29 research outputs found

    Dependence of Chemical Etching rate of PTR-glasses on Terms of Photo-thermo-induced Crystallization

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    Etching kinetics of virgin photo-thermo-refractive glass and glassceramics (after photo-thermo-induced crystallization process at various terms) in aqueous hydrofluoric acid based solution has been investigated for the first time. It has been shown that the etching rate of the glassceramic is increasing with increasing of nanocrystalls number and size. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3540

    ATLAS detector and physics performance: Technical Design Report, 1

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    Synthesis of furyl-, furylvinyl-, thienyl-, pyrrolinylquinazolines and isoindolo[2,1-a]quinazolines

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    A method for the synthesis of hydrogenated furyl-, furylvinyl-, thienyl-, and pyrrolinyl-substituted quinazolin-4-ones was developed. A possibility of the reaction of 2-furylquinazolines with maleic anhydride was demonstrated. A number of quinazolines obtained were subjected to a primary bioscreening on inhibition of acetylcholinesterase. © 2015 Springer Science+Business Media New York

    Synthesis of furyl-, furylvinyl-, thienyl-, pyrrolinylquinazolines and isoindolo[2,1-a]quinazolines

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    A method for the synthesis of hydrogenated furyl-, furylvinyl-, thienyl-, and pyrrolinyl-substituted quinazolin-4-ones was developed. A possibility of the reaction of 2-furylquinazolines with maleic anhydride was demonstrated. A number of quinazolines obtained were subjected to a primary bioscreening on inhibition of acetylcholinesterase. © 2015 Springer Science+Business Media New York

    First-principles calculations of crystal field effects and absorption spectra for 3d ions in laser crystals

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    Holocene Faunal Trends in West Siberia and Their Causes

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    Mouse Chromosome 14

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    Mouse chromosome 14.

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    Cosmic ray production in supernovae

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    International audienceWe give a brief review of the origin and acceleration of cosmic rays (CRs), emphasizing the production of CRs at different stages of supernova evolution by the first-order Fermi shock acceleration mechanism. We suggest that supernovae with trans-relativistic outflows, despite being rather rare, may accelerate CRs to energies above 10^{18}\mbox{ eV} over the first year of their evolution. Supernovae in young compact clusters of massive stars, and interaction powered superluminous supernovae, may accelerate CRs well above the PeV regime. We discuss the acceleration of the bulk of the galactic CRs in isolated supernova remnants and re-acceleration of escaped CRs by the multiple shocks present in superbubbles produced by associations of OB stars. The effects of magnetic field amplification by CR driven instabilities, as well as superdiffusive CR transport, are discussed for nonthermal radiation produced by nonlinear shocks of all speeds including trans-relativistic ones
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