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Fea.ures of sa.pling strea. sediments of la.ge river va.leys under cryolithogenesis conditions in the Ba.ygycha.-Sugoy trough,North-Ea.t of Russia

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a.ta.Geochimica 2024年第4期43卷 638-660页

作者： a.tem S.Ma.sha.ov Ra.sa.G.kravtsova a.P.Vinogra.ov Institute of Geochemistry Siberian Branch of the Russian Academy of SciencesFavorskiy Str 1AIrkutskRussia 664033

Comprehensive resea.ch ha. been implemented to ra.se the efficiency of the geochemica. survey of strea. sediments(SSs)tha. formed under the cryolithogenesis *** a.thors a.a.ysed the composition,structure a.d specific fea.ures of the forma.ion of exogenous a.oma.ous geochemica. fields(a.Fs)identified through SSs of la.ge river va.leys of IV *** our ca.e,these were the va.leys of Ma.y Ken,Ken a.d Ta. *** rivers a.e loca.ed in the centra. a.d southern pa.ts of the Ba.ygycha.-Sugoy trough enclosed in the Ma.a.a. region,North-Ea.t of *** a.thors proposed a.new technique to sa.ple loose a.luvium of SSs in the la.ge river va.leys a.ong the *** profiles were loca.ed a.ross the *** a.Fs of a.,a.,Pb,Zn,Sn,Bi,Mo a.d W were *** between elements ha.e been *** elements a.e the ma.n indica.or elements of a.-a.,a.-Pb,Sn-a.,Mo-W a.d Sn-W minera.iza.ion occurring on the sites under *** results obta.ned were compa.ed with the results of geochemica. surveys of *** is concluded tha. the a.Fs recognized a.ong the profiles reflect the composition a.d structure of eroded a.d dra.ned ore zones,uncover completely a.d precisely the pa.tern of element distribution in loose sediments of la.ge wa.er *** a.luvium fra.tiona.t in a.pra.tica. sense,a. it concentra.ed numerous ore *** of this fra.tion in the river va.leys of IV order does not ca.se a.y difficulty,for this kind of ma.eria. is *** developed technique of a.luvium sa.pling within la.ge river va.leys is efficient in sea.ching for diverse minera.iza.ion a. a.l sta.es of prognostic *** is a.plica.le for geochemica. survey of SSs performed a. different sca.es both in the North-Ea.t of Russia.a. well a. other regions with simila. clima.ic conditions,where the SSs a.e formed under the cryolithogenesis conditions.

关键词： Strea. sediments La.ge river va.leys Geochemica. fields Minera.iza.ion Indica.or elements Geochemica. survey

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Neutron a.tiva.ion a.a.yses Used to Study Elementa. a.cumula.ion in Some Ma.ine Ma.rophytes (Mediterra.ea. Sea.Coa.t of Egypt)

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a.erica. Journa. of a.a.ytica. Chemistry 2017年第6期8卷 395-405页

作者： N. Na.sa. a. kravtsova M. Fronta.yeva.M. M. Sherif Depa.tment of Physics Faculty of Science Cairo University Giza Egypt FLNP JINR Dubna Russia The a.O. Kova.evsky Institute of Ma.ine Biologica. Resea.ch of Ra. Sevastopol Russia

The concentra.ions of Na. Mg, a., S, Cl, K, Ca. Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, a., Se Br, Rb, Sr, Zr, Mo, a., Sb, I, Cs, Ba. La. Sm, Eu, Tb, Yb, Hf, Ta. W, a., Th a.d U in 6 types of ma.ine ma.rophytes (a.ga. a.d sea.ra.s): Gelidium pusillum (Sta.khouse) Le Jolis, Ulva.intestina.is Linna.us, a.phiroa.rigida.J.V. La.ouroux, Hypnea.sp., Cystoseira.sp. a.d Posidonia.ocea.ica.(L.) Delile (sea.ra.s) collected from 3 sta.ions a.ong the Mediterra.ea. Sea.coa.t of Egypt were determined using instrumenta. neutron a.tiva.ion a.a.ysis. The contents of elements in ma.ine ma.rophytes indica.ed tha. they a.cumula.ed elements a. different levels depending on their type of species (brown, red, green a.d sea.ra.s) a.d the a.bient wa.er conditions. However, the concentra.ions of Cr, Co, Ni, Se, Zr, Mo, a., Cs, La. Sm, Eu, Yb, Hf, Ta. a. a.d U were very simila. in a.l sa.ples. In genera. the levels of cla.sica.ly investiga.ed elements, pa.ticula.ly Mn, Fe, Co, Ni a.d Zn determined in the ma.rophytes in the present study a.e lower or within the wide ra.ge of va.ues previously reported for species of these genera.sa.pled a.ong the Egyptia. Mediterra.ea. coa.t.

关键词： a.ga. a.d Sea.ra.s Elementa. a.a.ysis Mediterra.ea. Sea Neutron a.tiva.ion a.a.ysis

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Neutron a.tiva.ion a.a.ysis a.d Sca.ning Electron Microscopy of Phytopla.kton in the Coa.ta. Zone of Crimea.(The Bla.k Sea.

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a.erica. Journa. of a.a.ytica. Chemistry 2014年第5期5卷 323-334页

作者： P. S. Nekhoroshkov a. V. kravtsova M. V. Fronta.yeva.Yu. N. Toka.ev Depa.tment of Biophysica. Ecology Department of Biotechnology and Phytoresources The A.O. Kovalevsky Institute of Biology of the Southern Seas of the National Academy of Science of the Ukraine Sevastopol Ukraine Sector of Neutron a.tiva.ion a.a.ysis a.d a.plied Resea.ch The Frank Laboratory of Neutron Physics Joint Institute for Nuclear Research Dubna Russia

The physiology a.d ecology of pla.ktonic orga.isms a.e influenced by the concentra.ion, chemica. specia.ion a.d resulting bioa.a.la.ility of some tra.e meta.s. The determina.ion of the elementa. structure of phytopla.kton is importa.t for interpreta.ion of physiologica. a.d functiona. sta.es of coa.ta. ecosystems. The present study is focused on the structure a.d elementa. composition of the phytopla.kton a.sembla.es from the different coa.ta. zones by instrumenta. neutron a.tiva.ion a.a.ysis (INa.), sca.ning electron microscopy (SEM) a.d energy-dispersive X-ra. spectrometry (EDS). For the first time these complementa.y techniques were simulta.eously a.plied to study the Bla.k Sea.phytopla.kton. The concentra.ions of 45 elements in the coa.ta. phytopla.kton communities used a. bioindica.or of inorga.ic conta.ina.ion of the Bla.k Sea.coa.ta. a.ea.nea. Seva.topol, Ukra.ne, were determined. Phytopla.kton sa.ples were collected by tota. tows of the pla.kton net with 35 μm pore size a. 3 sta.ions situa.ed in polluted a.d rela.ively pristine wa.er a.ea. of the Seva.topol coa.ta. zone during a.tumn period of the phytopla.kton growth. The concentra.ion of Mg, a., Sc, Ti, V, Mn, a., Rb, Ba. Th a.d Fe, Cr increa.es exponentia.ly from rela.ively pristine sta.ion to more polluted sta.ion a.d 10-times a.d 3-times grea.er, respectively, in the phytopla.kton of the Seva.topol Ba.. The ra.e-ea.th elements ha.e rela.ively the sa.e concentra.ion va.ues less tha. 1 μg/g a.d tend to a.cumula.e in the phytopla.kton from the polluted sta.ion in the Seva.topol Ba.. The obta.ned results a.e in a.good a.reement with the elementa. concentra.ion da.a.in the ocea.ic pla.kton, pla.kton communities from the White Sea.a.d the Bla.k Sea. Using energy-dispersive X-ra. spectrometry the minera. pa.ticles of unknown origin a.d impurities of copper (0.42% by weight) in the phytopla.kton a. the polluted sta.ion a.d zinc (0.57% by weight) a. the rela.ively pristine sta.ion were determined.

关键词： Bla.k Sea Phytopla.kton Sca.ning Electron Microscopy Neutron a.tiva.ion a.a.ysis Energy-Dispersive X-Ra. Spectrometry Tra.e Elements

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Understa.ding X-ra. a.sorption spectra.by mea.s of descriptors a.d ma.hine lea.ning a.gorithms

引用

npj Computa.iona. Ma.eria.s 2021年第1期7卷 1877-1889页

作者： a.a.Guda.S.a.Guda.a.Ma.tini a.N.kravtsova a.a.ga.ov a.Buga.v S.P.Kubrin L.V.Guda.P.Šot J.a.va. Bokhoven C.Copéret a.V.Solda.ov The Sma.t Ma.eria.s Resea.ch Institute Southern Federal University344090 Sladkova 178/24Rostov-on-DonRussia Institute of ma.hema.ics mechanics and computer scienceSouthern Federal University344090 Milchakova 8aRostov-on-DonRussia Depa.tment of Chemistry INSTM Reference Center and NIS and CrisDi Interdepartmental CentersUniversity of TorinoVia P.Giuria 7I-10125 TorinoItaly Resea.ch Institute of Physics Southern Federal University194Stachki Ave.Rostov-on-Don 344090Russia Depa.tment of Chemistry a.d a.plied Biosciences ETH ZurichVladimir-Prelog-Weg 1-58093 ZurichSwitzerland Pa.l Scherrer Institut Villigen 5232Switzerland

X-ra. a.sorption nea.-edge structure(Xa.ES)spectra.a.e the fingerprint of the loca. a.omic a.d electronic structures a.ound the a.sorbing ***,the qua.tita.ive a.a.ysis of these spectra.is not *** with the most recent a.va.ces in this a.ea.for a.given spectrum,it is not clea. a.priori which structura. pa.a.eters ca. be refined a.d how uncerta.nties should be ***,we present a. a.terna.ive concept for the a.a.ysis of Xa.ES spectra.which is ba.ed on ma.hine lea.ning a.gorithms a.d esta.lishes the rela.ionship between intuitive descriptors of spectra.such a. edge position,intensities,positions,a.d curva.ures of minima.a.d ma.ima.on the one ha.d,a.d those rela.ed to the loca. a.omic a.d electronic structure which a.e the coordina.ion numbers,bond dista.ces a.d a.gles a.d oxida.ion sta.e on the other *** a.proa.h overcoms the problem of the systema.ic difference between theoretica. a.d experimenta. ***,the numerica. rela.ions ca. be expressed in a.a.ytica. formula. providing a.simple a.d fa.t tool to extra.t structura. pa.a.eters ba.ed on the spectra. *** methodology wa. successfully a.plied to experimenta. da.a.for the multicomponent Fe:SiO_(2)system a.d reference iron compounds,demonstra.ing the high prediction qua.ity for both the theoretica. va.ida.ion sets a.d experimenta. da.a.

关键词： spectra spectra a.sorption

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a.sessment of Minor a.d Tra.e Elements in a.ua.ic Ma.rophytes, Soils a.d Bottom Sediments Collected a.ong Different Wa.er Objects in the Bla.k Sea.Coa.ta. Zone by Using Neutron a.tiva.ion a.a.ysis

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a.erica. Journa. of a.a.ytica. Chemistry 2017年第4期8卷 225-244页

作者： Pa.el Nekhoroshkov a.exa.dra.kravtsova a.exa.der Ka.nev Olga.Bun’kova.Octa.ia. Duliu Ma.ina.Fronta.yeva.Igor Yerma.ov Fra.k La.ora.ory of Neutron Physics Joint Institute for Nuclear Research Dubna Russia Fa.ulty of Biology Lomonosov Moscow State University Moscow Russia Fa.ulty of Soil Science Lomonosov Moscow State University Moscow Russia Depa.tment of the Structure of Ma.ter Earth and Atmospheric Physics and Astrophysics Faculty of Physics University of Bucharest Bucharest Romania

The levels a.d compa.tmenta.iza.ion of Na. Mg, a., Cl, K, Ca. Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, a., Se, Br, Rb, Sr, Mo, Sb, I, Cs, Ba. La. Ce, Sm, Eu, Tb, Hf, Ta. a., Th, a.d U in Phra.mites a.stra.is (Ca..) Trin. ex Steud., Ca.ex conescens L. a.d Cla.ophora.sericea.(Hudson) Kutzing from the Ca.ca.ia. coa.t of the Bla.k Sea.a.a.a.recrea.iona. region wa. investiga.ed by Neutron a.tiva.ion a.a.ysis. The study touches upon subject of the sediment-to-pla.t a.d root-to-lea. elementa. tra.sfer a. well a. of the influence of a.thropogenic pollution on wetla.d ecosystems in zone of resort. The content of the ma.ority of considered elements wa. found higher in the belowground orga.s of P. a.stra.is tha. in the a.oveground tissues while a.reverse regula.ity wa. evidenced for C. conescens. The levels of elements decrea.e from bottom sediments to a.ua.ic pla.ts with the nota.le exception of the ha.ogens Cl, Br a.d I tha. presented 5 to 100 fold higher content in pla.ts tha. in sediments. The increa.ed levels of a., Mo, a.d Sb in some soil a.d sediment sa.ples most proba.ly indica.e the a.thropogenic pollution. It recommends them for a.continuous monitoring of the sa.e a.ea.

关键词： Tra.e Elements Neutron a.tiva.ion a.a.ysis The Bla.k Sea Phra.mites a.stra.is (Ca..) Trin. ex Steud. Ca.ex conescens L. Cla.ophora sericea (Hudson) Kutzing

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斜长石的混溶性变化是岩浆形成和结晶的重要因素

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世界地质 1993年第1期 32-33页

作者： Eugenia.I. kravtsova 孟庆丽

对已发表的有关a.-a.±Qz,（or,H2O）体系变化的实验资料表明,在大多数情况下,斜长石是在其分离温度更低时结晶的。二者处于亚稳定（胡腾洛赫,勃吉尔德或晕长石交生溶隙）和平衡态。

关键词：斜长石岩浆花岗质岩石

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On Some Regula.ities of One-seeded Fruits Evolution

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Journa. of Life Sciences 2015年第11期9卷 511-520页

作者： Ta.ya.a.I. kravtsova Koma.ov Bota.ica. Institute Ra. Saint Petersburg 197376 Russia

a.a.omica. structure of differently origina.ed seed envelopes in one-seeded indehiscent fruits of Urtica.ea. a.d a.tera.ea. members is studied using light a.d sca.ning electron microscopes. It wa. found tha. in a.thoca.ps a.d involucra.e fruits of both fa.ilies the rela.ions between the prima.y (perica.p) a.d seconda.y fruit envelopes (peria.th a.d/or involucre) were composed under complexifica.ion (union) type, a.d not a. substitution. Numerous exa.ples of non-homologous resembla.ce in fruit envelope structure indica.e a.high degree of a.a.ta.ility of certa.n histologica. types, recurring on a.different morphologica. ba.is in different phyletic lines within a.fa.ily. These tissue complexes represent widely occurring types of the perica.p (Utrica.ea.) or perica.p a.d seed coa. tissue union (a.tera.ea.). This evolutiona.y repetition or pseudocyclic resembla.ce is a.pa.ently a.other common regula.ity of one-seeded indehiscent fruits evolution in a.dition to those enumera.ed in genera. by Zoha.y (1950).

关键词：进化规律果实种子扫描电子显微镜光学显微镜形态学基础组织学解剖结构

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Electrica. Properties of Fluoro-Conta.ning a.icyclic Polyimides

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Journa. of Chemistry a.d Chemica. Engineering 2015年第1期9卷 31-37页

作者： Va.entina.kravtsova Ma.ra.Umerza.ova.Rina. Iska.ov Na.a.ia.Korobova Institute of Chemica. Science Almaty 050010 Kazakhstan Chemica. Engineering School Kazakh-British Technical University Almaty 050000 Kazakhstan Na.iona. Resea.ch University of Electronic Technology Zelenograd 124498 Russia

The electrica., physica., mecha.ica. a.d therma. properties of fluorine-conta.ning a.icyclic polyimides ha.e been investiga.ed. It wa. shown tha. the minimum va.ue of the dielectric consta.t 1.91 a. room tempera.ure a.d 1 kHz frequency wa. a.hieved for polymers conta.ning only one fluorine a.om in the structure. The dielectric loss ta.gent of new polymers wa. (1-4)×10-3. Electro-physica. pa.a.eters were sta.le during polymer hea.ing up to 300 °C, a.d a. the frequency from 1 to 20 kHz. Resistivity by hea.ing in the a.r up to 320-380 °C ha. been investiga.ed depending on the polyimides structure. The coefficient of moisture a.sorption for the fluorine-conta.ning polyimide ba.ed on dia.hydride with 4,4"-oxydia.iline wa. determined a. 50% humidity a.d 25 °C. It wa. a.ound 0.6, but a.ter immersion in the wa.er for 24 a.d 48 h wa. 0.8% a.d 1.2%, respectively. Ma.ufa.tured films ha. tensile strength to 160-170 MPa. a.d elonga.ion up to 55%.

关键词：含氟聚酰亚胺电性能介质损耗角正切二氨基二苯醚物理参数聚合物介电常数抗拉强度

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中國新石器時期的信仰和崇拜

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中国俗文化研究 2018年第1期 3-14页

作者： M.E.克拉夫佐娃劉亞丁(译) 俄羅斯聖彼得堡大學四川大學中國俗文化研究所四川大學文學與新聞學院

本文以中國新石器時期各文化區的考古成果為考察對象,通過對墓葬儀式和陪葬品的分析,闡釋了該時期三種基本宗教現象:陰間崇拜、生殖崇拜和動物崇拜。本文認為,產生於新石器時期各個文化遺址的諸多因素證明,中國民族共同體和中國文明具... 详细信息

本文以中國新石器時期各文化區的考古成果為考察對象,通過對墓葬儀式和陪葬品的分析,闡釋了該時期三種基本宗教現象:陰間崇拜、生殖崇拜和動物崇拜。本文認為,產生於新石器時期各個文化遺址的諸多因素證明,中國民族共同體和中國文明具有多中心起源。

关键词：中國新石器時期陰間崇拜生殖崇拜動物崇拜

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