bluuebunny/crossref_metadata_2025 huggingface dataset:
The effect of alkalization and esterification treatment on mechanical properties of water hyacinth fiber reinforced epoxy-resin composite
Authors: Sulardjaka Sulardjaka , Iskandar Norman , Manik Parlindungan , Nurseto Dwi Satrio
Published: March 2023

This research investigates the effect of fiber pre-treatment on the mechanical and physical properties of unidirectional water hyacinth (WH) fiber reinforced epoxy resin composites. The water hyacinth fibers have been produced by mechanical processing. The 50–70 cm length of WH stems are brushed with an iron brush to mechanically extract the strands. The dry fibers then were pre-treated by alkalization and esterification. The alkalization ha ve been conducted by immersing the WH fibers on 2 %, 5 % and 10 % NaOH solution for 24 h. The esterification of WH fibers have been done using acetate anhydride. The composite with 15 %, 25 % and 35 % of unidirectional WH fibers was made by hand lay-up. After hand lay up process the WH composites then compacting with pressure compaction 5 MPa. Tensile test and was done based on ASTM D3039. The density of composites was tested based on Archimedes rule. Surface contaminants have been eliminated by fiber treatment. The NaOH treatment eliminated the surface's wax and cuticle. The surface of fibers treated with 10 % NaOH was cleaner than those treated with 5 % NaOH. Fiber treatment has the effect of reducing fiber thickness.The tensile test results of the composite reinforced with WH fiber with NaOH treated and acetate anhydride show that the tensile strength of untreated WH fiber reinforced epoxy resin composites increased with the increase of % WH fiber. The tensile strength results that acetate anhydride treatment of WH fiber reinforced epoxy resin composites showed increased WH fiber increase the tensile strength of composite. The highest tensile strength of epoxy resin reinforced with WH fiber with acetate anhydride treatment
Development of a vortex wind device
Authors: Koshumbaev Marat , Issenov Sultanbek , Iskakov Ruslan , Bulatbayeva Yuliya
Published: March 2023

The relevance of the research is related to the development of a new type of renewable energy source ‒ a vortex wind device with a vertical axis of rotation without wind guidance mechanisms. The main purpose of the study is to develop a vortex wind turbine using mathematical modeling of vortex motion and laboratory experiments on the model. The object of the study is a vortex wind device consisting of a concentrator with curved channels, inside which there is a wind wheel, and a vertical pipe mounted on the concentrator.
The calculations are based on the method of modeling large vortices with the solution of averaged Navier-Stokes equations. As a result of the research, the velocity distribution in the concentrator, inside the structure and the discharge pipe were obtained. The computational experiment shows that the narrowing channels of the concentrator create a stable vortex motion inside the structure and the vertical pipe. The methods used for calculating turbulent flows allow to study aerodynamic processes in wind turbines with a vortex effect. The absence of a rotary mechanism reduces the risks of breakdowns of rotational elements due to their absence. The concentrator perceives the wind flow from any side and creates a vortex motion inside itself due to curved channels. The outlet openings of the curved channels are directed to the blades of the wind wheel, which increases the maximum transfer of wind flow energy to the blades of the wind wheel. The vortex motion inside the concentrator creates a steady rotation of the wind wheel. An additional important point is the removal of the exhaust air flow from the vortex wind device. Existing wind farms have wind guidance mechanisms, which complicates the design, a stable rotation mode of the wind wheel is not created. All these problems of operating stations can be solved with the help of a vortex wind device
Determining the qualitative parameters of powder from the stalks of garden purslane (Portulaca oleracea L.) and its application in the production of functional bakery products
Authors: Gurbanov Nusrat , Yusifova Mehriban , Tagiyev Mardan , Nasrullayeva Gunash , Kazimova İlhama
Published: March 2023

Bread and bakery products are the most common food products that have a significant impact on the biological and energy value of the human diet.
The presence of proteins, fats, vitamins, mineral components, and dietary fiber in them depends on the assortment, recipe, and cooking technology.
The use of dried purslane in powder form as a semi-finished product (raw material and additive) and the development of various technologies with it at the same time can provide the population with a wide range of food products in the diet.
The aim of this work is to determine the quality indicators of the powder from the stems of garden purslane (Portulaca oleracea L.) and its application in the production of functional bakery products. This will make it possible to use them as a protein-carbohydrate-mineral and multicomponent fortifier to obtain functional bakery products.
This paper reports the results of studying in a laboratory the powder from the stalks of garden purslane (PP), growing under the conditions of the Absheron district of Baku, Azerbaijan. Its general chemical and mineral composition, some physical-mechanical and microbiological indicators and safety indicators of PP have been studied, the doses of its introduction into yeast dough have been substantiated. By organoleptic and physical-chemical methods, the technological indicators of the quality of yeast dough and finished products with PP powder for the production of functional bakery products were determined.
Powder from garden purslane stems was used in the production of functional bakery products, and a recipe and technological scheme for the production of "Health" buns using purslane powder were devised
Assessment of plant disease detection by deep learning
Authors: Alpyssov Akan , Uzakkyzy Nurgul , Talgatbek Ayazbaev , Moldasheva Raushan , Bekmagambetova Gulmira , Yessekeyeva Mnyaura , Kenzhaliev Dossym , Yerzhan Assel , Tolstoy Ailanysh
Published: March 2023

Plant disease and pest detection machines were originally used in agriculture and have, to some extent, replaced traditional visual identification. Plant diseases and pests are important determinants of plant productivity and quality. Plant diseases and pests can be identified using digital image processing. According to the difference in the structure of the network, this study presents research on the detection of plant diseases and pests based on three aspects of the classification network, detection network, and segmentation network in recent years, and summarizes the advantages and disadvantages of each method. A common data set is introduced and the results of existing studies are compared. This study discusses possible problems in the practical application of plant disease and pest detection based on deep learning.
Conventional image processing algorithms or manual descriptive design and classifiers are often used for traditional computer vision-based plant disease and pest detection. This method usually uses various characteristics of plant diseases and pests to create an image layout and selects a useful light source and shooting angle to produce evenly lit images.
The purpose of this work is to identify a group of pests and diseases of domestic and garden plants using a mobile application and display the final result on the screen of a mobile device. In this work, data from 38 different classes were used, including diseased and healthy leaf images of 13 plants from plantVillage. In the experiment, Inception v3 tends to consistently improve accuracy with an increasing number of epochs with no sign of overfitting and performance degradation. Keras with Theano backend used to teach architectures
Analyzing the use of expert systems in improving the quality of decision-making
Authors: Mohammed Al-Mafrji Ahmad Abdullah , Hamodi Yaser Issam , Hassn Sudad Gharib , Mohammed Ahmed Burhan
Published: March 2023

The success of institutions is in providing good services to customers through making various and strategic decisions as quickly and accurately as possible. Expert systems are important in making strategic decisions by improving the quality of decision-making. An expert system is an information system that relies on systems based on knowledge bases. It may also contain a knowledge base in a particular field and advanced programming methods that make a computer capable of thinking, deducing, and providing advice and expertise.
This research aims to improve the period of time in decision making by using multiple experts systems and decision support system. The new system is implemented in MATLAB.
For analyzing the proposed system, the data is collected by the questionnaire method and distributing 70 questionnaires to managers, heads of departments, employees, and those responsible for making various decisions in the institution under study. The valid questionnaires were 63. A questionnaire and the data were analyzed using the statistical program (SPSS). Based on the obtained data, the linguistic variables were created for the time period of the data, and the skills of the decision-maker as inputs for the proposed expert system, and a stage was added to the stages of the proposed expert system to diagnose the problem and set the goal to obtain the correct strategic decision. To obtain this advantage, let’s use expert systems compared to traditional methods of decision-making
The effect of Blockchain technology as a moderator on the relationship between big data and the risk of financial disclosure (analytical study in the Egyptian and Iraqi stock exchange)
Authors: Abdel Sabour Khaled , Al-Waeli Abbas
Published: March 2023

This paper aims to explain the impact of Blockchain Technology as a moderator in the relationship between Big Data and The Risk of Financial Disclosure to address the Risk of Financial Disclosure. Therefore, this technique was used to reduce the risks of disclosing financial and accounting data for various companies. The estimated population size of accounting information systems and information technology professionals is more than 300 in the Egyptian and Iraqi Stock Exchange. The results indicate that all the direct hypotheses that reflect the relation between Big Data characteristics and FDR are supported which is less than 0.05. There is no impact of Volume on Financial Disclosure Risk with a p-value=0.074.  the indirect effect of Blockchain Technology on the relationship between (VEL, VER and VOL) and Financial Disclosure Risk was significant with a p-value of 0.048,0.024,0.001 respectively, which is less than 0.05 and does not support the relationship between VAR and Financial Disclosure Risk a p-value of 0.735. Then, we recommend state-of-the-art studies on the use of blockchain for big data applications in different vertical domains such as smart cities, Financial transactions, smart transportation, and smart bank accounts. For a better understanding, some representative blockchain-big data projects are also presented and analysed. Finally, challenges and future directions are discussed to further drive research in the countries of the Middle East. This paper presents the novel solutions associated with Big Data with Financial Disclosure Risks that can be addressed by Blockchain technology. As Well as present the motivations behind the use of blockchain for big data. We show that blockchain has great potential for facilitating big data analytics such as control of dirty data, enhanced security and transparency, enhanced quality of data, the management of data sharing and, Addressing risk financial disclosure
The use of technologies for stabilizing the electrophysical characteristics of sensor structures used in the development and manufacture of measuring transducers
Authors: Kabdoldina Assem , Ualiyev Zhomart , Ibrayev Sayat , Jamalov Nutpulla , Ibrayeva Arman , Tuleshov Yerkebulan , Analiyeva Azhar , Arinova Dinara , Khikmetov Askar , Uaissov Bolat
Published: March 2023

The object of the study is the design, manufacturing technology and methods of stabilizing the electrophysical characteristics of measuring transducers. The problem solved in the research is the creation of methods and design and technological solutions to ensure stability used in the development and manufacture of measuring transducers. As a result of the conducted research, designs and technologies for manufacturing and stabilizing the electrophysical characteristics of measuring transducers were developed. The features of the developed designs of measuring transducers are increased in comparison with the known time stability with a basic error of no more than 0.1 %/year. Technologies for stabilizing the parameters of measuring transducers, in contrast to the known ones, differ in their versatility, since most elastic elements that perceive mechanical magnitude are membranes and beams, on which thermocompensating films are easily applied. The stabilization of the parameters of the entire measuring transducer, unlike the known ones, is carried out after the removal of internal mechanical stresses of each element and part of the measuring transducer through the integrated use of current and vibration dynamic loads. Thus, the use of complex compensation due to the application of a new method of compensation of internal mechanical stresses in the structure, based on the use of multilayer film compositions formed on sensitive elements, followed by thermal and vibration stabilization of measuring transducers. In addition, reducing the measurement error and increasing the time and parametric stability of the measuring transducers is achieved through the use of specialized heat treatment modes, training resonant vibration and current loads. When developing structures and stabilization methods, previously developed engineering mathematical models were used, including constructive, informational, dimensional, technological and circuit engineering. At the same time, depending on the adopted design and the technology used, engineering models were modified by including known coefficients and dependencies. This method has significantly reduced the cost and complexity of development
Technology of obtaining and chemical profiles of dry extracts from leaves of prospective species of the hawthorn genus
Authors: Sydora Natalia , Yakovenko Volodymyr , Ochkur Oleksandr , Rudnyk Anna , Honcharov Oleksandr , Zuikina Svetlana , Romas Kateryna , Marchenko Mykhailo
Published: March 2023

The aim of the work was to develop a technology for obtaining dry extracts from leaves of non-pharmacopoeia species of hawthorn and establishing their chemical profiles.
Materials and methods. Leaves of Crataegus mollis Sarg., Crataegus submollis Sarg. and Crataegus arnoldiana Sarg., used to obtain the dry extracts, were harvested in the Botanical Garden of the National University named after M. N. Karazina in August 2021. To determine the chemical profiles of the obtained dry extracts, the spectrophotometric method and the high-performance liquid chromatography (HPLC) method were used.
Results. A technological scheme for obtaining dry extracts of hawthorn leaves has been developed. The content of flavonoids and hydroxycinnamic acids in dry extracts of the leaves of C. mollis Sarg., C. submollis Sarg. and C. arnoldiana Sarg. was determined. The content of free amino acids in extracts ranges from 0.70 % to 0.99 %. The content of flavonoids ranged from 7.25 %±0.04 to 8.43 %±0.01, of hydroxycinnamic acids - from 2.35 %±0.02 to 2.85 %±0.03. Rutin, kaempferol-3-O-glycoside, epicatechin and chlorogenic acid were identified in all extracts by the HPLC method. In dry leaf extracts of C. arnoldiana Sarg. and C. mollis identified p-coumaric acid; C. arnoldiana Sarg. – quercetin; C. arnoldiana Sarg. and C. submollis Sarg. – ferulic acid; C. submollis Sarg. and C. mollis Sarg. – quercetin-3-O-rhamnoside.
Conclusions. Dry leaf extracts of C. mollis Sarg., C. submollis Sarg. and C. arnoldiana Sarg. were obtained. For the first time, the content of flavonoids and hydroxycinnamic acids in the extracts was determined by HPLC. It was established that the chemical profile of the obtained extracts is formed by rutin, chlorogenic acid and kaempferol-3-O-glycoside, which can be used in further standardization of these substances. In addition, a comparative study of the amino acid composition of the obtained extracts was carried out for the first time
METHOD AND SOFTWARE COMPONENT MODEL FOR SKIN DISEASE DIAGNOSIS
Authors: Lovkin V. M. , Subbotin S. A. , Oliinyk A. O. , Myronenko N. V.
Published: March 2023

Context. The problem of skin disease diagnosis was investigated in the paper. Its actuality is caused by the necessity of automation of at least advisory medical decision making. Such decisions are made in telemedicine, for instance, when skin disease diagnostics is performed under specific conditions. These conditions are specified by situations when data for analysis are collected but a qualified doctor has no possibility to process the data and to make a diagnosis decision based on it. The object of the study is a process of skin disease diagnosis.

Objective. The objective of the study is to develop a skin disease diagnosis method to automate making of advisory medical diagnosis decisions and to increase efficiency of such decisions.

Method. The skin disease diagnosis method was proposed in the work. This method applies the modified ResNet50 model. It was proposed to add layers to the ResNet50 model and to train it using transfer learning and fine-tuning techniques. The method also defines image processing in particular through the change of its resolution and uses oversampling technique to prepare a dataset for model training.

Results. Experimental investigation of the proposed method was performed using the HAM10000 dataset which contains images of skin diseases. The images were collected using dermatoscopy method. The dataset contains observations for 7 different skin diseases. The proposed method is characterized by the accuracy of 96.31% on this dataset. It is improved accuracy in comparison with the existing neural network models. Software component model was created to give a possibility to integrate the proposed method into a medical diagnosis system.

Conclusions. The obtained results of the investigation suggest application of the proposed skin disease method in medical diagnostic system to make advisory decisions by the system and to support making final decisions by a doctor.
PARAMETER-DRIVEN GENERATION OF EVALUATION PROGRAM FOR A NEUROEVOLUTION ALGORITHM ON A BINARY MULTIPLEXER EXAMPLE
Authors: Doroshenko A. Yu. , Achour I. Z. , Yatsenko O. A.
Published: March 2023

Context. The problem of automated development of evaluation programs for the neuroevolution of augmenting topologies. Neuroevolution algorithms apply mechanisms of mutation, recombination, and selection to find neural networks with behavior that satisfies the conditions of a certain formally defined problem. An example of such a problem is finding a neural network that implements a certain digital logic.

Objective. The goal of the work is the automated design and generation of an evaluation program for a sample neuroevolution problem (binary multiplexer).

Method. The methods and tools of Glushkov’s algebra of algorithms and hyperscheme algebra are applied for the parameterdriven generation of a neuroevolution evaluation program for a binary multiplexer. Glushkov’s algebra is the basis of the algorithmic language intended for multilevel structural design and documentation of sequential and parallel algorithms and programs in a form close to a natural language. Hyperschemes are high-level parameterized specifications intended for solving a certain class of problems. Setting parameter values and subsequent interpretation of hyperschemes allows obtaining algorithms adapted to specific conditions of their use.

Results. The facilities of hyperschemes were implemented in the developed integrated toolkit for the automated design and synthesis of programs. Based on algorithm schemes, the system generates programs in a target programming language. The advantage of the system is the possibility of describing algorithm schemes in a natural-linguistic form. An experiment was conducted consisting in the execution of the generated program for the problem of evaluating a binary multiplexer on a distributed cloud platform. The multiplexer example is included in SharpNEAT, an open-source framework that implements the genetic neuroevolution algorithm NEAT for the .NET platform. The parallel distributed implementation of the SharpNEAT was proposed in the previous work of the authors.

Conclusions. The conducted experiments demonstrated the possibility of the developed distributed system to perform evaluations on 64 cloud clients-executors and obtain an increase in 60–100% of the maximum capabilities of a single-processor local implementation.
AVALIAÇÃO DA DESTINAÇÃO FINAL DOS RESÍDUOS DE SERVIÇO DE SAÚDE EM UM MUNICÍPIO NO NORTE DO ESTADO DO MARANHÃO
Authors: Barbosa Barbara Chaves Aguiar , Viana Alícia Ferques , Celedonio Danilo B. , Barroso Daniel Fernandes Rodrigues , Marinho Glória Maria
Published: March 2023

O objetivo deste trabalho foi verificar a destinação final dos resíduos de serviço de saúde (RSS) em um município localizado no Norte do Maranhão. A metodologia delineou-se com buscas bibliográficas em bases de dados, referente à gestão dos resíduos da saúde e sua disposição final e em visitas a duas Unidades Básicas de Saúde - UBS, Vigilância Sanitária do município estudado e Central de Medicamentos e Secretária municipal de Meio Ambiente. Os resultados indicaram que as UBS não possuem um PGRSS, alguns fazem a segregação gravimétrica dos resíduos, no entanto não têm convênio com nenhuma empresa especializada, o que conduz à disposição inadequada dos resíduos em área de lixão afastado da cidade. A falta de destinação ambientalmente adequada dos resíduos pode desencadear impactos negativos ao meio ambiente e à saúde humana. A negligência dos órgãos fiscalizadores evidencia a ausência do cumprimento das legislações vigentes o que implica em uma gestão ambiental deficiente.
La importancia de la Educación Física en contextos de inclusión de personas con discapacidad
Authors: Mendoza Muñoz Ricardo Alonso
Published: March 2023

Hoy en día, en el ámbito educativo, se escuchan de manera recurrente términos como inclusión, diversidad, discapacidad, accesibilidad, estrategias de enseñanza-aprendizaje, entre otros. Durante la última década los gobiernos y el sistema educativo nacional han hecho notables esfuerzos para lograr una mejor atención educativa con criterios de equidad, igualdad y participación, que permitan a personas con discapacidad o necesidades educativas especiales disfrutar de una educación más adaptada a sus capacidades, sin ser excluidas y/o segregadas.

En este proceso, las Instituciones de Educación Superior [IES], entre ellas las universidades, juegan un rol muy importante, ya que son los lugares donde se forman ética y académicamente los profesionales del campo de la educación y que más adelante van a desempeñarse como docentes en diferentes niveles como en primaria, secundaria e incluso la misma educación superior, siendo determinantes a través de su labor para lograr un verdadero y favorable proceso educativo desde el área del saber o formación que les corresponda orientar.

Lo que se pretende por medio de este artículo es resaltar la importancia que tiene dentro de la formación profesional del Licenciado en Educación Física de la Universidad CESMAG, la realización de prácticas pedagógicas en población con discapacidad, con el fn de sensibilizar y lograr que se conviertan en agentes que favorezcan la inclusión en los contextos donde se desenvuelvan.

Lo que se pretende por medio de este artículo es resaltar la importancia de incluir las prácticas pedagógicas en población con discapacidad dentro de la formación profesional del Licenciado en Educación Física de la Universidad CESMAG, con el fin de sensibilizar y lograr que se convierta en agente que favorezca la inclusión en los contextos donde se desenvuelva.
Przyjaciele, „synkowie” czy tylko podkomendni? Próba analizy więzi Józefa Piłsudskiego ze współpracownikami
Authors: Piotrowski Jacek
Published: March 2023

Biographers usually focus on the analysis of a person’s life fortunes. According to recognised sociologists, philosophers and scientists – experts on history psychology, rarely do they analyse a selected aspect of interpersonal relations based on available historical resources. What was the essence of the bond between Piłsudski and his close companions? What was characteristic for those relations and what were their determining aspects in various periods of Piłsudski’s activity? Those are the questions that are being answered in this article. The author undertakes to reconstruct the evolution of relations between Józef Piłsudski and his companions based on numerous memoirs by his associates. His assets in competition for the leadership position, his features of character and even physical appearance are being analyzed. Objective factors, like war success, which helped him reach for authoritarian rules in Poland are pointed out. Some important questions are being answered: Who were the people that recognized his authority? Who was able to oppose him? A strong sense of historic mission to rebuild the country within Piłsudski’s circle, originating from common values shaped by national culture, has been pointed out. It is characteristic that despite the changes Piłsudski’s relations underwent, they consistently preserved the commanding character between the leader and his agents. These were formed by numerous factors, but undoubtedly the strong will of Piłsudski remained crucial. He was extremely successful in consistent building relations based on his own authority, which still resonates among his countrymen.
Drogowskaz na rozdrożu. Życie i myśl Józefa Karola Potockiego (1854–1898)
Authors: Tomasiewicz Jarosław
Published: March 2023

Józef Karol Potocki vel Marian Bohusz (1854–1898) was very important and influential although forgotten thinker. His ideas of evolutionary socialism and ethnic nationalism were fundamental for both main Polish political formations of the 1st half of 20th century: Polish Socialist Party (and broader Piłsudski’s camp) and National Democracy. The very fundament of Potocki’s world-view was idea of any “cosmic energy” as prime mover of evolution. The evolution leads towards broader and broader, deeper and deeper integration, towards more complex societies. In opinion of Potocki socialism (as a system based on cooperation) would be natural result of this evolution. Historical and cultural heritage transform society into nation – community bonded by biological ancestry, economic cooperation and culture. This ethnic meaning of the Polish nation excluded Jewish minority. On the other hand, the real nation are the working people (especially peasants), not ruling classes. Nation needs an independent state as instrument of autonomous development, therefore Potocki was bitterly anti-Russian. Potocki tried to propagate the idea of a common front of socialists and nationalists for independence. Polarization of Polish public opinion in the end of 19th century made his efforts unsuccessful.
W poszukiwaniu koncepcji politycznej „Dziś i Jutro”. List Witolda Bieńkowskiego do Bolesława Piaseckiego z 1947 r.
Authors: Orzełek Ariel
Published: March 2023

Witold Bieńkowski (1906–1965) was a Polish Catholic activist, entangled in the dilemmas of the era in which he lived. Before the war, he was associated with Catholic youth movements, during the war, he was an activist of the Front for the Rebirth of Poland. Ge devotedly worked to save Jews in the Council to Aid Jews „Żegota” and in the Jewish section of the Department of Internal Affairs of the Government Delegation for Poland. However, as early as 1944 he was accused of the murder of Ludwik Widerszal and Jerzy Makowiecki, officials from the Information and Propaganda Bureau of the Home Army Headquarters. On the eve of the Warsaw Uprising, he found himself in territories occupied by the Soviet army, where he attempted to act as a government representative for the lands free from Germany. He then made contact with Bolesław Piasecki, but soon he was arrested by the Soviets, with whom he probably held secret political talks. Released by the underground branch in May 1945, at the turn of summer and autumn 1945 legalized thanks to Piasecki, soon assuming the position of editor-in-chief of the „Today and Tomorrow” magazine, and two years later he was appointed a member of the Legislative Sejm. He was a spokesman for the recognition of People’s Poland not only for geopolitical but also ideological reasons, proclaiming the need for radical socio-economic transformations, encouraging Catholics to support them. To gain the authority of this concept, he demanded that the communists should represent Catholics politically, but not in the form of a traditional Christian Democrat party, but with time he came to the conclusion that an informal political environment, even the most influential, meant less than a legal party. Therefore, he became a spokesman for the radical left-wing Catholic party, and when this vision failed, he persuaded Piasecki to formalize their movement ideologically and politically. This is documented by the quoted letter from Bieńkowski to the leader of „Today and Tomorrow” of December 1947, in which he noted that the environment may disintegrate if it is not bound by a specific form serving to implement the program. Bieńkowski quarreled with Piasecki in 1948, later becoming the press clerk of Primate Stefan Wyszyński, and briefly associated with the Christian Social Association. He died, forgotten in 1965, charged with suspicions of the murder of BIP officials. Regardless of this, Piasecki largely took up his concept, creating the „PAX” Association, grading, as Bieńkowski wanted, his leadership and giving it a clear, ambitious program of „overcoming the winner” through „multi-worldview socialism.”
Leon Weintraub ocalały dla pojednania
Authors: Ptaszyński Radosław
Published: March 2023

The group of Auschwitz survivors is numerous and rapidly shrinking. However, the accounts (could use: biographies, memoirs, recollections, stories, etc.) of those who experienced it are remarkable and still worthy of study. Moreover, testimonies from the time of the Annihilation (or Holocaust) – a message with a great weight of emotion and a particular feature of the great history, make the material collected in this way can serve as an invaluable contribution to expanding knowledge and analysis for future generations. Naturally, the educational issue is also important, although the focus will be on the cognitive role. The purpose of this article is to demonstrate the fate of the life of an outstanding physician, a Polish Jew from Lodz, Leon Weintraub, who “started” his life anew three times – at the time of his birth in 1926, his liberation from the Nazi camps, and his expulsion from the country as part of the anti-Semitic campaign of March 1968. It seems that the study of the fate of an individual’s life under totalitarian systems, using the oral history method and confronting other sources, makes it possible to create a biographical sketch that is not just a collection of dry facts but enriched with elements of personal emotions, sensitivities, and feelings.
De la guerra al festival: análisis de las metáforas empleadas en la cobertura de la Copa Mundial de Fútbol 2018 por Marca y Sovetsky Sport
Authors: Mukhortikova Tatiana
Published: March 2023

Este estudio analiza las metáforas extraídas de los textos informativos, las crónicas y los reportajes dedicadas a la Copa Mundial de Fútbol 2018, publicadas en dos periódicos deportivos y editados en dos países distintos en dos idiomas diferentes: español y ruso, desde el 14 de junio hasta el 15 de julio 2018. Partimos de la propuesta metodológica del análisis de la metáfora periodística fundamentada en los postulados pragmáticos (Grice 1996; Teruel 1995; 1997) y cognitivos (Lakoff & Johnson 1980), detallados en el marco teórico. Suponemos la presencia de dos tipos de metáforas: metáforas culturales, propias de una cultura y un idioma, y metáforas universales presentes en ambos casos. Este estudio tiene un enfoque comparativo en perspectiva sincrónica y permite contrastar las asociaciones en dos idiomas procedentes de distintas familias lingüísticas para establecer similitudes y diferencias.
(Re)discutindo a emergência de gêneros na web
Authors: Lima-Neto Vicente de Lima-Neto
Published: March 2023

O ser humano, desde o Paleolítico, busca todos os recursos semióticos possíveis para ser compreendido. Em todas as tentativas de comunicação, utilizamos gêneros. Em tempos de intensas interações na internet é comum que os usuários se utilizem criativamente de recursos disponíveis em plataformas digitais para uma comunicação eficaz, atendendo a diferentes propósitos comunicativos. Essas ações podem ser a gênese de alguns gêneros, que passam por diferentes estágios de formação, em busca de estabilização. Este trabalho objetiva sugerir critérios que balizam o estágio de emergência de gêneros na web. Metodologicamente selecionamentos um exemplário de três memes que circularam no Facebook e uma postagem nos stories do Instagram, todos de perfis públicos, cujos critérios foram o de terem mais de cem compartilhamentos, curtições, comentários ou visualizações. A análise se pauta à luz da abordagem sociorretórica de gêneros (Miller, 2009; Bazerman, 2021), atrelada à análise dialógica do discurso (Bakhtin, 2016; Volóchinov, 2018). Os resultados apontam que é possível caracterizar a emergência como um estágio de um gênero em direção à sua estandardização, cujos traços são acabamento, falta de consenso identitário e remix.
Effects of resistance training on consecutive and non-consecutive days on hormonal, neuromuscular and morphological responses in recreationally trained men
Authors: Lopes Charles Ricardo , Brigatto Felipe Alves , Camargo Júlio Benvenutti Bueno de , Germano Moisés Diego , Marchetti Paulo Henrique , Aoki Marcelo Saldanha , Politano Hugo
Published: March 2023

abstract The purpose of the present study was to investigate the effect of two recovery periods between consecutive and non-consecutive days in strength training sessions on hormonal, neuromuscular and morphological variables in recreationally trained men. Nineteen young men completed the study and were randomly divided into two groups: 24R, 24-hour recovery group (n = nine) and 72R, 72-hour recovery group (n = ten). The strength training program (RT) lasted six weeks with two serial routines, with a weekly frequency of four times. The saliva sample was collected once a week in the morning to determine salivary testosterone. The 1RM, jump against movement and body composition tests were performed in the pre- and post-training periods. As for salivary testosterone, there was no significant effect with respect to time and between groups. Both groups improved maximal strength in terms of intervention time in the barbell bench press and in the leg press 45º, not differing between groups and body composition showed significant interaction in time to body fat percentage ∆% = -14.6 ± 10.0 (24R) and -17.2 ± 10.9 (72R); p = 0.00, fat mass ∆% = -13, 7 ± 9.2 (24R) and -18.2 ± 13.0 (72R); p = 0.00 and fat-free mass ∆% = 3.5 ± 2.7 (24R) and 2.5 ± 2 .8 (72R), p = 0.00. The recovery periods 24 and 72 hours between sessions induced similar responses in the parameters investigated in recreationally strength-trained men.
1.6.1 SHELL-AND-TUBE HEAT EXCHANGERS (CELL METHOD): INTRODUCTION
Authors: Gaddis E. S.
Published: March 2023

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1.6.12 SHELL-AND-TUBE HEAT EXCHANGERS (CELL METHOD): GENERAL REMARKS
Authors: Gaddis E. S.
Published: March 2023

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2.5.12 SINGLE PHASE CONVECITVE HEAT TRANSFER: HEAT TRANSFER FOR NON-NEWTONIAN FLUIDS
Authors: Armstrong R. C. , Winter H. H. , Rao B. K.
Published: March 2023

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1.6.4 SHELL-AND-TUBE HEAT EXCHANGERS (CELL METHOD): RULES FOR HIGHEST HEAT TRANSFER EFFECTIVENESS
Authors: Gaddis E. S.
Published: March 2023

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1.6.8 SHELL-AND-TUBE HEAT EXCHANGERS (CELL METHOD): SPECIAL CASE OF THREE TUBE-SIDE PASSES AND TWO SEGMENTAL BAFFLES
Authors: Gaddis E. S.
Published: March 2023

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5.1.1. PROPERTIES OF PURE FLUIDS: CRITICAL PROPERTIES OF PURE COMPONENTS
Authors: Fenghour A.
Published: March 2023

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3.5.3 EVAPORATORS: ARRANGEMENTS FOR THERMAL ECONOMY
Authors: Smith R. A. , Hills P. D.
Published: March 2023

Remove existing Sections 3.5.1-3.5.7 from folder and replace with new Sections.
3.5.6 EVAPORATORS: ESTIMATION OF PRESSURE DROP AND CIRCULATION RATE
Authors: Smith R. A. , Hills P. D.
Published: March 2023

Remove existing Sections 3.5.1-3.5.7 from folder and replace with new Sections.
3.17.9 FOULING IN HEAT EXCHANGERS: FOUUNG IN THE NUCLEAR INDUSTRY
Authors: Lister Derek H. , Turner C. W.
Published: March 2023

Place in folder after Section 3.17.8.
Mathematical model of slab heating in a furnace with walking beams
Authors: Abdukodirov I. B. , Vargin A. V. , Levitskii I. A.
Published: March 2023

Slab heating before hot rolling is necessary for obtaining required metal ductility. The most effective for this purpose are furnaces with walking beams that provide heat supply to all sides of the slab. However, the areas of slabs lower surfaces, contacting with water-cooled beams, are shielded from the radiation of the furnace lower heating zones and take the heat from the beams.To study the inhomogeneity of the slab temperature field and its dependence on the peculiarities of their transport system design, a mathematical model of slab heating in a furnace with walking beams was developed and programmatically implemented, based on numerical solution of a three-dimensional heat conduction problem with piecewise defined boundary conditions on the lower surface. For the open areas of the slab bottom surface, the same boundary conditions were set as on the top surface; and for the areas of contact with the beams, modified boundary conditions were set, taking into account the duration of this contact. For the numerical solution of the system of difference equations, the line-by-line method was applied, which allows us to obtain a system with a three-diagonal matrix of coefficients. The calculations carried out in the approximation of adiabaticity of the contact areas of the slab with the beams during the contact period allowed us to obtain temperature fields for different slab sections. As a result, a significant irregularity of temperature field of the slab lower surface was revealed, affecting the irregularity of temperature field of the entire slab. The developed program for calculating and visualizing the results can be used to study the temperature field of the slab under various heating modes if there is experimental information that allows one to clarify the tuning parameters of the model.
Experience in using and improving the usability of mathematical modeling system of production at a metallurgical enterprise
Authors: Leont’ev А. S. , Rybenko I. А.
Published: March 2023

Due to the world trade development, metallurgical plants have a great variability in preparation of the production plan. At EVRAZ West Siberian Metallurgical Combine JSC (JSC “EVRAZ ZSMK”), the charge is optimized from 110 components only in terms of agglomeration and blast furnace production. The product range consists of more than 2000 units and varies from month to month. Usually, the production plan is optimized only within individual redevelopments. The purpose of optimization is to minimize the cost of conversion and to maximize production. The article describes development and implementation of a mathematical modeling system of production of the entire metallurgical plant on the example of JSC “EVRAZ ZSMK”. In contrast to the existing conversion modeling systems, the goal of the system is a one-time end-to-end optimization of all the plant’s conversions. The ultimate goal is to maximize the profit of the entire plant. During the operation of the new system in 2019 – 2020, high labor costs were found during the work of the users. For example, more than 10,000 test iterations of calculations were performed for the release of 60 plans for the year and calculation of 30 economic cases. A form of work statistics was developed and analyzed, which showed the following main problems: unsolvability of the model due to the input of mathematically incorrect data; repeated calculations of economic cases to isolate and interpret individual changed factors of the plan from the budget; errors at the data verification stage due to incorrect chemical composition of elements or incorrect model settings for a specific period of work. To eliminate the shortcomings of the system, the authors developed the validation systems for input data at the stage before and after calculations, sensitivity analysis and factor calculation modules and automatic chemical composition filling system. Also the possibility of retraining the model on historical data was added.
Composition of tailings after selective reduction of laterite
Authors: Bahfie F. , Manaf A. , Astuti W. , Nurjaman F. , Suharto S. , Herlina U. , Adi W. A. , Manawan M.
Published: March 2023

The selective reduction process generates products in the form of concentrates and tailing/by-products. There is high percentage of iron and other elements in the tailings that are not extracted in selective reduction process. Properties of by-products of selective reduction were investigated using X-ray diffraction (XRD), inductively coupled plasma optical emission spectroscopy (ICP–OES), ultraviolet-visible (UV–VIS), and scanning electron microscopy energy dispersion spectroscopy (SEM–EDS). Based on the results of this study, the properties of iron-sulfur, iron-magnesium-aluminium, and silica phases in the tailings can be interpreted experimentally. For future research, it can be the reference for such processes as acid and base leaching. Pure iron extracted from tailings can be used for metal fuel in the future. The tailings composition data will help future researchers to find optimal processes for the tailings.
Preliminary assessment of the possibility to use large-diameter pipes of Х52 steel for transportation of pure gaseous hydrogen under pressure
Authors: Pyshmintsev I. Yu. , Gizatullin A. B. , Devyaterikova N. A. , Laev K. A. , Tsvetkov A. S. , Al’khimenko A. A. , Shaposhnikov N. O. , Kurakin M. K.
Published: March 2023

To assess resistance to hydrogen embrittlement caused by the presence of hydrogen in the transported product, and, accordingly, suitability of pipes for hydrogen transport, the base metal of large-diameter pipes of X52 strength class manufactured by JSC “ChelPipe” (part of the PJSC “TMK” group of companies) was studied. The work included the study of pure gaseous hydrogen effect under pressure up to 10 MPa on change in mechanical characteristics of the base metal of large-diameter pipes (LDP) during preliminary hydrogen charging for various time periods in a stationary autoclave under pressure, and during simultaneous loading with a slow strain rate (SSRT) under expected operating conditions. Results of the X52 LDP metal study show that there is no significant impact on the effect of gaseous hydrogen under pressure for up to 144 hours on mechanical characteristics of the base metal determined by static uniaxial tension (decrease in ductile characteristics does not exceed 9 %). During SSRT at a rate of not more than 1·10–6 s–1 in pure gaseous hydrogen environment under a pressure of 10 MPa, the change in strength and ductile characteristics does not exceed 13 % in comparison with reference tests in nitrogen environment under the same pressure. The results obtained allow us to consider that the base metal of low-alloy pipe steel with ferrite-perlite microstructure of X52 strength class is sufficiently resistant to hydrogen embrittlement. Final confirmation of the possibility to use LDP made from steel under study will be the results of further qualification tests, including the study of the weld metal and heat-affected zone properties.
Influence of silicon carbides on the structure and properties of composite nickel-phosphorus coating
Authors: Goikhenberg Yu. N. , Polukhin D. S. , Zherebtsov D. A. , Bodrov E. G.
Published: March 2023

The authors studied the structure, properties and corrosion resistance in various acids of nickel-phosphorus coatings with dispersed silicon carbides after crystallization annealing under various modes. Temperatures of the beginning of crystallization after heating at speeds of 1, 5, 20 °С/min and the percentage of crystalline phases formed under isothermal conditions (nickel phosphide Ni3P and nickel) were determined. High microhardness of more than 1000 HV is achieved in a composite nickel-phosphorus coating with dispersed particles of silicon carbides during prolonged low-tempera­ture annealing, accompanied by crystallization with formation of already insignificant (10 %) amounts of Ni3P. The revealed dispersed Ni3P located both in the body and along boundaries of the grain, make the main contribution to the increment of microhardness. The yield strength and ultimate strength of coatings increase during crystallization annealing by only 12 – 15 MPa, and the elongation drops to zero, which is due to the formation of brittle Ni3P compounds. Annealing with short soaking at crystallization temperatures leads to the fact that silicon carbides exhibit a barrier effect, reducing the intensity of formation of crystalline Ni3P and corrosion resistance, while long soaking at lower crystallization temperatures forms about 70 % Ni3P, contributing to consistently high hardness and improved corrosion resistance. Corrosion resistance of composite coatings Ni-P + silicon carbides, regardless of the heat treatment modes, is maximum in acetic and orthophosphoric acids at 70 % nickel phosphide and minimum in nitric acid and its mixtures with other acids.