Key words: subcritical water, glaucine, des-glaucine, ESI-MS, NMR
The isomerization of non-racemic mixture of glaucine isomers into des-glaucine was held in subcritical water media under 200-300°С with the yeld 53 %. The structure of the product was proved with nuclear magnetic resonance spectroscopy (NMR) and electrospray ionization (ESI-MS).
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ГОСТ
7.0.100-2018
The Development of Des-Glaucine Production Method in Subcritical Water Media / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2009. – Т. 4. – № 3. – С. 3-6. - DOI:
TRANSLIT
Razrabotka metoda polucheniya des-glaucina v srede subkriticheskoj vody / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2009. – Т. 4. – № 3. – S. 3-6. - DOI:
En
The Development of Des-Glaucine Production Method in Subcritical Water Media. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 3-6 (2009). https://doi.org/
Key words: supercritical fluid, oil extraction coefficient, thermobaric conditions
An experimental setup for studying the displacement of oil in a wide range of pressures
(up to 20 MPa) and temperatures (up to 373 K), that reflects thermobaric, geological,
and physico-chemical conditions in real oil-beds and parameters of displacing agents
is constructed. The results of experimental displacement of kerosene by supercritical
carbon dioxide at 313 ÷ 353 K and 7 ÷ 12 MPa demonstrate a high efficiency of this
technology for the output of low-viscosity oils.
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ГОСТ
7.0.100-2018
Effect of Thermobaric Conditions in a Uniform Bed onto a Low-viscosity Oil Displacement by Supercritical Carbon Dioxide / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2009. – Т. 4. – № 3. – С. 7-15. - DOI:
TRANSLIT
Vliyanie termobaricheskih uslovij v odnorodnom plaste na vytesnenie malovyazkoj nefti sverhkriticheskim dioksidom ugleroda / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2009. – Т. 4. – № 3. – S. 7-15. - DOI:
En
Effect of Thermobaric Conditions in a Uniform Bed onto a Low-viscosity Oil Displacement by Supercritical Carbon Dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 7-15 (2009). https://doi.org/
Key words: supercritical and water-alcoholic extracts, Ascidia, Halocynthia aurantium, bio-test, sea urchins, embryo, exogastrulation, Infusoria
Strongylocentrotus intermedius is studied. It is showen that water-alcohol extract has no remarkable effect onto gametes, process fertilization, development of embryo and larvae of sea urchin. If the SC extract is added during the gamete fusion, the fertilization and cell-division of blastomers are not affected, but the gastrulation becomes abnormal — the exogastrulas are formed. Moreover, during the cultivation of embryo in a cultural medium with SC extracts, the growth of Infusoria is depressed. It is likely that the origin of differences in the biological effects of SC and water-alcohol extracts ought to look for in peptide or secondary metabolite fractions, since no distinct differences in li pid fractions are detected.
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ГОСТ
7.0.100-2018
Influence of Supercritical and Water-alcohol Extracts from <em>Halocynthia</em> <em>aurantium </em>onto Gametes, Zygotes and Embryo of Sea Urchin / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2009. – Т. 4. – № 3. – С. 16-24. - DOI:
TRANSLIT
Vliyanie sverhkriticheskih i vodno-spirtovyh ekstraktov ascidii halocynthia aurantium na gamety, zigoty i embriony morskogo ezha / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2009. – Т. 4. – № 3. – S. 16-24. - DOI:
En
Influence of Supercritical and Water-alcohol Extracts from <em>Halocynthia</em> <em>aurantium </em>onto Gametes, Zygotes and Embryo of Sea Urchin. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 16-24 (2009). https://doi.org/
Key words: supercritical fluid, antisolvent, phase diagram, rapid expansion, RESS, nanoparticles, polyisobutylene, polystyrene, modification
On the experimental test bench Thar RESS-100-2 Base the dispersion process of polyisobutylene in the range of temperatures 45 ÷ 120 °C and pressures 100 ÷ 350 bar was investigated; the particle size was 30 ÷ 1000 nm. The possibility of managing the particle size by varying of the process parameters was revealed. The new method of polymer particles modification during the rapid solution expansion was suggested. In the modification process the effect of agglomeration is suppressed and the particles are covered by modifier (NaCl). The availability of application of superctitical fluid antisolvent to the dispersion of polymers to nanoparticles is based. The experimental test bench for this method is described. Catching method for polymer nanoparticles formed in antisolvent was suggested. While dispersing polystyrene in the system “tolyene - polystyrene - supercritical carbon dioxide” under pressure 40 ÷ 150 bar and temperature
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ГОСТ
7.0.100-2018
The Dispersion of Polymer Materials Using Supercritical Fluid Media / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2009. – Т. 4. – № 3. – С. 25-38. - DOI:
TRANSLIT
Dispergirovanie polimernyh materialov s ispol'zovaniem sverhkriticheskih flyuidnyh sred / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2009. – Т. 4. – № 3. – S. 25-38. - DOI:
En
The Dispersion of Polymer Materials Using Supercritical Fluid Media. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 25-38 (2009). https://doi.org/
Key words: germaniumsilicate glass, subcritical and supercritical water, etching, fibreoptic reflectometry
Etching of germaniumsilicate singlemode optical fibre edge in sub- and supercritical
water was studied by means of fibreoptic reflectometer (FOR) and scanning electron
microscopy (SEM). It was shown that in the case of germaniumsilicate core edge the
etching rate is much higher than for silica cladding edge. This leads to the formation
of a “well” at the edge of the fibre, which becomes deeper as etching goes forward.
The oscillatory character of the FOR signal is caused by an interference effect of the
light reflected from the edge of the core and the edge of the cladding. This interference
allows one to calculate the etching rate at different pressures and temperatures of
water and, therefore, in its different states (liquid, vapour and supercritical). The
lowest measured etching rate (10 -3 nm/s) was measured at 200 °C and 54 atm; the
maximum etching rate (~30 nm/s) was reached at 400 °C and 246 atm. The etching
rate increases with temperature in accordance with Arrhenius law (apparent activation
energy 58 ± 3 kJ/mole). The character of the FOR signal changes at the late stages of
etching from regular oscillating to random noisy due to the formation of defects of
different size on the fibre edge, which are easy to observe using the SEM imaging.
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ГОСТ
7.0.100-2018
Reflectometric Studies of Etching of Silica Optical Fibre with Germaniumsilicate Core in Sub- and Supercritical Water / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2009. – Т. 4. – № 3. – С. 39-55. - DOI:
TRANSLIT
Reflektometricheskaya diagnostika processa travleniya kvarcevogo opticheskogo volokna s germanijsilikatnoj serdcevinoj v sub- i sverhkriticheskoj vode / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2009. – Т. 4. – № 3. – S. 39-55. - DOI:
En
Reflectometric Studies of Etching of Silica Optical Fibre with Germaniumsilicate Core in Sub- and Supercritical Water. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 39-55 (2009). https://doi.org/
Real-Gas Properties of n-Alkanes, O2, N2, H2O, CO, CO2 and H2 for Diesel Engine Operation Conditions
Key words: real-gases, diesel engine, computational fluid dynamics
The objective of the research outlined in this paper was to develop the analytical approximations for calculating real-gas properties (p—v—Tdata, thermodynamic functions: internal energy, enthalpy, and entropy, and specific heats) of vapor-phase n-alkanes from C1 (methane) to C14 (normal tetradecane), O2, N2, H2O, CO, CO2 and H2 within the range of pressure 0.05 ≤ p ≤ 20 MPa and temperature 280 ≤ T ≤ 3000 K aimed for implementation into computational fluid dynamics (CFD)-codes simulating the operation process in modern Diesel engines. The analytical approximations have been developed based on available literature data and on the new equation of state for moderately dense gases. The approximations reported are rather simple and therefore can be used directly in CFD codes. Approximations for mixing rules are also provided.
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ГОСТ
7.0.100-2018
Real-Gas Properties of n-Alkanes, O<sub>2</sub>, N<sub>2</sub>, H<sub>2</sub>O, CO, CO<sub>2</sub> and H<sub>2</sub> for Diesel Engine Operation Conditions / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2009. – Т. 4. – № 3. – С. 56-105. - DOI:
TRANSLIT
Svojstva real'nyh gazov — n-alkanov, O2, N2, H2O, CO, CO2 i H2 v usloviyah ekspluatacii dizel'nogo dvigatelya / – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2009. – Т. 4. – № 3. – S. 56-105. - DOI:
En
Real-Gas Properties of n-Alkanes, O<sub>2</sub>, N<sub>2</sub>, H<sub>2</sub>O, CO, CO<sub>2</sub> and H<sub>2</sub> for Diesel Engine Operation Conditions. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 56-105 (2009). https://doi.org/