Бабаджанов П.Б., Кохирова Г.И. «Плотность и пористость метеороидов» Доклады академии наук республики Таджикистан, 49, № 6, с. 493-500 (2006)

According to the theory of quasi-continuous fragmentation and on the basis of light curves of meteors photographed in Tajikistan and Ukraine (Kiev and Odessa) the mean bulk and mineralogical densities of meteoroids belonging to nine meteoroid streams and the sporadic background have been determined. The bulk densities δ of meteoroids vary in the range from 0.4 g cm^–3 (Leonids) to 2.9 g cm^–3 (Geminids) (table). The mineralogical densities δ_m of meteoroids range from 2.2 to 3.4 g cm^–3, i.e. significantly greater than meteoroids bulk densities. This is indicative on the large porosity (to 83%) of meteoroids and their parent bodies - comets and asteroids.

Сакиев С.Н., Расулов С.Н., Лакаев А., Чориев Ф.С. «Акустическая эмиссия при термическом разложении монокристаллов и порошков» Доклады академии наук республики Таджикистан, 49, № 6, с. 521-526 (2006)

At the given paper, kinetics of an acoustic emission (AE) was investigated in decomposition of monocrystals of penthydrate copper (PHC) and model of tablets from the powder of ammonium carbonate (AK), by using equipments of last generation - two-channel Acoustic emission system PCI-2 PAC (Physical Acoustics Corporation). In both cases the intensity AE is stipulated by velocity of the germ and propagation of micro-cracks in samples PHC and AK, but the process AE in both of them flows variously, that is stipulated by topochemical character of decomposition of monocrystals PHC as against tablets of powder AK. It is shown, that AE method has a major perspective for study of the kinetics of decomposition both crystalline, and powdery materials. The major self descriptiveness of method AE were marked at study of topochemical reactions, where the identification of simple acoustic signals, will help with further to locate and stage thermodestruction of crystal.