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Analýza procesů elektromagnetické emise v živých buňkách pomocí grafů signálových toků
Šrobár, Fedor
Living cells contain polar macromolecules and higher aggregates such as microtubules. These perform mechanic vibrations and emit electromagnetic radiation. Fröhlich proposed kinetic equations for occupancy numbers of vibration modes. Signal flow graphs are employed to represent causal relationships in the model. Analytical apparatus associated with the diagrams affords quantitative characterization of the system’s behaviour. Results of numerical simulations are interpreted with regard to cell physiology.
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Abstract Book URSI International Symposium Endogenous Physical Fields in Biology
Pokorný, Jiří
Book of Abstracts contains 65 abstracts of papers whose majority was presented at the symposium "Endogenous Physical Field in Biology" whose program was focused mainly on: a/ Generation of the endogenous electromagnetic filed by cellular and subcellular protein structures /e.g.microtubules/, b/ Biophysical problems of interaction of biological systems with exogenous electromagnetic fields. Some new methods used in photodynamic and hyperthermic therapy of malignant tumors are described too.
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Endogení elektrické pole a organizace živé hmoty
Pokorný, Jiří ; Hašek, Jiří ; Jelínek, František
Endogenous electromagnetic field with strong electric component generated by polar structures, in particular by microtubular structures, has important function in charge and mass transport which conditions biological activity. The Wiener-Lévy process is used for analysis of the transport with deterministic and random (thermal) components whose ratio may be important for biological function. Electric field can have dominant effect on directed transport at short and medium distances up to about 0.1 µm.
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Fröhlichův systém s modulovaným přístupem ke zdroji energie
Šrobár, Fedor
Fröhlich model describes coherent vibration modes of polar intracellular entities (e.g. protein molecules or microtubules) that are pumped by ATP hydrolysis and exchange energy with the surroundings. Kinetic equations expressing time change of the quantum oscillator occupancy contain the pumping rate, and the rates of change due to linear and nonlinear interactions with the phonons of the reservoir. These are analyzed supposing that the modal pumping rate is a decreasing function of the mode occupancy.
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