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Two problems can be identified in biomagnetic (magnetocardiographic) studies: firstly, the difficulty of comparing the results of different experimenters due to the lack of a standard for equipment requirements (the research process is still underway), and second, there is no clearly defined processing technique, in particular, determining the location of a "false" (for example, post-infarction) dipole masked by the main current dipole (ECD-equivalent current dipole) of the heart. The paper considers the issues of inference and analysis of the transformation of the results of biomagnetic studies obtained on one structure of the input superconducting converter into another based on spatial-frequency transformations. This method works like an electronic magnifying glass.

The article considers the creation of a control system for the lateral motion of an aircraft based on an approach similar to the control of the total energy in a longitudinal channel. The structure of the control system is presented. It includes an aircraft-independent core and blocks for transition rudder and ailerons deflection commands. These blocks are based on the principle of inverse dynamics. An approach to creating a control system is proposed. Simulation modeling of the behavior of three aircraft with different aerodynamic configurations is carried out. The control quality is studied using a numerical modeling method.

The article considers methods for solving problems of geophysical monitoring of the environment in relation to powerful pulsed sources - quarry explosions, rocket remnants falling on to the ground of during satellite launches, meteorite fragments, etc. The general idea of the study is formulated as solving an inverse problem of restoring the source parameters based on its seismic and acoustic waves. Numerical modeling and experimental studies of the proposed methods for assessing the accuracy of spatial localization of sources are carried out on an example of using calibration spatially distributed explosions.

Optical-acoustic transducers (OAPs) can be used in all applications of applied optics, where precision measurements of the electromagnetic radiation power are required. They belong to thermal volumetric receivers of the "full spectrum" have a constant spectral sensitivity in a very wide range (0.3-10000 microns), and allow measuring both constant fluxes of electromagnetic radiation with a power of 10^-11 W with a dynamic range of 80 dB, and femtosecond terawatt laser pulses. The metrological parameters of OAPs are mainly determined by the design of the sensing elements performing the acoustic-mechanical transformation. The methods of increasing the sensitivity of the classical membrane sensing elements through the use of new materials, optimization of geometry, corrugation and edge perforation, as well as the use of cantilevers as new highly sensitive elements of pressure sensors are analyzed. The limiting capabilities of both classical and new methods of precision measurements of the deformation of a sensitive element of an OAP caused by the pressure of an expanding gas are presented.

The properties of optical phonons in InSb nanocrystals synthesized at the Si/SiO₂ interface of a silicon-on-insulator (SOI) structure are studied. The formation of InSb nanocrystals occurs as a result of diffusion of In and Sb atoms from implanted SiO₂ and Si regions to the bonding interface of the SOI structure at annealing temperatures of 1000 and 1100 °C for 0.5-5 hours. The Raman spectra are excited by laser radiation with a wavelength λ_ex = 514.5 nm at room temperature. The Raman scattering bands are observed in the spectra of the annealed structures whose position corresponds to the TO and LO modes in InSb. The effect of the high-frequency shift of the TO and LO modes in InSb nanocrystals is found, which reveals an inverse dependence on the annealing time as the temperature increases. The nature of the observed effect is related to deformations in nanocrystals. Non-hydrostatic deformations are present in nanocrystals formed after annealing at a temperature of 1000 °C. After annealing at a temperature of 1100 °C, deformations are present only at the initial stages of growth and are close to hydrostatic ones.

This study evaluates the laser time-of-flight method for measuring droplet velocities and sizes across a wide range of pressure characteristics of pneumatic nozzles. Determination of droplet sizes is based on high-velocity registration of the delay of scattering orders when the droplet crosses the laser beam. Determination of droplet sizes and velocities is based on high-speed registration of the delay of scattering orders when the droplet crosses the laser beams cross section. Two nozzles are examined as examples: one with coaxial liquid supply and the other with the liquid supplied at an angle to the air stream. A distinctive feature of these nozzles is the requirement for a high air stream pressure relative to the sprayed liquid pressure. The aim of the research is to determine the limitations of the droplet size and velocity ranges detectable by the instrument under conditions of low air pressure, where the spray quality is suboptimal due to the presence of both low-inertia small droplets and high-inertia large droplets, as well as significant jetting. It is found that the AOM-Systems instrument is capable of simultaneously detecting spherical droplets in the size range of 5 to 200 µm with velocities ranging from 2 to 120 m/s. The greatest dispersion in droplet sizes and velocities is observed when the liquid is supplied at an angle to the air stream. The jet structure of the plume generated by the nozzles is detected by means of contre-jour visualization.

The effect of post-exposure heat treatment on the change in the spectral and diffraction characteristics of photopolymer reflection holograms with different initial thicknesses of 8-10 μm and 20-25 μm is studied in two different cases of post-processing: immediately after completion of their recording, and after photopolymer hardening (tanning) by means of UV exposure. It is revealed that long-term heat treatment at 50 °C of unhardened holograms with a thickness of 10 μm leads to an increase in the modulation scale of the refractive index from 0.014 to 0.022. A significant shift of the spectral response to the short-wave region and expansion of its contour are established for untanned holograms, which may be due to photopolymer shrinkage and distortion of the spatial structure of the holographic grating. After the tanning procedure, heat treatment does not induce any significant changes in the spectral and diffraction characteristics of holograms, regardless of their thickness. Heating/cooling of 25-μm thick holograms, mainly at 50-5°C, leads to a bathochromic/hypsochromic stage of the spectral response of the hologram, controlled in real time, while there are no such spectral shifts for a hologram with a thickness of 8 μm, which creates prerequisites for the formation of athermolyzed holographic optical elements insensitive to temperature changes.

The article presents information on new and rare species of aphyllophoroides (Aphyllophorales s. l.) and agaricoides (Russulales, Boletales) fungi in the National Park «Krasnoyarsk Stolby». 88 new species of fungi were discovered. For each species, information on the location, substrate specificity and time of collection is provided. New species of protected fungi ( Alloclavaria purpurea (O. F. Müll.) Dentinger & D. J. McLaughlin, Hydnellum caeruleum (Hornem.) P. Karst. , Lactarius lignyotus Fr. , Sparassis crispa (Wulfen) Fr.) and new locations of previously known protected species ( Clavariadelphus pistillaris (L.) Donk , Ganoderma lucidum (Fr.) P. Karst., Hericium coralloides (Scop.) Pers., Onnia tomentosa (Fr.) P. Karst. , Osteina obducta (Berk.) Donk, Pseudohydnum gelatinosum (Scop.) P. Karst.) were identified.

The article provides information on new and rare species of order Agaricales in the national park «Krasnoyarsk Stolby». 156 new species of agaricoid fungi were discovered. The information is provided on the location, substrate affiliation and time of collection for each species. The information is provided on the location, substrate affiliation and time of collection for each species. New species of protected fungi ( Chlorophyllum rhacodes (Vittad.) Vellinga, Bolbitius reticulatus (Pers.) Ricken) and new locations of previously known ( Entoloma abortivum (Berk. & M. A. Curtis) Donk, Pleurotus calyptratus (Lindblad ex Fr.) Sacc.) protected species were identified.

Current climate change has a significant impact on the functioning of forest ecosystems. For mountainous areas, it is typical for undergrowth to colonize new territories. An urgent task in the observed conditions is to study the adaptation mechanisms of dominant trees. The object of the study was Siberian stone pine trees ( Pinus sibirica Du Tour) of the second age class, growing in the conditions of the altitudinal zonation of the Western Sayan. Important biochemical factors of resistance to stress associated with moisture loss include the synthesis of hydrophilic proteins. For the first time for this species, the features of accumulation of stress proteins-dehydrins (dhn) in needles during the transition to winter dormancy in conditions of altitudinal zonation were studied. It was found that open habitats of Siberian pine growing above the forest line are characterized by a reliable increase in the accumulation of dhn 65 kD in needles. In the studied areas, significant differences in the accumulation of stress protein in individual trees were recorded. The trees most resistant to climatogenic stress were identified as the most promising for obtaining seeds and reproducing forests under climate change conditions. The results obtained suggest the possibility of using the definition of dhn in needles, in combination with other parameters, to develop a comprehensive approach to identifying resistant and productive trees.