Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Alexandra V. Stepanova"'
Publikováno v:
Minerals, Vol 13, Iss 10, p 1320 (2023)
The Yalguba Ridge volcanic rocks form part of the Middle Paleoproterozoic (ca. 1.97 Ga) volcano-sedimentary sequence within the Karelian Craton in the Fennoscandian Shield. Yalguba variolitic textures are known worldwide and have been previously cons
Externí odkaz:
https://doaj.org/article/4eac090f842c4dcb915f5bbd2e919031
Publikováno v:
Minerals, Vol 11, Iss 9, p 918 (2021)
The present study provides the first detailed investigation of black agates occurring in volcanic rocks of the Zaonega Formation within the Onega Basin (Karelian Craton, Fennoscandian Shield). Three characteristic texture types of black agates were i
Externí odkaz:
https://doaj.org/article/11cd288f1b7042ce808567a5ad0bb25c
Autor:
Roman V. Veselovskiy, Róbert Arató, Tanya E. Bagdasaryan, Alexander V. Samsonov, Alexandra V. Stepanova, Andrey A. Arzamastsev, Mariya S. Myshenkova
Publikováno v:
Minerals, Vol 10, Iss 12, p 1095 (2020)
For a long time, the thermal history of northeastern (NE) Fennoscandia in the Phanerozoic and Precambrian remained unknown, since no thermochronological studies were carried out within the Kola Peninsula area. Two years ago, we developed the first mo
Externí odkaz:
https://doaj.org/article/4412f70c46e74d44af4edb612c6cf5e5
Publikováno v:
Minerals, Vol 10, Iss 5, p 434 (2020)
This paper presents an integrated major and trace element data and crystal size distribution analysis for zoned clinopyroxene phenocrysts hosted in variolitic and massive picrobasalts of the Suisaari Formation, Karelian Craton, Eastern Fennoscandian
Externí odkaz:
https://doaj.org/article/8749f2d287c14369b2776cdb4494faab
Autor:
Marina Vladimirovna Shestakova, T. N. Kochegura, Alexandra V. Stepanova, Vsevolod A. Tkachuk, Konstantin Y. Kulebyakin
Publikováno v:
Annals of the Russian academy of medical sciences. 74:44-53
In the development of type 2 diabetes (T2D), an important role is played by a combination of environmental factors (hypodynamia, hypernutrition, etc.) and genetic variants that predispose the development of the disease. The contribution of inherited
Publikováno v:
Moscow University Chemistry Bulletin. 67:254-258
The chromatography behavior of a number of flavonoids is investigated, including quercetin, naringenin, chrysin, morin, rutin and naringin on the Luna 5u C18(2) column, and the conditions of their separation are established. The specific of retention
Publikováno v:
Talanta. 102
Sorption preconcentration of flavonoids quercetin, rutin, chrysin, morin, naringenin and naringin on polyurethane foam was investigated. Several parameters that could affect the preconcentration efficiency were evaluated. The preconcentration efficie