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Item Рекомендації щодо написання та захисту кваліфікаційних робіт : методичний посібник для здобувачів вищої освіти факультету природничих наук, спеціальність "Хімія"(Національний університет "Києво-Могилянська академія", 2026) Забава, Луція; Жалніна, Галина; Стрижак, Петро; Пивоваренко, Василь; Рудь, ІринаУ посібнику наведено основні вимоги до змісту і структури кваліфікаційної роботи, а також обов’язкові умови поетапної підготовки до її захисту перед екзаменаційною комісією згідно з нормативними документами НаУКМА. Видання також містить додатки зі зразками належного оформлення, настановами щодо точного й коректного вживання наукових термінів, наукового стилю викладу інформації. Методичний посібник рекомендовано здобувачам вищої освіти за ступенями бакалавра / магістра за спеціальністю Е3 "Хімія" в галузі знань Е "Природничі науки, математика та статистика" (102 "Хімія" в галузі знань 10 "Природничі науки").Item Методичні рекомендації студентам факультету природничих наук щодо написання та захисту курсових і кваліфікаційних робіт з хімії(Копі-Центр НаУКМА, 2005) Забава, Луція; Жалніна, Галина; Солодка, Лідія; Ісаєв, Сергій; Бутова, К.Методичні рекомендації та поради студентам факультету природничих наук щодо написання та захисту курсових і кваліфікаційних робіт з хімії.Item Методичні рекомендації з дисципліни "Загальна хімічна технологія" : для студентів факультету природничих наук, спеціальність "Хімія"(Національний університет "Києво-Могилянська академія", 2026) Забава, Луція; Носач, Вікторія; Бровко, Олександр; Павленко, Вадим; Вакулюк, ПолінаНавчально-методичний посібник рекомендовано для самостійної підготовки до лабораторно-практичних і лабораторних занять з дисципліни "Загальна хімічна технологія" для студентів/студенток факультету природничих наук за спеціальністю "Хімія". Посібник містить програму дисципліни, плани лекційних і лабораторно-практичних занять з дисципліни "Загальна хімічна технологія", приклади розв’язування типових задач і задачі для самостійного розв’язування, а також методичні рекомендації та інструкції для виконання лабораторних робіт – експериментальних досліджень, а також завдання для самостійної роботи студентів/студенток. Крім того наведено перелік питань для проміжного та підсумкового контролю і критерії оцінювання здобутих знань і набутих вмінь. Важливим і цікавим є тлумачний словничок наукових термінів, які часто вживаються в науці і техніці.Item Research on the Impact of War on Protected Areas of Southern Ukraine(2025) Horoshkova, Lidiіa; Menshov, Oleksandr; Korniichuk, Yuliia; Horoshkov, Stanislav; Holub, Oleksandr; Skrynchenko, KarinaPurpose. To conduct an integrated analysis of the dynamics and ecological consequences of wildfires on Biriuchyi Island (Azovo-Syvash National Nature Park) between 2014 and 2024 using satellite monitoring tools. The study aims to identify spatial and temporal patterns of fire occurrence, assess their impact on vegetation and fauna, and highlight the environmental threats exacerbated by the ongoing occupation and lack of fire management. Methods. The study utilized NASA FIRMS (MODIS and VIIRS sensors), Sentinel-2 data, Google Earth Engine, and weather archives (RP5) to detect and map fire anomalies. Temporal-spatial analysis was performed based on fire radiative power (FRP), thermal brightness, fire coordinates, and weather parameters. Multisource data were integrated to validate fire events, and Sentinel-based NDVI changes were analyzed to assess vegetation damage. Results.Two primary fire peaks were identified: June and August 2024. The highest FRP (35.15 MW) and temperature (367 K) were recorded on June 10. Fires exhibited clear diurnal patterns– higher intensity during the day and more detections at night. Vegetation loss and fire scars were confirmed via Sentinel imagery. Occupationrelated factors (lack of suppression, military activities) were linked to increased fire spread. Post-fire satellite data showed significant degradation of native vegetation and fragmentation of habitats for deer, amphibians, and migratory birds. Conclusions. The fires on Biriuchyi Island have caused severe disruption to ecosystems through soil erosion, vegetation loss, and trophic imbalance. Restoration requires urgent actions: wildlife population monitoring, reforestation with native species, erosion control, and regulation of ungulate density. The use of satellite tools proved essential for detecting small-scale fires and monitoring ecological dynamics in inaccessible territories. Without active intervention, cascading degradation is likely, including microclimatic shifts and invasion of alien species. A long-term management plan is needed to restore and protect this unique ecological area.Item Хітозан-колагенові плівки для вирощування нащадків мезенхімальних стовбурових клітин(2013) Білько, Денис; Загородько, О.; Антонюк, Наталія; Колесник, Ірина; Борбуляк, ІринаРозроблено методику отримання плівок на основі хітозан-колагенових комплексів, придатних для вирощування нащадків мезенхімальних стовбурових клітин. Отримані плівки мають задовільні механічні та оптичні характеристики, що уможливлює їх використання як біосумісних матриць для культивування адгезивно залежних клітин. Експерименти in vivo показали, що отримані мембрани резорбують у організмі протягом 40 діб.Item Hydrogen peroxide decomposition by nanocomposites halloysite nanotubes/cerium oxide(2025) Hrynko, A.; Brichka, A.; Bakalinska, O.; Kaleniuk, Н.; Kаrtel, М.A number of nanomaterials based on halloysite nanotubes (HNT) decorated with CeO2 were synthesized by the precipitation method of aqueous cerium nitrate at room temperature without stabilizers in the presence of HNT. The amount of nanoceria deposited in nanomaterials ranges from 0.99 to 19.15 % wt. Electron microscopy has shown that the size of CeO2 particles varies in the range of 2.6–17.5 nm. The cubic structure of cerium dioxide has been shown by X-ray diffraction analysis of the samples. The characteristics of the porous structure were determined based on low-temperature nitrogen adsorption/desorption isotherms. The specific surface area ranged from 31 to 54 m2/g. IR spectroscopy determined the type of interaction between the modifier and the matrix. The IUVS Ce4+/IUVS Ce3+ ratio in nanocomposites was estimated from UV-spectra of diffuse reflectance; it varied in the range of 0.25 to 2.55. The catalytic activity of the synthesized materials and halloysite nanotubes was determined by calculating the affinity constant from kinetic data of the model reaction of hydrogen peroxide decomposition in the pH range of 8.0 to 11.0 and compared to the catalase enzyme and commercial nanosized CeO2. The catalytic activity of pristine HNT decreased with increasing pH. We can assume that the activity of the synthesized nanocomposites at pH range 9.0–11.0 is determined by the presence and properties of a decorator – nanoceria. The pH dependence of the activity of the nanocomposites was shown to be extreme with the maximum in the pH range of 9.5–10.5. An extreme dependence of the activity on the content of the decorator with a maximum for the sample of 3.19 % wt. CeO2 was found. Recalculation of the catalytic capability of nanocomposites to 100 % of the content of the decorator in them makes it possible to analyze the factors that determine the activity of nanoceria. Under these conditions, the best catalytic activity demonstrates by sample HNT-1CeO2, which contains 0.99 % wt. of the modifier and has a ratio of Ce4+/Ce3+ 0.25. It was found that the activity of nanoceria in nanocomposites decreases with: increasing Ce4+/Ce3+ ratio, i.e. with decreasing the number of oxygen vacancies; with increasing cerium oxide content - due to aggregation of nanocrystallites; and with increasing particle diameter due to the reduction of the surface. The activation energy (Ea) of the reaction of hydrogen peroxide decomposition by the nanocomposites and pristine HNT in the temperature range of 20–40 °C at pH 10 was determined by kinetic data. The Ea for pristine HNT is 170 kJ/mol. It has been shown that the increasing content of nanoceria in nanocomposites leads to a decrease in the activation energy of the reaction of hydrogen peroxide decomposition from 154 kJ/mol for the material with the lowest modifier content to 112 kJ/mol for the nanocomposite with the highest amount of a modifier.Item Вплив різного розміру фракцій оксиду алюмінію на каталітичну активність нанокомпозитів ВОГ/AL у реакції гідрування етилену(2025) Носач, Вікторія; Бичко, І.У цьому дослідженні оцінено каталітичну активність ВОГ, нанесеного на оксид алюмінію, а також вплив гранулометричного складу носія на ефективність нанокомпозиту.Item Oleogels as a modern form of cosmetics(2025) Ohoreltseva, K.; Murlanova, Tetiana; Skopińska-Wiśniewska, J.Oleogels are considered a sustainable and innovative alternative to traditional cosmetic formulations due to their semi-solid structure, ability to entrap lipophilic components, and the absence of emulsifiers [1]. Plant oils such as sunflower, linseed, pumpkin seed, rapeseed, and hemp oils were selected based on their vitamin composition and physicochemical properties to create stable and functional oleogels using Elevance Smooth CS-110 in the concentration of 5-12 % as a gelator, to evaluate optimal texture and structural stability.Item Antibacterial properties of composite materials based on metal/metal-oxide nanoparticles, nanosilica and polylactid acid(2025) Bespalko, Oleksandr; Vakuliuk, Polina; Furtat, Iryna; Pryshchepa, Oleksandra; Kozakevych, Roman; Pomastowskі, PawełThe global rise in antimicrobial resistance necessitates the development of alternative materials with effective antibacterial properties. This study compares two classes of nanocomposites: silver nanoparticle (AgNP)- and zinc oxide (ZnO)-based systems, both immobilized on silica (SiO₂) and treated with polylactic acid (PLA) to enhance biocompatibility and biodegradability. AgNP-containing composites (SiO₂- Ag and SiO₂-Ag-PLA) exhibited potent, broad-spectrum antibacterial activity, particularly against Gram-negative E. coli and K. pneumoniae, though activity decreased when modified with PLA—likely due to reduced ion release and surface coverage interference.Item Synthesis of Tinidazole-Based Nanocomposites and Evaluation of Their Physicochemical Properties(2025) Avramenko, Viktoriia; Vakuliuk, Polina; Furtat, Iryna; Pryshchepa, Oleksandra; Melnykov, V.; Murlanova, Tetiana; Pomastowskі, Paweł; Smarsly, BerndThe aim of the study was to obtain NCs based on nanosilica capable of improving the properties of tinidazole and increasing the safety of its use.Item Antibacterial properties of silver-containing composite materials based on silica and polylactic acid(2025) Bespalko, Oleksandr; Vakuliuk, Polina; Furtat, Iryna; Pryshchepa, Oleksandra; Kozakevych, Roman; Pomastowskі, PawełThis study aimed to investigate composite materials containing silver nanoparticles (AgNPs) impregnated on silica (SiO2) and incorporated into a polylactic acid (PLA) matrix.Item Study of guanidine-containing oligomer for desinfectant application(2025) Hodlevskyi, H.; Hudyma, A.; Vakuliuk, Polina; Pryshchepa, Oleksandra; Furtat, Iryna; Vortman, Maryna; Fijalkowski, Pawel; Rafińska, K.; Lemeshko, Valentyna; Murlanova, Tetiana; Smarsly, Bernd; Pomastowskі, Paweł; Shevchenko, V.The purpose of this project is a creation of guanidine containing oligomer, that could be used as a disinfectant against multiresistant microorganisms.Item Physicochemical and antibacterial properties of ornidazole based nanocomposites for medical application(2025) Avramenko, Viktoriia; Vakuliuk, Polina; Furtat, Iryna; Pryshchepa, Oleksandra; Kozakevych, Roman; Demianenko, Eugeniy; Murlanova, Tetiana; Smarsly, Bernd; Pomastowskі, PawełThis study analyzed nanocomposites with ornidazole – an antimicrobial agent effective against anaerobic bacteria and protozoa.Item ZnO-Graphene oxide nanocomposite as a high-efficient photocatalyst for the methylene blue degradation(2025) Kozakevych, Roman; Sevostianov, S.; Popelianska, A.; Murlanova, Tetiana; Vakuliuk, Polina; Tertykh, ValentinThis work is devoted to the development of synthesis methods and the study of properties of ZnO-GO nanohybrid composites. Obtained materials were characterized by XRD, FTIR and tested in photodegradation of methylene blue under simulated ultraviolet light supplied by 26 W lamp at room temperature (Fig.).Item Effect of nanoceria calcination on the effective activation energy of the hydrogen peroxide decomposition reaction it catalysed(2025) Hrynko, A.; Brichka, A.; Bakalinska, Olha; Oranska, O.; Kaleniuk, Н.; Kartel, M.The aim of this work is the preparation of nanoceria samples; calcination it at different temperatures; characterization its properties; establishing the effect of nanoceria calcination on the effective activation energy of the hydrogen peroxide decomposition reaction which it catalysed.Item Sustainable membrane fabrication through polyelectrolyte complexation: a green chemistry approach(2025) Semenyshyn, K.; Sikach, Alina; Konovalova, ViktoriiaIn these study polyelectrolyte membranes membranes based on poly(sodium 4-styrenesulfonate) (PSS) and poly(diallyldimethylammonium chloride) (PDADMAC) were prepared from water solution. The membranes were formed on the support with 200 μm (02p) and 400 μm (04p) thickness of active layer.Item In vitro study of bioactivity of calcium sulfate doped with Сu, Ag(2025) Kusyak, A.; Shchehlov, O.; Chornyi, V.; Poniatovskyi, V.; Petranovska, A.; Oranska, O.; Ishchuk, M.; Antonyuk, Nataliia; Dubok, V.; Gorbyk, P.Herein, we report the preparation of samples of Calcium sulphate doped with Ag+ (0.25 – 1%) and Cu2+ (0.25 – 0.5%), studying their structural and antibacterial properties (gram-positive and gram-negative bacteria: Staphylococcus aureus, Enterocossus faecalis, Klebsiella pneumoniae, Pseudomonas aeruginosa from the DSMZ were used as test cultures), and transformation, upon contact with a model physiological environment (Kokubo's SBF).Item Synthesis and structural study of vanadium(IV) complexes immobilized on the surface of pyrogenic silica(2025) Maliuk, M.; Kozakevych, Roman; Trachevskyi, Viacheslav; Tertykh, Valentin; Golub, AlexanderThis work is dedicated to the synthesis of vanadyl (VO²⁺) coordination compounds, the most stable form of vanadium ions under normal conditions, with a series of monodentate O, N and more complex bidentate (N,O) donor ligands immobilized on nanosilica, and the determination of their structure.Item Nanocomposite preparation with analgesic effect based on highly dispersed silicon dioxide(2025) Maslov, D.; Golub, AlexanderThe aim of this work was to study the release kinetics of lidocaine hydrochloride from a nanocomposite system based on nano-SiO₂ and to evaluate the influence of different conditions on the release efficiency of the active component.Item Modelling kinetics of ciprofloxacin release from alginate-chitosan polyelectrolyte complexes(2025) Sikach, Alina; Konovalova, ViktoriiaIn this study, a controlled method was developed for preparing alginate-chitosan (AC) polyelectrolyte complexes (PECs) with the immobilized ciprofloxacin. Additionally, the introduction of sodium hyaluronate into the system for the formation of AC-hyaluronate (ACH) complexes was investigated to improve mechanical and biological characteristics.