bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical analysis of molecular vibration under Lennard-Jones potential
Authors: Supardi  , Nugroho K A 
Published: December 2024

Abstract
This research aims to simulate the physical system of molecular vibrations under the influence of the Lennard-Jones potential. The Lennard-Jones potential is a mathematical model that describes the interaction between two uncharged atoms or molecules. This potential considers electrostatic repulsion and Van der Waals attraction between particles. It can be applied to study the thermal, elastic, and dynamic properties of interacting particle systems. There are two numerical methods used in this study, namely the Runge-Kutta method used to determine the position and velocity of the particles and the Secant method used to determine the energy state of the system. The results show that the potential depth parameter γ determines the number of bound energy states and the particle state energy magnitude. An illustration of the particle trajectory that illustrates the conservation of the potential and kinetic energy of the particle is also obtained.
Characterization of porosity and permeability in Nata De Soya porous membranes with composition modifications
Authors: Qodriyah N L , Aji M P , Bintari S H , Masturi  
Published: December 2024

Abstract
Nata de soya is a fermentation product derived from tofu and tempeh waste, known for its strong and stable cellulose structure. This study focuses on characterizing the porosity and permeability of nata de soya porous membranes modified with various raw material compositions. Porosity and permeability were characterized using Scanning Electron Microscopy (SEM) and fluid flow measurements. The results indicate that the composition of tofu and tempeh waste mixture (Composition A) produced membranes with the highest porosity (51%) and permeability (1.70191 × 10−9 m2). Membranes from tofu waste (Composition B) exhibited 47% porosity and permeability of 1.59554 × 10−9 m2, while membranes from tempeh waste (Composition C) showed 43% porosity and permeability of 1.27643 × 10−9 m2. This research demonstrates that variations in raw material composition and modification processes influence membranes’ porosity and permeability characteristics, contributing significantly to the development of biomass-based materials for filtration applications and supporting efforts toward more sustainable management of organic waste.
Methane degassing within Ukraine according to satellite data
Authors: Apostolov A A , Ya Khodorovskyi A , Yelistratova L A , Tymchyshyn M A 
Published: December 2024

Abstract
The article substantiates the concept of degassing the Earth using the example of methane, a gas component of the fluid regime of the lithosphere. According to the analysis of observations from the Sentinel-5P satellite over the territory of Ukraine for the period 2019-2022, data on the distribution of methane (CH4 ) in the atmosphere were obtained using the Google Earth Engine (GEE) platform, and a corresponding map was compiled. The distribution of methane content within the main tectonic structures of Ukraine is very complex and is probably not related to the specifics of their development. It has been established that methane is present everywhere in the atmosphere of Ukraine but in different amounts. The relationship between the content of methane in the atmosphere and the content of hydrocarbons within 12 known oil and gas-bearing areas of the Dnieper-Donets Depression (DDD) was established. Two aggregates are distinguished: areas with the largest reserves of hydrocarbons and oil and gas-bearing areas with low reserves of hydrocarbons, which are characterized by a significant range of changes in the content of methane in the atmosphere. This indicates the connection of methane content in the atmosphere with hydrocarbon reserves in oil and gas-bearing areas. That is, the process of degassing is taking place and it can be studied according to the remote sensing (RS) data.
Accumulation of heavy metals by different representatives of biota in the operation zone of the Prydniprovska thermal power plant
Authors: Kulbachko Y L , Boroday Ye S , Lykholat T Y , Lykholat O A , Kvitko M O , Marenkov O M , Yevtushenko E O , Lykholat Y V 
Published: December 2024

Abstract
Among the consequences of technoecogenic stress caused by the activity of industrial and energy complexes, dust and gas emissions, containing toxic to representatives of biota substances, including heavy metals, have a particularly negative impact on ecosystems. Different types of organisms have different mechanisms to absorb and accumulate heavy metals, that can be used for ecotoxicological studies. The peculiarities of the accumulation of heavy metals in various components of the ecosystem such as soil – plant – animal in the area of operation of the thermal power plant (TPP) of the Dnipro region were investigated. Test samples of soil, sod-forming grasses, and soil-litter invertebrates were collected from artificial plantations of Robinia pseudoacacia L., located in the immediate vicinity of the Prydniprovska TPP in the city of Dnipro, and control samples – at a distance of 30-40 km from the TPP. Determination of the content of heavy metals, which are priority pollutants for the Dnipro region, was carried out by the method of atomic adsorption spectrophotometry according to the standard method. The invertebrates accumulate Fe and Mn in the largest amount at all test sites. From all functional groups, only representatives of saprophages perform the functions of heavy metal accumulators (Fe, Cu, Cd, Mn), contributing to the intensification of the biological cycle (Ni) and the purification of trophic chains (Zn, Pb). The features of the accumulation of heavy metals by the main sod-forming cereals depending on the contamination level in the soil under the influence of the Prydniprovska TPP have been established. The concentration of heavy metals in both the above-ground mass and the underground part of the plants was determined in the experimental and control plots. The different intensity in the elements accumulation by the vegetative organs of the experimental plant species was revealed. The obtained results can be used in bioindication to assess environmental pollution.
ML-ERV: A machine learning-based CO2 emissions model designed for rental vehicles
Authors: Yousfi A 
Published: December 2024

Abstract
On-road carbon dioxide (CO2 ) emissions from rental vehicles are very much affected by vehicle category, types of vehicle transmission, fuel type and traveled distance. In this paper, four machine learning models (decision trees, random forest, AdaBoost and XGBoost) were used to predict CO2 emissions from rental vehicles. The models were trained and tested on Carbookr’s bookings dataset. The results show that the traveled distance, the included mileage, the ACRISS code, the rental duration, the driver’s home country, the country where the driver works and the country where he pickups up the vehicle as well as the country where he returns the vehicle had clear impacts on the transient CO2 emission rates. There was a positive correlation between these features and CO2 emission rates. The findings also indicate that XGBoost achieves the best accuracy performance when compared to other machine learning algorithms in terms of the Root Mean Squared Error (RMSE), the Mean Absolute Error (MAE), the Mean Absolute Percentage Error (MAPE) and the Coefficient of Determination (R
2). The results show that the machine learning-based CO2 emission model ML-ERV trained using XGBoost algorithm outperforms the state-of-the-art CO2 emissions calculators.
The use of digital technologies in education in the context of sustainable development of society
Authors: Kramarenko T H , Kramarenko V M 
Published: December 2024

Abstract
One of Ukraine’s Sustainable Development Goals is to ensure inclusive and equitable quality education and to promote lifelong learning opportunities for all citizens. Therefore, it is important to develop the professional skills and pedagogical competence of teachers to prepare future generations to achieve the Sustainable Development Goals through education. In particular, through the digitalization of education. The purpose of this article is to highlight the state of use of digital technologies and innovative approaches by teachers of Kryvyi Rih district in the context of blended learning in the context of sustainable development of society. The problems of development and use of video materials and interactive tools, virtual simulations, workshops and laboratories in teaching are considered. The issue of using game technologies for learning is highlighted. The use of platforms for collaboration and exchange of views between students and the use of e-learning systems is analysed.
Improvement technique surveying observations of the displacement
Authors: Dolgikh O V , Dolgikh L V , Kremer O A 
Published: December 2024

Abstract
The purpose of the research is to increase the efficiency of work on monitoring deformation processes and shear in the areas of influence of mining activity. The research methodology is based on the analysis of instrumental observations of the objects negatively affected by mining activities. As a result of the research, special attention was focused on the use of innovative instruments for instrumental measurements and software processing the data. The scientific novelty of the obtained results consists in using a comprehensive modern digital and satellite methods for performing instrumental observations on profile line reps, which makes it possible to obtain a more complete feature of the deformation process and information about the current state of the ground surface and other objects located in the research area, which makes it possible to increase the accuracy of the prediction for a certain period of time and quickly verify the dimensions of the displacement zone and its spreading limits. The practical significance of the research is that its results will contribute to ensuring the safe operation of the deposit and the development of more effective measures to protect the environment and mitigate the negative impact of mining activities on the area and buildings located in the zone of their influence. The studies have shown that the automated method of comparing point clouds to sinkhole areas obtained from two digital models can produce significant errors. These errors, when determining the spatial position of points, can reach 10-15 meters. In the case of a “manual” set of picket points, the errors do not exceed 0.1-0.2 m, but the time of data processing increases significantly, i.e., increasing the accuracy of determining the desired values requires a decrease in the efficiency of this process.
Development of a method for estimating the carbon footprint when transporting grain by road
Authors: Matsiuk V , Yanovska V , Matviienko H , Parfentieva O , Ilchenko N 
Published: December 2024

Abstract
The article presents the results of a study of the process of transporting grain from the territory of Ukraine in global supply chains. In order to study the negative impact of the transport sector, a simulation model of the existing logistics system was developed, namely, using only road transport. The model was developed using Java SE technology based on the agent-based and discrete-event principles. As a result of a series of experiments based on the grain supply chain through the Mykolaiv commercial port, it was found that the actual CO2 emission rates per unit of transport work are 12.8 kg per tonne and 32.9 kg per 1000 tonne-km.
A flight situation advisory system for uninterrupted and efficient air transportation
Authors: Kucherov D , Dolgikh S , Myroshnychenko I , Poshyvailo O , Kravchenko O 
Published: December 2024

Abstract
Safe and reliable air transportation plays a significant role in modern society by facilitating connection, communication, and economic activity, which has been growing steadily for recent decades. Ensuring a safe, reliable, and efficient operation of the air transportation network is a central challenge in assuring smooth progress in modern and future aviation. This research addresses the problem of human-caused issues in aerial transportation by proposing, substantiating, validating, and designing automated flight situation advisory systems that can provide critical input to the crew in the cases of unexpected and challenging flight situations. It was shown that a proper design and use of these systems could be instrumental in managing flight situations and could eliminate or mitigate a significant fraction of human-cause faults and emergencies. It would expected that such an advisory system can become a proactive and cost-effective tool to improve safety and reliability in the operation of air traffic networks of today and tomorrow. The study’s main result is to assess the importance of factors influencing the development of recommendations by the advisory system.
Sustainable development of the Pirnovo community in the Kyiv region: problems and perspectives
Authors: Mykhidenko M O , Shebek N M , Timokhin V O , Olkhovets O D 
Published: December 2024

Abstract
Currently, Ukrainian rural communities experience the devastating impact of war, which increases the difficulties of economic and social growth in sparsely urbanized areas. The military escalation has put on standby the processes of social infrastructure modernization, creation of peaceful jobs, expansion of local production and the development of local culture, forcing Ukrainians to focus on such problems, as increasing the stability of settlements, preserving the lives and health of their residents, and saving critical infrastructure. At the same time, preparing for the post-war reconstruction of the country, experts have to think about ways to develop recovery strategies and about further sustainable development of all regions of Ukraine. This study presents an analysis of the urban-planning and environmental challenges faced by the Pirnovo community on its way towards a sustainable future and offers ways of transforming the architectural environment in order to improve the quality of life of the local population and preserve the ecological and cultural heritage. The research methodology includes analysis of current community issues and unrealized opportunities, spatial modeling of comprehensive territorial development, development of proposals for gentrification of existing settlements, improvement of the environment through innovative technologies. The proposed comprehensive development plan allows for considering alternative options for utilizing the recreational potential of the territory, methods of modernizing the cultural and household services system for the population, and ways to achieve environmental balance. Our version of the general plan for Pirnovo focuses on necessary land management changes, development of social infrastructure, and improvement of the quality of living environment without destruction of the natural. The detailed plan of the central part of Pirnovo demonstrates possible approaches to reconstruction and creation of modern public spaces. The research offers new ways to address existing problems in specific areas that can help other settlements and rural territorial communities achieve sustainable development.
Assessment of changes in the structure of the forest ecosystems for example sanitary woody plantations in the Steppe Dnipro
Authors: Kvitko M O , Lykholat T Y , Lykholat O A , Marenkov O M , Lykholat Y V 
Published: December 2024

Abstract
The main acceleration of climatic changes is considered to be the main consequences of existing anthropogenic influences and transformations in the wood ecosystems of the Steppe Dnipro industrial areas. Now, the preparation of science-based programs for the restoration and development of artificial tree plantations, which can increase the stability and diversity of forest ecosystems in the steppe zone under these conditions, is very important. However, artificial tree and shrub plantations are formed according to certain natural laws. It is necessary and urgent to study the current state of phytodiversity to ensure the effective protection of biodiversity, and implement nature conservation management on this basis, including the expansion of the areas of nature reserves. The purpose of this research work was to assess changes in the structure of the Dnipro Steppe woody ecosystems using the example of dust-protection and water-protection sanitary plantations. Modern biodiversity, formed in the natural ecotopes of the Steppe Dnipro region of Ukraine, is quite specific, primarily due to the combination of natural and anthropogenic landscapes in these territories. Depending on the ecological location territory conditions, taking into account the vitality indicators of the plantations, the further development of woody ecosystems according to the vectors of progress or regression is possible. Hence, there is an urgent need to study the biometric indicators of the Kryvyi Rih district’s woody ecosystems under different growth conditions. The work carried out will become the basis for the development of the main directions of preservation and reproduction of phytodiversity in the woody ecosystems of the territory, which will make it possible to plan the necessary vectors for the protection and restoration of biological diversity of artificial trees and shrub plantations of the Kryvyi Rih districts. identifying the features of local guarantee of rare species from various protection lists. It will also contribute to the provision of ecosystem services by natural, spontaneous and artificial woody plantations of the Middle Dnipro region. The received recommendations form the basis of complex measures to preserve and restore the stable state of artificial tree plantations of the Kryvyi Rih district, located on the steep slopes of mine dumps and rafter-beam systems near the rivers and water reservoirs of the Dnipro Steppe.
Prerequisites for improving crop irrigation regimes on the basis of resource optimization
Authors: Prykhodko N V , Rokochynskiy A M , Volk P P 
Published: December 2024

Abstract
The article discusses the prerequisites for improving crop irrigation regimes on the basis of resource optimization. The current approaches to solving the problem of water shortages in irrigation are considered. The results of a machine experiment that reproduces research on the influence of the amount of water resource consumption on the yield of a cultivated crop in relation to the timing of irrigation are given. For the implementation of the machine experiment, a set of optimization, economic, mathematical and forecasting-simulation models was used, including a model of climatic conditions, a model of water regime and water regulation technologies, as well as a model of crop yields on reclaimed land for long-term forecasting. It has been experimentally shown that the impact of water resource shortages is weakened in the second half of the growing season, when crop yield losses are significantly lower than at the beginning of the growing season under similar conditions of water resource consumption. This fact provides prospects for the optimization of crop irrigation regimes as a component of resource optimization. The obtained results and the availability of a set of optimization, economic, mathematical and forecasting-simulation models create prerequisites for improving crop irrigation regimes on the basis of resource optimization.
The influence of deformation degree on efficiency of thin sheet cold rolling
Authors: Chubenko V A , Yarosh T P , Khinotska A A , Skidin I E , Gubin G V 
Published: December 2024

Abstract
The objective of this research is to improve the efficiency of cold rolling of thin steel sheets with a thickness of 1.5 mm by determining efficient deformation degree. Low-carbon steel 20 was used for the research, and reduction patterns under conditions of cold rolling were determined. While maintaining a constant final sheet thickness of 1.5 mm, the deformation degree was observed to vary based on the initial thickness of the semi-finished rolled product. Key parameters, such as the initial temperature and rolling speed, were adjusted at 200°C and 1 m/s, respectively. The strip width was maintained as a constant, and a friction coefficient of 0.01 was adopted. The research delved into the deformation zone formed during longitudinal sheet rolling, defining its coefficients and essential parameters. Additionally, factors influencing the quality of the resulting sheet were identified. The research also explored the influence of the deformation degree on metal stress during the cold rolling process of thin sheets. This involved an analysis of yield strength, metal flow, and overall strength. Furthermore, the study established the rolling force and its variations with changing deformation degrees. An integral aspect of the study was the examination of the impact of the deformation degree on the process productivity of cold-rolled thin sheets. Through comprehensive analysis, a rational deformation degree was pinpointed, ensuring the production of a high-quality product with efficient strength and plasticity. This optimized degree also minimizes the required deformation forces and rolling torques, contributing to maximum process productivity.
Melamine-doped TiO2 as a perspective photocatalyst for hydrogen evolution
Authors: Manuilov E V , Khalyavka T O , Shymanovska V V , Gavrilko T A , Korzhak G V , Shcherban N D 
Published: December 2024

Abstract
The photocatalysts based on titanium dioxide (TiO2) doped with melamine were synthesized. The samples of pure and modified TiO2 were analyzed using X-ray diffraction (XRD) analysis, Brunauer-Emmett-Teller (BET) surface area analysis, and room temperature FT-IR, Raman, and UV-Vis diffuse reflectance spectroscopy. It was established that modifying TiO2 with melamine leads to a decrease in the crystallite sizes and an increase in the lattice parameters and molecular unit volume. The stoichiometry of modified TiO2 worsened due to the appearance of additional vacancies of oxygen in the doped samples. The photocatalytic activity of the prepared catalysts in the reaction of hydrogen production from water under light illumination was studied. The melamine-doped TiO2 samples showed more than two times higher activity than pure titanium dioxide.
Technology of castings restoration by casting alloyed thermite melt onto the surface
Authors: Saithareiev L N , Skidin I E , Ponomarenko O I , Vodennikova O S , Vodennikov S A 
Published: December 2024

Abstract
The study describes the process of forming a functional layer of thermite melts on the surface of castings. The chemical composition of thermite mixtures, technological parameters of various processes of surface alloying of castings, structure and mechanical properties of alloys, and operational properties of castings were examined at various stages of the development of energy-efficient technology for creating a functional surface of a given thickness. The described technology of surface alloying of castings by obtaining functional layers from thermite melts refers to the aluminium-thermite method of obtaining a melt with its subsequent casting on the surface of castings to form a wear-resistant functional layer or direct casting of castings. Characteristic features of the technology are: the use of cheaper internal chemical energy of the interaction of reagents to produce melts, instead of external electrical energy; simplicity and cheapness of the equipment used; obtaining various grades of alloys; high speed of processes in metal synthesis; high productivity of the process of manufacturing or repairing castings.