bluuebunny/crossref_metadata_2025 huggingface dataset:
Implementasi Media Pembelajaran Robokids Berbasis STEAM Untuk Meningkatkan Minat Belajar Dan Prestasi Belajar Siswa Sekolah Dasar
Authors: Irfan Saninur Azis  , Muniroh Munawar  , Sukamto
Published: November 2023

The background of this research is the lack of interest in learning and student learning achievement, the lack of use of STEAM-based learning media in learning so that learning is less interesting so that it affects student learning interest. This study aims to describe how interest in learning and learning achievement of elementary school students is influenced by STEAM-based robokid learning media. One group pretest-posttest design is used in this type of quantitative descriptive research. In this study, questionnaires, interviews, and observations were used to collect data. In this research using data analysis techniques in the form of Paired samples t-test and N-gain score test. In the paired samples t-test, the results of data analysis of learning interest and learning achievement show sig. (2-tailed) 0.000 <0.05. Interest in learning gets an average N-Gain Score of 0.7014 on the N-Gain Score test, while learning achievement gets an average N-Gain Score of 0.4029. It was concluded that STEAM-based robokid learning media can improve the learning achievement of elementary and high school students. So that robokids learning media can be used by teachers in learning.
Pengaruh Medıa Anıması Terhadap Hasıl Belajar Sıswa Kelas V Sekolah Dasar
Authors: Budianti Yudi , Azisabdul Dede
Published: November 2023

Animation with class students who do not apply animation media, and to find out students' perceptions of the use of animated media in learning. Animation that does not implement animation media as a tool in the learning process. Delivering material. This research is a quantitative study conducted. The type of experiment used in this study was a quasi-experimental using the Nonequivalent Control Group design. Design). The sample size utilized in this study consisted of 67 students. Technique The data collection process involves the utilization of a 15-item multiple-choice test and documentation. Based on the findings of this research, the calculated t-value (4.672) exceeds the critical t-value (ttable). The obtained p-value of 0.461 indicates that the null hypothesis (Ho) is rejected and the alternative hypothesis (Ha) is accepted at a significance level of 0.05. In this context, it can also be observed through a comparison of the average scores of students' academic achievement before and after the intervention. In order to apply animation media, a calculation is performed to change the number 54.66 to 75.56. The statistical analysis employed in this study is a sample t-test. Thus, it can be concluded that the instructional media in the form of Influence animation can influence student learning outcomes in class V SDIT Patriot, Bekasi Regency.
Analisis Bahan Ajar Berwawasan Agraris untuk Pembelajaran IPA di Sekolah Dasar
Authors: Fadlillah M. , Bohri Rahman2  , Nurul Istiq’Faroh  , Ayik Fena Emilda  , Debby Rahmawati
Published: November 2023

Indonesia as an agricultural country must continue to be introduced and instilled in students in elementary schools. One of them is by incorporating agrarian-oriented materials in learning activities. The purpose of this study was to determine the model of teaching materials with an agrarian perspective for learning in elementary schools. The literature study method was used in data collection, namely by analyzing articles and various literature relevant to the research. The results showed that the teaching materials with an agrarian perspective included agricultural materials, in the form of getting to know agricultural plants, farming activities, and processing of agricultural products. The forms of teaching materials with an agrarian perspective are printed, non-printed, and interactive teaching materials. It is hoped that this teaching material with an agrarian perspective can support science learning in elementary schools, especially in introducing agriculture and instilling an attitude of caring for the environment.
Bagaimanakah Aktivitas Belajar Siswa Sekolah Dasar Berlatar Belakang Keluarga Broken Home?
Authors: Maulid Farakh Anggita  , Muhammad Abduh, M.Pd
Published: November 2023

The family becomes the first and foremost place of learning for children. But not all families can be a comfortable place to learn for children, especially in broken homes. Many efforts have been made in improving the learning activities of children with broken home backgrounds, but there are still few that describe more deeply related to the learning activities of students from broken home families.  The purpose of this study is to describe the learning activities of students with broken home family backgrounds in MI Ma'Arif Sraten. This research method uses a qualitative descriptive approach. Data collection techniques use interviews, observation and documentation. The data obtained were tested for the validity of the data by triangulation techniques, followed by data analysis with data reduction, data display and drawing conclusions. The results of the study showed that broken home family conditions had a negative influence on student learning activities. These influences include visul, oral, listening, writing, and mental activities, and there are impacts caused by broken home family conditions, namely the psychological condition of children who are disturbed and children's educational achievements that have decreased. It can be concluded that students' learning activities are influenced by broken home family conditions.
Darwin, Gödel, Luria, Delbrück: Biomedical, Mathematical, and Metamathematical Perspectives on Attributes and Consequences of Random Somatic Mutations Subject to Selection
Authors: Greenspan Neil S. , Han Owen
Published: November 2023

This perspective explores the ways in which random somatic mutation and selection can influence phenotypes that are biologically or clinically consequential. We also discuss the ways in which genetic research from recent decades has provided impetus to think about how _de novo_ mutations in parental germ cells and somatic mutations in progeny might affect progeny phenotypes and heritability. The phenomenon of extended phenotype is characterized and discussed in terms of the impact it has on influencing phenotypes in ways that might affect heritability. We therefore propose revising the broad heritability equation to reflect these experimental advances and better convey the full range of factors that can exert influence over organismal phenotypes. Finally, we consider how an analogy between changes in axiom systems and mutational changes in genomes prompts consideration of a broader comparison between formal deductive systems and the structured genetic systems of cells and organisms.
Developing the theory of Toxic Chemotherapeutic Nutrition for Cancer Cells: Glucosodiene Polymer Structure, Safety, Efficacy, and Human Outcomes in Targeting Tumors via Glucose Mutation
Authors: Akl Maher M. , Ahmed Amr
Published: November 2023

Cancer is a complex genetic disease characterized by aberrant cellular behaviors, including uncontrolled growth, invasion, and metastasis. The development of personalized treatment strategies based on genomic profiling has led to improved outcomes. Recent scientific endeavors have focused on targeting cancer through metabolic approaches, capitalizing on the altered metabolic pathways in cancer cells. Glucosodiene polymer, a newly derived compound from glucose, has shown promising results in inhibiting glucose metabolism and modifying the tumor's microenvironment acidity. The Maher Akl Theory "Glucose Mutation" proposes a strategic approach to target cancerous tumors by inhibiting glucose metabolism and altering the tumor's microenvironment acidity using glucose isomer polymers. The goal is to disrupt the metabolic activity of the tumor and potentially modify and control the disease. This manuscript provides an overview of the metabolic vulnerabilities of cancer cells, evaluates the synthesis and chemical structure of glucosodiene, documents its safety, and explores its potential as a targeted therapy for cancer treatment. Additionally, a subset of successful clinical trials is presented, focusing on a case of successful treatment of triple-negative breast cancer (TNBC) with glucosodiene. The potential mechanisms of action of glucosodiene in cancer, including its impact on glucose metabolism, modulation of signaling pathways, and immune-enhancing effects, are discussed.
New adaptative numerical algorithm for solving partial integro-differential equations
Authors: Zeghdane Rebiha
Published: November 2023

The paper introduces an acurrate numerical appraoch based on orthonormal Bernoulli polynomials for solving parabolic partial integro- differential equations (PIDEs). This type of equations arises in physics and engineering. Some operational matrix are given for these polynomials and are also used to obtain the numerical solution. By this approach, the problem is transformed into a nonlinear algebraic system. Convergence analysis is given and some experiment tests are studied to examine the good accuracy of the numerical algorithm, the proposed technique is compared with some other well known methods.
Design of an intelligent controller for improving the solar system efficiency
Authors: Djalel Dib , Zhour Abada , Abdelhakim Bendakir
Published: November 2023

Ensuring the optimal performance of photovoltaic systems necessitates the development of a maximum power point tracker MPPT aimed at extracting the utmost power from the photovoltaic array. This study delves into the efficacy of a fuzzy logic controller compared to conventional controllers designed for tracking the maximum power point. The simulation model, employed for this research work, is implemented using Matlab/Simulink. a detailed comparison between the classic Perturb and Observe P.O algorithm and an other intelligent based on the fuzzy algorithm is conducted to assess MPPT accuracy. The findings demonstrate that the proposed model is characterized by simplicity and the capability to simulate diverse operating conditions.
Procurement Planning & the Rwanda Biomedical Centre (RBC)
Authors: Muberarugo Annet , Madichie Nnamdi O.
Published: November 2023

This study analysed the effect of procurement planning on the performance of public institutions using the case illustration of the Rwanda Biomedical Centre (RBC). The RBC is one of the public institutions in Rwanda with a mandate to promote health in the country. However, the institution has been marred by poor procurement practices. For example, the Auditor General’s report (2015) indicated some inconsistencies in the procurement process at the RBC. Likewise, a national daily, the _New Times_, reported that RBC was the least performer. In light of these, the study set out to achieve four main objectives: to examine the significance of a proper needs assessment on RBC’s performance; establish the effect of procurement cost estimation on RBC’s performance; assess the effect of quality specification of goods on RBC’s performance; and establish the strategies for addressing the challenges faced in the procurement planning practices at RBC.
Evaluation of technological indicators of collection varieties of oats in the Tyumen region
Authors: Ivanova Yuliya , Fomina Mariya , Bragina Mariya
Published: November 2023

Abstract. This article presents the results of a long-term study of collectible varieties of oats in the Tyumen region. The purpose of the study is to study the collection of spring oats, which forms high technological indicators, to increase grain production and to improve its quality. Materials and methods of research. The experiment was conducted in 2019–2021 in the conditions of the Tyumen Region at the experimental field of the Northern Trans-Urals Research Institute (Russia), using generally accepted methods of analysis and standard techniques. 167 varieties of oats of various ecological and geographical origins were evaluated according to the main technological indicators (grain type, weight of 1000 seeds and filminess), the Otrada variety was used as a standard. Results. A positive relationship of grain yield with the mass of 1000 seeds was established for all years of study (r = 0.21…0.45), a negative relationship was observed for all years with the film content of grain (r = –0.21; –0.31; –0.36). Regression analysis determined a significant positive effect on increasing the yield of 1000 seeds, negative – film content. Varieties of oats with a consistently high natural grain weight were identified: k-15272 (USA), 15254 (USA), k-15234 (Lithuania), k-15340 (Omsk region), weight of 1000 seeds: k-15278, (Moscow region), 15013 (Altai Krai), k-15330 (Ulyanovsk region), k-14402 (USA). As well as a low percentage of films: k-15301 (Canada), k-15272 (USA), k-15280 (Moscow region), k-15048 (Finland). The distinguished varieties of oats are particularly valuable for a number of reasons, they can be used in breeding work as sources, and they have high potential and product quality: k-15013 (Altai Krai), k-13911 (Leningrad region), k-15330 (Ulyanovsk region), k-15425 (Germany), k-15272 (USA), k-15301 (Canada). Scientific novelty. A comprehensive assessment of 167 varieties of spring oats was carried out and the most promising ones were identified, differing in the best technological quality indicators, which can be recommended in breeding work in order to improve the quality of grain, not inferior in yield.
Features of micro clone reproduction of some currant representatives of the genus Ribes spp.: review
Authors: Ryago N. V.
Published: November 2023

Abstract. Purpose. The systematization of information on the micro clonal reproduction of representatives of the Ribes spp. genus, including the rooting of micro shoots and their adaptation in ex vitro conditions. Methods. A comparative analysis was used to review foreign and domestic literature on the cultivation of berry crops using the method of microclonal propagation. Results. It is possible to increase the reproduction coefficient of healthy pure-cultivar Ribes spp. planting material in conditions of micro clone reproduction, taking into account genotypic features. Obtaining viable explants when introduced into in vitro culture is achieved, first of all, by choosing a high-quality source material, the phase of plant development during the isolation of explants and the selection of nutrient media. In addition, the positive introduction is influenced by the effectiveness and toxicity of the sterilizing agent, the fight against phenolic oxidation of explants and the medium, the range of growth regulators during the periods of the introduction, micropropagation and rhizogenesis. The greatest production losses occur at the stage of acclimatization of micro-shoots in non-sterile conditions, which is associated with the weak work of enzymes for carbon fixation in the required volumes and the unformed water regime due to the difference in the microclimate in the test tube and open ground conditions. Various technologies of adaptation of the representatives of this genus to external conditions are presented, ranging from the selection of a substrate in greenhouses to the development of special climate chambers with optimal conditions. Despite the contradictory results, the idea of the success of the use of certain preparations for Ribes spp. is expanding, the quality of the planting material is improving, however, the methodology for obtaining pure-variety planting material taking into account the varietal characteristics, has not been fully developed, and the issues of adaptation at the ex vitro stage have not been fully resolved. Scientific novelty: The review of the reports is presented taking into account new domestic and foreign scientific developments of the stages of microclonal reproduction of berry crops, depending on the species and genotypes, as well as the issue of acclimatization in ex vitro conditions is discussed.
Pengaruh Program Parenting Home Education Video Terhadap Pembentukan Karakter Anak Usia 5-6 Tahun di Taman Kanak-Kanak Hidayatullah Pesisir Selatan
Authors: Enjelina Rahayu
Published: November 2023

Latar belakang dilakukannya oenelitian ini karena karakter anak yang kurang baik, kurang sopan seperti tidak menghargai guru dan temannya, sering berkata kasar, dan ada yang sampai ke kerasan fisik di sekolah tersebut. Tujuan penelitian ini adalah guna mengetahui bagaimana pengaruh program parenting home education video terhadap penbentukan karakter anak di Taman Kanak-kanak Hidayatullah Pesisir Selatan. Jenis penelitian ini memakai pendekatan kuantitatif sementara metode quasi eksperimen. Penelitian ini dijalankan di TK Hidayatullah Pesisir Selatan.
ОСОБЛИВОСТІ НАДАННЯ ПОЛІГРАФІЧНИХ ПОСЛУГ ЗАКЛАДАМИ ВИЩОЇ ОСВІТИ
Authors: Пронько Людмила , Собітнюк Тетяна
Published: November 2023

Стаття присвячена вивченню особливостей надання поліграфічних послуг студентству та дослідженню популярності поліграфії серед студентів. Поліграфічні послуги для студентів стали не лише засобом отримання необхідної інформації, а й важливим інструментом самовираження та розвитку їхньої творчої індивідуальності. Це дослідження спрямоване на вивчення взаємодії студентів із поліграфією, зокрема на розуміння особливостей їхнього використання поліграфічних послуг, мотивацій та впливу цієї взаємодії на їхні творчі та навчальні процеси. У цьому дослідженні використовується комбінований підхід, який включає як кількісний, так і якісний аналіз даних. Визначено, що участь студентів у періодичних виданнях університету є не лише можливістю для них висловити свої ідеї та дослідження, але й важливим кроком у збагаченні академічного середовища, підвищенні академічної компетентності та сприяє створенню нових знань, які можуть мати значний вплив на розвиток суспільства.
УПРАВЛІННЯ РЕСУРСОЗБЕРЕЖЕННЯМ ПІДПРИЄМСТВА НА ЗАСАДАХ СОЦІАЛЬНОЇ ВІДПОВІДАЛЬНОСТІ
Authors: Дячков Дмитро , Баган Надія , Васильєв Володимир
Published: November 2023

У статті розглянуто однин з найбільш пріоритетних напрямів функціонування сучасного підприємства – діяльність в напрямку ресурсоощадного виробництва. Досліджено фактори, які впливають на систему управління ресурсозберігаючим розвитком підприємства. Проведено аналіз основних основні функції управління ресурсозбереженням на підприємстві. Узагальнено, що управління ресурсозбереженням доречно розглядати як процес постійного взаємозв’язку трьох складових, найважливішою з яких є екологія, управління якістю та транспортування й зберігання готової продукції. Виокремлено ефект від ресурсозбереження, який полягає в покращенні умов діяльності, збільшенні його доходів та покращенні якості продукції, для кожного з розглянутих суб’єктів-господарювання. Розглянуто основі напрями поширення соціальної відповідальності підприємства.
Polyploid plants take cytonuclear perturbations in stride
Authors: Sloan Daniel , Conover Justin , Grover Corrinne , Wendel Jonathan , Sharbrough Joel
Published: November 2023

Hybridization in plants is often accompanied by nuclear genome doubling (allopolyploidy), which has been hypothesized to perturb interactions between nuclear and cytoplasmic (mitochondrial and plastid) genomes by creating imbalances in the relative copy number of these genomes and producing genetic incompatibilities between maternally derived cytoplasmic genomes and the half of the allopolyploid nuclear genome from the paternal progenitor. Several evolutionary responses have been predicted to ameliorate these effects, including selection for changes in protein sequences that restore cytonuclear interactions; biased gene retention/expression/conversion favoring maternal nuclear gene copies; and fine-tuning of relative cytonuclear genome copy numbers and expression levels. Numerous recent studies, however, have found that evolutionary responses are inconsistent and rarely scale to genome-wide generalities. The apparent robustness of plant cytonuclear interactions to allopolyploidy may reflect features that are general to allopolyploids such as the lack of F2 hybrid breakdown under disomic inheritance, and others that are more plant-specific, including slow sequence divergence in cytoplasmic genomes and pre-existing regulatory responses to changes in cell size and endopolyploidy during development. Thus, cytonuclear interactions may only rarely act as the main barrier to establishment of allopolyploid lineages, perhaps helping to explain why allopolyploidy is so pervasive in plant evolution.
Young, Noisy and Angry: Voice of Baceprot and Feminism in Metal Band
Authors: Rahmawati Aulia , Febriyanti Syafrida Nurrachmi , Tutiasri Ririn Puspita
Published: November 2023

This paper examines the significance of the Indonesian all-female teenage metal band Voice of Baceprot (VoB) in spreading messages of empowerment and social change through music. Drawing on feminist critical discourse analysis and textual analysis, this study analysed four VoB song lyrics. The analysis reveals three central themes in VoB music: resisting systemic oppression of women, advocating for freedom of self-expression and identity, and voicing sociopolitical criticism. This paper argues that VoB’s lyrics portray empowerment as exposing and dismantling the prejudicial roots of injustice, making space for marginalised voices, and demanding human rights and equity as lived realities. The VoB suggests that empowerment requires transgressing societal constraints to integrate identity into one’s own terms. As hijabi women perform metal music, the VoB signifies the radical possibilities of claiming space through art and courage. Their songs convey that empowerment starts by refusing control and determining one's path. Despite receiving some criticism regarding the inappropriateness of Muslim women playing in a metal band, the VoB's success illuminates the possibility of change through grassroots efforts. The paper concludes that VoB's lyrics envision alternative futures by advocating justice, equality, and empowerment. Their messages make empowerment possible by calling for oppression and creating space for marginalised voices. VoB represents hope for change, driven by creativity and perseverance.
Efficacy and Safety of Combination 308-nm Excimer Laser and Intralesional Corticosteroid versus Intralesional Corticosteroid Monotherapy in the Treatment of Frontal Fibrosing Alopecia: A Pilot Study
Authors: Thuangtong Rattapon , Wongdama Supisara , Jantanapornchai Nuttagarn , Yan Chadakan , Thanomkitti Kanchalit , Triwongwaranat Daranporn
Published: November 2023

Frontal fibrosing alopecia (FFA) is a slowly progressive cicatricial alopecia that can result in permanent hair loss, so early diagnosis and treatment is crucial. However and of concern, a standard treatment regimen for FFA has not yet been established. In an attempt to remedy this gap, we conducted this study to investigate the efficacy and safety of combined 308-nm excimer laser with intralesional corticosteroid (ILC) compared to ILC alone to treat FFA. The results of our study revealed that the combination of 308-nm excimer laser and ILC was not superior to ILC alone for treating FFA. Moreover, side effects, including erythema and postinflammatory hyperpigmentation, were reported in both groups.
Systems of left translates and oblique duals on the Heisenberg group
Authors: Das Santi , Ramakrishnan Radha , Massopust Peter
Published: November 2023

In this paper, we characterize the system of left translates $\{L_{(2k,l,m)}g:k,l,m\in\mathbb{Z}\}$, $g\in L^2(\mathbb{H})$, to be a frame sequence or a Riesz sequence in terms of the twisted translates of the corresponding function $g^\lambda$. Here, $\mathbb{H}$ denotes the Heisenberg group and $g^\lambda$ the inverse Fourier transform of $g$ with respect to the central variable. This type of characterization for a Riesz sequence allows us to find some concrete examples. We also study the structure of the oblique dual of the system of left translates $\{L_{(2k,l,m)}g:k,l,m\in\mathbb{Z}\}$ on $\mathbb{H}$. This result is also illustrated with an example.
Analysis and regularities of gemstone distribution in the tectonic structures of Ukraine
Authors: Shevchenko S
Published: November 2023

Purpose. On the basis of open sources of information, perform an analysis and establish the regularities of gemstones distribution in the tectonic structures of Ukraine for expansion and sustainable development of mineral-resource base of the state. The methods. The work uses general scientific research methods – empirical and theoretical (analysis, generalization, comparison, explanation), as well as the method of gemmological evaluation of rough gemstones and predictive methods of determining the value of gemstones. Findings. The geological position and gemmological criteria of the quality of gemstone varieties of the main tectonic structures are considered: the Ukrainian Crystalline Shield, the Volyn-Podilsky Plate, the Dnieper-Donetsk Depression, as well as the Crimean and Carpathian Folded Systems. The most promising tectonic structures and investment-attractive types of gemstones for the relevant regions of the country have been determined. The analysis of formation features for mineral-resource base of gemstones of Ukraine was performed. The originality. For the first time, a regularity in the distribution of deposits and occurrences of gemstones in the tectonic structures of Ukraine was revealed. A classification of gemsstone objects has been developed, which defines the principles of economic efficiency of the involvement of gemstone resources in the economic turnover. It is shown for the first time that the expansion and sustainable development of gemstone mineral-resources base of Ukraine is based on the principle of the sequence of study of deposits and occurrences. Accounting for the results of the influence of four factors - geological, gemmological, mining and technological – gives a total effect, which is expressed in the optimization of value indicators. Practical implementation. The results of the study can be used in the planning and implementation of economic works for the development of deposits and occurrences of coloured and collectible stones of Ukraine, in particular mineral deposits, where the extraction of these resources can be carried out along the way. The preparation of scientific works and methodical developments on the issues of the gemstone mineral-resource base of Ukraine can also be based on the materials of this work.
Development of a mathematical model of the spatial motionof the tool of the generalized schemeof a drillingexecutive unitofcomplete destruction
Authors: Dovhal D
Published: November 2023

Purpose. The purpose of the work is to develop a mathematical model of the kinematics of the spatial motion of a single cutting tool of the generalized scheme of the executive unit of complete destruction. Methodology. The basis for the development of the basic generalized scheme of the kinematics of the cutting tool movement is the analytical synthesis of all existing constructive schemes of the drilling executive unit, the work of which is based on the transmission of one or more rotational movements to the tool simultaneously with the forward movement. Individual cases of structural schemes have been discovered by analyzing the possible positions of the working disk, as well as the number of movements transmitted to the cutting tool during its operation. Results. As a result of a comprehensive analysis of the kinematics of the spatial motion of a single cutting tool, the feasibility of creating a generalized scheme of its movement for a drilling executive unit of complete destruction has been substantiated. This scheme is valid for all constructive implementations of planetary and rotary executive units of mining machines. Made on its basis the analytical dependencies between constructive and kinematic parameters represent a mathematical model of a spatial motion of a cutting tool of a general scheme of a drilling executive unit of complete destruction. Received as special cases, some analytical dependencies describe the movement of the cutting tool in constructive schemes as already implemented in the existing mining machines, and also as theoretically possible. Scientific novelty. The developed mathematical model of the kinematics of the spatial motion of a cutting tool accurately describes its trajectory with any values of constructive and kinematic parameters of a drilling executive unit of complete destruction. The analysis of factors that affect the nature of the movement of the working tool allows identifying a set of generalizing parameters of the executive unit and setting the limits of their values, which define individual constructive schemes. The proposed scheme and the mathematical model of a tool motion allow carrying out theoretical studies, criterial analysis and optimization of the parameters of the executive unit in a general case. Practical significance. The model of a spatial motion of a working tool is the basis for deep and detailed applied studies of the process of its interaction with a massif that is being destroyed, on the basis of generally accepted criteria of efficiency. The results of such research allow establishing rational constructive schemes of the executive unit for the specified operating conditions and creating a scientifically grounded method of assignment of their constructive and kinematic parameters. The research of trajectory of movement and geometry of cutting allow selecting, installing and setting the tools on the working disks of the executive unit more rationally.
Influence of parameters of molding by the selective laser melting method on product quality
Authors: Sazanishvili Z , Verner I
Published: November 2023

Purpose. The development and application of additive technologies, which have a high rate of material utilization and significant production flexibility in the case of single and small-scale production, are relevant for solving various types of engineering problems. The final mechanical, technological and operational characteristics of products obtained by additive technologies are affected by a large number of initial parameters that can be varied in order to obtain the necessary properties of the material. The purpose of this work is to study the influence of the parameters of shape formation by the method of selective laser melting, in particular the scanning plan, on the quality of the material and the productivity of production. The methods. To achieve the goal, studies of the microstructure of products obtained by different scanning plans were carried out using optical microscopy, during which the shape of a single track, as well as the structure of the material in different directions of the laser beam, were analyzed. Findings. The effect of particle size, the mechanism of formation of a metal product during selective laser melting is analyzed. The influence of the scanning plan on the porosity, strength, and productivity of manufacturing by the method of selective laser melting is shown. The correct choice of technological parameters, such as the power and speed of the laser beam, the thickness of the metal powder layer, the scanning step between two adjacent single tracks, ensures the minimization of the number and size of defects (pores, cracks, shells) in the product material. The originality. The process of metal powder melting in the process of shaping products by the method of selective laser melting is analyzed. The scheme of formation of a single track is obtained in the case of choosing different scanning schemes. A list of technological parameters, the variation of which affects the properties and quality of the product, has been formed. Practical implementation. The use of additive technologies for the molding of products in single and small-batch production allows to reduce the time of production preparation and reduce the amount of waste. When choosing technological parameters, one should understand their dependence on the final properties of the finished product, because the method of selective laser melting allows to obtain products of different porosity, strength and other properties.
Application of engineering measures for the stabilization of the soil slope
Authors: Zuievska N , Shaidetska L , Kosenko T , Hutsuliak Z
Published: November 2023

Purpose. Analysis of the application of engineering measures to stabilize the soil slope with a building located near its edge using the Slide software package Methodology. To achieve this goal, calculations were made to determine the coefficient of slope stability when performing various engineering measures that would stabilize the slope and, if possible, save costs. In conditions of dense urban development, measures to stabilize the slope are chosen on the basis of not only taking into account geological conditions. It is necessary to analyze architectural solutions, landscape, the presence of neighboring structures, and so on. The method of round-the-cylindrical sliding surfaces is used, which is based on the calculation of possible sliding surfaces during displacements. The task of the calculation is to determine the stability coefficient of the slope for the most dangerous sliding surface. The results of the study. The calculated parameters of shear stability are determined: stability margin coefficient, coordinate of the sliding surface start, sliding depth, sliding surface end coordinate. To ensure the stability of the slope or slope, it is necessary that the stability margin coefficient is greater than 1, but it must be borne in mind that, depending on the class of responsibility of the structure, the required value of the stability reserve coefficient can be in the range of 1.25 – 1.80 and is regulated by the relevant type and class of construction standards (DBN). Scientific novelty. The possibility of predicting the behavior of natural slopes and artificial slopes in the process of their development and economic activity is obtained. Practical value. The used method of circular-cylindrical slip surfaces involves a large amount of monotonous calculations to determine the stability coefficient for each probable slip line and therefore the use of the software package will more effectively determine the parameters of slope stability, you can solve the issue of choosing the location of structures and designing measures to protect the territory from landslide processes on the slopes.
Prediction of chronic diseases among population caused by air emissions from mining and metallurgical plant
Authors: Rusakova T , Voitenko Y
Published: November 2023

Purpose. To analyze the species composition and volumes of pollutants that entered the atmospheric air from ArcelorMittal Kryvyi Rih during 2014–2022 and negatively affect the environment and the population living in the territory near the enterprise. Based on the two-dimensional mass transfer equation, calculate the concentration fields of the main harmful impurities and assess the risk of chronic diseases for the population that is under long-term technogenic influence. The methods. The most significant statistical indicators were used to analyze the dynamics and trends of changes in the volume of pollutants. To find the concentration fields, the analytical method of solving the two-dimensional equation of impurity transport is applied. A non-threshold risk assessment model was used to predict the risk of chronic diseases for the population from polluted air by ArcelorMittal Kryvyi Rih. Findings. On the basis of descriptive statistics, the dynamics of changes in gross emissions of pollutants into the air from ArcelorMittal Kryvyi Rih for the years 2014–2022 were analyzed, it was shown that the decrease in emissions of pollutants into the air is related to the decrease in the production volumes of the main types products, as well as with the reconstruction and decommissioning of open-hearth steel furnaces and rotary-hearth furnaces. The resulting concentration field of nitrogen oxide, sulfur dioxide, and carbon monoxide determines the areas that are most affected by the man-made load of this enterprise. The risk of chronic diseases that may appear in the population during their lifetime in this territory due to constant exposure to those harmful impurities that enter the environment in the largest volumes from this enterprise has been assessed. The originality. Trends in changes in gross emissions of pollutants into atmospheric air from ArcelorMittal Kryvyi Rih have been established. A program for numerical calculation of the concentration field was created on the basis of the method of analytical solution of the equation of steady-state transport of pollution in a two-dimensional formulation. Computational experiments were conducted for relevant harmful impurities to assess the level of concentration and the risk of chronic diseases in the population. Practical implementation. Prediction the risk of chronic diseases for the population living near the industrial enterprises is a necessary tool for assessing the level of environmental safety.
Sensorless torque and power measurement in DC electric drive
Authors: Khilov V , Fedorov S
Published: November 2023

Purpose. Determination of the resistance torque and power on the working body of the executive mechanism of the DC electric drive in order to increase the efficiency of the working body by maintaining and stabilizing the flow of mechanical power on the motor shaft at a constant level. the features of the construction and operation of specific technological mechanisms for which it is necessary to determine the torque of resistance and power on the working body of the executive mechanism. The possibilities of sensorless measurement of mechanical parameters of direct current drive systems are investigated. The resistance torque and power on the working body of the executive mechanism of the DC electric drive in order to increase the efficiency of the working body by maintaining and stabilizing the flow of mechanical power on the motor shaft at a constant level are determination. With this approach, the working capacity of the working body increases due to the maintenance and stabilization at a constant level of the flow of mechanical power on the engine shaft. Achieving the maintenance of power at a constant level allows one to implement "soft" mechanical characteristics on the working body of the drive, which under certain conditions allows one to take into account the technological features of work and increase the efficiency of the technological tool. The methods. The study was carried out on the basis of the ideas of modal synthesis of the observing device. According to this technique, an estimate for the state vector of the surveillance system is found. The state assessment was carried out on the basis of information about the input and output values of the system and its structure, which are known a priori. The use of a matrix mathematical apparatus made it possible to find the initial equations describing the dynamic processes in the control object. Findings. On the basis of direct measurements of the operating values of the voltage and current of the DC drive motor, the mechanical parameters of the technological process, such as the mechanical moment of resistance and active power on the working body, are determined, according to which the control system is synthesized and the power flow is stabilized in the working area. The originality. The dynamic parameters of the control system are set, which allow controlling the flow of mechanical power on the working body of the drive engine based on the specified torque of resistance. Practical implementation. The use of a synthesized control system allows you to reliably determine the mechanical parameters of the technological process, stabilize them at an acceptable level, which will increase the efficiency of the working body. Having determined the mechanical parameters of the technological process, it is possible to synthesize a control system with torque and power regulators, which will lead to soft mechanical characteristics.
Descriptive Epidemiology of Mental Illness and Epilepsy at the Psychiatric Hospital of Bouaké (Ivory Coast)
Authors:   Bouaké Psychiatric Hospital, Medical Sciences Training and Research Unit, Alassane Ouattara University, Bouaké, Ivory Coast, Djo Bi Djo Francois ,   Bouaké Psychiatric Hospital, Bouaké, Ivory Coast, Médard Koua Asseman ,   Bouaké Psychiatric Hospital, Medical Sciences Training and Research Unit, Alassane Ouattara University, Bouaké, Ivory Coast,   Bouaké Psychiatric Hospital, Bouaké, Ivory Coast, Soedje Kokou Mensah ,   Togo Psychiatric Hospital, Lomé, Togo, Akpa Akmé Sylvie ,   Bouaké Psychiatric Hospital, Bouaké, Ivory Coast, Dimitri-Kevin Koffi Damaukan ,   Bouaké Psychiatric Hospital, Bouaké, Ivory Coast, Yéo- Ténéna essonguilana Jean-Marie ,   Medical Sciences Training and Research Unit, Félix Houphouet Boigny University, Abidjan, Ivory Coast
Published: November 2023

Mental illness is a public health problem worldwide. As in some African countries, epidemiological data are insufficient in Côte d'Ivoire. After more than ten years of socio- political crisis, an update of the data was necessary for a better psychiatric assistance in the region of Gbêkê strongly impacted during this period. Objective: The objective of this work was to study the mental disorders observed at the Psychiatric Hospital of Bouaké. Materials and method: This was a retrospective study with a descriptive aim, involving 550 files. Results: We noted a predominance of females (51%) residing in Bouaké with an age range between 15 and 34 years (52.9%), mostly single (56.9%). 61.3% of our sample was composed of subjects with a level of education lower than secondary school and who were not in employment (37.5%). As for psychiatric pathologies, depression was the most common (21.6%), followed by acute and transient psychotic disorders (18.4%), then schizophrenia (13.1%) and epilepsy (12.2%). These results prompted a study on the evaluation of the therapeutic management of mental patients at the psychiatric hospital in Bouaké.
Aplicação da espectroscopia vibracional no infravermelho, acoplada a análises estatísticas multivariadas, para a análise dos efeitos do uso de herbicidas à base do Diuron em feijões de tipo de grão carioca
Authors: Carvalho Nínive Bastos Oliveira , Lyra Lucas Ferreira , Sakane Kumiko Koibuchi
Published: November 2023

O Diuron é um herbicida do grupo químico ureia e, mesmo sendo considerado tóxico e persistente no meio ambiente, está entre os herbicidas comercializados mais vendidos no Brasil. O objetivo deste trabalho é analisar os espectros infravermelhos de folhas de plantas tratadas por um herbicida à base de Diuron e os do herbicida em si. Para isso, foram realizados dois plantios de feijão de tipo de grão Carioca, sendo que, no primeiro plantio, o herbicida foi aplicado no solo em quantidades controladas e, no segundo plantio, o herbicida foi pulverizado nas folhas do feijão, utilizando dosagens iguais às do primeiro plantio. No primeiro plantio, foram obtidos 13 espectros no infravermelho das folhas, utilizando as técnicas de preparação de pastilhas e o espectrofotômetro Spectrum 2000, da PerkinElmer. No segundo plantio, foram obtidos 25 espectros das folhas, utilizando as técnicas de UATR e o espectrofotômetro Spectrum Spotlight 400 FTIR, da PerkinElmer. Utilizando os espectros obtidos do segundo plantio, pode-se demonstrar, que a lavagem com água das folhas pulverizadas, mostrou-se eficaz para a remoção do herbicida à base do Diuron. A banda em 1385 cm-1 mostrou-se sensível à quantidade de herbicida aplicada no solo, pois sua intensidade, somente no primeiro plantio, mostrou uma alteração significativa com a quantidade variada de herbicida aplicado. Portanto, pode-se sugerir, que a banda em 1385 cm-1 pode estar relacionada à presença do herbicida ou à alteração estrutural da planta.
The role of occupational safety in road works: Implementation of preliminary risk analysis in the execution of asphalt resurfacing
Authors: Nascimento Jéssica Wanderley Souza do , Sampaio Allefy Teles , Schuster Sílvio Lisbôa , Santos Sabiana Gilsane Mühlen dos , Umbelino Mariana Ferreira , Aguiar Francisco Allan Parente , Castro Hélio Henrique Nascimento
Published: November 2023

The aim of this research is to present, through the application of a risk analysis technique, a mapping of dangerous occurrences, the causes and consequences of the risks to which highway construction workers are exposed, as well as to recommend appropriate control measures for the case study investigated. A photographic survey was carried out on a critical stretch of road resurfacing work located on Avenida Dona Otília, in the São Pedro district of Manaus/AM. The Preliminary Risk Analysis (APR) technique was used to draw up a qualitative and quantitative opinion of each function included in the construction work process, with the aim of diagnosing the risks and finding improvements in the working conditions at each position, with a view to the well-being and protection of workers' lives. However, the survey indicated a higher incidence of physical risks, especially in the role of paver operator. It is therefore necessary to introduce an accident prevention policy, training workers to recognize potentially dangerous situations before accidents or near misses occur, and to keep records of both. Another important measure is to check the condition of EPI and implement equipment control sheets. The risk of being run over was observed in all functions, and it is important that there is adequate signage for employees on the road, the works and the maximum speed allowed on these stretches.
A importância de estratégias facilitadoras no tratamento odontológico em pacientes acometidos com Transtorno do Espectro Autista (TEA)
Authors: Silva Danilo Reginaldo da , Lima Janio Nunes de , Mendes Cácio Lopes
Published: November 2023

Introdução: É fundamental a busca constante por alternativas que acolham os pacientes autistas, aplicando estratégias que auxiliem na comunicação com os mesmos, ponderando métodos verbais, não verbais, ilustrativos, sensoriais. Objetivos: o presente trabalho tem por objetivo maior destacar a importância do uso de estratégias facilitadoras no tratamento odontológico em pacientes com TEA, através de revisão de literatura, otimizando a qualidade do atendimento com portadores do espectro autista, e instruindo profissionais e pais.  Materiais e Métodos: É baseado em uma pesquisa bibliográfica do tipo revisão de literatura integrativa sobre a utilização de técnicas e estratégias para facilitar o atendimento odontológico de pacientes autistas. Revisão de literatura: é reportado que algumas técnicas facilitam ainda mais a consulta, elas recebem o nome de básicas e avançadas. Considerando como básicas, aquelas que envolvem comunicação não verbal, distrações, oferecimento de recompensas. Já as avançadas, incluem anestesia geral, uma alternativa bastante eficaz para procedimentos invasivos. Conclusão: Cada tratamento deve ser individualizado, através de suas necessidades, buscar sempre se enquadrar no mundo do paciente com TEA, trazendo inovações que reduzam os desconfortos na hora da consulta.