Розроблено математичний апарат для визначення напруженості електростатичних полів у багатошарових наночастинках. Це дає можливість визначити енергію, яка виділяється при дії лазерного випромінювання і може бути використано для лікування онкологічних захворювань.

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Abstract. In the paper is described and destabilized a process of near Earth asteroids (NEA) semi-major axes distributions analysis by investigation of corresponding series in a frequency domain. Such study allows getting a new knowledge about fine structure of orbits distributions and makes possible to find out new phenomena (e.g. presence of periodic components or some resonance structure) in these distributions. Versatile investigation of NEA's orbits distributions fine structure allows testing some theories and hypotheses according to which these distributions should have a certain structure. In order to reach the goal of investigation following subtasks have been solved: 1) orbits set transformation to a discrete signal (frequency histograms); 2) series trend estimation and removing; 3) frequency analysis. As a result of the investigation a presence of a harmonic component in distributions of NEA's semi-major axes has been found.