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Item type:Časopis, listelement.badge.peer-reviewedpeer-reviewed, listelement.badge.statuspublished Access status: Omezený přístup , 2025/5 Ošetrovateľstvo a pôrodná asistencia(Slovenská komora sestier a pôrodných asistentiek, 2025)Item type:Článek, listelement.badge.peer-reviewedpeer-reviewed, listelement.badge.statuspublished Access status: open access , Hydrogen Refueling Station Selection Using the AROMAN Method: A Case Study in the Pardubice Region(Elsevier B.V., 2025) Bošković, Sara; Švadlenka, Libor; Dobrodolac, Momčilo; Jovčić, Stefan; Chatterjee, Prasenjit; Bauer, LiborHydrogen-powered vehicles are emerging as a promising mode of transportation, aligned with the principles of sustainable societal development. Establishing hydrogen refueling stations is an ongoing endeavor, with an expected growth in the number of hydrogen-powered vehicles soon. This paper addresses the challenge of selecting a hydrogen refueling station from a driver’s perspective. The proposed methodology is designed as a decision support tool for drivers and can be integrated, for example, as a background program within a mobile phone application. To assist drivers in selecting the most suitable hydrogen refueling station, a recently developed multi-criteria decision-making (MCDM) method known as the Alternative Ranking Order Method Accounting Two-Step Normalization (AROMAN) has been employed. Several criteria are considered in the decision-making process, including the driver’s distance to the station, travel time to the charger, expected wait time if the charger is occupied, and the number of available chargers at each station. The problem is addressed for the Pardubice Region in the Czech Republic to demonstrate the practicality of the proposed approach. The available alternatives for the driver’s choice include the hydrogen refueling stations in Pardubice, Chrudim, and Třemošnice. The results obtained from the proposed approach identify the Chrudim refueling station as the optimal solution in this specific case. Comparative analyses are conducted with other MCDM methods such as the Additive Ratio Assessment (ARAS) and Measurement of Alternatives and Ranking according to the Compromise Solution (MARCOS), demonstrating high confidence in the results.Item type:Publikace, Access status: open access , Růst krystalů a transportní děje v amorfních chalkogenidových materiálech(Univerzita Pardubice, 2025) Barták, Jaroslav; Liška, Marek; Šimon, Peter; Tichý, LadislavPředložená práce se zabývá studiem a popisem růstu krystalů v amorfních chalkogenidových materiálech připravených ve formě objemových skel a napařených tenkých vrstev. Studium je zaměřeno na vzájemný vztah mezi rychlostí růstu krystalů, viskozity a difúzí. Na základě nalezených poznatků jsou navrženy růstové modely a popis transportních jevů v daných systémech. V práci jsou ukázány přímé metody studia viskozity a difúze v površích amorfních materiálů. Souvislost mezi difúzním koeficientem a rychlostí růstu krystalů je pak ukázána na základě jak experimentálně změřených difúzních koeficientů, tak na datech získaných nepřímo.Item type:Publikace, Access status: open access , Polymeric bio-based nanodispersed admixtures for the production of hydrophobic Portland cement mortars(Frontiers Media, 2025) Ševčík, Radek; Kolář, Martin; Pokorný, Jaroslav; Zárybnická, Lucie; Honzíček, Jan; Machotová, JanaA current trend in the construction industry involves the development and employment of eco-friendly, durable, and sustainable materials. Numerous admixtures, including various polymers, are used to modify the properties of cement. Nonetheless, their effectiveness and environmental impacts are still a matter of discussion. In this context, this work focuses on the application of innovative vegetable oil-based polymeric nanodispersed admixtures, synthesized following green chemistry principles, such as using water as a solvent. The synthesized bio-based latex admixtures were incorporated with 30 wt.% of vegetable oil-based monomers derived from camelina, linseed, and rapeseed oils. The produced ordinary Portland cement fine-grained mortars, containing 0.1 wt.% of each bio-based latex admixture, were thoroughly examined using several instrumental methods, such as isothermal calorimetry and scanning electron microscopy, to gain a comprehensive understanding of the roles of bio-based latex admixtures on the physical, mechanical, and microstructural properties of the examined specimens. It was found that the addition of bio-based latex admixtures led to changes in the hydration process, mineralogical composition, and liquid water transport. For example, the water absorption coefficient was found to be approximately 40% lower compared to cement mortars produced using a reference latex additive without the vegetable oil-based component. Moreover, cement mortars with a bio-based latex admixture containing camelina oil exhibited comparable compressive strength to those produced solely from ordinary Portland cement. Thus, the newly developed bio-based polymeric nanodispersion represents a new class of more environmentally friendly admixtures that can be effectively utilized for water-loaded structures.Item type:Publikace, Access status: open access , Polymeric bio-based nanodispersed admixtures for the production of hydrophobic Portland cement mortars(Frontiers Media, 2025) Ševčík, Radek; Kolář, Martin; Pokorný, Jaroslav; Zárybnická, Lucie; Honzíček, Jan; Machotová, JanaA current trend in the construction industry involves the development and employment of eco-friendly, durable, and sustainable materials. Numerous admixtures, including various polymers, are used to modify the properties of cement. Nonetheless, their effectiveness and environmental impacts are still a matter of discussion. In this context, this work was focused on the application of innovative vegetable oil-based polymeric nanodispersed admixtures, synthesized following green chemistry principles, such as using water as a solvent. The synthesized bio-based latex admixtures were incorporated with 30 wt% of vegetable oil-based monomers derived from camelina, linseed, and rapeseed oils. The produced ordinary Portland cement fine-grained mortars, containing 0.1 wt% of each bio-based latex admixture, were thoroughly examined using several instrumental methods, such as isothermal calorimetry and scanning electron microscopy, to gain a comprehensive understanding of the roles of bio-based latex admixtures on the physical, mechanical, and microstructural properties of the examined specimens. It was found that the addition of bio-based latex admixtures led to changes in the hydration process, mineralogical composition, and liquid water transport. For example, the water absorption coefficient was found to be approximately 40% lower compared to cement mortars produced using a reference latex additive without the vegetable oil-based component. Moreover, cement mortars with a bio-based latex admixture containing camelina oil exhibited comparable compressive strength to those produced solely from ordinary Portland cement. Thus, the newly developed bio-based polymeric nanodispersion represents a new class of environmentally friendly admixtures that may be effectively utilized for water-loaded structures.