351 research outputs found

    Boundary Between Stable and Unstable Regimes of Accretion

    Full text link
    We investigated the boundary between stable and unstable regimes of accretion and its dependence on different parameters. Simulations were performed using a "cubed sphere" code with high grid resolution (244 grid points in the azimuthal direction), which is twice as high as that used in our earlier studies. We chose a very low viscosity value, with alpha-parameter alpha=0.02. We observed from the simulations that the boundary strongly depends on the ratio between magnetospheric radius r_m (where the magnetic stress in the magnetosphere matches the matter stress in the disk) and corotation radius r_cor (where the Keplerian velocity in the disk is equal to the angular velocity of the star). For a small misalignment angle of the dipole field, Theta=5 degrees, accretion is unstable if r_cor/r_m>1.35, and is stable otherwise. In cases of a larger misalignment angle of the dipole, Theta=20 degrees, instability occurs at slightly larger values, r_cor/r_m>1.41.Comment: 4 pages, 4 figures, conference proceedings: "Physics at the Magnetospheric Boundary", Geneva, Switzerland, 25-28 June, 201

    FOUNDATIONS OF SELECTION OF INNOVATION STRATEGY FOR INDUSTRIAL COMPANIES IN RUSSIAN FEDERATION

    Get PDF
    The arguments proving the necessity of innovation way of development for Russian industrial companies are presented. Three main directions of forming strategies formation alongside circumstances affecting them are outlined. The main advantages and disadvantages of the suggested strategies are considered

    FOUNDATIONS OF SELECTION OF INNOVATION STRATEGY FOR INDUSTRIAL COMPANIES IN RUSSIAN FEDERATION

    Get PDF
    The arguments proving the necessity of innovation way of development for Russian industrial companies are presented. Three main directions of forming strategies formation alongside circumstances affecting them are outlined. The main advantages and disadvantages of the suggested strategies are considered

    MHD Simulations of Magnetospheric Accretion, Ejection and Plasma-field Interaction

    Full text link
    We review recent axisymmetric and three-dimensional (3D) magnetohydrodynamic (MHD) numerical simulations of magnetospheric accretion, plasma-field interaction and outflows from the disk-magnetosphere boundary.Comment: 11 pages, 8 figures, conference proceedings: "Physics at the Magnetospheric Boundary", Geneva, Switzerland, 25-28 June, 201

    2-aminoaethanesulfonic acid compounds possess protective property in reperfusion-induced heart jnjury

    Get PDF
    The study aim was to explore pharmacological effects of 2-aminoaethansulfonic acid compounds in reperfusion-induced heart injury. The study was performed on rats and dogs of both sexes, isolated rats’ hearts. Two compounds of 2-aminoethanesulfonic acid, magnesium-containing (LBK-527) and phenylacetamide-containing (LKhT-317) were investigate

    On mechanism of antiarrhythmic action of some dimethylphenylacetamide derivatives

    Get PDF
    The study aim was to identify essential elements of the antiarrhythmic action mechanism of tertiary and quaternary derivatives of Dimethylphenylacetamide. The study was conducted in albino rats and mice of both sexes; isolated neurons of mollusc Limnea stagnalis; and strips of rats’ right ventricle myocardium. Two compounds of Dimethylphenylacetamide LKhT- 3-00 and LKhT-12-02 were studie
    corecore