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Your search keyword '"Valery S. Kozlov"' showing total 8 results
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8 results on '"Valery S. Kozlov"'

1. Biogenic Origin of Fe-Mn Crusts from Hydrothermal Fields of the Mid-Atlantic Ridge, Puy de Folles Volcano Region

Author

Elena S. Sergienko, Elena R. Tarakhovskaya, Oleg V. Rodinkov, Svetlana Yu. Yanson, Dmitrii V. Pankin, Valery S. Kozlov, Kamil G. Gareev, Alexander N. Bugrov, and Petr V. Kharitonskii

Subjects
ferromanganese formations, biomineralization, Mid-Atlantic Ridge, gas chromatography—mass spectrometry, rocks magnetism, iron-oxidizing and iron-reducing bacteria, Geology, QE1-996.5
Abstract

Ferromanganese formations are widespread in the Earth’s aquatic environment. Of all the mechanisms of their formation, the biogenic one is the most debatable. Here, we studied the Fe-Mn crusts of hydrothermal fields near the underwater volcano Puy de Folles (rift valley of the Mid-Atlantic Ridge). The chemical and mineralogical composition (optical and electron microscopy with EDX, X-ray powder diffraction, X-ray fluorescence analysis, Raman and FTIR spectroscopy, gas chromatography—mass spectrometry (GC-MS)) and the magnetic properties (static and resonance methods, including at cryogenic temperatures) of the samples of Fe-Mn crusts were investigated. In the IR absorption spectra, based on hydrogen bond stretching vibrations, it was concluded that there were compounds with aliphatic (alkane) groups as well as compounds with double bonds (possibly with a benzene ring). The GC-MS analysis showed the presence of alkanes, alkenes, hopanes, and steranes. Magnetically, the material is highly coercive; the blocking temperatures are 3 and 13 K. The main carriers of magnetism are ultrafine particles and X-ray amorphous matter. The analysis of experimental data allows us to conclude that the studied ferromanganese crusts, namely in their ferruginous phase, were formed as a result of induced biomineralization with the participation of iron-oxidizing and iron-reducing bacteria.

Published
2024
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2. The 20-Year Russian-Italian Scientific Collaboration in Industrial Applications of Neutrons and Prospects on High Flux Reactor 'PIK' of Russian National Centre 'Kurchatov Institute'

Author

Valery S. Kozlov, Massimo Rogante, Kir A. Konoplev, Alexander Ya. Vul, Yury Kulvelis, and Vasily T. Lebedev

Subjects
Nuclear and High Energy Physics, High flux, Engineering, Research centre, business.industry, Nuclear engineering, Neutron, business, Atomic and Molecular Physics, and Optics
Abstract

The long-term cooperation between the Rogante Engineering Office (REO) and the Petersburg Nuclear Physics Institute (PNPI) of the National Research Centre “Kurchatov Institute” in the field of neut...

Published
2021
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5. Comparison of aerosol characteristics at polar stations Cape Baranov and Barentsburg in measurement seasons of 2018-2019

Author

Valery S. Kozlov, Ivan A. Kruglinsky, Vadim V. Movchan, Alexander Makshtas, Sergey M. Sakerin, Dmitriy G. Chernov, Yuri S. Turchinovich, Dmitry M. Kabanov, Konstantin E. Lubo-Lesnichenko, Marina A. Loskutova, and Vladimir F. Radionov

Subjects
Atmosphere, geography, geography.geographical_feature_category, Arctic, Cape, Archipelago, Polar, Environmental science, Atmospheric sciences, Aerosol
Abstract

We discuss the measurements of aerosol optical depth (AOD) of the atmosphere and aerosol (NA) and black carbon (MBC) concentrations in 2018-2019 at two Arctic stations: Barentsburg (Archipelago Spitsbergen) and “Cape Baranov” (Archipelago Severnaya Zemlya). The average aerosol characteristics at “Cape Baranov” had been: AOD (0.5 μm) = 0.11, NA = 5.24 cm-3, MBC = 47 ng/m3 in 2019; and AOD (0.5 μm) = 0.07, MBC = 68 ng/m3 in 2018. The aerosol characteristics in Barentsburg, on the average, have larger values: AOD (0.5 μm) = 0.12, NA = 6.09 cm-3, MBC = 91 ng/m3 in 2019; and AOD (0.5 μm) = 0.087, NA = 6.54 cm-3, MBC = 109 ng/m3 in 2018.

Published
2020
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6. Peculiarities of variability of aerosol characteristics in 2018 in polar regions (Severnaya Zemlya and Spitsbergen Archipelagos) and in Western Siberia

Author

Valery S. Kozlov, Yuri S. Turchinovich, Sergey M. Sakerin, Elena P. Yausheva, Dmitriy G. Chernov, Dmitriy M. Kabanov, Aleksander Makshtas, and Vladimir F. Radionov

Subjects
geography, geography.geographical_feature_category, Arctic, Observatory, Archipelago, Environmental science, Polar, Monthly average, Atmospheric sciences, Western siberia, Aerosol
Abstract

Results of measurements of optical and microphysical characteristics of atmospheric aerosol at the Mys Baranova ice base in 2018 are analyzed. Peculiarities of monthly average variability of aerosol characteristics are considered. The data are compared with the analogous (in particular, many-year) data obtained at the Barentsburg polar station and the midlatitudinal Fonovaya Observatory. The impact of transported smokes on the measured parameters is demonstrated.

Published
2019
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7. Seasonal and interannual variations of aerosol characteristics in the Arctic settlement Barentsburg (Spitsbergen archipelago, 2011-2017)

Author

Yury S. Turchinovich, Olga I. Khuriganowa, D. G. Chernov, Liudmila P. Golobokova, Sergey M. Sakerin, Dmitry M. Kabanov, Valery S. Kozlov, Olga R. Sidorova, Tamara V. Khodzher, and Vladimir F. Radionov

Subjects
geography, geography.geographical_feature_category, Oceanography, Settlement (structural), Archipelago, Environmental science, The arctic, Aerosol
Published
2018
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8. Station for the comprehensive monitoring of the atmosphere at Fonovaya Observatory, West Siberia: current status and future needs

Author

V. V. Antonovich, Mikhail V. Panchenko, G. P. Kokhanenko, D. G. Chernov, Vladimir P. Smargunov, Denis K. Davydov, D. A. Pestunov, Kathy S. Law, D. E. Savkin, Artem V. Kozlov, Mikhail M. Novoselov, Gérard Ancellet, Jean-Daniel Paris, Pavel N. Antokhin, Motoki Sasakawa, Elena P. Yausheva, Alexadr V. Fofonov, Mikhail Arshinov, G. A. Ivlev, Ioganes E. Penner, Toshinobu Machida, Boris D. Belan, Gennady N. Tolmachev, Valery S. Kozlov, Denis V. Simonenkov, Jacques Pelon, Yury S. Balin, V.E. Zuev Institute of Atmospheric Optics (IAO), Siberian Branch of the Russian Academy of Sciences (SB RAS), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), National Institute for Environmental Studies (NIES), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Sorbonne Université (SU), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], 010504 meteorology & atmospheric sciences, Meteorology, 01 natural sciences, 010309 optics, Atmospheric composition, Atmosphere, Observatory, 0103 physical sciences, Environmental science, Instrumentation (computer programming), Current (fluid), [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment, 0105 earth and related environmental sciences
Abstract

International audience; Here, we briefly describe the station established by IAO SB RAS at Fonovaya Observatory to carry out continuous measurements of atmospheric composition and other parameters in West Siberia. Specifications of the instrumentation installed at the station, functioning modes of individual units comprising it, collection, transferring and storage of the measurement data are presented.

Published
2018
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