Ultrashort relativistically strong solitons in plasma

An equation that describes a reflectionless propagation of non-one-dimensional relativistically strong wave packets in plasma has been studied. A family of three-dimensional solitons is found and their stability is analytically justified. The dynamics of soliton formation and their interactions have been numerically simulated.     

Synthesis, structure, and biological activity of the cis-[4-amino-2,2,6,6-tetramethylpiperidine-N,N′]dichloropalladium(ii) complex

A previously unknown palladium complex was synthesized by the reaction of 4-amino-2,2,6,6-tetramethylpiperidine with PdCl₂. The X-ray diffraction study showed that the complex formed by 4-amino-2,2,6,6-tetramethylpiperidine with PdCl₂ is a chelate, in which the bidentate ligand adopts a boat conformation with the nitrogen atoms occupying cis positions at the palladium atom. The resulting cis-[4-amino-2,2,6,6-tetramethylpiperidine-N,N′]dichloro-palladium(ii) complex exhibits strong antimetastatic activity against experimental B16 melanoma at moderate toxicity.     

Minimum working temperature of cells with oxide solid electrolyte

Thermal e.m.f. method was used to estimate minimum working temperature of Pt, Pd, Ni, Ag, and Au electrodes for solid electrolyte ZrO₂ + Y₂O₃ cells in gaseous mixtures He + O₂, Co + Co₂, H₂ + H₂O over a temperature range of 1070-400 K.     

Kinetic model ofCO oxidation on a nonuniform surface analyzed with regard toCOads spillover, III. Homotopic method. Effect of the reaction mixture composition

Homotopic method has been used to analyze the kinetic model of three-stageCO oxidation on two nonuniform surface patches conjugated byCO _ads spillover. The diagrams of steady states depending onP(CO) at various temperatures have been built.CO _ads spillover from one patch to another changes substantially the bifurcation picture of the steady states.     

Mathematical modeling of matter distribution in a circular cell ensemble

In this paper, a mathematical model describing substance transport in a circular cell ensemble is considered. The model is represented by an autonomous system of equations. With a parameter continuation model, it is shown that the stationary solutions may have various symmetry types represented by closed curves. The periodic solutions have the same property, where the components differ from each other by a simple shift.     

Iodine-starch clathrate complexes under the impact of a low-frequency acoustic field

The results from research on the kinetics of destruction of clathrate complexes (amyloidine, amylopectoiodine and iodinol) in low-frequency acoustic waves from 5 to 25 Hz are presented. Features of the transfer of energy from low-frequency acoustic oscillations are determined. The ability of systems containing biologically active clathrate structures to interact in resonance with external acoustic stimuli according to the energy state of the active part of iodine-containing compexes is confirmed. In the first approximation, such compounds can be regarded as model biochemical systems.