bluuebunny/crossref_metadata_2025 huggingface dataset:
Photosynthetic activity of coniferous undergrowth after industrial felling
Authors:   Institute of Biology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, Tuzhilkina V. V.
Published: June 2024

The functioning of coniferous undergrowth of preliminary and subsequent generations after industrial felling was considered in the middle taiga subzone of the Komi Republic. Using spectrophotometric and gasometric methods we analyzed the pigment activity, photosynthetic, and respiratory abilities of the assimilation apparatus of pine (Pinus sylvestris L.) and spruce (Picea obovata Ledeb.) undergrowth at the 3- and 10-year old clearings. The pigment apparatus functional rearrangement of the preliminary generation spruce undergrowth at clearings was found. Needles adapt to environmental conditions at the pigment system level by changing the content and ratio of chlorophylls and carotenoids. Changes in plastids in the spruce undergrowth at the 3-year clearings occurred due to a decrease in chlorophyll and carotenoid concentrations, and at the 10-year clearings due to activation of pigment synthesis which affects the carbon dioxide absorption in chloroplasts. The assimilation apparatus of spruce undergrowth at clearing absorbs CO2 by 1.4 and 1.8 time more actively than that under the forest canopy. The photosynthetic and respiratory abilities of spruce needles at clearings do not differ. This indicates a stable level of important vital processes for the studied undergrowth at clearings during ten years after felling. Pine and spruce undergrowth needles are able to absorb CO2 at a fairly high rate up to 5.73 and 2.7 μmol CO2/(m2 · s) respectively. This rate contributes to the accumulation of assimilates in pine needles and their use for growth which logically increases the productivity of undergrowth at clearings. In general, the functional organization of spruce and pine undergrowth assimilating organs ensures their growth and favors the successful restoration of conifers at clearings in the middle taiga subzone of the European North-East.
Drosophila melanogaster as an in vivo model for assessing the cytogenetic effects of low-intensity ionizing radiation
Authors:   Institute of Biology of Komi Science Centre of the Ural Branch of the Russian Academy of Sciences, Yushkova E. A.
Published: June 2024

The most important target of radiation damage is the cell nucleus. Structural and functional changes occurring in the nucleus under the influence of ionizing radiation affect the development of different biological effects at the cellular and organismal levels. In the present study, the Comet assay was used which makes it possible to assess the complex of DNA damage in different somatic cells of the body. The specificity of the cytogenetic effect of irradiation in low doses in Drosophila melanogaster has been established. The observed reactions depended not only on the irradiation dose and genotype but also on the type of DNA damage and tissue. In general, neuroblasts of individuals with low synthesis of cytoplasmic superoxide dismutase (sodn1/+) showed the highest sensitivity to irradiation in low doses. With an increase in the dose of ionizing radiation, the frequency of alkali-labile sites and DNA single-strand breaks in sodn1-genotype cells increased. The repair mutant genotypes, on the contrary, had radiosensitive traits exclusively at the level of DNA double-strand breaks. To a greater extent, an increase in the yield of radiation-induced DNA damage of this type was registered in cells of the imaginal disks of individuals with defect in the mechanisms of DNA double-strand break repair (okrA17-11/+), postreplicative repair, and meiotic recombination (mei-41D5/+). The genetically unstable strains used in the work have radiosensitive features which makes them convenient models for assessing the radioecological situation in the environment.
Some patterns of the accumulation of trace elements in the leaves of linden (Tilia cordata Mill.) and birch (Betula alba L.)
Authors:   Geological Institute, Russian Academy of Sciences, Gorbunov A. V. , Petrenko D. B. ,   Geological Institute, Russian Academy of Sciences,   Federal state university of education, Dronova A. A. ,   Geological Institute, Russian Academy of Sciences
Published: June 2024

The purpose of the work: to study the patterns of background accumulation of trace elements during the spring-summer-autumn season in the vegetative organs (leaves) of the heart-shaped linden (Tilia cordata Mill.) and white birch (Betula alba L.). Samples were taken on the territory of the Main Botanical Garden of the Russian Academy of Sciences during one season of 2018 from the same tree with an interval of 10–12 days, starting from the opening of the bud (end of April) right up to the time of leaf fall. Soil samples were also taken from birch and linden growing areas. The samples were analyzed in the laboratory of Chemical analytical methods of the GIN RAS using X-ray fluorescence analysis (XRF), instrumental neutron activation analysis (INАA) and atomic absorption spectrometry of cold vapor (AA). The concentration of trace elements in the selected soil samples corresponds to the concept of “background” contents. Two types of trace elements’ distribution in linden and birch leaves during the season have been revealed. The first type is a uniform accumulation of trace elements with a maximum at the end of the season (Na, Ca, Cr, Fe, Co, Br, Sb, La). The second type of distribution is characterized by a maximum concentration of trace elements in the middle of the season with a decrease in concentration by the time of leaf fall (K, As, Zn, Cd, Pb). It should be noted that the range of changes in the concentration of trace elements during the season in both cases can reach 10–15 times. We recommend to take samples of vegetation (leaves) as soon as possible in the middle of the summer season, and to use samples taken at the same time in the same area as “background”.
Adsorption recovery of amines from water solution
Authors:   Mendeleev University of Chemical Technology of Russia, Targanov I. E. , Gakiev A. L. ,   Mendeleev University of Chemical Technology of Russia, Кadirbekov А. А. ,   South Kazakhstan University named after. M. Auezova, Troshkina I. D. ,   Mendeleev University of Chemical Technology of Russia, Bektenov N. А. ,   Abai Kazakh National Pedagogical University, Cherednichenko А. G. ,   Peoples’ Friendship University of Russia (RUDN University)
Published: June 2024

Aquatic biological resources are an important part of the ecosystems of our planet, since they are involved in economic turnover as a source of food. The composition of water, including waste water from enterprises, has a direct impact on the state of aquatic biological resources. To extract and concentrate metals from solutions, hydrometallurgical processes are used – extraction and sorption. Their implementation is possible with the use of special substances – extractants and in a number of processes – sorption materials (Solvent Impregnated Resins (SIR’s) and Levextrel’s) with a mobile phase of the extractant, combining the properties of sorbents and extractants. Despite the advantages of the latter, such as high kinetic parameters, lack of swelling and high values of mechanical strength, they are characterized by the disadvantages of extraction methods – the entrainment of the extractant into the aqueous phase in dissolved and emulsion forms. Under static conditions, the possibility of purification of aqueous solutions containing primary or tertiary amine by adsorption on carbon materials (activated carbon NWC, carbon NWC-T modified with carbon nanotubes, CS-PTFE modified with polytetrafluoroethylene), as well as on styrene-divinylbenzene nonionic copolymer Porolas-T and a natural shell rock adsorbent was studied. The kinetics of adsorption of аmines Primene-JMT and TOA from aqueous solutions by these adsorbents has been studied by the method of a limited volume of solution. Of the known pseudo-first order, pseudo-second order and Elovich models, the pseudo-second order model describes kinetic data more adequately (R2>0.99). The values of the distribution coefficients and the rate constants of adsorption of Primene-JMT and TOA are determined. A block diagram of adsorption purification of aqueous solutions from amines is proposed, the implementation of which will reduce the toxicity of waste solutions and return some of the expensive extractant to circulation.
Two new non-equivalent three-qubit CHSH games
Authors: Jaffali Hamza , Holweck Frederic
Published: June 2024

In this paper, we generalize to three players the well-known CHSH quantum game. To do so, we consider all possible 3-variables Boolean functions and search among them which ones correspond to a game scenario with a quantum advantage (for a given entangled state). In particular, we provide two new three-player quantum games where, in one case, the best quantum strategy is obtained when the players share a $GHZ$ state, while in the other one, the players have a better advantage when they use a $W$ state as their quantum resource. To illustrate our findings we implement our game scenarios on an online quantum computer and prove experimentally the advantage of the corresponding quantum resource for each game.
The impact of O2O service quality on customer satisfaction and repeat purchase intentions in the food service company
Authors:   The Table and Food Coordinate Society of Korea, Lee Kumho
Published: June 2024

This study explores the impact of O2O service quality on customer satisfaction and continuance purchase intention in a restaurant company setting. To achieve the purpose of this study, we conducted an online survey using the convenience sampling method among customers who have purchased food products or services using O2O services of food service companies living in Seoul and Gyeonggi. The survey was distributed on February 10, 2024, and was open until February 25, 2024, using Google's online survey form. A total of 280 respondents completed the survey, and 268 were used in the empirical analysis, excluding 12 inaccurate responses. The findings through the hypotheses test are as follows. First, service quality, system quality, perceived quality, and information quality of O2O service quality of food service companies have a positive effect on customer satisfaction. Second, customer satisfaction has a positive influence on continued purchase intention. Third, service quality, system quality, and perceived quality of O2O service quality of food service companies have positive influences on continuous purchase intention. These results provide implications for developing O2O service quality where food service companies can utilize O2O service quality to increase customer satisfaction and continuous purchase intention.
Supercritical CO2 and Subcritical H2O Analysis (SCHAN) Instrument: Automated Lipid Analysis for in-situ Planetary Life Detection
Authors: Abrahamsson Victor , Henderson Bryana L. , Friedman Adam , Gross Johannes , Prothmann Jens , Davila Alfonso F. , Williams Amy J. , Lin Ying , Kanik Isik , Zhong Fang
Published: June 2024

The search for extraterrestrial extant or extinct life in our Solar System will require highly capable instrumentation and methods for detecting low concentrations of biosignatures. This paper introduces the Supercritical CO2 and Subcritical H2O Analysis (SCHAN) instrument, a portable and automated system that integrates supercritical fluid extraction (SFE), supercritical fluid chromatography (SFC), and subcritical water extraction coupled with liquid chromatography. The instrument is compact and weighs 6.3 kg, making it suitable for spaceflight missions to planetary bodies. Traditional techniques, such as gas chromatography–mass spectrometry (MS), face challenges with involatile and thermally labile analytes, necessitating derivatization. The SCHAN instrument, however, eliminates the need for derivatization and co-solvents by utilizing neat supercritical CO2 with water as an additive. This SFE-SFC-MS method gives efficient lipid biosignature separations with median detection limits of 10 pg/g (ppt) for fatty acids and 50 pg/g (ppt) for sterols. Several free fatty acids and cholesterol were among the detected peaks in biologically lean samples from the Atacama Desert, demonstrating the instrument's potential for in-situ life detection missions. The SCHAN instrument addresses the challenges of conventional systems, offering a compact, portable, and spaceflight-compatible tool for the analysis of organics for future astrobiology-focused missions.
Dissecting Transmetalation Reactions at the Molecular Level: Aryl Transfer in Copper-Tetraarylborate Complexes
Authors: Kraft Finn , Sommer Marcel , Pereverzev Alexandr Y. , Roithová Jana , Auth Thomas , Koszinowski Konrad
Published: June 2024

Boron-copper transmetalation reactions are practically important, but their detailed mechanisms remain elusive. To im-prove our understanding of these transformations, we have analyzed the systems Cu+/(BArX4)− (ArX = p-X−C6H4 with X = OMe, Me, H, F, Cl, CF3) by a combination of NMR spectroscopy, ESI-mass spectrometry, gas-phase experiments, and quantum chemical calculations. By probing the gas-phase fragmentation of mass-selected adducts of the type [Cu(BArX4)(BPh4)]− and [(MeCN)2Cu2(BArX4)]+, we obtain intimate insight into the microscopic reactivity of these model complexes. In all cases, transmetalation reactions occur, the relative efficiency of which depends on the electronic prop-erties of the aryl groups, the charge of the complex, and the number of solvent molecules bound to the latter. Specifically, electron-rich aryl groups show a higher tendency toward being transferred to copper than their electron-poor counter-parts, whereas the addition of individual MeCN molecules diminishes the propensity toward transmetalation. The quan-tum chemical calculations are essential for the interpretation of the experimental results by providing structural and thermochemical information. The trends derived from the present gas-phase models promise to help in the mechanistic analysis of boron-copper transmetalation in solution.
Hydrogenation of Alkenes Catalyzed by Mn(I) Alkyl Complexes Bearing NHC Phosphine Ligands
Authors: Zobernig Daniel , Stoeger Berthold , Veiros Luis , Kirchner Karl
Published: June 2024

An efficient additive free hydrogenation of alkenes with molecular hydrogen is described. The pre-catalyst is a well-defined bench stable Mn(I) alkyl complex bearing a NHC phosphine ligand. These reactions are environ-mentally benign and atom economic, implementing an inexpensive, earth abundant non-precious metal catalyst. The catalytic process is initiated by migratory insertion of a CO ligand into the Mn-alkyl bond to yield an acyl in-termediate which undergoes rapid hydrogenolysis to form the active 16e Mn(I) hydride catalyst [Mn(PC-iPr)(CO)2(H)]. A range of mono- and disubstituted alkenes were efficiently converted into alkanes in good to ex-cellent yields. The hydrogenation requires a reaction temperature of 60 oC. In all cases, a catalyst loading of 1 mol % and a hydrogen pressure of 50 bar was applied. A mechanism based on DFT calculations is presented which is supported by experimental studies.
Magnetic and transport properties of cubic Fe1-xZnxO solid solutions with a rock salt structure synthesized at high pressure
Authors: Sokolov Petr S. , Baranov Andrey N. , Skipetrov Evgeny P. , Solozhenko Vladimir L.
Published: June 2024

Metastable cubic Fe1-xZnxO solid solutions (0 < x ≤ 0.5) with a rock salt structure (Fm-3m) have been synthesized by a solid-phase reaction between wurtzite ZnO and cubic FeO at 7.7 GPa and 1500 K. The magnetic and transport properties of these solid solutions were studied at ambient pressure over the temperature range of 4.2-300 K, and the presence of antiferromagnetic order has been revealed with a decrease of the Néel temperature from 112 K for Fe0.7Zn0.3O down to 45 K for Fe0.5Zn0.5O. Synthesized rock salt Fe1-xZnxO solid solutions exhibit semiconducting behavior with low electrical resistivity (at 300 K, from 0.37 Ohm∙cm for x = 0 to 28 Ohm∙cm for x = 0.5) and p-type conductivity due to the presence of a deep defect level with an activation energy of 105-144 meV located above the top of the valence band.
Dual Citizenship Among Diaspora Communities
Authors: Iannario Eleonora
Published: June 2024

The new measures that States set up with regard to expatriates and diaspora communities have considerably strengthened the extraterritorial dimension of citizenship. Expatriates have long been transformative actors in their countries of origin: they foment atypical citizenship-granting practices and create renewed identities at home. Moreover, while diasporic States use the rhetoric of engaging the global nation, their policies often target specific populations abroad. Does it depend on what these populations can offer the home State? This also raises the question of how relevant diaspora politics, extraterritorial voting and the extension of citizenship rights beyond the borders of nation-states actually are, and how they can contribute to the ongoing transformation of national citizenship.
Concerning the methodology, this paper will start by analysing the Italian case as an example of atypical granting of citizenship to many emigrants with particular connotations compared to other European countries. In fact, Italy permits natives who settled abroad, as well as persons who were once Italian citizens, residing in the territories that were part of the Italian territory subsequently ceded to the Republic of Yugoslavia, to regain Italian citizenship under certain conditions and, in general, if they are able to attest that none of their direct ancestors unequivocally renounced it. Moving East, this paper will then examine the case of Israel, principally anchored to its Law of Return, which dates back to the period of the idea of exclusive and territorial citizenship, and which still seems to bear witness to a religious heritage. Russian extraterritorial naturalization will conclude the macro-comparison as a way of “creating” new Russian citizens through compulsory “passportization”, which could be an instrument of ambiguous extraterritorial governance. For each of the above-mentioned countries, the paper will examine the normative bases, rules and basic principles, as well as the provisions enacted regulating the granting of citizenship to expatriates. The results will also be interpreted considering the differences in citizenship-granting policies between diaspora communities and other instances.
The effects of attentional focus instructions on the performance of a persistent form-based skill in gymnastics
Authors: Maria Laroëre Bianca , Land William M. , Banátová Kamila , Mudrák Jiří , Abdollahipour Reza
Published: June 2024

External relative to internal focus instructions have been shown to be more effective for enhancing optimal performance across various motor tasks that do not rely on movement quality or movement form. The aim of this study was to examine the effects of an external versus an internal focus of attention on the motor performance of a gymnastic skill that requires static strength and movement form. Participants with previous experience in aerobic gymnastics were asked to perform an L-support task for 4 seconds in three attentional focus conditions: internal focus, external focus, and control, with the order counter-balanced across focus conditions. Two pieces of yellow tape (2×9 cm) were attached to the gymnasts’ feet on the inner side of the navicular bones. Two pieces of red tape (2×9 cm) were wrapped around the distal phalanx of the big toes of the right and left foot. All participants performed four trials in the external focus (focus on keeping red tape below the yellow tape), internal focus (focus on pointing your toes), and control (no-focus) conditions. The results showed that execution faults were smaller in the external focus condition compared to the internal focus and control conditions. No difference was found between the internal focus and control condition. The findings of this study indicate that the external focus is more beneficial than the internal focus and no-focus control condition for enhancing the performance of a static gymnastic skill that requires static strength and movement form.
ИЗВЛЕЧЕНИЕ ОТРАБОТАВШИХ ЗАКРЫТЫХ ИСТОЧНИКОВ ИОНИЗИРУЮЩЕГО ИЗЛУЧЕНИЯ ИЗ ХРАНИЛИЩ БЕСКОНТЕЙНЕРНОГО ХРАНЕНИЯ ОБЪЕКТОВ ЯДЕРНОГО НАСЛЕДИЯ
Authors: Чегонов Н. В. , Ванина Е. А. , Кузнецов А. Ю.
Published: June 2024

В статье представлены возможные способы извлечения отработавших закрытых источников ионизирующего излучения из хранилищ бесконтейнерного хранения, размещенных в пунктах хранения радиоактивных отходов ФГУП «РАДОН», обозначены проблемные моменты, сопутствующие решению данной задачи. Показаны важность и актуальность рассматриваемой темы в рамках реализации программы реабилитации объектов «ядерного наследия» при отсутствии опыта извлечения отработавших закрытых источников ионизирующего излучения из хранилищ подобного типа в современных условиях. Приведено краткое описание и имеющиеся конструктивные особенности хранилищ бесконтейнерного хранения отработавших закрытых источников ионизирующего излучения, размещенных на территории пунктов хранения радиоактивных отходов. Представлены сведения о проведенных и планируемых научно-исследовательских и опытно-конструкторских работах, направленных на реализацию способов извлечения отработавших закрытых источников ионизирующего излучения из хранилищ бесконтейнерного хранения. Описано практическое применение способов извлечения отработавших закрытых источников ионизирующего излучения из хранилищ бесконтейнерного хранения в рамках реализации проектов вывода из эксплуатации пунктов хранения радиоактивных отходов. Сделаны выводы о перспективах, получаемых при реализации представленных способов извлечения отработавших закрытых источников ионизирующего излучения из хранилищ бесконтейнерного хранения.
مراجعة المعايير والاعتبارات الدُّوَليَّة لتصميم المؤسسات الإصلاحيَّة
Authors: Abdullah Ali Bahais Rami , Saeed Alissan Al-Ghamd Mohammed
Published: June 2024

سعت هذه الدراسة إلى مراجعة المعايير والاعتبارات الدوليَّة لتصميم المؤسسات الإصلاحيَّة في ظل التجربة المحليَّة. وهدفت إلى إعادة تحسينها وتطويرها لتتواءم مع الأبعاد المحليَّة (الدينيَّة، والثقافيَّة، والاجتماعيَّة) بالمملكة العربية السُّعوديَّة، وتحافظ على بيئة السجن الأمنيَّة، وتسهم في رفع كفاءة العملية التأهيليَّة والإصلاحيَّة. وقد شمل مجتمع الدراسة عينات من نزلاء إصلاحيَّة مدينة الرياض. واستخدمت الدراسة المنهج الوصفي التحليلي والاستبانة كأداة للبحث. وتكونت عينة الدراسة، وهي عينة عشوائية، من 120 نزيلًا من نزلاء الوحدة السجنيَّة بإصلاحيَّة الرياض النموذجيَّة، وقام الباحث بتوزيع الاستبانات على أفراد العينة. كما استخدم مقاييس الإحصاء الوصفي لوصف خصائص البيانات الأوليَّة للعينة، واعتمد على النسب المئوية والتكرارات والمتوسطات الحسابيَّة والانحرافات المعياريَّة للإجابة عن أسئلة الدراسة.
وخلصت الدراسة إلى مجموعة من النتائج من أهمها: حصر قائمة مطوَّرة من المعايير والاعتبارات التصميميَّة لأهم الاحتياجات الإصلاحيَّة والتأهيليَّة للنزلاء، يجب الأخذ بها عند تصميم الإصلاحيات.
ومن أجل الارتقاء بمباني الإصلاحيات في المملكة العربية السُّعوديَّة توصي هذه الدراسة بإعادة النظر والاهتمام بالبرمجة المعماريَّة وبمستوى تصميم مباني الإصلاحيات، والحذر من تكرار النماذج العالميَّة التي لا تتوافق مع ثقافة المجتمع المحلي.
المسؤوليَّة الجنائيَّة عن التصديق الإلكتروني لعقد النكاح من غير الزوجين
Authors: Mohammad Otani Safaa , Abdullah AI-usmail Jumanah Abdulaziz
Published: June 2024

يُعدُّ عقد النكاح من العقود ذات الأهمية البالغة في حياة الفرد والمجتمع؛ لذا جرَّمت القوانين والأنظمة تصديق عقد النكاح (من غير أطرافه) بموجب الأحكام العامة في التزوير، لكن السؤال الذي يُطرح مع اعتماد التصديق الإلكتروني لعقد النكاح في المملكة العربية السعودية عن طريق رمز التحقق، ما أحكام المسؤوليَّة الجنائيَّة عن التصديق الإلكتروني لعقد النكاح من غير الزوجين ودون رضاهما؟ تبرز أهم الفرضيات في التصديق الإلكتروني لعقد النكاح من غير الزوجين في حالات ثلاثة هي: الإكراه على الزواج، العدول عن الزواج، تزوير التقرير الطبي.
وقد توصلت الدراسة إلى نتائج منها: تعدد النصوص التي يمكن أن تجرم التصديق الإلكتروني لعقد النكاح من غير الزوجين، ومن ثَمَّ تتعدد الأوصاف الجرميَّة، ويمكن للقضاء في هذه الحالات تطبيق أحكام اجتماع الجرائم المعنوي، وتطبيق النص الأشد، وإن كان في ذلك معوقات لا يستهان بها، منها: عدم استقرار الأحكام القضائيَّة وتناقضها.
وأوصت الدراسة باعتماد تصديق عقد النكاح عن طريق التوقيع البيومتري، وتعديل نظام الأحوال الشخصيَّة لسد الفراغ التشريعي في هذا الشأن، وتضمينه نصًّا صريحًا يقضي بمسؤوليَّة من يقوم بتصديق عقد النكاح من غير الزوجين.
Measuring Line Length: A New Signature Feature in Forensic Examination
Authors: Goher Ahmed Saad , Vaccarone Paolo
Published: June 2024

The scientific methodology for forensic examination of handwriting is based on studying the individual handwriting features and characteristics that distinguish its writer from others.
The general qualities and the more detailed ones, some of which are "static" and refer to pictorical elements, while others refer to the pen's "dynamic" movement are investigated. Forensic handwriting experts during their daily activities are asked to analyse various features, many of which are suggested by the most prominent authors (connections, dimensions, proportions, shape, inclination, line quality, etc.), some of which are measurable, while others can only be inferred. However, the recent emergence of digitally captured signature (DCS) technology in the forensic field, has enabled the expert to analyse and evaluate new aspects, such as the length of the line. In the present study, an attempt has been made to study the line length and its possible uses in forensics handwriting examination processes. The authors, with different backgrounds and with different writing styles (Latin alphabet - Arabic alphabet), have tried to go further than the so far known study of handwriting for forensic purposes, studying and comparing the genuine lengths of the signature line and those that are forged (simulated).
Quality Enhancement of MIROS Wave Radar Data at Ieodo Ocean Research Station Using ANN
Authors: Park Donghyun , Do Kideok , Yun Miyoung , Jeong Jin-Yong
Published: June 2024

Remote sensing wave observation data are crucial when analyzing ocean waves, the main external force of coastal disasters. Nevertheless, it has limitations in accuracy when used in low-wind environments. Therefore, this study collected the raw data from MIROS Wave and Current Radar (MWR) and wave radar at the Ieodo Ocean Research Station (IORS) and applied the optimal filter by combining filters provided by MIROS software. The data were validated by a comparison with South Jeju ocean buoy data. The results showed it maintained accuracy for significant wave height, but errors were observed in significant wave periods and extreme waves. Hence, this study used an artificial neural network (ANN) to improve these errors. The ANN was generalized by separating the data into training and test datasets through stratified sampling, and the optimal model structure was derived by adjusting the hyperparameters. The application of ANN effectively improved the accuracy in significant wave periods and high wave conditions. Consequently, this study reproduced past wave data by enhancing the reliability of the MWR, contributing to understanding wave generation and propagation in storm conditions, and improving the accuracy of wave prediction. On the other hand, errors persisted under high wave conditions because of wave shadow effects, necessitating more data collection and future research.
Riser Configuration Design for a 15-MW Floating Offshore Wind Turbine Integrated with a Green Hydrogen Facility
Authors: Kim Sung-Jae , Park Sung-Ju
Published: June 2024

Green hydrogen presents a sustainable and environmentally friendly solution for clean energy production and transportation. This study aims to identify the optimal profile of green hydrogen transportation risers originating from a floating offshore wind turbine (FOWT) integrated with a hydrogen production facility. Employing the Cummins equation, a fully coupled dynamic analysis for FOWT with a flexible riser was conducted, with the tower, mooring lines, and risers described using a lumped mass line model. Initially, motion response amplitude operators (RAOs) were compared with openly published results to validate the numerical model for the FOWT. Subsequently, a parametric study was conducted on the length of the buoyancy module section and the upper bare section of the riser by comparing the riser’s tension and bending moment. The results indicated that as the length of the buoyancy module increases, the maximum tension of the riser decreases, while it increases with the lengthening of the bare section. Furthermore, shorter buoyancy modules are expected to experience less fatigue damage, with the length of the bare section having a relatively minor impact on this phenomenon. Consequently, to ensure safety under extreme environmental conditions, both the upper bare section and the buoyancy module section should be relatively short.
The Correlation between Body Composition and Physical Fitness Parameters in High Theological School Students
Authors:   University of Nis, Faculty of Sport and Physical Education, Herodek Romina , Zivkovic Mladen ,   University of Nis, Faculty of Sport and Physical Education, Aleksić Veljković Aleksandra ,   University of Nis, Faculty of Sport and Physical Education, Katanic Borko ,   Montenegrin Sports Academy, Bjelica Dusko ,   University of Montenegro, Faculty for Sports and Physical Education, Curic Mijo ,   Josip Juraj Strossmayer University, Faculty of Kinesiology
Published: June 2024

Previous research findings support the claim that physical activity (PA) and maturation result in changes in physical fitness (PF) and body composition (BC) parameters. Fitness assessment tests are especially important for monitoring the health of adolescents. The purpose of this study was to find the correlation between BC and PF parameters in studnts enrolled in High Theological School in Niš. Thirty-seven male students living in boarding schools were included in the participant sample. The average age of the participants was 17.48±1.48 years. The body composition analyser Omron BF 511 (Omron, Tokyo, Japan), was used to measure the BC values. A modified Eufitmos testing protocol was determined to evaluate PF parameters such as: Progressive aerobic cardiovascular endurance run (Pacer), 1-Mile run (1MR), Push-ups (PU), Handgrip (HG), Standing broad jump (SBJ), 20-Meter run (20mR), Back-saver sit and reach (BSR), and Body mass index (BMI). The results showed that the weight status parameters were highly correlated with each other. Regarding PF parameters, they correlated moderately with each other. The correlation analysis between BC and PF parameters showed that BMI, Fat%, and Muscle% achieved moderate correlations with PACER, VO2max, PU, SBJ, and 20mR, while BW had a significant correlation only with HG and PU. Also, BH had a moderate correlation with VO2max, PACER, SBJ, and HG. The findings indicate a correlation between body composition and physical fitness parameters among theology students. However, a suggestion for further research is to conduct multiple regression analysis, which would reveal the relationship between the overall body composition composite and the fitness of the students, rather than just individually determined parameters.
The role of student fieldwork activities in the education of Spatial Management on the example of classes at the University of Gdańsk
Authors: Czochański Jarosław T. , Korwel-Lejkowska Barbara , Staszek Wojciech , Zawadzka Alicja K.
Published: June 2024

In tertiary education, especially in vocational and Earth science-related fields of study, fieldwork activities are of great importance. They are a form of practical activities, complementing the students’ work experience and the theoretical knowledge imparted in lectures. This is especially true for courses in which human interaction with the environment creates new spaces and new conditions for the functioning of the geographical environment – including geography, environmental protection, landscape architecture, urban planning, spatial management. Contact with real situations in geographical space, the possibility to see natural and anthropogenic phenomena, the possibility to observe the objects of research, phenomena and features of space and natural conditions for spatial management, and above all the confrontation of theoretical information with their direct and material physical dimension are all fundamental elements for students to build their knowledge and skills. This applies to spatial analysis and creative thinking, leading to the ability to combine facts, as well as to the levelling of knowledge between individuals. More than 40 years of experience with fieldwork activities conducted for students of geography and more than 15 years of experience working at the faculty of spatial management at the University of Gdansk, clearly indicate the very high importance of field classes in the didactics of these majors, and even the dominant role in the consolidation of acquired theoretical knowledge. The authors share their experiences of conducting such classes, present the core curriculum and subject matter of field classes, indicating their significant educational importance and positive reception by students.
The Influence of Online Discussions on the Formation of Argumentation skills in Future Engineers
Authors:   Novosibirsk State University of Architecture and Civil Engineering, Novosibirsk, Russia, Mikheev Sergey
Published: June 2024

The paper presents the results of empirical research on the effectiveness of online discussions (OD) as a tool for forming argumentation skills among technical university students. On the one hand the actuality of the research is conditioned by the significance of discussion-based training of modern technical specialists under conditions of networking and socio-technical transformation of engineering activity. On the other hand, this problem is not elaborated in the domestic, pedagogies and also contradictory and poorly studied aspects in the foreign one. The results of the present study are important for scientifically substantiated methodological implementation of new approaches to engineering training under conditions of digitalization of education and increased requirements for discussion and information competence of a modern technical specialist. The research was conducted on the basis of two Novosibirsk universities and covered 350 second – and third-year students in "construction" and "automation and computer engineering" baccalaureate specialties. The analysis of the OD results conducted in VLE "Moodle" using "debate" (synchronous discussion) and "forum" (asynchronous discussion) methods showed that inclusion of online-discussions in to the educational process of technical universities improves argumentation skills of future engineers by 20-30 %. The data obtained at the stages of the forming and control experiment let us reveal a higher efficiency of asynchronous forms of online-discussions in comparison with synchronous ones. Their advantage is to 28,68 %, depending on the formed component of argumentation. Based on the results of the study recommendations were given to teachers to improve the effectiveness of social interaction of students during OD, including the feasibility of replacing debates with synchronous discussion methods, more focused on the joint search for solutions.
THE ROLE OF THE INFORMATION ENVIRONMENT IN THE CHILD’S IMAGE OF THE WORLD
Authors:   Moscow State Pedagogical University, Molchanova Galina V. , Snurnitsyna Valeriya D. ,   Municipal educational institution Lyceum No. 4
Published: June 2024

Preschool-aged children actively develop their sense of time based on the routine and cyclical moments of daily life, leading to the emergence of not only a present awareness but also primary concepts of the future. The informational environment, as one aspect of a children’s image of the world, becomes integrated into their life at the level of routine components (daily leisure activities surrounded by gadgets, media, and video broadcasts on various devices). The informational environment, being a part of the routine moments of a preschooler’s daily life, can significantly influence the formation of a child’s worldview (including the present and near future), coloring it with different tones (creating confidence in tomorrow or anxieties and fears). The article presents results of an empirical studying the specifics of children’s world image under the influence of information environments of varying intensities. It shows that a high-intensity information environment influences the formation of a negatively tinted worldview and future outlook in preschool children, leading to low life satisfaction and a pronounced need for stability in the external world. Boys were found to be more engaged in the informational environment than girls. It was observed that children in low-intensity information environments pay more attention to direct communication with parents and siblings, experience positive emotions from family interactions, have a positively tinted worldview, and are optimistic about their future in it.
STYLISTIC FEATURES OF ACTIVITY AND THE INTEGRAL INDIVIDUALITY OF PRACTICAL PSYCHOLOGISTS IN THE EDUCATIONAL SYSTEM
Authors:   Moscow State Pedagogical University,, Gerasimenko Natal’ya А.
Published: June 2024

The work considers the stylistic features of the activities and the integral individuality of practical psychologists in the educational system. The article presents the degree of development of five professional actions (adaptive, regulatory, organizational, ascertainment actions and transformation actions), and describes the manifestations of individuality properties (personal, psychodynamic and properties of the nervous system). Particular attention is paid to identifying connections between stylistic features of activity and integral individuality. The study sample was 74 people (N = 74). Correlations between the components of the activity style and the characteristics of the integral individuality were discovered. The most connections were found by such a component of the activity style as organizational actions – those actions correlate with 12 properties of the integral individuality, which confirms the leading importance of the above component in the structure of the activity style and the integral individuality. The implementation of professional tasks through professional actions is facilitated both by personality traits in their significant part, and by temperamental properties. Professional actions are identified, the expression of which is influenced only by the personal level of individuality. They include the actions of adaptation and ascertainment. The article also describes professional actions, that are simultaneously influenced in their expression by properties related to different levels of individuality: personality properties and temperament properties. The properties of the nervous system do not affect the severity of professional actions.
CONTENT SUBMISSION TECHNOLOGIES IN MODERN CORPORATE MEDIA ON THE EXAMPLE OF THE MEDIA COMPANY “SBERPRO MEDIA”
Authors:   Russian State University for the Humanities, Zhdanova Anastasiya V.
Published: June 2024

The article considers the popularity of corporate media in the modern Russian media landscape. The author cites the results of studies that indicate the demand for this type of media. In addition, the issue of content submission technologies, which are most popular among media authors, is being considered. Such technologies include data visualization using infographics, graphs and tables, as well as content submission through expert opinion. The author tracks the use of these technologies using the example of materials from one of the popular modern corporate media. This is the media bank of Sber “SberPro Media”.
Paradigmas de formação docente em cursos de licenciatura em química no estado de Mato Grosso
Authors: Ribeiro Marcel Thiago Damasceno , Mesquita Nyuara Araújo da Silva
Published: June 2024

Este artigo busca compreender como se expressa o Estágio Supervisionado obrigatório nos Projetos Pedagógicos de Cursos de Licenciatura em Química de Instituições de Ensino Superior Públicas no estado de Mato Grosso? Como resultados verifica-se que as propostas de Estágio Supervisionado nos projetos analisados se apresentam de forma diferenciadas, mas que convergem na necessidade de uma melhor formação no contexto da ação pedagógica, e o paradigma de formação presente nos Projetos Pedagógicos de Cursos analisados se pautam na racionalidade prática.
Concurso público para o magistério da Bahia
Authors: Leal Jayne Santos , Silva Mara Aparecida Alves da , Lima Geronimo Lopes
Published: June 2024

O concurso público é um processo garantido por lei utilizado para selecionar candidatos, aptos a desenvolverem uma determinada função. Este artigo trata de uma pesquisa qualitativa e documental, que analisou as provas para concurso público do magistério baiano com questões objetivas e discursivas da área de química nas edições 2011, 2018 e 2022. Em relação aos dados, foi identificado uma maior concentração de questões voltadas para área de química geral, e por outro lado, uma escassez de questões de química orgânica. As questões discursivas articulam os conteúdos específicos com áreas da educação como a contextualização, por exemplo.
Principais dificuldades descritas no aprendizagem de química para o Ensino Médio
Authors: Albano Wladimyr Mattos , Delou Cristina Maria Carvalho
Published: June 2024

Para saber quais são as principais dificuldades apresentadas no processo de ensino-aprendizagem de Química no Ensino Médio, é necessário consultar a literatura especializada e reunir as publicações que as descrevem. Fazendo um recorte de vinte anos de publicações, utilizando-se a inclusão e exclusão do trabalho, de acordo com os critérios estabelecidos, chegou-se ao resultado de sessenta e seis publicações. A análise de conteúdo foi aplicada na leitura dos textos, que foram organizados por categorias. Os resultados demonstraram que grande parte das dificuldades apontadas são decorrentes de aulas descontextualizadas, falta de aulas experimentais, fragmentação da disciplina, metodologias antigas e tradicionais, que ainda utilizam somente o giz e quadro negro, e transmitem o conteúdo esperando que o aluno atue como um tipo de receptor desse conteúdo, além de outros problemas pontuais relacionados ao conteúdo programático, principalmente relacionados aos cálculos que envolvam aritmética.
A fluidez do Espaço Esco(Lar) em tempos de pandemia no Amazonas
Authors: Souza Ivan Nunes de , Simão Maria Olívia de Albuquerque Ribeiro
Published: June 2024

Em 2020, a pandemia de Covid-19 emerge como um evento inesperado e impactante no meio ambiente, assemelhando-se àquelas situações descritas por Tuan como "paisagens do medo". O necessário confinamento e distanciamento social conduziram a um uso intenso das tecnologias de comunicação, especialmente das redes sociais, intensificando a fluidez nas relações com repercussões sociais e educacionais. Diante disso, esta pesquisa analisou a percepção de professores e alunos do Amazonas sobre a dinâmica social e educacional no âmbito doméstico e escolar. No percurso metodológico, de caráter qualitativo, empregaram-se pesquisa documental, entrevistas semiestruturadas com 30 professores e 30 estudantes do 3º ano do ensino médio, além de análise de conteúdo. Os resultados indicam que o lar assumiu a configuração de "Espaço Esco(lar)", tornando-se um ponto de convergência de demandas, onde a fluidez nas relações se tornou uma característica marcante do contexto pandêmico recente, e o acesso à educação foi temporariamente comprometido, adquirindo novas e urgentes configurações. Além do perigo iminente de contágio pela Covid-19, outros medos e ameaças emergiram de maneira difusa entre professores e alunos durante a pandemia, assumindo a forma de "medo líquido". Ao retornar à escola, observou-se que a sensação de fobia estava diretamente relacionada ao temor de frequentar locais que pudessem representar risco de contágio, aqui denominado "virulofugare", associado à sensação ou intenção de evitar ambientes contaminados.
Carta a Naomar de Almeida-Filho e Luis Eugenio de Souza
Authors: Nascimento Ives Romero Tavares do , Fideles Luiz Felipe de Sousa
Published: June 2024

Este texto tem como objetivo realizar comentários sobre a experiência de criação da Universidade Federal do Cariri (UFCA), no Estado do Ceará, Brasil, a partir do texto “Uma Protopia para a Universidade Brasileira”, de autoria de Naomar de Almeida-Filho e Luis Eugenio de Souza. O estudo é feito a partir de uma pesquisa qualitativa, realizada entre os anos de 2014 e 2018. Por meio da triangulação de dados primários e secundários, os comentários que são feitos ilustram a oportunidade de se considerar a UFCA como universidade protópica com base em três argumentos: a pluralidade de atores sociais envolvidos em sua montagem, a consideração de fatores regionais contextualizados, e a compreensão de que uma universidade é uma organização efetivamente humana. Com base nisso, são feitas conexões de debate com a proposta do modelo de universidade protópica para o desenvolvimento do Brasil.
Consumer safety of feed additives containing selenium
Authors:   EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Bampidis Vasileios , Azimonti Giovanna , Bastos Maria de Lourdes , Christensen Henrik , Durjava Mojca , Dusemund Birgit , Kouba Maryline , López‐Alonso Marta , López Puente Secundino , Marcon Francesca , Mayo Baltasar , Pechová Alena , Petkova Mariana , Ramos Fernando , Villa Roberto Edoardo , Woutersen Ruud , Innocenti Matteo Lorenzo , Kujawa Marianna , Pizzo Fabiola , Bories Georges , Gropp Jürgen
Published: June 2024

Abstract
Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety for the consumer of products from animals fed diets with feed additives containing selenium as an active substance. Based on the limited data set available and the several uncertainties, the FEEDAP Panel concluded that the use of organic selenium at the currently maximum authorised use level of 0.2 mg supplemented selenium from organic sources/kg complete feed (within a maximum of 0.5 mg total selenium/kg complete feed) leads to an exceedance of the UL for all the population categories (except elderly and very elderly), suggesting a concern for consumer safety. It was not possible to conclude on the safety of the currently maximum use level of 0.5 mg total selenium/kg complete feed for all consumer categories. Additional data from studies specifically designed to measure deposition of selenium in tissues and products from animal origin resulting from the use of the different sources of selenium would be required to perform a proper risk assessment.
Enzymatic precipitation of cadmium by means of native bacteria of the genus Citrobacter.
Authors: Mogollón L. I. , Rodríguez M. R. , Ramírez N. E. , Zaucher F.
Published: June 2024

Native strains were isolated from heavy metal contaminated waters and soils. The microorganism selection was conducted based on the quantification of the phosphatase enzyme activity. Citrobacter cells in batch studies showed five times more enzymatic activity than that of available collection cultures and the reported values in previous studies using other strains. Uptake results show that cadmium removal increases with cell exposure time when the cell are in the presence of the enzymes substrate glycerol 2-phosphate. Metal enzyme affinity improves by increasing solution pH to 8-1 0. Precipitation is caused by passive bounding of cadmium to reactive groups at the cell wall and the "in situ" metal accumulation as nonsoluble phosphate on microbial cells wall.