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  1. No Access

    Article

    Long-Chain Alkenones in Sediments of Lake Utichye-3 (Southern Siberia, Khakassia) as a Paleo-Indicator of Climate Change

    Long-chain alkenones are produced exclusively by certain species of microalgae Isochrysidales of the order of haptophytes (Haptophyta). These are polyunsaturated methyl and ethyl ketones C35–C42 with 2–4 trans...

    A. O. Bulkhin, V. V. Zykov, D. N. Marchenko… in Contemporary Problems of Ecology (2024)

  2. No Access

    Article

    Seasonal and inter-annual sedimentation in meromictic Lake Shira (Siberia, Russia) during disturbance of meromixis

    Detailed studies of processes of sediment-record formation are necessary for accurate sediment-derived paleo environmental reconstructions. In order to understand the deposition of sediments in meromictic Lake...

    D. Y. Rogozin, A. V. Darin, V. V. Zykov, I. A. Kalugin… in Journal of Paleolimnology (2023)

  3. No Access

    Article

    Long-Chain Alkenones in Saline Meromictic Lakes of the North Minusinsk Depression (Southern Siberia): First Knowledge and Possible Correlation with Water-Level Dynamics

    Long-chain alkenones (LCAs)—lipides produced by some microalgae of the Haptophyta group in seas and continental water bodies—are promising paleomarkers of climate changes because they are well-preserved in bot...

    D. Y. Rogozin, A. O. Bulkhin, V. V. Zykov… in Contemporary Problems of Ecology (2020)

  4. No Access

    Article

    Okenone in Bottom Sediments as a Proxy for Changes in the Water Level of a Saline Stratified Lake

    Long-term measurements show that the sedimentation dynamics of okenone (a carotenoid of purple sulfur bacteria) reflects the abundance of purple sulfur bacteria, the hydrogen sulfide content, and the stratific...

    D. Y. Rogozin, V. V. Zykov, A. O. Bulkhin… in Doklady Earth Sciences (2020)

  5. No Access

    Article

    Meromixis and Seasonal Dynamics of Vertical Structure of Lake Uchum (South Siberia)

    The seasonal dynamics of the vertical structure of small saline Lake Uchum, located in the steppe arid zone of the south of Siberia (Krasnoyarsk krai), has been studied in detail for the first time. This lake ...

    D. Y. Rogozin, V. V. Zykov, E. A. Ivanova… in Contemporary Problems of Ecology (2018)

  6. No Access

    Article

    Dynamics of purple sulfur bacteria in a meromictic saline Lake Shunet (Khakassia, Siberia) in 2007–2013

    According to the results of seasonal monitoring, in 2007–2013 purple sulfur bacteria morphologically similar to Thiocapsa sp. Shira_1 (AJ633676 in EMBL/GenBank) predominated in the anoxygenic phototrophic communi...

    D. Yu. Rogozin, V. V. Zykov, M. O. Tarnovskii in Microbiology (2016)

  7. No Access

    Article

    Ecology of purple sulfur bacteria in the highly stratified meromictic Lake Shunet (Siberia, Khakassia) in 2002–2009

    Phototrophic sulfur bacteria form dense accumulations in the chemocline zones of stratified lakes where light reaches the sulfide-containing layers of water. Many works are dedicated to the ecophysiology of th...

    D. Yu. Rogozin, V. V. Zykov, A. G. Degermendzhi in Microbiology (2012)

  8. No Access

    Article

    Carotenoids in bottom sediments of lake Shira as a paleoindicator for reconstruction of Lake States in Khakassiya, Russia

    The concentrations of carotenoids buried in the bottom sediments of Lake Shira (Siberia, Khakassiya) have analyzed for the period of the last 2300 years. The bottom sediments were found to contain carotenoids,...

    V. V. Zykov, D. Yu. Rogozin, I. A. Kalugin… in Contemporary Problems of Ecology (2012)

  9. No Access

    Article

    Carotenoids of phototrophic organisms in bottom sediments of meromictic Lake Shira (Siberia, Russia) as an indicator of past stratification

    D. Yu. Rogozin, V. V. Zykov, I. A. Kalugin, A. V. Daryin… in Doklady Biological Sciences (2011)

  10. No Access

    Article

    Effect of winter conditions on distributions of anoxic phototrophic bacteria in two meromictic lakes in Siberia, Russia

    The year-to-year variations of vertical distribution and biomass of anoxic phototrophic bacteria were studied during ice periods 2003–2005 and 2007–2008 in meromictic lakes Shira and Shunet (Southern Siberia, ...

    D. Y. Rogozin, V. V. Zykov, M. Y. Chernetsky, A. G. Degermendzhy… in Aquatic Ecology (2009)

  11. No Access

    Article

    Anoxygenic phototrophic bacteria in meromictic lakes of southern Siberia during the ice period: Spatial distributions and ecological conditions

    D. Yu. Rogozin, V. V. Zykov, M. Yu. Chernetskii… in Doklady Biological Sciences (2009)

  12. No Access

    Article

    Bore impact on a vertical plate

    This paper describes the technique and results of an experimental study of the longitudinal force component, the vertical coordinate of its application point, and the overturning moment for the impact of a bor...

    V. I. Bukreev, V. V. Zykov in Journal of Applied Mechanics and Technical Physics (2008)

  13. No Access

    Article

    Critical diameter and critical thickness of an emulsion explosive

    For a fine emulsion explosive, the dependence of the detonation velocity D on the cylindrical-charge diameter d and plane-layer thickness Δ is determined. It is shown that the emulsion explosive considered has lo...

    V. V. Sil’vestrov, A. V. Plastinin… in Combustion, Explosion, and Shock Waves (2008)