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Information × Registration Number 0206U004985, 0101U006715 , R & D reports Title Development of new approaches for study of interaction mechanisms of mineral and organic matter in biological tissues popup.stage_title Head Brik Aleksander B., Registration Date 12-04-2006 Organization nstitute of Geochemistry, Mineralogy and Ore Formation popup.description2 Processes of a diffusion and mass-transfer in a mineral component of such biominerals as bones and tooth enamel have been investigated. For description of the processes we have introduced a number of new concepts, associated with construction and properties of biominerals. It is shown that biominerals are special mineral-organic nano-associated systems. The properties of the carbonate radicals of tooth enamel and of the precentres from which they are formed by irradiation were studied. The experiments were carried out using electron paramagnetic resonance (EPR), proton magnetic resonance (PMR), and electron-nuclear double resonance (ENDOR). Preliminary studies of the dynamic characteristics of free radicals, located in the organic component of biominerals was performed. It was shown that research in the dynamic characteristics of free radicals provides new opportunities for solving fundamental problems of biology and mineralogy, as well as practical problems associated with diseases of bones and teeth.Anomalous resonance signals in weakly mineralized biological tissues were studied by means of an EPR spectrometer. Various physical models that can explain the characteristics of the anamalous resonance signals are analyzed. It is shown that the narrow resonance signals in brain tissues are caused by exchange bounded paramagnetic centers, which are localized in nanoscale mineral particles. It is believe that physiological magnetic particles play an important role in operation of the brain, and pathological particles can be a cause of brain diseases.56355635 Product Description popup.authors popup.nrat_date 2020-04-02 Close