Andrei T Matveev

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Anisotropic penetration of magnetic flux in MgB(2) films grown on vicinal sapphire substrates is investigated using magneto-optical imaging. Regular penetration above 10 K proceeds more easily along the substrate surface steps, the anisotropy of the critical current being 6%. At lower temperatures the penetration occurs via abrupt dendritic avalanches that(More)
Nanoparticles (NPs) have a great potential as nanosized drug-delivery carriers. Such systems must safely deliver the drug to the site of the tumor without drug leakage, effectively penetrate inside cancer cells, and provide intracellular drug release. Herein we developed an original and simple method aimed at the fabrication of spherical boron nitride NPs(More)
A prolonged blockade of the brachial plexus by a subclavicular approach was performed in a 22-year-old patient with combined trauma and severe pain in the left arm. The administration of 20 ml of a 0.3% dicaine solution through a catheter led to spinal anesthesia accompanied by the development of transient hemodynamic and respiration disturbances, which(More)