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10 results on '"Protsenko, B. O."'

3. Effect of the Hydride and Carbide Phases of Palladium Nanoparticles on the Vibration Frequencies of Adsorbed Surface Molecules.

Author

Usoltsev, O. A., Protsenko, B. O., Pnevskaya, A. Yu., Bulgakov, A. N., and Bugaev, A. L.

Subjects
*FREQUENCIES of oscillating systems, *PALLADIUM, *FACE centered cubic structure, *HYDRIDES, *SODIUM borohydride, *INTERATOMIC distances
Abstract

Palladium-based materials, including nanoparticles, are widely used in the petrochemical, pharmaceutical, automotive, and other industries. The hydride, carbide, and oxide phases of palladium formed during the hydrogenation or oxidation reactions of hydrocarbons significantly affect the catalytic properties of the catalyst. Based on theoretical calculations performed by the density functional theory (DFT) method, the effect of Pd–Pd interatomic distances and the presence of carbon atoms occupying octahedral voids in the fcc lattice of palladium on the vibrational frequencies of adsorbed hydrocarbons represented by ethylidene is shown. Theoretical research is supported by experimental data of infrared (IR) diffuse reflectance Fourier-transform spectroscopy (DRIFTS) collected in situ during the formation of carbide and hydride phases of palladium in commercial Pd/Al2O3 nanocatalyst under the influence of ethylene and hydrogen. The proposed approach can be used to develop new methods for IR spectra analysis leading to the quantitative diagnostics of structural changes in palladium during various catalytic reactions in the in situ mode. [ABSTRACT FROM AUTHOR]

Published
2023
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6. [Changes in protein spectrum of cattle blood serum with lympholeukosis].

Author

Radionov MT, Protsenko BO, Korotkoruchko VP, and Duzhans'kiĭ MG

Subjects
Animals, Cattle, Immunoglobulin G metabolism, Leukemia blood, Serum Albumin, Bovine metabolism, Serum Globulins metabolism, Time Factors, Blood Proteins metabolism, Cattle Diseases blood, Leukemia veterinary
Abstract

The protein spectrum of blood serum was studied in healthy cows and those suffering from leucosis. The total amount of protein at the early stages of the disease is established to be unchanged. But with lympholeucosis the content of the globulin fraction increases with a simultaneous decrease in the amount of albumins within 20%. The globulin fraction content rises due to immunoglobulin G. The albumin: globulins coefficient is 0.56 for animals with leucosis and 0.84 for the healthy ones. A problem on possible qualitative changes in this fraction similar to those occurring with other forms of malignant growth is under discussion.

Published
1977

7. [Structural peculiarities of protein typical of G-myelomas].

Author

Protsenko BO, Korotkorichko VP, Sen'ko LM, and Demchenko OP

Subjects
Animals, Circular Dichroism, Protein Conformation, Spectrophotometry, Ultraviolet, Immunoglobulin G metabolism, Multiple Myeloma metabolism, Myeloma Proteins metabolism
Abstract

G-myeloma protein is shown to differ by its conformation from the donor immunoglobulin G. It is characterized by a more polar surrounding of the molecule tyrosine and tryptophane residua. Under the effect of urea the changes are less considerable.

Published
1976

8. [Fab fragment of serum IgG in cancer patients].

Author

Protsenko BO, Cherniavs'kiĭ EI, and Korotkoruchko VP

Subjects
Humans, Immunoglobulin G, Papain pharmacology, Immunoglobulins, Neoplasms immunology, Precipitin Tests
Published
1972

9. Chromatographic separation and purification of undissolved protein from the serum of rabbits with Brown-Pearce carcinoma.

Author

Korotkoruchko VP and Protsenko BO

Subjects
Alpha-Globulins metabolism, Animals, Beta-Globulins metabolism, Blood Protein Electrophoresis, Chromatography, Gel, Chromatography, Ion Exchange, Peptides metabolism, Rabbits, Serum Albumin metabolism, Serum Globulins metabolism, Solubility, gamma-Globulins metabolism, Blood Proteins metabolism, Carcinoma, Brown-Pearce blood
Published
1966

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