Controlled nanostructures formation on stainless steel by short laser pulses for products protection against falsification.

The coloration of stainless steel surface due to the formation of spatially periodic structures induced by laser pulses of nanosecond duration is demonstrated. The period of microstructures corresponds to the laser wavelength, and their orientation angle depends on the adjustment of laser polarization. The marking algorithm for the development of authentication patterns is presented.

[Objective method to recognize warning signs in peripheral vitreoretinal dystrophies].

Aim: to compare the effectiveness of biomicroscopy (BMS) and optical coherence tomography (OCT) in recognizing prognostically unfavorable signs in peripheral vitreoretinal dystrophy (PVRD) patients.

Material And Methods: A total of 131 cases of equatorial PVRD (91 eyes of 56 patients) were assessed. The mean patient's age was 24.

[A comparative study of Coxiella burnetii strains differing in virulence in the intratracheal infection of guinea pigs].

As found out in earlier investigations, after the intratracheal infection of guinea pigs with C. burnetii (the method of infection, most similar to aerogenic infection which is characteristic of Coxiella under natural conditions) the maximum amount of the infective agent is accumulated in the lungs of the animals, damaging the organs of the reticuloendothelial system. The present investigation has revealed that this method of infection makes it possible differentiate C.

[Preparation of hyperimmune horse serum against Ebola virus].

Immunization of horses with Ebola virus resulted in production of specific virus-neutralizing antibodies with their maximal level attained on days 28 to 42 postimmunization. Repeated cycles of immunization lead to increase of antibodies titer to 1:4096.