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Design of Piezoelectric Gravimeter for Automated Aviation Gravimetric System

Korobiichuk I., Bezvesilna O., Tkachuk A., Chilchenko T., Nowicki M., Szewczyk R.

Journal of Automation Mobile Robotics and Intelligent Systems

2016

Vol. 10, No. 1

43--47

The article presents and describes the structure of a new piezoelectric gravimeter of automated aviation gravimetric system (AGS), which has a higher accuracy (1mGal) than other types of gravimeters known to date and automated signal processing. It also describes the operation principle of a piezoelectric gravimeter and presents its mathematical model. There have been determined conditions under which the need to use lowpass filter in automated AGS is prevented.

Single Crystal Investigation of Tb3Cu4Sn4 and Dy3Cu4Sn4 Stannides with Gd3Cu4Ge4-type Structure

Romaka V., Pavlyuk V., Marciniak B., Tkachuk A.

Polish Journal of Chemistry

2008

Vol. 82, nr 11

2049-2055

The crystal structure of the R3Cu4Sn4 ternary stannides (R = Tb and Dy) was determined by single crystal X-ray diffraction method. Both investigated compounds crystallize in the Gd3Cu4Ge4 structure type (space group Immm). The detailed structure analysis defined the "tolerance" ranges of the atomic radii for the rare-earth element in all R3Cu4Sn4 compounds and predicted the possibility of existence of the Lu3Cu4Sn4 stannide.