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111.
Russian Physics Journal - In the present paper, the axial-vector form factor of the nucleon is considered for the hard- and soft-wall models. Plots of the axial-vector form factor of the nucleon... 相似文献
112.
In this paper, we established an analytical formula for the second virial coefficient (SVC) with Morse potential without using any numerical methods, and the obtained formula is applied to the calculation of the speed of sound of some matter at high temperature. This approach is based on the series expansion formula and special functions, which allows the exact evaluations of any thermodynamic properties of matter using the SVC. As an application, the obtained analytical formula is used for evaluation of the SVC with Morse potential for high‐temperature gas and the plasma region of the intermolecular interactions of neutral atom gases of B, Si, Zn, H2, N2, O2, NO, CO, He, Ne, Ar, Kr , and Xe . Based on the obtained formula of SVC, the speed of sound for gases of N2, Ar , and Zn are also determined analytically. A specific maximum temperature is chosen for every gas to ensure that there are still neutral atoms in the gas, and low temperatures are avoided due to quantum effects. The results are compared with numerical data and another analytical data from the literature. The new analytical solution is shown to be in good agreement with the compared data and is verified to supply proper thermodynamic data. 相似文献
113.
Yu. A. Yusibov I. Dzh. Alverdiev L. F. Mashadieva D. M. Babanly A. N. Mamedov M. B. Babanly 《Russian Journal of Inorganic Chemistry》2018,63(12):1622-1635
In connection with the contradictoriness of literature data, phase equilibria in the Ag–Sn–Se system were restudied by differential thermal analysis and X-ray powder diffraction analysis. A number of polythermal sections and the isothermal section at room temperature of the phase diagram were constructed, and a projection of the liquidus surface was built. The primary crystallization fields of phases and the types and coordinates of in- and monovariant equilibria were determined. It was demonstrated that, in the system, two ternary compounds, Ag8SnSe6 and AgxSn2 – xSe2 (0.84 < x < 1.06), form. The former melts congruently at 1015 K and undergoes a polymorphic transformation at 355 K, and the latter melts with decomposition by a peritectic reaction at 860 K. The formation of the compound Ag2SnSe3, which was previously reported in the literature, was not confirmed. Based on the phase diagrams of boundary binary systems and the results of the differential thermal analysis of a limited number of samples of the ternary system, equations were obtained for calculation and 3D modeling of the liquidus and phase-separation surfaces. 相似文献
114.
By use of Löwdin and Guseinov relations for the radial and angular part of two-center overlap integrals, respectively, the computer calculations of overlap integrals over Slater type orbitals (STOs) in molecular coordinate system are performed. The results of calculations are valid for arbitrary principal quantum numbers, screening constants and location of STOs. Excellent agreement with benchmark results and stability of the technique are demonstrated. 相似文献
115.
V. A. Mamedov S. V. Vdovina E. I. Vorkunova L. V. Mustakimova A. F. Saifina A. T. Gubaidullin I. Kh. Rizvanov Ya. A. Levin I. A. Litvinov 《Russian Chemical Bulletin》2008,57(6):1257-1263
Condensation of diethyl isophthaloyldiacetate, aromatic aldehyde, and urea in the presence of Me3SiCl proceeds efficiently and faster than in the absence of the latter to form 1,3-bis(2-oxo-1,2,3,4-tetrahydropyrimidin-6-yl)benzene
derivatives capable to give inclusion complexes with DMF.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1233–1239, June, 2008. 相似文献
116.
A. G. Guseinov A. G. Kyazym-zade V. M. Salmanov R. M. Mamedov A. A. Salmanova L. G. Gasanova A. Z. Mahammadov 《Optics and Spectroscopy》2016,121(6):897-900
Luminescence and photoconductivity of layered Cu3In5S9 crystals at high levels of optical excitation are studied experimentally. A pulsed nanosecond Nd:YAG laser with built-in second and third harmonic generators to generate 1064-, 532-, and 355-nm radiation is used as a light source. It is found that the photoluminescence spectra exhibit two emission bands due to zone–acceptor level and impurity donor–impurity acceptor transitions. It is shown that the photoconductivity in Cu3In5S9 is monopolar. The waveform of the photoconductivity consists of fast and slow components associated with two channels of recombination. 相似文献
117.
V. A. Mamedov V. L. Mamedova G. Z. Khikmatova D. B. Krivolapov I. A. Litvinov 《Russian Chemical Bulletin》2016,65(5):1260-1267
A Darzens condensation of α-chloroacetamide with aromatic aldehydes furnished a series of 3-aryl-2,3-epoxypropionamides, which were further converted to 5-[bromo(aryl)methyl]-2,2-dimethyl-1,3-oxazolidin-2-ones. 相似文献
118.
Gasanov R Aliyeva S Arao S Ismailova A Katsuta N Kitade H Yamada S Kawamori A Mamedov F 《Journal of photochemistry and photobiology. B, Biology》2007,86(2):160-164
Water splitting activity, the multiline EPR signal associated with S(2)-state of the CaMn(4)-cluster and the fast and slow phases of the induction curve of the millisecond delayed chlorophyll fluorescence from photosystem II (PSII) in the pH range of 4.5-8.5 were studied in the thylakoid membranes and purified PSII particles. It has been found that O(2) evolution and the multiline EPR signal were inhibited at acidic (pK approximately 5.3) and alkaline (pK approximately 8.1) pH values, and were maximal at pH 6.0-7.0. Our results indicate that the loss of O(2) evolution and the S(2)-state multiline EPR signal associated with the decrease of the millisecond delayed chlorophyll fluorescence only in alkaline region (pH 7.0-8.5). Possible correlations of the millisecond delayed chlorophyll fluorescence components with the donor side reactions in PSII are discussed. 相似文献
119.
R. K. Mamedov I. V. Malinin B. Z. Volchek A. S. Bobasheva B. V. Stolyarov A. G. Enikeeva 《Optics and Spectroscopy》2000,89(3):413-417
Spectroscopic studies of sorbing devices on the basis of silica capillaries coated by sorbing polymer films are carried out by methods of spectroscopy of multiple attenuated total internal reflection with the use of combined elements of internal reflection. A technique for inspecting and improving the technological process of manufacture of sorbing devices for solid-phase microextraction and subsequent chromatographic analysis of organic compounds is developed. 相似文献
120.
M. G. Vasiliev V. M. Mamedov S. A. Rukolaine V. S. Yuferev 《Bulletin of the Russian Academy of Sciences: Physics》2009,73(10):1406-1409
The growth of bismuth germanate crystals with uniform heater control has been simulated within the time-dependent approach.
To optimize the multisection heater control, the global heat transfer optimization problem in a crystallization setup was
considered. A new control algorithm, based on the solution of the optimization problem, is proposed. 相似文献