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Information × Registration Number 0212U000181, 0106U011303 , R & D reports Title Nature and mechanisms of nanostructures in silicates and phosphates connecting to the solution of mineralogical and medical-biological problems popup.stage_title Head Brik Alexandr Borisovich, Registration Date 20-01-2012 Organization M.P. Semenenko Institute of Geochemistry, mineralogy and Ore Formation popup.description2 Object of investigation - nanostructures in silicon dioxide, abiogenic and biogenic hydroxilapatite and zyrcon, chemical elements-admixtures and paramagnetic centres in minerals and biominerals. Aim - investigation of the properties of nanostructures in mineraks and biominerals, crystal-chemical features of natural silicated and biogenic phosphates for determination of theirs role in genesis of minerals and physiological processes in living organisms, and mechanisms of radiation-induced decay of crystal structures of minerals under autoradiation, for evaluation of theirs radioimmunoty over a long contact with highly active waste. Methods of investigation - electron paramagnetic resonance, nuclear magnetic resonance, mass-spectrometry, X-ray diffraction analysis, computer simulation technique. It was firstly shown using qurtz zonal crystal, that changing of concentration of aluminium, lithium and titanium reflect the temperature of quartz formation, but boron, phosphorus and germanium concentrations reflect composition of mineral-forming medium. It was shown by NMR, that water in precious opal is situated in nanosized globules as a free fluid, but in common opal it situated as adsorbed molecules at the amorphous silica surface. New data about water state in metamict zyrcon and its role in thers genesis were ontained. It was shown for natulas apatites from different rocks of Middle Pobug'a, that their crystal-chemical features reflects the processes of their formation. It was shown that by means of native radicals and carbonate radicals it is possible to study the processes of assimilation of implant material by living bone, and mechanisms of demineralization of bones in conditions of zero-gravity. Product Description popup.authors Багмут Микола Миколайович Брик Олександр Борисович Гречанівський Олексій Євгенович Дудченко Наталія Олександрівна Калініченко Анатолій Михайлович Калініченко Олена Анатоліївна popup.nrat_date 2020-04-02 Close