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Solar System Research - The paper is dedicated to the study of dust vortices on the Earth and Mars. The hydrodynamic similarity of convective vortices is considered, and the similarity criteria are... 相似文献
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Possible cavitation disintegration of polymineral microparticles placed into a liquid as a result of interaction of particles with collapsed cavitation bubbles is shown for the minerals most abundant in gold ore. The bubbles are generated by shock loading of the liquid heated to the boiling temperature. The possibility of cavitation separation of nano-and microscale monomineral fractions from polymineral microparticles is demonstrated. 相似文献
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Redistribution of dust particles in the ionosphere as a result of vortical motions is discussed. The following possibilities
are studied: capture and evolution of dust particles in acoustic-gravitational (AG) vortices, formation of dust vortices as
a result of involving a great number of dust particles into vortex motions, and formation of vertical dust flows (streamers).
It is shown that excitation of AG-vortices at altitudes of 110–130 km as a result of development of AG-wave instability, associated
with non-zero balance of heat fluxes, owing to solar radiation, water vapors condensation, infrared emission of the atmosphere,
and thermal conductivity, leads to a substantial transportation of dust particles and their mixing at altitudes of 110–120
km. Layers of dust particles in the ionosphere with a thickness of about a kilometer, forming at altitudes less than 120 km,
distribute within the region of existence of AG-vortical structures. As a result, at altitudes of 110–120 km, dust vortices
can appear, and transportation of particles up to altitudes of 130 km becomes possible. One of the ways of transportation
of dust particles in the ionosphere is vertical flows (streamers), which are generated by dust vortices as a result of development
of parametric instability. 相似文献
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V. V. Adushkin P. G. Weidler A. N. Dubovskoi L. M. Pernik S. I. Popel F. Friedrich 《Geology of Ore Deposits》2010,52(5):373-380
The properties of nano- and microparticles (60 nm-200 μm) of the dust formed by mass blasting in the iron ore open pit of
the Lebedinsky Mining and Concentrating Combine have been studied. Data on the morphology of particles, their magnetic properties,
mineralogy, and dimensions have been obtained. Quartz, magnetite, and mica were identified among these particles. The dust
mostly consisted of fragmented iron ore formation from the rock massif involved in the blasting. 相似文献
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V. V. Adushkin B. B. Chen S. I. Popel A. Yu. Dubinskii P. G. Weidler F. Friedrich 《Izvestiya Physics of the Solid Earth》2018,54(2):330-335
An experimental study of small-scale mineral particles in the atmosphere over Kyrgyzstan is carried out. It is shown that the substance of the studied particles corresponds to quartz-enriched minerals, feldspars, layered silicates, minerals containing lime carbonate, etc. Overall, there is a definite correspondence between the mineral particle compositions in the atmosphere of Kyrgyzstan and in the other regions of Central Asia. The constructed size-distribution functions of the particles agree with the results of studying the dust aerosol properties in the deserts of Central Asia obtained in the southwestern part of Tajikistan in 1989. 相似文献
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Solar System Research - We analyze the origin of dust particles in the near-surface layer of the Moon, the fluxes of which were measured in the Chang’e 3 lunar mission carried out by the... 相似文献
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Lunar Dust: Properties and Potential Hazards 总被引：1，自引：0，他引：1
Solar System Research - The surface of the Moon, like that of any airless body in the Solar System, constantly experiences micrometeorite bombardment as well as the influence of solar radiation,... 相似文献
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S.I. Popel 《Astrophysics and Space Science》1997,256(1-2):269-272
Nonlinear processes in lower-hybrid current drive and plasma heating are considered. An emphasis is made on the role of the modulational interactions. 相似文献
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