2 research outputs found
ΠΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡ ΠΏΠ΅ΡΠΎΠΊΡΠΈΠ½ΠΈΡΡΠΈΡΠΎΠΌ ΠΊΠ°ΠΊ ΡΠΏΠΎΡΠΎΠ± ΡΠ»ΡΡΡΠ΅Π½ΠΈΡ ΡΠΈΡΠΎΡΠΎΠ²ΠΌΠ΅ΡΡΠΈΠΌΠΎΡΡΠΈ Π³ΠΈΠ΄ΡΠΎΠ³Π΅Π»Π΅ΠΉ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π°Π»ΡΠ³ΠΈΠ½Π°ΡΠ° Π½Π°ΡΡΠΈΡ
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.ΠΠ»ΡΠ³ΠΈΠ½Π°Ρ Π½Π°ΡΡΠΈΡ β ΠΎΠ΄ΠΈΠ½ ΠΈΠ· ΡΠ°ΡΡΠΎ ΠΏΡΠΈΠΌΠ΅Π½ΡΠ΅ΠΌΡΡ
Π² Π±ΠΈΠΎΠΌΠ΅Π΄ΠΈΡΠΈΠ½Π΅ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ². ΠΠ΄Π½Π°ΠΊΠΎ ΡΠΊΠ°ΡΡΠΎΠ»Π΄Ρ ΠΈ Π³ΠΈΠ΄ΡΠΎΠ³Π΅Π»ΠΈ Π½Π° Π΅Π³ΠΎ ΠΎΡΠ½ΠΎΠ²Π΅ ΠΎΠ±Π»Π°Π΄Π°ΡΡ ΠΊΡΠ°ΠΉΠ½Π΅ ΡΠ»Π°Π±ΡΠΌΠΈ Π°Π΄Π³Π΅Π·ΠΈΠ²Π½ΡΠΌΠΈ ΡΠ²ΠΎΠΉΡΡΠ²Π°ΠΌΠΈ ΠΈ Π½ΡΠΆΠ΄Π°ΡΡΡΡ Π² ΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΠΈ. ΠΠ°ΠΌΠΈ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Ρ ΠΊΠΎΠΌΠ±ΠΈΠ½ΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ Π³ΠΈΠ΄ΡΠΎΠ³Π΅Π»ΠΈ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΆΠ΅Π»Π°ΡΠΈΠ½Π° ΠΈ Π°Π»ΡΠ³ΠΈΠ½Π°ΡΠ° Π½Π°ΡΡΠΈΡ, ΠΌΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΏΠ΅ΡΠΎΠΊΡΠΈΠ½ΠΈΡΡΠΈΡΠΎΠΌ Π² Π³Π΅ΡΠ΅ΡΠΎΡΠ°Π·Π½ΡΡ
ΡΡΠ»ΠΎΠ²ΠΈΡΡ
Π² ΡΡΠ΅Π΄Π΅ ΡΡΠΈΠ»ΠΎΠ²ΠΎΠ³ΠΎ ΡΠΏΠΈΡΡΠ°. ΠΠΎΠ΄ΠΈΡΠΈΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠΉ ΡΠ°ΠΊΠΈΠΌ ΠΎΠ±ΡΠ°Π·ΠΎΠΌ Π°Π»ΡΠ³ΠΈΠ½Π°Ρ Π½Π°ΡΡΠΈΡ ΠΎΠ±Π»Π°Π΄Π°Π΅Ρ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½Π½ΡΠΌ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌ ΠΊΠ°ΡΠ±ΠΎΠ½ΠΈΠ»ΡΠ½ΡΡ
, ΠΊΠ°ΡΠ±ΠΎΠΊΡΠΈΠ»ΡΠ½ΡΡ
ΠΈ Π½ΠΈΡΡΠΎΠ³ΡΡΠΏΠΏ. Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½ΡΠ΅ Π°Π²ΡΠΎΡΠ°ΠΌΠΈ ΠΈΠΎΠ½Π½ΠΎ ΠΈ ΠΈΠΎΠ½Π½ΠΎ-ΡΠ΅ΡΠΌΠ΅Π½ΡΠ°ΡΠΈΠ²Π½ΠΎ ΡΡΠΈΡΡΠ΅ Π³ΠΈΠ΄ΡΠΎΠ³Π΅Π»ΠΈ ΠΎΠ±Π»Π°Π΄Π°ΡΡ ΡΠ»ΡΡΡΠ΅Π½Π½ΡΠΌΠΈ Π°Π΄Π³Π΅Π·ΠΈΠ²Π½ΡΠΌΠΈ ΡΠ²ΠΎΠΉΡΡΠ²Π°ΠΌΠΈ ΠΈ Π½Π΅ ΠΏΡΠΎΡΠ²Π»ΡΡΡ ΡΠΈΡΠΎΡΠΎΠΊΡΠΈΡΠ½ΠΎΡΡΠΈ. ΠΡΠΎΠΌΠ΅ ΡΠΎΠ³ΠΎ, ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡ Π°Π»ΡΠ³ΠΈΠ½Π°ΡΠ° Π½Π°ΡΡΠΈΡ ΠΎΠΊΠ°Π·ΡΠ²Π°Π΅Ρ ΠΏΠΎΠ»ΠΎΠΆΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π° ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΡ ΠΊΠ»Π΅ΡΠΎΠΊ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΊΠΎΠ½ΡΡΠΎΠ»ΡΠ½ΡΠΌΠΈ Π½Π΅Π°Π΄Π³Π΅Π·ΠΈΠ²Π½ΡΠΌΠΈ Π°Π»ΡΠ³ΠΈΠ½Π°Ρ-ΠΆΠ΅Π»Π°ΡΠΈΠ½ΠΎΠ²ΡΠΌΠΈ Π³ΠΈΠ΄ΡΠΎΠ³Π΅Π»ΡΠΌΠΈ. ΠΡΠΎ Π΄Π΅Π»Π°Π΅Ρ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΡΠΌ Π΄Π°Π»ΡΠ½Π΅ΠΉΡΠ΅Π΅ ΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½ΠΎΠ³ΠΎ Π±ΠΈΠΎΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π° Π΄Π»Ρ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ Π±ΠΈΠΎΠΈΠ½ΠΆΠ΅Π½Π΅ΡΠ½ΡΡ
ΡΠΊΠ°ΡΡΠΎΠ»Π΄ΠΎΠ² ΠΈ 3D-ΠΊΡΠ»ΡΡΠΈΠ²ΠΈΡΠΎΠ²Π°Π½ΠΈΡ
Neutron diffraction studies of temperature induced phase transitions in Rb2KFeF6 elpasolite
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