bluuebunny/crossref_metadata_2025 huggingface dataset:
Some Problems of Legal Regulation of Personal Mobility Device Operation
Authors:   Senior Lecturer of the Department of Administrative Law and Administrative Activities of the Stavropol Branch of the Krasnodar University of the Ministry of the Interior of the Russian Federation, Trusov Aleksandr I.
Published: September 2024

The article is devoted to the analysis of Russian legislation and foreign experience in the field of operation of means of individual mobility, on the basis of which some problems of legal regulation are highlighted. Taking into account the technical characteristics and design features of individual mobility aids, the author comes to the conclusion that it is necessary: to register individual mobility aids, obtain license plates and insure the civil liability of persons managing them or owners of individual mobility aids; dividing such technical devices into different types (categories) according to the method of control, the presence of a brake, the presence of a steering wheel, engine power, maximum speed, dimensions and weight; revision of age restrictions on the admission of persons using means of individual mobility to participate in road traffic; additionally provide for the availability of protective ammunition, depending on the characteristics and types (categories) of such technical devices; provide for other restrictions on the place of movement, the speed of movement in specific places and the availability of additional equipment. The article substantiates the need for further improvement of the conditions developed by the legislator for admission to the management of means of individual mobility and law enforcement practice to prevent and suppress offenses related to the operation of means of individual mobility.
Pelatihan Pembuatan Spesimen Hewan dan Tumbuhan: Pemanfaatan Lingkungan Sebagai Sumber Belajar di SMA Negeri 3 Martapura
Authors: Destiara Meyninda , Pertiwi Agustina Ambar , Himmah Nurul
Published: September 2024

Biologi merupakan ilmu yang mempelajari tentang alam dan lingkungan. Sehingga lingkungan dapat menjadi sumber belajar yang dikemas menjadi sebuah media ajar. SMA Negeri 3 Martapura merupakan sekolahan yang memiliki lingkungan yang masih alami. Sehingga kegiatan pengabdian ini dilaksanakan di sekolah tersebut dengan tujuan memberikan penguatan materi dan memberikan pelatihan kepada siswa tentang membuat spesimen herbarium dan insektarium dari tumbuhan sekitar sekolah. Metode yang digunakan adalah tutorial dan pendampingan secara kelompok kepada peserta. Hasil dalam kegiatan ini menujukkan bahwa peserta pengabdian antusias dan dapat memahami morfologi hewan dan tumbuhan dalam mengikuti pelatihan hal ini diperoleh dari hasil produk herbarium dan insektarium yang dibuatnya dengan rapi dan utuh dengan melibatkan keterangan dan nama ilmiah pada spesies yang diawetkan.
Evaluation of stresses on the surface of production columns equipped with sand filters when downing into a horizontal well
Authors: Khabibullin Marat Ya.
Published: September 2024

Relevance. The need to estimate the time of formation sand accumulation near the annulus of a horizontal well and the unit length of filter elements in the bottom of production strings and to determine the stresses on the surface of production strings equipped with sand filters when lowering into the well. Aim. Based on a study of the reasons for the continued flow of sand into wells equipped with anti-sand filters, to develop and propose measures related to the need to choose a reduction in the number of filters that provide the design flow rate of a horizontal well or a significant increase in the length of the filtering surface of the filters in order to reduce erosive wear of the wire winding. Objects. We are considering a well with a horizontal section, equipped with sand filters, the same size as the casing strings. It was assumed that the integrity of the surface of the filter elements would be preserved and the conditions for their destruction would be eliminated when lowering into the horizontal shaft. This presupposes the necessary efficient operation of the well throughout the entire operational period. The section of the first set of curvature and the forces arising during this are considered as wellas stability of a pipe string during possible stops. Centralizers are evenly located along the length of the column, then in some sections we will have a multi-span statically indeterminate beam, in each section of which a radial load acts. Methods. When studying the time of formation sand accumulation in the annular space of a horizontal well and a unit length of filter elements in the bottom of production strings, it is necessary at the first stage to determine the stresses on the surface of production strings equipped with sand filters when lowering into the well. Studying the assessment of the existence time of the transition period is of particular interest. This is, in other words, during what operational period there is a complete accumulation of formation sand in the annular space and the transition of formation drainage along the entire length of the horizontal wellbore to drainage of only zones adjacent to the filters. To calculate the fluid flow rate when the annular space of the horizontal well is completely filled with sand, the design values ​​of the AC4.8 formation parameters were used. The maximum value of depressions used in the calculations is assumed to be 1.5 MPa. Results. Consideration of situations that arise when filters are lowered into horizontal wells indicates that the outer surface of the filter elements is not protected from destruction as a result of contact stresses with the walls of the drilled wellbore. To protect against destruction and rubbing open gaps by clay-containing rocks, rigid centralizers should be installed along the edges of the filter elements, the maximum allowable distances between which should not exceed 4.0–4.5 m.
Increasing the efficiency of coagulation in resonant gaps due to acoustic flow formation
Authors: Khmelev Vladimir N. , Nesterov Viktor A. , Shalunov Andrey V. , Terentyev Sergey A.
Published: September 2024

Relevance. The urgent need to eliminate environmental pollution from industrial emissions of various solid particles. At the same time, maximum attention is paid to cleaning exhaust gases from particles of 2.5 microns in size or less. One of the most promising ways to increase the efficiency of existing gas purification equipment in capturing such particles is their coagulation by exposing the gas flow to high-intensity acoustic vibrations of ultrasonic frequency. However, at low concentrations, even at the maximum permissible sound pressure level, the coagulation efficiency of particles smaller than 2.5 microns is insufficient to increase the recovery rate of gas cleaning equipment. Therefore, there is an urgent need to find new ways to further improve the efficiency of ultrasonic coagulation of particles smaller than 2.5 μm. Aim. To determine the conditions for the formation of vortex flows in ultrasonic fields with the maximum ultrasonic influence in terms of sound pressure level. Conducting comparative studies of the coagulation of particles with a size of 2.5 microns with and without vortex flows. This will make it possible to determine the real values of increasing the efficiency of ultrasonic coagulation during turbulization of a gas-dispersed flow by acoustic flows in comparison with coagulation in a uniform ultrasonic field and without it. Objects. Coagulation of particles under the influence of homogeneous and inhomogeneous ultrasonic fields. Methods. Computer modeling of the formed ultrasonic field by the finite element method using harmonic acoustic analysis. The paper considers the experimental method for studying the process of combining particles under the influence of ultrasonic vibrations. To determine the characteristics of an aerosol during experimental studies, a TIPAS-1 meter based on the small-angle scattering method and the spectral transparency method was used. Results. The paper introduces the results of studies of coagulation of particles with a size of 2.5 microns or less in an ultrasonic field formed in resonant gaps by oscillating disk emitters. The authors proposed to increase the efficiency of coagulation in resonant gaps through the use of ultrasonic disk emitters capable of forming alternating zones of maximum and minimum amplitude oscillations in the resonant gaps. The creation of such zones ensured the formation of vortex-type acoustic flows capable of moving particles within the nodal regions of a standing wave and between them. The involvement of small particles in the formed flows made it possible to increase the probability of their collision. It was established that more effective ultrasonic coagulation provides an increase in the degree of inertial capture for particles of 2.5 microns in size by 6% – from 89 to 95%, for particles of 1.5 microns in size by 7% – from 85 to 92%, and for particles of 0.5 microns by 9% – from 76 to 85%.
Comprehensive justification of the errors at hydraulic calculation of the reservoir pressure maintenance system
Authors: Ilyushin Pavel Yu. , Vyatkin Kirill A. , Kozlov Anton V.
Published: September 2024

Relevance. The need to determine the permissible errors of hydraulic calculations of surface pipelines of the reservoir pressure maintenance system. This must be done, among other things, due to changes in the properties of produced water. As a result of the transition of most fields to the late stages of development, the water content of the extracted products increases, the composition and properties of reservoir waters change due to the breakthrough of the injected water. These circumstances can lead to significant changes in the mineralization, composition and Ph of water, which must be taken into account in numerical modeling. Aim. Creation of a nomogram for estimating the error in the course of changing the properties of produced water for numerical modeling of the operation of pressure pipelines of the reservoir pressure maintenance system. Methods. Hydraulic calculations in the engineering process simulator software, analysis of the properties of produced water samples in the laboratory, assessment of the density of produced water samples in the PVTSim 20 software product. Results. The studies were carried out on samples of produced water taken from seven wells. The value of salinity in the reservoir pressure maintenance system during the year varies from 247.85 to 327.79 g/dm3. The calculated density varies from 1188 to 1255 kg/m3. To calculate the pressure at the mouth of the injection well during water injection, samples with the highest, average and lowest density were taken. Analyzing the obtained data, a strong effect of water properties on the values of wellhead pressures is noticeable. On the basis of the conducted studies, a nomogram was created to determine the degree of influence of changes in water properties in the course of hydraulic calculation, taking into account the specific-injectivity index of injection wells and the length of pipelines. Conclusion. In the course of numerical modeling, it is quite difficult to take into account all the parameters that affect the accuracy of the calculations obtained. To do this, it is proposed to use the created nomogram, which allows estimating the permissible errors of hydraulic calculation taking into account the variability of the properties of water sent to the reservoir pressure maintenance system.
Mineral composition of lake Sabakty sediments as an indicator of paleoclimate, Southern Urals, Russia
Authors: Yusupova Anastasia R. , Nurgalieva Nuriia G. , Rogov Alexey M.
Published: September 2024

Relevance. Reconstruction of climatic changes based on the lacustrine sediments of lakes makes it possible to identify climatic trends and events in the late Quaternary. The Urals is considered as one of the climatic divisions, therefore, studies of the conditions of lake sedimentation, including climatic ones, are relevant in this area. Aim. To study mineral composition as an indicator of paleoclimate of Lake Sabakty sediments. Object. Core of Lake Sabakty sediments (length is 298 cm). The age of the core is ~25 thousand years old. Materials and methods. Sampling was carried out taking into account seismoacoustic data, lithological description, as well as measurements of magnetic susceptibility and radiometric dating data. The granulometric analysis was carried out by laser granulometry using a Bluewave particle size analyzer (Microtrac, USA) combined with a sample loading and circulation system with an integrated ultrasonic dispersant. Mineral composition of the sediments was determined using the D2 PHASER X-ray diffractometer and the Merlin auto-emission scanning electron microscope. Results. The predominance of the siltstone fraction was established. The mineral composition is characterized by the predominance of allotigenic minerals in sediments (quartz, microcline, albite, mica, chlorite, mixed-layer clay minerals, hornblende, kaolinite) according to X-ray diffraction and electron microscopy. Autigenic minerals include biogenic silica (cristobalite, tridymite), pyrite, carbonates (calcite, dolomite), sulfates (gypsum, barite). Conclusions. The ratio of allogenic and autogenic components reflects the changes in the accommodation of the reservoir and the supply of clastic material associated with changes in climate humidity. Changes in climate humidity are reflected in changes in the contents of carbonate and sulfate minerals. At the beginning of sedimentation, Lake Sabakty was shallow and mineralized due to climate aridization, which probably included the global Bond 8 event (~26000–11700 BP). The study of the mineral composition of the sediments of Lake Sabakty allowed us to establish the events of climate aridization: ~10000 BP, ~7600 BP, ~6900 BP ~1900 BP and ~1400 BP. In Sabakty Lake, there is a bright episode of a decrease in climate humidity in the range of ~7300-5200 BP, which is marked by an increase in carbonate content up to 70% and the detection of gypsum at ~6900 BP.
Method for determining reagent optimum volume for acid treatments of carbonate reservoirs based on a pressure build-up curve method
Authors: Yurin Aleksandr V. , Riabokon Evgenii P.
Published: September 2024

Relevance. The need to increase the efficiency of acid treatments of carbonate reservoirs. Often, the design of treatments does not take into account the actual operating conditions of production wells, which leads to an overestimation or underestimation of the required volume of the reagent. Aim. To propose a method for determining the optimal amount of reagent for carrying out acid treatments of carbonate reservoirs in order to restore the permeability of the rock in the near-well zone, taking into account the actual operating conditions of the well, which allows rationalizing the use of subsoil user resources. Objects.  Producing oil wells exploiting oil deposits in carbonate deposits of the Perm region, as well as the results of hydrodynamic studies carried out on these wells. Methods. Theoretical substantiation of the possibility of determining the zone of deteriorated permeability around the well using the pressure recovery curve graph, graphical processing of diagnostic graphs of the pressure recovery curve, mathematical calculation of technological indicators based on hydrodynamic testing data of wells, integration of inflow volumes, analysis of technological data and conditions of applicability of the methodology. Results. The authors have developed the methodology for determining the optimal volume of reagent for acid treatments of carbonate reservoirs based on the pressure recovery curve method. The optimal volume of reagent for 21 production wells was calculated. Using the example of 13 wells, the efficiency of the injected volume of reagent was determined and an overestimated volume of reagent injected into the formation was demonstrated. The authors assessed the subsoil user's costs taking into account the excess consumption of the reagent. The factors influencing the success of the method application depending on the operating conditions of the wells were identified. Criteria inappropriateness of acid treatment were identified.
Aspects of thermal utilization of organic poultry waste
Authors: Kozyr Dmitry A.
Published: September 2024

Relevance. Currently, poultry farming, as part of the agro-industrial complex, is showing strong growth, which leads to an increase in the generation of organic waste. Chicken manure is a problematic organic waste from poultry farming in terms of its quantity, environmental hazard and moisture content. On the other hand, chicken manure is a potential renewable source of phosphorus. The use of chicken manure as a technogenic deposit of phosphorus will improve the level of environmental and food security. Aim. Research of influence of parameters of plasma and pyrolysis treatment of chicken manure on waste weight loss and phosphorus content in biochar. Methods. Experimental studies of the treatment of chicken manure with microwave plasma and induction pyrolysis; determination of the mass fraction of moisture during drying and loss of waste mass during disposal by the gravimetric method; determination of phosphorus in biochar using the Denizhe colorimetric method modified by A. Malyugin and S. Khrenova. Results and conclusions. The author has carried out the experimental studies on the treatment of chicken manure with microwave plasma and induction pyrolysis. It was shown that effective ways to reduce the mass of chicken manure and prevent environmental pollution are the treatment of manure with microwave plasma and its induction pyrolysis. It was established that when chicken manure is processed in microwave plasma in an inert environment at temperatures up to 1560°C, the mass of waste is reduced by 92.76% with an exposure duration of 7 minutes. At the same time, the content of P2O5 in biochar is up to 52.2 g/100 g of biochar. Further exposure to plasma leads to vitrification of the waste. As the time of treatment of chicken manure with microwave plasma increases, the loss of waste mass grows exponentially. Induction pyrolysis of chicken manure in an inert environment at a temperature of 1000°C makes it possible to reduce the mass of waste by 92.30%. P2O5 content in biochar grows with increasing pyrolysis temperature and amounts to 12.64 g/100 g of biochar. Biochar obtained by treating chicken manure with microwave plasma and induction pyrolysis can be considered as a source of phosphorus. The results obtained indicate the possibility of utilizing chicken manure using microwave plasma and induction pyrolysis.
Dendrogeochemistry of Hg according to the study of Scots pine (Pinus sylvestris) in the Tomsk region
Authors: Lyapina Elena E. , Shang Le  Thi  Hong , Krachnakova Maria G. , Baranovskaya Natalia V. , Markelova Anna N. , Zolotov Sergey Yu.
Published: September 2024

Relevance. The need for an ecological and geochemical assessment of the mercury intake characteristics into pine wood in order to identify the factors determining the accumulation of the element by trees. Aim. Quantitative evaluation of mercury content in the annual rings of Scots pine (Pinus sylvestris L.) in the Tomsk region, as well as identification of geoecological and climatic factors affecting the accumulation of pollutant. Object. Annual rings of Scots pine (Pinus sylvestris L.) widely used in world science to obtain information about environmental pollution by chemical elements. Methods. Pine core sampling, samples drying at room temperature. Determination of the number, width of annual rings and growth of wood on the LINTAB device (TSAP-Win and LIGNOVISION software) at the Institute of Monitoring of Climatic and Ecological Systems SB RAS (Tomsk). Determination of concentrations on the mercury analyzer RA-915+, by atomic absorption (pyrolysis method) on the basis of the Engineering School of Natural Resources of Tomsk Polytechnic University. Calculation of ecological and geochemical indicators: concentration coefficient, temporal allowable concentration, noosphere clark, normalization according to B. Markert, enrichment factor. To assess the climatic response of mercury accumulation by trees, the average daily data for 1933–2021 from the Tomsk weather station were used. Results. The authors have obtained the data on the gross content and geochemical features of mercury accumulation by Scots pine wood in the territory of the Tomsk region. The results of calculations of the main geoecological indicators of the mercury load indicate an excess of element concentrations relative to the background, the average for terrestrial plants, as well as according to scandium rationing data. The paper highlights the period of increased mercury concentration in pine wood (1941–1974) as a result of the influence of the city industry. A similar pattern of pollutant accumulation for 1970–1986 was revealed in the study area, with an excess of 1.6–1.8 times relative to adjacent environments (soil, solid snow sediment, pine needles, mosses). Hg accumulation by wood is affected by the precipitation amount, both per year and during the growing season and during the period with positive temperatures, as well as the duration of precipitation during the year and the growing season.
Geochemical criteria of the gold content of the Tom-Yaya interfluve weathering crusts
Authors: Voroshilov Valery G. , Timkin Timofey V. , Savinova Olesya V. , Molukpaeva Diana K.
Published: September 2024

Relevance. Gold-bearing weathering crusts are widespread in the Tom-Yaya interfluve, but the criteria for predicting their gold content, including geochemical ones, have not been adequately developed. Aim. To identify the geochemical features of the weathering crusts of the Tom-Yaya interfluve to resolve issues of predicting their gold content. Object. Weathering crusts from the rocks of the Paleozoic basement of the Tom-Yaya interfluve. Methods. The chemical composition of weathering products was determined by ICP-mass spectrometry. Core samples of 36 wells for 20 elements were analyzed. The results obtained were processed in the statistical analysis software package Statistica. The main parameters of the distribution of chemical elements in the profiles of gold-bearing and non-gold-bearing weathering crusts were calculated, discriminant and factor analyzes were carried out. Results. Statistically significant differences in the chemical composition of the weathering profile zones were established. In weathering of non-gold-bearing rocks, the removal of P, Mn, Co, Ni, Zn and the accumulation of Cr, Mo, Ag, Sn, Sb, Hf, Tl, Pb, Bi occur with the indifferent behavior of Au, As, Fe, Cu. Gold-bearing weathering crusts are formed in mineralized zones and are initially enriched in Au, As, W, Sb, and, to a lesser extent, Cu, Zn, Pb, Bi, Tl, Hf, Sn. The average content of gold and most satellite elements (except Pb) decreases during the weathering of mineralized zones, but the dispersion increases many times, as a result of which areas of secondary enrichment in gold and satellite elements Sb, As, Ag, Sn, Tl, Co, Cu, Zn, Cd, Bi appear within the zones of hydrolysis and hydration. Geochemical associations characteristic of residual weathering crusts are largely preserved in redeposited crusts, where As, Sb, W, Cd, Ag, Sn, and Hf are accumulated together with gold.
Analysis of pipe sticking at well drilling in the South Iraqi limestone and sandstone reservoirs
Authors: Kharlamov Sergey N. , Al-obaidi Sofyan Sameer
Published: September 2024

Актуальность. Прихват бурильных труб увеличивает непроизводительное время буровой установки, повышает риски контроля специального оборудования при проходке сложных по структуре коллекторов. Для точного описания таких негативных сценариев требуется универсальная методика, включающая комплексную геомеханическую и гидродинамическую модель с детальным прогнозом взаимосвязанных физических процессов в открытой термодинамической системе «коллектор–скважина–буровой раствор». Проблемы построения «гибкой» модели, разработки корректной методики исследования прихватов нетривиальны и представляют интерес для инженерных приложений в нефтегазовой отрасли. Цель. По реальным данным на месторождениях в Южном Ираке предлагается: исследовать прихваты труб при бурении скважин с наклонной образующей ствола: оценить риски, выявить особенности и закономерности прихватов; разработать модель и методику их предупреждения. Объект: прихваты и их эффекты. Методы: геомеханический и гидродинамический, численный и аналитический. Результаты. Представлен детальный обзор и критический анализ сценариев прихвата бурильных труб на месторождениях в Южном Ираке. Проанализированы факторы, влияющие на прихват и эффективность работы буровой установки в процессе бурения наклонных и горизонтальных участков скважин. Установлены критерии, определяющие эффективность бурения с учетом изменений режимов работы оборудования. Обсуждаются особенности управления параметрами бурения, ответственными за предупреждение прихвата на ранней стадии, седиментация шлама в донной части наклонных участков и засорения скважины. Выводы проиллюстрированы результатами анализа фактических сценариев прихватов, данными численного моделирования динамики частиц в межтрубном пространстве горизонтальных эксцентричных скважин, полученными в расчетах сложного сдвигового течения неньютоновской дисперсной смеси с использованием идей эйлерово-эйлерова и эйлерово-лагранжева подходов.
Role of seismogeological modeling in the attribute analysis of seismic data using the example of the forecast of the thickness of the Yu3t formation of the southwestern Kazakhatsan oil field
Authors: Belozerov Vladimir B. , Volkova Alekandra A.
Published: September 2024

Relevance. The need to introduce the results of two-dimensional seismogeological modeling into seismic data attribute interpretation to identify signs of manifestation of the target object of the forecast in the wave field of seismic recording and assess the influence of interference of the host strata on it. Object. Highly productive terrigenous Upper Jurassic Yu3t formation of the Nizhnekumkol formation of the oil field of southwestern Kazakhstan, formed under conditions of a cone of liquid proluvial fan. Aim. To assess the impact of the interaction of the enclosing strata of the Upper Jurassic Yu3t formation on the seismogeological forecast of its capacities within the considered oil field. Methods. Two-dimensional seismogeological modeling based on the analysis of the frequency response and determination of the shape of the elementary pulse of seismic recording in the interval of the productive formation. Analysis of the thicknesses of geological inhomogeneities overlying the Yu3t formation in order to assess their effect on the wave characteristic of the time interval of research. Results. The performed two-dimensional seismogeological modeling showed that the amplitude characteristic of the negative phase of the wave packet of the target object, characterizing the power of the Yu3t formation, is affected to varying degrees by the overlapping thicknesses of the Yu3a formation and the inter-reservoir seal P1. Based on the modeling results, it was concluded that the basis for predicting the thickness of the Yu3t formation should be considered an attribute map of the difference in amplitudes of the upper positive (A) and average negative (B) phases of the considered wave packet A, B, C. At the same time, the correlation dependences of the obtained attribute with the values of the thickness of the Yu3t formation in drilled wells should be considered within the areas outside the zone the influence of other elements complicating the wave pattern of the target object (tectonic disturbances and erosive protrusions of the foundation).
Nurturing seeds of innovation: the relationship between entrepreneurial orientation and socio-emotional wealth and its implications for family business innovation
Authors: Caicedo-Leitón Ana Lucia , Villanueva Nuria , Garcés-Galdeano Lucía
Published: September 2024

This research examines the relationship between the transmission of entrepreneurial orientation (EO) and socio-emotional wealth (SEW), and their implications for family firms' innovation. To achieve this, a single case study was conducted on a Spanish family business through interviews and document review. Data were analyzed using thematic and critical incident analysis. The findings of the case study underscore that the relationship between entrepreneurial orientation and socio-emotional wealth is intricate and has significant implications for innovation. The dynamic relationship between entrepreneurial orientation and socio-emotional wealth is characterized by a mutually reinforcing symbiosis, which contributes to ensure the long-term survival of the analyzed family business.
Pembinaan Guru Berbasis Lesson Study dalam Rangka Mengembangkan Kompetensi Guru Matematika
Authors: Putri Agustiany Dumeva
Published: September 2024

Proses pembelajaran secara garis besar menuntut sang guru untuk menyajikan proses pembelajaran yang aktif dan kreatif dan juga menyampaikan materi dengan cara yang menyenangkan. Oleh karena itu, sang guru haruslah pempunyai banyak pengalaman, memahami teori-teori pembelajaran dan mengusai meteri secara baik. Membangun mental guru professional harus sudah dibangun sedini mungkin. Pengabdian ini menggambarkan pembinaan kepada guru, pembinaan pengelolaan pembelajaran, pengembangan mutu pembelajaran dan sistem pembelajaran yang tepat dalam proses pembelajaran, implementasi Lesson Study dalam mengembangkan kompetensi guru dan mengungkap secara deskriptif proses pelaksanaan Lesson Study dan temuan-temuan selama pelaksanaan Lesson Study. Pengabdian ini dilakukan di Pondok Pesantren Ar- Rahman yang meliputi pembinaan guru di Pondok Pesantren Ar- Rahman. Kemudian treatment Lesson Study diterapkan untuk guru yang mengajar mata pelajaran matematika. Treatment dilakukan dalam rangka menyempurnakan performance dalam proses pembelajaran Metodologi ini melalui tahapan desain dan pengembangan instrument dan selanjutnya pelaksanaan Lesson Study meliputi Plan, Do dan See yang dilakukan dengan cara siklus berulang.
Pengembangan Media Pembelajaran Interaktif Matematika Berbasis Unity of Sciences dengan BOT API Telegram pada Materi Barisan dan Deret Geometri
Authors: Rosidah Zakiyatur , Siswanah Emy , Rohman Ahmad Aunur
Published: September 2024

This study aims to produce valid, practical, and effective the interactive mathematics learning media based on unity of sciences by using Telegram bot API for geometric sequences and series in SMK Negeri 4 Kendal. The type of research used Research and Development (R&D) with 4D development model, namely Define, Design, Develop, and Disseminate. Data was collected with validation sheets, questionnaires, interviews, and tests. The subjects in this research were student of X RPL 2 grade with total of the sample was 35 students. The results showed that the media was declared eligible after going through experts validation, gained an average score of 3.73 with very valid criteria. In terms of practicality gained an average score of 3.43 with very practical criteria. Based on the results of the effectiveness test using t-related test with degree of freedom (dk) = 35 – 2 = 33 and a significance level of 5% obtained tobserved = 2.694 > t table = 1.967. Also, from N-Gain test gained score of 0.3107 with moderate criteria. This shows that the interactive mathematics learning media based on unity of sciences by using Telegram bot in geometric sequences and series effective in improving student learning outcomes.
From utopia to ideology: 1920s theatre studios in Ukraine
Authors: Veselovska Hanna
Published: September 2024

The article analyses the origination of theatre studios in Ukraine and the peculiarities of their functioning in the 1920s. The author focuses on the social aspects of the studio movement, highlighting its mass character and the remarkable diversity of people involved in the studios’ creative process. These features were represented best, in the author’s view, in the activities of Mystetske Obiednannia Berezil (MOB, The Berezil Artistic Association), a conglomerate of studios and workshops founded by director Les Kurbas. Discussed in detail are the MOB’s complex organisational structure, its artistic goals, particularly those based on postulates of social utopia, as well as the main studio performances staged by Kurbas.
Coparenting and conflicts between work and family: Between-within analysis of German mothers and fathers
Authors: Adams Ayhan
Published: September 2024

Objective: The study examines the relationship between coparenting conflicts and work-to-family/family-to-work conflicts for employed mothers and fathers.
Background: The presence of children exacerbates the compatibility of work and duties of the private life for working parents. Working along similar lines in terms of parenting seems to be necessary to cope with these challenges. Still, a few studies have focused on the relationship between coparenting and interrole conflicts.
Method: The quantitative analysis draws on longitudinal data from waves 6 to 10 of the German Family Panel, comprising N=3,608 observations of 1,377 individuals. The study employs between-within regression models to examine the inter- and intraindividual associations of coparenting conflicts and work-to-family/family-to-work conflicts.
Results: The results revealed a statistically significant association between the level of coparenting conflicts and both, work-to-family and family-to-work conflicts. Additionally, changes in coparenting conflicts are associated with changes in family-to-work conflicts. Interestingly, the interaction between the level of coparenting conflicts and gender shows that the associations with interrole conflicts are more pronounced for fathers than mothers.
Conclusion: The study provides insights into the interrelatedness between the parental coparenting relationship and the compatibility of work and family. The results underscore the significant relationship between coparenting conflicts and interrole conflicts for mothers and fathers.
Forensic significance of dental cementum
Authors: Santos Pedro Américo Felizardo dos , Andrade Vanessa Moreira , Bastos Luan Ferreira , Da Silva Luciana Pereira , Lopes Ricardo Tadeu , Neves Aline de Almeida , Souza Andreia Cristina Breda de , Visconti Maria Augusta
Published: September 2024

Aim: To determine new energy parameters in micro-CT to allow appropriate segmentation of dental cementum from the surrounding structures. Methods: For this pilot study, 11 single-rooted premolar teeth of young subjects aged 12 to 21 were selected. The teeth were scanned using high-energy microtomography (SkyScan 1173, Bruker) with varying acquisition energies (60, 70, and 80 kV). Each tooth was scanned three times. The images were reconstructed and analyzed by calculating the volume (mm³) of dental cementum in the cervical, middle, and apical root thirds among the different scanned stacks. The mean cementum volume in the root thirds was obtained, and correlated with the patient’s age, using Pearson’s correlation. Results: The mean age of the patients in the sample was 16,73 years. For the 60kV energy, the cementum volumes were 1.01 mm³, 1.00 mm³, and 0.58 mm³, for the cervical, middle, and apical thirds, respectively. For 70kV, it was 1.08 mm3, 1.20 mm3, and 0.71 mm3 for the respective thirds. And for 80kV, 0.55 mm3, 0.91 mm3, and 0.67 mm3 for the respective thirds. Conclusion: An acquisition energy of 70kV resulted in the best segmentation and reproducibility of the results. Micro-CT can be a useful tool to non-destructively evaluate the dental cementum.
Endoscopic management of complications after sleeve gastrectomy: a narrative review
Authors: Lee Sol , Dang Jerry , Chaivanijchaya Komol , Farah Ayan , Kroh Matthew
Published: September 2024

Sleeve gastrectomy (SG) has become the most widely performed bariatric procedure globally due to its technical simplicity and proven efficacy. However, complications following SG, including bleeding, leakage, fistulas, stenosis, gastroesophageal reflux disease (GERD), and hiatal hernia (HH), remain a significant concern. Endoscopic interventions have emerged as valuable minimally invasive alternatives to traditional surgical approaches for managing these complications. This review aims to provide a comprehensive overview of the endoscopic management strategies available for addressing the various complications encountered after SG, emphasizing their critical role in optimizing patient outcomes.
Current applications of tumor local ablation (TLA) combined with immune checkpoint inhibitors in breast cancer treatment
Authors: Tang Lingpeng , Wang Dandan , Hu Ting , Lin Xiaoying , Wu Songsong
Published: September 2024

Breast cancer is one of the most common cancers in women globally, posing significant challenges to treatment because of the diverse and complex pathological and molecular subtypes. The emergence of immune checkpoint inhibitors (ICIs) has revolutionized the treatment of breast cancer, particularly for triple-negative breast cancer (TNBC), significantly improving patient outcomes. However, the overall tumor response rate remains suboptimal due to drug resistance to ICIs. This resistance is primarily due to the immune-suppressive tumor microenvironment (TME), tumor cells’ ability to evade immune surveillance, and other complex immune regulatory mechanisms. To address these challenges, clinical researchers are actively exploring combinatorial therapeutic strategies with ICIs. Tumor local ablation (TLA) technology is anticipated to overcome resistance to ICIs and enhance therapeutic efficacy by ablating tumor tissue, releasing tumor antigens, remodeling the TME, and stimulating local and systemic immune responses. Combination therapy with TLA and ICIs has demonstrated promising results in preclinical breast cancer studies, underscoring the feasibility and importance of addressing drug resistance mechanisms in breast cancer. This provides novel strategies for breast cancer treatment and is expected to drive further advancements in the field.
Recreational activities as a major source of microplastics in aquatic environments
Authors: Chandrakanthan Kanchana , Fraser Matthew P. , Herckes Pierre
Published: September 2024

Microplastics (MPs) have been extensively studied in the marine environment in recent years, but their occurrence in recreational waters, and recreational activities as a source of MPs, have been less explored. In this study, we investigate the temporal variation of MPs in the Salt River, a natural surface waterway heavily used for recreation, and in community swimming pools in nearby Tempe, Arizona. Samples were processed using established methodologies and MP shapes and number concentrations were obtained by optical microscopy. The MP concentrations in samples of surface water collected during recreational activity ranged from 27,798 to 222,391 MPs/m3, with the highest concentrations occurring at 16:00 and lowest at 8:00, consistent with recreational activities. Fibers were the dominant shape (≥ 71%) of MPs overall in the Salt River, accounting for as much as 96% of all MPs at peak activity time (16:00). MP concentrations in water samples from apartment community swimming pools ranged from 59,160 to 254,574 MPs/m3. In terms of shape, fibers were again dominant (sometimes as high as 87%) in these water samples. Raman spectroscopic characterization of the MPs revealed the presence of polyethylene (PE), polyvinyl chloride (PVC), polyester (PES), polyamide (PA), and polypropylene (PP), showing a larger variety of polymers in the pool samples, while more MP pieces remained chemically unidentifiable. The prevalence of PES and PA fibers indicates that release from synthetic fabrics such as swimwear is a substantial source of MPs in the environment.
Como profissionais de saúde da atenção básica se protegem do sofrimento e vivenciam prazer no trabalho?
Authors: Alvarenga Eric Campos , Oliveira Paulo de Tarso Ribeiro de , Silva Anaclan Pereira Lopes da , Nogueira Laura Soares Martins , Pinheiro Josué Gomes , Pimentel Dafne Borralho , Filho Cláudio Ferreira Corrêa , Cordeiro Bruna Katiara Soares Costa
Published: September 2024

O contexto de trabalho na Atenção Básica em Saúde tem sido marcado por condiçõesprecárias e uma organização rígida de tarefas, especialmente localizadas na Amazôniabrasileira. Este artigo analisa a organização do trabalho das equipes de saúde da família deBelém do Pará, verificando quais estratégias as trabalhadoras utilizam contra o sofrimento notrabalho e quais suas vivências de prazer. Realizou-se uma pesquisa qualitativa, descritiva eexploratória com 19 profissionais de saúde de duas Unidades de Atenção Básica em Saúde deBelém. Foram realizados 4 encontros coletivos com cada unidade. Os procedimentos depesquisa seguiram uma adaptação da metodologia da Psicodinâmica do Trabalho. Comoresultados, verificamos uma organização do trabalho com pouco espaço para mudanças. Asprincipais estratégias contra o sofrimento envolvem criar alertas entre as trabalhadoras paraprotegerem-se de possíveis assaltos no território, buscar constantemente alternativas dentro darede de saúde para que usuários consigam receber atendimento especializado e exames, alémde aprender e realizar parte das atribuições dos médicos para ajudá-los a atender mais pessoas.É necessário haver um diálogo maior com os profissionais responsáveis pela gestão dasequipes de saúde, a fim de facilitar uma reorganização dos processos de trabalho e promoveruma melhor saúde mental no cotidiano das equipes.
The results of re-examination of the Neolithic materials from the Ak-Tangi site (northern Tajikistan)
Authors: Shnaider S.V. , Kasparov А.К. , Filimonova Т.G. , Markovskii G.I. , Baranova S.V. , Chernonosov А.А. , Koval V.V. , Fedorchenko А.Yu.
Published: September 2024

The paper reports on the results of reinterpretation of the Neolithic complexes of Hissar I–IV of the Ak-Tangi site, a field study of which was carried out in the middle of the 20th century. At the time of its discovery, only the Hissar Neolithic Culture had been studied in the mountainous part of Central Asia, which the Ak-Tangi materials were attributed to. At the new stage of the research, a comprehensive analysis of the archival materials and sur-viving collection, which comprises palaeofaunal materia and lithic and bone artefacts, was performed, and radio-carbon dating and ZooMS-analysis were employed on some of the bone artefacts.
Tal I — an archaeological site of the medieval principality of Emder
Authors: Koksharov S.F. , Zykov A.P. , Yakovleva E.A.
Published: September 2024

The paper reports on the materials of the settlement of Tal I located on the Endyr River, left tributary of the Ob River. Remains of two medieval dwellings, which appeared at different times, have been discovered at the settlement, and also data have been obtained on episodical visits to this place in the Early Iron Age. The burned-out dwellings overlapped each other but they had common features: they were lit and heated by open hearths, whilst the bases of the walls were strengthened with split blocks, of which the grooves have preserved along the perimeter of the pits. The main collection of finds is associated with the early dwelling, which dates to the Kintus stage of the Middle Ages (late 11th — 12th c.). To this time belongs the pottery of the Kintus period (Rachyevo type), cult ceramic piece of plastic arts, crucibles and smelting ladles for working with non-ferrous metals, some items made of iron and non-ferrous metals, animal bones, and other artefacts. To the Medieval period also belong iron slags and clay coating of bloomery furnaces, indicating work of loop-blacksmiths. Therefore, there is no basis for classi-fying the studied settlement as one of seasonal hunting-fishing sites. The settlement of Tal I was incorporated in a me-dieval principality (chiefdom) with the centre in the town of Emder (Western Siberia, Lower Ob River basin). From the written sources, it is known that it lost its independence by the end of the 16th century, before the territory was annexed by the Muscovite state, becoming part of the Koda principality as the tributary Emdyrskaya Volost.
Analisis Perbandingan Purchase Intention Pada Aplikasi Online Food Delivery (OFD) Di Indonesia
Authors: Samiono Bambang Eko , Pratiwi Ramadhanty
Published: September 2024

Di Indonesia, layanan pesan antar makanan atau online food delivery (OFD) terdiri dari 2 (dua) jenis yaitu OFD by Platform dan OFD by restaurant apps.  Data menunjukkan bahwa pengguna layanan OFD by restaurant apps lebih unggul dari tahun ke tahun dibandingkan pengguna OFD by Platform. Hal ini membuktikan bahwa walaupun 2 (dua) jenis aplikasi ini berada di industri yang sama dan menyediakan layanan yang sama yaitu online food delivery (OFD) namun keduanya tetap memiliki perbedaan yang dipengaruhi oleh faktor-faktor tertentu. Penelitian bertujuan untuk menganalisis perbedaan Purchase Intention pada Aplikasi Online Delivery Food Berbasis Platform (Gofood, Grabfood dan Shopeefood) dan Restaurant (KFCKU, Pizza Hut Indonesia dan McDelivery) dengan melibatkan variable online customer review, Sales Promotion dan Website Quality serta variable intervening e-trust. Penelitian ini dilakukan dengan 100 responden. Teknik pengumpulan sampel dalam penelitian ini menggunakan teknik purposive sampling. Penelitian ini menggunakan metode kuantitatif dan uji analisis jalur (path analysis). Hasil dalam penelitian ini menjelaskan terdapat pengaruh secara langsung antara Online Customer Review (X1) dan Website Quality (X3) terhadap E-Trust (Z) pada aplikasi OFD by Platform dan aplikasi OFD by restaurant. Pada OFD by Platform, tidak terdapat pengaruh secara langsung antara Sales Promotion (X2) dan Website Quality (X3) terhadap Purchase Intention (Y). Pada OFD by restaurant, tidak terdapat pengaruh secara langsung antara Online Customer Review (X1) dan Sales Promotion (X2) terhadap Purchase Intention (Y). Selain itu, terdapat pengaruh secara tidak langsung antara Online Customer Review (X1) dan Website Quality (X3) terhadap Purchase Intention (Y) melalui E-Trust (Z).
PELATIHAN COPING RESOURCES UNTUK MENGURANGI DERAJAT STRES PADA IBU YANG BEKERJA
Authors: Natanael Clarisa Priska , Edwina Irene Prameswari , Cahyono Maria Yuni Megarini
Published: September 2024

This research aims to determine the effect of coping resources training (health and energy, problem solving skills, and positive beliefs) to reduce the degree of stress in working mothers. The design used is one group pretest and posttest design. The subjects were 11 working mothers with a maximum age of 40 years, worked a minimum of 6 hours a day, and had at least 1 child who was in kindergarten-primary school. The measuring instrument uses a stress degree measuring instrument and a copin resources measuring instrument. Data analysis used the Wilcoxon rank to compare the pretest and posttest results after being given the intervention. The results of this research show that there is a reduction in the level of stress after being given interventions that increase coping resources, problem solving skills and positive belief. The implication of this research is that training in coping resources, problem solving skills and positive belief based on an experiential learning approach can be used as a method to reduce the level of stress.