Sorption capacity of acetylacetonated humin-like compounds with respect to cations of heavy metals

A method of synthesis of acetylacetonated humin-like compounds was developed. The effect of modification on the sorption capacity of humin-like compounds with respect to heavy metals was studied.     

Chemical compositions of extracts of organic matter of schungite rock form Zazhogino Deposit of Karelian Transonega region

The organic matter of schungite rock from the Zazhogino Deposit of Karelian Transonega region was extracted in the sequential mode. The extract composition was determined by several modern physicochemical methods.     

Structure of Asphaltene Compounds Formed by Homogeneous Pyrolysis of 2-Naphthol

The structure of asphaltene compounds formed by homogeneous pyrolysis of 2-naphthol was studied.     

Chemical Modification of Peat Humic Acids To Increase Their Bioactivity

The possibility of chemical modification of peat humic acids in order to increase their bioactivity by reduction with tin(II) chloride and sodium borohydride and also by carboxylation using the Kolbe method was analyzed.     

A method for improving the adhesion strength of UV-curable polymer compositions to metal

A method for improving the adhesion strength of UV-curable polymer compositions to metal is suggested that is based on the production of an adhesion layer at a metal surface, which is able to undergo polymerization with the components of the applied composition under the action of UV irradiation.     

Bismuth(V) Oxide and Silver Bismuthate as Oxidizing Agents for Gas-Chromatographic Elemental Microanalysis

Bismuth(V) oxide, silver bismuthate, and a mixture of bismuth(V) oxide with fine silver powder were studied as oxidizing additives in gas-chromatographic elemental microanalysis of readily combustible organic substances and coal.     

Magnetoresistance of a 2D electron gas caused by electron interactions in the transition from the diffusive to the ballistic regime

On a high-mobility 2D electron gas we have observed, in strong magnetic fields (omega(c)tau>1), a parabolic negative magnetoresistance caused by electron-electron interactions in the regime of k(B)Ttau/ variant Planck's over 2pi approximately 1, which is the transition from the diffusive to the ballistic regime. From the temperature dependence of this magnetoresistance the interaction correction to the conductivity deltasigma(ee)(xx)(T) is obtained in the situation of a long-range fluctuation potential and strong magnetic field. The results are compared with predictions of the new theory of interaction-induced magnetoresistance.     

Mechanism of Cyclohexane Ozonolysis Considering Alternative Pathways

Ozonolysis of cyclohexane was considered taking into account the alternative pathway of recombination of peroxy radicals to form cyclohexanol and cyclohexanone. The rate constants of the reactions involved were determined experimentally or by calculations (optimization of the process model).