An Effect of Nickel Additives on Anode Behavior of Zinc-Aluminum Alloys Zn5Al,Zn55Al in NaCl Electrolyte

Russian Journal of Applied Chemistry - The results of studying the anodic behavior of Zn5Al, Zn55Al alloys doped with nickel in a NaCl electrolyte are presented. It was found that nickel additives...     

On Inversion Of Bessel Potentials Associated With The Laplace–Bessel Differential Operator

Explicit inversion formulas of Balakrishnan–Rubin type and a characterization of Bessel potentials associated with the Laplace–Bessel differential operator are obtained. As an auxiliary tool the B-metaharmonic semigroup is introduced and some of its properties are investigated.     

Preparation, crystal structure, and electrical properties of thallium monosulfide in the vicinity of high-temperature phase transitions

Single crystals of thallium monosulfide TlS with excess sulfur (4 at. %) are grown. The existence of monoclinic (of the TlGaSe₂ type), tetragonal ordered (of the TlS type), and subtetragonal phases of thallium monosulfide is revealed using x-ray powder diffraction. The temperature dependences of the electrical conductivity and permittivity of thallium monosulfide single crystals indicate that, in the temperature range 401–411 K, these crystals undergo a phase transition to a state with superionic conduction.     

Successive Minima and Best Simultaneous Diophantine Approximations

We study the problem of best approximations of a vector a ? \Bbb Rⁿ\alpha\in{\Bbb R}^n by rational vectors of a lattice L ì \Bbb Rⁿ\Lambda\subset{\Bbb R}^n whose common denominator is bounded. To this end we introduce successive minima for a periodic lattice structure and extend some classical results from geometry of numbers to this structure. This leads to bounds for the best approximation problem which generalize and improve former results.