Search Results - "Yarkova, T. A."

Thermodynamics of Gasification of Organic Matter of Brown Coal Using Oxidants of Various Compositions by Yarkova, T. A., Kairbekov, Zh. K., Eshova, Zh. T., Aubakirov, E. A., Kairbekov, A. Zh, Gyul’maliev, A. M.

“…The results of thermodynamic calculations of temperature dependence of the equilibrium composition of the products from gasification of brown coal from the…”
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Thermodynamic Characteristics of the Reactions of Formation of Iron and Magnesium Humates in Aqueous Solution by Yarkova, T. A., Gyul’maliev, A. M.

“…The thermodynamic stability of iron and magnesium ions at different acidity of an aqueous medium was determined using chemical thermodynamics methods and…”
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Theoretical Aspects of the Antioxidant Properties of Humic Acids by Yarkova, T. A., Gyul’maliev, A. M.

“…The energy characteristics of multistep sequential oxidation processes of the structural fragments of humic acids with oxygen-containing oxidants were…”
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Quantum-Chemical Modeling of the Interactions of IIA Group Metal Cations with Humic Acids by Yarkova, T. A., Gyul’maliev, A. M.

“…The thermodynamic characteristics of the reactions of the potassium salts of humic acids with IIA group metal cations were calculated using the PM6…”
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Quantum-Chemical Evaluation of the Energies of Solvation of Humic Substances in Various Solvents by Lapidus, A. L., Gyul’maliev, A. M., Zhagfarov, F. G., Yarkova, T. A.

“…The results of the DFT ( b 3 lyp / sto -3 g *) quantum-chemical calculations of solvation energies of humic substances in organic solvents and water based on a…”
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Quantum-Chemical Prediction of the Redox Properties of Humic Acids by Yarkova, T. A., Gyul’maliev, A. M.

“…A comparative analysis of the reactivity indices of the model structure of humic acids (HAs) and a number of antioxidants was carried out based on the results…”
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Erratum to: Quantum-Chemical Evaluation of the Energies of Solvation of Humic Substances in Various Solvents by Lapidus, A. L., Gyul’maliev, A. M., Zhagfarov, F. G., Yarkova, T. A.

“…An Erratum to this paper has been published: https://doi.org/10.3103/S0361521922330011…”
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Method for the Determination of the Average Structural Characteristics of Different Organic Substances by Yarkova, T. A., Gyul’maliev, A. M.

“…A method was developed for the calculation of the structural and chemical characteristics of organic substances of natural origin and their conversion products…”
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Determination of the Thermodynamic Functions of a Fraction of Primary Coal Tar by an Additive Method by Aitbekova, D. E., Baikenov, M. I., Balpanova, N. Zh, Tusipkhan, A., Baikenova, G. G., Yarkova, T. A., Gyul’maliev, A. M.

“…The calculated thermodynamic functions of a primary coal tar fraction with a final boiling point of 300°C were presented for the modeling of hydrogenation…”
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Synthetic diesel fuel produced from coal by Myltykbayeva, J. K., Yarkova, T. A., Gyul’maliev, A. M., Kairbekov, J. K., Mukhtali, D., Kadenbach, A. O.

“…The characteristics of synthetic diesel fuel are analyzed. The fuel consists of hydrocarbons C 3 –C 32 ; the content of the middle fractions is 83.26 wt %. The…”
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Synthesis of Benzoic Acid Esters and Their Antimicrobial Activity by Groza, N. V., Yarkova, T. A., Gessler, N. N., Rozumiy, A. V.

“…Esters with pronounced antimicrobial and antifungal activity were synthesized via acylation by benzoyl chloride of the natural hydroxyl-containing compounds…”
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Chemical modification of humic acids by the introduction of indole-containing fragments by Yarkova, T. A.

“…A method for the chemical modification of the initial structure of humic acids by acylation with indole-3-acetic acid chloride was developed to increase the…”
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Bromination of humic acids of different origin by Yarkova, T. A., Gyul’maliev, A. M.

“…Data on the introduction of bromine atoms into the structure of humic acids isolated from the peat of Tver oblast and the brown coal of the Moscow Basin were…”
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Enhancement of Biological Activity of Humic Acids by Hydrobromination by Lebedeva, G. F., Yarkova, T. A., Platonov, V. V., Proskuryakov, V. A., Chernysheva, N. I.

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Average structural model of humic acids of peat origin by Yarkova, T. A., Gyul’maliev, A. M.

“…Based on the data of the elemental, IR-spectroscopic, quantitative functional, and cryoscopic analyses of humic acids isolated from the peats of Tver oblast,…”
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Structure and properties of heavy organic residue from coal hydrogenation by Kairbekov, Zh. K., Gyulmaliev, A. M., Yarkova, T. A., Smagulova, N. T., Kairbekov, A. Zh

“…On the basis of elementary analysis and 13 C NMR spectroscopy, as well as the mean molecular mass and the degree of aromatic content, a structural model of…”
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Catalytic hydrogenation of Oi-Karagai coal by Kairbekov, Zh. K., Dzheldybaeva, I. M., Kairbekov, A. Zh, Yarkova, T. A., Gyul’maliev, A. M.

“…The hydrogenation of Oi-Karagai lignite (Kazakhstan) is investigated, with a view to its use in the production of motor fuel and other valuable chemical…”
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