ECONOMIC-INSTITUTIONAL PROBLEMS OF EUROPEAN REMILITARIZATION by Serhii V. Kuzminov

“…Therefore, we can argue that the million shells for Ukraine cost Europeans significantly more than a few pitiful billion euros. …”
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Optimizing the hydroxyapatite nanocrystals derived from biological sources to increasing efficiency and quality by Mahsa Abbasi, Hossein Derakhshankhah, Soheila Kashanian, Zhila Izadi, Mohammad Soleiman Beigi

“…Materials & Methods: This study synthesized and analyzed hydroxyapatite from White Sea shells using simple and affordable methods like ultrasonic, hydrothermal, and thermal-ultrasonic decomposition. …”
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Development and Characterization of Biomass-Derived Carbons for the Removal of Cu²⁺ and Pb²⁺ from Aqueous Solutions by Vahid Rahimi, Catarina Helena Pimentel, Diego Gómez-Díaz, María Sonia Freire, Massimo Lazzari, Julia González-Álvarez

“…This research explores the synthesis and application of carbon-based adsorbents derived from olive stones and almond shells as low-cost biomass precursors through carbonization at 600 °C combined with chemical activation using KOH, H₃PO₄, and ZnCl₂ with carbon/activating agent (C/A) ratios of 1:2 and 1:4 (<i>w</i>/<i>w</i>) at 850 °C for the removal of Cu²⁺ and Pb²⁺ ions from aqueous solutions. …”
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Crystalline and amorphous structure selectivity of ignoble high-entropy alloy nanoparticles during laser ablation in organic liquids is set by pulse duration by Robert Stuckert, Felix Pohl, Oleg Prymak, Ulrich Schürmann, Christoph Rehbock, Lorenz Kienle, Stephan Barcikowski

“…Particle cores in all cases exhibit a homogeneous distribution of the metals Cr, Mn, Fe, Co, and Ni, while particle shells were found to vary between manganese-enriched oxide layers and thin graphitic carbon coatings. …”
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Activated Lignin for Biodiesel Formation by Amanda Tanner, Melanie Beazley, Michael Hampton

“…Current biodiesel production is costly, in part due to the catalysts added during transesterification and later washed out. …”
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Students’ Survival Experience in the Information Blockade on the Example of the 2022 Siege of the Ukrainian City Mariupol by olena melnykova-kurhanova, Olena Ryzhko

“…Using the case study method, posts, photos, and videos from open sources were examined to fill in gaps regarding students who remained under siege. …”
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Effect of Vanadium Addition on the Wear Resistance and Rolling Contact Fatigue of Cast Class D Railway Wheels by Samuel Carlos Winiarski, Mário José-Bueno, Ana Cecília de Carvalho, Rodrigo da Silva Miranda, Denilson Santos Monteiro, Andrei Bavaresco Rezende, Noé Cheung, Paulo Roberto Mei

“…However, it incurs high maintenance costs, exceeding $1.5 billion annually, with most of this amount allocated to rolling stock maintenance. …”
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Jewelry and ornamental concretions with fossils of the Republic of Kabardino-Balkaria. Mineral composition, gemological characteristics by D. A. Petrochenkov, E. Yu. Baraboshkin

“…Concretions with fossils of commercial quality are associated with lower Aptian deposits, representing marlstone with a large number of shells, mainly ammonites, and, to a lesser extent, bivalves. …”
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