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The article presents the results of investigations into the chemical composition, contents of selected rare earth elements and the reaction of eluates obtained from the waste (ash and slag) produced in the process of hard coal combustion in a pulverized-fuel boiler. Samples for tests were taken from the ash and slag landfill from three 10-metre vertical profiles. The total content of REEs in the examined ash-slags ranges from 295 to 366 mg/kg. The average concentration of rare earth elements is 330 mg/kg, with a s...

The purpose of the present study is to apply the new methods of multi-parametric analysis to moonquakes. It should be noted such physical phenomena as moonquakes are some kinds of complex systems. As the works in which analysis of moonquakes observations is conducted have shown, lunar seismophysics is much more complex process than Earth's geophysics. This is why to study the physical nature of moonquakes and their parameters it is necessary to use methods of statistical physics and robust estimates. Currently, th...