bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on T-shirt-style design based on Kansei image using back-propagation neural networks
Authors: Xu Han , Ren Ruoan , Chen Han
Published: December 2023

Users’ Kansei image preferences have become one of the most important factors influencing purchase decisions. However, defining Kansei image can be complex. To address this issue, researchers have widely applied back-propagation neural networks due to their capacity to handle extensive data, adaptively adjust weights and biases, conduct multi-class classification and regression predictions, and offer interpretability analysis, among other features. In this study, a clothing-style design model based on users’ Kansei image cognition is proposed, using collarless T-shirts as an example. Furthermore, the attributes of T-shirt patterns are quantified using parametric graphics principles, and a semantic scale system for emotions is established through user research. The quantified sample data and corresponding semantic scale scores are then used as inputs for training a back-propagation neural network algorithm. Consequently, a design model grounded in users’ Kansei image cognition is developed, resulting in five optimal clothing design forms across various Kansei image categories. Additionally, the styles are showcased through the Style 3D platform, and the design evaluation is presented using radar charts. The results demonstrate that the five female T-shirt designs generated by the model align with users’ style preferences based on Kansei image.
An Experimental Analysis of Patient Dumping Under Different Payment Systems
Authors: Finocchiaro Castro Massimo , Lisi Domenico , Romeo Domenica
Published: December 2023

Physicians behave differently depending on the payment systems, giving rise to several problems such as patient dumping in which patients are refused because of economic or liability reasons. This paper tests whether and to which extent the adoption of either fee-for-service or Salary system induces physicians to practice patient dumping. Through the combination of an artefactual field experiment and a laboratory experiment, we test whether the risk of being sued for having practiced dumping can affect physicians’ behavior. Dumping is more often observed under Salary than under FFS. The introduction of dumping liability only mildly reduced dumping practice, though the provision of services increased. Our findings call for healthcare policy makers looking at the interplay between remuneration schemes and liability risks, and accounting for the trade-off between the reduction of the risk of being sued for patient dumping and the increase of the costs of the provision of medical services.
Does Abolishing a Copayment Increase Doctor Visits? A Comparative Case Study
Authors: Haaga Tapio , Böckerman Petri , Kortelainen Mika , Tukiainen Janne
Published: December 2023

Insurance coverage increases health care consumption, but less is known whether moderate copayments affect adults’ primary care utilization in a system characterized by gatekeeping. We analyze whether abolishing a 14-euro copayment for visits to general practitioners (GP) in Helsinki, the capital of Finland, increased the number of GP visits among adults and especially among low-income individuals. Using a difference-in-differences (DD) design and combining several administrative registers from 2011 to 2014, we find that the abolition is associated with only a small increase in GP visits (+0.04 visits annually, or +4.4 %, for all adults). The increase is driven by low-income adults (+0.06 visits, or +4.5 %, at the bottom 40 %). Although the point estimates are rather robustly positive, the conclusions regarding the statistical significance are sensitive to how we account for clustering in a setting characterized by only one treated cluster and a finite number of comparison clusters.
Aid in Conflict: Determinants of International Aid Allocation to Ukraine During the 2022 Russian Invasion
Authors: Schmidt Constantin
Published: December 2023

Governments have responded to the 2022 Russian invasion by committing substantial aid to Ukraine. This paper investigates this aid on a cross-national basis utilizing differences in economic, political, and geographic characteristics of donor countries. It advances the comprehension of aid allocation to Ukraine and argues that donors’ interests heavily influence bilateral aid to Ukraine. Empirically, a two-stage approach serves to identify the main determinants of aid allocation, analyzing both the initial decision to donate and the level of aid generosity. The regression analyses show that wealthier, more populous, more democratic countries as well as those who trade with Russia are more likely to support Ukraine while the impact of these factors is more nuanced when determining aid generosity. Ceteris paribus, EU and NATO members are more likely to donate and more generous in their aid efforts. The results also shed light on the complex role of former Soviet republics.
Study on the preparation of glycerylphosphorylcholine by transesterification under supported sodium methoxide
Authors: Rao Yiwen , Zhou Lele , Fan Zejing , Li Hongya , Yan Biao , Zhang Xiaoli
Published: December 2023

Glycerylphosphorylcholine (GPC) was prepared by transesterification using supported sodium methoxide as catalyst and natural lecithin as raw material. Sodium methoxide has been proved to be an effective catalyst for the preparation of GPC, which is easy to recover and reuse. After six repeated uses, its stability is satisfactory. The effects of agitation speed, catalyst dosage, and reaction temperature on the reaction were investigated, respectively, and the optimum conditions for preparing GPC catalyzed by supported sodium methoxide were found: the concentration of phosphorylcholine was 0.1 mol·L−1, the stirring speed was 600 rpm, the amount of catalyst was 7.5 g·L−1, the reaction temperature was 45°C, and the reaction time was 4 h; then, the conversion rate of phosphatidylcholine could reach 99%. At the same time, the reaction kinetic model was established based on the mechanism of the transesterification, and the experimental data were compared with the calculated values; it was found that the experimental data fitted the model well. Finally, the reaction activation energy obtained by the Arrhenius equation is 41.6 kJ·mol−1, which indicates that the supported sodium methoxide has good catalytic performance in this reaction system.
Recent progress on non-noble metal catalysts for the deoxydehydration of biomass-derived oxygenates
Authors: Geng Xiyan , Xu Mengyu , Yang Cui , Zhang Jiaxiang , Fang Zheng , Sun Ruiyan , Guo Kai
Published: December 2023

The utilization of renewable energy represents an effective way to address current issues associated with fossil fuels. Biomass is considered one type of renewable energy resources with abundant reserves on earth. However, the high oxygen contents and high degree of functionalization of biomass have hindered the direct exploitation of biomass for the production of fuels and chemicals. Considerable efforts have been devoted to developing effective deoxygenation methods capable of reducing the oxygen contents of biomass and its derivatives. The deoxydehydration (DODH) of biomass derivatives to generate olefins over oxophilic metal catalysts is considered a very useful approach in eliminating vicinal OH groups. In recent years, catalysts based on non-noble metals such as Mo, W, and V featuring good catalytic performance have emerged as promising alternatives to classical noble Re-based catalysts for DODH. This review aims to summarize the progress on the DODH of biomass-derived vicinal diols catalyzed by non-noble metals such as Mo, W, and V, with an emphasis on the preparation of catalysts, optimization of experimental conditions, and mechanistic studies. By surveying the performance of non-noble metal catalysts, key factors that determine the DODH activity were proposed, including the choice of reductant, the electronic and steric effects of ligand, and the interaction between solid support and metal center. The latter two could adjust the redox properties of metal centers by directly bonding with ligand or solid support.
Perception of social accountability among medical students in Egypt
Authors: Amin Radwan Reham Salah , Ahmed Gehad Sabry
Published: December 2023

Objective

Assessment of the perceived SA for medical students in Beni-Suef University, Egypt.

Methods

An analytical cross-sectional study was conducted over a period of 6 months among medical students at faculty of medicine, Beni-Suef University through an online survey using google form. For data collection, an English validated questionnaire developed in partnership by the International Federation of Medical Students Association (IFMSA) and the Training for Health Equity Network (THEnet) was used.

Results

Students’ mean SA score was 17.3±7.1. Perceived SA scores ranged from 18 to 26 for 40.9% of participants, while 38.9% of them had scores ranging from (9-17), indicating that the faculty is doing well, However, there is a need to identify areas of weakness and advocate for strategies to improve SA among students. Furthermore, there were statistically significant differences in age, gender, residence, and academic year across students with different scores.

Conclusion

Although half of the medical students of Beni-Suef university had acceptable SA, but there are areas for improvement and weakness to fix within the faculty.
Coupled heat and mass transfer mathematical study for lubricated non-Newtonian nanomaterial conveying oblique stagnation point flow: A comparison of viscous and viscoelastic nanofluid model
Authors: Li Shuguang , Farooq Waseh , Abbasi Aamar , Khan Sami Ullah , Rafiq Maimona , Ijaz Khan Muhammad , Abdullaeva Barno Sayfutdinovna , Awwad Fuad A. , Ismail Emad A. A.
Published: December 2023

The lubrication phenomenon plays a novel role in the chemical industries, manufacturing processes, extrusion systems, thermal engineering, petroleum industries, soil sciences, etc. Owing to such motivated applications, the aim of the current work is to predict the assessment of heat and mass transfer analysis for non-Newtonian nanomaterial impinging over a lubricated surface. The flow is subject to the oblique stagnation point framework. The lubricated phenomenon is observed due to viscoelastic nanofluid. The impacts of chemical reaction are also endorsed. The fundamental conservation laws are utilized to model the flow problem and similarity transformation are used to transform the governing system of partial differential equations into ordinary differential equations. A thin layer of power law lubricant is used to enhance the lubrication features. The numerical object assessment regarding the simulation process is captured by implementing the Keller Box scheme. The physical characterization endorsing the thermal fluctuation with flow parameters is inspected.
Durability Properties of Ambient Cured Geopolymer Mortar Made from Rice Husk Ash–Based Alkali Activator: A Comparative Study with Conventional Alkali Activator
Authors: Das Shaswat Kumar , Nayak Manoj Kumar , Patro Sanjaya Kumar , Suda Yuya
Published: December 2023

Geopolymers/alkali-activated materials (AAMs) are widely regarded as ecofriendly and durable alternatives to portland-based cement concrete. However, commercial alkali activators, especially the sodium silicate used to manufacture geopolymers/AAMs, are associated with a significant amount of carbon emission during their production. In this study, the feasibility of using rice husk ash (RHA) as a source for an alternative sustainable alkali activator has been explored at ambient temperature curing, and the durability properties of the geopolymer mortars (GPM) has been investigated. Three different concentrations of sodium hydroxide (SH), i.e., 20, 24, and 27 wt. % solutions, have been taken for the synthesis of RHA alkali activator used in synthesis of GPM, and another GPM with conventional alkali activator has also been synthesized for comparative study. Durability studies such as water absorption, sorptivity, sulfate resistance, and acid resistance were evaluated extensively in terms of change in weight and compressive strength. The experimental results revealed that the GPM made with 24 wt. % SH-RHA–based activator solution (R24) has optimal performance considering all the durability parameters and has a close correlation to the results obtained for the control GPM made with conventional alkali activator (C24). The microstructural studies further revealed that the gel structure of the R24 is compact and homogeneous, similar to that of C24; however, the former has a N-A-S-H–dominated gel matrix and the latter consists of N-(C)-A-S-H–type gels.
Submarine discharge of underground waters: research experience, еxploration practices, methods and technologies for possible use
Authors: IEMELIANOV V.O. , KIRIAKOV P.O. , RYBAK O.M. , PARYSHEV O.O. , MASLAKOV M.O. , KLOCHKOV S.V.
Published: December 2023

In view of the need to solve problems related to the population's access to sufficient drinking water, the search for submarine discharge zones is currently the most important economic task. Infiltration waters generated within the land, being filtered through bottom sediments, are directed to the seas and oceans and are irretrievably lost for practical use. According to numerous data on the dynamics of underground water supply systems, the movement of underground flows in coastal areas under undisturbed conditions is always directed towards the sea, where discharge is carried out. Infiltration waters flowing from the land to the seabed are predominantly distributed in the shelf zone, but under favorable conditions (tectonic disturbances, paleo-river beds, etc.) their flows can reach the continental slope, so significant areas of the ocean shelf deserve to be explored for fresh and slightly salty, brackish water. In some countries, they are already used to provide water supply. The article assesses the feasibility of practical use of subaquatic waters using specific examples. It analyzes hydrogeological potential, economic factors, and presents technical concepts for water intake, transportation, and treatment. Based on these factors, we are analyzing the possibility of replacing the seawater desalination process with its extraction from submarine underground horizons on the shelf. The article provides a comparative assessment of energy consumption obtained from fossil fuels in the process of seawater desalination and its extraction from underwater horizons. The material presented in the article shows that there are no insurmountable obstacles to the use of submarine discharge waters as an additional source of drinking water.
Mantle gravitational anomalies in the regions of Eurasia, North America and the Atlantic
Authors: GORDIENKO V.V. , GORDIENKO L.Ya.
Published: December 2023

The construction of density models of the Earth's crust and upper mantle along the system of profiles crossing Eurasia and North America, the Atlantic Ocean, and transition zones between continents and oceans, begun by the works of the authors of recent years, is continued. In the crust, they are plotted by velocity sections along DSS profiles. The calculated effect of the section in anomalous densities in relation to the normal platform mantle (minus 870 mGl) corresponds to the zero observed field (Bouguer anomalies on land and Fay anomalies on sea). This value is established experimentally on the East European platform, where the geological and geophysical knowledge is the maximum. In the upper mantle, the authors' ideas about deep processes are used. They are associated with variants of heat and mass transfer under various endogenous regimes. Based on the results of these processes, temperature distribution that distinguish the densities of mantle rocks in each region from platform ones was determined. The gravitational effects calculated for such anomalous models are summarized with the crustal ones. Regions with all types of endogenous regimes were studied: platforms, zones of recent activation, geosynclines and rifts of different ages, mid-ocean ridge, oceanic depressions, marginal trench, island arc, back-arc depression. The total has compared with the observed fields. In all previously studied regions, the obtained differences do not exceed those explained by the errors of observations and calculations. Thus, the construction of density models of the tectonosphere becomes one of the methods for verifying the used schemes of deep processes. In the regions covered by recent activation and in the transition zones between continents and oceans, the differences between the experimental and calculated data turned out to be the maximum. Therefore, the work was continued using other DSS profiles, mainly on the continental platforms. The result generally confirmed the previous one, revealing additional modeling problems associated with velocity cross sections of the earth's crust.
U-Pb age of monazite from hypersthenic quartzite of the Yatran river basin (Yatran block of Ukrainian Shield)
Authors: STEPANYUK L.M. , SYOMKA V.O. , BONDARENKO S.M. , ZIULTSLE O.V. , KURYLO S.I. , DOVBUSH T.I. , HULKO V.V.
Published: December 2023

Among the crystalline rocks of the Middle Bug region, which are mapped as the Dniester-Bug series in the valley of the Yatran river in the area of the village Rogove, quartzites were discovered, which, unlike the quartzites of the Bug series, are mainly composed of quartz with a small number of feldspars. At the same time, hypersthene plays a prominent role in their composition. To find out the time of crystallization of monazite and the primary nature of quartzite, a sample of hypersthenic quartzite (sample 24/16), which is common on the left bank of the Yatran River (Rogove village), was taken. Under binoculars and a polarizing microscope, the internal structure of zircon crystals was studied in artificial preparations, and the spatial relationship with rock-forming minerals was studied in transparent sections under a polarizing microscope. Age was determined based on the results of U-Pb isotopic dating of multigrain monazite samples. Chemical preparation of multigrain samples of monazite for isotopic dating was performed according to the standard method [5]. A mixed 235U+206Pb tracer was used to determine the content of uranium and lead in monazites. According to the results of U-Pb isotopic dating, the time of crystallization of monazites from hypersten-containing quartzite of the Yatran river basin occupies an intermediate position (2044,7±9,2 million years) between the age of monazites from quartzites common in Kosharo-Olexandrivska structures (2062,4±4,4 million years) and Shamrayivka structures (1857,5±1,1 million years).
Análisis del léxico inglés presente en la poesía de Nicolás Guillén
Authors: Ruiz Miyares Leonel
Published: December 2023

El Poeta Nacional de Cuba, Nicolás Guillén, ha sido estudiado por múltiples especialistas y críticos. Sin embargo, un estudio total del léxico de toda su poesía con la obtención de una pormenorizada estadística aún no se ha llevado a cabo. En la actualidad, el Centro de Lingüística Aplicada de Santiago de Cuba acomete una amplia investigación que clasifica, describe y analiza, con la utilización de técnicas de Procesamiento del Lenguaje Natural, los diferentes componentes del vocabulario poético de Nicolás Guillén como parte de su idiolecto, para así detallarlos estadísticamente con todas sus particularidades. Este artículo centra su análisis en la descripción del vocabulario inglés, como parte integrante del grupo de subléxicos que conforman su corpus poético. Asimismo, se describe el campo semántico deportivo presente en dicho corpus.
The effects of ammonium loading rates and salinity on ammonium treatment of wastewater from super-intensive shrimp farming
Authors: Tran Manh Hai  , Nguyen Thanh Tung  , Nguyen Trieu Duong  , Nguyen Cam Tu  , Nguyen Truong Quan  , Nguyen Hoai Chau
Published: December 2023

Treatment of wastewater from super-intensive shrimp farming (SISF) for discharge or recirculation purposes is currently attracting the attention of managers and researchers. The fixed bed biofilm reactor (FBBR) has been successfully used for biological treatment of drinking water as well as for wastewater treatment in aquaculture farm. Ammonium and salinity are important factors affecting the efficiency of pollutants treatment. This paper presents the results of research on ammonium treatment in super-intensive shrimp wastewater by aerobic microbiological process using FBBRs. The results showed that at ammonium loading rates of 0.014; 0.028; 0.049 and 0.070 kg/m3/d, at salinity of 10‰, the ammonium removal efficiencies  were 98 - 99; 97.7 - 98.8; 96.8 – 98.7 and 95.7 – 98.0 percent respectively (ammonium concentrations in effluent were 0.05 – 0.1; 0.12 – 0.23; 0.23 – 0.56 and 0.51 – 1.07 mgN/l, respectively), at salinity of 15‰, the ammonium removal efficiencies  were 95.8-96.0, 94.5-92.0, 93.1-92.3 and 66.8-68.8 percent respectively  (ammonium in effluent were 0.20 – 0.21; 0.55 – 0.8; 1.20 – 1.35 and 7.8 – 8.3 mgN/l, respectively), at salinity of 20‰, the ammonium removal efficiencies were 92.0-96.0, 87.0-89.0, 69.1-70.9 and 59.6-66.0 percent respectively (ammonium in effluent were 0.2 – 0.4; 1.1 – 1.3; 5.1 – 5.4 and 8.5 – 10.1 mgN/l, respectively). This result showed that the influence of ammonium loading and salinity on ammonium treatment efficiency was very significant.
Heterotrophic nitrifying bacteria from activated sludge in DHS reactor for ammonium removal of natural rubber processing wastewater treatment
Authors: Minh Duc Tran , Thi Thanh Thuy Phan , Thi Huyen Nguyen , Huong Nguyen Lan
Published: December 2023

Two heterotrophic nitrifying bacterial strains, D2 and D7 were isolated from an activated sludge of sponges in a laboratory-scale downflow hanging sponge reactor. Both strains exhibited efficient ammonium removal ability over a wide range of ammonium loads. At the initial concentration of 100 mg/L, NH4+-N was completely degraded within 20 h by both strains. When the initial concentration was increased to 200 mg/L, the NH4+-N removal efficiency was 99.6 % within 20 h by the strain D2 and 61.3 % by the strain D7. In natural rubber processing wastewater, the ammonium removal efficiencies of strain D2 and D7 were 38 % and 99 % with the initial N-NH4+ concentration of 280 and 380 mg/L after 88 h, respectively. The 16S rRNA gene sequence of D2 and D7 showed the highest similarity to the Pseudomonas aeruginosa and Glutamicibacter nicotianae, respectively. This is the first report to demonstrate the ability to remove ammonium in NRPW by ​heterotrophic nitrifying bacteria isolated from activated sludge in DHS reactor.
High gravity enzymatic hydrolysis of non–gelatinized starch from black - purple rice
Authors: Huong Do Thi Thanh  , Thanh Nguyen Tien
Published: December 2023

Thanks to novel recombinant starch degrading enzymes which can directly hydrolyze raw starch at ambient temperature, the technology of hydrolysis of uncooked starch has recently been developed andproven to be effective. In combination with high substrate concentration (high gravity) approach, this technology not only saves the thermal energy for starch gelatinization but also reduces the impact of heat on valuable components in starch–containing raw materials. Black–purple rice is a specialty of Northwest Viet Nam, which contains high level of anthocyanin, a biologically active ingredient. In this study, commercial enzymes were applied to hydrolyze non–gelatinized black–purple rice to obtain anthocyanin–containing sugar solution. Factors affecting the starch conversion such as enzyme/substrate ratio, hydrolysis duration, temperature, and the presence of supporting enzymes in the hydrolysis process were investigated. The results showed that in the presence of Stargen 002, Viscozyme L, and Cellulast 1.5 L, more than 86 % of starch in a total of 320 g/L black-purple rice were converted into glucose after 72 hours at 50 °C. From black-purple rice, two products were received, including a glucose–rich hydrolysate (245.92 g/L) containing anthocyanin (30 mg/L) and a solid by–product rich in protein, which were very potential for food application.
Antioxidant, angiotensin converting enzyme inhibitory and anthelmintic activities of bark essential oil of Cinnamomum bejolghota (Buch.-Ham.) Sweet from North East India
Authors: Gogoi Barnali , Tamuli Kashyap J. , Saikia Snigdha , Lhouvum Neipihoi , Bordoloi Manobjyoti , Sarma Hemanta K.
Published: December 2023

Cinnamomum bejolghota (Buch.-Ham.) Sweetisa traditional anthelmintic and cardiotonic medicinal plant. The essential oil extracted from the bark of C. bejolghota was characterized by gas chromatography-mass spectrometry and 28 constituents were identified. Monoterpenoids were found to be dominating chemical constituents with α-terpineol (18.57 %) as the major component of the essential oil. The antioxidant activity of the essential oil was evaluated by DPPH radical, β-carotene bleaching and reducing power assay methods. The essential oil showed in-vitro dose-response hindering activity against angiotensin-converting enzyme with an IC50 value of 33.43 ± 0.46 µg/mL.The essential oil also exhibited potent anthelmintic property in-vitro against Caenorhabditis elegans with an ED50value of 80.53 ± 3.57 µg/mLin adult mortality assay. The inhibitory activity of essential oil against larval development assay showed an ED50value of 72.40 ± 2.68 µg/mL against C. elegans larva. Further, the egg hatching assay using C. eleganseggs demonstrated an ED50 value of 68.27 ± 3.51 µg/mL with this essential oil. Thus, the ethnomedicinal claim has been validated for the bark essential oil, which provides an excellent scope for the development of the C. bejolghota bark essential oil as novel herbal antihypertensive and anthelmintic agents.
A study on mechanical properties of 1H-type crystalline nickel ditelluride
Authors: Nguyen Danh Truong  , Nguyen Van Quynh
Published: December 2023

We used the molecular dynamic finite element method with Stillinger-Weber potential to study the mechanical behavior of monolayer 1H-type nickel ditelluride (1H-NiTe2) sheets under uniaxial tension. As the size of the pristine 1H-NiTe2 sheet increases, the Young’s modulus in the armchair direction increases by 6.2 %, while that in the zigzag one decreases by 6.0 %. Both tend to be size-independent in larger sheets and approach the same value at around 54 N/m. The ultimate stress in the armchair direction remains almost unchanged but that in the zigzag one reduces by about 9.5 % as the size inclines. Besides the influence of size, our results show that single vacancy defects strongly affect the ultimate stress and strain while having no effect on Young’s modulus and Poisson’s ratio. When a Te atom is missing at the sheet’s center, the ultimate stress in the armchair direction is reduced by 11.7 %, while a decrease of 16.0 % is caused by a Ni atom vacancy
Polycyclic Aromatic Hydrocarbons (PAHs) in paddy soil around Nam Son landfill area, Ha Noi, Viet Nam
Authors: Nguyen Thuy Ngoc  , Truong Thi Kim  , Nguyen Thi Quynh  , Phung Thi Vi  , Pham Hung Viet  , Duong Hong Anh
Published: December 2023

The paddy soils were collected in the rice growing fields and the uncultivated lands around the Nam Son domestic waste landfill in Hanoi. The average concentration of 16 US EPA priority PAHs in dry soil was 61.61 ng/g, with a range of 22.15-115.1 ng/g. The higher levels of PAHs in soil samples were observed in cultivated paddy fields near the landfill in comparison with the fields far from the landfill. On the other hand, there was no difference in PAHs levels in cultivated paddy fields near the landfill and along the irrigation water canal. Concentrations of 16 PAHs in paddy soils decreased in the order:  5 rings > 3 rings > 4 rings > 2 rings > 6 rings in this area. The PAH isomeric diagnostic ratios including Fluth/(Fluth+Pyr) ratio (Ave 0.43, a range of 0.17-0.61), BaA/(BaA+Chr) ratio (Ave 0.51, a range of 0.26-0.63), IcdP/(IcdP+BghiP) ratio (Ave 0.71, a range of 0.51-0.90) indicated that the potential main sources emitted PAHs in paddy soils from pyrogenic biomass combustion and coal burning. Compared with the risk threshold causing adverse impacts on the ecological environment from different countries in the world, concentrations of PAHs in the soil surrounding the Nam Son landfill area were still below the affected limit. However, environmental quality around the landfill area still needs to be regularly monitored to take timely measures to protect the environment in this area.
Educação Física no Ensino Médio Integrado dos Institutos Federais
Authors: Dos Santos Monteiro Jorge Corrêa Cynthia Roberta , Lima Andreza Maria
Published: December 2023

Neste artigo, analisamos a produção científica sobre a Educação Física Escolar (EFE) no Ensino Médio Integrado (EMI) dos Institutos Federais (IFs) na Pós-Graduação brasileira no período de 2017-2022. A pesquisa é qualitativa do tipo “Estado da Arte”. Para o levantamento dos trabalhos, utilizamos a plataforma Sucupira da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior e o sítio do Observatório do Programa de Pós-Graduação em Educação Profissional e Tecnológica (ProfEPT). Os descritores utilizados em ambas as plataformas foram: “Educação Física” e “Ensino Médio Integrado”. O critério de seleção dos trabalhos foi apresentar no título dos referidos descritores. Os trabalhos localizados foram lidos na íntegra. Para a análise, utilizamos a Técnica de Análise de Conteúdo Categorial Temática. Localizamos dez dissertações e duas teses. Das dez dissertações, sete foram desenvolvidas em mestrados profissionais. Os resultados apresentados nos trabalhos evidenciaram as necessidades e os desafios que precisam ser superados pela EFE como componente curricular do EMI nos IFs.  As pesquisas mostraram que, mesmo submetidos ao projeto do EMI dos IFs, ainda há hegemonia de projetos educacionais vinculados aos aspectos tradicionais da EFE.
DEVELOPMENT OF HIGHLY EFFICIENT TECHNOLOGICAL EQUIPMENT
Authors: Petrov V. , Pozner S.
Published: December 2023

The article discusses the problems associated with processing buckwheat on roller deck machines and reducing the amount of crushed kernel. Recently, there has been a tendency to increase the number of processed fractions of buckwheat grain, which significantly improves the quality of the output product. At the same time, this requires more precise adjustment to the working gaps and obtaining the correct shape of the working area (crescent-shaped when processing buckwheat) between the abrasive roller and the deck. The designs of roller deck machines used in the cereal industry and their installation mechanisms are analyzed. The mechanisms used for installing the deck on rolling deck machines do not allow one to accurately set the shape of the working gap and its dimensions. A more advanced mechanism for removing the deck from the abrasive roller and a mechanism for installing the deck on a wedge shape between the deck and the abrasive roller (usually used when processing millet or sorghum) have been proposed. The calculations of working gaps confirm the correct choice of geometric parameters of the abrasive roller, deck and installation mechanisms. The dependences of the minimum working gap on the magnitude of the parallel movement of the deck are determined. The dependences of the difference in working gaps between the deck and the abrasive roller when changing the structural height of the deck were also found. It is shown that asthe deck height is reduced by half, the difference between the maximum working gap and the minimum decreases by four times. This significantly affects the shape of the processing zone and the working dimensions in the active zones of buckwheat peeling. Reducing the deck height under production conditions leads to an increase in the amount of broken grain, due to an increase in the number of grains passes through the hulling machines. Based on the obtained calculation data, the roller deck machine was modernized, and in fact, a new mdel was developed in which the process flow is stabilized, the conditions for feeding grain into the working area are improved, and the working gaps are adjusted optimally in two active zones of buckwheat grain processing. The design of the roller deck machine allows you to select the husks from the kernel and send them to waste bins.
STUDY OF GRAIN THERMOMETRY DURING STORAGE
Authors: Sokolovskaya O. , Valevskaya L.
Published: December 2023

Grain thermometry is a process of measuring the temperature of grain masses during their storage. Key aspects that emphasize the importance of temperature control to ensure quality preservation: Prevention of self-ignition: prevention of fungal and bacterial growth, maintenance of moisture stability, reduction of nutrient loss, preservation of color and flavor, minimization of insect and pest growth. Overall, temperature control in grain storage is an important strategy for maintaining product quality, reducing losses, and ensuring storage safety. Modern monitoring and automation technologies allow for effective temperature control in storage facilities. The temperature of the grain in the storage can depend on a number of weather conditions and factors. Key factors that can affect grain temperature: air temperature, air humidity, solar heat, technical equipment of storage, natural conditions of grain, day and night temperature fluctuations. The temperature of the air around the storage has a significant effect on the temperature of the grain. In winter, cold weather can lead to a decrease in the temperature of grain masses, while in summer, high temperature can contribute to its increase. Air humidity is also important. High humidity can lead to condensation of moisture in storage, which in turn can increase the temperature of the grain through chemical processes such as decomposition. Solar heat can directly or indirectly affect the grain temperature, especially if the storage is located under direct sunlight. Storage efficiency and technical equipment, such as ventilation and air conditioning systems, can affect the distribution and retention of heat in the storage. The grain itself can affect its temperature through chemical and biological processes such as respiration and heat generation. Day and night temperature fluctuations can contribute to the distribution of heat in the storage. We conducted a study of grain temperature changes during storage at an enterprise in the Odesa region and established the influence of various factors on grain temperature changes.
Restoration of Road Pavement Depending on the Degree of Destruction of the Road
Authors: Luzhytskyi O. F. , Kurhan M. B. , Husak M. A. , Ulanovskyi V. I.
Published: December 2023

Purpose. The main purpose of this work is to develop a methodology for road pavement restoration depending on the degree of road destruction. Methodology. The study is based on the recommendations of the information guide for designers and customers in the development of design solutions for the rehabilitation of public roads and a preliminary assessment of the damage caused by their destruction as a result of the armed aggression of the Russian Federation. To assess the condition of the road and determine the necessary pavement rehabilitation work, indices can be used that take into account different types of defects on the road. Comparison of different road surface options was performed using a «priority matrix». The total score for each type of pavement makes it possible to determine the most rational option. Findings. The study found that when choosing a method for organizing construction work on pavement rehabilitation, the availability of materials, technical equipment, and the timing of rehabilitation should be taken into account. The choice of pavement design and material depends on the degree of road destruction, which is determined by technical and economic indicators, taking into account the life cycle of the road. The cost of repair and maintenance over the life cycle of a pavement is a key aspect of infrastructure planning and management. Estimation of these costs helps to effectively allocate the budget, prioritize and rationally spend resources to maintain road quality. Originality. Methodological approaches to the establishment of the pavement structure by the volume and cost of materials with the adjustment of the decision made by operational indicators, taking into account the service life, resistance to traffic, wear resistance, noise, vibration and, ultimately, vehicle safety, are proposed. Practical value. The provided recommendations for road pavement rehabilitation, depending on the degree of destruction, will contribute to the adoption of effective design solutions and preliminary assessment of the damage caused by the destruction or damage to roads as a result of the armed aggression of the Russian Federation.
Substantiation of Geometric Parameters of a Variable Inertia Moment Pulley
Authors: Kuropiatnyk Olek. S. , Sharapov M. Y.
Published: December 2023

Purpose. The main purpose of our work is to substantiate the geometric parameters of a variable moment of inertia pulley, which can reduce the weight of a drive with such a pulley. Methodology. It was found that the masses of the pulley and support elements have the greatest influence on the weight of the drive, so we focused on the pulley. Improvement of the pulley design and determination of its rational geometric parameters were carried out in three stages. At the first stage, the size of the rim was reduced in accordance with the diameter of the rope. At the second stage, a multivariate calculation was performed for a pulley with spokes that expand toward the rim. Holes were made in the spokes to reduce the pulley weight. The fundamental difference of the pulley calculated at the third stage is the absence of holes in the spokes, which makes it possible to increase the rigidity of the structure. The control parameter was the angle of expansion of the spokes. The problem of establishing a rational value for this angle was solved using the SolidWorks computer program with the Simulation application, subject to the constraints on the safety factor (at least two) and the structural rigidity parameters (displacement along three coordinate axes and the resulting displacement at the level of the values for the base structure). Findings. It has been established that the weight optimization of a drive with a variable moment of inertia pulley is advisable to be carried out by reducing the masses of the pulley and supporting elements. The best design is that of a variable moment of inertia pulley that contains spokes (without holes) that expand toward the rim; the rational angle of expansion of the spokes is 25°. If a pulley with reasonable geometric parameters is used, the mass of the drive will decrease by 16% in the case of a 33 % reduction in the mass of the pulley itself compared to the mass of the basic design. Originality. A new design is proposed and rational parameters of the variable moment of inertia pulley are substantiated, which make it possible to reduce the mass of the drive with such a pulley. Practical value. The use of the pulley of this design will reduce the load on the electric motor during startup, as well as the load on the supporting structures.
Performance of the phase-change material (PCM) to reduce freeze–thaw effect in cementitious composites
Authors: Acikök Fatih , Ardoğa Mehmet Kemal , Şahmaran Mustafa
Published: December 2023

One of the contemporary approaches to reduce the damage to cementitious composite resulting from the freeze–thaw effect is the incorporation of phase-change materials (PCM). In this study, the composites were produced adding n-tetradecane, which is a microencapsulated organic PCM, at rates of 0, 2, 4, 6 and 8% of the cement weight. In two different simulations representing the climate conditions of the two distinct regions in Türkiye, its effect on restricting the temperature amplitudes that the composite experienced was determined. It was determined that the PCM, with a working range similar to the temperature range applied to the composite in simulation, was successful in reducing the temperature amplitudes, and the rate and type of the PCM should be chosen with care according to the climate conditions likely to be experienced by the composite when in use. In addition to PCM's thermal properties, its effects on the mechanical properties and consistency results were investigated.
A simplified numerical model for the temperature profile of early-age concrete
Authors: Zhong Aocheng , Sofi Massoud , Lumantarna Elisa , Zhou Zhiyuan , Mendis Priyan
Published: December 2023

The issue of early-age concrete cracking is challenging and relies on the state of concrete soon after it is placed in the formwork. The concrete state is a function of the strains associated with thermal and other dilatations and the level of in situ strength. Both strain and strength primarily require information on the temperature–time history of the concrete element. For larger elements, the thermal history varies significantly across the thickness and the concrete material itself acts as confinement for discrete elements. Due to complexity of this issue, designers currently rely on mock tests and/or finite-element (FE) modelling for structures that are deemed ‘important’. Both approaches are costly and time consuming. It is therefore important to have a robust yet simple model to estimate the temperature variation experienced by concrete elements. The proposed spreadsheet-based model presented in this paper aims to provide a rapid estimate of the temperature profiles within a hydrating concrete element. The model uses the concept of effective thickness and the revised heat compensation technique. It was validated based on the measured temperature development of a concrete block of rectangular section. The proposed model was also successfully compared with output from FE software (TNO Diana).
Time-depth dependent chloride diffusion coefficients of self-compacting concrete
Authors: Liu Dongyun , Wang Chao , Guo Tong , Gonzalez-Libreros Jaime , Ge Yuanfei , Tu Yongming , Elfgren Lennart , Sas Gabriel
Published: December 2023

Chloride attack severely impacts the performance of reinforced concrete. The total and free chloride ion concentrations (CICs) of self-compacting concrete (SCC) prepared with three supplementary cementitious materials (SCMs) - fly ash (FA), blast furnace slag (BS), and silica fume (SF) – were measured through the accelerated salt immersion tests. The apparent chloride diffusion coefficients (CDCs) at any exposure time and erosion depth were calculated using the Boltzmann-Matano method. The influence of the type and content of SCMs, the water-binder ratio (W/B), and the type of salt solution on CICs and CDCs were investigated. Both introducing SCMs and reducing W/B effectively reduced the CIC. The SCM that most effectively reduced CIC was SF, followed by BS and then FA. Free CICs were reduced to a greater degree than total CICs in FA and BS concrete, but the opposite was true for SF concrete. Presence of calcium chloride in salt solution increased total CICs while reducing free CICs. Apparent free CDC dropped over exposure time and initially increased with erosion depth but eventually stabilized. A model of apparent free CDC considering the time-depth dependence was created, which shows that time reduction factors of CDC is larger in SCM-containing SCC than in control SCC.
Les traductions des œuvres littéraires de langue française en Afrique du Sud
Authors: Ngadi Maïssa Laude
Published: December 2023

En reprenant le sujet d’étude des Nouveaux Cahiers de l’IFAS consacré au “dix ans (1994-2004) d’échanges littéraires entre l’Afrique du Sud et la France”, l’article analyse la stratégie et le rôle des traducteurs des littératures francophones en Afrique du Sud. En utilisant les outils de la sociologie de la traduction, je montre comment les œuvres d’auteurs francophones s’insèrent dans le circuit littéraire sud-africain tout en établissant une forme de continuité de la francophonie littéraire. Par le biais d’une enquête, j’établis une bibliographie de dix-sept œuvres traduites et, par des échanges avec les traducteurs et la consultation de divers types de sources documentaires, je précise le rôle des différents acteurs littéraires, culturels et politiques dans la production de ces traductions. Je constate que les traductions, réalisées principalement par des universitaires, sont publiées avec le soutien d’institutions françaises. Les œuvres traduites en anglais sont généralement liées à la contestation de l’hégémonie mondiale de cette langue; celles traduites principalement en afrikaans s’expliquent aussi par l’affirmation identitaire et linguistique des traducteurs. Ces derniers, souvent membres du corps académique, cherchent à témoigner de la présence française dans l’histoire de l’Afrique du Sud et confirment, par le choix des œuvres, la domination d’un canon littéraire européen. La retraduction est l’un des facteurs qui expliquent la continuité d’un canon historique occidental, tandis que le nombre limité de traductions des œuvres d’écrivains africains souligne également l’absence de traductions dans les langues continentales, bantoues, etc.
Diagnostic and therapeutical approaches to H3K27M-altered diffuse midline glioma in children: a review
Authors: Morgacheva D. A. , Sitovskaia D. A. , Dinikina Yu. V.
Published: December 2023

H3K27M-altered diffuse midline gliomas are the most devastating pediatric brain tumors. These tumors are characterized by lesion of central nervous system midline structures, diffuse infiltrative growth and fatal prognosis. The pathogenesis of H3K27M-altered diffuse midline glioma is based on unique epigenetic and genetic changes which are associated with histone 3 (H3) alterations. Clinical disease course usually is non-specific, that could hamper diagnosis establishment and defines high prevalence of disseminated tumor stages. Diagnostic approach includes neuroimaging, various laboratory and molecular methods, including high throughput sequencing, which allows finding potential targets for precise therapy. Despite the availability of anti-tumor technologies, including targeted therapy and immunotherapy, the standard of care for H3K27M-altered diffuse midline glioma is radiation therapy, which does not allow achieving long-term event-free survival. A dismal prognosis and absence of curative options for these tumors determine the necessity of new treatment methods search that could improve patients’ outcome. In this article we present current worldwide data of the diagnosis and treatment trends in H3K27M-altered diffuse midline glioma.
Diagnostic and therapeutic approaches for lymphoblastic lymphomas from progenitor cells in children and adolescents
Authors: Pavlova T. Yu. , Valiev T. T.
Published: December 2023

Lymphoblastic lymphomas (LBL) are the second most common subtype of non-Hodgkin’s lymphomas in children and adolescents, accounting for 25–35 % of all non-Hodgkin’s lymphomas cases. The majority of all lymphoblastic lymphomas (80–85 %) are T-lymphoblastic origin; 15–20 % origins from B-cell precursors, biphenotypic LBL are extremely rare. Currently, the overall and relapse-free survival of children and adolescents with LBL exceeds 80 %, uses of modern therapy programs. However, the survival rates of patients with recurrent or refractory LBL remain low – 10 %. Optimization of therapeutic approaches in LBL follows the path of clarifying clinical, morpho-immunological and molecular biological risk groups, modification of treatment programs using new drugs (including immunotherapy, inhibitors of multifunctional intracellular signaling pathways (NOTCH, PI3K/AKТ/mTOR, JAK/STAT and MAPK), affecting the cell cycle regulation), and also a reduction in immediate and long-term toxicity. This article presents modern approaches to the diagnosis of LBL, staging and choosing of a treatment method.