Cytotoxicity of metal 8-quinolinethiolates

High cytotoxicity has been established for the 8-quinolinethiolates of copper, cadmium, indium, antimony, bismuth, ruthenium, rhodium, palladium, osmium, iridium, and platinum on HT-1080 (human fibrosarcoma), MG-22A (mouse hepatoma), and B-16 (mouse melanoma) tumor cells. The greatest activity against HT-1080 was possessed by the iridium complex, and against MG-22A by the osmium complex. All the investigated metal 8-quinolinethiolates were highly toxic in relation to NIH 3T3 normal mouse embryo fibroblasts. __________ Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 870–873, June, 2006.     

Results of the Further Analysis of Data from the Tien Shan Array in the Energy Spectrum of Primary Cosmic Rays in the Energy Range of $${2\times 10^{13}{-}3\times 10^{17}}$$ eV

Physics of Atomic Nuclei - The energy spectrum of primary cosmic rays at energies between 2 $$\times 10^{13}$$ and 3 $$\times 10^{17}$$ eV is presented according to data from the Tien Shan array on...     

A new phenylation reaction of benzophenone with phenyltrimethoxysilane

Conclusions The authors have discovered a new reaction: phenylation of benzophenone by phenyltrimethoxysilane with simultaneous reduction to triphenylmethane. The reaction mechanism is discussed.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1890–1892, August, 1968.     

The studies of the reaction of bismuth(III) with iodide at nanogram level by thermal lensing

By the example of the analytical system based on the reaction of bismuth with iodide, it is shown that thermal lens spectrometry can be used for studying changes in analytical reactions at the nanogram level of reactants. The stability constants of bismuth(III) iodides at the concentration level are found. The solubility constants of iodides of metals interfering with bismuth determination are estimated. It is shown that the due regard to the new conditions could enhance the sensitivity and selectivity of determination.     

Effect of the drilling mud filtrate temperature on the resistivity of the stratum saturated by oil and gas

A mathematical model of the axisymmetric distribution of the phases in the zone of invasion of the water-based drilling mud into the productive stratum whose porous space can simultaneously contain three immiscible fluids (oil, gas, and natural water) is constructed; the model takes into account the high rate of heat transfer between the fluids and the rock matrix. It is shown that the resistivity of the invaded zone depends not only on saturation of the latter by the fluids and the concentration of salts in the water phase, but also on the drilling mud filtrate temperature. It is also shown that there is a jump in the function of stratum saturation by oil on the thermal front.     

Silver-Containing Nanodispersions Based on the Water-Soluble Copolymer of N-Vinylpyrrolidone with Sodium N-Crotyl-4-aminosalicylate and Crotyl Alcohol: Synthesis and Spectroscopic,Structural, and Morphological Characteristics

Russian Journal of Applied Chemistry - Silver-containing nanocomposites based on N-vinylpyrrolidone–sodium N-crotyl-4-aminosalicylate–crotyl alcohol triple copolymer with the silver...     

On EAS spectrum with extremely low content of hadrons in the primary-energy range ∼10<Superscript>14</Superscript>−10<Superscript>15</Superscript> eV

The distribution of energy fluxes of the hadron component of extensive air showers through an ion-ization calorimeter in the primary-energy range ～3 × 10¹³?10¹⁶ eV is considered. Extensive air showers with zero and minimum energy fluxes of the hadron component are selected. It is concluded that the primary-energy range E ₀ ≈ 1 × 10¹⁴?2 × 10¹⁵ eV contains isotropic γ radiation with a spectrum close to bell-shaped, having a maximum near E ₀ ≈ 2.2 × 10¹⁴ eV and an additional peak near E ₀ ≈ 1.6 × 10¹⁵ eV.     

Properties of aqueous solutions of hydroxyethyl cellulose-poly(N-vinylformamide) blends and of the related composite films

The rheological properties of dilute and moderately concentrated aqueous solutions of hydroxyethyl cellulose-poly(N-vinylformamide) blends are studied. The stress-strain characteristics of the composite films are estimated. Dynamic mechanical analysis, the thermomechanical method, and the method of solvent-vapor sorption are used to determine the composition ranges of polymer compatibility and the temperatures of relaxation transitions in composite films. The structural organization of composite films is studied via X-ray diffraction analysis. The incorporation of one polymer into the matrix of another polymer entails changes in crystallization of the polymer dominating in the composite with respect to weight and causes an increase in the imperfectness of the crystal structure.     

Silver(I) Oxide on Silver–Zinc Alloys: Anodic Formation and Properties

Russian Journal of Electrochemistry - Anodic formation in deoxygenated 0.1 М KOH solution of Ag(I) oxide on Ag–Zn alloys with zinc atomic fraction from 5 to 30 at % and its properties...