bluuebunny/crossref_metadata_2025 huggingface dataset:
Justification of the maximum single maximum permissible concentration of dimethyl sulfoxide in the atmospheric air of urban and rural settlements
Authors: Novikova Irina I. , Ogudov Aleksandr S. , Chuenko Natalia F. , Bolshakov Vyacheslav S. , Kozyreva Fatima U. , Bokareva Natalia A.
Published: January 2024

Introduction. Atmospheric air pollution by volatile sulfur compounds is one of the most urgent environmental and hygienic problems. However, the maximum single maximum permissible concentration (MPC) of dimethyl sulfoxide in the atmospheric air of urban and rural settlements has not yet been established.
The study aims to substantiate the maximum single maximum permissible concentration оf dimethyl sulfoxide in the atmospheric air of urban and rural settlements.
Materials and methods. White mongrel male rats weighing 180–240 gr., dimethyl sulfoxide (DMSO), CAS No. 67-68-5. The authors conducted the study in accordance with the current regulatory, methodological and instructional documents. Experts conducted surveys of experimental animals according to a generally accepted and unified methodology. Statistical processing of the research materials was carried out using standard Statistica 10.0 application programs.
Results. During the study of dimethyl sulfoxide, researchers found that the threshold of acute inhalation general toxic effect (Limac) is a concentration of 2.4±0.09 mg/m3, the threshold of irritant effect (Limir) is 0.6±0.03 mg/m3, the odor threshold (Limolf) is 1.741 mg/m3. Unpleasant odors and general toxic effect of the substance are prevented by a concentration of 0.6 mg/m3, irritant effect — a concentration of 0.3 mg /m3.
Conclusion. In accordance with the principle of the limiting index of harmfulness, a concentration of 0.3 mg/m3 is recommended as the concentration of dimethyl sulfoxide (DMSO) in the atmospheric air, which prevents odors, general toxic and irritating effects.
Ethics. The material of the article was approved by the Ethics Committee at the Novosibirsk Research Institute of Hygiene of Rospotrebnadzor (No. 1 of January 21, 2022).
Hygienic assessment of the chemical factor of working conditions and respiratory disorders in metalworking workers
Authors: Raikova Svetlana V. , Novikova Tamara A. , Komleva Nataliia E. , Mazilov Svyatoslav I. , Trubetskov Alexey D.
Published: January 2024

The study of the function of external respiration for the purpose of prenosological diagnosis of respiratory pathology related to work is an urgent task in the development of measures for the prevention of health disorders in
workers.
The study aims to conduct a hygienic assessment of the chemical factor of working conditions and indicators of respiratory function in metalworking workers engaged in the metalworking process using lubricant cooling liquids.
We have examined 250 male workers of the Saratov metalworking enterprise. The main group consisted of 145 people working in contact with lubricants and coolants, the control group consisted of 105 people not in contact with lubricants and coolants. The researchers have conducted a hygienic assessment of the chemical factor of working conditions in the workplace and a spirometric study of the function of external respiration in workers. The results of the study were statistically processed using the Statistica 10 program. The concentrations of chemicals in the workers' breathing zone comply with the hygienic requirements for the air of the working area corresponding to permissible working conditions (Class 2). According to spirometry data, the researchers have identified respiratory function values corresponding to the appropriate values, in the absence of statistically significant differences in spirometric indicators between the main and control groups.
To identify the etiological contribution of chronic exposure to lubricants and coolants to the formation of respiratory pathology of workers, it is necessary to conduct additional in-depth clinical, laboratory, functional and epidemiological studies taking into account pollutants present in the air of the working area and their combined effects.
Ethics. The studies were conducted in compliance with Ethical standards and principles of conducting medical research with human participation, set out in the Helsinki Declaration of the World Medical Association (ed. 2013). Written consent of respondents was obtained to participate in the study. The study was approved by the local Ethical Committee of the Saratov Hygiene Research Center of the Federal State Budgetary Institution "Federal Research Center for Medical and Preventive Technologies of Public Health Risk Management" (Protocol No. 10 of 03/16/2023).
Evaluation of the effectiveness of personal protective equipment and their impact on the health of medical workers
Authors: Bukhtiyarov Igor V. , Kovalevsky Evgeny V. , Tskhomariia Irakly M.
Published: January 2024

Studies in the area of assessing the effectiveness and consequences of the use of personal protective equipment (including respiratory protection) has always been the subject of attention in occupational medicine. These problems have become particularly relevant during the COVID-19 pandemic. Assessing the effectiveness of personal protective equipment against viruses is complicated by the lack of uniform standardized approaches. It is also necessary to take into account the possible negative effects of personal protective equipment on the health and well-being of healthcare workers due to their frequent and prolonged use. Existing data assessing the effectiveness of masks and respirators indicate some effectiveness of personal protective equipment against viruses, but prolonged use negatively affects the health of workers. It is necessary to continue studies in these directions, improving the methodology. Measures are needed to reduce or prevent the occurrence of negative effects as a result of the use of personal protective equipment, including the creation of favorable working conditions, prevention and treatment of possible changes in health status.
Assessing the parameters of electromagnetic fields and microclimate in the radionuclide department of the positron emission tomography centre
Authors: Zabroda Nadezhda N. , Zhernov Yury V. , Zakharova Anastasia V. , Matkevich Еlena I.
Published: January 2024

Currently, in the Russian Federation there is an increase in the number of positron emission tomography scans. As a result, the collective dose from radionuclide diagnostics in 2021 compared to 2020 increased by 62.0%, the average effective dose per one study in positron emission tomography (PET) centres of Moscow from 2015 to 2019. increased from 1.71 to 4.41 mSv. This leads to an increase in radiation doses not only for patients, but also for medical workers, and makes it urgent to develop modern effective measures to prevent the adverse effects of ionizing radiation.
The aim of the study is to evaluate the parameters of electromagnetic fields and microclimate in the premises of the radionuclide department of the PET centre.
During the study, in the main working areas of the radionuclide department, the following levels were assessed: the strength levels of electric and magnetic fields of industrial frequency, relative humidity, temperature and air speed using generally accepted measures in occupational hygiene.
zThe main parameters of electromagnetic fields and microclimate (temperature, humidity, air speed) comply with hygienic standards in industrial workplaces. At the same time, in certain working areas of the radionuclide department, higher levels of electromagnetic fields were recorded, as well as a decrease in relative humidity and air velocity.
Monitoring the parameters of electromagnetic fields and microclimate is important for improving the working conditions of medical workers in the radionuclide department of the PET centre, which helps maintain the functional state of workers at a high level, increases concentration and accuracy of movements, increases the speed of work manipulations, and reduces the time of contact with radionuclides when administered to patients and thereby reduce the dose load on health workers.
Ethics. The study does not require the opinion of this committee.
Analyze the shaping characteristics of micro-cylindrical-post in manufacturing process of a superhydrophobicity film
Authors: Pham Anh-Duc
Published: January 2024

Superhydrophobic films (SHF) have recently increased in routine due to their non-wettable capacity. Superhydrophobicity can be occurred by making a micro-structural-post on materials with the surface having a low energy level. Thus, the shaping characteristics of the micro-structural-post should be considered. This paper analyzes the influence and evaluates the characteristics of micro-cylindrical-post having different parameters to the superhydrophobicity of PUA film. Firstly, the structure and characteristics of Polyurethane Acrylate (PUA) material are introduced. Moreover, the manufacturing process to create the micro-cylindrical-post on PUA film is illustrated. Finally, the influence of the different shaping parameters of micro-cylindrical-post on the superhydrophobicity of PUA film is evaluated and analyzed.
Extend low-power LoRaWAN coverage device for IoT applications
Authors: Lic Tran Van , Hien Thai Vu
Published: January 2024

The advent of Long Range Wide Area Network (LoRaWAN) has significantly enhanced Internet of Things (IoT) applications, particularly in Smart Cities, with its broad coverage and energy efficiency. However, in areas with blind spots and obstacles, the conventional star network has limitations in coverage. To overcome this, researchers conducted a study to explore the potential of LoRaWAN extenders with multiple relays, focusing on coverage, performance, and power consumption. The study involved designing and deploying a relay system aligned with protocol of LoRaWAN to extend the reach of a standard LoRaWAN gateway. Strategically placed relays addressed areas beyond the gateway's coverage. Performance was measured by the longest communication distance achieved by each relay, packet loss ratio, and latency. Power consumption was also monitored. The results demonstrate the practicality and effectiveness of the proposed multiple relay design, expanding the capabilities of LoRaWAN network.
Building fungi identification key for the main fungi of the ganodermataceae (donk) donk. in Son Tra, Danang city
Authors: Phu Tran Thi , Hanh Do Hong
Published: January 2024

The Ganodermataceae garners considerable attention owing to its medicinal properties and ecological significance. Although numerous authors have focused on studying the Ganodermataceae in Central Vietnam, specific research on the Son Tra in Danang City still needs to be conducted. This study collected from various locations across the Son Tra. Subsequently, prompt processing and microscopic analysis of morphological and structural features were conducted. Based on these analyses, an identification key was developed to classify the mushrooms at the genus and species levels. The identification process revealed 38 species belonging to the Ganodermataceae, encompassing three genera (Ganoderma, Amauroderma, and Haddowia). Among them, the genus Ganoderma exhibited the highest species richness with 29 identified species, followed by Amauroderma with 8 species, and Haddowia with 1 species. Furthermore, the authors described certain biological characteristics of the common species and compared the diversity of Ganodermataceae in Vietnam and neighboring regions.
The cytotoxic activity of lignans and monoterpenoids from the male carica papaya flowers on A549 lung cancer, Hep3B liver cancer, and MCF-7 breast cancer cell lines
Authors: Van Do Thi Thuy
Published: January 2024

Two lignans (lariciresinol (1) and dehydrodiconiferyl alcohol (2)), and four monoterpenoids (vitexoid (3), 6-hydroxy-2,6-dimethyl-2,7-octadienoic acid (4), 6-hydroxy-2,6-dimethyloct-7-enoic acid (5), 2,6-dimethylocta-2,7-diene-1,6-diol (6)) from the male Carica papaya flowers are conducted a cytotoxic activity for lung cancer cells (A549), liver cancer cells (Hep3B), and breast cancer cells (MCF-7). The results, lignan (1), and monoterpenoid (3), (6) exhibited medium cytotoxic activity on these cancer cells with IC50 from 34.73±1.55 to 66.12±5.60 µg/mL. Lignan (2) displayed medium cytotoxic activity on MCF-7, Hep3B with IC50 60.85±4.43, 62.32±5.03 µg/mL, respectively, and weak cytotoxic activity on A549 with IC50 70.99±7.26 µg/mL. Monoterpenoids (4), and (5) showed medium cytotoxic activity on MCF-7 with IC50 54.15±5.89, 67.49±2.41 µg/mL, respectively, and weak cytotoxic activity on A549, and Hep3B with IC50 from 72.25±3.13 to 86.03±7.57 µg/mL. Ellipticine was a positive control.
Proto-Slavic “reduced” sounds and the vowels u and i in the Slovenian dialect of Valburga: some parallels
Authors:   Institute of Slavic Studies, Russian Academy of Sciences, Saenko Mikhail
Published: January 2024

The literature on Slavic jers is vast, and the history of change in views on these sounds could be a topic of a separate monographic study. In this article, we will try to shed light only on some controversial aspects of the theory of “reduced” sounds and present our own interpretation. Our view will be supported by material from the Slovenian Upper Carniolan dialect of the village of Valburga. While some parallels between the fates of Proto-Slavic “reduced” sounds and Slovenian u and i have already been noted in the literature, to date a detailed comparison has not been made.
On the Substantive Suffix -ой- in the Russian Dialects
Authors:   Institute of Slavic Studies, Russian Academy of Sciences, Shalaeva Tatiana
Published: January 2024

The paper deals with description of the substantive suffix -ой- in the Russian lexicon. In particular, concrete examples show its functions, underlying stems in the words which include it and their word-formation variations. New versions of the origin of some words which might include the suffix -ой- are given on the basis of presented material. For instance, suffix -ой- is assumed in such names of St. John’s wort (Hypericum perforatum) as свербо́й, сверебо́й, сверобо́й, своробо́й, зверьбо́й, зверебо́й, зверобо́й.
Central Russian dialects: a comparative description of the center and the periphery
Authors:   Vinogradov Russian Language Institute, Russian Academy of Sciences, Bukrinskaya Irina , Karmakova Olga ,   Vinogradov Russian Language Institute, Russian Academy of Sciences
Published: January 2024

The paper presents a comparative study of two modern Central Russian dialects, the eastern (with okanie) and the Western (with akanie). Their features are considered not only against the background of the opposition of the western and eastern Russian dialect continuum, but also from the point of view of the opposition of central and peripheral dialects. The eastern idiom, located in the Volga-Oka interfluve, belongs to the core of the center zone and has a number of features that coincide with the literary language, which is based on the dialects of the specified territory. The western idiom is characterized by signs of peripheral dialects, as well as northwestern and western dialect zones. From a historical point of view, the eastern dialect tends to the Rostov-Suzdal dialect, and the western dialect tends to the Novgorod–Pskov dialect. The material shows that the dialect features that contrast the central (eastern) and peripheral (western) dialects are well preserved at all language levels.
Some aspects of the study of Russian dialects of Ladoga and Obonezhye
Authors:   Institute of Slavic Studies, Russian Academy of Sciences, Myznikov Sergey
Published: January 2024

The article offers an introduction to the study of Russian dialects of Obonezhye and Ladoga regions, presented in the future book “Russian dialects of Obonezhye and Ladoga region in the context of ethno-linguistic contacts: texts, dictionary, atlas” (ready for publication). The work is based on the results of a more than twenty years’ survey of dialects of the region. The geography of the study is concentrated within the former Olonets, Novgorod, Petrograd provinces (nowadays Leningrad, Vologda, Arkhangelsk regions, the Republic of Karelia). The paper presents a brief analysis of A. S. Gerd’s works dedicated to the ethno-linguistic history of the region. Textual examples of informants’ descriptions of important dialectal realities characteristic of dialects with a Baltic-Finnish substratum are given. The material is also presented in the traditional form of a dictionary. The dictionary includes units that are noted in the dictionaries of the literary language, if, in our opinion, they reflect the pecularities of the material or spiritual culture of the region. In addition, the author proceeded from the premise that many lexical units of the literary language and the corresponding words in Russian dialects, with a common semantic dominant, often have different semantic volumes and places in lexical systems. Much attention in the dictionary is paid to onomastic data, and for a more obvious identification of systemicity, a number of toponymic units is presented in the form of frequency determinants. The lexical data in the area under study found linguogeographical representation, the maps were prepared, giving us a very interesting picture of lexical manifestation.
Gender Inequality in the Age of AI: Predictions, Perspectives, and Policy Recommendations
Authors: Yu Chen
Published: January 2024

This article, "Gender Inequality in the Age of AI: Predictions, Perspectives, and Policy Recommendations," offers a comprehensive examination of the potential effects of artificial intelligence (AI) on gender inequality. It delves into the various ways AI could influence gender dynamics in the workforce, educational access, and the balance between work and caregiving responsibilities. By analyzing historical and societal norms, structural barriers, intersectionality, and the role of technology, the article provides a nuanced understanding of the root causes of gender inequality. It then presents predictions on how AI may both exacerbate and mitigate these disparities in the future. The potential benefits of AI for gender equality are weighed against the risks and challenges it poses, leading to a discussion on the necessity of ethical AI development and deployment. The article concludes with a set of policy recommendations designed to promote diversity and inclusion, establish ethical guidelines for AI systems, and invest in education. These recommendations aim to guide stakeholders towards a future where AI contributes positively to gender equality rather than reinforcing existing inequities.
Do Grids Demobilize? How Street Networks, Social Networks, and Political Networks Intersect
Authors: Nathan Noah
Published: January 2024

Amid rapid urbanization in the developing world, there is growing interest in the effects of urban context on political behavior. An underexplored element of urban context is the built environment itself – the physical architecture and design of urban space – which can structure how residents interact both with each other and with the state. Drawing on street network data and an original survey from urban Ghana, I suggest that more gridded, orderly neighborhoods reduce the social interactions residents have with neighbors, lower embeddedness in political problem solving networks, and depress electoral turnout. Rather than making residents more legible to state officials, gridded streets make the local state and political realm less legible to residents by reducing opportunities to forge politically-valuable social ties in a context of clientelist politics. The paper demonstrates that greater focus is needed on built environments to understand the social structures undergirding grassroots urban politics.
Aprendizaje Basado en Problemas: Estimación Óptima para evaluar una técnica de inversión basada en Monte Carlo
Authors: Otero Fernando , Managó Bianca Bietti
Published: January 2024

In this work, we propose, design, and implement a solution to a problem of evaluating a numerical method. Thisproblem was conceived with the intention of applying the methodology of problem-based learning (PBL) inpostgraduate students of a course called "Applied Mathematics to Indirect Measurements". The main objective is forthe student to understand and relate several fundamental concepts that appear in the problem at hand, withoutadding additional complications in the development of the code. Therefore, a linear toy model with a single randomvariable is considered. The specific problem is the study of the performance of a sequential Monte Carlo (SMC)method, developed by the authors in the field of inverse problems, through the estimation of the method's tuningparameter. To do this, a supervised classification is proposed that use as training data those generated by the optimalestimation (OE) method. The idea of the work is that students, through the developed code, can analyze how thetopics of two very important areas of applied mathematics today, namely, inverse problems (IP) and machinelearning (ML), are integrated in practice through a Bayesian approach, such as the OE method.
Same same but different – The graded influence of vowel quality and prosodic prominence on letter detection
Authors: Hasenäcker Jana , Domahs Frank
Published: January 2024

The present study investigates the impact of phonetic realization and prosodic prominence on visual letter identification, focusing on the letter in German bisyllabic words. Building upon previous research, a computerized letter search task was conducted with 78 skilled adult readers. Words featuring different phonetic realizations of (/eː, ɛ, e, l̩ , n̩ , ɐ/) in stressed and unstressed first and second syllables were systematically included. Analyses of error rates and response times revealed a graded pattern in detection of , with the closed long (/eː/) and closed short (/e/) realizations being easiest to detect, open (/ɛ/) and near-open central (/ɐ/) vowels becoming incrementally harder, and silent vowels in syllabic consonants (/n̩ /) being the most challenging. Results divided by position and stress of the syllable containing the target letter further indicated influences of prosodic prominence. The findings contribute to understanding the intricate interplay of grapheme-phoneme correspondences and prosodic structure in skilled readers' visual letter recognition.
Harm-to-self from gambling: A national study of Australian Adults
Authors: Tulloch Catherine , Hing Nerilee , Browne Matthew , Russell Alex M T , Rockloff Matthew , Rawat Vijay
Published: January 2024

Aims. Understanding how gambling harm is distributed is essential to inform effective harm reduction measures. This first national Australian study of gambling harm-to-self examined the extent, distribution, risk factors, and health related quality of life impacts of this harm.Methods. A Random Digit Dialling sample of 15,000 Australian adults was weighted to key variables. Key measures included the Gambling Harms Scale-10 (GHS-10), PGSI, SF-6D, gambling behaviours, and demographics. Analyses included ordinal logistic regression. Results. Amongst gamblers, 14.7% reported harm on the GHS-10, including 1.9% reporting high-level harm. While high-level harm occurred mainly in the problem gambling group (77.3%), other PGSI groups accounted for most of the more prevalent low (98.5%) and moderate (87.2%) harms reported. Proximal predictors of greater harm were use of online gambling and more frequent gambling on electronic gaming machines (EGMs), race betting sports betting, poker, skin gambling, scratchies, and loot box purchasing. Distal predictors were being younger, male, single, Aboriginal or Torres Strait Islander, and speaking a non-English language at home. At the population level, the greatest aggregate HRQoL impacts were amongst lower-risk gamblers, confirming the results of other studies regarding the ‘prevention paradox’. Conclusions. The distribution of harm across gambler risk groups indicates the need for preventive measures, not just interventions for problem gambling. Reducing harm requires modifying product features that amplify their risk, especially for EGMs, race betting and sports betting that are both inherently risky and widely used. Gambling harm exacerbates health disparities for disadvantaged and vulnerable groups, requiring targeted resources and support.
Social perspective-taking influences on metacognition
Authors: Battich Lucas , Pacherie Elisabeth , Grezes Julie
Published: January 2024

We often effortlessly take the perceptual perspective of others: we represent some aspect of the environment that others currently perceive. However, taking someone's perspective can interfere with one's perceptual processing: another person's gaze can spontaneously affect our ability to detect stimuli in a scene. But it is still unclear whether our cognitive evaluation of those judgements is also affected. In this study, we investigated whether social perspective-taking can influence participants' metacognitive judgements about their perceptual responses. Participants performed a contrast detection task with a task-irrelevant avatar oriented either congruently or incongruently to the stimulus location. By "blindfolding" the avatar, we tested the influence of social perspective-taking versus domain-general directional orienting. Participants had higher accuracy and perceptual sensitivity with a congruent avatar regardless of the blindfold, suggesting a directional cueing effect. However, their metacognitive efficiency was modulated only by the congruency of a seeing avatar. These results suggest that perceptual metacognitive ability can be socially enhanced by sharing perception of the same objects with others.
Individual gaze predicts individual scene descriptions
Authors: Kollenda Diana , Reher Anna-Sophia V. , de Haas Benjamin
Published: January 2024

Do different people looking at the same scene perceive individual versions of what’s in front of them? If perception is individual, which mechanisms mediate our particular view of the world? Recent findings have shown systematic observer differences in gaze, but it is unclear whether individual fixation biases translate to divergent impressions of the same scene. Here, we find systematic differences in the scene descriptions individual observers provide for identical complex scenes. Crucially, observer differences in fixation patterns predicted pairwise differences in scene descriptions, particularly the use of nouns, even for out-of-sample images. Part of this could be explained by the individual tendency to fixate text and people predicting corresponding description references. Our results strongly suggest that subjective scene perception is shaped by individual gaze.
I Think You Might Like Me: Emergence and Change of Meta-Liking in Initial Social Interactions
Authors: Bleckmann Eva , Rau Richard , Carlson Erika , Wagner Jenny
Published: January 2024

Feeling accepted by others is a fundamental human motive and an important marker of successful social interactions. This interpersonal perception, known as meta-liking, is especially relevant during adolescence when peer relationships deepen and expand. However, knowledge is limited regarding meta-liking formation in initial social interactions. This study investigated whether adolescents (N = 293, Mage = 15.48, 61.10% female) have default expectations for meta-liking at zero-acquaintance and how these judgments are updated during initial group interactions. Specifically, we used latent change models to examine how personality traits predicted initial meta-liking and whether personality and social interaction experiences were linked to changes in meta-liking judgments throughout an interaction. Our findings revealed three key insights: First, meta-liking increased gradually over the course of the interaction, with substantial individual differences in both default meta-liking and change scores. Second, extraversion, neuroticism, and self-esteem predicted initial meta-liking. Third, liking others was also linked to initial meta-liking and early changes, while meta-liking changes toward the end of the interaction occurred independent of all these features and were not predicted by expressive behaviors of interaction partners. This study represents a first empirical test of default expectations and updates in meta-liking based on personality characteristics and social interaction experiences in initial social interactions. We discuss our results in terms of a broader framework for understanding how metaperceptions are formed and updated early in the acquaintance process.
Sistem Penunjang Keputusan Seleksi Produk Dengan Metode Analytic Hierarchy Process (AHP) Pada CV. Gambir Kuning
Authors: Handayani Wahyu , Dari Wulan
Published: January 2024

Pada umumnya semua bisnis memiliki tujuan dan sasaran yaitu untuk berhasil dalam mengembangkan usahanya. Saat ini, segala macam aktivitas manusia dapat dilakukan dengan cepat dan mudah dengan bantuan komputer. Oleh karena itu, empat kata kunci harus diperhatikan, yaitu metode ilmiah, data, tujuan dan kegunaan. Metode ilmiah berarti bahwa kegiatan penelitian didasarkan pada karakteristik ilmiah yang rasional, empiris dan sistematis Sistem Penunjang Keputusan Seleksi Produk Terbaik Dengan Menggunakan Metode Analytical Hierarchy Process (AHP) pada CV.Gambir Kuning” adalah sebagai berikut :Sistem pendukung keputusan yang dibangun dengan menggunakan metode AHP ini dapat membantu mempermudah dan mempercepat menentukan seleksi produk terbaik, yaitu dilakukan dengan beberapa tahapan sebagai berikut : decompotition, comparative judgement, synthesis of priority dan logical consistency. Tingkat keakuratan dalam menentukan seleksi produk terbaik dengan menggunakan metode AHP ini dapat dinilai dari Consistency Ratio Hierarchy / CRH 10% atau 0,1 maka hasil perhitungan dapat dinyatakan benar, dalam perhitungan Consistency Ratio Hierarchy / CRH adalah 0,026 atau 2,6 % itu artinya nilai dapat diterima dan hasil perhitungan dinyatakan benar.Berdasarkan vektor eigen keputusan diperoleh hasil sebagai berikut: Fiesta memiliki nilai yang tertinggi yaitu 0,506/51%,Okey memiliki nilai kedua tertinggi yaitu 0,273/28%, Champ memiliki nilai terendah yaitu 0,208/21%. Sehingga bisa disimpulkan Seleksi Produk Terbaik pada CV.Gambir Kuning adalah Fiesta.
Analisis Respon Siswa Terhadap Efektivitas Pembelajaran Matematika Kelas 10 Menggunakan Video Conference
Authors: Prazella Thalia , Pujiastuti Heni
Published: January 2024

The COVID-19 pandemic changed the offline learning system to online learning. Video conferencing can help teachers and students in the teaching and learning process to replace face-to-face learning into online. The purpose of this study was to find out how the effectiveness of learning mathematics using Video Conference during online learning. The research method used is a descriptive method using a survey method by describing student responses during learning using Video Conference and the results of the analysis to make conclusions. Video conferencing is effective in helping the teaching and learning process during online learning conditions.
Keyword: Response, Video Conference, Mathematics, Online Learning
THE STORY OF ONE BURIAL...
Authors: Cyrek Krzysztof
Published: January 2024

In brief, the article tells the story of the research on the famous Mesolithic grave in Janisławice – from its discovery in 1937 and the monographic publication of Maria Chmielewska in 1954; through the repeated analyses and verifying field studies of K. Cyrek in the years 1978–1995, and a number of expert analyses that involved modern technologies; lastly, to the exposition organised in the State Archaeological Museum (PMA) presenting, among others, the most recent findings about the assemblage from Janisławice. Many years of studies conducted by over ten researchers of various specialties verified the previous findings, confirming them for the most part. Janisławice can be interpreted as an isolated burial of a man about 30 years of age who most likely, hunting aside, was also obtaining chocolate flint in the older stage of the Atlantic period.
Acoustical Characterization
Authors: Ravnik Franc , Grum Janez
Published: January 2024

This article discusses an experimental setup and a measuring setup for capturing acoustic emission during quenching. It presents the procedure for sound-emission measurement and an analysis of the acoustic spectrum obtained during quenching.
Agitator and Fluid Mixing Fundamentals for Quench Tank Applications
Authors: Csiszar Pete
Published: January 2024

The role of a mixer/agitator in quenching applications is to control the mixing environment in order to meet the process criteria. This article provides the basic fundamentals of the sizing of agitators, tank geometry importance, and other considerations for the application of agitators in quench tanks. It also discusses the differing methods for the sizing and selection of agitators for quench tank applications.
Advanced Industrial Quench System Design—Fluid Dynamics Analysis
Authors: Acosta-González Francisco Andrés
Published: January 2024

Computational fluid dynamics (CFD) provides an efficient, alternate, virtual approach for simulating and analyzing quenching processes with an impact on component design, manufacturing process, and quality. This article provides domain insights for quenching researchers and CFD practitioners for the modeling of the industrial quenching process and for supporting the diverse multifunctional needs in an industry, ranging from primary metallurgical companies (steel, aluminum, and other alloys), original equipment manufacturers, engineering companies, captive and commercial heat treating facilities, quench system manufacturers, and quench fluid suppliers. It describes the governing differential equations for the fluid flow and heat-transfer phenomena during quenching. The article also discusses different modeling categories to determine a CFD methodology for quenching.
Культурная идентичность общества как теоретическая проблема
Authors: Сагикызы А. , Жиренова А.Т. , Абеуова Ш.К.
Published: January 2024

Статья посвящена анализу феномена культурной идентичности. Но прежде чем приступить к её анализу, рассмотрен феномен идентичности как таковой. Выявлено, что в казахстанской философии столкнулись две позиции по вопросу о логическом основании понятия идентичности и концепции идентичности, применяемые в социальной философии, социологии, психологии и т. д. Согласно одной позиции, таким основанием является формальная логика, согласно другой, им вполне может быть и диалектическая логика. Однако нынешнее состояние социальной философии и т. д. таково, что в решении своих проблем они ещё не поднялись до диалектической логики. Анализ концепций культурной идентичности показал, что их авторы толкуют эту идентичность как всего лишь феномен сознания. Обосновано положение о том, что данный вид идентичности (как и всякая другая идентичность) — феномен объективно-субъективный. По мнению авторов, существуют и объективные идентичности, которые являются первичными относительно субъективных идентичностей, так как они формируются в реальной жизнедеятельности людей в культуре. А субъективные идентичности являются продуктом идентификации и самоидентификации. Культурные идентичности неразрывно связаны с другими идентичностями, такими как политические, правовые и религиозные. Они образуют целостность, где между ними существуют отношения координации и субординации. В культурных идентичностях можно выделить как ценностно нейтральные, так и ценностно нагруженные.
Искусство как важная составляющая духовного воспитания личности
Authors: Попандопуло М.П. , Аубакирова С.С. , Искакова З.С. , Мукатова Д.Р.
Published: January 2024

В статье рассмотрены вопросы о роли искусства. Объектом исследования авторы определили художественную мировую культуру, художественную культуру Республики Казахстан и культуру Павлодарского Прииртышья. Исходя из объекта исследования, нами был определен предмет научного труда — искусство как важная составляющая духовного воспитания личности. Цель исследования состоит в том, чтобы показать, как средствами искусства можно научить человека правильно, эстетически воспринимать как явления действительности, так и само художественное творчество. Человеческая жизнь проходит среди огромного количества разнообразных произведений искусства, и они в той или иной степени воздействуют на человека. Искусство и прекрасное неотделимы друг от друга, ибо прекрасное в искусстве есть отражение красоты самой действительности. Человек, воспитанный на передовых достижениях искусства и культуры, воспринимает прошлое вернее и глубже, умеет лучше использовать его для своего дальнейшего развития. Лучшие произведения искусства учат людей правильно понимать и совершенствовать жизнь, помогают усваивать передовые идеи, формируют их характер. Период, охватывающий вторую половину ХХ столетия, является для региона Павлодарского Прииртышья расцветом всех основных видов и жанров искусства, высоким профессиональным мастерством художников, музыкантов, актеров, литераторов, архитекторов. Руководствуясь культурной политикой, они определяли задачи и направления в области культурного строительства, заботились о выращивании кадров, формировали мировоззрение художественной интеллигенции.
Analysis of Precision and Stability Tests of the Doce Calibrator CRC-25R
Authors: Novitasari Feni Eka , Adrianus Inu Natalisanto  , Devina Rayzy Perwitasari  , Retno Zurma
Published: January 2024

Dose calibrator is a measuring tool that is widely used in hospitals to determine radionuclide activity in nuclear medicine services. In determining this activity it has several factors; namely precision, accuracy and stability which is become depining factor of the tool suitability. The aim of this research is to determine the level of precision, accuracy and stability of the Capintec dose calibrator type CRC-25R with an I-131 source and a standar Cs-137 source at the Nuklear Medicine Installation of RSUD A.W. Sjahranie Hospital Samarinda. Data processing in this research was carried out using quantitative analysis tecnhniques, namely descriptive statistics. This analysis technique use primary data obtained from direct measurements of radionuclide activity. Data processing was carried out by measuring radionuclide activity, namely source I-131 and standard source Cs-137 of 0,1 ml using a Capintec type CRC-25R for 7 days. These results are visualized in the form of tables and graphs of precision, accuracy and stability tests from both source with predetermined limits. Base on this research, it can be concluded that if we look at the precision, accuracy, and stability test using I-131 source anda Cs-137 standard source on the Capintec type CRC-25R at A. W. Sjahranie Samarinda Hospital, it can be used to measure a constant source over a long periode of Long time.
An interpretation of data after performing Step-rate-test in multi-layered, unconsolidated and weakly consolidated reservoirs
Authors: Alekberov R. R. , Volf A. A.
Published: January 2024

The prerequisite for this study is the difficulty in interpreting data after stimulation of the bottomhole formation zone has been carried out. The objectives of this work are the applicability and interpretation of Step-rate-test (SRT) data to evaluate suitable injection regimes in multilayered, unconsolidated and weakly consolidated reservoirs and the demonstration of the correlation between injection rate and pressure in a graphical format. We investigated the stability of the reservoir structure to pressure gradients by increasing pressure and injecting fluid through the injection well stock. We concluded that this stability does not improve over time. This means that the practical significance of this method lies in its ability to alter the pressure gradient when injecting fluid to maintain a constant flow rate. The constancy of the pressure gradient has a major impact on the stimulation of the bottomhole formation zone and therefore it can be concluded that the reservoir properties in the bottomhole formation zone are dynamic in nature and can change over time. It should be noted that the study found that a change in pore pressure within the loose rock can also affect the phase (effective) permeability, which in turn can affect the required pressure gradients during injection.
Multiphase friction calculation peculiarities based on models implemented in the "d-Flow" software package
Authors: Matroshilov N. O. , Krylov A. M. , Kozlov M. G. , Lyhin P. A. , Usov E. V. , Tailakov D. O. , Ulyanov V. N.
Published: January 2024

In order to ensure efficient and safe operation of oil and gas fields, a tool is required to design production wells and surface infrastructure. It is important to take into account the physical processes that occur during production, as well as fluid properties and phase transitions. The "d-Flow" software package enables the creation of a comprehensive field model based on geological and field data to calculate hydraulic losses of pipelines and forecast hydrocarbon production. The fluid flow modelling is based on the calculation of multiphase friction with the wall of a well or a pipeline.

                The article discusses the implementation of four friction models: the Beggs-Brill model, the Gray model and its modification, and the Mukherjee-Brill model. The purpose of this work is to compare the predictions of friction models with the results obtained using commercial realizations of the same models. The results of the Schlumberger PIPESIM hydraulic simulator calculations were used as a benchmark for comparison with the "d-Flow" models. Numerical experiments were conducted to investigate two-phase flow under varying well geometry and flow regimes. The models used were compared, and the results showed that the predicted liquid holdup had an average relative error of 0.06%. In some cases, the error was as low as 0.02%. The predicted cumulative pressure drop in the well did not exceed 0.34% for all considered models. Based on the comparison results, we conclude that the "d-Flow" software package is suitable for calculating pressure drop in wells of different geometry and surface networks.
Mechanisms of interaction of CO2 with reservoir oil
Authors: Khakimov A. G. , Eremin N. A.
Published: January 2024

The article aims to examine the mechanisms of miscible and immiscible interaction of CO2 with oil in detail. The study aims to investigate the effects of these mechanisms on the physical properties of oil, recovery efficiency, and oil reservoir parameters. This will enhance our understanding of the impact of these processes on oil production and carbon management. The article takes an analytical approach to examine the processes of CO2 dissolution in oil, changes in physical properties, and mechanisms of oil displacement in the pore space. The study utilises the results of laboratory experiments on the interaction of CO2 with oil. It reveals how the miscible interaction of CO2 with oil can alter the physical properties of oil, enhancing its flowability and recovery efficiency. An analysis of immiscible interactions enables us to comprehend the mechanisms of oil displacement and optimize the process. The work is relevant to oil production and carbon management, providing data for the development of more efficient production technologies and methods.
Criteria approach to the professional selection of an operator of an automated control system for an integrated oil and gas processing unit at the Kogalymneftegaz territorial production enterprise
Authors: Zhilyakov E. V. , Tomus I. Yu. , Monakhova Z. N. , Guzeeva S. A. , Petrov G. L.
Published: January 2024

Research into the criteria for selecting professionals to operate automated control systems for integrated oil and gas processing units involves evaluating the qualitative and quantitative characteristics of employees and applicants in this field. The operator of automated control systems plays a crucial role in ensuring the efficiency of oil and gas production, industrial safety, and labour protection at the enterprise. The process of professional selection complex and can be affected by various negative factors that affect the working capacity of the studied group. These factors include objective and subjective fatigue processes, as well as the activity of the central nervous system. The latter is dependent not only on a person's psychotype but also on the intensity of these factors. Additionally, extreme climatic and geographical working conditions, shift work, and harmful parameters in the production process can also be mentioned. The Professional Selection Programme was developed for an operator of the automated control system of the integrated oil and gas processing unit of LUKOIL-Western Siberia LLC, Kogalymneftegaz territorial production enterprise. The analysis of the data enabled us to establish the main requirements for this Programme and devise an algorithm for its implementation.
Pengaruh Kebijakan Dividen, Kepemilikan Manajerial, Penghindaran Pajak, Profitabilitas, Dan Leverage Terhadap Nilai Perusahaan
Authors: Ratnandari Nindita Indah , Kusumawati Eny
Published: January 2024

The firm value measures the amount of a company's stock market price against its book value as an illustration of investors' perceptions of their confidence in the company for good performance prospects in the future. This study aims to analyze the effect of dividend policy, managerial ownership, tax avoidance, profitability, and leverage on firm value in non-financial companies on the Indonesia Stock Exchange for the period 2020 - 2022. The sampling technique used in this study was purposive sampling. This research sample consists of 165 companies that meet the criteria as a unit of analysis. The analysis method used is multiple linear regression analysis. The results provide empirical evidence that dividend policy, managerial ownership, profitability, and leverage affect firm value. Meanwhile, tax avoidance does not affect firm value.
Helichrysum arenarium as a source of flavonoids: Evaluation of antimicrobial activity and flavonoid content of extracts of Helichrysum flowers in vitro
Authors: Badalyan Asya , Abrahamyan Syuzanna , Abovyan Arevik , Badalyan Armen , Semerjyan Gayane , Hovhannisyan Narine
Published: January 2024

Background: Helichrysum (family Asteraceae, kind of H. armenium, subfamily of Asteroideae) is known in Armenian traditional medicine for its diuretic, antioxidant, choleretic and anti-inflammatory properties. Studies have shown that Helichrysum flowers have a high content of flavonoids. In this study, we investigated the impact of various extraction process parameters on the yield of flavonoids obtained from Helichrysum flowers in Armenia. Subsequently, a comprehensive antimicrobial assay was conducted on the ethanol and aqueous extracts derived from the dried flower heads of Helichrysum. Objective: The objective of this study is to explore the influence of extraction process parameters on the yield of flavonoids from H. arenarium flowers and to determine their antibacterial activity.Methods: Antibacterial activity was determined using the agar-well diffusion method against four bacterial species (E. coli, Salmonella enterica, Staphylococcus aureus and S. typhimirium). The assessment of the total flavonoid content in the ethanol extract of Helichrysum was conducted using the AlCl3 method, following the procedure outlined by Andreeva and Kalinkina. Results: The ethanolic and aqueous extracts demonstrated antibacterial activity against Staphylococcus aureus ATCC 6538 and Bacillus Subtilis 168. However, no significant activity was observed against Escherichia coli ATCC 8739 and Salmonella Typhimurium ATCC 14028. The research findings affirm that the extract derived from everlasting flowers exhibits antimicrobial properties, particularly targeting Gram-positive bacteria. Conclusion: The results of our tests indicate that the extract of Helichrysum belonging to Armenian flora, is rich in flavonoids and has significant antimicrobial activity and may find application in the food industry, as well as in organic agriculture.Keywords: Helichrysum, plant extracts, flavonoids, antimicrobial activity, spectrophotometry