Izvestiya of Saratov University. Chemistry. Biology. Ecology. 2023, Vol. 23, iss. 4
Content
Chemistry
Kutina A. A., Sumina E. G., Uglanova V. Z.
Comparison of two types of mobile phases for the determination of B vitamins by thin layer chromatography
370
Ketrush E. F., Mursalov R. K., Silaev D. V., Rusanova T. Y.
Spectrophotometric determination of some β-lactam antibiotics in their binary mixtures using the method of partial least squares
392
Mukhomodyarova D. M., Ibragimova D. K.
5-(1-Aryl-3-oxo-3-phenylpropyl)-2,2-dimethyl-1,3-dioxane-4,6-diones: synthesis and reactions with N-nucleophiles
404
Shipenok X. M., Shipovskaya A. B.
Structure and supramolecular ordering of chitosan L- and D-aspartates
411
Biology
Mokeev D. I., Telesheva E. M., Volokhina I. V., Yevstigneyeva S. S., Pylaev T. E., Petrova L. P., Filip’echeva Y. A., Shelud’ko A. V.
Genomic rearrangements aff ect the resistance of biofi lms of soil bacteria Azospirillum brasilense to abiotic stress
426
Kovrizhnikov E. V., Balykova A. N., Kukleva L. M., Naryshkina E. A., Fedorov A. V., Chervyakova N. S., Eroshenko G. A., Kutyrev V. V.
Molecular genetic analysis of Yersinia pestis strains isolated in diff erent epizootic periods on the territory of the Ural-Embensky desert natural plague focus area in the twentieth century
437
Buluktaev A. A.
Biological properties of soils of the "Nadedzhdinsky" and "Severo-Kamyshansky" oil fi elds located in the territory of the "Mekletsky" reserve
447
Filinкоva T. N.
Cytogenetic characteristics of species of the genus Chironomus of the group ‘‘plumosus’’ (Diptera, Chironomidae) in natural-territorial complexes of the Ural region
461
Solovyeva A. A., Lebedeva O. E., Thi Pham T.
Evaluation of activity of peroxidases contained in various plant sources
472