Neutron investigations of self-diffusion of water molecules in plasmatic membrans

Булавин, Л. А.; Чехун, В Ф; Vasilkevich, A. A.; Kovalchuk, V. I.; Krotenko, V. T.; Slisenko, V. I.; Trindyak, V. P.; Chalyy, K. A.; Galyant, S. D.

doi:10.30970/jps.08.334

Cited by 5 publications

(2 citation statements)

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“…Note also that the last term in (16), containing the product of the reaction coordinate and the affinity, has the meaning of the interaction of the order parameter 𝜉 with the external field 𝐴 * . It should be noted that some examples of the interaction mechanisms of order parameter fluctuations in systems with chemical (biochemical) reactions were considered in the kinetic nonlinear models studied in [73][74][75][76][77][78][79][80][81][82][83][84][85].…”

Section: Ginsburg-landau Hamiltonian and Fluctuation Model For System...mentioning

confidence: 99%

Physical Aspects of 2014 Nobel Prize in Physiology or Medicine: 2. The First Principle and Universality Class for Grid Cells in the Brain

Chalyi,

Zaitseva

et al. 2023

Ukr. J. Phys.

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The main purpose of this review article is to use the fluctuation theory of phase transitions for studying the process of the emergence of hexagonal grid cells in the brain (2014 Nobel Prize in Physiology or Medicine). Particular attention is paid to the application of the Feynman’s classification of three stages of the study of natural phenomena for: 1) a brief description of the experimental stage of the discovery of the hexagonal structures of grid cells in human and animal brains; 2) the theoretical stage of research on the hexagon formation in the physical system of Benard cells, as well as the neurophysiological system of grid cells, discovered by Edward Mozer and May-Britt Mozer; 3) the most important stage, which allows one to formulate the first principle of the emergence of grid cells in the brain and, generally speaking, the first principle for the hexagon formation in different objects of inanimate and living nature. Our original theoretical findings are the following: (a) Polyakov’s conformal invariance hypothesis is violated for a system of grid cells in the brain; (b) the system of grid cells in the brain belongs to the universality class including the 3D Ising model in a magnetic field, as well as a real classical liquid-vapor system;(c) to formulate the first principle for a reliable theoretical justification of the emergence of hexagonal grid cells in the brain, it is necessary to use the fluctuating part of Gibbs thermodynamic potential (the Ginzburg–Landau Hamiltonian) for a system with chemical (biochemical) reactions.

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Section: Ginsburg-landau Hamiltonian and Fluctuation Model For System...mentioning

confidence: 99%

Physical Aspects of 2014 Nobel Prize in Physiology or Medicine: 2. The First Principle and Universality Class for Grid Cells in the Brain

Chalyi,

Zaitseva

et al. 2023

Ukr. J. Phys.

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“…Which is the difference between the membranes of sensitive and resistant cells? In attempting to answer this question, the quasielastic scattering of neutrons in the aqueous suspensions of both cell types was researched in works [7][8][9]. The corresponding experimental results are exhibited in Fig.…”

Section: Diffusion Of Water Molecules In Cell Membrane Suspensionsmentioning

confidence: 99%

Medical Physics: Molecular Aspects

et al. 2015

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Actual problems in medical physics have been considered. Features in the cell membrane structure promoting the action of anticancer drugs are studied. The mechanism of an invasive method for measuring the blood pressure is analyzed. The tension distribution in the left ventricle wall was calculated. Conditions that prevent magnetic particles, nanodiamonds, and fullerene molecules, which are used to transport drugs in human body, to aggregate in liquid systems are determined. A molecular mechanism of electric welding of biological tissues has been proposed, as well as a method to study the surface of biological structures, by using ultrasound. The origin of structural changes in human hair under the influence of chemicals is determined. K e y w o r d s: cellular membranes, arterial pressure, cardiac muscle tension, drug transport, electric welding of biological tissues.

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