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Article
Power Supply System of a Tethered Unmanned Aerial Vehicle
A power supply system for an unmanned aerial vehicle (UAV) based on a cable connection with a primary source of electrical energy located on the earth’s surface is described. The ground power source from a sta...
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Article
Object Recognition Method Based on Their Signal-Geometric Signs through a Robotic Security Complex
This article considers a methodological approach to recognize the intrusion of objects into a protected area using an optoelectronic robotic complex, which is based on the existence of a certain characteristic...
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Article
A Compact Pulse Magnetron Microwave Generator Based on a Solid-State Switch
A pulsed magnetron system generating high-energy microwave pulses with a frequency of 400 Hz and an average power of 0.5 kW is described. To generate a magnetron current pulse, a circuit with 12 identical tran...
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Article
Photogrammetric Counts of Pacific Salmon Using Consumer-Grade Unmanned Aerial Vehicles
A method for photogrammetric counts of Pacific salmon using consumer-grade unmanned aerial vehicles (UAVs) has been developed. It is based on estimation of the abundance of spawners and spawning redds by photo...
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Article
Selection of an Optimum Method for the Assessment of the Saccharina japonica Stock in the Northwestern Tatar Strait
An experimental study aimed at comparing different methods for assessing the Saccharina japonica commercial stock, a target commercial kelp species in the Russian Far East, was carried out in 2021. Samples were c...
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Article
Current Pulse Switches on the Basis of Reverse Switch-on Dynistors for Power Electrophysical Equipment
The results of the development and the main characteristics of a new generation of semiconductor current switches (250 kA/25 kV/70 C) based on assemblies of series-connected reverse switched-on dynistors (RSDs...
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Article
A Laser Monitor with Independent Lighting and Brightness Amplification for Imaging High-Temperature Combustion of Metal Nanopowders
A laser monitor system with independent brightness amplifier and a mirror scheme of image formation based on active copper bromide vapor medium is described that allows visualization of the surface of metal na...
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Article
A Pulsed Magnetron Microwave Generator Based on a Solid-State Switch
A pulsed magnetron system that generates high-energy microwave pulses at a frequency of 100 Hz and an average power of 5 kW is described. A magnetron current pulse is generated using a circuit with 16 identica...
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Article
A Two-Channel Laser Monitor for Observing Processes of High-Temperature Combustion of Metal Nanopowders
In this paper, we present a laser monitor with two image acquisition channels based on two brightness amplifiers and two digital cameras that allows visualizing the surface of metal nanopowders during combusti...
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Article
The Kinematic Origin of Electronic Bound States in Continuum in Planar Semiconductor Heterostructures
Localized electronic states in a planar semiconductor heterostructure with energies in the range of continuum spectrum are considered within one-band approximation. The reason for the confinement is shown to b...
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Article
Extracting Vanadium, Molybdenum, and Tungsten from Acidic Solutions via Adsorption on Modified Montmorillonite
The possibility of extracting vanadium, molybdenum, and tungsten compounds from acidic media via adsorption is demonstrated. Highly dispersed layered aluminosilicates, modified with a cationic surfactant (dide...
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Article
Recovery of copper from solutions by highly dispersed modified aluminum silicates
Sorption of copper ions from model solutions (1–100 mg/dm3 Cu) at pH = 5.5–9.5 and from wastewater (of the composition, mg/dm3: 0.2–0.4 Cu, 0.2–0.3 Zn, 0.3–0.4 Ni, 0.3–0.5 Fe, 0.6–0.9 Pb, 1.8 As, 0.2 Mn, 3.2 Mg) ...
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Article
A procedure for preparing vanadium pentoxide of improved quality
Sorption of vanadium polyoxo compounds onto a carbon sorbent modified with a quaternary ammonium compound, didecyldimethylammonium chloride, was studied. A flowsheet was suggested for selective recovery of van...
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Article
Study of ionic liquids by the method of voltammetry at the interface between two immiscible electrolytes
Ionic liquids were studied as the organic phase in the method of voltammetry between two immiscible electrolytes. The polarization of the interface between ionic liquid and water was studied; the dependence of...
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Article
Immunochromatographic and latex-agglutination systems for diphtheria toxin detection
The use of two monoclonal antibody types specific to different epitopes of diphtheria toxin systems have been developed to reveal diphtheria corynebacteria toxigenicity rapidly based on immunochromatographic a...
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Article
Recovery of electrical-resistivity and viscoelasticity relaxation in thermally aged bulk Pd40Cu30Ni10P20 metallic glass
The structural relaxation of a bulk Pd40Cu30Ni10P20 metallic glass is studied by measuring the electrical resistivity and infralow-frequency (0.05 Hz) internal friction. It is demonstrated that the structural rel...
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Article
Kinetics of structural relaxation of bulk and ribbon Pd40Cu30Ni10P20 glasses determined from electrical resistance measurements
The electrical resistances of ribbon and bulk Pd40Cu30Ni10P20 metallic glasses, whose quenching rates differ by four orders of magnitude, were precisely measured during cyclic heating. Three stages of electrical ...
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Article
Nitrate-containing ionic liquids as active membrane components of nitrate-selection electrodes
Two dialkylimidazolium nitrate ionic liquids (ILs) have been tested for use as an active component of plasticized PVC membranes in nitrate ion selective electrodes (ISEs). The potentiometric reversibility and ...
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Article
Ion-selective electrodes for the determination of ionic liquids in water using direct potentiometry
Ion-selective electrodes (ISEs) with membranes based on ion exchangers plasticized with o-nitrophenyl octyl ether (NPOE), diethyl sebacate (DES), or dibutyl phthalate (DBP) are used for the determination of ionic...
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Article
Use of monoclonal antibodies against horse immunoglobulin in an enzyme immunoassay of bacterial toxins and toxoids
Immunization of BALB/c mice by horse antiserum against diphtheria made it possible to obtain IgG1 monoclonal antibodies (MoAbs) 2B7E4 specific for light chains of horse immunoglobulin (Ig). Unlike commercial prep...
