Ural State Technical University (USTU) is a public technical university in Yekaterinburg, Sverdlovsk Oblast, Russian Federation. It is the biggest technical institution of higher education in Russia, with close ties to local industry in the Urals. Its motto, Ingenium Creatio Labor, means "brilliance, creation, work"..
The article presents the rationale for the author’s vision of activating one of the intensive tools of economic recovery in the Syrian Arab Republic – digitalization. It is shown that the restoration with the help of “traditional” methods – strengthening of foreign economic activity - for Syrian Arab Republic is very limited by Western sanctions. Therefore, it is important to search for non-traditional ways, which is technically possible in modern conditions. The author believes that this is also possible in practice.
New cationic-anionic palladium(II) complexes have been prepared from adamantyl-substituted imidazolium salts and effect of structure of the adamantyl-substituted salts and synthesis conditions on the structure of these complexes with $${\rm{Pd}}({\rm{DMSO}}){\rm{Hal}}_3^ - $$ (1–4), $${\rm{P}}{{\rm{d}}_2}{\rm{Br}}_6^{2 - }$$ (5, 6), or $${\rm{PdCl}}_4^{2 - }$$ (7) anions has been studied. A number of palladium(II) complexes active against monoamine oxidase B has been prepared, effect of composition and structure on their biological activity have been revealed. The structure of the complexes has been confirmed by X-ray diffraction analysis, a conductometric study of complex 1 has been performed. MAO-inhibiting activity of the obtained complexes has been found to be on the level of reference compounds: 17.6% of residual enzyme activity upon inhibition by complex 3 as compared with 16.9% for reference compound (selegiline). Complexes with bromine ligand show higher activity than those with chlorine ligand. The results of this study can be used in organometallic and bioinorganic chemistry.
Abstract Today, an important task for the economy is to increase the efficiency of using primary fuel. At present, for nuclear power plants with VVER reactors, thermal efficiency is about 33%, with fast neutron reactors - more than 40%. This means that most of the heat produced is released into the atmosphere. In this paper, we consider methods to solve the problem of increasing energy efficiency by the example of NPPs with fast neutron reactors due to the utilization of low-grade waste heat. The results of practical implementation of utilization of low-potential thermal energy of thermal and nuclear power plants using heat pumps were generalized. The analysis of the utilization efficiency of waste heat from various NPP systems was performed.
A mixture of oils from fields in the Northern part of the Timan-Pechora oil and gas province is pumped through the Usa-Ukhta and Ukhta-Yaroslavl oil trunk pipelines. There are no reliable universal formulas for determining the viscosity of oil mixtures of different types. The purpose of this work is to investigate the violation of the rules of additive viscosity, density, light absorption coefficient when mixing light and heavy high-viscosity oils. As the test mixture No. 1, selected blend of light oil from oil processing unit "Usa Light oil" and heavy oil from oil processing unit "Usa Heavy oil". As mixture No. 2 selected blend oil on the inlet of oil pumping station "Ukhta-1" and heavy oil from Yarega field. As a result, it was found that the density of the mixture. 1 is quite well subject to the rules of additivity, but in a certain range of concentrations of heavy oil experimental data can be 3-5 % higher than calculated. The experimental values of the light absorption coefficient in the visible region for the studied mixtures may exceed the values calculated by the law of additivity by 10-15 %. The strong deviations of the viscosity of the mixture No. 2 from the viscosity calculated by the standard Walter additivity formula were revealed: the calculated values are 2-2,5 times higher than the measured ones. As the temperature increases, this difference decreases. The mixture No. 1 also shows deviations from the additive rule, but significantly smaller in magnitude: under the same conditions and concentrations of heavy oil, the measured viscosity of the mixture No. 1 is 5-20 % less than calculated by Walter's formula. Using regression analysis methods, Walter's formula was modernized and determination coefficients were calculated, confirming the validity of the transformed formulas for calculating the viscosity of mixtures No. 1 and No. 2 according to the corresponding rules of additivity of the double logarithm of viscosity, but with other constants. The results of the laboratory studies can be used for thermal-hydraulic calculations of the modes of pumping mixtures of heterogeneous oils through the main pipeline, operated by Transneft North, JSC, as well as for studying the possibilities of improving the energy efficiency of transportation of joint oil pumping from different shippers due to the optimal distribution of cargo flows.
