bluuebunny/crossref_metadata_2025 huggingface dataset:
Improving the technology of the synthesis of fatty acid monoglycerides using the glycerolysis reaction
Authors: Saveliev Dmytro , Petrova Olena , Yashchenko Oleksandr , Rudakov Serhii , Harbuz Serhii , Shevchuk Natalia , Kachanova Tetiana , Gill Michael , Bolhova Nataliia , Borozenets Nataliia
Published: July 2023

The object of research is the process of fat glycerolysis in order to obtain fatty acid monoglycerides.
Monoglycerides are an important component of chemical, pharmaceutical, cosmetic, and food industry products. These substances are used as emulsifiers, structure formers, complex formers, etc. The industrial production of monoglycerides involves the use of complex technologies, as well as dangerous and unstable catalysts. An urgent task is to develop new catalysts and improve technologies for monoglycerides obtaining.
The technology for the synthesis of monoglycerides by the glycerolysis method, which involves the reaction of vegetable hydrogenated fat with glycerol, was studied. Potassium glyceroxide was used as a catalyst, which is effective and safe in terms of production and use.
Hydrogenated unrefined fat according to DSTU 5040 (CAS Number 68334-28-1) was used. The fat has non-standard parameters: the melting point is 51 °C, the mass fraction of moisture and volatile substances is 0.3 %, the acid value is 3.2 mg KOH/g, the peroxide value is 7.6 ½ O mmol/kg.
The process duration was 90 minutes, the glycerol concentration was 50 %. Rational conditions for glycerolysis were determined: catalyst concentration (1.5 %) and temperature (140 °C). Under these conditions, the product ensured the stability of the “water – sunflower oil” emulsion of 96.8 %, the concentration of monoglycerides in the system was 0.1 %. Product parameters: mass fraction of monoglycerides – 72.5 %, free glycerol – 1.5 %, acid value – 1.7 mg KOH/g.
The research results make it possible to improve the glycerolysis process using a new catalyst and obtain monoglycerides with high emulsifying ability. This will increase the profitability of the enterprise and increase the volume of production of high-quality monoglycerides for various industries
Determining the patterns of extinguishing polar flammable liquids with a film-forming foaming agent
Authors: Tsapko Yuriy , Likhnyovskyi Ruslan , Tsapko Аleksii , Kovalenko Vitalii , Slutska Oksana , Illiuchenko Pavlo , Sokolenko Kostiantyn , Gulyk Yuriy
Published: July 2023

An issue related to the use of foaming agents to extinguish fires involving flammable liquids is to ensure the efficiency of vapor insulation of flammable liquid and the foam stability during operation. Therefore, the object of research was a change in the insulating properties of the foaming agent film when interacting with a polar combustible substance. It has been proven that the presence of foaming agent on a flammable liquid leads to the formation of an insulating film on the surface resistant to the combustion temperature of the liquid, due to which re-ignition shifts towards longer time. A film of foaming agent was formed on the surface of the flammable liquid by leaking from the screen, which led to the insulation of the surface. The measured contact area of the foaming film with the electrode was more than 6.2·10-3 m2, which indicates the formation of a barrier for temperature, which collapses over time. According to experimental data on changes in electrical resistance, the critical contact area of the foaming film with the electrode was calculated, at which the film is destroyed. Based on the derived dependences, the change in the process of mass transfer of the foaming film to a flammable liquid was calculated, equal to about 800 s. The maximum possible mass transfer of the foaming agent into the flammable liquid and the reduction of insulation capacity were evaluated. The peculiarities of foam supply to the surface of alcohol through the screen are that the quenching time was about 156 s while the critical intensity of the supply of the working solution of the foaming agent was 0.054 dm3/(m2·s). And the time interval before re-ignition was about 470 s, which is enough to cool the fire site. Thus, there is reason to assert the possibility of targeted control over the processes of extinguishing polar flammable liquids with a foaming agent
Determining regularities in the construction of curves and surfaces using the Darboux trihedron
Authors: Ahmed Ali Kadhim , Nesvidomin Andrii , Pylypaka Serhii , Volina Tatiana , Dieniezhnikov Serhii
Published: July 2023

The Frénet trihedron, known in differential geometry, is accompanying for a spatial and, as a special case, for a flat curve. Its three mutually perpendicular unit orts are defined uniquely for any point on the curve except for some special ones. Unlike the Frénet trihedron, the Darboux trihedron relates to the surface. Two of its unit orts are located in a plane tangent to the surface, and the third is directed normally to the surface. It can also be accompanying for the curve, which is located on the surface. To this end, one of the orts in the plane tangent to the surface must be tangent to the curve.
Trihedra are movable and, with respect to a fixed coordinate system, change their position due to movement and rotation. The object of research is the process of formation of curves and surfaces, as a result of the geometric sum of the bulk motion of the Darboux trihedron and the relative motion of the point in its system under given conditions. In the study of the geometric characteristics of curves and surfaces, it is necessary to have formulas for the transition from the position of the elements of these objects in the system of a moving trihedron to the position in a fixed Cartesian coordinate system. This is exactly what needs to be solved. The results obtained are parametric equations of curves and surfaces that are tied to the initial surface. Nine guide cosines were found, three for each ort.
A distinctive feature of this approach in comparison with the traditional one is the use of two systems: fixed and mobile, which is the Darboux trihedron. This approach allows us to consider in a new way the problem of the construction of curves and surfaces. The scope of practical application can be the construction of geometric shapes on a given surface. An example of such a construction is the laying of a pipeline along a given line on the surface. In addition, the sum of the relative motion of a point in a trihedron and the bulk motion of the trihedron itself over the surface gives an absolute trajectory of motion. Its sequential differentiation produces absolute speed and absolute acceleration without finding individual components, including the Coriolis acceleration. This could be used in point dynamics problems
Devising a technique and designing an apparatus for obtaining a multifunctional purpose film from intestinal raw materials
Authors: Pak Andrey , Оnishchenko Vyacheslav , Yancheva Maryna , Grynchenko Nataliya , Dromenko Olena , Pak Alina , Inzhyyants Samvel , Оnyshchenko Аrtem
Published: July 2023

The object of research is a technique for making glued intestinal films for multifunctional purposes, which are further strengthened by a stitching apparatus using thermal coagulation.
This paper substantiates the technical and technological solutions for obtaining glued intestinal films that can be used for the manufacture of sausage casings and as a multifunctional material in the food industry.
The technique and apparatus for stitching intestinal raw materials were developed; the structural features of the apparatus and its rational operation modes were determined. The proposed technique involves stitching by thermal coagulation of intestinal films from beef belly, which belong to intestinal and sausage waste. The possibility of stitching intestinal raw materials, different in size, thickness, and species, is achieved, which allows preserving a valuable animal resource and increasing the efficiency of glued intestinal films technology.
The breaking load of the seam obtained by thermal coagulation was investigated and the rational ranges of stitching duration were determined. The breaking load of the seam was defined, which is a series of points that were subjected to thermal coagulation; its nonlinear change with a change in the distance between points was established. It was found that the values of the breaking load of the seam for the range of distance between the points that create it, from 5 to 20 mm, respectively, lie in the range from 17.5 to 15.0 N/m. This satisfies the technological requirements for the strength of the seam of glued intestinal sausage casings.
The influence of the distance between the points that create a seam between the layers of intestinal raw materials on the outflow of the liquid filling fraction for sausages from the sausage casing was established; the height of the liquid fraction, at which the outflow was considered significant, was determined
Improving the quality of object classification in images by ensemble classifiers with stacking
Authors: Galchonkov Oleg , Baranov Oleksii , Babych Mykola , Kuvaieva Varvara , Babych Yuliia
Published: July 2023

The object of research is the process of classifying objects in images. The quality of classification refers to the ratio of correctly recognized objects to the number of images. One of the options for improving the quality of classification is to increase the depth of neural networks used. The main difficulties along the way are the difficulty of training such neural networks and a large amount of computing that makes it difficult to use them on conventional computers in real time. An alternative way to improve the quality of classification is to increase the width of the neural networks used, by constructing ensemble classifiers with staking. However, they require the use of classifiers at the first stage with different structured processing of input images, characterized by high quality classification and relatively low volume of calculations. The number of known such architectures is limited. Therefore, the problem arises of increasing the number of classifiers at the first stage of the ensemble classifier by modifying known architectures. It is proposed to use blocks of rotation of images at different angles relative to the center of the image. It is shown that as a result of structured image processing by the starting classifier, processing of rotated image leads to redistribution of errors on image set. This effect makes it possible to increase the number of classifiers in the first stage of the ensemble classifier. Numerical experiments have shown that adding two analogs of the MLP-Mixer algorithm to known configurations of ensemble classifiers reduced the error from 1 to 11 % when working with the CIFAR-10 dataset. Similarly, for CCT, the error reduction was between 2.1 and 10 %. In addition, it has been shown that increasing the MLP-Mixer configuration in width gives better results than increasing in depth. A prerequisite for the success of using the proposed approach in practice is the structured image processing by the starting classifier
Development of a new lightweight encryption algorithm
Authors: Kapalova Nursulu , Algazy Kunbolat , Haumen Armanbek
Published: July 2023

Lightweight encryption algorithms are considered a relatively new direction in the development of private key cryptography. This need arose as a result of the emergence of a large number of devices with little computing power and memory. Therefore, it became necessary to develop algorithms that can provide a sufficient level of security, with minimal use of resources. The paper presents a new lightweight LBC encryption algorithm. LBC is a 64–bit symmetric block algorithm. It supports 80 bit secret key. The number of rounds is 20. The algorithm has a Feistel network structure. The developed lightweight algorithm has a simple implementation scheme, and the transformations used in this algorithm have good cryptographic properties. This was verified by studying the cryptographic properties of the algorithm using the "avalanche effect" and statistical tests. The avalanche property was checked for each round when each bit of the source text was changed. Based on the work carried out, it was found that the proposed encryption algorithm is effective to ensure a good avalanche effect and the binary sequence obtained after encryption is close to random. Its security against linear and differential cryptanalysis is also evaluated. The results of the research revealed good cryptographic properties of this algorithm.  The algorithm will be used for devices with small hardware resources, in information and communication systems where confidential information circulates, and it is also extremely necessary to exchange information in a protected form in an operationally acceptable time
Effeciency assessment of IoT devices control with Teletraffic theory
Authors: Konyrova Madina , Kumyzbayeva Saule , Iliev Teodor , Chezhimbayeva Katipa
Published: July 2023

In connection with the global decarbonization program until 2050, the transition to clean green energy, the growth of the Internet of Things (IoT) number, and energy distribution and control across the load are being raised. The relevance of the work is confirmed that there has been significant growth of the industrial IoT for years, significantly changing the mechanism of industrial enterprise management programs. The object of the research is the IoT device control system for efficient energy distribution using a Queuing Theory, namely the Teletraffic Theory. The novelty of the work is that the Teletraffic Theory, which deals with the mathematical modeling and analysis of traffic patterns in communication networks, can be explicitly applied to IoT device control. The authors developed a mathematical model of IoT control using the Teletraffic Theory and, based on it, created a simulation model of a network router and a transition schedule in the "GPSS World" software. The obtained results of the work were 16 states and a balance equation in which all probabilities were found. Probabilities were used to calculate nodes and network characteristics. 100,000 requests from IoT devices coming to two routers were simulated. The study results showed that the first node's load is 63.2 % with an average processing time per transaction of M=1.436 sec., and the load of the second node is 32 % with M=0.914 sec. The created network router model worked with minimal losses during transactions. Accordingly, the IoT control system developed in this study has shown its effectiveness and is applicable for practical use in controlling IoT devices in Smart Grid. It is planned to research the possibility of using Teletraffic Theory in energy distribution control systems in Smart Grids
Revealing the effect of changing the operating parameters of a double hydrostatic bearing on its characteristics
Authors: Nazin Vladimir
Published: July 2023

The object of research is hydrostatic processes in sliding bearings with several layers of lubricant.
The task addressed was the influence of the structural and operational parameters of dual hydrostatic plain bearings on their static and dynamic characteristics. As a static characteristic, the bearing capacities of dual and conventional sleeve hydrostatic bearings were considered. When analyzing the dynamic characteristics, the amplitude-frequency characteristics were determined. They were obtained by calculation and as a result of experimental studies. When calculating the amplitude-frequency characteristics, the trajectory method was used. As external forces in the equations of motion of the rotor, hydrodynamic forces, the weight of the rotor, and its unbalance were considered.
Experimental determination of the trajectories of the rotor was carried out on a special bench.
It has been established that the bearing capacity of a double type bearing is approximately 1.75–1.85 times higher than the bearing capacity of a conventional sleeve bearing. The range of stable operation of the rotor on double-type bearings is approximately 1.4 times greater in comparison with the range of stable operation of the rotor on sleeve hydrostatic bearings. The vibration amplitudes in the resonance region for double bearings were approximately 1.5 times less than the rotor vibration amplitudes for sleeve bearings.
The results make it possible to recommend dual-type hydrostatic bearings for rotor bearings of nuclear power plants, in powerful aircraft engines with a gearbox, various types of pumps, and other power plant units. The derived theoretical dependences make it possible to carry out practical calculation of hydrostatic bearings of a double type
Design of a multilink system for calculating high-frequency processes in electric machines with mesh windings
Authors: Chumack Vadim , Kovalenko Mykhailo , Tymoshchuk Oksana , Stulishenko Andrii , Ihnatiuk Yevhen
Published: July 2023

This study considers the design of a multi-link high-frequency circuit for calculating defective and defect-free insulation of mesh windings in order to increase the operational reliability of general-purpose electric machines.
The object of research is mesh windings of electric machines.
The problem to be solved: increasing the operational reliability of electric machines with general-purpose mesh windings by analyzing and modeling defects.
The research results make it possible to model defects for the analysis of the state of insulation of electric machines with mesh windings. Special attention in the research was paid to induction motors with a worn-out resource, in particular, 4A80A4 UZ engine. The analysis includes phase-to-body capacitance, winding inductance, eddy current impedance, and winding impedance.
Under the WN mode, a decrease in the impedance of the winding section from 3 % to the short-circuit mode was simulated; accordingly, the resonance frequencies for each case of 3 % were determined – 73990 Hz, short-circuit – 74450 Hz, as well as the corresponding input impedances 8938.7 and 8082.5. The corresponding voltage resonances and current resonances were also determined. Appropriate results were also given for the WG scheme.
The results reported here relate to the design of the scheme and the research on the defects of the mesh winding. This contributes to the analysis of the state of insulation of mesh windings. The numerical data (resonant frequencies and input impedances) allow a better understanding of the behavior of windings in different states and degrees of defects.
Given the research findings, it is possible to better identify and analyze potential defects in mesh windings, which in turn contributes to increasing the reliability of electric machines.
The results of this study could be used in the field of diagnosis, service, and maintenance of electric machines with mesh windings
Creation of a methodology for determining the moisture diffusion coefficient within vacuum drying of fruits
Authors: Shingisov Azret , Alibekov Ravshanbek , Evlash Victoriia , Yerkebayeva Saparkul , Mailybayeva Elvira , Tastemirova Ukilim
Published: July 2023

As the drying zone deepens, outer surface layer of the product does not have time to be moistened, due to a small amount of moisture coming from the inside. It becomes dry, its temperature rises. The intensity of moisture transfer from the inner layers of the product depends on many parameters, including a moisture diffusion coefficient. The study aim is to create a methodology for determining the moisture diffusion coefficient within vacuum drying of fruits, by taking into account cracks, channels and capillaries formed in the dry layer of the product through the resistance coefficient to evaporation. The work essence consists in the determining of the moisture diffusion coefficient as a driving force, a difference between water activity and air humidity, by considering the resistance coefficient to evaporation, characterizing the effect of hydrodynamic resistance of the dried dry layer of the product. This approach was used to determine the moisture diffusion coefficient during vacuum drying of the Baiterek apple sort and the Zhazdyk pear sort of Kazakhstani selection. It was established that in the first period of drying the moisture diffusion coefficient decreases on average from 24,4∙10‒7 m2/s to 13,2∙10‒7 m2/s. The critical humidity for pear is 37.4 %, and for apple 35.1 %. As result of the formation of dry layer on the surface and subsequent layers, the moisture diffusion coefficient gradually decreases. In the second drying period, the moisture diffusion coefficient decreases from 5,42∙10-8 m2/s to 2,12∙10‒8 m2/s. The work practical significance is related with the application of the obtained results in the determination of the optimal drying regime with maximum preservation of the product original quality. The proposed methodology can be used in the practice to study the moisture diffusion coefficient within vacuum drying of fruits, by considering the product properties and the hygroscopic parameters of the drying matter
Directions for improving the status of startups in the technology transfer system
Authors: Davydiuk Oleksandr , Shvydka Tetiana , Ostapenko Iuliia , Yurovska Victoriia , Bytiak Oleksii , Senyk Yurii
Published: July 2023

The object of this paper is the study of the existing organizational forms of startups and the assessment of their compliance with the tasks of technology transfer. It has been established that existing approaches to understanding startups do not meet the needs of technology transfer. The feasibility of improving their legal status is substantiated. Directions for improving the form of a startup in the field of technology transfer have been formed. The following are proposed as the characteristic features of startups in the field of technology transfer: having the status of a business entity, meeting the requirements of a production and commercial entity, having technology or rights to technology, or performing work on its creation.
The need to change the provisions of the Framework Program for research and innovation "Horizon Europe" by introducing a separate category of startups in the field of technology transfer is substantiated. Their definition as autonomous small (medium-sized) enterprises at an early stage of their life cycle is proposed. As such, created as a division of a university or research institution, and carrying out production commercial activities and owning the rights to technology or aimed at new technologies or scaling existing business models based on them. A universal legal construction of a startup in the field of technology transfer is proposed, which can be used in national legislation. Under it, it is proposed to understand a business entity, created recently, with the purpose of carrying out production activities and obtaining profit, based on the realization of the appropriate right to technology.
The research is aimed at forming directions for improving the legal status of startups. The research results can be used in the formation of international normative acts, to regulate these relations and serve as a basis for further scientific research
Identifying the mechanism of the fatigue behavior of the composite shaft subjected to variable load
Authors: Al-Fahad Imad O. Bachi , Sharaf Hussein kadhim , Bachache Lina Nasseer , Bachache Nasseer Kassim
Published: July 2023

This paper presents a finite element analysis of a composite shaft under dynamic variable fatigue loading. The object of this study is the behavior of the fatigue life of a composite shaft under dynamic variable fatigue loading. The fatigue life of the shaft is then determined by analyzing the stress distribution and its effect on the material's fatigue strength. The investigation of fatigue behavior involves evaluating factors such as stress concentrations, fatigue crack initiation and propagation, and the cumulative damage caused by cyclic loading. The study explores the impact of biaxial loading on the shaft's fatigue performance and provides insights into its significance in predicting fatigue life and it is 10e7 cycles. Furthermore, a damage indicator is predicted to assess the accumulated damage and monitor the progression of fatigue-related degradation. This indicator serves as a valuable tool for predicting the remaining useful life of the composite shaft. The equivalent alternative stress is calculated to characterize the combined effect of different loading conditions on the fatigue life of the composite shaft. By quantifying the stress level and variations experienced by the structure, this parameter allows for a comprehensive assessment of the fatigue performance under variable loading scenarios 250 N. The findings of this research contribute to the understanding of fatigue behavior in composite shafts under dynamic variable fatigue loading. The insights gained from the fatigue life investigation, biaxiality indication, damage prediction, and equivalent alternative stress calculation can aid in optimizing design considerations, maintenance planning, and enhancing the reliability and durability of composite shafts in various engineering applications
Modelling of the composition of emulsion medicines and cosmetics stabilized by a biocomplex of surfactant substances based on rhamnolipids Pseudomonas sp. PS-17
Authors: Pelekh-Bondaruk Iryna , Revyatskyy Ivan , Bilous Svitlana
Published: July 2023

The aim. To study the biocomplex of surfactants based on rhamnolipids Pseudomonas sp. PS-17 (biocomplex PS) as an emulsifier and co-emulsifier by using the method of modelling the composition of emulsions for use in dermatology.

Materials and methods. The biocomplex PS is a biogenic surface-active complex synthesized by bacteria of the genus Pseudomonas, which is a viscous mass that includes rhamnolipids, which make up to 80 % of the biocomplex, as well as alginate and water. The methods of computer simulation of semi-automated selection of the composition of the oil phase and emulsifiers of medicinal or cosmetic emulsions developed in the MO Excel program were used. In modelling processes, the biocomplex PS was studied as an independent emulsifier in o/w type emulsions, as well as a co-emulsifier of this type of emulsions in combination with type II emulsifiers.

Results. The substantiation of the concentration of emulsifiers in the composition of emulsion medicinal and cosmetic products is mainly carried out based on experimental studies; therefore, it requires a long time and is expensive. To reduce the number of technological experiments in the development of emulsion products stabilized by a biocomplex of surfactants based on biocomplex PS, a method of computer simulation of the composition of emulsions in the MO Excel program was developed and used. A method based on the application of the hydrophilic-lipophilic balance system. Two examples of solving specific problems of choosing a complex emulsifier and the composition of the oil phase components of the emulsion product are given.

Conclusions: The use of a semi-automated modelling system provides a reasoned choice of the composition of the oil phase of the emulsion when using the PS biocomplex as an independent emulsifier or the choice of the ratio between the PS biocomplex and the type II emulsifier when using a complex emulsifier and allows rational experimental study
Compensation for moral damage caused as a result of illegal dismissal to an employee
Authors: Panchenko Olha
Published: July 2023

The employee is always the weaker party in labor relations, because it is the owner who determines the nature, regime and conditions of work, wages, the procedure for calculating fees and penalties. Taking into account the above, the Basic Law of Ukraine guarantees protection against illegal dismissal to all workers. In the case of abuse on the part of the owner, the employee, among other things, has the right to demand compensation for moral damage in the case when illegal dismissal led to his (her) suffering. The purpose of our article is to determine the specifics of compensation for moral damage, caused under the specified circumstances. In the course of the research, the conditions, under which moral damage at dismissal is deemed to have been caused by, were clarified. The grounds for the establishment of labor relations, which are an employment agreement, a contract as a specific form of an employment agreement, and a civil law contract, were defined. It is proved, that the fact of being in an employment relationship can be established extra judicially (by conducting negotiations with the employer or sending appeals simultaneously to the territorial bodies of the State Labor Service of Ukraine and the State Tax Service of Ukraine) or in court (on the basis of Article 315 of the Code of Civil Procedure Code of Ukraine). It is established, that moral suffering of the person, who was illegally dismissed, can be manifested in the victim's negative mental states (stress, depression, anxiety), which are reflected in his (her) consciousness. It is substantiated, that Ukrainian legislation does not directly list actions causing employee’s suffering; however, the Labor Code of Ukraine does not contain any restrictions or exclusions for compensation for moral damage in case of violation of the latter's labor rights. It is stated, that a three-month time limit applies to claims for moral damages in cases, provided for by labor legislation. However, in the case of exceeding it for valid reasons, the district, district in the city, city or city and district court may reinstate it
Authority of organs of constitutional jurisdiction on issues of international agreements: the experience of foreign states and Ukraine
Authors: Kaminska Nataliia
Published: July 2023

In the conditions of Ukraine's implementation of the status of a candidate for EU accession, post-war reconstruction, the Constitutional Court of Ukraine, along with other authorities, is entrusted with the important mission of affirming and implementing universal human values and international standards. The purpose of the article is a comparative analysis of the powers of the organs of constitutional jurisdiction on issues of international treaties, for which the following tasks must be solved: - to find out the state of regulation of the powers of organs of constitutional jurisdiction relating to international treaties in the Constitution of Ukraine and the constitutions of foreign states; - to generalize the trends and regularities of the constitutional and legal provision of powers of these organs in this direction; - to determine prospective directions of improvement of the constitutional and legal regulation of the powers of the ССU in the conditions of European integration. The methodological toolkit of the research consists of general scientific and special legal methods (dialectical, comparative legal, logical, epistemological, axiological, formal-legal, structural-functional, hermeneutic, statistical, prognostic, etc.), systemic, pluralistic, complex approaches, appropriate methodological principles

The constitutional and legal regulation of the powers of organs of constitutional jurisdiction is carried out in the constitutions, in most states there are special laws (constitutional or organic) on the constitutional court (council, tribunal, etc.), which regulate in detail the functions, powers of these organs and their members, the order of formation, procedures of activity etc. The main powers of these organs include, inter alia, consideration of issues of compliance of laws with ratified international treaties, provisions of other acts, issued by central state organs, with the constitution, ratified international treaties and laws (prior and subsequent constitutional control). The scope of competence of the organs of constitutional jurisdiction of foreign states and their effectiveness is much greater than that of the ССU, so it is advisable to modernize it. In particular, the experience of Slovakia and Poland is worth noting, especially in view of their accession to the EU, the expansion of the competence of constitutional jurisdiction organs and certain procedures of their activities, including constitutional control over international treaties
HÁBITOS ALIMENTARES E FATORES ASSOCIADOS EM ESTUDANTES DE 11 A 16 ANOS DO MUNICÍPIO DE CÁCERES-ESPANHA
Authors: Silva-Lima Silvia Bandeira da , Lima-Valério Flávia Évelin Bandeira , Bandeira-Lima Fellipe , Santos Amanda , Molena-Fernandes Carlos Alexandre , Fuentes García Juan Pedro , Ferreira-Lima Walcir
Published: July 2023

Objetivo: Esta pesquisa buscou analisar e comparar os hábitos alimentares em estudantes de 11 a 16 anos da cidade de Cáceres – Extremadura, Espanha. Método: O estudo caracteriza-se como transversal. Participaram da pesquisa, estudantes de ambos os sexos, de 11 a 16 anos de idade. Foram coletadas informações relativas a sexo, idade, estatura, massa corporal, perímetro da cintura, pressão arterial, hábitos alimentares e nível de atividade física. A análise estatística foi realizada por meio do programa SPSS 27.0. Resultados: A amostra foi composta por 162 meninas e 198 meninos. O consumo de frituras, refrigerantes e doces foram baixos, e o consumo de verduras e frutas não atingiram a quantidade mínima recomendada. As meninas acima do peso são 2,4 mais propensas a não consumir verduras e frutas com 0,7 mais chances que seus pares. A maioria da amostra exibe pressão arterial sistêmica normal, contudo, há uma grande proporção de estudantes com a pressão alterada. O nível de atividade física encontrado considerado baixo atingiu a maior parte dos avaliados, sendo que este comportamento pode ter contribuído para a ingestão insuficiente de verduras e frutas. Conclusão: De acordo com os resultados, os estudantes que apresentaram maiores dificuldades em manter uma dieta saudável são os mesmos que apresentam obesidade abdominal, excesso de peso, PA elevada e nível baixo de atividade física. Nesse cenário, a escola, por ser um ambiente de intenso convívio social se destaca como um local iminente para a promoção de ações educativas em saúde.
PERCEPÇÃO SUBJETIVA DE ESFORÇO E FREQUÊNCIA CARDÍACA NO TREINAMENTO INTERVALADO DE ALTA INTENSIDADE: BICICLETA ESTACIONÁRIA E HIIT BODY WORK
Authors: Silva-Lima Silvia Bandeira da , Gonçalves Beatriz Maria Lemes , Lima-Valério Flávia Évelin Bandeira , Ferreira-Lima Walcir
Published: July 2023

Objetivo: Comparar a reposta de percepção subjetiva de esforço (PSE) e a frequência cardíaca (FC) entre bicicleta estacionária (HBE) e o HIIT Body Work (HBW). Métodos: Foi analisada uma amostra de 14 indivíduos, de ambos os sexos, saudáveis e treinados. Idade de 28,6±6,0 e IMC 25,1±2,5. A amostra foi submetida a duas sessões de HIIT, cada uma com um tipo de exercício distinto: HIIT na bicicleta estacionária (HBE) e HIIT Body Work (HBW). Em ambas as sessões foram analisados os dados de percepção subjetiva de esforço e frequência cardíaca dos participantes. Resultados: A frequência cardíaca pico (FCpico) entre as duas sessões não apresentou diferença quando comparadas entre cada participante. A PSE foi maior no HBE segundo a análise do gráfico das unidades arbitrárias, no qual somente 1 dos 14 indivíduos teve o valor da escala de Borg maior no HBW. Conclusão: Concluímos que ambos os protocolos elevaram a FC mesmo não apresentando diferenças estatisticamente significativas, que pode estar relacionado com os diversos fatores que interferem na magnitude do aumento da FC de cada indivíduo. O HBE indicou ser mais exaustivo que o HBW, podendo não ser tão atrativo para algumas pessoas.
O “inédito-viável” de Jó: perguntas desde a pedagogia do oprimido
Authors: Cardoso Nancy
Published: July 2023

ResumoO desafio deste texto é articular o livro de Jó – em especial os capítulos 4, 5e 6 - com a pedagogia da Paulo Freire perguntando pelas situações-limite, osatos-limite e o inédito-viável. Contra o fatalismo das narrativas que justificama desigualdade e o sofrimento, tomar este mesmo sofrimento como matéria dosaber que liberta.
Por que falar sobre Jó hoje, século XXI?
Authors: Mesters Carlos
Published: July 2023

O livro de Jó apresenta uma nova experiência de Deus. Jó descobre que a suarebelião e luta contra o sofrimento não eram contra Deus, mas sim contra a imagem de Deus que falsificava a consciência das pessoas, destruía a convivência. Após uma apresentação sobre a estrutura histórica e teatral do livro, o artigo se dedica ao debate entre Jó e os amigos, entre uma visão tradicional de Deus e uma nova consciência que nasce do povo que sofre.
Os pobres no livro de Jó: uma voz subversiva e de contestação aos esquemas de retribuição
Authors: Lage Jovanir
Published: July 2023

O livro de Jó é um texto que propõe um conjunto de discussão para além de Israel e de seu povo. É um texto sempre atual e pujante, que questiona as doutrinas estabelecidas, colocando em destaque o tema da justiça, do sofrimento e da religião. Neste sentido, sua leitura deve ser inspiradora para uma teologia que pretende ir além da lógica e dos princípios estabelecidos. O presente estudo, exalta, portanto, uma teologia que se desenvolve na prática do sofrimento e tenta ressignificar a dor, sem o peso dos sacrifícios que mantém vivos os esquemas de retribuição em troca do silêncio e da conformação. O Jó que apresentamos aqui, se redescobre na relação com Deus
Monthly variation in the lipid composition and content of Pacific oysters, \(\textit{Crassostrea gigas}\), cultured in Van Don, Quang Ninh
Authors: LeThi Thanh Tra , Pham Quoc Long , Ngo Quang Dai , Lai Phuong Thao , Le Hong Nhung , Dang Thi Phuong Ly , Hoang Thi Bich , Tran Quoc Toan
Published: July 2023

We conduct a study to investigate the year-round fluctuation of lipid composition and content in Pacific oysters (Crassostrea gigas) cultured in Van Don, Quang Ninh, for the first time. Our results showed that the total lipid content of oysters ranged from 1% to 1.6%, with the highest levels observed during their pre-reproductive period (July and December). Polyunsaturated fatty acids were the most abundant type of lipids in oysters, ranging from 41.66% to 53.36%. We identified six lipid classes in Pacific oysters, with the three dominant classes being PoL, ST, and TG, which exhibited significant variation, with the highest variability observed in May and June and the lowest in July. The primary fatty acids in oyster lipids were 14:0, 16:0, 18:0, 18:1n-7, 20:4n-6, 20:5n-3, and 22:6n-3. In summary, our study provides novel insights into the lipid composition and content of Pacific oysters cultured in Van Don, Quang Ninh.The results demonstrate the temporal variability in lipid classes and fatty acid composition throughout the year, with the highest lipid content observed during the pre-reproductive period. These findings could contribute to better understanding the nutritional value of Pacific oysters and inform future aquaculture practices.
Dualizmy a pojęcie tego, co polityczne. Teoretyczne rozważania o politycznym znaczeniu myślenia binarnego
Authors:   Uniwersytet Opolski, Minkner Kamil
Published: July 2023

The article discusses the relationship between different kinds of thinking based on binary oppositions in the context of the political. The main assumption of the article is based on the claim that the notion of the political requires a reworking of different kinds of dualisms. The verification of the initial assumption has been carried out in two – opposing – directions. On the one hand, there are sphere dualisms of the public–private type, which in practice support the political/ non-political opposition. Such divisions turn out to be a source of erasure of important political problems of collective life. On the other hand, no conceptualisation of the political, understood as a fundamental political relationship, can do without dualistic assumptions. Different conceptions approach this issue differently. For example, the biopolitical theory of M. Hardt and A. Negri promotes the abolition of dualisms, but ultimately the dichotomous logic in it returns, although as a manifestation of inconsistency. The concept of the political that seems most realistic appears in the agonistic theory of Ch. Mouffe and E. Laclau, in which the political is immanently associated with fundamental antagonisms based on the us–them relationship.
Transgresywny charakter pisarstwa w polu teorii polityki
Authors:   Uniwersytet Opolski, Ozimek-Hanslik Magdalena
Published: July 2023

The thesis of this paper is the claim that the characteristic of writing in the field of theory of politics is its trangressiveness, i.e., exceeding certain norms. It means that it is arguing with scientificity pattern, i.e., formal rules that constitute the current criterion of scientificity. Adopting a theory of politics perspective, inspired by Pierre Bourdieu’s achievements, allows to show that definition of science is the stake in the game in the scientific field and the subfield of theory of politics. The aim of this paper is to show that the transgressive character of theory of politics writing is not unscientific, but it is rather a form of negotiations of the very norms of science by crossing the rigid patterns of writing, and its unconventional form is determined by its subject.
Dyskurs racji versus dyskurs emocji, czyli o szturmie na Kapitol w mediach publicznych Polski, Rosji i Niemiec
Authors:   Uniwersytet Śląski, Głuszek-Szafraniec Dagmara , Szostok-Nowacka Patrycja ,   Uniwersytet Śląski
Published: July 2023

The article presents the results of the analysis of media coverage in European countries on the events of January 2021 in the United States. The US Congress was deliberating to approve the presidential election results when a crowd of Donald Trump supporters burst into the building. The authors compared television news services of public stations in three countries: Poland, Russia, and Germany. The content analysis in its quantitative and qualitative dimensions, qualitative methods (Critical Discourse Analysis) as well as comparative analysis were used. The research results allowed the authors to indicate the dominant types of discourse in the public media in January 2021. The authors have shown the varied nature of the narratives used (discourse instrumentalization versus the chronicle style of narration), language (emotional versus informational), and the contextualization of media reports (embedding in historical, social, or cultural contexts).
Analysis of the effectiveness measures provided in small river valleys in terms of geo-ecological revitalisation of landscape features
Authors: Kurochkina Valentina , Smetanin Ivan
Published: July 2023

In the article are considered various classifications of watercourses (according to the degree of technogenic transformation, length and area of the catchment basin), which are objects that are part of various specially protected natural territories within urban areas. The qualitative differences between the concepts of "rehabilitation" and "recovery" are determined. The choice of natural territories (the valleys of the Chermyanka River and the Gorodnya River and adjacent territories) used in the study is justified. The geoecological condition was assessed (climatic, hydrographic, geological, hydrogeological conditions of territories, landscape and geomorphological features of objects, the existing state of soil cover, surface waters and bottom sediments were considered,engineering-geological and geoecological processes and phenomena were identified) of the sections of the small rivers Chermyanka and Gorodnya on the territory of natural parks of the city of Moscow, as well as an analysis of the quality of existing measures for the ecological rehabilitation of the section of the Gorodnya River valley complex from Borisovskaya Dam to Lublinskaya Street, which were carried out more than 15 years ago. The authors have identified a certain number of problems related to the functioning of natural complexes of small rivers and their degradation due to negative natural processes that do not depend on human activity (waterlogging, silting), associated with the consequences of human stay near rivers (pollution of water bodies and territories) and not quite correctly applied methods of ecological rehabilitation of territories, as well as inherited degraded state of the natural complex. The authors provide recommendations for improving the effectiveness of measures to ensure a satisfactory geoecological condition of small rivers and developed a unified methodological concept of geoecological rehabilitation of natural territories within urbanized territories.
EFFECT OF WAVY TUBE STRUCTURE ON THE COMPREHENSIVE PERFORMANCE OF SUPERCRITICAL CARBON DIOXIDE AND LEAD BISMUTH EUTECTIC COMPACT HEAT EXCHANGER
Authors: Shuhan Liu , Qingjiang Liu , Ji'an Liu , Xianliang Lei
Published: July 2023

In the combined system of lead-cooled fast reactor and supercritical carbon dioxide (S-CO2) Brayton cycle, the intermediate heat exchanger plays a key role in the whole power system. However, the existing heat exchanger cannot meet the trend of miniaturization of lead-cooled fast reactors. Considering the thermo-physical properties and heat transfer behaviors in both S-CO2 and liquid lead bismuth eutectic are significantly different, an asymmetric compact coupled heat exchanger learning from the Honeycomb structure is proposed. Then the effect of the Reynolds number on the coupling heat transfer is discussed. When the Reynolds number of the cold side was changed from 57600 to 145000, the heat transfer coefficient of the heat exchanger increases by 79%, but when the Reynolds number on the hot side is changed from 29600 to 118000, the heat transfer coefficient only increases by 4.6%. To enhance the heat transfer and reduced thermal resistance on the S-CO2 side, a wavy channel was used. The results showed that the wavy channels could significantly improve the field-synergy angle. In the smooth pipe, the averaged field-synergy angle is 88.7°, while in the wavy channel, the averaged field-synergy angle becomes 84.1° at α = 1.5. With the increase of wavy amplitude in S-CO2 channel, the heat transfer coefficient and the friction factor increased, but the comprehensive heat transfer coefficient is in non-monotonic variation. The overall heat transfer coefficient of the wavy channel is 1.56-1.81 times than that of the straight channel in the range of ReSCO2 = 86700 ~ 145000.
Design criteria for upstream raised tailings storage facilities
Authors: Wates J A
Published: July 2023

For more than 100 years upstreaming has been the dominant raising method for tailings storage facilities in Southern Africa. However, there is a growing view worldwide that upstreaming is inherently less safe than centreline or downstream raising of tailings storage facilities. Considering that more than 90% of the 250 plus operational tailings storing facilities in Southern Africa are upstream raised and cannot economically be converted to, or replaced by, downstream raised facilities, the arguments for and against upstreaming were examined in this study. It was found that no compelling reason exists to ban upstreaming in Southern Africa, provided that failure mechanisms are thoroughly considered to prevent serious design omissions. The ALARP (as low as reasonably practicable) approach is introduced as a practical method to deal with the risk of failure, and its hierarchical application is illustrated.
Atypical Catathrenia Mimicking Sleep Choking Sound of Obstructive Sleep Apnea
Authors: Ji Ki-Hwan
Published: July 2023

Catathrenia is a rare type of sleep-related breathing disorder with benign course and generally does not require treatment. However, the psychological burden on patients and bed partners is not light. In most cases, due to the sound characteristic of identifiable harmonics, it can be easily diagnosed; however, in some cases, it has non-typical sounds, and polysomnography is essential to diagnose. Here, I report a middle-aged woman with choking sounds like an obstructive sleep apnea patient during sleep, with typical polysomnography features of catathrenia.