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Item type:Наукова стаття, Information and measurement system for analyzing images of fundus tissue using computer-integrated technologies(2025-10-22) Povstyanoy, Oleksandr; Vynokurova, Olena; Denysiuk, Viktor; Lapchenko, Yuryi; Hrudetskij, RomanThe paper presents the results of research and development of a modern information and measurement system (IMS) designed for automated analysis of fundus images for the purpose of diagnosing and monitoring ophthalmic pathologies. The proposed system combines methods of digital medical image processing, artificial intelligence and computer vision, which allows ensuring high accuracy and objectivity of the diagnostic process. Particular attention is paid to the use of deep learning algorithms for the segmentation of anatomical structures of the retina and analysis of fluorescent images. A comprehensive method of photodynamic diagnostics and therapy has been developed, which is implemented based on a modified slit lamp with a laser illuminator. Effective methods of image registration and processing have been proposed, in particular their synchronization and spectral analysis, which allows for quantitative assessment of the state of tissues. The results of the study can be used in ophthalmological practice to increase the accuracy of early detection of pathologies, as well as in telemedicine and personalized medicine systems.Item type:Наукова стаття, Automation of Warehouse Parameters Calculation and Its Sketch Design(Cham: Springer, 2026-01-17) Povstianoi, Oleksandr; Valetskyi, Bohdan ; Zaleta, Olga; Redko, RostyslavWarehouses in enterprises are a key element in ensuring the stability of production activities, particularly in terms of efficient supply chain and production process management. Proper selection and accurate calculation of warehouse parameters help reduce storage costs, which is an important and relevant task. Therefore, the aim of this study is to analyze warehouse system parameters and develop a computer program for their automated calculation. The practical significance of this task is justified by the widespread practice of warehouse use in various industries and the necessity for their rational operation. Warehouse Calculator is the new software, which create a sketch of a warehouse with pallet racks according to the specified input and output parameters. Its main task is to generate a database of calculation results and to build a sketch for the warehouse design documentation. The program algorithm calculates the warehouse area, its geometric dimensions (length, width, and height), considering user-input values and sizes, which are described in this paper. It also includes the calculation of columns. When starting a new calculation, standardized data is displayed by default in all fields. These values can be adjusted based on the individual problem and modified at any stage of its solving.Item type:Наукова стаття, Using Plasma Electrolytic Oxidation Technologies in the Manufacture with Better Biodesign(Cham: Springer, 2026-01-17) Povstianoi, Oleksandr; Imbirovych, Natalya; Tkachuk, ValentinaA promising method for changing the surface state of metals and influencing product design is plasma electrolytic oxidation (PEO) as one of the innovative surface treatment methods. The PEO method allows for a wide range of surface modifications, either by strengthening it or by changing its structural and morphological state. In the field of biomedical materials science, the creation of new implant materials with biocompatible, bioactive properties and high osseointegration is particularly relevant. Titanium and zirconium alloys are characterized by an excellent combination of a complex of mechanical and chemical properties with inertness to a living organism, which is ensured by their ability to form a passive film on their sur-face. Such alloys are used in the field of implantology and for the manufacture of surgical instruments and implants. In order to increase osseointegration, the modification of the surface of such alloys with bioactive substances is posi-tive, as well as the influence in the direction of modifying its design, which includes increasing the roughness and porosity of the surface. In this work, the PEO method was used for surface treatment of titanium and zirconium alloys. Experimental studies have established the correlation of the influence of treatment modes, such as the composition of the electrolyte and the ratio of current densities on the roughness and porosity of plasma electrolytically oxi-dized coatings at their optimal thickness. The developed alkaline electrolytes were additionally saturated with such biocomponents as diatomite and hy-droxyapatite.Item type:Наукова стаття, Formation of Coatings on Titanium Alloys Saturated with Biocomponents by the PEO Method(Cham: Springer, 2025-02-14) Povstyanoy, Oleksandr; Imbirovych, Nataliia; Boiarska, Inna; Nykoliuk, TamaraIn the work, the influence of the composition of the electrolyte on the elec-trophysical parameters of the synthesis of coatings with increased biocom-patible properties was studied. It was established that under conditions of increased electrolyte concentration, the voltage at which the coating is syn-thesized decreases. This effect can be explained by the thermodynamic Gibbs conditions. According to these conditions, the system needs more energy when the medium contains more elements, which must also con-sume a certain amount of energy. The authors found that sodium salts in-crease the conductivity of the working environment. This effect affects the speed of the synthesis process and can reduce the cost of the energy re-serve of the system as a whole. Spectral analysis established that during the synthesis of a titanium alloy in an alkaline electrolyte, an equilibrium non-degenerate quasi-ideal plasma is realized in the discharge channel with a temperature of (1...1,1)×104 K and an electron density of (3,2...3,4)×1022 m-3. It is under these conditions that molecules dissociate into ions and interact with the components of the elec-trolyte, which leads to oxidation of the surface of valve metals and the formation of stable compounds with high biocompatible properties.Item type:Наукова стаття, Production and Surface Research of a New Material with the Addition of Diatomite for Potential Filtration Applications(Cham: Springer, 2025-07-12) Povstyanoy, Oleksandr; Imbirovych, Nataliia; Smetjukh, Bohdan; Karbovska, YuliiaThis work is dedicated to the research and study of the possibility of using Natural minerals such as Diatomaceous Earth (diatoms) for filtering various environments. The extraordinary progress and prospects of diatomaceous earth (DE) as a biomatrix material for creating porous materials are relevant and interesting. The unique structures of DE, including its mesoporosity and large surface area, have made it a key material for the filtration process. Its biotemplating ability can initiate the creation of highly efficient porous permeable materials. Its sufficient natural abundance and ecological properties are consistent with the increasing emphasis on sustainability in environmental solutions. Its complex structures and biotemplating capabilities will pave a compelling path in the future for the advancement of sustainable, highly efficient solutions for filtering environments, marking a significant step towards a more ecological and efficient future for humanity. This research paper explores the potential of DE as a bio-matrix material for creating a permeable material without delving into the complex filtration processes. Previous studies have shown that the use of Diatomaceous Earth with titanium powder in various proportions allows us to talk about the possibility of creating highly efficient porous permeable materials with branched porosity even for drinking water filtrationItem type:Наукова стаття, Anti-friction Products from Composite Materials Based on Lh15 Steel Powder(2024-07-06) Povstyanoy, Oleksandr; Halchuk, Tetiana; Polinkevych, Romаn; Redko, OlhaThe work considers the possibility of manufacturing and using sintered composite products from a metal component in the form of alloy steel powder ob-tained from grinding waste of bearing production. The research was carried out at op-timal pressing parameters of 400...800 MPa, sintering at 1200°C for 2 hours from the moment of setting the specified temperature. The results of the first systematic studies of the strength and tribotechnical properties of sintered materials based on LH15 steel powder obtained from grinding slurries with copper and graphite additives are pre-sented. It was established that the tribotechnical characteristics of sintered products under conditions of medium loads mainly depend on the hardness of the composition. It has been experimentally verified that the high wear resistance and friction coefficient, which is on average 0.09, has a composition with a content of 2% graphite and 4% copper at a sliding speed of 5 m/s and a pressure of 10 MPa. It has been experimental-ly confirmed that the increase in the linear dependence of stress on deformation, in particular, when the strain is 8%, the stress is 1200...1400 MPa. This makes it possible to predict higher operational properties of products made from material of this com-position. The resulting anti-friction products have a significantly lower cost and a higher material utilization ratio compared to traditional materials.