[en] Sm-Nd-isotopic-geochronologic data are obtained on the time of formation of metamorphic paragenesis of minerals sampled from four kimberlites in Yakutia. It is shown that the studied complex of rocks mainly corresponds to plagiogneisses of average composition in terms of mineral associations, chemical composition and metamorphism parameters. The ancient estimates of Nd-model age of xemolites (2.9-3.3 billion years) are comparable with those of metadeposits of the Daldyn series of the Anabar shield

[en] Unstability of argon (⁴⁰Ar/³⁸Ar) and carbon isotope ratio of CO₂ and CH₄ in gases carried out from opened well (the depth is 1000 m) on surface with mineral water, is considered in detail. The well is laid on Gelli-Paraul region hopeless to petroleum and gas

[en] Construction of consistent asymptotics of Schroedinger equation was conducted. The equation solution was derived with the use of a new method, enabling to perform expansions in terms of 1/N powers

[en] Results of X-ray diffraction analysis of mixed-valence tetranuclear vanadium (V², V³) complex, isolated from nitrogen fixing system are given. Crystals of mixed-valence vanadium (V², V³) complex are monoclinic, at 140 K: a = 16.748(7), b 16.959(8), c = 21.764(9) A, β = 109.53(3) deg, V = 5655(2) A, Z = 2, sp.gr.P 21/n

[en] A study was made on the effect of alloying type of Fe-P alloys on peculiarities of structural transformations in amorphous alloys (AA) of Fe-P-Mn, Fe-P-Si ternary systems and Fe-P-Mn-V quaternary system. It is shown that character of phase equilibrium in Fe-P-M systems can change the degree of alloying element effect on phosphorus segregation in alloys with formation of various metastable phases with phosphorus participation processes of alloying element redistribution, taking place in surface AA layers, lead to formation of one or another metastable phase with higher phosphorus content, as compared to equilibrium phases

[en] A study was made on the influence of effective electron acceptor-oxopiperidine cation, immobilized of the surface of micelle anion surfactants, on luminescence quenching of tristipyridyl ruthenium complex. It was revealed that this method enabled to determine reliably the critical concentration of micelle formation of anion surfactants

[en] The diffusion of labelled oxygen (O¹⁸) atoms in Bi₂Sr₂CaCu₂O₈ high-tc superconductors was studied. The temperature dependences (494-573 K) of oxygen atom diffusion coefficients in polycrystalline Bi₂Sr₂CaCu₂O₈ and YBa₂Cu₃O_7-δ were given. An universal character of the diffusion mechanism in high-tc superconductors with quasi-plane structure was noted

[en] Kinetic and stationary methods were used to study luminescence quenching of trisbipiridine ruthenium complex in aqueous-micellar solution of cetyltrimethylammonium bromide by several quenchers of different hydrophilic-lipophilic nature. 13 refs., 2 figs., 2 tabs

[en] Equations permitting evaluation of metal-hydrogen binding energy for metals with dose-packed and body-centered crystal lattices on the basis of the L. Pauling ratio were suggested. The values of metal crystal lattice energy (E_cr) and difference in the values of hydrogen and metal electronegativity are used in the calculations. The equations derived also permit evaluating electrochemical characteristics of the metals, equilibrium potential of hydrogen ion discharge on metal, as regards hydrogen electrode, and potential of zero charge as E_cr function, in particular. A satisfactory agreement between calculated and experimental data suggests correctness of the equations mentioned

[en] Palladium-catalyzed arylation of water-soluble olefins by arylhalides (Heck reaction) is described. Styrene reacts with aryliodides at 100 deg in Na₂CO₃ or K₂CO₃ aqueous solution during Pd(OAc)₂ catalysis in the presence of small amount of Bu₃N with formation of substituted stilbenes