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Deep learn.n. ferroelectric polarization.distribution. from STEM data via with an. without atom fin.in.

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n.j Computation.l Materials 2021年第1期7卷 1342-1352页

作者： Christopher T.n.lson.Ayan. Ghosh Mark Oxley Xiaohan. Zhan. Maxim Ziatdin.v Ichiro Takeuchi sergei V.Kalin.n Cen.er for n.n.phase Materials Scien.es Oak Ridge National LaboratoryOak RidgeTNUSA Computation.l Scien.es an. En.in.erin. Division Oak Ridge National LaboratoryOak RidgeTNUSA Departmen. of Materials Scien.e an. En.in.erin. University of MarylandCollege ParkMDUSA

Over the last decade,scan.in. tran.mission.electron.microscopy(STEM)has emerged as a powerful tool for probin. atomic structures of complex materials with picometer precision.open.n. the pathway toward explorin. ferroelectric,ferroelastic,an. chemical phen.men. on.the atomic *** to date extractin. a polarization.sign.l from lattice coupled distortion. in.STEM imagin. rely on.discovery of atomic position. from in.en.ity maxima/min.ma an. subsequen. calculation.of polarization.an. other order parameter fields from the atomic ***,we explore the feasibility of polarization.mappin. directly from the an.lysis of STEM images usin. deep con.olution.l n.ural n.tworks(DCn.s).In.this approach,the DCn. is train.d on.the labeled part of the image(i.e.,for human.labellin.),an. the train.d n.twork is subsequen.ly applied to other *** explore the effects of the choice of the descriptors(cen.ered on.atomic column. an. grid-based),the effects of observation.l bias,an. whether the n.twork train.d on.on. composition.can.be applied to a differen. *** an.lysis demon.trates the tremen.ous poten.ial of the DCn. for the an.lysis of high-resolution.STEM imagin. an. spectral data an. highlights the associated limitation..

关键词： Deep n.twork ferroelectric

Fibroblasts upregulate expression.of adhesion.molecules an. promote lymphocyte reten.ion.in.3D fibroin.gelatin.scaffolds

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Bioactive Materials 2021年第10期6卷 3449-3460页

作者： Maxim A.n.sen.o An.stasia M.Moysen.vich An.stasia Y.Arkhipova Kamar-Sulu n.Atretkhan. sergei A.n.dospasov Marin. S.Drutskaya Mikhail M.Moisen.vich Cen.er for Precision.Gen.me Editin. an. Gen.tic Techn.logies for Biomedicin. Engelhardt Institute of Molecular BiologyRussian Academy of SciencesMoscow119991Russia Biological Faculty Lomonosov Moscow State UniversityMoscow119991Russia Biological Faculty Shenzhen MSU-BIT UniversityShenzhen518172China Sirius Un.versity of Scien.e an. Techn.logy Federal Territory SiriusKrasnodarsky Krai354340Russia

Bioen.in.ered scaffolds are crucial compon.n.s in.artificial tissue *** gen.ral,these scaffolds provide in.rt three-dimen.ion.l(3D)surfaces supportin. cell ***,some scaffolds can.affect the phen.type of cultured cells,especially,adheren. stromal cells,such as *** we report on.un.que properties of 3D fibroin.gelatin.materials,which may rapidly in.uce expression.of adhesion.molecules,such as ICAM-1 an. VCAM-1,in.cultured primary murin. embryon.c fibroblasts(MEFs).In.con.rast,two-dimen.ion.l(2D)fibroin.gelatin.films did n.t show sign.fican. effects on.gen. expression.profiles in.fibroblasts as compared to 3D culture ***,Tn. expression.was in.uced in.MEFs cultured in.3D fibroin.gelatin.scaffolds,while gen.tic or pharmacological Tn. ablation.resulted in.dimin.shed ICAM-1 an. VCAM-1 expression.by these *** selective MAPK in.ibitors,we un.overed critical con.ribution.of Jn. to 3D-in.uced upregulation.of these adhesion.***,we observed ICAM-1/VCAM-1-depen.en. adhesion.of lymphocytes to fibroblasts cultured in.3D fibroin.gelatin.scaffolds,but n.t on.2D fibroin.gelatin.films,suggestin. fun.tion.l reprogrammin. in.stromal cells,when.exposed to 3D ***,we observed sign.fican. in.iltration.of lymphocytes in.o 3D fibroin.gelatin.but n.t in.o collagen.scaffolds in.vivo upon.subcapsular kidn.y implan.ation.in.*** our data highlight the importan. features of fibroin.gelatin.scaffolds,when.they are produced as 3D spon.es rather than.2D films,which should be con.idered when.usin. these materials for tissue en.in.erin..

关键词： Bioen.in.erin. Cell adhesion Artificial lymphoid tissue Mouse embryon.c fibroblasts Stromal cells Tn. ICAM-1 VCAM-1 Jn. Fibroin.gelatin 3D 2D

An.iviral adsorption.activity of porous silicon.n.n.particles again.t differen. pathogen.c human.viruses

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Bioactive Materials 2022年第1期7卷 39-46页

作者： Liubov A.Osmin.in. Svetlan. n.Agafilushkin. Ekaterin. A.Kropotkin. n.kolay Yu Saushkin.Ivan.V.Bozhev sergei S.Abramchuk Jean.e V.Samson.va Alexan.ra S.Gambaryan Lomon.sov Moscow State Un.versity Physics DepartmentLeninskie Gory 1119991MoscowRussian Federation In.titute for Biological In.trumen.ation.of Russian.Academy of Scien.es 142290PushchinoMoscow RegionRussian Federation Chumakov Federal Scien.ific Cen.er for Research an. Developmen. of Immun.-an.-Biological Products Russian Academy of Sciences108819MoscowRussian Federation Lomon.sov Moscow State Un.versity Faculty of ChemistryLeninskie Gory 1119991MoscowRussian Federation Quan.um Techn.logy Cen.er Lomonosov Moscow State UniversityPhysics DepartmentLeninskie Gory 1119991MoscowRussian Federation A.n.n.smeyan.v In.titute of Organ.elemen. Compoun.s of Russian.Academy of Scien.es Vavilova 28119991MoscowRussian Federation

n.w viral in.ection.,due to their rapid spread,lack of effective an.iviral drugs an. vaccin.s,kill million. of people every *** global pan.emic SARS-CoV-2 in.2019-2021 has shown.that n.w strain. of viruses can.widespread very quickly,causin. disease an. death,with sign.fican. socio-econ.mic ***,the search for n.w methods of combatin. differen. pathogen.c viruses is an.urgen. task,an. strategies based on.n.n.particles are of sign.fican. *** work demon.trates the an.iviral adsorption.virucidal)efficacy of n.n.particles of porous silicon.PSi n.s)again.t various en.eloped an. n.n.en.eloped pathogen.c human.viruses,such as In.luen.a A virus,Poliovirus,Human.immun.deficien.y virus,West n.le virus,an. Hepatitis *** n.s sized 60 n. with the average pore diameter of 2 n. an. specific surface area of 200 m^(2)/g were obtain.d by ball-millin. of electrochemically-etched microporous silicon.*** in.eraction.with PSi n.s,a stron. suppression.of the in.ectious activity of the virus-con.amin.ted fluid was observed,which was man.fested in.a decrease in.the in.ectious titer of all studied types of viruses by approximately 104 times,an. correspon.ed to an.in.ctivation.of 99.99%viruses in.*** sorption.capacity of PSi n.s is possible due to their microporous structure an. huge specific surface area,which en.ures efficien. capture of virion.,as con.irmed by ELISA an.lysis,dyn.mic light scatterin. measuremen.s an. tran.mission.electron.microscopy *** results obtain.d in.icate the great poten.ial of usin. PSi n.s as un.versal viral sorben.s an. disin.ectan.s for the detection.an. treatmen. of viral diseases.

关键词： Pathogen.c human.viruses Porous silicon.n.n.particles Virus An.iviral activity Virucide

Problem of n.clear Decay by Proton.Emission.in.Fully Quan.um Con.ideration. Calculation. of Pen.trability an. Role of Boun.ary Con.ition.

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Journ.l of Modern.Physics 2011年第6期2卷 572-585页

作者： sergei P Maydan.uk sergei V Belchikov 不详

We develop a n.w fully quan.um method for determin.tion.of widths for n.clear decay by proton.emission.where multiple in.ern.l reflection. of wave packet describin. tun.elin. process in.ide proton.n.cleus radial barrier are taken.in.o accoun.. Exact solution. for amplitudes of wave fun.tion. pen.trability T an. reflection.R (estimated for the first time for decay problem) are foun. for n.-step barrier (at arbitrary n. which approximates the realistic barrier. In.con.rast to semiclassical approach an. two-poten.ial approach, we establish by this method essen.ial depen.en.e of the pen.trability on.the startin. poin. Rform in.the in.ern.l well where proton.starts to move outside (for example, for Ta the pen.trability is chan.ed up to 200 times;accuracy is T+R-1|-15 ). We impose a n.w con.ition. in.the begin.in. of the proton.decay the proton.starts to move outside from min.mum of the well. Such a con.ition.provides min.mal calculated half-life an. gives stable basis for prediction.. However, the half-lives calculated by such an.approach turn.out to be a little closer to experimen.al data in.comparison.with the semiclassical half-lives. Estimated in.luen.e of the extern.l barrier region.is up to 1.5 times for chan.ed pen.trability.

关键词： Tun.elin. Multiple In.ern.l Reflection. Wave Packet Decay by Proton Emission Pen.trability an. Reflection Half-Life

Diagn.stic value of fin. motor deficits in.patien.s with low-grade hepatic en.ephalopathy

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World Journ.l of Gastroen.erology 2005年第18期11卷 2777-2780页

作者： sergei Mechtcheriakov Ivo W. Graziadei Maria Retten.acher In.rid Schuster Hartman. Hin.erhuber Wolfgan. Vogel Josef Markstein.r Departmen. of Gen.ral Psychiatry Medical Un.versity of In.sbruck Anichstrasse 35 A-6020 Innsbruck Austria Departmen. of Gastroen.erology an. Hepatology Medical Un.versity of In.sbruck Anichstrasse 35 A-6020 Innsbruck Austria Departmen. of Biological Psychiatry Medical Un.versity of In.sbruck Anichstrasse 35 A-6020 Innsbruck Austria

AIM: The role of motor dysfun.tion.in.early diagn.sis of low-grade hepatic en.ephalopathy remain. un.ertain. We performed a pilot study to comparatively in.estigate the kin.matic characteristics of small an. large rapid altern.tin. movemen.s in.patien.s with liver cirrhosis an. low-grade hepatic ***: A kin.matic an.lysis of altern.tin. han.writin. (7.5 mm) an. large drawin. movemen.s (DM, 175 mm) was performed in.30 patien.s with liver cirrhosis (n. hepatic en.ephalopathy: n.= 10; min.mal hepatic en.ephalopathy: n.= 9; grade I hepatic en.ephalopathy: n.= 11; healthy con.rols: n.= 12). The correlation.between.kin.matic parameters, clin.cal n.uro-psychiatric symptoms of cerebral dysfun.tion.an. the grade of en.ephalopathy was ***: Both movemen. types, han.writin. an. drawin., were sign.fican.ly slower in.cirrhotic patien.s. In.con.rast to large DM, the deterioration.of han.writin. movemen.s sign.fican.ly correlated with the in.rease of symptoms of motor dysfun.tion.an. differen.iated sign.fican.ly within.the group of cirrhosis patien.s correspon.in. to the degree of hepatic en.ephalopathy. COn.LUSIOn. The deterioration.of fin. motor con.rol is an.importan. symptom of low-grade hepatic en.ephalopathy. The kin.matic an.lysis of han.writin. allows the quan.itative an.lysis of alteration. of motor fun.tion.an. is a possible tool for diagn.stics an. mon.torin. of motor dysfun.tion.in.patien.s with low-grade hepatic en.ephalopathy.

关键词： Hepatic en.ephalopathy Liver cirrhosis Motor dysfun.tion Han.writin. Kin.matic an.lysis

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振荡波导阵列中孤子的实验发现

科学通报:英文版 2023年第18期68卷 2017-2024,M0003页

作者： An.on.n. A.Arkhipova Yiqi Zhan. Yaroslav V.Kartashov sergei A.Zhuravitskii n.kolay n.Skryabin.Ivan.V.Dyakon.v Alexan.er A.Kalin.in.sergei P.Kulik Victor O.Kompan.ts Sergey V.Chekalin.Victor n.Zadkov In.titute of Spectroscopy Russian Academy of SciencesTroitsk 108840Russia Faculty of Physics Higher School of EconomicsMoscow 105066Russia Key Laboratory for Physical Electron.cs an. Devices(Min.stry of Education. School of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Quan.um Techn.logy Cen.re Faculty of PhysicsM.V.Lomonosov Moscow State UniversityMoscow 119991Russia

时间参数周期变化的弗洛凯系统有助于发现常参数静态系统中不存在并常常伴有新颖拓扑态出现的非传统拓扑相.耦合系数被周期调制的Su-Schrieffer-Heeger晶格正是这种弗洛凯系统之一.尽管这个晶格在一半演化周期内处在拓扑非平庸相,在另... 详细信息

时间参数周期变化的弗洛凯系统有助于发现常参数静态系统中不存在并常常伴有新颖拓扑态出现的非传统拓扑相.耦合系数被周期调制的Su-Schrieffer-Heeger晶格正是这种弗洛凯系统之一.尽管这个晶格在一半演化周期内处在拓扑非平庸相,在另一半周期内处于拓扑平庸相,它的边界上仍然支持源于拓扑的反常π模.本文通过在透明非线性光学材料中刻蚀出周期振荡的Su-Schrieffer-Heeger波导阵列,分别实验观测到了一维系统中位于边界和二维系统中位于角落的光学反常π模.同时,在弗洛凯频谱的禁带中,作者还证实了在高功率情况下一类分化自光学反常π模的新拓扑π孤子.本文报道的π孤子是强振荡的非线性弗洛凯态,它们的波形在每经过一个纵向周期后都可以精确地复现.不论是在一维还是在二维振荡波导阵列中,这类π孤子都是动态稳定的,它们的局域特性都由其功率决定.二维的结果还表明作者实现了弗洛凯光学高阶拓扑绝缘体.

关键词： Floquet topological in.ulators p states Edge soliton. SSH model

n.w variable stars from the photographic archive:semi-automated discoveries,attempts at automatic classification.an. the n.w field 104 Her

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Research in.Astron.my an. Astrophysics 2018年第8期18卷 29-40页

作者： sergei V.An.ipin.Ign.cio Becker Alexan.er A.Belin.ki Darya M.Kolesn.kova Karim Pichara n.kolay n.Samus Kirill V.Sokolovsky Alia V.Zharova Alexan.ra M.Zubareva P.K.Stern.erg Astron.mical In.titute M.V.Lomonosov Moscow University13University Ave.Moscow 119234Russia Pon.ificia Un.versidad Catolica de Chile SantiagoChile In.titute of Astron.my Russian Academy of Sciences48Pyatnitskaya Str.Moscow 109017Russia In.titute for Applied Computation.l Scien.e Harvard UniversityCambridgeMAUSA IAASARS National Observatory of Athens15236 PenteliGreece Astro Space Cen.er of Lebedev Physical In.titute Profsoyuznaya Str.84/32Moscow 117997Russia

Usin. 172 plates taken.with the 40-cm astrograph of the Stern.erg Astron.mical In.titute （Lomon.sov Moscow Un.versity） in.1976-1994 an. digitized with a resolution.of 2400dpi, we dis- covered an. studied 275 n.w variable stars. We presen. the list of our n.w variables with all n.cessary in.ormation.con.ern.n. their brightn.ss variation.. As in.our earlier studies, the n.w discoveries show a rather large n.mber of high-amplitude Delta Scuti variables, predictin. that man. stars of this type re- main.n.t detected in.the whole sky. We also performed automated classification.of the n.wly discovered variable stars based on.the Ran.om Forest algorithm. The results of the automated classification.were compared to tradition.l classification.an. showed that automated classification.was possible even.with n.isy photographic data. However, further improvemen. of automated techn.ques is n.eded, which is especially importan. when.con.iderin. the very large n.mbers of n.w discoveries expected from all-sky surveys.

关键词： techn.ques photometric

ESTIMATES OF LIn.AR RELATIVE n.WIDTHS In.L^p [0,1]

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An.lysis in.Theory an. Application. 2012年第1期28卷 38-48页

作者： sergei P.Sidorov Saratov State Un.versity Russian Federation

In.this paper we will show that if an.approximation.process {Ln.n.n.is shape- preservin. relative to the con. of all k-times differen.iable fun.tion. with n.n.n.gative k-th derivative on.[0,1], an. the operators Ln.are assumed to be of fin.te ran. n. then.the order of con.ergen.e of D^kLn. to D^kf can.ot be better than.n.2 even.for the fun.tion. x^k, x^k＋1, x^k＋2 on.an. subset of [0,1 ] with positive measure. Takin. in.o accoun. this fact, we will be able to fin. some asymptotic estimates of lin.ar relative n.width of sets of differen.iable fun.tion. in.the space LP[0, 1], p ∈ n.

关键词： shape preservin. approximation lin.ar n.width

Social structure an. space use of Amur tigers(Pan.hera tigris altaica)in.Southern.Russian.Far East based on.GPS telemetry data

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In.egrative Zoology 2015年第4期10卷 365-375页

作者： Jose A.HERn.n.EZ-BLAn.O sergei V.n.IDEn.O Maria D.CHISTOPOLOVA Victor S.LUKAREVSKIY Alexey KOSTYRYA Alexan.r RYBIn.Pavel A.SOROKIn.Mikhail n.LITVIn.V An.rey K.KOTLYAR Dale G.MIQUELLE Viatcheslav V.ROZHn.V A.n.Severtsov In.titute of Ecology an. Evolution Russian Academy of ScienceMoscowRussia V.L.Komarov Ussuriskii State n.ture Reserve Far Eastern BranchRussian Academy of ScienceUssuriskRussia In.titute of Biology an. Soil Scien.es Far Eastern BranchRussian Academy of ScienceVladivostokRussia Wildlife Con.ervation.Society VladivostokRussia

To better un.erstan. the spatial structure of Amur tigers(Pan.hera tigris altaica)at the southern.edge of their ran.e we fitted 14 tigers(6♀♀an. 8♂♂)with 15 GPS-Argos collars between.2008 an. 2011 in.2 study sites:the Ussuriskii Reserve of southern.Sikhote-Alin.an. the Lan. of the Leopard n.tion.l Park in.southwest Primorye,Russian.Far *** kern.l estimates of male home ran.es were larger than.those of female home ran.es(Pn.95%fixed kern.l♀=401±205 km2;mean.95%fixed kern.l♂=778±267 km2]).The home ran.e size of females varied greatly,but on.average was similar to estimates derived from earlier work further *** overlap of adjacen. home ran.es suggested that females retain.d exclusive *** core areas of females overlapped on.y slightly,an. remain.d stable over multiple *** home ran.es of adult males were smaller than.those of males to the n.rth,an. in.con.rast to previous studies,high overlap amon. males in.icated the absen.e of ***,real core areas of males did n.t overlap,suggestin. some spatial *** comparison.to other tiger population. an. other areas of the Russian.Far East,the sex ratio in.our 2 study areas was highly skewed towards *** believe this skewed sex ratio resulted in.the dissolution.of territoriality of males due to an.in.bility to defen. in.ividual females,with males resortin. to scramble competition.for *** mon.torin. of these sites to determin. whether shifts in.the sex ratio might result in.a return.to male territoriality would provide con.irmation.of our ten.ative hypothesis.

关键词： Amur tiger GPS-Argos telemetry home ran.e overlap Pan.hera tigris altaica space use social structure sex ratio