Key words: porcine cartilage, decellularization, surfactants, supercritical CO2, ethanol, histological studies, DNA, mesenchymal stromal cells
At obtaining tissue-specific scaffolds of dense tissues from decellularized porcine articular cartilage it was found that full decellularization of tissue takes surfactant treatment followed by supercritical fluides treatment. An introduction of ethanol as a polarity modifier enables to increase significantly a completeness of cartilage decellularization backgrounded by reduction of the destructive changes in the extracellular matrix. Preservation of morphology and active proliferation of mesenchymal stromal cells of human adi pose tissue in the presence of tissue-specific scaffold of porcine cartilage evidence an opportunity of its use as a cell carrier for tissue engineering of cartilage.
doi:10.34984/SCFTP.2020.15.2.001
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ГОСТ
7.0.100-2018
Features of Obtaining a Tissue-Specific Matrix from Decellularized Porcine Cartilage / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2020. – Т. 15. – № 2. – С. 3-13. - DOI: 10.34984/SCFTP.2020.15.2.001
TRANSLIT
Osobennosti polucheniya tkanespecificheskogo matriksa iz decellyulyarizovannogo hryashcha svin'i / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2020. – Т. 15. – № 2. – S. 3-13. - DOI: 10.34984/SCFTP.2020.15.2.001
En
Features of Obtaining a Tissue-Specific Matrix from Decellularized Porcine Cartilage. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 3-13 (2020). https://doi.org/10.34984/SCFTP.2020.15.2.001
Key words: reactivity, titanium oxide, alumina, hydration, water fluid, titanates of rare-earth elements
The synthesis of strontium and barium titanates supported on the porous carrier (α-Al2O3) was performed via the treatment of the previously deposited precursors (titanium oxide, strontium nitrate, barium nitrite) in the water fluid medium at 400 °C. The obtained samples were characterized using the X-Ray Powder Diffraction (XRD) and Scanning Electron Microscopy combined with Energy Dispersion X-Ray analysis (SEM-EDX) techniques. It was found that in the presence of titanium oxide α-alumina undergoes a partial hydration with the formation of the basic aluminum hydroxide AlO(OH) (boemite) that was not found using the XRD method after the treatment of the pure α-Al2O3 in the same conditions. Using the SEM-EDX method we demonstrated that in spite of much higher content of alumina in the samples, strontium ions preferably interact with titania forming SrTiO3. It was shown that samples with different spatial distribution of the supported component inside the carrier particle can be obtained by varying the method of the preliminary deposition of the titania precursor (titanium tetra-iso-propoxide).
doi:10.34984/SCFTP.2020.15.2.002
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ГОСТ
7.0.100-2018
Reactivity of Aluminum and Titanium Oxides in the Conditions of Strontium and Barium Titanates Synthesis in Water Fluid Medium / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2020. – Т. 15. – № 2. – С. 14-26. - DOI: 10.34984/SCFTP.2020.15.2.002
TRANSLIT
Reakcionnaya sposobnost' oksidov alyuminiya i titana v usloviyah sinteza titanatov stronciya i bariya v srede vodnyh flyuidov / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2020. – Т. 15. – № 2. – S. 14-26. - DOI: 10.34984/SCFTP.2020.15.2.002
En
Reactivity of Aluminum and Titanium Oxides in the Conditions of Strontium and Barium Titanates Synthesis in Water Fluid Medium. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 14-26 (2020). https://doi.org/10.34984/SCFTP.2020.15.2.002
Key words: quasi-isothermalfoaming, amorphouspolylactide, carbondioxide, nucleation, Gibbsenergy, binodal, spinodal
Mechanisms controlling the nucleation kinetics in the foamed amorphous D,L-polylactide, which is preliminary plasticized using sub-ical or supercritical carbon dioxide, are established using analysis of videodata on the depressurization-induced quasi-isothermal (313,3 K) foaming of the polymer. Possible scenarios of the phase separation in the polylatide—carbon dioxide system at the stage, which precedes the expressed foam formation, are considered.
doi:10.34984/SCFTP.2020.15.2.003
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ГОСТ
7.0.100-2018
Competition of the Phase Separation Processes at Quasi-Isothermal Foaming of Polylactide in Carbon Dioxide Environment / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2020. – Т. 15. – № 2. – С. 27-41. - DOI: 10.34984/SCFTP.2020.15.2.003
TRANSLIT
Konkurenciya processov razdeleniya faz pri kvazi-izotermicheskom vspenivanii polilaktida v atmosfere dioksida ugleroda / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2020. – Т. 15. – № 2. – S. 27-41. - DOI: 10.34984/SCFTP.2020.15.2.003
En
Competition of the Phase Separation Processes at Quasi-Isothermal Foaming of Polylactide in Carbon Dioxide Environment. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 27-41 (2020). https://doi.org/10.34984/SCFTP.2020.15.2.003
Key words: Scots pine, supercritical fluid extraction, essential oil, terpenes, antibacterial activity
The paper presents a comparative analysis of influence of extraction methods that meet the princi ples of «green chemistry» on the extraction degree of components from the wood greenery of Pinus sylvestris. Analysis of the obtained alcohol extract, essential oil and supercritical extracts by GC-MS method showed that differences are observed in both the quantitative and qualitative composition of the studied objects. The highest selectivity of the diterpene fraction extraction and the expansion of the spectrum of individual components extracted from wood greenery by supercritical fluid extraction with carbon dioxide compared to traditional extraction methods while maintaining a high antimicrobial activity of the resulting extract to suppress Escherichia coli strains is shown.
doi:10.34984/SCFTP.2020.15.2.004
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ГОСТ
7.0.100-2018
Composition and Antimicrobial Activity of Essential Oil and Supercritical Extracts of <i>Pinus sylvestris</i> Wood Greenery / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2020. – Т. 15. – № 2. – С. 42-58. - DOI: 10.34984/SCFTP.2020.15.2.004
TRANSLIT
Sostav i antimikrobnaya aktivnost' efirnogo masla i sverhkriticheskih ekstraktov drevesnoj zeleni Pinus sylvestris / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2020. – Т. 15. – № 2. – S. 42-58. - DOI: 10.34984/SCFTP.2020.15.2.004
En
Composition and Antimicrobial Activity of Essential Oil and Supercritical Extracts of <i>Pinus sylvestris</i> Wood Greenery. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 42-58 (2020). https://doi.org/10.34984/SCFTP.2020.15.2.004
Key words: aromatization, dehydrocyclodimerization, n-butane, ZSM-5, Ga/H-ZSM-5, supercritical conditions
A comparative study of n-butane conversion into aromatic hydrocarbons over ZSM-5 zeolite in H-form and modified with gallium and platinum at 530 °C in gas phase (1 atm) and under supercritical conditions (190 atm) was carried out. The catalysts demonstrate high activity, stability, and productivity under supercritical conditions. In contrast to the gas phase process, modification of ZSM-5 zeolite with gallium and platinum had no affect on the distribution of n-butane aromatization products in supercritical conditions.
doi:10.34984/SCFTP.2020.15.2.005
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ГОСТ
7.0.100-2018
Dehydrocyclodimerization of <i>n</i>-Butane into Aromatic Hydrocarbons in Gas Phase and Supercritical Conditions Over ZSM-5 Zeolite in H-Form and Modified with Ga and Pt / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2020. – Т. 15. – № 2. – С. 59-66. - DOI: 10.34984/SCFTP.2020.15.2.005
TRANSLIT
Degidrociklodimerizaciya n-butana v aromaticheskie uglevodorody v gazofaznyh i sverhkriticheskih usloviyah na ceolite ZSM-5 v N-forme i modificirovannom Ga i Pt / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2020. – Т. 15. – № 2. – S. 59-66. - DOI: 10.34984/SCFTP.2020.15.2.005
En
Dehydrocyclodimerization of <i>n</i>-Butane into Aromatic Hydrocarbons in Gas Phase and Supercritical Conditions Over ZSM-5 Zeolite in H-Form and Modified with Ga and Pt. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 59-66 (2020). https://doi.org/10.34984/SCFTP.2020.15.2.005
Key words: aqueous salt solutions, phase equilibria, immiscibility, critical phenomena
The study concerns phase equilibria and critical phenomena in the Na2SO4—Na2B4O7—H2O system with two boundary subsystems: Na2B4O7—H2O (type 1 with liquid phase immiscibility of solutions) and Na2SO4—H2O (type 2) at 350—460 °C and pressure up to 100 MPa. It is shown that there are two three-phase regions — (l1-l2-s) adjacent to two aqueous salt subsystems and separated by a fluid region at the temperatures from 440 °C (critical point Q (l1=l2-s) of the type 2 binary system) to ~455 °C when these regions integrate with each other. The three-component system is characterized by two critical curves in saturated solutions. The curves extend from different critical points of the type 2 binary subsystem — g=l-s (point p) and l1=l2-s (point Q). These curves end at the ternary critical points — pR (g=l1-l2-s) and QN (g-l1=l2-s), respectively, with a four-phase equilibrium (g-l1-l2-s) between them in the temperature range of 350—380 °C, according to the visual observations in sealed quartz ampoules.
doi:10.34984/SCFTP.2020.15.2.006
Cite
ГОСТ
7.0.100-2018
Immiscibility of Liquid Phases and Critical Phenomena in the Na<sub>2</sub>SO<sub>4</sub>—Na<sub>2</sub>B<sub>4</sub>O<sub>7</sub>—H<sub>2</sub>O System at 350—460 °C and Pressure up to 100 MPa / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2020. – Т. 15. – № 2. – С. 67-78. - DOI: 10.34984/SCFTP.2020.15.2.006
TRANSLIT
Nesmeshivaemost' zhidkih faz i kriticheskie yavleniya v sisteme Na2SO4—Na2B4O7—H2O pri 350—460 °S i davlenii do 100 MPa / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2020. – Т. 15. – № 2. – S. 67-78. - DOI: 10.34984/SCFTP.2020.15.2.006
En
Immiscibility of Liquid Phases and Critical Phenomena in the Na<sub>2</sub>SO<sub>4</sub>—Na<sub>2</sub>B<sub>4</sub>O<sub>7</sub>—H<sub>2</sub>O System at 350—460 °C and Pressure up to 100 MPa. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 67-78 (2020). https://doi.org/10.34984/SCFTP.2020.15.2.006
Key words: propylene glycol, supercritical propane / butane mixture, phase equilibrium, solubility, Peng—Robinson equation of state, Mukhopadhyay and Rao mixing law
The phase equilibrium of the propylene glycol—propane/butane system and the solubility of propylene glycol in supercritical propane-butane mixture at temperatures 403, 423 and 443 K using a high-pressure optical cell were studied. The results were described using the Peng—Robinson equation of state and the Mukhopadhyay and Rao mixing law.
doi:10.34984/SCFTP.2020.15.2.007
Cite
ГОСТ
7.0.100-2018
Phase Equilibrium of the Binary System Propylene Glycol—Propane/Butane / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2020. – Т. 15. – № 2. – С. 79-86. - DOI: 10.34984/SCFTP.2020.15.2.007
TRANSLIT
Fazovoe ravnovesie binarnoj sistemy propilenglikol'—propan/butan / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2020. – Т. 15. – № 2. – S. 79-86. - DOI: 10.34984/SCFTP.2020.15.2.007
En
Phase Equilibrium of the Binary System Propylene Glycol—Propane/Butane. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 79-86 (2020). https://doi.org/10.34984/SCFTP.2020.15.2.007