The paper proposes a new technological approach to the creation of binary, ternary and quaternary metal oxide compounds based on the columnar nanostructures regular matrices formation from valve metal oxides such as Ti, Nb, Zr, etc. and successive ion deposition of other metal oxides (Bi, Fe, Te, etc.) on them. The studying results of the metal oxide systems Bi–Ti–O, Bi–Fe–Nb–O and Bi–Te–Fe–Zr–O using scanning electron microscopy and electron probe X-ray spectral microanalysis, as well as phase transformations in the Bi–Ti–O system as a result of high-temperature annealing are presented.

The proposed article presents a theoretical model for the analysis of memory and switching processes in thin-film structures based on two- and three-component chalcogenides, presents the results of an experimental study of the effect of introducing a modifying element isomorphic with one of the main components of a chalcogenide semiconductor in order to impurity substitution and change the electrophysical properties of the materials under study. The possibility of creating thin-film non-volatile memory elements based on them is ana- lyzed.

The paper presents the results of calculations of the surface properties of alloys of binary metal systems of alkali metals. For solid solutions, calculations were carried out using an equation relating surface tension (ST, σ(x)) with the electron work function (EWF, φ(x)), where σ(x) and φ(x)) are monotonic functions of the ST and EW isotherms . It is shown that σ(x) and φ(x)) describe the experiment in the entire range of compositions with high accuracy. In this case, the important parameters determined from the processing of experimental data are a₀, β₀ and F – constants for the binary system A-B under consideration. It turned out that the product

a₀(F-1) or β₀(F-1) in the case of non-ideal systems makes a significant contribution to the limiting surface activity according to Rehbinder, and in the case of ideal systems these products are very small. Thus, these prod- ucts determine the degree of nonideality of the binary system. An analysis of the plotted curves of the ST and EW isotherms, adsorptions and surface concentrations shows their similarity in the liquid and solid states. A qualitative explanation is given for this unexpected result.

The electronic mechanisms underlying the physics of the electrochromic effect (ECE) are considered us- ing the example of an amorphous thin film of oxide potassium-tungsten bronze, and the technology for obtain- ing such a film is briefly described.

Electrochemical and electrooptical investigations of the films obtained by vacuum condensation were carried out. The potentiodynamic current-voltage and light transmission characteristics, the change in the color rate in the potentiostatic mode at different potentials, the change in the color rate in the galvanostatic mode at differ- ent current densities, and the change in the color rate in the potentiodynamic mode were recorded. The functional properties of disordered thin films of complex tungsten oxides, which determine their use in certain optoelectronic devices, on the one hand, are determined by the physical properties of condensed solid-state systems, but, on the other hand, it is the study of functional properties in combination with physical properties that makes it possible to build atomic-structural models of the material in one device or another.

This paper discusses scintillation hybrid systems in which syntin and dodecane serve as solvents, and a combination of naphthalene and PPO crystals improves the efficiency of the energy conversion process. By studying the energy transfer mechanisms and analyzing both spectral and spectrometric characteristics, the study aims to optimize the scintillator characteristics, in particular its relative light yield (Ly) to improve the detection efficiency of neutrinoless double beta decay of neodymium-150.

The article analyzes the radioactive contamination of quartz and glass photomultipliers, which are con- sidered as candidates for use in detecting neutrinoless double beta decay of neodymium. Using special methods to increase the efficiency of registration and unified measuring equipment, we revealed noticeable differences in the levels of isotopes 40K and 226Ra between quartz and glass samples. This highlights the advantages of using quartz over glass in these sensitive experimental conditions

The interaction of electron and ion rays with sample surfaces is investigated in relation to the findings of surface layer profiling in titanium oxides. The relationship between the ratio of the amplitude of the oxygen peak to the amplitude of the titanium peak and bombardment duration was investigated on TiO₂ and TiO sam- ples. It is demonstrated that electron bombardment of the oxide surface, along with ion bombardment, pro- motes carbide production. The effect of electron bombardment on surface layer stoichiometry is determined by whether the surface has been sprayed with ions

The article presents the results of studies of flat silver bromide microcrystals with [111] faces on the sur- face of gelatin films. The presence of photographically active components in various photographic gelatins was determined by the synthesis method. The presence of analytically undetectable photographically active impuri- ties in Japanese inert gelatins, which affect the formation of flat silver bromide microcrystals and their sensitiv- ity, is shown. The results of the studies allow us to estimate the photographic activity of gelatin.

A series of monomers of allyl derivatives of acrylamide were synthesized by alkylation of acrylamide in aqueous and aqueous-organic media. An analysis of the IR spectra of acrylamide and allyl derivatives of acrylamide is presented. The possibility of obtaining alkylated acrylamide – N-allylacrylamide and N,N- diallylacrylamide has been shown.

The article presents the pharmacological therapeutic effect of water due to the presence of hydrogen sul- fide and hydrosulfide ion, the content of which in total (total hydrogen sulfide – ∑H₂S) should not be less than 10 mg/l. The dependence of the ratio between H₂S and HS- on the pH value was studied: mainly H₂S is present in an acidic medium, HS- is present in an alkaline medium, and only in a highly alkaline one the appearance of the S^2- ion becomes possible. Isli-Su water is of the greatest practical importance. Besides hydrogen sulfide, bromine and iodine compounds contained in it add great value to these sources.

This article presents the results of a study of the structure of new conducting polymers with thermoelec- tric properties and their correlation with optoelectronic properties. The phase behavior was studied using syn- chrotron X-ray diffraction in a grazing beam geometry, using a special cell for in situ measurements at differ- ent temperatures. The possibility of controlling the texture of thin films of the obtained compounds by selecting the thermal history has been demonstrated.

The paper considers the possibilities of using a dilantant non-Newtonian fluid based on polymeric mate- rials. At the moment, a composition has been developed that fully meets the requirements and has successfully passed experimental tests.

The paper presents a comparison of technologies for manufacturing fiberglass products. The classification of technological processes for the manufacture of fiberglass products has been formed, depending on the type of construc- tion. An innovative technological solution for the manufacture of complex polymer structures is proposed.

The article proposes an innovative technological method that allows automating the adhesive assembly process of multilayer products made of polymer composite materials with the most complex geometric configu- ration. The method is implemented using technological equipment of the original design. The purpose of the study is to develop a methodology for designing technological equipment that provides the specified perfor- mance indicators of products. The methodology makes it possible to sequentially calculate the modes of opera- tion of the component parts of the tooling and to identify the boundary conditions for their use. A general view of a prototype created using a technique that implements a breakthrough technological method is presented.

The study examined the influence of the base polymer ratio in ternary polymer composite materials, which include alumosilicate cenospheres from fly ash as the third component. It demonstrated the effectiveness of introducing 20 % EVA into the polymer matrix to improve the dispersion of the alumosilicate filler in the elastomeric matrix. Additionally, it studied the influence of the polymer ratio in the mixture on their ability to swell in aggressive environments of varying polarity.

The purpose of this study is the disposal of coal production waste – ash and slag waste generated during the combustion of solid fuels. One of the promising areas of recycling is the synthesis of porous geopolymer materials. The most important technical and operational properties for them are compressive strength, density and thermal conductiv- ity, which in turn depend on the pore morphology. Therefore, it is of utmost importance to study a suitable pore for- mation method for obtaining a porous geopolymer with a controlled pore structure using surfactants.

This article proposes a simple and universal approach to the modification and functionalization of the surface of environmentally friendly fibrous nonwoven membranes based on biodegradable poly-3-hydroxybu- tyrate (PHB) and a natural biocompatible functional additive, iron-containing porphyrin, hemin by electro- forming. Modification and functionalization of the surface of the PHB membranes was carried out by adding low concentrations of hemin (from 1 to 5 wt. %) to the initial solutions. The structure and performance charac- teristics of the modified membranes were studied by various physicochemical methods, including differential scanning calorimetry, X-ray diffraction analysis, scanning electron microscopy.

Different cationic polyelectolytes have been considered as possible biocidal additives for waterborne paints based on styrene-acrylic dispersion. The influence of the additives on the antifouling properties of the coating have been studied as well as the rheological properties of the paint and the performance characteris- tics of the coatings. The effective concentrations of the additives for inhibiting the growth of Aspergillus niger have been determined.

The results of experimental substantiation of the possibility of obtaining an electroactive toluidine blue polymer in the presence of bacterial lipopolysaccharide are presented in this article. It is shown that the ad- sorption of lipopolysaccharide on the working electrode does not lead to qualitative changes in the CVA curves. At the same time, a decrease in the values of the current strength reflecting the electrochemical polymerization processes was noted. The resulting polymer demonstrated satisfactory electroactivity. The pol- ymer can become an effective activator of immune cells and can be used to study redox processes activation mediated by lipopolysaccharide.

The work is devoted to measuring viscosity, determining and comparing the molecular weights of two complex compounds in the organic solvent pseudocumene (PC) – a solution of a neodymium carboxylate salt and a solution of a neodymium carboxylate complex with tributyl phosphate (TBP).