Search Results - "S. A. Kovaleva"

Mechanochemical Formation of Solid Solution of Aluminum in Copper by Grigoreva, T. F., Petrova, S. A., Kovaleva, S. A., Kiseleva, T. Yu, Zholudev, S. I., Vosmerikov, S. V., Udalova, T. A., Devyatkina, E. T., Polyakov, S. N., Lyakhov, N. Z.

“…X-ray diffraction analysis is used to study the mechanochemical formation of a solid solution in the Cu–10 wt % Al system. The formation of the solid solution…”
Get full text

Mechanochemical Synthesis of Cu–Al Alloyed Powders and Their Consolidation by Spark Plasma Sintering by Grigoreva, T. F., Petrova, S. A., Kovaleva, S. A., Dudina, D. V., Batraev, I. S., Kiseleva, T. Yu, Zholudev, S. I., Vosmerikov, S. V., Devyatkina, E. T., Udalova, T. A., Polyakov, S. N., Lyakhov, N. Z.

“…The mechanochemically synthesized Cu–20 wt % Al alloys are studied by the X-ray diffraction analysis and scanning electron microscopy. It is shown that, after…”
Get full text

Approaches to determining the cost of laboratory tests by Khayrullin, I. I., Omelyanovskiy, V. V., Gostishchev, R. V., Sukhorukikh, O. A., Kovaleva, S. A., Gorodetsky, B. G.

“…Background . Determining the cost of laboratory tests is a significant factor in the context of economic analysis and management of clinical diagnostic…”
Get full text

Review of methods for planning the scope of medical care and financing of the healthcare system by the subjects of the Russian Federation by Kovaleva, S. A., Fedyaev, D. V., Sisigina, N. N.

“…The article presents a review of current and alternative methods for planning the scope and financing of medical care in the subjects of the Russian…”
Get full text

Analysis of tariff agreements of the constituent entities of the Russian Federation: form and completeness of data presentation by Fedyaev, D. V., Nikitin, F. S., Artamonova, T. N., Kovaleva, S. A., Omelyanovskiy, V. V.

“…Background. Each constituent entity of the Russian Federation (RF) on the basis of the territorial programme of state guarantees of free medical care for…”
Get full text

Мechanochemically Synthesized Nickel-Containing Aluminosilicate Modifiers for Tribotechnical Aluminum Alloys by Kovaleva, S. A., Grigor’eva, T. F., Vityaz’, P. A., Zhornik, V. I.

“…— Silumins are advantageous antifriction alloys to produce friction units. However, owing to their low hardness and strength, there is a call for developing…”
Get full text

Tin Bronze Reinforced with Cu9Al4 Particles: Mechanochemical Synthesis and Consolidation by Sintering under Pressure by Grigoreva, T. F., Kovaleva, S. A., Kvashnin, V. I., Petrova, S. A., Devyatkina, E. T., Vosmerikov, S. V., Zhornik, V. I., Vityaz, P. A., Lyakhov, N. Z.

“…X-ray diffraction analysis and optical and electron microscopy have been used to study the effect of mechanical activation conditions of the Cu–12% Sn mixture…”
Get full text

Study of the products of interaction between iron and gallium during mechanical activation by Grigor’eva, T. F., Kiseleva, T. Yu, Kovaleva, S. A., Novakova, A. A., Tsybulya, S. V., Barinova, A. P., Lyakhov, N. Z.

“…Mechanochemical interaction between iron and gallium has been investigated. The multistage character and the dynamics of mechanochemical formation of the…”
Get full text

Mechanocomposites based on tungsten and interactive metals by Grigor’eva, T. F., D’yachkova, L. N., Barinova, A. P., Vosmerikov, S. V., Kovaleva, S. A., Lyakhov, N. Z.

“…Mechanocomposites composed of tungsten and metals interacting with it, such as nickel and iron, have been studied; a composition, structure, density, and…”
Get full text

Structure and Properties of Mechanically Synthesized Tin Bronze Powders and the Related Sintered Materials by Grigoreva, T. F., Kovaleva, S. A., Zhornik, V. I., Devyatkina, E. T., Vosmerikov, S. V., Vityaz, P. A., Lyakhov, N. Z.

“…The structural-phase state of a powder mixture of copper and tin ( X = 12–20 wt % Sn) is studied after its high-energy milling in a planetary ball mill. The…”
Get full text

Thermal Oxidation of a Single-Crystal GaAs Surface Treated in Sulfur Vapor by Mittova, I. Ya, Sladkopevtsev, B. V., Dontsov, A. I., Syrov, Yu. V., Kovaleva, A. S., Tarasova, O. S.

“…— Surface modification of GaAs in sulfur vapor by different procedures and subsequent annealing and thermal oxidation have an advantageous effect on the…”
Get full text

Aluminum Matrix Composites Reinforced with Cu9Al4 Particles: Mechanochemical Synthesis and Consolidation by the Spark Plasma Sintering by Grigoreva, T. F., Dudina, D. V., Petrova, S. A., Kovaleva, S. A., Batraev, I. S., Vosmerikov, S. V., Devyatkina, E. T., Lyakhov, N. Z.

“…X-ray analysis and scanning electron microscopy have been used to study mechanochemically synthesized Al/10 wt % Cu 9 Al 4 and Al/20 wt % Cu 9 Al 4 composites…”
Get full text

The evaluation of the balance of standard rates within the program on state guarantees to deliver free medical care to the citizens of the Russian Federation by Fedyaev, D. V., Kovaleva, S. A., Gerasimova, K. V.

“…Aim. The evaluation of absolute and relative difference in the growth of standard rates and financing of medical help based on the calculation for Program on…”
Get full text

Mechanochemical Synthesis of a Precursor for the Formation of a Magnetostrictive Functional Material Galfenol under Sintering Conditions by Grigoreva, T. F., Kiseleva, T. Yu, Kovaleva, S. A., Zholudev, S. I., Vosmerikov, S. V., Devyatkina, E. T., Grigorev, V. D., Lyakhov, N. Z.

“…The products of mechanochemical synthesis and subsequent sintering of the Fe–20 wt % Ga system are studied by X-ray diffraction, electron diffraction,…”
Get full text

Application of Differential Scanning Calorimetry to Study the Resistance of UHMWPE-Based Composite Materials to Electron Irradiation by Kiseleva, T. Yu, Kovaleva, S. A., Grigoreva, T. F., Tsepelev, A. B., Zholudev, S. I., Vosmerikov, S. V., Devyatkina, E. T., Ivanenko, I. P., Kostenko, O. V., Yakuta, E. V., Ilyushin, A. S., Lyakhov, N. Z.

“…Differential scanning calorimetry is used to study the effect doses of electron irradiation on the structural state of composite materials synthesized from…”
Get full text

Determination of Folic Acid in Multivitamin Preparations by Reversed Phase HPLC by Alekseeva, A. S., Gavrilin, M. V., Shemeryankina, T. B., Smirnova, M. S., Fedorova, E. P., Kargina, T. M., Novikov, O. O., Kovaleva, S. A., Boyko, N. N.

“…A great variety of components in multivitamin preparations containing folic acid, and a variety of test methods and conditions of folic acid determination…”
Get full text

New Approaches to the Application of DART Mass Spectrometry Coupled with Planar Chromatography for the Analysis of Mixtures of Organic Compounds by Ovcharov, M. V., Barsegyan, S. S., Kovaleva, S. A., Kulikova, L. N., Borisov, R. S.

“…A desorption cell for TLC/DART mass spectrometry is developed. An analysis of mixtures of pharmaceutical substances has shown that the proposed approach can…”
Get full text

Copper–Tin Materials for Tribotechnical Purposes by Grigoreva, T. F., Kovaleva, S. A., Zhornik, V. I., Vosmerikov, S. V., Vityaz, P. A, Lyakhov, N. Z.

“…The products of mechanochemical synthesis in the Cu–20% Sn system at various stages of mechanical treatment were studied by X-ray diffraction, micro X-ray…”
Get full text

Limiting phase trajectories and non-stationary resonance oscillations of the Duffing oscillator. Part 1. A non-dissipative oscillator by Manevitch, L.I., Kovaleva, A.S., Manevitch, E.L., Shepelev, D.S.

“…This paper demonstrates an analytical description of the non-stationary resonance response of the Duffing system subject to 1:1 resonance. The approximate…”
Get full text

Magneto-Abrasive Materials by Grigoreva, T. F., Kovaleva, S. A., Zhornik, V. I., Khomich, N. S., Kiseleva, T. Yu, Devyatkina, E. T., Vosmerikov, S. V., Vityaz, P. A., Lyakhov, N. Z.

“…Magneto-abrasive materials, obtained via the joint mechanical activation of magnetic (metal) and abrasive (diamond, silicon carbide) components in a…”
Get full text