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1.
Damir Sagdeev Il'giz Gabitov Chingiz Isyanov Vener Khairutdinov Mansur Farakhov Zufar Zaripov Ilmutdin Abdulagatov 《Journal of the American Oil Chemists' Society》2019,96(6):647-662
The densities of oleic acid were measured over the temperature range from (293 to 459) K at atmospheric pressure using a densimeter based on the modified hydrostatic weighing method. The dynamic viscosities of the same oleic acid sample were measured using a capillary viscometer (VPZ-2 m) in the range from (293 to 363) K at atmospheric pressure. The combined expanded uncertainty of the density, atmospheric pressure, viscosity, and temperature measurements at the 95% confidence level with a coverage factor of k = 2 is estimated to be 0.15%, 1.0%, 3.5%, and 15 mK, respectively. The values of uncertainty for density and viscosity include the effects of purity and calibration (total expanded uncertainty). These experimental data were used to develop wide-range correlations for the density and viscosity based on theoretically confirmed Arrhenius–Andrade and Vogel-Tamman-Fulcher (VTF) models. The value of the glass temperature ( T g= 179.78 K.) for the oleic acid was estimated using the VTF parameters derived from the present viscosity measurements. To additionally validate the reliability of the measured density data, the same oleic acid samples were measured using the pycnometric method. The present study showed that the densities measured using the modified hydrostatic weighing densimeter (HWD) agree with the values obtained using the pycnometric method within 0.09% for Sample 1 and 0.25% for Sample 2. 相似文献
2.
V. Kh. Kadyrov I. E. Polishchuk A. M. Khairutdinov 《Powder Metallurgy and Metal Ceramics》1985,24(8):628-631
Conclusions The corrosion resistance of detonation-deposited coatings from aluminum- and boron-containing PKh20N80 alloy, nickel, and stainless steel powders markedly surpasses that of constructional steel. The electrochemical properties of such detonation-deposited coatings are determined by their composition and thickness. The basis material is effectively protected against corrosion by 600-Mm-thick coatings. Under conditions of corrosive and mechanical wear detonation-deposited coatings from aluminum- and boron-containing 20% Cr-80% Ni alloy, nickel, and stainless steel powders operate satisfactorily under loads of not more than 5 MPa. The results of service tests have demonstrated the usefulness of detonation-deposited coatings from alloyed powders. Coating with powder of composition III was found to increase the useful life of certain parts of spraying equipment two to two and a half times.Translated from Poroshkovaya Metallurgiya, No. 8 (272), pp. 52–55, August, 1985. 相似文献
3.
Mikhail V. Vener Oleg G. Kharlanov Andrey Yu. Sosorev 《International journal of molecular sciences》2022,23(21)
Charge transport in crystalline organic semiconductors (OSCs) is considerably hindered by low-frequency vibrations introducing dynamic disorder in the charge transfer integrals. Recently, we have shown that the contributions of various vibrational modes to the dynamic disorder correlate with their Raman intensities and suggested a Raman-based approach for estimation of the dynamic disorder and search for potentially high-mobility OSCs. In the present paper, we showcase this approach by revealing the highest-mobility OSC(s) in two series of crystalline naphthalene diimide derivatives bearing alkyl or cycloalkyl substituents. In contrast to our previous studies, Raman spectra are not measured, but are instead calculated using periodic DFT. As a result, an OSC with a potentially high charge mobility is revealed in each of the two series, and further mobility calculations corroborate this choice. Namely, for the naphthalene diimide derivatives with butyl and cyclopentyl substituents, the estimated room-temperature isotropic electron mobilities are as high as 6 and 15 cm2 V–1 s–1, respectively, in the latter case even exceeding 20 cm2 V–1 s–1 in a two-dimensional plane. Thus, our results highlight the potential of using the calculated Raman spectra to search for high-mobility crystalline OSCs and reveal two promising OSCs, which were previously overlooked. 相似文献
4.
K. A. Khairutdinov 《Journal of Engineering Physics and Thermophysics》1972,22(6):770-771
The problem of an equivalent constant exponent in real-gas processes is analyzed here. A numerical example is shown where air undergoes adiabatic compression.Notation p
pressure
- T
absolute temperature
- v
specific volume
-
, k
adiabatic exponents
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 22, No. 6, pp. 1107–1109, June, 1972. 相似文献
5.
V. K. Fedorenko R. K. Ivashchenko V. Kh. Kadyrov A. M. Khairutdinov V. V. Sergeev 《Powder Metallurgy and Metal Ceramics》1991,30(11):921-926
Translated from Poroshkovaya Metallurgiya, No. 11 (347), pp. 24–30, November, 1991. 相似文献
6.
K. A. Khairutdinov 《Journal of Engineering Physics and Thermophysics》1973,24(4):521-525
The feasibility of applying numerical differentiation methods to tables of thermodynamic functions is demonstrated on several numerical examples.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 24, No. 4, pp. 735–739, April, 1973. 相似文献
7.
V. F. Khairutdinov F. M. Gumerov M. I. Farakhov Z. I. Zaripov T.R. Akhmetzyanov H. N. Truong 《Petroleum Science and Technology》2019,37(3):290-295
Current paper represents the results of the study on extraction of hydrocarbons from oil emulsions using liquid and supercritical extraction processes. High-viscosity oil from Ashalchinskoye accumulation has been taken as a base for the emulsions with subsequent addition of water (0.5–30% wt.). A mixture of propane and butane has been applied as an extractant. The investigations have been carried out at temperatures 85–140?°C and pressures 10–15?MPa. The achieved output of light hydrocarbons is 93% of the total mass of hydrocarbons in emulsion. In parallel with the extraction, deasphaltizing has also been carried out. 相似文献
8.
The paper deals with the problem of material dispersion using supercritical fluid media. At the same time, emphasis is made on modifications(SAS, GAS, SEDS and ASES) of the supercritical fluid anti-solvent method of dispersion. The results of SAS method implementation for dispersion of pure polycarbonate and polycarbonate doped with "CdSe/CdS-core/shell" quantum dots(carried out in the pressure range of 8.0-25.0 MPa at temperatures of 313.15 K and 358.15 K) are submitted. The range of the operating parameters has been established through the example of pure polycarbonate dispersion, which provides the production of nanoparticles with the size range of 10-100 nm. Encapsulation of Cd Se/Cd S quantum dots into polycarbonate using the SAS method has no effect on optical properties of the encapsulated quantum dots. The results of paracetamol dispersion using the SEDS method are presented. The effect of operating conditions of the paracetamol dispersion process on morphology of the obtained product is described. Co-dispersion of ethylene–vinyl acetate copolymers and low-density polyethylene mixtures by SEDS method has been carried out under pressures of 8.0-25.0 MPa at temperatures of 313 K, 323 K, and 333 K. The comparison of melting and crystallization between the resulting copolymer mixtures and mixtures with the same composition obtained by mixing in the liquid melt, has shown that implementation of SEDS results in an increase of crystallinity degree of the polymer mixtures. 相似文献
9.
V. F. Khairutdinov T. R. Akhmetzyanov F. M. Gumerov I. Sh. Khabriev M. I. Farakhov 《Theoretical Foundations of Chemical Engineering》2017,51(3):299-306
The results of using processes of liquid and supercritical fluid extraction to isolate hydrocarbons from oil-bearing sands have been presented. The initial oil-bearing sand is characterized by a concentration of hydrocarbons of 7.23 wt % of the total weight of the sandstone. A mixture containing 75 wt % propane and 25 wt % butane has been used as the extracting agent. Extraction processes have been carried out in a temperature range of 80–140°C and pressure range of 5–10 MPa. 相似文献
10.
E. I. Mikulin Yu. A. Shevich A. G. Merzhanov Yu. M. Grigor'ev Yu. A. Gal'chenko V. V. Barelko B. A. Solov'ev S. A. Drozdov V. F. Salokhin B. Ya. Lyubov N. I. Yalovoi B. Ya. Lyubov N. I. Yalovoi I. N. Manusov Yu. V. Vidin Yu. A. Pshenichnov A. K. Fedyukovich V. V. Ivanov I. L. Dunin G. G. Matlin Yu. M. Kolyano V. I. Gromovyk N. P. Gaponenko N. V. Pal'tsun V. A. Nikulin R. V. Pal'tsun G. M. Bartenev A. I. Zhornik É. M. Kartashov Yu. N. Boldyrev R. A. Burtseva A. T. Litvinov G. A. Aksel'rud V. D. Onishchenko Yu. M. Rudov V. N. Uskov K. A. Khairutdinov 《Journal of Engineering Physics and Thermophysics》1972,22(6):777-805