Growth dynamics and structural variations of a friable metal deposit during its contact deposition from aqueous solutions

A model is proposed for describing dynamics of contact exchange of metals, which takes into account the side process of hydrogen evolution. The contact exchange dynamics and structural characteristics of the deposit are considered as functions of the concentration of ions that undergo reduction in solution and the cementation EMF. The consideration makes allowance for different densities of microelements and the effect of the solution stirring by hydrogen evolving concurrently.     

On the solvability of a system of forward-backward linear equations with unbounded operator coefficients

An estimate of the norm of the Lagrange interpolation operator in the multidimensional weighted Sobolev space is obtained. It is shown that, under a certain choice of the sequence of multi-indices, the interpolating polynomials converge to the interpolated function and the rate of convergence is of the order of the best approximation of this function by algebraic polynomials in this space.     

On the processes upon the second-photon-stimulated annealing of InAs layers implanted with Be<Superscript>+</Superscript> ions

The results of the second-photon-stimulated annealing of beryllium-implanted InAs layers are presented. The hole and electron concentrations and the activation energy of second-photon-stimulated annealing are calculated for the characteristic temperature regions using thermopower voltage values measured for the implanted layer. The possible mechanisms of the annealing of radiation-induced defects and the activation of beryllium atoms are discussed.     

Formulas for Calculating the $ 3j $ -Symbols of the Representations of the Lie Algebra $ {\mathfrak{gl}}_{3} $ for the Gelfand–Tsetlin Bases

Siberian Mathematical Journal - We give a&nbsp;simple explicit formula for an&nbsp;arbitrary $ 3j $ -symbol for the Lie algebra&nbsp; $ {\mathfrak{gl}}_{3} $ . The&nbsp;symbol is...     

Nanoemulsions and Nanocapsules with Oleic Acid

Colloid Journal - Nanoemulsions are promising disperse systems that can be used as carriers of hydrophobic drugs and biologically active compounds. In this work, nanoemulsions, which contain oleic...     

Generation of wave process in the Belousov-Zhabotinsky reaction by a 30-MeV collimated electron beam

The generation of leading centers in the Belousov-Zhabotinsky reaction by a 30-MeV collimated electron beam has been investigated. The center generation threshold is estimated to be 2.0 ± 0.5 kGy.     

Thermodynamic Evaluation of Non-Equilibrium Compositions and Activity of Multicomponent Catalysts in Redox Reactions

The analysis of structural state and energetic properties of active catalyst component in oxide copper-containing catalytic system has been performed on the basis of comparing the data of thermochemical, X-ray diffraction and catalytic activity determinations. The analysis of thermochemical data obtained makes it possible to evaluate changes in lattice energy and the nearest coordination sphere energetic parameters of copper cations during the formation of solid solutions. The high degree of correlation of catalytic properties and the formation enthalpy of solid solutions can be explained by the fact that alongside with the factors influencing the catalytic activity it is the strength of cation—cation interaction that is the most important.This revised version was published online in November 2005 with corrections to the Cover Date.     

Registration of accelerated multiply charged ions from the cathode jet of a vacuum discharge

The parameters of Cuⁿ⁺ and Taⁿ⁺ ions from the plasma of a vacuum spark with a voltage up to 2.5 kV and a current rise rate up to 2 × 10¹⁰ A/s are studied using the time-of-flight method. At the initial stage of the discharge, bursts of beams of accelerated multiply charged ions from the cathode flame have been detected. It is established that the charge state distribution and energy of a beam are controlled by the initial voltage U ₀ of the capacitor. Upon an increase in this voltage, the average charge of copper ions attains the value +9, and the average charge of tantalum ions can be as high as +20, while the energy attains values of 150 and 350 keV, respectively. It is found that the average energy of ions with charge Z increases in proportion to the charge and is close to the energy eZU ₀ which would have been acquired by ions accelerated in the electric field of the discharge gap.     

Influence of 30-MeV α-particle beams on wave propagation in the Belousov-Zhabotinsky reaction

The generation of leading centers in the Belousov-Zhabotinsky reaction under the action of collimated radiation with a high linear energy transfer has been investigated. To get insight into the mechanism of the effect of radiation on the Belousov-Zhabotinsky reaction, the radicalator model was modified to involve the interaction of the reactants with the ^•OH radical produced by water radiolysis.