Zobrazeno 1 - 10
of 13
pro vyhledávání: '"R. G. Semenova"'
Publikováno v:
Colloid Journal. 82:746-757
Ethoxy- and aminoderivatives of natural polymers, humic acids, have been obtained via mechanochemical synthesis in a vibrational apparatus. The structure and physicochemical properties of their macromolecules have been studied by IR and UV spectrosco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4a9c32e9cc63cd768fc784864ff8747
https://doi.org/10.1134/s1061933x2006006x
https://doi.org/10.1134/s1061933x2006006x
Publikováno v:
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, Iss 11, Pp 249-258 (2019)
The regularities of the formation of interfacial layers of nanosized natural polyelectrolytes based on humic substances and their complexes with cationic surfactants are investigated. It is shown that application of the dilatation rheology method mak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8ed951213b5900f2a7138a4e8f5bbd1
https://doi.org/10.26456/pcascnn/2019.11.249
https://doi.org/10.26456/pcascnn/2019.11.249
Publikováno v:
Colloid Journal. 81:779-789
The Du Nouy ring detachment and pendant drop methods have been employed to study the tensiometric (dynamic and equilibrium surface tensions) and surface rheological (viscoelasticity modulus and phase angle) characteristics of aqueous solutions of fra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fff51aa9450885b1516a2968e0a3274
https://doi.org/10.1134/s1061933x2001007x
https://doi.org/10.1134/s1061933x2001007x
Publikováno v:
Journal of Physics: Conference Series. 2052:012047
The reaction between succinic anhydride and 2-aminothiazole was carried out in polar organic solvents (acetone, 1,4-dioxane, isopropanol) and in a mechanochemical reactor. By of X-ray phase analysis, IR, 1H, 13C NMR spectroscopy it was found that in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85b54d3f073128ee809623d53a5ea048
https://doi.org/10.1088/1742-6596/2052/1/012047
https://doi.org/10.1088/1742-6596/2052/1/012047
Autor:
S. L. Khil’ko, R. G. Semenova
Publikováno v:
Solid Fuel Chemistry. 50:390-394
The use of natural polymers that form complexes with drug preparations is promising in the development of drugs of new generation. The possibility of complex formation on the interaction of humic acid salts with papaverine, benzohexonium, and B-group
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cacce7840fe7973459b00ea88bbed60e
https://doi.org/10.3103/s0361521916060057
https://doi.org/10.3103/s0361521916060057
Autor:
V. I. Rybachenko, S. L. Khil’ko, R. G. Semenova, O. V. Smirnova, V. S. Berezhnoi, I. V. Efimova
Publikováno v:
Solid Fuel Chemistry. 49:206-212
A method for the chemical modification of humic acids with benzoyl chloride under the conditions of phase-transfer catalysis was developed. It was demonstrated by potentiometric titration that the reaction of humic acids with benzoyl chloride can occ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::317365e119c0f6b34f4b277779924bf3
https://doi.org/10.3103/s0361521915040047
https://doi.org/10.3103/s0361521915040047
Publikováno v:
Russian Journal of Applied Chemistry. 84:708-712
Cationic polymerization of dicyclohexylpropane diglycidyl ether in the presence of boron trifluoride was studied with the aim to prepare hybrid coatings.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8179f201414e23a09ed740c5879d5137
https://doi.org/10.1134/s1070427211040264
https://doi.org/10.1134/s1070427211040264
Autor:
L. V. Grebenyuk, B. Leska, Grzegorz Schroeder, R. A. Makarova, K. Yu. Chotii, V. I. Rybachenko, R. G. Semenova
Publikováno v:
Theoretical and Experimental Chemistry. 33:118-122
The rate constants and activation energies were determined for a series of reactions involving the transfer of a dimethylcarbamoyl group from the N,N-dimethylcarbamoylonium salts of a series of nitrogen heterocycles and their N-oxides to nucleophiles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1571fbb97b21f7855edc7de7e16794c8
https://doi.org/10.1007/bf02765907
https://doi.org/10.1007/bf02765907
Publikováno v:
Theoretical and Experimental Chemistry. 31:73-76
A study has been mode of the reaction of acyl exchange between a series of N- or O-acyl salts and 4-(p-dimethylamino)styrylpyridine-N-oxide in acetonitrile solution. Values of the rate constant (k2) and activation characteristics (Ea, δG≠, δS≠,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63074bfaf85892f5d771a49bcf637a12
https://doi.org/10.1007/bf00529989
https://doi.org/10.1007/bf00529989
Publikováno v:
Journal of Applied Spectroscopy. 56:140-145
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ba2b10fc705f065b8764d2f84b100b3
https://doi.org/10.1007/bf00662266
https://doi.org/10.1007/bf00662266