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International Journal of Minerals,Metallurgy and Materials 2017年第5期24卷 523-529页

作者： Anna Zykova Natalya Popova Mark Kalashnikov irina Kurzina Tomsk Polytechnic University Tomsk State University of Architecture and Building Chemical Department Tomsk State University

The effect of TiO;,ZrO;and Na;AlF;ultrafine powders on the fine structure and the phase composition of Fe–14Mn–1.2C steel was *** introduction of the ultrafine powders into the melt influenced the grain size,the quantity,and the character of distribution of nonmetallic inclusions in the railroad *** microstructure of castings was improved significantly because of the refinement of the grain structure and an increase of the grain-boundary *** the modifying mixture was introduced into the melt,either the microtwins of one or two intersecting systems or the precipitations of ε-martensite of different types,or simultaneously the microtwins and wafers of ε-martensite,were present in each grain.

关键词： manganese steel fine structure phase composition refractory metals

Links Between HX-Groups and Hypergroups

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Algebra Colloquium 2021年第3期28卷 441-452页

作者： irina Cristea Michal Novák Babatunde Oluwaseun Onasanya Centre for Information Technologies and Applied Mathematics University of Nova Gorica Slovenia Faculty of Electrical Engineering and Communication Brno University of Technology Czech Republic Key Laboratory of Intelligent Information Processing and Control of Chongqing Municipal Institutions of Higher Education Chongqing Three Gorges University Chongqing 404000China Department of Mathematics University of IbadanNigeria

The concept of an HX-group is an upgrade of the concept of a group,in which a new operation is defined on the family of non-empty subsets of a *** this new support set together with the new operation is a group,then we call it an *** the other hand,a hyperoperation is a mapping having the same codomain as the operation of an HX-group,i.e.,the family of non-empty subsets of the initial set,but a different domain-the set *** could be(and was indeed)a source of confusion,which is clarified in this ***,HX-groups naturally lead to constructions of *** links between these two algebraic concepts are presented,with the aim of reviving the old notion of an HX-group in the current research on algebraic *** of such existing links and one newly established link are also discussed.

关键词： HX-group hyperstructure theory Chinese hypergroupoid EL-hyperstructure power set

COVID-19 and regional resilience:Trends,priorities,and the geography of research

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Journal of Safety Science and Resilience 2024年第3期5卷 295-305页

作者： irina D.Turgel Olga A.Chernova Ural Federal University Mira St19Yekaterinburg620002Russian Federation Southem Federal University Maxim Gorky St88Rostov-on-Don344002Russian Federation

The global economic crisis of 2008-2013 led to the emergence of the concept of resilience,which focuses on the ability of socio-economic system store cover socially,economically,and environmentally after external *** COVID-19 pandemic spurred scholarly interest in regional resilience as a new conceptual framework for the sustainability *** paper aims to examine the influence of the pandemic on the trends and geography of regional resilience *** analyzed data derived from Science Direct and used vOSviewer to perform clus-tering and bibliometric network *** countries that suffered the most from the pandemic and showed the largest regional socioeconomic disparities have become new centers of knowledge on regional ***,the pandemic has led to a visible shift in the research ***,after 2020,more attention has been paid to the structural and topological characteristics of regions that enable them to reorganize their resources more effectively in times of *** study investigates the potential of the resilient development concept as a framework for gaining insights into the factors supporting regional adaptability.

关键词： Regional economy Regional resilience Bibliometric analysis COVID-19 Spatial analysis

How the Investor’s Risk Preferences Influence the Optimal Allocation in a Credibilistic Portfolio Problem

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Journal of Systems Science and Information 2019年第4期10卷 317-329页

作者： irina GEORGESCU Jani KINNUNEN Department of Economic Cybernetics Academy of Economic StudiesBucharestRomania Abo Akademi University Tuomiokirkkotori 3Turku 20500Finland

A classical portfolio theory deals with finding the optimal proportion in which an agent invests a wealth in a risk-free asset and a probabilistic risky asset. Formulating and solving the problem depend on how the risk is represented and how, combined with the utility function defines a notion of expected utility. In this paper the risk is a fuzzy variable and the notion of expected utility is defined in the setting of Liu’s credibility theory. Thus, the portfolio choice problem is formulated as an optimization problem in which the objective function is a credibilistic expected utility. Different approximation calculation formulas for the optimal allocation of the credibilistic risky asset are proved. These formulas contain two types of parameters: Various credibilistic moments associated with fuzzy variables(expected value, variance, skewness and kurtosis) and the risk aversion, prudence and temperance indicators of the utility function.

关键词： prudence temperance credibilistic expected utility

On Fuzzy Preordered Structures and (Fuzzy) Hyperstructures

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Acta Mathematica Sinica,English Series 2012年第9期28卷 1787-1798页

作者： irina CRISTEA Morteza JAFARPOUR Seyed Sh. MOUSAVI School of Applied Sciences University of Nova Gorica Department of Civil Engineering and Architecture University of Udine Mathematics Department Vali-e-Asr University of Rafsanjan Mathematics Department Shahid Bahonar University of Kerman

This article presents a connection between fuzzy preordered structures and hyperstructures. Firstly, we introduce the notion of fuzzy preordered semigroup and then, we construct a semihypergroup associated with it, giving some properties of the associated hyperstructure. Secondly, we define the notion of fuzzy preordered ring in order to construct a fuzzy hyperring.

关键词： Fuzzy preordered semigroup hypergroup fuzzy hyperring mutually associativity

The Disintegration of a Floating Ferrofluid Layer into an Ordered Drop System in a Vertical Magnetic Field

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Fluid Dynamics & Materials Processing 2024年第10期20卷 2205-2218页

作者： Christina Khokhryakova Konstantin Kostarev irina Mizeva Laboratory of Dispersed System Dynamics Institute of Continuous Media Mechanics UrB RASPerm614018Russia Laboratory of Hydrodynamical Stability Institute of Continuous Media Mechanics UrB RASPerm614018Russia Laboratory of Turbulence Institute of Continuous Media Mechanics UrB RASPerm614018Russia

Magnetic fluids,also known as ferrofluids,are versatile functional materials with a wide range of *** applications span from industrial uses such as vacuum seals,actuators,and acoustic devices to medical uses,including serving as contrast agents for magnetic resonance imaging(MRI),delivering medications to specific locations within the body,and magnetic hyperthermia for cancer *** use of a non-wettable immiscible liquid substrate to support a layer of magnetic fluid opens up new possibilities for studying various fluid flows and related instabilities in multi-phase systems with both a free surface and an *** presence of two deformable boundaries within a ferrofluid layer significantly reduces the critical magnetic field strength required to transform the layer into an organized system of drops or polygonal figures evolving according to the intensity,frequency and direction of the considered magnetic *** paper experimentally investigates this problem by assuming a uniform magnetic field perpendicular to the *** specific subject has not been previously explored *** critical magnetic field intensity required to destabilize the ferrofluid layer is determined based on the layer’s thickness and the fluid’s initial magnetic *** is demonstrated that the critical magnetic field strength needed to disrupt the initially continuous ferrofluid layer increases with the layer’s ***,an increase in the ferrofluid’s magnetic susceptibility results in a decrease in the critical magnetic field *** emerging droplet structures are analyzed in terms of the number of drops,their size,and the periodicity of their *** number of droplets formed depends on the initial thickness of the layer,the presence or absence of a stable rupture in the upper layer,and the rate at which the magnetic field strength is increased to the critical value.A characteristic viscous time is proposed

关键词： Ferrofluid liquid substrate normal field instability ordered droplet structure

Improvement of copper-molybdenum ore beneficiation using a combined flotation and biohydrometallurgy method

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International Journal of Mining Science and Technology 2013年第1期23卷 41-46页

作者： irina Pestryak Valery Morozov Jamsranjav Baatarhuu Chemistry Department Moscow Mining University Moscow 119991 Russia Erdenet Mining Corporation Erdenet Orkhon Aimag 213900 Mongolia

The authors present the results of analysis of material composition and experimental investigations of acid and biohydrometallurgical leaching of middlings on grain size, pH level, leaching process duration, temperature and slurry density. The rational parameters of flotation and acid-bacterial leaching of middlings providing an efficient release of valuable components from mineral complexes and recovery to flotation concentrate and leaching solution have been determined. A combined flowsheet and a beneficiation process for bulk flotation middlings of copper-molybdenum ore have been suggested, which include middlings grinding, sulfide minerals flotation, bacterial leaching of sulfide flotation tailings, liquid-phase extraction of dissolved copper and electrolysis of re-extraction eluates. The suggested combined method of cleaning of middlings of copper-molybdenum ores beneficiation provides the total copper recovery increase by 0.8% with a reduction of the cost price of saleable material by 0.5%.

关键词： Copper–molybdenum ore Beneficiation of middlings Flotation Bioleaching Combined flowsheet

Physiological and biochemical characteristic of Miscanthus×giganteus grown in heavy metal-oil sludge co-contaminated soil

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Journal of Environmental Sciences 2022年第5期34卷 114-125页

作者： Anna Muratova Yelena Lyubun irina Sungurtseva Olga Turkovskaya Asil Nurzhanova Institute of Biochemistry and Physiology of Plants and Microorganisms RAS Saratov 410015Russia Institute of Plant Biology and Biotechnology Almaty 050040Kazakhstan

The effect of oil sludge and zinc,present in soil both separately and as a mixture on the physiological and biochemical parameters of Miscanthus×giganteus plant was examined in a pot *** opposite effect of pollutants on the accumulation of plant biomass was established:in comparison with uncontaminated control the oil sludge increased,and Zn reduced the root and shoot *** sludge had an inhibitory effect on the plant photosynthetic apparatus,which intensified in the presence of *** specific antioxidant response of M.×giganteus to the presence of both pollutants was a marked increase in the activity of superoxide dismutase(mostly owing to oil sludge)and glutathione-S-transferase(mostly owing to zinc)in the *** participation of glutathione-S-transferase in the detoxification of both the organic and the inorganic pollutants was *** inhibited the activity of laccase-like oxidase,whereas oil sludge promoted laccase and ascorbate oxi-dase *** finding suggests that these enzymes play a part in the oxidative detox-ification of the organic *** both pollutants used jointly,Zn accumulation in the roots increased 6-fold,leading to increase in the efficiency of soil clean-up from the *** turn,Zn did not significantly affect the soil clean-up from oil *** study shows for the first time the effect of co-contamination of soil with oil sludge and Zn on the phys-iological and biochemical characteristics of the bioenergetic plant M.×*** data obtained are important for understanding the mechanisms of phytoremediation with this plant.

关键词： Miscanthus×giganteus Oil sludge Zinc Antioxidant enzymes Oxidative enzymes

In honor of John Bissett:authoritative guidelines on molecular identification of Trichoderma

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Fungal Diversity 2021年第2期107卷 1-69页

作者： Feng Cai irina S.Druzhinina Key Laboratory of Plant Immunity Nanjing Agricultural UniversityNanjingChina Fungal Genomics Laboratory(FungiG) Nanjing Agricultural UniversityNanjingChina Institute of Chemical Environmentaland Bioscience Engineering(ICEBE)TU WienViennaAustria International Subcommission on Taxonomy of Trichoderma(ICTT) ICTFIUMSNanjingChina

Modern taxonomy has developed towards the establishment of global authoritative lists of species that assume the standard-ized principles of species recognition,at least in a given taxonomic ***,in fungi,species delimitation is fre-quently subjective because it depends on the choice of a species concept and the criteria selected by a *** to it,identification of fungal species is expected to be accurate and precise because it should predict the properties that are required for applications or that are relevant in *** industrial and plant-beneficial fungi from the genus Tricho-derma(Hypocreales)offer a suitable model to address this collision between species delimitation and species identification.A few decades ago,Trichoderma diversity was limited to a few dozen *** introduction of molecular evolutionary methods resulted in the exponential expansion of Trichoderma taxonomy,with up to 50 new species recognized per ***,we have reviewed the genus-wide taxonomy of Trichoderma and compiled a complete inventory of all Trichoderma species and DNA barcoding material deposited in public databases(the inventory is available at the website of the Interna-tional Subcommission on Taxonomy of Trichoderma *** oderm ***).Among the 375 species with valid names as of July 2020,361(96%)have been cultivated in vitro and DNA ***,we have developed a protocol for molecular identification of Trichoderma that requires analysis of the three DNA barcodes(ITS,tef1,and rpb2),and it is supported by online tools that are available on *** *** then used all the whole-genome sequenced(WGS)Trichoderma strains that are available in public databases to provide versatile practical examples of molecular identification,reveal short-comings,and discuss possible *** on the Trichoderma example,this study shows why the identification of a fungal species is an intricate and laborious task that requires a background

关键词： Diversity DNA barcoding Hypocreales GCPSR Species concept Taxonomy Whole-genome sequencing

First Asian record of Panthera(Leo)fossilis(Mammalia,Carnivora,Felidae)in the Early Pleistocene of Western Siberia,Russia

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Integrative Zoology 2014年第4期9卷 517-530页

作者： Marina V.SOTNIKOVA irina V.FORONOVA Geological Institute of Russian Academy of Sciences MoscowRussia V.S.Sobolev Institute of Geology and Mineralogy Siberian Branch of Russian Academy of SciencesNovosibirskRussia

A lion-like pantherine felid is described as Panthera(Leo)fossilis from the late Early Pleistocene sediments of the Kuznetsk Basin(Western Siberia,Russia).The find of *** first recorded in Asia considerably extends the current notion of the eastward expansion of the most ancient *** Siberian lion is geologically the oldest form and is dimensionally among the largest members of the group of fossil lions on the Eurasian conti*** known by mandibular remains only,it is readily distinguished from Panthera(Leo)spelaea by a heavy built mandibular corpus with rectangular profile in the cheek teeth area,a deep,well-outlined and narrow anterior section of the masseteric fossa,and a largeр4 supported by a big unreduced anterior *** Siberian lion shares these features with the European Middle Pleistocene *** and the American Late Pleistocene P.(Leo)atrox,which suggests their close *** originated from *** and was isolated in North America south of the Late Pleistocene ice *** explains why the American lion has retained more primitive features than the coeval Eurasian cave lion P.(L.)spelaea.

关键词： Early Pleistocene evolution Panthera fossilis relationships Western Siberia