An approach to growth of Fe-Si multilayers with controlled composition profile-a way to exchange coupled thin films.

The growth, composition and structure of sandwich structures (Fe-rich layer/Si-rich layer/Fe-rich silicide layer) grown on a Si(111) surface were studied by a few complementary microscopic and spectroscopic techniques with high spatial resolution. Intermixing at the Fe/Si and Si/Fe interfaces is demonstrated. Fe-rich layers grown directly on the Si(111) surface are crystalline and have abrupt but rough interfaces at both sides. The succeeding layers are disordered and their interfaces are fuzzy. The distributions of Fe and Si within the layers are laterally non-uniform. The reproducible fabrication of thin non-magnetic silicide spacers of predetermined thickness is demonstrated. Sandwich structures with such spacers exhibit exchange coupling between ferromagnetic Fe-rich layers.

[Results of integrated tests of the facility to disinfect gaseous environment of orbital stations]. / Rezul'taty kompleksnykh ispytanii ustanovki dlia obezzarazhivaniia gazovoi sredy orbital'nykh stantsii.

The microbiological safety control with the use of the Potok 150M facility aboard operational orbital station of Mir series is discussed. The test results indicated that the facility does not actually influence the content of harmful microscopic admixtures in a gaseous medium of the mock-up compartments of the Mir orbital station, elevates slightly the noise level during operation and provides the highly effective purification of gaseous medium from dust and microorganisms. It allows us to conclude that an application of the Potok 150M facility aboard operational station shows promise.

[Laser in the prevention of early postoperative complications in the surgical treatment of obesity]. / Ispolzovanie lazera v profilaktike rannikh posleoperatsionnykh oslozhnenii pri khirurgicheskom lechenii ozhireniia.

The results of conduction of operative interventions in 37 patients with alimentary-costitutional obesity are adduced. In 22 of them having the obesity of III-IV stages the small stomach 100-150 ml in volume was constructed puuling in it too tight with a synthetic ribbon. In 1-1.5 years after the operation patient loses 70-80% of excessive body mass, and severe metabolic disturbances never occur. In 15 patients cutaneo-subcutaneous aprons on the abdomen were excised. Intravascular blood irradiation with the help of helium-neon laser for the prophylaxis of early postoperative complications occurrence was conducted. The stimulating action of laserotherapy on the cell and humoral immunity groups, alike central and peripheral hemodynamics improvement, moderate hypocoagulating and analgetic effect, lowering of the purulent-septical and thromboembolic complications in 1.5-2 times was noted.