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Information × Registration Number 0224U031676, 0122U002024 , R & D reports Title Diffusion and electrodynamic phenomena in multicomponent inhomogeneous systems for medical and biological information technologies popup.stage_title Head Netreba Andriy V., Кандидат фізико-математичних наук Registration Date 04-06-2024 Organization Taras Shevchenko National University of Kyiv popup.description2 The development of the theory of multicomponent diffusion, the study of the features of the generation of non-attenuating temperature waves, the development of new approaches for the application of physical methods in the field of medical diagnostic endoscopy have been carried out. To describe the effect of diffusion in liquid media, a nonlinear diffusion law with a transport (interdiffusion) coefficient, which is a system constant, is used. It was established that the nonlinear processes of the interaction of substances in a multicomponent diffusion system lead to the emergence of a diffusion-controlled spatio-temporal modulation of the concentration of components, the characteristics of which depend on the parameters that determine the speed and nonlinearity of the corresponding mutual diffusion. It is shown that the effect of heat waves leads to significant changes in spatially distant objects. Such changes can lead both to modulation of the structure of interaction between near-surface atoms and molecules, and to significant structural changes of distant objects. A realistic nonlinear model of the behavior of non-locally connected neurons is proposed, which describes the states of synchronization and desynchronization during epileptic seizures. Several different architectures of convolutional neural networks are analyzed for the problem of denoising medical images. It shows how each of the models copes with different types of noise. The quality of noise reduction is checked. As a result of conducting kinetic studies of the processes of reduction of Au3+ cations with the formation of AuNPs of various shapes, it was established that for the investigated concentrations and reaction systems an increase in optical density in the wavelength range of 300–1100 nm is characteristic, effective reaction rate constants of the corresponding formation processes were calculated.  Product Description popup.authors Bediukh Oleksandr R. Hrisshchenko Liudmela M. Lemeshko Vasyl V. Nechayeva Valentyna M. Оbuhovskyi Viacheslav V. Osypenko Roman S. Osypenko Yuliia А. Okhrimenko Tamara І. Synytska Nadiia V. Sytnikova Nadiia L. Sudakov Oleksandr O. popup.nrat_date 2024-06-04 Close