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Article
Electrochemical performance of gold electrode in aqueous solution, containing fullerenol-d (C60(OH)24): the possibility of direct detection of fullerenol-d in aqueous solutions
The electrochemical performance of gold electrode in sulfuric acid was studied with addition of different concentrations of dissolved fullerenol-d with C60(OH)24 chemical formula. Based on the cyclic voltammetry ...
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Article
Fiber Optic Sensor for Cryogenic Liquids
Classical fiber optic physical sensors have intra-fiber structures that change the back-reflection response as environmental conditions change. These structures are often a modification of the fiber core glass...
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Article
Constructing Compartmental Models of Dynamic Systems Using a Software Package for Symbolic Computation in Julia
This paper considers the problem of constructing compartmental models of dynamic systems by using a software package for symbolic calculation written in Julia. The software package is aimed at unifying the for...
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Article
Formation of the Magnetization Wave in the Prebreakdown Discharge Stage over the Ferrite Surface
Based on numerical simulation, the electrical processes during pulsed electric fields passage through dielectrics insulator with high permeabilities µ and permittivities ε were analyzed. It is shown that the p...
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Article
Prospects of Using Automatic Calculation of the Pickup Values of Relay Protection in Reconfigurable Ring Distribution Networks
The use of ring circuits in 6 – 35 kV distributed electrical networks can improve the reliability of power supply. An increase in the load power and the share of distributed generation and renewable energy sou...
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Article
Synthesis and Properties of N,N′-Disubstituted Ureas Containing Adamantane and Pyridine (Quinoline) Fragments
A series of N,N′-disubstituted ureas containing a pyridine or quinoline fragment and a lipophilic adamantane moiety (13 examples, 53–94% yield) have been synthesized by the reaction of N,N-dimethyl-N′-(pyridin-2-...
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Article
Open AccessEnhanced neutrino polarizability
We point out that neutrinos can have enhanced couplings to photons, if light (pseudo)scalar mediators are present, resulting in a potentially measurable neutrino polarizability. We show that the expected suppr...
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Article
Method for Automatic Calculation of Current Relay Protection Actuation Data of Distribution Networks
The operating mode of promising 6 – 35 kV distribution electrical networks is characterized by a continuous change in their topology and electrical power flow distribution due to a change in load and the prese...
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Article
Development of Algorithms and Software for Modeling Controlled Dynamic Systems Using Symbolic Computations and Stochastic Methods
The development of software for synthesizing and analyzing models of controlled systems taking into account their deterministic and stochastic description is an important direction of research. Results of the ...
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Article
Multiplicatively Idempotent Semirings with Annihilator Condition
The structural theory of semirings with additional conditions is considered. Multiplicatively idempotent semirings with the annihilator condition are studied. General properties of such semirings are considere...
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Article
Size Effect’s Influence on the Magnetic Phase Transitions in the Nanosized Magnets
We present a simple approach (the mean spin method) to investigate the influence of the size of nanoparticles (thickness of ultrathin films) and the concentration of
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Article
Sealing Bitumen Moldings for Eliminating Water Leakage Through Defective Butt Joints Between Trough Elements
The primary components, compositions, and production process principles for compression-type sealing materials simulating poroizol moldings are considered.
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Article
Wide Temperature Range Fiber Optic Sensor
Currently, fiber Bragg gratings are the main type of sensor structure in fiber optic sensors. However, during their creation the protective-strength coating is removed, which reduces the strength and flexibili...
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Article
Prospective Relay Protection System for Digital Distribution Networks
With the development of 6 – 35 kV digital distribution networks, the manual calculation and input of operation parameters for relay protection (RP) starts to become problematic. Since calculating the operating...
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Article
Multiplicatively Idempotent Semirings in which All Congruences Are Ideal
The study of multiplicatively idempotent semirings with additional conditions is continued. It is proved that every multiplicatively idempotent semiring with ideal congruences is isomorphic to the direct pr...
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Article
Successive Solution–Liquid–Vapor Conversion of Metallic Lead Films for Highly Efficient Perovskite Solar Cells
An improved method is proposed for producing thin films of organo-inorganic methylammonium iodoplumbate (MAPbI3) with a perovskite structure from a layer of metallic lead (Pb0) by Successive Solution– Liquid–Vapo...
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Article
Texture and Anisotropy of the Mechanical Properties of MA2-1, MA14, and Mg–5Li–3Al Alloys
The anisotropy of the strength properties are compared with the averaged Schmid factors for the operating shear systems of textured pressed bars made of magnesium alloys MA2-1, MA14, and Mg–5Li–3Al in order to...
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Article
Completely Prime Ideals in Multiplicatively Idempotent Semirings
Structure properties of multiplicatively idempotent semirings are considered. Basic results concerning completely prime ideals in multiplicatively idempotent semirings are obtained. The main theorem descri...
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Article
Bonding Strength of Reaction-Cured Coatings on VZh171 ALLOY: Investigation by Sclerometry
The bonding strength of an enamel reaction-cured coating on the heat-resistant nickel alloy VZh171 was investigated by means of sclerometry. The threshold load required for cracks to appear in a coating was de...
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Article
Multi-machine Scaling of the Amplitude of Density Fluctuations from the Size of the Tokamak
The dependence was studied of the level of density fluctuations recorded at different devices on the minor and major radii of the tokamak. It is known that a high level of density fluctuations can negatively a...
