Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Anna A. Shipovskaya"'
Autor:
Anna B. Shipovskaya, Olga S. Ushakova, Sergei S. Volchkov, Xenia M. Shipenok, Sergei L. Shmakov, Natalia O. Gegel, Andrey M. Burov
Publikováno v:
Gels, Vol 10, Iss 7, p 427 (2024)
A comprehensive study was performed on the supramolecular ordering and optical properties of thin nanostructured glycerohydrogel sol-gel plates based on chitosan L- and D-aspartate and their individual components in the X-ray, UV, visible, and IR ran
Externí odkaz:
https://doaj.org/article/c00863a55bef443d91d9055f3270070d
Autor:
Sergei L. Shmakov, Tatiana S. Babicheva, Valentina A. Kurochkina, Tatiana N. Lugovitskaya, Anna B. Shipovskaya
Publikováno v:
Gels, Vol 9, Iss 11, p 876 (2023)
For the first time, anisotropic hydrogel material with a highly oriented structure was obtained by the chemical reaction of polymer-analogous transformation of chitosan glycolate—chitosan base using triethanolamine (TEA) as a neutralizing reagent.
Externí odkaz:
https://doaj.org/article/8f278c86c5be404b80d4752f969b6441
Autor:
Natalia O. Gegel, Anna B. Shipovskaya, Zaur Yu. Khaptsev, Roman V. Radionov, Anastasia A. Belyaeva, Vitaly N. Kharlamov
Publikováno v:
Gels, Vol 8, Iss 2, p 93 (2022)
Mixtures of aqueous solutions of chitosan hydrochloride (CS·HCl, 1–4 wt.%) and Pluronic F-127 (Pl F-127, 25 wt.%) were studied using vibrational and rotational viscometry; the optimal aminopolysaccharide concentration (3 wt.%) and the CS·HCl:Pl F
Externí odkaz:
https://doaj.org/article/6f6348f08d8242b1a9b07ad43b17d1f1
Publikováno v:
Izvestiya of Saratov University. Chemistry. Biology. Ecology. 22:150-160
Unlike antibiotics and heavy metals, nucleic acids exist in the aquatic environment as a part of prokaryotic and eukaryotic microorganisms (bacteria, fungi, etc.) rather than in a free form. In this regard, the most important primary stage of sample
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb21a6c6d1511193b8e185fb52baf34d
https://doi.org/10.18500/1816-9775-2022-22-2-150-160
https://doi.org/10.18500/1816-9775-2022-22-2-150-160
Autor:
Svetlana M. Rogacheva, Elena V. Volkova, Milena I. Otradnova, Tamara I. Gubina, Anna B. Shipovskaya
Publikováno v:
International Journal of Optics, Vol 2018 (2018)
The effect of the solvent nature (acetonitrile, ethanol, dimethyl sulfoxide, and dioxane) and its concentration on the fluorescence intensity of pyrene sorbed on the cellulose diacetate (CDA) film from a water-organic solution was studied. Dimethyl s
Externí odkaz:
https://doaj.org/article/f6de070cdb2140feb4d64f09685f2c52
Publikováno v:
Russian Chemical Bulletin. 70:1765-1774
The study attests the effect of l- and d-diastereomers of ascorbic acid, which were used to prepare a salt form of chitosan, on the conformational features, structure, properties, supramolecular ordering, and biological activity of chitosan l- and d-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e96da51c521198fb60b6b1cc0f5f2bf
https://doi.org/10.1007/s11172-021-3281-5
https://doi.org/10.1007/s11172-021-3281-5
Publikováno v:
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology. 20:387-394
The results of the study of the morphology and surface topography of chitosan films of the salt (S-) and basic (B-) chemical form by atomic force microscopy are presented. The films were cast from polymer solutions in acetic, lactic, citric and succi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::082b1699a75b650a6b6e346c440635f6
https://doi.org/10.18500/1816-9775-2020-20-4-387-394
https://doi.org/10.18500/1816-9775-2020-20-4-387-394
Publikováno v:
Cellulose. 27:9285-9298
The physicochemical properties of 16 laboratory and 9 commercial samples of cellulose diacetate (CDA) of standard (3 wt%) and high (3.5–40 wt%) humidity, their solutions in acetone and an acetone–water mixture with component ratios of 95:5–99.5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d5d9eb6e5e5971b79938a71a1e94eaa
https://doi.org/10.1007/s10570-020-03439-5
https://doi.org/10.1007/s10570-020-03439-5
Publikováno v:
Izvestiya of Saratov University. New Series. Series: Chemistry. Biology. Ecology. 20:170-177
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::893d2d0c20096df6997b956b9573e7cd
https://doi.org/10.18500/1816-9775-2020-20-2-170-177
https://doi.org/10.18500/1816-9775-2020-20-2-170-177
Publikováno v:
Russian Journal of Applied Chemistry. 93:80-88
Conditions for obtaining L-aspartic acid solutions of chitosan were considered: dissolution of the polymer with the formation of chitosan aspartate occurs in pH range of 3.6–3.8 at a minimum stoichiometric ratio of [acid]/[chitosan (−NH2)] ∼ 0.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42a4f674135274089ae72701c4c66340
https://doi.org/10.1134/s1070427220010097
https://doi.org/10.1134/s1070427220010097