Zobrazeno 1 - 10
of 46
pro vyhledávání: '"D. K. Buslov"'
Publikováno v:
Polymer Science Series A. 53:1121-1127
A system of hydrogen bonds in weakly hydrated PVA films containing up to ≤8.5 wt % water is investigated via IR spectroscopy. It is shown that water molecules bind to only part of the hydroxyl groups of the polymer that are available for hydration
Infrared spectra of brassinolide and castasterone steroid phytohormones and their 24-epi derivatives
Autor:
D. K. Buslov, N. A. Borisevich
Publikováno v:
Journal of Applied Spectroscopy. 77:491-495
Absorption bands in IR spectra of brassinolide, castasterone, and their 24-epi derivatives in the frequency range 3800-1000 cm -1 have been interpreted. A number of spectral features distinguishing brassinolide from castasterone have been found. The
Autor:
L. V. Solov’eva, O. V. Zubets, L. V. Larchenko, V. I. Torgashev, F. N. Kaputski, N. I. Sushko, D. K. Buslov, V. M. Tsarenkov
Publikováno v:
Journal of Applied Spectroscopy. 76:801-805
Structural features of a number of xylan types (Sigma, Fluka) and that extracted by us from birch wood (BW) have been determined using IR transmission spectroscopy and elemental analysis. The calculated molecular formulas of Sigma and Fluka xylans ar
Publikováno v:
Journal of Applied Spectroscopy. 76:617-622
IR spectra of steroid phytohormones of the stigmastane series (22R, 23R)-28-homocastasterone and (22R,23R)-28-homosecasterol and their isomers (22S,23S)-28-homocastasterone and (22S,23S)-28-homosecasterol have been analyzed. The 28-homocastasterone m
Publikováno v:
Journal of Applied Spectroscopy. 75:637-643
Comparative analysis of IR spectra of S-and R-isomers differing in the configuration of OH groups in the side chain of biologically active 24-epi-and 28-homocastasterones and 24-epi-and 28-homobrassinolides is carried out. Stretching vibration freque
Publikováno v:
Journal of Applied Spectroscopy. 75:514-518
Thermal gelation of methylcellulose in water was studied using FTIR-ATR spectroscopy. It is found that the formation of a three-dimensional network of physical cross-links between macromolecules of methylcellulose on gelation occurs not only as the r
Publikováno v:
Journal of Molecular Structure. 752:20-24
Manifestation of stretching vibrations of glycosidic linkage in the infrared spectra of polysaccharides (native, microcrystalline, mercerized celluloses, amylose, starches) has been studied using the regularized method of deconvolution. It has been s
Autor:
N. A. Nikonenko, Jakub Baran, D. K. Buslov, Mariusz K. Marchewka, V. M. Andrianov, Nataliya I. Sushko, V.A. Bondar, V.V. Kazantsev, R. G. Zhbankov, Henryk Ratajczak, S. G. Kirillova
Publikováno v:
Journal of Molecular Structure. 706:133-139
For the first time, complex study of the structure of practically important water soluble derivatives of cellulose and starch (carboxy methyl, hydroxy ethyl ethers) with the use of coupled calculations of conformations and vibrational spectra, FTIR a
Publikováno v:
Russian Chemical Bulletin. 52:1280-1288
The IR spectra and densities of MeOH—HF liquid mixtures were measured for component molar ratios ranging from 12 : 1 to 1 : 3. The IR spectra of all of the solutions exhibit bands with maxima at 3500, 2600, and 1800 cm–1 and continuous absorption
Autor:
D. K. Buslov, N. A. Nikonenko, S. P. Firsov, Mariusz K. Marchewka, R. G. Zhbankov, Henryk Ratajczak
Publikováno v:
Journal of Molecular Structure. 614:117-125
By the methods of Fourier transform infrared and Raman spectroscopy and theoretical conformational analysis, the conformational peculiarities of macromolecules of cellulose of various structural modifications have been studied. It has been shown that