[en] By authors was investigated the equilibriums in four-component Na₂SO₄-K₂SO₄-CaSO₄-N₂O system by translation method following from the principle of compatibility. The translation method let forecast the construction of diagram of phase equilibriums of any multicomponent system

[en] Four-component of water saline system from the sulphate of sodium, potassium, calcium present the same from component five-component mutual system Na, K, Ca // So₄, Cl - H₂O, equilibrium is define condition of education and treatment line of saline deposit of sea type

[en] In present work authors present the results of investigation of phaseequilibrium of isotherm 50^dig^C of Na₂SO₄-K₂SO₄-CaSO₄-H₂O system bytranslation method. By this method was investigated phase equilibrium ofisotherm 25 ^dig^C of Na₂SO₄-K₂SO₄-CaSO₄-H₂O system

No abstract available

[en] Phase equilibriums of Na, Ca//SO₄, Cl-H₂O were studied by means of translation method. The diagrams of phase equilibriums of Na, Ca//SO₄, Cl-H₂O for isotherms 25 and 50 deg C were constructed. The analysis of constructed diagrams showed the possibility of complex processing of hydrochloric deposits containing sodium and calcium chlorides and sulfates.

[en] The vibrational motion dynamics of domain walls (DWs) in the iron garnet Tb₃Fe₅O₁₂, a low-frequency magnetic field, and the temperature range 200–295 K (which includes the magnetic compensation point of this ferrimagnet, T_c ≈ 249 K) is studied by a magnetooptical method. The temperature dependence of the DW vibration amplitude in this garnet crystal near T_c has a resonance character. A theoretical model of the magnetic resonance of DWs is proposed to interpret the obtained experimental results; according to this model, the DW mass tends to infinity and the resonance frequency tends to zero when temperature approaches the magnetic compensation point.

[en] An attempt has been made to explain to the scientific and technical establishment the fact that the fuzzy controllers with input/output parameters represented by the set of precise terms of automate control objects, which operative algorithm is verbally presented as a unique experience of experts in the domain, in simpler way, with higher speed, slighter error and less costs as compared with the standard fuzzy controllers. (paper)

[en] The paper presents a mathematical model in the form of a second-order nonlinear differential equation with initial and boundary conditions and a numerical method for solving the problem based on the finite-difference method of the technological process of filtration of low-concentration suspensions to determine the ranges of variation of the ion-exchange filter parameters, as well as the results of computational experiments. When developing a mathematical model, the following main filter parameters and physico-mechanical properties of solutions (liquids) were taken into account: filtration rate, rate of sedimentation of gel particles on the pores of the filter, filter porosity, filter layer thickness, kinetic coefficient, dynamic viscosity coefficient and outlet concentration of the suspension. The developed mathematical model and a numerical solution method allow determining the deposition rate of gel particles in the pores of the filter, the outlet concentration of the solution and changes in the concentration of the driving solution of the ion-exchange filter. (paper)

[en] In this article, power consumption of pumping station control systems is discussed. To study the issue, two simulation models of oil level control in the iThink software have been developed, using a frequency converter only and using a frequency converter and a fuzzy controller. A simulation of the oil-level control was carried out in a graphic form, and plots of pumps power consumption were obtained. Based on the initial and obtained data, the efficiency of the considered control systems has been compared, and also the power consumption of the systems was shown graphically using a frequency converter only and using a frequency converter and a fuzzy controller.

The models analysis has shown that it is more economical and safe to use a control circuit with a frequency converter and a fuzzy controller. (paper)

No abstract available