A. Yu. Sergeeva

  • Citations Per Year
Learn More
We present experimental observations of the hierarchy of rational breather solutions of the nonlinear Schrödinger equation (NLS) generated in a water wave tank. First, five breathers of the infinite hierarchy have been successfully generated, thus confirming the theoretical predictions of their existence. Breathers of orders higher than five appeared to be(More)
The rogue wave solutions (rational multibreathers) of the nonlinear Schrödinger equation (NLS) are tested in numerical simulations of weakly nonlinear and fully nonlinear hydrodynamic equations. Only the lowest order solutions from 1 to 5 are considered. A higher accuracy of wave propagation in space is reached using the modified NLS equation, also known as(More)
The effect of different concentrations of lead was investigated in two different ways in the leaves of Helianthus annuus plants. In the first way, removed leaf discs from 5-wceks old plants were floated in 0.05, 0.25, 2.50 and 5.00 mM PbNO3 solutions for 2, 4 and 6 days. In addition, the chlorophyll content and the activity of peroxidase enzyme which are(More)
A test system has been developed for rapid, simple, and reliable measurement of immunoglobulin E in umbilical blood in the range from 0 to 10 IU/ml with a sensitivity of 0.1 IU/ml. The system may be used for the detection of a predisposition to allergy at a very early age, allowing for timely measures to prevent allergic diseases.
The crystal structure of chromium(III) orthoborate, CrBO3, has been refined using the Rietveld analysis of X-ray powder diffraction data. The refinement procedure was stopped when the intensity residual RB = 3.58% had been reached. CrBO3 crystallizes in the rhombohedral structure type of calcite, space group R-3c (No. 167), with the lattice parameters (in(More)
  • 1