bluuebunny/crossref_metadata_2025 huggingface dataset:
Polystyrene microplastic exposure in mice: oxidative stress-induced testicular damage, AR gene suppression, and histopathological alterations
Authors: Islam Md , Haque md , Tonu nasrin , Rahman md , Parvez najmul , Islam md , Islam Md , Rashid md , Rahman md
Published: December 2024

ABSTRACT
Aim: Microplastics (MPs), widespread environmental contaminants, pose a growing risk to livestock and other animals by potentially polluting their feed and ecosystems. This study aims to investigate the impact of MP exposure on oxidative stress, testicular function, and androgen receptor gene expression in mice, providing insights into the potential reproductive health risks for animals.
Methods: Adult male mice were divided into three groups: a control group and two groups exposed to polystyrene microplastics (PS-MPs) at concentrations of 0.1 mg/0.5 mL and 0.2 mg/1 mL, respectively. We evaluated antioxidant enzyme levels (CAT, SOD, POD), reactive oxygen species (ROS) levels in testes, sperm count, viability, and motility, as well as histological changes in the testicular tissue. Furthermore, the gene expression levels of AR were assessed using qRT-PCR.
Results: Exposure to PS-MPs led to a dose-dependent decrease in antioxidant enzyme levels and an increase in ROS levels in the testes. Similarly, sperm count, viability, and motility were significantly reduced in the PS-MPs treated groups. Histological examinations revealed a noticeable adverse effects on testicular development, with a marked reduction in germ cell populations. The analysis of gene expression showed significant downregulation of AR genes in mice exposed to PS-MPs, indicating the potential endocrine-disrupting effects of MP exposure.
Conclusion: This study reveals that polystyrene MP exposure causes oxidative stress and reproductive damage in mice. These findings highlight the potential risks for livestock and other animals through contaminated feed, emphasizing the need for further research on microplastics' impact on animal health in agricultural ecosystems.
The Geopoliticization of EU Trade Policy: Exploring the Growing Links Between the Common Foreign and Security Policy and the Common Commercial Policy
Authors: Szép Viktor
Published: December 2024

For a long time, foreign policy and trade were separated from each other in the European Union (EU). Although certain links have always existed between them, in the past the creation of such nexuses often generated constitutional tensions in the EU’s legal order and sparked controversies surrounding the choice of appropriate legal basis. This article aims to show that, since the birth of the geopolitical Commission, the traditional boundaries of the Common Foreign and Security Policy (CFSP) and the Common Commercial Policy (CCP) have been blurred to the extent that it no longer makes sense to draw a strict line between these external policies. The geopolitical Commission has been the engine behind the transformation of EU external relations with its decision to align economic and foreign policy in a more strategic fashion. Although this article represents an effort to analyse the new legal developments in EU external relations, to some extent this research considers internal and external factors affecting EU law that go beyond traditional legal approaches, including the tectonic shifts in the global economy that triggered political reactions by the geopolitical Commission to use trade competences for CFSP purposes.
LUTO ANTECIPATÓRIO: A ÓTICA DA PSICOLOGIA FRENTE AOS CUIDADOS PALIATIVOS EM PACIENTES HOSPITALIZADOS
Authors: Oliveira Francisca Feitosa , Pinheiro Edivaldo Silva , Pereira Eldyane dos Santos , Ferraz Elainy Cristina Costa , Silva Marcione Margarida da , Bonfim Melry Feitosa
Published: December 2024

O luto antecipatório é um aspecto intrínseco da experiência humana, distinto do luto após a morte, pois ocorre antes do falecimento, manifestando-se durante o processo de doença ou adoecimento. Objetivo: descrever o que a literatura científica tem abordado acerca da atuação da psicologia frente aos cuidados paliativos em pacientes hospitalizados. Metodologia: trata-se de uma revisão integrativa acerca luto antecipatório e a ótica da psicologia frente aos cuidados paliativos em pacientes hospitalizados, elaborada a partir de estudos das bases de dados da Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILCAS), Scientific Electronic Library Online (SciELO) e National Library of Medicine (MEDLINE). Os critérios estabelecidos para a seleção dos trabalhos foram artigos publicados na língua portuguesa, no período dos últimos 5 anos, 2019 a 2023. A busca dos artigos ocorreu no mês de março de 2024. Resultados: durante a fase de busca e/ou amostragem na literatura foram encontrados 20 artigos científicos nas referidas bases de dados. Após seleção quanto aos critérios de inclusão foram incluídos 5 artigos científicos para compor esta revisão. Conclusão: o luto antecipatório, parte do processo global de luto, afeta pacientes com doenças graves ou terminais e suas famílias. Requer cuidados paliativos e intervenção psicológica precoce, envolvendo a preparação emocional para a morte e o desenvolvimento de estratégias de enfrentamento.
IMPACTO DAS QUEIMADAS NA AMAZÔNIA COM INCIDÊNCIA DE CASOS DE PROBLEMAS RESPIRATÓRIOS NA POPULAÇÃO
Authors: Gomes Ranna dos Anjos , Lima Rosely Bezarra de , Brasil Tassiane do Vale
Published: December 2024

O objetivo deste projeto é investigar a influência das queimadas na incidência de casos de problemas respiratórios na população na Amazônia. Destaca-que as queimadas têm aumentado durante os últimos anos, no Estado do Amazonas, e com elas surgem doenças respiratórias devido o excesso de fumaça, para combatê-las, ações são realizadas por órgãos ambientais, de modo a minimizar as ocorrências e os seus efeitos na saúde humana. Este estudo tem o objetivo de investigar a influência das queimadas na incidência de casos de problemas respiratórios na população na Amazônia, para verificação foi utilizado à pesquisa bibliográfica, análise documental e dados quantitativos publicados, comparando as ações e os números de ocorrências no período estipulado. Os resultados obtidos serão utilizados para consultas de dados em trabalhos posteriores e na atuação dos órgãos ambientais com as ações para reduzir os focos de incêndios, através da análise comparativa anual de focos de queimadas, e a incidência de doenças respiratórias.  Dessa forma os projetos novos e melhoria nos projetos ativos, poderão ser realizadas com base na pesquisa. Planos de ação, investimento em tecnologias e utilização de políticas públicas para um cumprimento mais rigoroso das leis ambientais.
Cardio-metabolic risk and morbidity of a cohort in a rural community of Bangladesh
Authors: Tomalika Nehlin , Afroz Sadya , Tagar Md Mohiuddin , Ahmed Naima , Sayeed MA
Published: December 2024

Background and objectives: Of the ever-increasing non-communicable diseases (NCDs), cardiometabolic morbidity and mortality constitute the major health burden world-wide. Several cross-sectional studies revealed the increasing prevalence of NCDs irrespective of cast, culture, ethnicity, socio-economic growth and geopolitical environment. Recent cross-sectional studies revealed South Asians are the most susceptible to cardiovascular diseases (CVD). Few cohort studies addressed cardiometabolic morbidity and related risks, particularly in the rural population.This study was carried out to find out the prevalence of metabolic syndrome (MetSyn) and its changes overtime in a rural cohort of Bangladesh.

Methods: The study used baseline data of a study conducted in 2011- 2013 on prevalence of coronary artery disease among a cohort living in 16 villages. During 2021-2023, the baseline data collected in 2011-2013 were retrieved and the participants were searched and categorized into a) physically present, b) died and c) missing. Those who were present were requested to volunteer for re-investigations. Briefly the investigations included interviewing on social, family, personal and clinical history, anthropometry, blood pressure measurement, blood biochemistry and electrocardiography (ECG).

Results: A total of 3928 people participated in baseline study of 2011- 2013. Of them, 1075 could be tracked by village and household. Of them, 953 were found alive. Of the 953 available participants, 651 (254 men and 397 women) volunteered to participate in 2021-2023 study. Compared to 2011-2013 baseline, the prevalence of MetSyn and type 2 diabetes mellitus (T2DM) increased to 31.6% and 5.2% from 7.5% and 0.8% respectively in 2021-2023. Similarly, compared to baseline, the prevalence of obesity and hypertension also showed significant increase overtime. Estimated incidence of MetSyn was 260.8 per 1000 population, which was more profound in women than men (W: M= 300.3:200.8).

Conclusions: The study revealed a significant increase of obesity, hypertension, diabetes and metabolic syndrome within a decade indicating an emerging health burden among the rural people of Bangladesh.

January 2025; Vol. 19(1):003. DOI:https://doi.org/10.55010/imcjms.19.003

*Correspondence: MA Sayeed, Department of Community Medicine, Ibrahim Medical College, 1/A Ibrahim Sarani, Segunbagicha, Dhaka 1000, Bangladesh. Email: sayeed950@gmail.com;

© 2025 The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License(CC BY 4.0).
EFFICIENCY OF DESORPTION OF HARDLY DISSOLVED GASES FROM WATER IN COLUMNS WITH VARIOUS IRREGULAR PACKINGS
Authors:   Kazan State Power Engineering University, LAPTEVA E.A. , FARAKHOV M.I. ,   LLC IVC Inzhekhim, LAPTEV A.G. ,   Kazan State Power Engineering University
Published: December 2024

The process of desorption of corrosive dissolved gases from water by air during CO2 removal and by water vapor during O2 deaeration was investigated. The article briefly discusses approaches to mathematical modeling of mass transfer in packed desorbers with irregular contact devices (chaotic packings) at film counterflow of gas and liquid. To reduce the complexity and time of mathematical modeling, a cellular model of the hydrodynamic structure of flows is presented. An expression is obtained for calculating the efficiency of extraction (mass transfer) of dissolved gases, where the main parameters are the volumetric mass transfer coefficient and the number of complete mixing cells. For a given mass transfer efficiency, the required height of the packed layer is written from this expression. Calculations of CO2 desorption from water by air in columns with Raschig and Pall rings, Intalox saddles, as well as with GIAP and Inzhekhim nozzles with a nominal size of 25-80 mm and a specific surface of 70-185 m2/m3 were performed. Tables are given with experimental and calculated coefficients of mass transfer, nozzle height and pressure drop at an irrigation density of 50-100 m3/(m2 h). Conclusions are drawn about the influence of the flow structure on the efficiency of mass transfer depending on the flow rate of the liquid phase and the design of the nozzles. A histogram is given with the calculated values of the height of the packed layer and the pressure drop at an efficiency of CO2 extraction from water of 99% for the considered packing designs. The introduction of a chaotic Inzhekhim nozzle in a thermal deaerator at a water treatment plant at a thermal station was noted. The presented expressions for determining the efficiency of mass transfer can be used in engineering calculations of packed desorbers of sparingly soluble gases in counterflow.
DETERMINATION OF THE NUMBER OF TRANSFER UNITS AND HEAT TRANSFER EFFICIENCY IN THE DRY BLOCK OF THE COOLING TOWER SPRINKLER
Authors:   Kazan National Research Technological University, MADYSHEV I.N. , DMITRIEVA O.S. , MAYASOVA A.O. , NIKOLAEV A.N. ,   Kazan National Research Technological University
Published: December 2024

Hybrid circulating water cooling systems can be a cost-effective solution for industrial facilities and have attracted widespread attention because of the reduction of water consumption by wet cooling systems and high energy efficiency because of the possibility of combining dry and wet cooling modes. A dry-cooled cooling tower creates an airflow through bundles of radiator pipes, the design of which largely determines the thermal characteristics and performance of the cooling system. The authors have developed the design of a hybrid cooling tower with a tubular radiator and corrugated plates. The article presents the results of a theoretical and experimental analysis of the operation of a new design of a combined cooling tower only when operating in dry mode. To evaluate the efficiency of cooling water in the dry block of the cooling tower sprinkler, experimental and computational studies were carried out using the ε-NTU method, as the most effective for thermal calculation of heat exchangers. A comparison of the experimental data got at the developed installation with the method showed good convergence of the calculation results, due to which it can be widely used for the selection of the radiator design, its verification calculation. With an average air velocity in the cooling tower sprinkler unit of over 6 m/s, the experimental values of the efficiency of the heat exchanger turned out to be slightly higher than the calculated values. The maximum calculated efficiency of the cooling tower's dry sprinkler unit reached 0.244, while the experimental value was 0.25. The calculated value of the number of heat transfer units is 0.291, and the experimental value with a mass flow rate of water in a tubular radiator equal to 0.02 kg/s is 0.3.
CONVOLUTIONAL NEURAL NETWORK MODEL FOR DEFECTS LOCALIZATION AND CLASSIFICATION ON PLATES DURING SEMICONDUCTOR PRODUCTION
Authors:   Kazan National Research Technical University named after A.N. Tupolev, KATASEV A.S. , KATASEVA D.V. ,   Kazan National Research Technical University named after A.N. Tupolev, SMIRNOV YU.N. ,   Kazan State Power Engineering University, SIBGATULLIN A.A. ,   Kazan National Research Technical University named after A.N. Tupolev
Published: December 2024

This article is devoted to the development of a neural network convolutional model YOLOv3 to solve the current problem of localization and classification of defects formed during semiconductor production. Building the model required preparing data for analysis. The publicly available WM-811k dataset was used as input data, containing 811457 images of semiconductor wafers assembled under real production conditions. All images correspond to different types of defects: Center, Donut, Edge-Local, Edge-Ring, Local, Near-full, Random, Scratch, None. In the original dataset, only 172950 images were labeled. At the same time, 85% of the images contained defects of the “None” type, which indicates an imbalance of classes in the data set. To eliminate the imbalance and train the neural network model, a subsample of 9597 images was used. To build a convolutional neural network model, the obtained data is divided into training, test and validation samples based on the method of random group sampling with replacement. The convolutional neural network was built on the training data set. The adequacy (generalizing ability) of the model was assessed using a test sample. The average accuracy of classifying images of defects in semiconductor wafers based on the constructed YOLOv3 model on the training data set was 92.7%, and on the test set - 88.2%. The model showed high accuracy in recognizing data from the training set on images of defects such as “Center” (95%), “Edge-Ring” (98%), “Edge-Loc” (94%), “Near-full” (98%) and “None” (95%). When recognizing test data, the network showed the highest accuracy when identifying defects of the “Edge-Ring” and “Near-full” types (97% and 95%, respectively). The results of the studies indicate the adequacy of the constructed model, which can be effectively used to solve problems of localization and classification of defects on wafers in semiconductor production.
DATA COLLECTION SYSTEMS IN THE EDUCATIONAL PROCESS
Authors:   Kazan National Research Technological University, PERUKHIN M.YU.
Published: December 2024

Modern process control systems include the collection and processing of information, which is currently considered a «prerequisite», since the collection and archiving of information allows to resolve non-standard situations or simply generate a report, which is convenient and sometimes necessary. The article discusses the data collection system, using the example of the MSD-200 data collection module of the OWEN production association, which is a domestic manufacturer of control and measuring devices and automation. The features of configuring the data collection module and possible ways to connect it are considered. The author shows that in relation to the existing laboratory of the Kazan National Research Technological University at the Department of Automated Information Collection and Processing Systems, there is a need to collect data, archive them with further processing. Using a laboratory stand for temperature measurement as an example, a data acquisition module was connected and a program for the controller was written in the CFC programming language in the CoDeSys programming environment, since in the future it is planned to equip the laboratory stand with a programmable logic controller. The MSD-200 is one of the best analogues from the Russian manufacturer due to its ease of configuration and a number of other characteristics such as high data exchange rate and price characteristics. The ability to connect it in three ways, its ability to act as a master, as a slave or work in spy mode, which significantly distinguishes it from its analogues and expands its capabilities. In addition, it has a high data transfer rate.
SEARCH FOR A GENERALIZED SOLUTION TO AN IMPROPER LINEAR PROGRAMMING PROBLEM BASED ON A DEDICATED MAXIMUM JOINT CONSTRAINT SUBSYSTEM
Authors:   Irkutsk State Transport University, NOSKOV S.I. , PASHKOV D.V. ,   Irkutsk State Transport University
Published: December 2024

The paper provides a brief overview of publications in which the study of some complex technical objects is carried out by presenting their mathematical models in the form of mathematical problems, specifically, linear programming (LP). In particular, the following are considered: a model of mixed-integer linear programming for optimal planning of multi-plant, multi-delivery and multi-grade petrochemical production; the problem of minimizing the use of water and wastewater in the production process of the Brazilian petrochemical industry using mass integration through the use of mathematical programming; innovations in petrochemical technologies aimed both at increasing the supply of liquefied natural gas and at solving new problems, including the need for decarbonization and adaptation to the future closed-loop economy; methodology for optimal short-term planning of integrated oil refining and petrochemical complexes; spatial organization of the Chinese petrochemical industry. A method is proposed for the generalized solution of an improper linear programming problem in a normal form, in which the system of constraints-inequalities is incompatible. The specific reasons for incompatibility may be errors in the mathematical model itself and its information support, as well as real contradictions of the analyzed object, which an inappropriate model, in essence, adequately reflects. At the first stage, by solving a sequence of 0-1 mixed-integer linear programming problems, a set of vectors is formed, including the numbers of joint constraints, and at the second stage, by solving linear programming problems for each of these vectors, a generalized solution to the original problem is found, preserving the maximum power of the joint subsystem of constraints. A numerical example containing two variables and ten constraints has been solved.
STUDY OF ADSORPTION OF AMPHOTERIC SURFACTANT AMINOXIDE ON MICROBIAL CELLS FOR THE PURPOSE OF ISOLATION OF SUBSTANCES OF PROTEIN NATURE
Authors:   Kazan National Research Technological University, KULAGINA E.M. , YUSUPOVA R.I. , BARABANOV W.P. ,   Kazan National Research Technological University
Published: December 2024

A promising direction in obtaining effective forages is the creation of technology for obtaining protein from microbial biomass and providing livestock breeding with new types of protein-vitamin concentrates. The Acetobacter methylicum strain, a producer of fodder protein, was used as an object of research. One of the stages of microbial protein production - the stage of isolation of microbial synthesis products - was studied. Protein isolation was carried out at the stationary phase of growth, the time of reaching which was determined by the experimental growth curve of bacterial culture. To intensify the stage of obtaining the final product in this study it is proposed to use an ampholytic surfactant - aminoxide (alkyldimethylamine oxide). It was found that at the concentration of surfactant in the culture liquid up to 1% adsorption of surfactant on the cell walls of bacteria takes place, while there is a destruction of cell walls and, accordingly, a decrease in the number of viable cells in the population of Acetobacter methylicum, which is probably associated with changes in the permeability of cell walls and their subsequent lysis. As a result, the number of viable cells decreases and the amount of released protein increases, which was monitored by the PI parameter (percentage of cell viability in the population). It was shown that for this surfactant the optimal concentration for cell destruction and protein release is 0.5% and the incubation time with surfactant is enough 15 minutes. Changing the surfactant concentration does not result in significant protein yield.
DEVELOPMENT OF TECHNOLOGY FOR PRODUCTION OF PULP FOR CHEMICAL PROCESSING USING DOMESTIC BLEACHING REAGENTS
Authors:   Perm National Research Polytechnic University, KHAKIMOVA F.KH. , FONARYOV I.I. , NOSKOVA O.A. , KHAKIMOV R.R. ,   Perm National Research Polytechnic University
Published: December 2024

At present, technological sovereignty in the production of pulp products is very important for the pulp and paper industry, and for the same purpose, pulp bleaching using only domestic bleaching reagents. On this basis, the possibility and feasibility of obtaining wood pulp for chemical processing using domestically available inexpensive bleaching reagents - chlorine, sodium hypochlorite and sodium hydroxide - is of great interest. From the point of view of ecology, bleaching with these reagents can be carried out without formation of toxic products. Formation of toxic organochlorine products occurs in case of exceeding of an important indicator - natural absorption capacity to chlorine in the process of pulp treatment. The technological scheme of bleaching and enrichment of unbleached industrial sulphite pulp from spruce wood to obtain pulp for chemical processing (for nitration) was developed. In contrast to traditional technologies, pulp with increased lignin content (3.4 %) was used for the study and a short economical bleaching and refining scheme (four steps in total) was obtained using only three domestic available chemical reagents. When obtaining pulp for chemical processing, some amount of fine fibre is necessarily separated from the initial unbleached pulp. In view of the above, the final scheme of bleaching and enrichment of sulphite pulp for chemical processing is as follows - separation of fine fibre - C - E - A - HAT - G - A. The quality indicators of the obtained bleached and enriched pulp meet the requirements of the norms for pulp for nitration.
METHOD FOR ADAPTIVE DETERMINATION OF THE DECISION-MAKING THRESHOLD IN THE CLASSIFICATION OF POORLY DEFINED DATA
Authors:   Kazan National Research Technical University named after A.N. Tupolev, GATIN R.R.
Published: December 2024

When solving the classification problem, many methods require knowledge of the threshold for belonging a vector to a class. The decision on whether a new vector belongs to a given class is made after comparing the distance from the vector to the class with the accepted threshold. If the threshold is not exceeded, the vector is considered classified. The article proposes a method for the adaptive calculation of such a threshold, called the confidence threshold, for the case of rarely occurring data in the presence of distortions in measurements (poorly defined data). The method includes the sequential determination of the confidence interval for the distances of previously classified vectors to their class with a given confidence probability. The right confidence limit is selected as the confidence threshold of the class. Since poorly defined data are characterized by small and ultra-small amounts of data samples, it is proposed to determine the confidence interval in two ways: for a small sample size, its normal distribution is assumed, and the Laplace distribution quantile is used; for an ultra-small volume, the Student distribution and the quantiles of the t-distribution are used. During classification, the distance from the new vector to the class is calculated, and the vector is considered classified with a given confidence probability if this distance does not exceed the confidence threshold. The distance can be determined by any known metric. The paper presents both the algorithm of the method itself and computational experiments that have shown the applicability and effectiveness of the proposed technique.
PHOTODEGRADATION OF SEMI-CRYSTALLINE POLYLACTIDE UNDER UV RADIATION: I. HETEROPHASE MECHANISM OF MACROMOLECULE RACEMIZATION
Authors:   N.M. Emanuel Institute of Biochemical Physics RAS, MIKHEEV YU.A. , LOMAKIN S.M. , USACHEV S.V. , KOVARZANOVA E.V. , ARTSIS M.I. ,   N.M. Emanuel Institute of Biochemical Physics RAS, ABZALDINOV KH.S. , YARULIN A.F. , STOYANOV O.V. ,   Kazan National Research Technological University
Published: December 2024

The regularities of UV photodegradation of semi-crystalline films of poly-L-lactide (PLA) formed from solution in chloroform have been analyzed on the basis of IR spectroscopy and gel permeation chromatography. When analysing the experimental results, we took into account the fact that during the preparation of semi-crystalline films of poly-L-lactide, mechanical stresses accumulate in them. The presence of the latter is the reason why the acts of photodegradation proceeding according to the Norrish I mechanism prevail at the initial stage of the process in imperfect elements of the crystalline phase, in which enantiomerisation and racemisation of PLA macromolecules occur simultaneously with the rupture of polymer chains into radicals. In this work, the role of such important factors as the presence of interfacial stresses stabilising in films at the stage of their formation and the role of triplet energy migration through the system of carbonyl groups are considered for the first time. The imperfectly structured primary elements of the crystalline phase formed in the matrix of solid PLA represent ‘traps’ of triplet energy of photoexcitation migrating along the matrix C=O-groups. In such traps, C-C-bonds are broken on the inner walls of nanoscale slits of imperfect crystallites, and under such harsh conditions, either recombination with restoration of molecular chains or disproportionation of end radicals with fixation of chain fragmentation acts are realised. Acts of recombination of radicals with free valence on carbon atoms are preceded with a small probability by acts of enantiomerization of chiral carbon from the L state into the D state. These acts take place in the middle segments of polymer chains, resulting in the appearance of interchain bonding sites in the form of racemates. During the continuing photoprocess, the acts of macromolecule rupture propagate to the glassy phase of PLA. The observed peculiarities of photodegradation are explained by the heterophase mechanism of transfer of triplet excitation energy by carbonyl C=O-groups of the polymer from the glassy to the crystalline phase, in which C=O-groups not only accept the triplet energy migrating through the matrix, but also transform it into the energy of polymer chain scission.
SELECTION OF QUANTUM-CHEMICAL APPROACHES FOR THE SIMULATION OF THE STRUCTURE AND CERTAIN SPECTRA OF THE MESOGENIC EUROPIUM(III) COMPLEX
Authors:   Kazan National Research Technological University, SAMOILENKO A.V. , ROMANOVA K.A. , GALYAMETDINOV YU.G. ,   Kazan National Research Technological University
Published: December 2024

Unique photophysical properties of lanthanide(III) ions (Ln(III)), such as various waves of their monochromatic luminescence, the peculiarities of its mechanisms and the occurring photophysical process, are an explanation of their introduction into optoelectronic devices and instruments, solar and thermoelectric elements, light emitting diodes, in medicine as tags for marking metabolic processes. At the same time, the significant labor intensity and costs of synthesis and experimental analysis of the Ln(III) compounds' properties make quantum-chemical simulation methods a relevant solution in this situation. In this article approaches for the quantum-chemical simulation of the molecular structure and selected properties of the mesogenic europium(III) (Eu(III)) complex with a substituted β-diketone and a Lewis base were recommended. To carry out the current study, several basis sets and quantum-chemical methods were used to perform the process of optimization of the molecular geometry of the complex, calculating the vibrational frequencies of the IR spectrum and absorption spectrum. The choice of the approach and analysis of the accuracy of the calculated parameters and characteristics were revealed by studying the model Eu(III) compounds with similar ligands, but with a simpler structure. For model complexes, experimental data on X-ray diffraction analysis of their molecular structure were found. For the subsequent calculation of the mesogenic compound, according to the comparison of the simulation results with experimental literature values, the most suitable and accurate approaches were selected. The absorption spectra were calculated in the ORCA 5.0 program using the density functional theory method. The hybrid functional B3LYP with the inclusion of the dispersion correction D3BJ was chosen for the modeling. The DFT-D3 Grimm approach and the Back-Johnson damping scheme made it possible to correct dispersion. The calculations of the vibrational frequencies and IR spectra of complexes were carried out in the Priroda 06 program by the density functional theory with the exchange-correlation functional PBE. At the same time, relativistic effects were taken into account by the use of the appropriate basic set. At the same time, relativistic effects were taken into account by the use of the appropriate basic set. Comparison of simulation results obtained by various approaches with experimental data, as well as the assessment of methods' advantages and disadvantages allowed to select the appropriate methodology for calculations of the mesogenic Eu(III) complex.
DEVELOPMENT OF HEMP FIBRE-BASED COMPOSITIONS FOR WOUND DRESSINGS
Authors:   Kazan National Research Technological University, ZAKHAROVA A.N. , LUTOVA D.A. , LISANEVICH M.S. ,   Kazan National Research Technological University, KULIKOV A.V. ,   JSC Nefis Cosmetics
Published: December 2024

Hemp fibre has great potential for medical applications due to properties such as eco-friendliness and hypoallergenicity. It also has the analgesic and anti-inflammatory effects of cannabidiol on wounds of various types. The use of hemp fiber in combination with available auxiliary materials in wound dressings will produce a competitive product with high consumer properties. A special composition with components - hemp fibre, polyvinyl alcohol, citric acid, glycerin and water - in different ratios of components was developed to bind fibers in wound dressing. At the analysis of scientific articles, devoted to manufacture of films and hydrogels on the basis of starch, it is revealed that such a composition is developed both with the use of citric acid and starch, glycerol only; and with the introduction of additional components of polymers - polyvinyl alcohol. In the developed composition, polyvinyl alcohol can be a thermoplastic matrix, glycerol can be a plasticizer, citric acid can be a crosslinker, and potato starch can be a biodegradation agent. The interest in starch is due to its property of biodegradability, which is due to its breakdown into safe components. The use of starch in medicine, particularly for wound coatings, promotes faster wound healing. Polyvinyl alcohol, which is a polymer of synthetic origin, is water soluble, has the ability to form a film, flexible and strong, and biodegradable. It also has good strength properties and is compatible with starch. As a result of this work, the most optimal composition with improved absorption characteristics was determined, which favors its use as a functional pad for wound dressings.
SYNTHESIS OF A MEDIUM ENTROPY ALLOY PRECURSOR BY GALVANIC REPLACEMENT
Authors:   Kazan National Research Technological University, KOLPAKOV M.E. , DRESVYANNIKOV A.F. , ERMOLAEVA E.A. ,   Kazan National Research Technological University
Published: December 2024

High entropy multi-element alloys are characterized by exceptional properties and have great potential as next-generation functional materials. However, the search for a versatile and simple strategy to synthesize such alloys continues. Electrochemical deposition is one of the methods to obtain high-entropy alloys. The present study shows the possibility of forming polymetallic systems similar in elemental composition to medium-entropy alloys by galvanic replacement using aluminum as a sacrificial metal. With the combined presence of Fe(III), Co(II), Ni(II), Cu(II) and Cr(III) ions in the initial solution, the corresponding elemental metals are co-isolated during galvanic replacement. When metal ions and chloride ions interact with the surface of aluminum particles in an aqueous medium, the reaction mixture is heated. According to X-ray diffractometry data, the presence of metallic phases has been established and the sizes of coherent scattering regions (~20 nm) have been calculated. It has been established by spectral and electron microscopic methods that the elements (Fe, Co, Ni, Cu) isolated on the surface of the aluminum matrix are distributed relatively evenly and are practically in an equimolar ratio. The particles of the synthesized sample of the dispersed Fe-Ni-Co-Al-Cu-Cr system are micro-dimensional skeleton structures with a large number of nuclei of different shapes. The main part of the obtained particles has a smaller average diameter than the average particle diameter of the initial aluminum powder. Ultrasonic treatment of sediment after galvanic replacement helps to reduce the average particle size. The investigated polymetallic system can serve as a starting material for the formation of bulk materials by modern consolidation methods.
Analyse et synthèse des systèmes logiques
Authors: Mange Daniel
Published: December 2024

Ce livre présente les deux types d'éléments qui composent le système logique asynchrone: l'élément combinatoire et l'élément de délai (ou retard). Il décrit les assemblages principaux des éléments combinatoires, les modèles de la bascule bistable, ainsi que les compteurs et les systèmes séquentiels synchrone ou quasi synchrones. Il définit l'élément de délai inertiel et traite des assemblages quelconques sans ou avec boucle de rétroaction.
Filtres électriques
Authors: Neirynck Jacques , Hasler Martin , Dehollain Catherine , Dedieu Hervé
Published: December 2024

Les méthodes de conception des filtres électriques ont traditionnellement fait appel à une foule de méthodes disparates, tenant plus de la recette que de la démarche scientifique, et elles aboutissent aujourd'hui à une floraisons de technologies concurrentes. Le but de ce volume est d'ordonner ce foisonnement autour de quelques lignes de force. Les auteurs se sont efforcés de développer des perspectives centrales, propices à la concision des calculs et à l'économie des concepts. On explique certes comment on peut concevoir un filtre et de multiples exemples numériques le montrent mais aussi, et surtout, on discute pourquoi telle méthode s'est imposée de préférence aux autres. Quatre chapitres ont été ajoutés à cette nouvelle édition. L'adaptation d'impédance à large bande est présentée sous un angle nouveau en montrant qu'il s'agit d'un problème de filtrage sous contraintes. La synthèse des filtres numériques à réponse impulsionnelle finie ou infinie est largement traitée. Après une étude approfondie du filtre LC classique, on montre comment ce prototype est adaptable à une foule de technologies concurrentes, du filtre RC-actif au filtre numérique en passant par le filtre à capacités commutées.
Anais do XVIII Simpósio Psicologia e Cidadania
Authors: Fundação Herminio Ometto Centro Universitário da
Published: December 2024

Anais do XVIII Simpósio Psicologia e Cidadania
Immunomodulatory effect of shrimp by-products in diets for Nile tilapia (Oreochromis niloticus)
Authors: Heluy Guilherme Melgaço , Silva Josiane Ramos da , Vasconcelos Vivian Costa , Silva Maria Angélica da , Araújo Marcele Trajano de , Souza Douglas Lemos de , Santos Gerlayne Maria dos , Cahú Thiago Barbosa , Veras Bruno Oliveira de , Ludke Maria do Carmo Mohaupt Marques , Santos Juliana Ferreira dos , Bezerra Ranilson de Souza
Published: December 2024

Aquaculture plays a critical role in food security, with Nile tilapia (Oreochromis niloticus) being one of the most widely farmed species due to its resilience and adaptability. However, the reliance on traditional feed ingredients poses sustainability challenges. This study aimed to investigate the immunomodulatory effects of incorporating shrimp cephalothorax lipid extract (SCLE) and shrimp cephalothorax meal (SCM) in Nile tilapia diets as sustainable feed alternatives. Two experiments were conducted using diets with varying levels of SCLE (0.4%, 0.8%, 1.2%, and 1.6%) and SCM (5%, 10%, 15%, and 20%). A total of 200 healthy, uniformly sized Nile tilapia fingerlings were selected for two trials with average weights of 4.38±0.13 g and 3.24±0.07 g, respectively. Fish were distributed across 20 tanks and fed ad libitum for 45 days. Hematological parameters were analyzed, revealing that diets with SCLE significantly increased leukocyte, thrombocyte, and hematocrit levels, particularly at 1.6% inclusion. SCM inclusion also led to higher leukocyte counts, especially at 20%. These findings suggest that SCLE and SCM positively impact the innate immune system of Nile tilapia, enhancing their ability to resist pathogens. Additionally, the use of shrimp by-products in aquafeeds presents a viable strategy for reducing environmental waste and promoting more sustainable practices in aquaculture.
Análise do regime hidrológico do rio Negro utilizando dados altimétricos do satélite Sentinel-3A
Authors: Maciel Júnior Robson de Souza , Oliveira Mateus Ferreira de , Silva Joecila Santos da
Published: December 2024

A altimetria espacial surgiu como uma tecnologia utilizada para o monitoramento de águas oceânicas, mas devido à sua cobertura global, sua aplicação em águas continentais passa a ser um uma possibilidade, apresentando dados com um alto grau de confiabilidade espacial, principalmente se tratando da caracterização dos eventos relacionados ao ciclo hidrológico. Este trabalho tem como objetivo realizar um estudo a partir da análise dos dados altimétricos fornecidos pelo satélite Sentinel-3A, concentrando-se no estudo das potencialidades da obtenção de níveis de água. A pesquisa é embasada em revisão bibliográfica da altimetria espacial na bacia Amazônia, enfocando suas principais premissas de projeto, componentes e execução na Bacia do rio Negro. O desenvolvimento do trabalho inclui o levantamento e tratamento de dados altimétricos de nível de água, obtidos através, de estações virtuais. A compilação dos dados resulta em uma planilha de níveis da lâmina de água, que auxiliaram na elaboração de cotagramas individuais para cada série temporal, mediante as médias mensais anuais das cotas altimétricas. O estudo visa auxiliar nas tomadas de decisões em situações emergenciais ou de Estados de Calamidade Pública, tendo como cenário a bacia do rio Negro.
Uso do LED associado a tratamentos terapêuticos para efeitobactericida
Authors: Silva Catarina Palma da , Soares Tainara da Cruz , Pereira Nicole Macedo , Chaves Karine Rodrigues do Nascimento
Published: December 2024

O uso do LED para fins terapêuticos tem estímulo fotodinâmico na porfirina das bactérias que podem levar a sua morte. Ainda não há um padrão para antissepsia, sendo comum o uso com LED azul com 10J/m³ e LED Violeta com 10J/m³. Este estudo trata-se de uma pesquisa de campo, com natureza descritiva e abordagem qualitativa. A pesquisa passou pelo Comitê de Ética e foi aprovado sob parecer 752456123.7.00005168. Para a realização dos testes foram selecionados 20 voluntários sem lesões, feita a coleta com swab estéril no terço superior facial antes e após a exposição ao LED. Com o resultado da estatística de p= 0.779. Então, não há grande diferença após o uso destes LEDs. Nas placas de controle de qualidade não houve contaminação cruzada. Com isso, apesar de comumente utilizada para inibir bactérias, pode não ser o mais eficaz para assepsia, pois a estatística demostrou que a diferença de bactérias antes e após o uso do LED azul 10J/m³ e LED Violeta com 10J/m³ não é relevante.
O papel do/a pedagogo/a no processo de planejamento curricular integrado na rede federal de ensino
Authors: Lima Jeorge Venancio Santos de , Cavalcanti Ricardo Jorge de Sousa
Published: December 2024

Este estudo, desenvolvido no âmbito do Mestrado Profissional em Educação Profissional e Tecnológica (ProfEPT), na Instituição Associada Instituto Federal de Alagoas, Campus Benedito Bentes, apresenta o resultado da etapa exploratória de uma pesquisa desenvolvida e defendida de mesmo título no ProfEPT. Nessa investigação, discorremos sobre o papel do/a pedagogo/a no processo de planejamento integrado curricular na Rede Federal de Ensino em vista da articulação de um currículo integrado, cujo cerne se volte à Formação Humana Integral. Quanto à natureza do método, caracteriza-se como uma pesquisa qualitativa, levando-se em conta a abordagem da pesquisa-ação e contou com a aplicação de instrumentos de coleta de dados como questionários e entrevista, além de processos formativos nos quais contou-se com pedagogos/as e docentes da formação geral e da formação profissional como participantes. Os resultados apontam a relevância do papel do/a Pedagogo/a na Educação Profissional e Tecnológica, sobretudo, na mediação/participação em processos formativos docentes, cuja tônica é a integração curricular como um dos princípios basilares do EMI na EPT brasileira.
Atuação da atenção primária à saúde frente à pandemia da COVID-19
Authors: Rolim Alwsca Layane Gonçalves , Farias Maria Luísa Sena , Pessoa Natália Ramos Costa , Farias Camilla Ribeiro Lima de , Mendes Ryanne Carolynne Marques Gomes
Published: December 2024

Introdução: A Atenção Primária à Saúde assume um importante papel no enfrentamento da pandemia da covid-19, uma vez que é considerada a principal porta de entrada do sistema de saúde. Objetivo: Compreender a atuação da Atenção Primária à Saúde frente à pandemia da covid-19. Metodologia: Trata-se de um estudo descritivo com abordagem qualitativa, desenvolvido com 10 profissionais de saúde atuantes em uma Unidade de Saúde da Família do município de Recife, Pernambuco. A coleta de dados se deu por meio de uma entrevista semiestruturada. As entrevistas foram transcritas para o programa Microsoft Word 2010, analisadas segundo a análise de conteúdo proposta por Bardin, e discutidas à luz da literatura científica pertinente. Resultados: Após análise das entrevistas, os dados foram compilados em três categorias temáticas: Atenção Primária à Saúde e adaptações no processo de trabalho durante a pandemia da covid-19; Ações desenvolvidas na Atenção Primária à Saúde para combater o SARS-CoV-2; e Dificuldades elencadas pela equipe para consolidação das ações. Conclusões: A Atenção Primária à Saúde foi imprescindível para a mitigação da pandemia no Brasil. Apesar de ter que adaptar seu processo de trabalho as novas circunstâncias epidemiológicas, percebe-se que as principais características, como longitudinalidade, integralidade, coordenação do cuidado e orientação familiar foram preservadas.
Competências empreendedoras no ensino superior: uma revisão sistemática das práticas educacionais e demandas do mercado
Authors: Morita Marcos Roberto , Vieira Almir Martins , Perez Gilberto
Published: December 2024

Esta revisão sistemática tem como objetivo investigar o alinhamento entre as competências empreendedoras e profissionais ensinadas nas instituições de ensino superior (IES) e aquelas exigidas pelo mercado de trabalho, buscando entender como as IES podem aprimorar a formação de futuros empreendedores e profissionais. Para alcançar esse objetivo, realizou-se uma revisão sistemática nas bases de dados Web of Science, Scopus e Scielo até junho de 2024. O estudo incluiu artigos que abordassem competências empreendedoras, educação superior, empreendedorismo, universidades e educação gerencial. Após a triagem, 67 artigos foram analisados e organizados com o auxílio do fluxograma PRISMA, abrangendo temas como comunicação, criatividade, liderança e pensamento crítico. Os resultados indicam uma correspondência entre as competências ensinadas nas IES e aquelas demandadas pelo mercado, embora ainda existam lacunas em áreas como adaptabilidade e competências digitais. Conclui-se que ajustes nos currículos das IES são necessários para garantir que os graduados estejam preparados para o ambiente dinâmico do mercado de trabalho. Este estudo contribui para a literatura ao oferecer uma análise detalhada das práticas educacionais, fornecendo recomendações para que as IES promovam um ensino mais alinhado às demandas atuais do mercado, através do desenvolvimento de competências empreendedoras e profissionais essenciais.
FAMÍLIA MULTIESPÉCIE: DESAFIOS DA LEGISLAÇÃO SOBRE A GUARDA DE ANIMAIS DE ESTIMAÇÃO
Authors: Silva Raquel Mariane de Araujo , Ferreira Letícia de Oliveira Catani
Published: December 2024

Este estudo examina a crescente relevância da família multiespécie e os desafios legais relacionados à guarda de animais de estimação em casos de dissolução familiar. A pesquisa analisa os Projetos de Lei 1806/2023, 4375/2021, 179/2023 e 941/2024, com foco nas mudanças sociais e culturais que reconhecem os animais como membros fundamentais das famílias. A metodologia adotada foi dedutiva, com revisão bibliográfica e análise desses projetos, destacando os critérios para a guarda compartilhada de pets. Os resultados apontam para uma evolução no conceito de família no ordenamento jurídico, ao considerar os animais como membros afetivos, o que favorece a criação de uma legislação mais protetiva e alinhada à realidade atual. Os projetos analisados oferecem diretrizes promissoras, mas ainda necessitam de regulamentação detalhada para garantir sua efetiva aplicação. Assim, a pesquisa contribui para a compreensão de como a legislação pode acompanhar as transformações sociais no reconhecimento dos direitos dos animais nas relações familiares.