There are economic losses associated with the sale of bundles of irregular rods at a lower cost. The analysis of numerous studies and scientific publications made it possible to formulate the task of inventing such cutting strategies and algorithms that ensure the minimization of finished rolled products due to the coordinated management of continuous blanking mills (BZS) and continuous small grade mills (BDS). It is shown that at the final stage of the production of commercial products on continuous rolling mills, metal losses occur due to non-dimensional residues and excessive trimming, which arises, on the one hand, as a result of the fact that the length of the workpiece, which is fed to the entrance of the rolling mill, is not a multiple of the finished dimensional profile , and on the other - due to the peculiarities of the equipment of the rolling mills that implement cutting operations. The paper shows that the choice of methods for cutting rolled metal is a multi-criteria task. The analysis of the marginal deviations of the geometric dimensions of the blanks and small rolled products was carried out. On the basis of the calculations, it is shown that the simultaneous provision of the economic criterion and the criterion of the maximum yield of dimensional rolled bars is possible only in the production of reinforcing profiles larger than No. 14, and in the production of smaller profiles, the criterion of the maximum filling of the refrigerator should be used. It is shown that in the production of fine-grade profiles, the most effective method is the method of cutting rolled steel with cutting off the non-dimensional part. The obtained data can be used to build cutting plans in the production of commodity rolled metal.
The accuracy of rolling thickness adjustment in conditions of high-frequency disturbances taking into account the speed of roll setting devices
Authors:   Ukrainian State University of Science and Technologies, Potap О. Yu. , Ivanichyk А. V. ,   Ukrainian State University of Science and Technologies
Published: May 2023

In the continuous mills, where the strip thickness at the entrance contains a high-frequency component caused by the eccentricity of the rolls of the previous cage, the effectiveness of AGC-systems for regulating the thickness of the rolled product depends on the speed of operation of hydraulic roll setting devices (HRSD). Analytical substantiation of the transfer functions of the AGC-system by the eccentricity of the rolls and by the thickness of the undercut, taking into account the real speed of the HRSD has been carried out. The frequency characteristics of the AGC-system are analytically determined. It has been proven that with the available speed of the HPD in the interval of rotation frequencies of the support rolls inherent in cold rolling (ω= 5 – 15 s-1), the amplitude-frequency characteristic (AFC) of the AGC-system is almost linear. AFC depending on the time constant T of the HRSD and the ratio of the modulus of rigidity of the rolling strip MΠ to the modulus of rigidity of the rolling stand МK varies within wide limits from A(5)=0.05 (at ω = 5s-1; T=0.01 s; MΠ/MK = 1) to A(15)=0.48 (at ω = 15 s-1; T = 0.01 s; MΠ/MK = 4). At the same time, the thickness variation at the outlet of the cage meets the requirements for thin cold-rolled products of high precision. It has been proved that under the conditions of regulation of the thickness of the rolling strip according to the AGC-algorithm the amplitude of the oscillations of the rolled thickness caused by the eccentricity of the rolls is smaller than the amplitude of the oscillations of the roll gap caused by the eccentricity and decreases with an increase in the rotation frequency of the rolls and the time constant of the HRSD according to a close to linear law. Such linearity creates the basis for the application of adaptive algorithms for determining the actual amplitude of fluctuations of the roll gap in automated systems for compensating the eccentricity of the rolls.
Research of laboratory rolling stand 150 as an object of automation
Authors:   Ukrainian State University of Science and Technologies, Zinchenko M. D. , Potap O. Y. ,   Ukrainian State University of Science and Technologies
Published: May 2023

The purpose of the work is to study the laboratory rolling mill 150 as an object of automation to establish the relationship between rolling parameters and the dimensions of the rolled products, as well as the implementation of the system of automated regulation of the thickness of the rolled products (SAR). The work is intended for further application in the educational process for the formation of students' competencies in the study of automation objects and the synthesis of SAR. Teaching students with the help of computer equipment and technological process simulation packages definitely made progress in education, allowed to quickly explore different modes of processes and obtain the necessary solutions to problems. But the lack of studies of real processes with real sensors and executive mechanisms and in the conditions of obstacles creates a feeling of ease in research and decision-making. The conducted experimental studies made it possible to establish the dependence between the thickness of the finished rolled product and the rolling force, the change in the thickness of the roll and the change in the gap between the rolls. The stiffnesses of the rolling mill and rolled metall were determined. The stiffness of the rolling mill is equal to 26801 N/mm and is much higher than the stiffness of rolled steel. It is shown that the line of plastic deformation of the rolled product has a significantly nonlinear character, the stiffness of the rolled product varies in the range of 618 - 7093 N/mm. It is shown that changing the inter-roll gap does not provide full compensation for the effect of changing the thickness of the roll. Research has also shown that to determine the necessary parameters, it is enough to have a limited number of lead samples, which allows you to apply experimental research in the educational process. The conducted experimental studies determined that it is possible to conduct them in the conditions of laboratory work performed by students, they allow students to gain the necessary experience in the study of the rolling state as an object of automation and the operation of the system for regulating the thickness of the rolled metal.
Modern perspective metal materials for armored obstacle (overview)
Authors:   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Kononenko G. A. , Kimstach T. V. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Safronova O. A. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Podolsky R. V. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Puchikov O. V. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Klinova O. P. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine
Published: May 2023

To date, means of protection of all types of armored vehicles against damage by small arms are actively being developed, new grades of steel with increased anti-projectile resistance indicators are being developed, which ensure a reduction in the metal content of structures while simultaneously increasing the tactical and technical characteristics of the product. The constant increase in requirements for the protection of armored vehicles, caused by the improvement of highly effective means of attack, dictates the need to find new approaches to increase the dynamic stability of armored steels using modern metallurgical, material science and construction achievements. The development and design of workable materials and structures of armor protection is a complex scientific and technical problem. The purpose of the work is to determine, based on the analysis of literary sources, the main trends in the development and improvement of modern metal materials for the manufacture of armored obstacles, which have high dynamic resistance against modern highly effective small arms weapons. The paper analyzes the most widely used metal materials for the manufacture of armored barriers, presents information about their advantages and disadvantages, and provides an assessment of the prospects for further development of this industry. It is noted that the current concept of weapons development is aimed at the use of high-tech materials and innovative methods that allow improving protective functions without increasing the mass and dimensions of armor protection. Currently, many different materials are used to create armor protection: metal plates based on steel, titanium, aluminum and their alloys, aramid or polyethylene fibers, as well as ceramics based on boron carbides, silicon, and others. In accordance with the existing concept of increasing the effectiveness of armor protection and ensuring a combination of firepower, security and mobility, the use of promising materials for the creation of armor protection provides an additional reserve for increasing the combat and military-economic efficiency of military equipment.
Comparative study of mechanical properties of 316L steel samples made on the ALFA-150 machine in compliance with world analogues
Authors:   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Kononenko G. A. ,   LLC "Additive laser technology of Ukraine", Adjamsky S. V. ,   LLC "Additive laser technology of Ukraine", Podolskyi R. V. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine,   LLC "Additive laser technology of Ukraine",   Ukrainian State University of Science and Technologies, Safronova O. A. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Shpak E. A. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine
Published: May 2023

The purpose of the work is to study the microstructure and mechanical properties of 316L stainless steel samples made by the SLM method. 316L stainless steel has been extensively studied for the state after fabrication by selective laser melting (SLM). This is due to the wide use of this material in various industries, as it demonstrates sufficient corrosion resistance and excellent plasticity. Thus, its application can be found in the biomedical, aerospace, automotive and marine fields. Some of the studies conducted have shown the ability of SLM to improve the mechanical properties of parts compared to traditional methods. Metallographic analysis, determination of mechanical properties, and chemical analysis were used. The object of the study was austenitic grade 316L stainless steel. The material for making the samples was a 316L alloy powder with a particle size of 45 + 15 μm. Experimental samples for tensile tests were built on the equipment of "Additive Laser Technologies of Ukraine" LLC (Alfa-150) using SLM technology in identical modes: laser power - 290 W, scanning speed - 1100 mm/s, distance between tracks – 0.11 mm, scanning strategy - checkerboard fields, scanning order - Zig-Zag, field size - 5 mm, rotation of the layer relative to the previous one - 67°. From the results of the analysis of mechanical properties, it was established that the samples made on the 3-D printer of Additive Laser Technologies of Ukraine LLC are not inferior in terms of quality to leading global companies, and in some characteristics even exceed them. It should be noted that the results of determining the characteristics of the experimental samples were compared with the properties of the samples manufactured according to the optimal process parameters on the equipment of different manufacturers, but do not include the influence of the thickness of the applied layer. Comprehensive studies of the mechanical properties of the samples made of 316L steel showed full compliance with the samples produced on the equipment presented on the world market for the production of special-purpose products.
Scientific and technical support of the Concept of sustainable development of black metallurgy of Ukraine
Authors:   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Babachenko O. I. , Tuboltsev L. G. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Merkulov O. Ye. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Levchenko G. V. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine
Published: May 2023

The article examines the prospects of scientific and technical support for the development of ferrous metallurgical Ukraine, taking into account the consequences of the military aggression of the Russian Federation. On the basis of a comprehensive analysis of the current state of the industry, the possibilities of implementing modern and promising technologies of metallurgical production have been determined in accordance with the proposed project "Concept of sustainable development of ferrous metallurgy of Ukraine". Possible scenarios and stages of development of ferrous metallurgy were discussed, priority directions for the near, medium and long term were determined. It was emphasized that the development of the ferrous metallurgical and mining and metallurgical complex of Ukraine as a whole should be connected with the implementation of the best available technologies (Best Available Techniques), conducting promising scientific research and implementing systematic scientific and technical support of production. The priority areas of development of sub-sectors of the metallurgical industry are considered. Prospective ways of improving technologies for all main metallurgical processes are proposed. It was noted that along with the improvement of the process of obtaining iron in blast furnaces, it is expedient to develop off-blast production using raw materials available in Ukraine. Progress in steelmaking is, first of all, due to the improvement of modern oxygen-converter and electric steelmaking technologies. It was established that rolling production needs modernization of industrial equipment and an increase in the range of metal products. It is shown that the decarbonization of steel production should become a promising direction for the development of the metallurgical industry and one of the means of solving environmental problems. Target indicators of sustainable development and effectiveness of scientific and technical support of the metallurgical industry in the perspective of 2050 have been determined. The successful solution of the tasks and the implementation of the future development directions defined by the Concept will allow the metallurgical industry to firmly establish itself on the trajectory of sustainable growth and provide Ukraine with one of the competitive advantages in the international arena.
Designing the production of segments of protective structures by modern metallurgical technologies
Authors:   Physico-technological Institute of Metals and Alloys of the NAS of Ukraine, Doroshenko V. S. , Shalevska I. A. ,   Physico-technological Institute of Metals and Alloys of the NAS of Ukraine
Published: May 2023

The development of new technologies for the construction of protective structures of multifunctional purpose reflects the current need to improve measures for the protection of civilian human and material resources (and double -purpose), as well as to increase defense capability through structures, buildings, storage and shelter. The article concerns research and design development of metal structures for the field of construction of such structures, armor, and relevant to the technologies of erection of fortifications and armor obstacles. Construction structures made of metal compared to structures made of stone, reinforced concrete and trees have significant advantages that are proposed to be implemented by the use of a cast metal segment weighing up to 50 kg for the erection of protective structures. This solves the problem, which is the simple installation of such structures from segments, even in the field, and the possibility of variation of the structure of structures, for example, an arbitrary increase in their addition of segments or the formation in the structure of holes. Such a segment causes a slight collapsing ability to relax the structures. The segment is simple to pour in numerous even small foundry shops or sites, which can be converted to new casting technologies and strengthening of heat treatment for increasing the ratio of strength to segment mass. Also, by analogy with known patents, a variant of the design of the heat -processed segment of cast iron or steel with high mechanical properties due to the effect of self -aggregation during loading, which consists in partial absorption Increases metal strength in the deformation zone. For the production of lightweight segments, it is recommended to use the Lost Foam Casting Process.
Development and testing of algorithmic support of the expert system for selecting the optimal composition of multicomponent blast furnace charge in specific conditions of blast furnace operation
Authors:   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Togobitskaya D. M. , Belkova A. I. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Muravyova I. H. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Ivancha M. H. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Stepanenko D. O. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Nesterov O. S. ,   Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Likhachov Y. M.
Published: May 2023

The aim of the work is to develop and test for specific conditions of the blast furnace algorithmic means of the Expert system for selecting the optimal composition of the multicomponent charge, which provides the necessary technical and economic indicators of melting in variable raw material and energy conditions. The features of algorithmic means of the system for selecting the optimal composition of blast furnace charge, which are developed using methods of physicochemical and mathematical modeling of the processes of distribution and melting of iron ore materials in different zones of the furnace for the development of scientifically based recommendations for adjusting the composition of the charge, taking into account the available raw materials and energy resources. The system implements a set of physicochemical models and criteria for describing the processes of distribution of iron ore materials along the blast furnace radius, their phase transformations in high-temperature zones and directed formation of melts, which are regulated by a system of reasonable technological constraints. The information basis for the creation of predictive models for calculating the physical and chemical properties of metallurgical melts is the information accumulated in the databases "Iron ore materials", "Slag" and "Metal-slag" created in the Institute of Ferrous Metallurgy of the integrated Knowledge Base "Metallurgy". The solution of the optimization problem is carried out on the basis of expert evaluation of the forecasting of melting indicators and calculation of the optimal composition of the charge using vector optimization methods by finding a compromise between the accepted optimality criteria and technological constraints. The Expert system has been tested and recommendations on the component composition of blast charge for specific blast furnace operating conditions have been developed.
Aplicación del “TRX” y el “RIP Training” al Desarrollo de la Resistencia de la Fuerza en el Tenis
Authors: Martínez Jordi , Beltrán Carlos , Alcalá Iván , Gonzalez Richard
Published: May 2023

La periodización del entrenamiento en el tenis actual se caracteriza gradualmente por una reducción progresiva de los periodos de preparación y un aumento paulatino de los periodos de competencia. La condición física ya no es la única prioridad en el periodo preparatorio de un jugador sino que se debe atender a una puesta a punto global del jugador para que el rendimiento sea el máximo desde la primera semana de la etapa de competencia. Esta situación nos plantea un gran desafío tanto a preparadores físicos como a entrenadores para conseguir una adecuada preparación física de nuestros jugadores que les permita alcanzar un alto rendimiento sostenido al tiempo que se mantienen libres de lesiones. Dentro de todas las cualidades físicas necesarias para el alto rendimiento en tenis, la resistencia de la fuerza es una de las más relevantes. El presente artículo presenta la aplicación al tenis del “TRX” y “RIP training” como métodos de desarrollo de la resistencia.
Association of Undiagnosed Pre-Diabetes and Type-2 Diabetes Mellitus with Interleukin-2 mRNA Expression Among Adults in Bayelsa State, Nigeria
Authors: Ogbole Faith Ajiebabhio , Harold Blessing Azibaolanari
Published: May 2023

Many cases of hyperglycemia are undiagnosed in Nigeria due to poverty and inadequate access to health care. Although hyperglycemia and type 2 diabetes mellitus (T2DM) are inflammatory conditions, however, the role of inflammatory mediators such as interleukin-2 in hyperglycemia and T2DM is not fully understood. The aim of the present study was to evaluate the prevalence and association of undiagnosed pre-diabetes and T2DM with IL-2 mRNA level among adults in Bayelsa State, Nigeria. A cross sectional design was employed to randomly select 130 adults and they were grouped into three: normal control, prediabetes, and T2DM. Fasting blood glucose concentration was measured using Accu-answer glucometer, while mRNA level of IL-2 was quantified using real time PCR method. The prevalence of undiagnosed pre-diabetes was 43.07% (males, 19.23%; females, 23.85%) while undiagnosed T2DM was 16.15% (males, 6.92%; females 9.23%). The expression of IL-2 mRNA was significantly upregulated in both pre-diabetes and T2DM subjects compared with normal control (p < 0.05), but was significantly higher among T2DM subjects. Age ≥ 50 years, physical inactivity and marriage was significantly associated with hyperglycemia and T2DM (p < 0.05). The present study found a high prevalence of undiagnosed pre-diabetes and T2DM among adults in Bayelsa State, Nigeria. Association of prediabetes and T2DM with IL-2 mRNA expression was found. IL-2 mRNA level might be a useful biomarker for monitoring diabetes mellitus progression. Directing diabetes survey and interventions to rural communities is highly recommended.

Keywords: [Undiagnosed Diabetes, pre-diabetes, IL-2, rural communities, Bayelsa State, Nigeria]
Diagnosis and treatment of acute purulent-catarrhal mastitis of cows in private subsidiary farms of the Kavalerovsky district of Primorsky Krai
Authors:   Primorsky State Agricultural Academy, Kamliya Igor , Momot Nadezhda ,   Primorsky State Agricultural Academy, Kolina Yulia ,   Primorsky State Agricultural Academy, Terebova Svetlana ,   Primorsky State Agricultural Academy
Published: May 2023

One of the reasons for the decrease in dairy productivity of cows, sanitary and technological properties of milk, as well as premature culling of animals is mastitis.Despite the fact that extensive scientific research is being conducted around the world to develop measures to reduce the incidence of cows with mastitis, this problem continues to be one of the most urgent for dairy farming. The damage caused by this pathology consists of the loss of milk productivity, premature culling of animals, deterioration of milk quality, increas- ing treatment costs.In our work, we analyze data on the diagnosis and treatment of cows with acute purulent-catarrhal mastitis in personal subsidiary farms serviced by the FKGBI “Dalnegorskaya VSBBZh” Kavalerovskaya SBBBZH. To achieve this goal, the following tasks were set: 1. To study the methods for diagnosing acute purulent-catarrhal mastitis in cows in private farms serviced by the FKGBU “Dalnegorsk VSBBZh” Kavalerovskaya SBBBZH. 2. To study the methods of treatment of acute purulent-catarrhal mastitis in cows in private farms serviced by the FKGBU “Dalnegorsk VSBBZh” Kavalerovskaya SBBBZh.
Diagnosis and spread of prostate gland pathology in dogs in the city of Voronezh
Authors:   Voronezh State Agrarian University named after Emperor Peter I, Chernaya Ksenia , Pigareva Galina ,   Voronezh State Agrarian University named after Emperor Peter I
Published: May 2023

The authors analyzed domestic and foreign sources of literature on the prob- lems of pathology of the sexual sphere of males. In practice, benign hyperplasia, acute and chronic prostatitis, abscess and prostate tumors in males are widespread diseases. The most important task of practicing veterinarians is the early diagnosis of prostate pathology in males of reproductive age. With early diagnosis of the disease, timely effective treatment of breeding animals, restoration of their reproductive function is possible. The paper presents the results of our own research on the spread of pathology of the reproductive system of males of different breeds and ages in the conditions of the veterinary clinic of the city of Voronezh.
The aortic arch of piglets
Authors:   St. Petersburg State University of Veterinary Medicine, Bylinskaya Darya , Shchipakin Mikhail ,   St. Petersburg State University of Veterinary Medicine, Khvatov Viktor ,   St. Petersburg State University of Veterinary Medicine
Published: May 2023

The morphology of the branches of the aortic arch is an important topic in car- diology. Vessels extending from the aortic arch may differ in number, place of departure in different species of animals, as well as have variations of branching within the same species. However, regardless of the existing variations, all of them are the main arterial highways for organs and tissues of the head, neck and thoracic extremities. Considering the above, we set a goal to study the branches of the aortic arch in piglets and give them a morphometric characteristic. The corpses of newborn piglets of the Landrace breed served as the material for the study. The research method was fine anatomical dissection and morphometry. For fine anatomical dissection, injection of the vascular bed with colored latex was performed. During the study, it was found that two arteries depart from the aortic arch in newborn pig- lets: the left subclavian and the brachiocephalic. When comparing the diameters of these arteries, it can be noted that the distribution of blood flow occurs asymmetrically. The bra- chiocephalic artery has a larger diameter. The brachiocephalic artery follows in the cranial direction and gives off the trunk of the common carotid arteries, after which it continues as the right subclavian artery. The diameter of the trunk of the common carotid arteries ex- ceeds that of the brachiocephalic artery. The diameter of the right subclavian artery did not significantly differ from that of the left subclavian artery. Branches of subclavian arteries include two groups: dorsal and ventral. Mainly the dorsal direction has the costal-cervical trunk, deep cervical and vertebral arteries, and the ventral direction has the brachial trunk, internal thoracic and superficial cervical arteries. The largest artery from the group of dor- sal branches is the costal-cervical trunk. Among the group of ventral branches, two arteries reach the maximum diameter: the internal thoracic and the brachial trunk.
Controle alternativo de fungos em sementes de Gossypium hirsutum L. e efeitos na qualidade fisiológica.
Authors:   , Vinícius Bezerra da Silva José
Published: May 2023

O algodoeiro (Gossypium hirsutum L.) é acometido por diversas doenças que, em sua maioria, são transmitidas por sementes, resultando em perdas significativas na produção. Com isso, o tratamento das sementes torna-se, então, um parâmetro imprescindível no manejo e controle destas doenças. Objetivou-se determinar a qualidade sanitária e fisiológica de dois lotes de sementes de algodoeiro Lote 1: Cultivar BRS Aroeira e lote 2: Cultivar BRS 416, ambas submetidas a tratamentos com óleos essenciais de Pimpinella anisum L., Mentha piperita L., e Dianthus caryophyllus L. nas concentrações de 1, 2, e 3% e a tratamento asséptico em diferentes combinações. Em todos os testes a testemunha correspondeu apenas na imersão das sementes em ADE. Para os tratamentos que utilizaram os óleos essenciais, as sementes foram imersas por 5 minutos nos tratamentos e o fungicida aplicado diretamente sobre a superfície das sementes. O delineamento utilizado foi inteiramente casualizado. Em relação à eficiência dos óleos essenciais utilizados para tratamento de sementes, Os óleos essenciais de Mentha piperita L. e Dianthus caryophyllus L. nas concentrações de 1, 2 e 3% são eficientes na redução dos fungos: Aspergillus sp., Aspergillus niger, Penicillium sp. e Periconia sp;. O fungo Fusarium sp. foi reduzido quando utilizou-se os óleos de Pimpinella anisum L. e Mentha piperita L. nas concentrações de 1, 2 e 3%;. O uso do hipoclorito de sódio nas concentrações de 1 e 3% são eficientes na redução de Aspergillus sp., Aspergillus niger, Penicillium sp. e Periconia sp; Fusarium sp. Referente à eficiência dos óleos essenciais sobre a qualidade fisiológica das sementes de algodão, os óleos essenciais de Erva Doce e Menta nas concentrações de 2 e 3%, e Cravo à 1,2 e 3%, demonstraram resultado positivo proporcionando o aumento do número de Primeira contagem (PC), sementes germinadas (GER), Comprimento de Parte Aérea(CPA), Comprimento de Raiz(CPR) e Comprimento de Plântula(CPL) e reduziram o número de Sementes mortas SM. Contudo, de início, as concentrações de 2 e 3% do Óleo Essencial de Menta seriam as mais indicadas para o tratamento sanitário e qualidades fisiológicas das sementes de algodão.
RADIATION NECROSIS AFTER CAVERNOMA RADIOSURGERY SIMULATING BRAIN HIGH-GRADE GLIOMA – A CASE REPORT AND REVIEW OF THE LITERATURE
Authors:   Department of Radiology, University Hospital St. Marina, Medical University Varna, Bulgaria., Georgiev Radoslav
Published: May 2023

We report a 62-year-old female patient who came to our institution due to pain and limited movements in the neck area, nausea, and headache. The magnetic resonance imaging (MRI) revealed a single larger and two smaller lesions with the appearance of cavernomas in the left parietal brain region. The patient was consulted with a neurosurgeon and was judged to be inoperable. Radiosurgery was performed in ​​the cavernoma with a total focal dose of 15Gy. 11 months after the radiotherapy, during a routine follow-up MRI scan, a tumor-like lesion with extensive perifocal edema and midline dislocation, with heterogenous structure and ring-like enhancement was reported in the left parietal brain region. After follow-up for 15 months, the last MRI showed almost complete reverse development of the described lesion, with marked reduction of volume, edema, and contrast enhancement. Along with MRI features of the lesion, some of which overlap with high-grade glioma characteristics, the evolution of the lesion is in favor of a radiation necrosis zone.
Reliability and Accuracy of Three Anatomical Landmarks for Spinal Level Estimations
Authors:   Hotel-Dieu de France Hospital, Anesthesia and Intensive Care Department, Alfred Naccache street, Ashrafieh, Beirut, Lebanon., Richa Freda
Published: May 2023

Background: Three anatomical landmarks are used to identify a suitable vertebral level for spinal anesthesia: a) Tuffier line (TL), b) tenth rib line (TRL) and c) posterior superior iliac spine (PSIS). We aim to determine reliability and accuracy of these landmarks compared to radiologic landmark.
Indications and Outcomes of Abdominal and Vaginal Hysterectomies at Tertiary Hospital in Nnewi, Nigeria
Authors:   Nnamdi Azikiwe University, Awka (Nnewi Campus), P.M.B. 5001 Nnewi, Anambra State, Nigeria., Uchenna Eleje George
Published: May 2023

Background: Hysterectomy is a common gynecological surgery done for malignant and benign conditions of the uterus and structures around it. Uterus can be assessed through various routes with each having its indications, contraindications and associated complication. Objectives: To determine the prevalence and compare biosocial characteristics, indications, complications of procedure, durations of stay in the hospital and mortality between both abdominal and vaginal hysterectomies.
Research on Recent Progress in the Treatment of Thin Endometrium
Authors:   The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China., Kong Na
Published: May 2023

Objective: The endometrium is an important part of the uterus. The human endometrium is a complex and dynamic tissue that goes through phases of growth and regression during any menstrual cycle. In this review, we review the literature on thin endometrium and discuss recent therapeutic tools and recent progress of thin endometrium to inform clinicians on better treatment options.
Bilateral Frontal Sinus Ectopic Angiofibroma: Focus on Management of a Rare Lesion with Unusual Presentation
Authors:   Department of Surgical Specialties, ASST Sette Laghi, Ospedale di Circolo e Fondazione Macchi, Varese, Italy., Macchi Alberto
Published: May 2023

Extranasopharyngeal Angiofibromas (ENA) are rare benign tumors originating in the majority of cases from the nasal septum, while involvement of the frontal sinus is extremely rare, with few cases reported in literature. ENA present the same histological characteristics and immunophenotype of Nasopharyngeal Angiofibromas (NA), which are more commonly found; however, they do not present the typical clinical presentation of their nasopharyngeal counterpart, therefore biopsy is mandatory to obtain the diagnosis.
There is no Justification for Shame - Educating Military Environment about Testicular Torsion Risks
Authors:   Soroka University Medical Center, Beer Sheva, Israel., Newman Nitza Heiman
Published: May 2023

Many young males, are serving in military forces around the world, as compulsory or voluntary. Most of them serving far from home and even far from their country. The facilities of medical assistance is different between the systems, very challenging considering and compering to the civil medical aid.
Clinical Characteristics and Short-term Prognosis of Butterfly-Aneurysmal Subarachnoid Hemorrhage
Authors:   The First Affiliated Hospital of Xiamen University, China., Wang Zhangxiang
Published: May 2023

Objectives: To investigate the clinical characteristics and short-term prognosis of butterfly-aneurysmal subarachnoid hemorrhage. Materials and methods: We retrospectively reviewed the data of adult patients who underwent microsurgical clamping of aneurysmal subarachnoid hemorrhage at the First Affiliated Hospital of Xiamen University between January 2017 and May 2022 for complications and prognosis. Multivariate logistic regression analyses were used to explore the variables related to the prognosis of butterfly-aneurysmal subarachnoid hemorrhage. SPSS 20.0 software was used for statistical analysis.
Alzheimer Hastalığı ve Anti-Alzheimer Etkili Bileşiklerin Yapılarının Araştırılması
Authors: TARI Özden , YAĞMURTAŞAN Ramazan
Published: May 2023

Demansın en yaygın şekli olan Alzheimer hastalığı, hafıza kaybı ve diğer bilişsel problemler ile karakterize karmaşık bir hastalıktır. Artan prevalansa sahip olan Alzheimer hastalığının fizyopatolojisinin anlaşılması ve bu hastalığın tedavisinde etkin olan bileşiklerin yapılarının araştırılması, yeni etkin ilaç moleküllerinin geliştirilmesine yardımcı olacaktır. Bu anlamda hastalık üzerinde etkili olan hipotezlerin, etkin olan bileşiklerin yapısının ve etki mekanizmalarının araştırılması büyük önem taşımaktadır. Son yıllarda yapılan araştırmalarda, hastalığın patolojisinde etkili olan hipotezlerin birden fazlasını etkileyebilen daha güçlü bileşikler elde edilmeye odaklanıldığı görülmektedir. Bu derleme çalışmasında, Alzheimer hastalığının patolojisinde rol oynayan önemli hipotezler ile bu hipotezler üzerinden anti-Alzheimer etkinliği kanıtlanmış ilaç etken maddelerinin yapıları ortaya konulmuştur.
Impact of Couple Stress with Rotation on Walters, B Fluid in Porous Medium
Authors: ali zainab , Thawi Mizal , Hummady Liqaa
Published: May 2023

: With the help of a couple stress model and a porous material, this research examines peristaltic flow of Walter's B fluid through an asymmetric channel. For the balance of mass, motion, trapped phenomena, velocity distribution, and pressure gradient, the constitutive equation is modeled. In the flow analysis, a wavelength with a low Remolds number assumption is chosen, and the perturbation method is used to provide an accurate solution. Gained knowledge includes the impact of various parameters on the confined phenomenon's velocity distribution and pressure gradient. The set of numbers presented here is a graphic analysis of these parameters.
A Study on the Networking Space in the Gulf Region: Focusing on Diwaniya Case in Kuwait
Authors:   The Institute of Middle East, Eum Ik-Ran
Published: May 2023

Majlis is a social space where men in the Gulf region regularly gather in a specific place to socialize. People tend to reveal their cultural awareness and traditional values through the way they use space, as space is a tangible expression of an intangible culture. The case of diwaniya in Kuwait, where the socialization culture is mostly active, was used in this study to analyze the history and origin of the space of majlis, its social functions, role, and evolution over time. What distinguishes Kuwaiti diwaniya from other Gulf countries is as follows: first, it is a private and safe space from government intervention and surveillance, and therefore, a space where political activities occur. Second, Kuwaiti diwaniya is not a revival of traditional culture in the modern era; it functions as an organic space, and therefore, it evolves and transforms according to the social context. Based on a review of extant literature, this study traced the evolution process of diwaniya and its unique characteristics from the period prior to the formation of the state of Kuwait to the current era of modernization and digitalization.
Personal healthcare data records analysis and monitoring using the internet of things and cloud computing
Authors: Zaguia Atef
Published: May 2023

This paper presents a proposed system for cloud-based and Internet o Things (IoT)-based electronic health records (EHRs) that utilize wearable body biosensors to collect biometric data in real time and analyze it to provide personalized therapy recommendations. The study aims to ensure the confidentiality and integrity of patient data through security authorizations, device authentication, and encrypted communication channels. The research method involves describing the proposed system’s communication environment and trust boundary and illustrating the communication mechanisms, including the “starting” and “authentication” procedures. The proposed communication protocols are also explained in detail, and a complete illustration of the symbols and abbreviations used throughout the work is provided. The initialization process involves contacting a body sensor network (BSN) server to register, generating a secret key, and assigning a track sequence number. The proposed systematic verification involves a dependable authentication solution to maintain secure communication between the biosensors, local processing unit (LPU), and BSN server. The verification process involves figuring out the values and generating a random integer, establishing communication with the receiver, and validating the data by searching for a corresponding tuple in the required database. The study emphasizes the importance of a robust IoT communication architecture to ensure secure data transfer between devices, networks, and individuals.
Rezension von: Feld, Helmut, Franziskus von Assisi und seine Bewegung
Authors: Stihler Daniel , Feld Helmut
Published: May 2023

Helmut Feld, Franziskus von Assisi und seine Bewegung, Darmstadt (Wissenschaftliche Buchgesellschaft) 1994. 537 S.
Rezension von: Haasis, Hellmut G., Joseph Süß Oppenheimer, genannt Jud Süß
Authors: Kottmann Ingeborg , Haasis Hellmut G.
Published: May 2023

Hellmut G. Haasis, Joseph Süß Oppenheimer, genannt Jud Süß. Finanzier, Freidenker, Justizopfer, Reinbek (Rowohlt) 1998. 478 S„ Abb.
Rezension von: Waller, Hellmut (Bearb.), In Vorderösterreichs Amt und Würden
Authors: Ehrmann Peter , Waller Hellmut
Published: May 2023

Hellmut Waller (Bearb.), In Vorderösterreichs Amt und Würden. Die Selbstbiographie des Johann Baptist Martin von Arand (1743-1821) (Lebendige Vergangenheit. Schriftenreihe des Württ. Geschichts- und Altertumsvereins, Bd. 19), Stuttgart (Kohlhammer) 1996 (unveränd. Neuauflage 1999). 246 S., 9 Abb. und 4 Tafeln.
Green Business – an Integral Part of the Green Economy
Authors: Todos Irina
Published: May 2023

Contemporary business is seen as a type of business that participates in multiple green activities, ensuring that all processes, products and production activities adequately address environmental concerns. Thus, the “green business” incur porates the principles of sustainability in its activities, offering goods and services that cover the demand for ecological products, assumes environmental commitments in its operations and, at the same time, is an integral part of a sustainable economy. The purpose of this paper is to highlight the decisive role of green businesses in the promotion and development of green economy. States that have joined and adopted the green economy principles will transform their economies into “sustainability engines”, thus being prepared for the new challenges of the 21st century. The greening performance of businesses can be evaluated with the help of the Green Index.
Chinese MSMEs internationalization in Latin American markets under the Belt and Road Initiative
Authors: Estrader Joaquín , Zottele Esteban
Published: May 2023

Micro, small, and medium enterprises (MSMEs) is an essential topic for business research and development policies. By reviewing previous literature and macroeconomic data, and following a deductive method, this study explains MSMEs' contribution to national development, that is, a positive effect in terms of employment, regional economies, technological innovation, andincome distribution. In addition, we focus on Chinese MSMEs' internationalization and competitive advantages in Latin American markets as a natural extension of the 21st Century Maritime Silk Road. Additionally, we explain the essential role of the Belt and Road Initiative in Chinese companies’ internationalization, particularly in building a platform for MSMEs operations in Latin America and the Caribbean. After conclusions we suggest further research directions.