Viscosity of fluoride melts promising for molten salt nuclear reactors

The viscosity of molten salt, as an important hydrodynamic property, should be taken into account when creating and operating molten salt nuclear reactors (MSRs). An eutectic FLiNaK is considered to be one of the most suitable for use in MSR designed for the minor actinides transmutation. The dynamic viscosity of the molten mixtures FLiNaK + NdF3, FLiNaK + CeF3 and FLiNaK + LaF3 was measured in a temperature range of 600–700 °C using the high-temperature rotary rheometer FRS-1600. Lanthanide fluorides were considered as analogues of actinide fluorides. It was revealed that the additions of rare earth fluorides (REM)F3 in amount of 15 mol. % significantly impact the viscosity of the system FLiNaK + (REM)F3,but the effect of NdF3, CeF3 and LaF3 was found to be almost the same. In order to calculate the kinematic viscosity of the molten mixture FLiNaK + NdF3, a regression equation depending on several parameters was derived. This model equation can be used for predicting the kinematic viscosity of molten mixtures of FLiNaK with other rare earth fluorides.https://doi.org/10.15826/elmattech.2023.2.02

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New forms of coal industry management

The article studies progress and problems of development of coal industry in modern Russia and views regulatory basis and perspectives of use of new forms of coal industry management, which include public-private partnership and formation of territorial clusters.peer-reviewe

New possibilities and tools for corporate strategic management for supporting its high competitiveness and economic effectiveness

The purpose of the article is to determine new possibilities and tools for corporate strategic management and to substantiate the necessity for their usage for supporting a company’s competitiveness and economic effectiveness in modern Russia. The information and analytical basis of the research consists of the materials of the Report on global competitiveness for 2016-2017, prepared within the World economic forum. For verification of the offered hypothesis, the methods of deduction, induction, synthesis, systemic, problem, and structural & functional analysis, as well as analysis of causal connections, and the methods of modeling and formalization were used. Because of the research, a conclusion is made that imperfection of the process of strategic management is a reason for low competitiveness and economic effectiveness of modern Russian companies. To solve this problem, the authors substantiate the necessity for applying the principle of interactivity, which supposes consideration of new possibilities and usage of leading tools in the process of corporate strategic management and develop the recommendations and offer an interactive model for strategic management of a modern company in modern Russia for the purpose of supporting high competitiveness and economic effectiveness of domestic entrepreneurship.peer-reviewe

Novel Molten Salts Media For Production of Functional Materials

Physical-chemical properties of molten salt media based on potassium cryolite with additions of boron or scandium oxides have been considered from the point of view of their feasibility in production of functional materials, such as aluminum alloys. Liquidus temperature in the quasi-binary systems: [KF–AlF3]-B2O3, [KF–AlF3]-Sc2O3, [KF–NaF–AlF3]-B2O3, and [KF–NaF–AlF3]-Sc2O3 has been measured by thermal analysis. Solubility of Al2O3, B2O3, and Sc2O3 in potassium and potassium-sodium cryolites has been determined. The potassium-cryolite-based melts were found to have an enhance protective function due to a low melting point, and an effective refining ability due to a good alumina solubility. It has been assumed that for aluminum alloys production the potassium-cryolite-based melts can be used as fluxes with improved properties as well as electrolytes for low-temperature electrolysis

Area of effective catch of crab traps in the northwestern part of the Tartar Strait

Japanese cone-shaped traps for crabs are calibrated with the data of trawl survey in the northwestern Tartar Strait. The 100 % effective catch area for each trap in the order does not exceed 665 m2 for spiny crab, 1513 m2 for king crab, 3811 m2 for horsehair crab, and 4019 m2 for tanner crab opilio. Unification of methods for the stock assessment by trap surveys is discussed

The Global Financial Crisis and the Banking System of Russia: Problems and Prospects

Russia's banking system is one of the most important for the country's economic development systems and developing dynamically. The banking system in each country reflects its economic and financial situation, the first responding to the UPS and downs in the national and global economy. The stable development of the banking sector ensures the stability of the entire state. Meanwhile, the crises affecting the banking system can change the growth prospects of national economies, resulting in ensuring the financial stability of the state is the basis of its development. Over the past two decades, the banking system of different levels of development of States faced financial turmoil, destabilizing national financial markets. Being in the center of economic life, serving the interests of manufacturers, banks mediate communication between industry and trade, agriculture and population. Banks play a huge role in further deepening and improvement of market relations in the country. Keywords: economic crisis, banking system, Russia, global financial crisis, economic development JEL Classifications: L83, Z30, Z32, F6