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    ΠœΠΎΠ΄ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΡ пСроксинитритом ΠΊΠ°ΠΊ способ ΡƒΠ»ΡƒΡ‡ΡˆΠ΅Π½ΠΈΡ цитосовмСстимости Π³ΠΈΠ΄Ρ€ΠΎΠ³Π΅Π»Π΅ΠΉ Π½Π° основС Π°Π»ΡŒΠ³ΠΈΠ½Π°Ρ‚Π° натрия

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    Sodium alginate is one of the most frequently used materials in biomedicine. However, alginate-based scaffolds have extremely low adhesive properties and have to be improved. The authors have proposed combined hydrogels of gelatin and sodium alginate which have been modified by peroxynitrite in heterophasic conditions using ethanol. It has been determined that thus modified sodium alginate contains an increased level of carbonyl, carboxyl and nitro groups. Authors have developed chemically and chemical-enzymatically cross-linked hydrogels with better adhesive properties and absence of cytotoxicity. Moreover, sodium alginate modification has a positive impact on cell morphology in comparison with control group of non-adhesive alginate-gelatin hydrogels. It allows the further improvement and application of the biomaterial which have been developed by the authors for bioengineering scaffold production and 3D culturing.ΠΠ»ΡŒΠ³ΠΈΠ½Π°Ρ‚ натрия – ΠΎΠ΄ΠΈΠ½ ΠΈΠ· часто примСняСмых Π² Π±ΠΈΠΎΠΌΠ΅Π΄ΠΈΡ†ΠΈΠ½Π΅ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΠΎΠ². Однако скаффолды ΠΈ Π³ΠΈΠ΄Ρ€ΠΎΠ³Π΅Π»ΠΈ Π½Π° Π΅Π³ΠΎ основС ΠΎΠ±Π»Π°Π΄Π°ΡŽΡ‚ ΠΊΡ€Π°ΠΉΠ½Π΅ слабыми Π°Π΄Π³Π΅Π·ΠΈΠ²Π½Ρ‹ΠΌΠΈ свойствами ΠΈ Π½ΡƒΠΆΠ΄Π°ΡŽΡ‚ΡΡ Π² ΡΠΎΠ²Π΅Ρ€ΡˆΠ΅Π½ΡΡ‚Π²ΠΎΠ²Π°Π½ΠΈΠΈ. Нами ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Ρ‹ ΠΊΠΎΠΌΠ±ΠΈΠ½ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Π΅ Π³ΠΈΠ΄Ρ€ΠΎΠ³Π΅Π»ΠΈ Π½Π° основС ΠΆΠ΅Π»Π°Ρ‚ΠΈΠ½Π° ΠΈ Π°Π»ΡŒΠ³ΠΈΠ½Π°Ρ‚Π° натрия, ΠΌΠΎΠ΄ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ пСроксинитритом Π² Π³Π΅Ρ‚Π΅Ρ€ΠΎΡ„Π°Π·Π½Ρ‹Ρ… условиях Π² срСдС этилового спирта. ΠœΠΎΠ΄ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹ΠΉ Ρ‚Π°ΠΊΠΈΠΌ ΠΎΠ±Ρ€Π°Π·ΠΎΠΌ Π°Π»ΡŒΠ³ΠΈΠ½Π°Ρ‚ натрия ΠΎΠ±Π»Π°Π΄Π°Π΅Ρ‚ ΡƒΠ²Π΅Π»ΠΈΡ‡Π΅Π½Π½Ρ‹ΠΌ содСрТаниСм ΠΊΠ°Ρ€Π±ΠΎΠ½ΠΈΠ»ΡŒΠ½Ρ‹Ρ…, ΠΊΠ°Ρ€Π±ΠΎΠΊΡΠΈΠ»ΡŒΠ½Ρ‹Ρ… ΠΈ Π½ΠΈΡ‚Ρ€ΠΎΠ³Ρ€ΡƒΠΏΠΏ. Π Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π½Ρ‹Π΅ Π°Π²Ρ‚ΠΎΡ€Π°ΠΌΠΈ ΠΈΠΎΠ½Π½ΠΎ ΠΈ ΠΈΠΎΠ½Π½ΠΎ-Ρ„Π΅Ρ€ΠΌΠ΅Π½Ρ‚Π°Ρ‚ΠΈΠ²Π½ΠΎ ΡΡˆΠΈΡ‚Ρ‹Π΅ Π³ΠΈΠ΄Ρ€ΠΎΠ³Π΅Π»ΠΈ ΠΎΠ±Π»Π°Π΄Π°ΡŽΡ‚ ΡƒΠ»ΡƒΡ‡ΡˆΠ΅Π½Π½Ρ‹ΠΌΠΈ Π°Π΄Π³Π΅Π·ΠΈΠ²Π½Ρ‹ΠΌΠΈ свойствами ΠΈ Π½Π΅ ΠΏΡ€ΠΎΡΠ²Π»ΡΡŽΡ‚ цитотоксичности. ΠšΡ€ΠΎΠΌΠ΅ Ρ‚ΠΎΠ³ΠΎ, модификация Π°Π»ΡŒΠ³ΠΈΠ½Π°Ρ‚Π° натрия ΠΎΠΊΠ°Π·Ρ‹Π²Π°Π΅Ρ‚ ΠΏΠΎΠ»ΠΎΠΆΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠ΅ влияниС Π½Π° ΠΌΠΎΡ€Ρ„ΠΎΠ»ΠΎΠ³ΠΈΡŽ ΠΊΠ»Π΅Ρ‚ΠΎΠΊ ΠΏΠΎ ΡΡ€Π°Π²Π½Π΅Π½ΠΈΡŽ с ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½Ρ‹ΠΌΠΈ Π½Π΅Π°Π΄Π³Π΅Π·ΠΈΠ²Π½Ρ‹ΠΌΠΈ Π°Π»ΡŒΠ³ΠΈΠ½Π°Ρ‚-ΠΆΠ΅Π»Π°Ρ‚ΠΈΠ½ΠΎΠ²Ρ‹ΠΌΠΈ гидрогСлями. Π­Ρ‚ΠΎ Π΄Π΅Π»Π°Π΅Ρ‚ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½Ρ‹ΠΌ дальнСйшСС ΡΠΎΠ²Π΅Ρ€ΡˆΠ΅Π½ΡΡ‚Π²ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΈ использованиС Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π½ΠΎΠ³ΠΎ Π±ΠΈΠΎΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Π° для получСния Π±ΠΈΠΎΠΈΠ½ΠΆΠ΅Π½Π΅Ρ€Π½Ρ‹Ρ… скаффолдов ΠΈ 3D-ΠΊΡƒΠ»ΡŒΡ‚ΠΈΠ²ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡ

    Neutron diffraction studies of temperature induced phase transitions in Rb2KFeF6 elpasolite

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    International audienceA neutron diffraction study of temperature induced phase transition in Rb2KFeF6 elpasolite has been performed. At room temperature the structure is cubic with space group Fm3m. At T = 170 K a structural phase transition takes place. Space group and atom coordinates in this phase has been defined. The crystal structure is good refined by orthorhombic space group Pmnn. Possible models are discussed
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