Search

The technology of creating an ultrathin medical coating for biliary stents based on polyvinylpyrrolidone with the addition of doxorubicin and carbon nanotubes with unique sorption properties is proposed. The adding of carbon nanotubes leads to increasing of the resistance and prolonged action of the drug. [ABSTRACT FROM AUTHOR]

The results of theoretical calculations of the interaction process of the components of the drug coating of biliary stents-polyvinylpyrrolidone, carbon nanotubes, doxorubicin, performed using the quantum chemical method of MNDO. It is proved that such a complex is stable. [ABSTRACT FROM AUTHOR]

A simple method for applying superhydrophobic coatings based on carbon nano-onions obtained by a low-cost and technological synthesis method is proposed. The dependence of the hydrophobic properties of the coating on the application conditions, surface roughness and parameters of nanoobjects is analyzed. [ABSTRACT FROM AUTHOR]

The solid-state amorphization process was observed on Fe–3%Si–0.5%Cu alloy surface coated by MgO. The observation was performed using non-ambient x-ray diffraction analysis during continuous annealing at 600–1060 °C. Also, scanning electron microscopy was used with electron backscatter diffraction and electron microprobe analysis. The mechanism of amorphous phase formation was proposed based on the analysis of reactions between MgO, H2O (gas), H2, SiO2, Fe–3%Si (solid solution). The reactions occur at glass film formation during high-temperature annealing of Fe– 3%Si–0.5%Cu. The hydrogen reduces Mg2Si then it transfers into Fe(Si) solid solution with amorphization. [ABSTRACT FROM AUTHOR]

Emergence of bacterial infections in place of implant installation could provide some health and financial problems. One of the most promising method which could prevent disease is silver coatings applying on implants. Silver nanoparticles have a bacteriostatic and bactericidal effect however they are harmless for organism. In this work, we explored silver coatings with different thickness which were applying by pulsed ion-plasma method on the glass slide. The results are demonstrating non-linear dependence of antibacterial effect on the coat thickness. The most effective one is 750 nm thickness coat. [ABSTRACT FROM AUTHOR]