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Solar Activity and the Climate of Prebaikalia

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空间科学学报 2005年第5期25卷 474-477页

作者： v.a.kovalenko G.A.Zherebtsov S.I.Molodykh Institute of Solar-Terrestrial Physics Siberian Branch Russian Academy of Sciences Irkutsk 664033 RussiaInstitute of Solar-Terrestrial Physics Siberian Branch Russian Academy of Sciences Irkutsk 664033 RussiaInstitute of Solar-Terrestrial Physics Siberian Branch Russian Academy of Sciences Irkutsk 664033 Russia

This paper presents convincing evidence for the reality of manifestations of solar variability in climate characteristics of the Prebaikalia. A numerical estimate is obtained of this influence on ground air temperature. It is shown that the main meaningful variations in air temperature in the region for the period1881-1960 were caused by solar activity. Since the 1960s till the present, with the influence of solar variability continuing, a clear-cut influence of another factor has been observed, the role of which has been steadily increasing, and in the hst decade it has now exceeded the contribution of solar variability. Research results on the variations in hydrological characteristics of Lake Baikal and the Angara river and their connection with solar activity are presented. It is shown that these characteristics are closely correlated with the duration of solar cycles.

关键词：太阳活动气候变化大气 GAT

Preliminary results of lithological and palynological study of Svobodny, ancient man's parking relic in Amur region, Russia

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Global Geology 2024年

作者： kovalenko S.v. Kezina T.v. Kryuchko E.I. Mironov M.A. Amur State University Center for the Preservation of Historical and Cultural Heritage of the Amur Region

Asingle-layermonumentSvobodny,ancientman’sparkinglot-1,discoveredin2021aspart of archaeological work to study the zone of economic development of the Amur region was investigated lithologically and palynologically. Based on the results of geomorphological analysis of the territory, the study of artifacts, palynological data, as well as analogy with previously identified and sufficiently studied relics in the region, the existence of the Osinoozersk late Neolithic culture in this territory is assumed. The time of its expansion in the Amur region is determined within the framework of the second half of the Iv millennium BC to the first half of the II millennium BC. The preliminary results of palynological analysis suggest the existence of a temperate climate here, was close to the modern one, which does not contradict the reconstructed paleoclimate and environments of the region during the Holocene period.

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Preliminary results of lithological and palynological study of Svobodny,ancient man’s parking relic in Amur region,Russia

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Global Geology 2024年第3期27卷 121-131页

作者： kovalenko S.v. Kezina T.v. Kryuchko E.I. Mironov M.A. Center for the Preservation of Historical and Cultural Heritage of the Amur Region Blagoveshchensk 675000Russia Amur State University Blagoveshchensk 675027Russia

A single-layer monument Svobodny,ancient man's parking lot-1,discovered in 2021 as part of archaeological work to study the zone of economic development of the Amur region was investigated lithologically and *** on the results of geomorphological analysis of the territory,the study of artifacts,palynological data,as well as analogy with previously identified and sufficiently studied relics in the region,the existence of the Osinoozersk late Neolithic culture in this territory is *** time of its expansion in the Amur region is determined within the framework of the second half of the Iv millennium BC to the first half of the II millennium *** preliminary results of palynological analysis suggest the existence of a temperate climate here,was close to the modern one,which does not contradict the reconstructed paleoclimate and environments of the region during the Holocene period.

关键词： Osinoozersk culture palynological spectra Zeya River paleoclimate

Engineering stable perovskite X-ray detectors

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Light(Science & Applications) 2022年第10期11卷 2276-2276页

作者： Kostiantyn Sakhatskyi Maksym v.kovalenko Institute of Inorganic Chemistry Department of Chemistry and Applied BiosciencesETH ZürichCH-8093 ZürichSwitzerland Laboratory for Thin Films and Photovoltaics Empa-Swiss Federal Laboratories for Materials Science and TechnologyCH-8600 DübendorfSwitzerland

Nature Photonics 16,575-581(2022) The past decade has seen the raise of hybrid organic-inorganic lead halide perovskites as highly potent semi-conductors for direct-conversion X-ray *** offering unmatched cost advantages owing to solution growth,and unique defect-tolerant,intrinsic semi-conductor characteristics,these materials suffer from reduced operational stability caused by ionic drift and lattice instability.

关键词： perovskite matched inorganic

Synthesis of RE-Ag,Al-RE-doped sol-gel glass and films for solar cells

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Journal of Rare Earths 2009年第4期27卷 671-674页

作者： A.v.Semchenko v.v.Sidsky v.Е.Gaishun D.L.kovalenko W.Strek Francisk Skorina Gomel State University 246019 Sovetskaya st.104 Gomel Belarus Institute of Low Temperature and Structures Research PAN Okolna st.2 Wroclaw Poland

The paper dealt with the study of fluorescence properties of sol-gel systems doped with rate-earth ions and co-doped with silver. The general problem for these types of inorganic phosphors was a very low absorbance in the visible range. Therefore, a sensitizer of luminescence of the rare-earth ions should be selected and used. The sensitizer should possess a good absorbance in the visible range and strong interaction with the rare-earth ions. In this study silver ions were selected as the sensitizer.

关键词： sol-gel method sol-gel glass and film luminescence and its amplification rare-earth ions silver ions energy transfer

Ferrofluid nucleus phase transitions in an external uniform magnetic field

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Chinese Physics B 2015年第10期24卷 322-330页

作者： B.M.Tanygin S.I.Shulyma v.F.kovalenko M.v.Petrychuk Faculty of Radiophysics Taras Shevchenko National University of Kyiv

The phase transition between a massive dense phase and a diluted superparamagnetic phase has been studied by means of a direct molecular dynamics simulation. The equilibrium structures of the ferrofluid aggregate nucleus are obtained for different values of a temperature and an external magnetic field magnitude. An approximate match of experiment and simulation has been shown for the ferrofluid phase diagram coordinates ＂field-temperature＂. The provided phase coexistence curve has an opposite trend comparing to some of known theoretical results. This contradiction has been discussed. For given experimental parameters, it has been concluded that the present results describe more precisely the transition from linear chains to a dense globes phase. The theoretical concepts which provide the opposite binodal curve dependency trend match other experimental conditions： a diluted ferrofluid, a high particle coating rate, a high temperature,and/or a less particles coupling constant value.

关键词： ferrofluid aggregate phase diagram molecular dynamics

Li−Garnet Solid-State Batteries with LLZO Scaffolds

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Accounts of Materials Research 2022年第4期3卷 411-415页

作者： Kostiantyn v.Kravchyk Huanyu Zhang Faruk Okur Maksym v.kovalenko Laboratory for Thin Films and Photovoltaics Empa−Swiss Federal Laboratories for Materials Science and TechnologyÜberlandstrasse 129CH-8600 DübendorfSwitzerland Laboratory of Inorganic Chemistry Department of Chemistry and Applied BiosciencesETH ZürichCH-8093 ZürichSwitzerland

Li−garnet solid-state batteries(SSBs)have attracted a great deal of attention due to their nonflammability,nontoxicity,and potential to achieve significantly higher energy and power densities compared to those of conventional Li-ion batteries.1−5 Research that began in 20076 and focused primarily on improving the Li-ion conductivity of Li7La3Zr2O12(LLZO)has since evolved into the development of Li−garnet SSBs,encompassing aspects of the LLZO/Li interface,7,8 the electrochemical voltage window of LLZO,9−11 and compatibility with current cathode chemistries.12−15 Nevertheless,an analysis of the literature shows that there is still no clear opinion in the research community on the configuration of future Li−garnet *** particular,opinions differ on the design of the LLZO-based anode layer that accounts for(i)the dynamic expansion and shrinkage of the Li metal(from up to 5−25μm for the area capacity of 1−5 mAh cm^(−2))and(ii)the probability of void formation at the Li/LLZO interface.

关键词： Solid LLZ compatibility

Swelling/extraction test of Russian reservoir heavy oil by liquid carbon dioxide

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Petroleum Exploration and Development 2018年第5期45卷 918-926页

作者： LOBANOv A A SHHEKOLDIN K A STRUCHKOv I A ZvONKOv M A HLAN M v PUSTOvA E J kovalenko v A ZOLOTUKHIN A B Northern Arctic Federal University JSC RITEK Saint-Petersburg Mining University

The mass transfer between heavy oil and liquid carbon dioxide and the changes of the heavy phase(mixture of heavy oil and CO_2) and light phase(pure CO_2) in the mixture were tested in lab with heavy oil samples from Russia. The experimental results showed that the heavy oil hardly expanded when the concentration of carbon dioxide in the mixture was 10%. When the concentration of carbon dioxide was higher than 26%, the volume of the heavy phase decreased, and the viscosity of the heavy phase increased exponentially as the light components extracted from the heavy oil exceeded the carbon dioxide saturated in the heavy oil. When the concentration of carbon dioxide in the mixture was 26%, the effect of viscosity reducing to the heavy phase was the strongest. The density of the light and heavy phases, volume factor, and solubility of gas and flash viscosity of heavy phase all increased with the rise of carbon dioxide concentration in the mixture. The best concentration of carbon dioxide in the mixture was 26%, when the heavy oil expanded the most and the viscosity of the heavy phase was the lowest. When the concentration of carbon dioxide in the mixture was between 10% and 26%, the volume of the light phase was the smallest and the oil displacement effect was the best.

关键词： enhanced oil recovery liquid CO2 heavy oil swelling test extract test phase behavior

Synthesis of cyclic carbonates from epoxides or olefins and CO_2 catalyzed by metal-organic frameworks and quaternary ammonium salts

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Journal of Energy Chemistry 2013年第1期22卷 130-135页

作者： Olga v. Zalomaeva Nataliya v. Maksimchuk Andrey M. Chibiryaev Konstantin A. kovalenko vladimir P. Fedin Bair S. Balzhinimaev Boreskov Institute of Catalysis pr. Akademika Lavrentieva 5 vorozhtsov Novosibirsk Institute of Organic Chemistry pr Akademika Lavrentieva 9 Nikolaev Institute of Inorganic Chemistry pr. Akademika Lavrentieva 3

Catalytic properties of the metal-organic framework Cr-MIL-101 in solvent-free cycloaddition of CO2 to epoxides to produce cyclic carbon- ates using tetrabutylammonium bromide as co-catalyst have been explored under mild reaction conditions （8 bar CO2, 25 ~C）. Styrene and propylene carbonates were formed with high yields （95% and 82%, respectively）. Catalytic performance of Cr-MIL-101 was compared with other MOFs： Fe-MIL-101, Zn-MOF-5 and HKUST-1, The catalytic properties of different quaternary ammonium bromides, Cr-MIL-101 as well as PW12/Cr-MIL-101 composite material have been assessed in oxidative carboxylation of styrene in the presence of both tert-butyl hydroperoxide and H202 as oxidants at 8-100bar CO2 and 25-80 ~C with selectivity to styrene carbonate up to 44% at 57% substrate conversion.

关键词： carbon dioxide cyclic carbonates cycloaddition heterogeneous catalysis metal-organic framework oxidative carboxylation quaternary am-monium salts