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Elucidating elusive quaternary selenide EuCeCuSe3:Synthesis,crystal structure,properties and theoretical studies

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Journal of Rare Earths 2024年第1期42卷 163-171,I0006页

作者： Maxim V.Grigoriev Anna V.Ruseikina Maxim S.Molokeev Vladimir A.Chernyshev Aleksandr S.Aleksandrovsky Alexander S.Krylov Svetlana N.Krylova Nikolai P.Shestakov Dmitriy A.Velikanov Alexander A.Garmonov Alexey V.Matigorov Evgeny A.Ostapchuk Thomas Schleid Damir A.Safin Laboratory of Theory and Optimization of Chemical and Technological Processes University of TyumenVolodarskogo Str.6625003TyumenRussian Federation Kirensky Institute of Physics Federal Research Center KSC SB RASAkademgorodok 50 Bld.38660036KrasnoyarskRussian Federation Department of Physics Far Eastern State Transport UniversitySerysheva Str.47680021KrasnoyarskRussian Federation Institute of Natural Sciences and Mathematics Ural Federal University Named After the First President of Russia B.N.YeltsinMira Str.19620002EkaterinburgRussian Federation Department of Photonics and Laser Technology Siberian Federal UniversitySvobodnii Ave.79660079KrasnoyarskRussian Federation Institute of Physics and Technology University of TyumenVolodarskogo Str.6625003 TyumenRussian Federation Institute for Inorganic Chemistry University of StuttgartPfaffenwaldring 55D-70569StuttgartGermany Scientific and educational and Innovation Center for Chemical and Pharmaceutical Technologies Ural Federal University named after the First President of Russia B.N.YeltsinMira Str.19620002 EkaterinburgRussian Federation University of Tyumen Volodarskogo Str.6625003TyumenRussian Federation

We report on the novel heterometallic quaternary selenide EuCeCuSe3,the fabrication of which has been a challenge until this *** structure of the reported selenide was elucidated from the powder X-ray diffraction data,which revealed the formation of EuCeCuSe3with excellent yield(96.7%)accompanied with a minor fraction of CeSe2(3.3%),and was best solved in orthorhombic space group Pnma with the BaLaCuS3structural ***,the crystal structure of the title compound completes the row of the heterometallic quaternary selenides EuRECuSe3(RE=La,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Y),of which the cerium-based derivative exclusively belongs to the BaLaCuS3structural *** distortion of the CuSe4polyhedron was compared for the whole series of EuRECuSe3compounds using theτ4-descriptor for four coordinated ions,which revealed the highest degree of distortion for the Ce3+-containing selenide,followed by the La3+-based ***,the crystallographic and geometrical parameters of the reported selenide were discussed in comparison to the Ce3+-based sulfides SrCeCuS3and *** initio calculations of the crystal structure,a phonon spectrum and elastic constants for the crystal of EuCeCuSe3were also *** types and wavenumbers of fundame ntal modes were determined and the involvement of ions participating in the phonon modes was *** experimental IR spectrum of the reported selenide was interpreted and found to be in agreement with the calculated *** experimental direct band gap of EuCeCuSe3was measured to be 1.36 eV that is consistent with the concept of its origin due to interband transitions between orbitals emerging mainly from 4f(valence band)and 5d(conduction band)levels of the Eu2+*** dependence of the Young’s modulus on the direction demonstrates the anisotropy of the elastic properties,while the Vickers hardness for EuCeCuSe3was calculated to be 5.2 ***,the title compound is paramagnetic above 4 K.

关键词： Quaternary selenide Synthesis Crystal structure Ab initio calculations Magnetic measurements Spectroscopy

Evaluation of the efficiency of fixed assets of economic sectors based onindex analysis

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Journal of Management Analytics 2022年第3期9卷 369-382页

作者： Alisa Ableeva Guzel Salimova Tatiana Lubova Almira Farrahetdinova Raisa Siraeva Department of Accounting Statistics and Information Systems in EconomyFederal State Budgetary Educational Establishment of Higher Education“Bashkir State Agrarian University”UfaRussia

This article is devoted to the study of the system of indicators characterizing thevolume, structure and efficiency of the functioning of fixed assets of theproduction and non-production areas of the region based on the index *** factorial index analysis, models of the relationship between the grossregional product, the cost of fixed assets and capital productivity (capitalintensity) of industries producing goods and providing services were obtained,to identify reserves for increasing of the analyzed indicators. The obtainedresults indicate a trend towards significant decrease in capital productivity inthe production sector, which should become the basis for making managerialdecisions at the regional level to attract investment. They can be used in thepractice of macroeconomic analysis and forecasting, for detailing the factors fordetermining the potential of economic sectors, the efficiency of using fixedassets, and attracting investments.

关键词： gross regional product factor index analysis capital productivity capital intensity

Assessment of the ecological state of haplic chernozem contaminated by oil,fuel oil and gasoline after remediation

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Petroleum Research 2024年第1期9卷 155-164页

作者： Anna Ruseva Tatiana Minnikova Sergey Kolesnikov Dmitry Trufanov Nikita Minin Sofya Revina Vladimir Gayvoronsky Southern federal University Academy of Biology and Biotechnology344090Rostov-on-DonRussia

The intensive use of petroleum hydrocarbon products has made them priority environmental *** petroleum hydrocarbons enter the soil,a change in physical,chemical,and biological properties is *** natural restoration of oil-contaminated soils is a lengthy process;therefore,remediation is often *** aim of this study is to assess the change in the ecological state of haplic chernozem soil contaminated with oil,fuel oil,and gasoline after *** indicators of soil biological activity,such as phytotoxicity(germination,length of shoots and roots),the activity of oxidoreductase enzymes(catalase and dehydrogenases),and the total number of bacteria were *** effects of nitroammophoska fertilizer,sodium humate,biochar,and the biofertilizer“Baikal EM-1”on the ecological state of soils contaminated with oil,fuel oil,and gasoline were *** with oil,fuel oil,and gasoline decreased the values of all biological *** most sensitive indicator was the length of radish roots in soils polluted with oil,gasoline,and fuel oil after remediation with nitroammophoska and Baikal EM-1 *** length of roots was the most sensitive indicator when remediation was performed with biochar and sodium humate added to soil contaminated with oil and gasoline,and with contamination of haplic chernozem soil with fuel oil,the total number of bacteria was the most sensitive *** most effective ameliorant to phytotoxicity indicators for oil pollution was a 1 D dose of biochar,for fuel oil it was 1 D biochar and 2 D sodium humate,and for gasoline it was a 2 D dose of biochar and Baikal *** ameliorants at most of the studied doses increased dehydrogenase activity,but increased catalase activity only in some *** increase in the total number of bacteria in oil-contaminated soils was promoted by biochar and nitroammophoska at a dose of 2 *** was the most effective in ameliorant in soils contaminated with fuel

关键词： Pollution Petroleum hydrocarbons Haplic chernozem Ameliorant dose Biological indicators Soil properties

The identification of individuals with hatchery and natural origin in a mixed sample of Amur River chum salmon by Otolith microchemistry

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Aquaculture and Fisheries 2023年第3期8卷 341-350页

作者： Pavel B.Mikheev Denis V.Kotsyuk Elena V.Podorozhnyuk Vsesolod N.Koshelev Atbkyh I.Nikiforov Tatiana A.Sheina Alexey Yu.Puzik Mikhail A.Baklanov Khabarovsk Branch of the federal state Budget Scientific institution“Russian federal Research Institute of Fisheries and Oceanography”(“KhabarovskNIRO”) Khabarovsk680038Russia federal state Budget educational institution of higher education“Perm state National Research University”(PGNIU) Perm614990Russia Moscow state Institute(University)of International Relations Ministry of Foreign Affairs of the Russian FederationMoscow117454Russia

We estimated the proportion of hatchery and natural fall spawning chum salmon returning to the Amur River using chemical markers specific to hatchery-origin *** used otolith microchemistry technique to identify fish with artificial origin among returning ***,we found that juveniles of artificial origin had higher values of the Sr:Ca molar ratio of the otoliths’edge zone compared with juveniles of natural origin,what can be related to the use of rearing feed produced from raw materials of marine origin rich in *** we observed that most of the spawners from Anyuisky Hatchery and from the Amur River mouth at the start of the spawning migration has also the higher value of Sr:Ca molar ratio of the juvenile zone of ***,adults with higher values of the Sr:Ca molar ratio are characterized by a skewed right in the peak of the age ***,the age structure and phenological shift in the time of spawning migration of individuals with higher value of the used chemical marker corresponds to results of studies on hatchery-produced chum salmon completed at different parts on Northern *** results of this study will be used in the management of Amur fall chum salmon fisheries,and also demonstrates the necessity of the development of specific measures for increasing the survival of juvenile anadromous salmonids released at large rivers and exposed to prolonged freshwater migration to the *** a further application of the methodology,we plan to identify the markers specific to each of the hatcheries and main spawning tributaries belonging to Amur River *** will be an important step in the evaluation of the contribution of different stocks in mixed fisheries and also in the estimation of the effect of hatchery releases on naturally spawning stocks of Amur fall *** to,our results may indicate the applicability of this approach for the determination of artificial-origin fish in a mixed sample of the Amur fall

关键词： Otolith microchemistry LA ICP-MS Chum salmon Identification of origin in a mixed sample Hatchery releases

Supercritical Fluid Media in Challenges of Substance and Material Dispersion

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Journal of Thermal Science 2019年第3期28卷 519-546页

作者： KHAIRUTDINOV Vener GUMEROV Farid KHABRIEV Ilnar federal state Budgetary educational institution of higher education Kazan National Research Technological University

The paper deals with the problem of material dispersion using supercritical fluid media. At the same time, emphasis is made on modifications(SAS, GAS, SEDS and ASES) of the supercritical fluid anti-solvent method of dispersion. The results of SAS method implementation for dispersion of pure polycarbonate and polycarbonate doped with "CdSe/CdS-core/shell" quantum dots(carried out in the pressure range of 8.0-25.0 MPa at temperatures of 313.15 K and 358.15 K) are submitted. The range of the operating parameters has been established through the example of pure polycarbonate dispersion, which provides the production of nanoparticles with the size range of 10-100 nm. Encapsulation of Cd Se/Cd S quantum dots into polycarbonate using the SAS method has no effect on optical properties of the encapsulated quantum dots. The results of paracetamol dispersion using the SEDS method are presented. The effect of operating conditions of the paracetamol dispersion process on morphology of the obtained product is described. Co-dispersion of ethylene–vinyl acetate copolymers and low-density polyethylene mixtures by SEDS method has been carried out under pressures of 8.0-25.0 MPa at temperatures of 313 K, 323 K, and 333 K. The comparison of melting and crystallization between the resulting copolymer mixtures and mixtures with the same composition obtained by mixing in the liquid melt, has shown that implementation of SEDS results in an increase of crystallinity degree of the polymer mixtures.

关键词： supercritical fluid media supercritical fluid anti-solvent method dispersion polycarbonate paracetamol ethylene-vinyl acetate copolymers

Genetic diversity and differentiation among populations of the pedunculate oak(Quercus robur)at the eastern margin of its range based on a new set of 95 SNP loci

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Journal of Forestry Research 2021年第5期32卷 2237-2243页

作者： Bernd Degen Yulai Yanbaev Ruslan Ianbaev Svetlana Bakhtina Albina Tagirova Institute of Forest Genetics GrosshansdorfGermany federal state Budgetary educational Establishment of higher education“Bashkir state Agrarian University” UfaRussia federal state Budgetary educational Establishment of higher education“Bashkir state University” UfaRussia

The aim of this study is to determine the genetic variability and differentiation among populations of pedunculate oak(Quercus robur)at the eastern margin of the species distribution *** applied new set of 95 geographically informative nuclear SNP(single nucleotide polymorphism)loci developed using Double Digest Restriction Site Associated DNA(ddRAD),a new generation DNA sequencing *** study area is located in the basins of the Volga River and its two main tributaries,Kama and *** the strong reduction and fragmentation of pedunculate oak forests over the last several centuries and comparatively small sizes of present stands,a relatively similar genetic diversity of seven populations was observed(on average,allelic diversity v_(a)=1.472-1.603,observed heterozygosity H_(O)=0.305-0.358,expected heterozygosity H_(E)=0.272-0.343).The genetic distances between populations vary between 0.102 and 0.170(on average,d_(0)=0.128).We have identified the absence of a spatial genetic structure and the existence of genetically peculiar populations in the territory *** genetic distances of Gregorius between populations vary between 0.102 and 0.170(on average,d_(0)=0.128).Genetic differentiation among populations was statistically significant with a mean of the fixation index FST of *** from the Privolzhye Upplands and from northern parts of the study area make the most contribution to overall inter-population differentiation(d_(0)=0.137).No significant differences exist among the samples at lowlands along the Volga river(d_(0)=0.110).It was concluded that the multiplicity and different ages of local populations and the complexity of migration routes of the pedunculate oak from Pleistocene refugia and secondary Holocene shelters can cause this phenomenon.

关键词： Population Quercus robur Gene pool Single nucleotide polymorphism

Dynamics of annual growth of Pinus sylvestris on industrial wastes of mining companies

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Journal of Forestry Research 2021年第4期32卷 1385-1393页

作者： Svetlana Bakhtina Yulai Yanbaev Aleksey Kulagin Nina Redkina Ilgam Masalimov Shamil Fayzrakhmanov Scientific and educational Center Federal State Budgetary Educational Institution of Higher EducationBashkir State Agrarian University50-Letia Octyabrya Str.34UfaRussia 450001 Department of Forestry and Landscape Design Federal State Budgetary Educational Establishment of Higher EducationBashkir State Agrarian University50-Letia Octyabrya Str.34UfaRussia 450001 Laboratory of Forestry Ufa Institute of BiologyUfa Research Center of Russian Academy of SciencesProspect Octyabrya69UfaRussia 450054 Department of Ecology and Life Safety Federal State Budgetary Educational Institution of Higher EducationBashkir State UniversityZaki Validi Str.32UfaRussia 450076 Department of Mechanics and Engineering Graphics Federal State Budgetary Educational Establishment of Higher EducationBashkir State Agrarian University50-Letia Octyabrya Str.34UfaRussia 450001 Department of Mechanics and Machine Design Federal State Budgetary Educational Establishment of Higher EducationBashkir State Agrarian University50-Letia Octyabrya Str.34UfaRussia 450001

The development of the mining industry has led to the appearance in many parts of the world of vast technogenic territories from which toxic heavy metals enter the environment and food ***,chemical,and biological methods of cleaning industrial land due to technological complexity and hi gh cost are relatively little used on a large *** forest overgrowth of mining sites and the removal of heavy metals by woody plants can be an effective form of ***,the study of this process is of significant scientific and practical *** analysis of the annual growth in height and width of the annual rings of the stem of Scots pine(Pinus sylvestris L.) in 2004-2019 was made on the territory of the Uchalinsky mining and processing plant(South Ural,Russia) contaminated with heavy *** hi gh concentrations of copper and zinc were found in soils,roots,bark,young shoots,comparable to exceeding the maximum allowable *** the spatial uniformity of the heavy metal content in the stands,the tree samples significantly differed in terms of annual *** suggest that the lack of nutrients and not stress from exposure to heavy metals is the main reason for relatively low growth rates on slopes of industrial *** was confirmed by studying the annual growth in height of the undergrowth in habitats with different soil cover *** data prove the relatively high potential of Scots pine for the natural recovery of industrial lands polluted with heavy metals by mining enterprises.

关键词： Annual growth Pinus sylvestris Heavy metals Phytoremediation

Using a needle for sacrospinous ligament fixation for pelvic organ prolapse based on the Miyazaki technique

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Gynecology and Obstetrics Clinical Medicine 2022年第2期2卷 82-85页

作者： Ilnur Irekovich Musin Alfiya Galimovna Yashchuk Valentin Nikolaevich Pavlov Jianliu Wang Xiuli Sun Raisa Arkadevna Naftulovich Elena Mikhailovna Popova federal state Budgetary educational institution of higher education Bashkir state Medical University of the Ministry of Health of the Russian Federation Lenina 3UfaRepublic of Bashkortostan450008Russia Department of Obstetrics and Gynecology Peking University People's Hospital11th Xizhimen South StreetXicheng DistrictBeijing100044China

Background:Approximately 7%of all women will require surgery to correct pelvic organ prolapse during their *** these,approximately 10%-13%will require another operation within 5 years due to recurrence of the *** in life expectancy and elderly individuals with estrogen deficiencies will mean higher rates of pelvic organ prolapse,significantly reducing the quality of life for millions of *** study introduces technologies that can help treat pelvic prolapse while reducing the rate of ***:This paper outlines how to properly perform sacrospinous ligament fixation using the Miyazaki ***:A needle was used to successfully perform a sacrospinous ligament fixation using Miyazaki's ***:Considering the Food and Drug Administration’s 2019 decision to permit surgeries with native tissue,this method can be used with sacrospinous ligament fixation as the primary treatment option for pelvic organ prolapse.

关键词： Pelvic organ prolapse Sacrospinous ligament fixation Sacrocolpopexy Pelvic surgery

Technological monitoring of subgrade construction on high-temperature permafrost

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Research in Cold and Arid Regions 2015年第4期7卷 316-322页

作者： Svyatoslav Ya.Lutskiy Taisia V.Shepitko Alexander M.Cherkasov federal state-Funded educational institution of higher Vocational education Moscow State University of Railway Engineering MGUPS (MIIT)

Three stages of complex technological monitoring for the increase of high-temperature-permafrost soil bearing capacity are described. The feasibility of process monitoring to improve the targeted strength properties of subgrade bases on frozen soils is demonstrated. The rationale for the necessity of predictive modeling of freeze-thaw actions during the subgrade construction period is provided.

关键词： permafrost soils subgrade monitoring bearing capacity complex technology