Zobrazeno 1 - 10
of 13
pro vyhledávání: '"A. N. Veleshko"'
Autor:
Nikolay V. Pal, Vera K. Ozhogina, Ekaterina V. Rumyantseva, A. N. Veleshko, Natalia R. Kil’deeva
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 318:2227-2233
The physicochemical properties of fine fiber materials Eudragit® [amine-containing methylbutyl methacrylate copolymer Eudragit E (Ed-E) and quaternary salt dimethylaminoethyl methacrylate quaternary salt copolymer Eudragit RS (Ed-RS)] were studied i
Publikováno v:
Fibre Chemistry. 51:247-249
The reaction of uranyl ion with Eudragit® copolymers was studied. The solution composition was shown to affect the uranium extraction efficiency by the examined polymers. Spectral data confirmed the formation of stable compounds of uranyl ion with E
Autor:
M. G. Drozdova, A. N. Veleshko, A. N. Sonina, E. A. Markvicheva, L. S. Gal′braikh, I. E. Veleshko, G. A. Vikhoreva
Publikováno v:
Fibre Chemistry. 45:79-84
Nanofibrous material was prepared by needle-free electrospinning from a mixture of chitosan and polyvinyl alcohol of equal masses. The conditions for converting it to an insoluble form by heat treatment were studied. The effectiveness of using chitos
Autor:
E. V. Rumyantseva, A. N. Veleshko, N. A. Budantseva, I. E. Veleshko, L. S. Gal'braikh, N. V. Sushinskaya
Publikováno v:
Fibre Chemistry. 44:83-89
Co-precipitation of 233UO2 2+, 152Eu3+, and 90Sr2+ on melanin isolated from the preparation Mikoton, a chitin—melanin glucan complex, was studied in solutions. It was shown that the degree of coprecipitation (α) of the radionuclides depended on th
Autor:
Yu. A. Teterin, E. V. Rumyantseva, A. Yu. Teterin, A. N. Veleshko, Kirill E. Ivanov, A. N. Levov, V. P. Varlamov, I. E. Veleshko, Konstantin I. Maslakov
Publikováno v:
Radiochemistry. 54:122-127
Interaction of uranium with low-molecular-weight sulfosuccinyl chitosan (SSLMWC) from sulfate solutions was studied by X-ray photoelectron spectroscopy. The interaction involves formation of complexes with the uranyl group on the SSLMWC surface. The
Autor:
A. N. Veleshko, N. R. Kil’deeva, V. I. Lozinskii, R. V. Ivanov, L. S. Gal'braikh, Sergey N. Mikhailov, V. V. Nikonorov, E. V. Rumyantseva, I. E. Veleshko
Publikováno v:
Fibre Chemistry. 42:364-369
The efficacy of using chitosan cryogel modified with pyridoxal-5´-phosphate for extraction of 152,154Eu(III) from aqueous solutions was established. Enhancement of the sorption properties of CCTZ-PP in comparison to CCTZ is due to the possibility of
Publikováno v:
Radiochemistry. 51:490-495
New derivatives of low- and high-molecular-weight chitosan (LMWC and HMWC), containing various functional groups, were prepared. The solubility of the compounds in aqueous solutions at pH 1–10 and the sorption and complexation of radionuclides with
Publikováno v:
Radiochemistry. 51:484-489
Coprecipitation of 233U, 239Pu, 241Am, 152Eu, 90Sr, 90Y, and 60Co on chitosans of various molecular weights (MW) was studied. Low-molecular-weight chitosan (LMWC) with MW of 5 kDa (5 × 103 g mol−1) proved to be a more effective coprecipitant than
Autor:
I. E. Veleshko, A. N. Veleshko, D. S. Shaitura, E. V. Rumyantseva, S. A. Kulyukhin, N. A. Dmitrieva, K. V. Rozanov
Publikováno v:
Radiochemistry. 51:496-501
A composite sorbent based on spherically granulated chitosan modified with a mixed ferrocyanide K2Cu3[Fe(CN6)]2 (SGC-FC) was prepared. The sorbent is highly effective toward 137Cs. The physicochemical parameters of 137Cs+ sorption by this sorbent wer
Autor:
A. G. Domantovskii, K. V. Rozanov, A. N. Veleshko, I. E. Veleshko, S. A. Kulyukhin, I. A. Kislova
Publikováno v:
Radiochemistry. 50:508-514
Composite sorbents based on Mikoton natural biopolymer, selective to 90Sr, were prepared, and features of 90Sr sorption with these sorbents were discussed. The inorganic compound used as modifier is deposited on the surface of fibers of Mikoton biopo