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  1. No Access

    Article

    Impact of Natural and Anthropogenic Factors on Late Holocene Sedimentation in the Chukchi Sea

    Late Holocene sediments have been recovered in a core from the central Chukchi Sea to reconstruct their accumulation conditions. The sediments consist mainly of terrigenous and just partly of biogenic material...

    E. G. Vologina, M. Sturm, N. V. Kulagina… in Izvestiya, Atmospheric and Oceanic Physics (2023)

  2. No Access

    Article

    Composition of Late Holocene Deposits in the Southern Chukchi Sea

    The objective of the work was a comprehensive study of Late Holocene bottom sediments from the southern Chukchi Sea and reconstruction of their accumulation conditions. Analytical methods included macroscopic ...

    E. G. Vologina, M. Sturm, N. V. Kulagina, K. I. Aksentov in Oceanology (2023)

  3. No Access

    Article

    Postglacial Vegetation and Climate History of the Oka Plateau (East Sayan Mountains, South Siberia)

    The first results of palynological analysis of the bottom deposits of Kaskadnoe Lake and a reconstruction of vegetation and climate on the Oka Plateau over the last 14.2 ky are reported. It is shown that appro...

    E. V. Bezrukova, N. V. Kulagina, E. V. Volchatova… in Doklady Earth Sciences (2021)

  4. No Access

    Article

    Environmental changes in the northeast of the Buryat Republic during the Holocene post-Optimum: First results

    The results of a high-temporal-resolution geochemical and pollen analysis of bottom sediments in Lake Baunt (55°11′15″ N and 113°01′45″ E), located within the continuous permafrost zone, have made it possible ...

    E. V. Bezrukova, A. A. Amosova, V. M. Chubarov… in Contemporary Problems of Ecology (2017)

  5. No Access

    Article

    First data on the environment and climate change within the Zhom-Bolok volcanic field (Eastern Sayan Mountains) in the Middle–Late Holocene

    This paper considers the results of comprehensive lithological, biostratigraphic, and geochemical investigation of sediments in Khara-Nur Lake (Eastern Sayan Mountains) situated in the area of the greatest Hol...

    E. V. Bezrukova, A. A. Shchetnikov, M. I. Kuzmin, O. G. Sharova… in Doklady Earth Sciences (2016)

  6. No Access

    Article

    Glucose bioconversion in heavy water: Contribution of water deuterium atoms to the isotope composition of glycerol

    Hydrogen exchange in glycerol formed by fermentation of D- and D-[1-13C]glucose in heavy water in the presence of Saccharomyces cerevisiae was studied by 13C NMR. A method was suggested for calculating the fragme...

    A. G. Sakhabutdinov, A. L. Bisikalo… in Russian Journal of Applied Chemistry (2012)

  7. No Access

    Article

    First results of reconstruction of the environment in the Holocene on the Lena-Angara plateau (Eastern Siberia)

    E. V. Bezrukova, A. V. Belov, M. I. Kuzmin, P. P. Letunova… in Doklady Earth Sciences (2011)

  8. No Access

    Article

    Glycolysis of D-glucose in heavy water: Role of intermediate stages in the formation of ethanol isotopic structure

    Distribution of deuterium in ethanol after glycolysis of D- and [1-13C]-D-glucose in heavy water in the presence of Saccharomyces cerevisiae was studied, the role of intermediate reactions in formation of isotope...

    A. G. Sakhabutdinov, A. L. Bisikalo… in Russian Journal of Applied Chemistry (2011)

  9. No Access

    Article

    Bioconversion of D-glucose in heavy water: Effect of water isotopomeric composition on deuterium fragment distribution in ethanol

    The relative distribution of deuterium between methyl and methylene groups in ethanol at the bioconversion of D-glucose in heavy water was studied.

    A. G. Sakhabutdinov, A. L. Bisikalo… in Russian Journal of Applied Chemistry (2010)

  10. No Access

    Article

    Holocene climate history of the Western Baikal region: Carbonate sedimentary record of Kholbo-Nur Lake

    E. V. Sklyarov, E. P. Solotchina, E. G. Vologina, O. P. Izokh… in Doklady Earth Sciences (2010)

  11. No Access

    Article

    Lake Kotokel as a stratotype for the late glacial and Holocene in southeastern Siberia

    E. V. Bezrukova, S. K. Krivonogov, H. Takahara, P. P. Letunova… in Doklady Earth Sciences (2008)

  12. No Access

    Article

    Expression of mRNA for chemokines and chemokine receptors in tissues of the myometrium and uterine leiomyoma

    Tissues samples of leiomyoma and myometrium obtained intraoperatively were analyzed. For evaluation of the synthesis of MIP-1α, MIP-1β, RANTES, eotaxin, eotaxin-2, interleukin-8, CCR1, CCR3, CCR5, CXCR1, and C...

    K. A. Syssoev, N. V. Kulagina… in Bulletin of Experimental Biology and Medic… (2008)

  13. No Access

    Article

    First high-resolution dated records of vegetation and climate changes on the Lake Baikal northern shore in the middle-late Holocene

    E. V. Bezrukova, A. V. Belov, A. A. Abzaeva, P. P. Letunova… in Doklady Earth Sciences (2006)

  14. No Access

    Article

    Formation and distribution of salt lakes in Pribaikal’e and Zabaikal’e regions

    Accumulation of salts in lakes with small catchment areas and substrate composed of magmatogene, metamorphized, and sedimentary rocks have been studied. Direct dependence of the chemical composition of salt-la...

    A. A. Dzyuba, N. V. Kulagina in Water Resources (2005)

  15. No Access

    Article

    Reaction of Phenylurea and N-Trimethylsilyl-N'-phenylurea with Vanadocene and N-Bromosuccinimide

    Phenylurea and N-trimethylsilyl-N'-phenylurea react with vanadocene (Cp2V) in toluene to give N-(η5-cyclopentadienyl)vanadio-N'-phenylurea as a major product and Cp2VN = C = O and aniline as byproducts. The react...

    A. S. Gordetsov, S. V. Zimina, N. V. Kulagina… in Russian Journal of General Chemistry (2003)

  16. No Access

    Article

    Mechanism of Deuterium Distribution in Ethanols

    Deuterium distribution in ethanols produced by sulfuric acid hydration of ethylene was studied by quantitative NMR spectroscopy.

    A. G. Sakhabutdinov, N. V. Kulagina… in Russian Journal of Applied Chemistry (2003)

  17. No Access

    Chapter

    Pliocene-Quaternary Vegetation and Climate History of the Lake Baikal Area, Eastern Siberia

    A palynological study was carried out on the BDP-96 hole 1 core. We distinguished six major large stages (Al-6) characterized by vegetation changes in the Lake Baikal catchment area. The existence of the most ...

    E. V. Bezrukova, N. V Kulagina, P. P. Letunova… in Long Continental Records from Lake Baikal (2003)

  18. No Access

    Article

    Reaction of 1-Hydroxybenzotriazole and Its Organotin Derivatives with Vanadocene

    1-Hydroxynbenzotriazole, 1-(N-tributylstannyloxy)benzotriazole, or bis(1-benzotriazolyloxy)dibutylstannane react with vanadocene (Cp2V) to give as the major product 1-[(η5-cylcopentadienyl)vanadiooxy]benzotriazol...

    A. S. Gordetsov, S. V. Zimina, N. V. Kulagina in Russian Journal of General Chemistry (2001)

  19. No Access

    Article

    N,N′-Bis(trimethylsilyl)dicyandiamide

    N,N′-Bis(trimethylsilyl)dicyandiamide was prepared for the first time by the reaction of dicyandiamide with hexamethyldisilazane in boiling tetrahydrofuran. Thermal transformations of this compound were studied ...

    A. S. Gordetsov, L. N. Martynova, S. V. Zimina, E. M. Moseeva… in Russian Chemical Bulletin (1994)

  20. No Access

    Article

    N-(η5-Cyclopentadienylvanadium)benzenesulfonamide

    N-(η5-Cyclopentadienylvanadium)benzenesulfonamide has been synthesized for the first time by treating benzenesulfonamide orN-(tributylstannyl)benzenesulfonamide with vanadocene.

    A. S. Gordetsov, S. V. Zimina, E. M. Moseeva, S. E. Skobeleva… in Russian Chemical Bulletin (1993)