Acid-catalyzed reactions of thiocyanates with camphene

The reactions of thiocyanates with camphene catalyzed by the heteropoly acids H₃PW₁₂O₄₀ and H₄SiW₁₂O₄₀ were studied. The optimal reaction conditions were found, and the formation of N-substituted thiocarbamates in comparatively high yields was established. It was shown that the heteropoly acids exhibit a higher catalytic activity than sulfuric acid.     

Technology and tools for the rapid quality diagnostic and identification of liquids based on the electrophysical method of states

A new electrophysical method is proposed for liquid products rapid diagnosis of quality and identification. The method is widely prospective for practical application.     

Soliton dragging by dynamic optical lattices

We report on the phenomenon of controllable soliton dragging by dynamic optical lattices induced by three imbalanced interfering plane waves. Because of such an imbalance, the transverse momentum of the lattice does not vanish, and thus the dynamic lattice can cause soliton dragging. The dragging rate is shown to depend on the amplitude and on the angle of incidence of the third plane wave making the optical lattice.     

Integral-equation construction of the green's function for generalized boundary-value problems involving the heat-conduction equation

A method is proposed for constructing Green's functions for boundary-value problems involving the heat-conduction equation for a semiinfinite line with a uniformly moving boundary and for a line segment with boundaries in uniform and parallel motion.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, Vol. 12, No. 2, pp. 70–82, February, 1969.     

Highly selective BODIPY-based fluorescent probe for Zn2+ imaging in plant roots

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Kinetics of the thorough oxidation of traces of saturated hydrocarbons in air

Conclusions The kinetics of the thorough oxidation on a platinum-aluminum catalyst of small quantities of n-pentane, h-heptane, and n-nonane has been investigated. Under comparable conditions n-pentane is oxidized considerably more slowly than n-heptane and n-nonane. A kinetic equation has been found which describes the reaction rate in all the systems studied.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1728–1734, August, 1981.     

Convergence of difference additive functionals under local conditions on their characteristics

For additive functionals defined on a sequence of Markov chains that approximate a Markov process, we establish the convergence of functionals under the condition of local convergence of their characteristics (mathematical expectations).     

Stable surface solitons in truncated complex potentials

We show that surface solitons in the one-dimensional nonlinear Schr?dinger equation with truncated complex periodic potential can be stabilized by linear homogeneous losses, which are necessary to balance gain in the near-surface channel arising from the imaginary part of potential. Such solitons become stable attractors when the strength of homogeneous losses acquires values from a limited interval and they exist in focusing and defocusing media. The domains of stability of the surface solitons shrink with an increase in the amplitude of the imaginary part of complex potential.     

Vortex lattice solitons supported by localized gain

We show that localized gain supports the existence of dissipative vortex solitons in periodic Kerr media with strong two-photon absorption. Vortex solitons exist in both focusing and defocusing media, with their propagation constants emerging from semi-infinite or finite gaps in the lattice spectrum. Coincidence of the discrete rotational symmetries of the gain landscape and refractive index distribution is a necessary condition for exciting vortex solitons, which otherwise transform into stable dissipative multipoles.