Energy spectrum in the force field of an electrostatic image

Moscow State University. Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 78, No. 1, pp. 109–115, January, 1989.     

Homopolycondensation of 1,3-dibromopropane-2-thione

Russian Journal of General Chemistry -     

Turbulent jet initiation of detonation in hydrogen-air mixtures

Large scale experiments (50 m³) have been carried out on the initiation of detonation by means of a jet of hot combustion products. The effects of hydrogen concentration (18–30% vol.), jet orifice diameter (100–400 mm), and the mixture composition in constant volume explosion chamber (25–50%) were investigated. Both high enough hydrogen concentration and large enough jet size are necessary for detonation initiation. The minimum values are within the ranges of 20 to 25% vol. H₂, and of 100 to 200 mm correspondingly. A minimum ratio of jet size and mixture cell width 12–13 is required for detonation initiation.     

Upper and lower functions of plane Brownian angles

One of the most rapidly growing fields in the theory of random processes is asymptotics of multidimensional Wiener functionals, including such functionals as winding angles or radius-vectors of planar processes. We present a new method yielding a large number of results on upper and lower functions for such functionals. Bibliography: 23 titles. Translated fromZapiski Nauchnykh Seminarov POMI, Vol. 228, 1996, pp. 111–134.