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International Journal of Digital Earth 2019年第8期12卷 948-961页

作者： Alexander v.Evseev Tatiana M.Krasovskaya vladimir S.Tikunov Irina N.Tikunova Geographical Faculty Lomonosov Moscow State UniversityMoscowRussia

Territories of traditional nature use(TTNU)of indigenous population in the Arctic zone presents a historical model of sustainable development whose main principles are valuable for modern practice of economic activities in this region as *** peoples traditional nature management practice in the Russian Arctic nowadays exists only within tribal community lands,though their virtual limits may be larger and known to indigenous population,helping to preserve regional *** of TTNU in the course of modern economic development,including the Northern Silk Road coastal infrastructure,is important for regional ecological and social *** may be regarded as ecological buffer zones,restoring ecosystem functions important for regional sustainable development,though modern market economy treats them mainly as economic units less valuable for incomes than industrial.A new look at TTNU may be supported by their ecologicaleconomic assessment.A case study in the coastal Nenets TTNU belonging to family-clan community‘Ya’Erv’demonstrates its possible input to local sustainable development.

关键词： Indigenous peoples Russian Arctic traditional nature management ecosystem services value sustainable development Ice Silk Road

NMR chemical shifts of carbon atoms and characteristic shift ranges in the oil sample

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Petroleum Research 2022年第2期7卷 269-274页

作者： Ilfat Z.Rakhmatullin Sergej v.Efimov Alexander v.Klochkov Oleg I.Gnezdilov Mikhail A.varfolomeev vladimir v.Klochkov Kazan Federal University 18 Kremlevskaya St.Kazan420008Russian Federation

Application of high resolution^(13)C nuclear magnetic resonance(NMR)spectroscopy to characterize crude oil was *** chemical shifts of^(13)C NMR functional groups that determine the composition of the oil sample were *** fractions of primary,secondary,quaternary,tertiary,aromatic groups,aromatic factor and average hydrocarbon chain length of aliphatic hydrocarbons of the oil sample according to^(13)C NMR spectra were *** description of the^(13)C NMR spectra of the oil sample using a single consideration of three NMR spectra:^(13)C,^(13)C Attached Proton Test(APT),^(13)C with Gated Decoupling(GD)was *** different contribution of the studied oil sample in the aliphatic(10e75 ppm)and aromatic(115e165 ppm)areas of the^(13)C NMR spectra was *** presence of all major hydrocarbon components in the studied oil sample was established on the quantitative level,the aromaticity factor and the mean length of the hydrocarbon chain were *** fractions of aromatic molecules and functional groups constituting oil hydrocarbons were *** this work we demonstrate that the attached proton test and gated decoupling^(13)C NMR spectroscopy can afford all information to complete the chemical shift assignment of an oil sample,especially for determination of long range 1He^(13)C coupling constants and^(13)C multiplicity.

关键词： ^(13)C NMR spectroscopy Crude oil Oil fraction Functional group Qualitative analysis Quantitative composition Aromaticity Attached proton test Gated decoupling

Alien species of mammals and their impact on natural ecosystems in the biosphere reserves of Russia

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Integrative Zoology 2008年第2期3卷 83-94页

作者： valery M.NERONOv Ludmila A.KHLYAP vladimir v.BOBROv Andrey A.WARSHAvSKY A.N.Severtsov Institute of Ecology and Evolution Russian Academy of SciencesMoscowRussia

The paper analyses the results of a survey of 37 Russian biosphere reserves using questionnaires concerning thepresence of alien species of mammals, their pathways of penetration, and their impacts on protected *** penetration of alien mammals into terrestrial ecosystems of Russia is extensive, both in places with maximumhuman environmental impact (inhabited areas and agricultural lands) and in biosphere reserves with minimal humanimpact. There are 62 mammal species registered as alien in Russian ecosystems and they account for 22% of theterrestrial mammal fauna of Russia. The percentage of alien species in biosphere reserves is 32.6% at most. In mostregions, Castor fiber, Ondatra zibethicus, Nyctereutes procyonoides, Canis familiaris, Neovison vison and Susscrofa are very dangerous, and both Castor fiber and Sus scrofa can have environment-forming impacts.

关键词： alien species biosphere reserves invasions mammals(Mammalia) Russia.

Study of Holocene glacier degradation in central Asia by isotopic methods for long-term forecast of climate changes

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Research in Cold and Arid Regions 2013年第1期5卷 114-125页

作者： vladimir I. Shatravin Tamara v. Tuzova Tien-Shan Mountain Scientific Center Institute of Water Problems and Hydro Power National Academy of Sciences of the Kyrgyz Republic Institute of Water Problems and Hydro Power National Academy of Sciences of the Kyrgyz Republic

This article presents a summary of our studies of Holocene moraines and glaciers of the Tien-Shan, Pamir, and Himalaya moun- mills with the purpose of providing pattern regularity of the Holocene glaciation decomposition. We developed a method for ob- taining reliable radiocarbon dating of moraines with the use of autochthonous organic matter dispersed in fine-grained morainic material, as well there were shown new possibilities of isotope-oxygen and isotope-uranium analysis for the Holocene glaciations dynamics. We found that Holocene glaciations disintegrate stadiaUy according to the decaying principle, and seven main stages may be distinguished. We achieved the absolute dating of the first three stages, identifying these periods as 8,000, 5,000, and 3,400 years ago. The application of the above-mentioned isotope methods of the Holocene glaciations and moraines study will allow re- searchers to improve the offered model of the Holocene glaciations disintegration; it will be great contribution to salvation of the problem of long-term climatic and glaciations forecast.

关键词： moraines glaciation Holocene climate changes long-term forecast central Asia

Climate change evidence in tree growth and stand productivity at the upper treeline ecotone in the Polar Ural Mountains

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Forest Ecosystems 2020年第1期7卷 76-91页

作者： Nadezhda M.Devi vladimir v.Kukarskih Аrina A.Galimova valeriy S.Mazepa Andrey A.Grigoriev Institute of Plant and Animal Ecology Ural BranchRussian Academy of Sciences8 Marta202/3Ekaterinburg 620144Russia

Background:Recent warming is affecting species composition and species areal distribution of many ***,although most treeline studies have estimated the rates of forest expansion into tundra,still little is known about the long-term dynamic of stand productivity at the forest-tundra ***,we make use of tree-ring data from 350 larch(Larix sibirica Ledeb.)and spruce(Picea obovata Ledeb.)sampled along the singular altitudinal treeline ecotone at the Polar Urals to assess the dynamic of stand establishment and productivity,and link the results with meteorological observations to identify the main environmental ***:The analysis of stand instalment indicated that more than 90%of the living trees appeared after *** this period,the stand became denser and moved 50m upward,while in recent decades the trees of both species grew *** maximum afforestation occurred in the last decades of the twentieth century,and the large number of encountered saplings indicates that the forest is still *** upward shift coincided with a slight increase of May-August and nearly doubling of September-April precipitation while the increase in growth matched with an early growth season warming(June+0.27°C per decade since 1901).This increase in radial growth combined with the stand densification led to a 6-90 times increase of biomass since ***:Tree-ring based twentieth century reconstruction at the treeline ecotone shows an ongoing forest densification and expansion accompanied by an increased *** changes are driven by climate change mechanism,whereby the leading factors are the significant increase in May-June temperatures and precipitation during the dormant *** of phytomass accumulation mechanisms within treeline ecotone is valuable for improving our understanding of carbon dynamics and the overall climate balance in current treeline ecosystems and for predicting how these will be altered by global ch

关键词： Polar Urals Treeline Productivity Climate change Radial growth Recruitment Larch Spruce

Incubation of PbSe Thin Films in a Tin(Ⅱ) Salt Aqueous Solution:Modification and Ion-Exchange Reactions

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Journal of Materials Science & Technology 2015年第8期31卷 790-797页

作者： Zinaida I.Smirnova Larisa N.Maskaeva vyacheslav F.Markov vladimir I.voronin Mikhail v.Kuznetsov Ural Federal University(named after the First President of Russia B.N.Yeltsin) ul.Mira 19Yekaterinburg620002Russia Ural Institute of State Fire Service of EMERCOM of Russia Yekaterinburgul.Mira 22620062Russia Institute of Metal Physics Ural BranchRussian Academy of Sciencesul.S.Kovalevskoy 18Yekaterinburg620041Russia Institute of Solid State Chemistry Ural BranchRussian Academy of Sciencesul.Pervomaiskaya 91Yekaterinburg620990Russia

Topochemical ion-exchange reactions between solid micro- and nanostructured metal chalcogenides and aqueous salt solutions are generally used for formation of composite structures based on initial metal chalcogenides and products of their ion-exchange transformation. However, ion exchange has promises as a route to obtaining both composites and solid solutions based on the initial and the end chalcogenide phases. With the help of the ion-exchange technique, single-phase films of Phi xSnxSe substitutional solid solutions with a tin content up to -2 at.%, which are promising for mid- and long-wavelength infrared radiation （IR） optoelectronics, have been obtained at the interface between PbSe poly- crystalline thin films and SnCl2 aqueous solutions containing sodium citrate. It has been shown that the pH value and temperature of the reaction system play an important role in the ion-exchange process. Incubation of lead selenide （PbSe） films in a tin（II） salt aqueous solution also leads to their modification with oxygen-containing tin compounds to a depth of-3 nm. Differences in the film structure, such as changes in the coherent scattering region sizes and orientation of crystallites along the [220] direction, which arise during the contact with citrate-containing SnCl2 solutions, have also been revealed. For the first time, an idea of the existence of a relatively wide reaction zone of an intragranular topochemical ion-exchange reaction in an aqueous solution, within which substitutional solid solutions can form in micro- and nanostructured systems, has been set forth.

关键词： Ion-exchange synthesis Thin films Lead selenide Tin selenide Substitutional solid solutions Topochemical reaction

Element selection for functional materials discovery by integrated machine learning of elemental contributions to properties

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npj Computational Materials 2023年第1期9卷 639-648页

作者： Andrij vasylenko Dmytro Antypov vladimir v.Gusev Michael W.Gaultois Matthew S.Dyer Matthew J.Rosseinsky Department of Chemistry University of LiverpoolCrown StreetLiverpool L697ZDUnited Kingdom Department of Computer Science University of LiverpoolAshton StreetLiverpool L693BXUnited Kingdom

The unique nature of constituent chemical elements gives rise to fundamental differences in *** materials based on their phase fields,defined as sets of constituent elements,before specific differences emerge due to composition and structure can reduce combinatorial complexity and accelerate screening,exploiting the distinction from composition-level *** and evaluation of novelty of materials classes align with the experimental challenge of identifying new areas of *** address this,we present PhaseSelect,an end-to-end machine learning model that combines representation,classification,regression and novelty ranking of phase *** leverages elemental characteristics derived from computational and experimental materials data and employs attention mechanisms to reflect the individual element contributions when evaluating functional performance of phase *** demonstrate this approach for high-temperature superconductivity,high-temperature magnetism,and targeted bandgap energy applications,showcasing its versatility and potential for accelerating materials exploration.

关键词： materials phase elements

Accounting for natural-climatic conditions in the design of roads in western Siberia

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Research in Cold and Arid Regions 2015年第4期7卷 307-315页

作者： vladimir N.Efimenko Sergey v.Efimenko Alexey v.Sukhorukov Tomsk State University of Architecture and Building

The paper proposes a methodological scheme that thoroughly accounts for natural-climatic conditions which can impair the stability and longevity of transport facilities （roadways）, to ensure the best possible quality of the initial road design. Factors determining the formation of water-heating mode subgrade soils are allocated, and an information database for mathematical modeling of geocomplexes is shown. values of strength and deformability of clay soils are calculated within the limits of the defined, homogeneous road districts in Western Siberia to provide the required level of reliability of design solutions.

关键词： transport facilities road-climatic zoning water-heating mode subgrade soils design geocomplexes

Sequential piezoresponse force microscopy and the‘small-data’problem

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npj Computational Materials 2018年第1期4卷 419-425页

作者： Harsh Trivedi vladimir v.Shvartsman Marco S.A.Medeiros Robert C.Pullar Doru C.Lupascu Institute for Materials Science and Center for Nanointegration Duis order ferroic switching induced by sburg-Essen(CENIDE) University of Duisburg-EssenEssenGermany CICECO–Aveiro Institute of Materials University of AveiroAveiroPortugal Department of Materials and Ceramic Engineering University of AveiroAveiroPortugal

The term big-data in the context of materials science not only stands for the volume,but also for the heterogeneous nature of the characterization *** is a common problem in combinatorial searches in materials science,as well as ***,these data-sets may well be‘small’in terms of limited step-size of the measurement *** to this limitation,application of higher-order statistics is not effective,and the choice of a suitable unsupervised learning method is restricted to those utilizing lower-order *** an interesting case study,we present here variable magnetic-field Piezoresponse Force Microscopy(PFM)study of composite multiferroics,where due to experimental limitations the magnetic field dependence of piezoresponse is registered with a coarse *** efficient extraction of this dependence,which corresponds to the local magnetoelectric effect,forms the central problem of this *** evaluate the performance of Principal Component Analysis(PCA)as a simple unsupervised learning technique,by pre-labeling possible patterns in the data using Density Based Clustering(DBSCAN).Based on this combinational analysis,we highlight how PCA using non-central second-moment can be useful in such cases for extracting information about the local material response and the corresponding spatial distribution.

关键词： DBSCAN problem utilizing

Pharmacological and Predicted Activities of Natural Azo Compounds

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Natural Products and Bioprospecting 2017年第1期7卷 151-169页

作者： valery M.Dembitsky Tatyana A.Gloriozova vladimir v.Poroikov National Scientific Center of Marine Biology 17 Palchevsky Str.VladivostokRussia 690041 Institute of Biomedical Chemistry MoscowRussia 119121

This paper describes research on natural azo compounds isolated from fungi,plant,bacteria,and *** than 120 biologically active diazene containing alkaloids demonstrate confirmed pharmacological activity,including antitumor,antimicrobial,and antibacterial *** structures,origin,and biological activities of azo compounds are *** the computer program PASS,some structure–activity relationship new activities are also predicted,pointing toward possible new applications of these *** article emphasizes the role of natural azo compounds as an important source of drug prototypes and leads for drug discovery.

关键词： Azo metabolites Alkaloids Fungi Plant Bacteria Sponges SAR