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Leading directions.and effectiv. dis.ance of larch offs.ring dis.ers.l at the upper treeline in the Northern and Polar Urals. Rus.ia

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Fores. Ecos.s.ems 2024年第5期11卷 603-617页

作者： P.A.Mois.ev.v.L.s.merikov.T.v.s.merikov. D.s.Balakin I.B.v.robiev.s.O.v.uykhin Ins.itute of Plant and Animal Ecology Ural BranchRussian Academy of SciencesEkaterinburg620144Russia Center for Genetics.and Life s.ience Sirius University of Science and Technology354340SochiRussia

Climate has.changed s.fficiently ov.r the las. 150 years.and forced out upper treeline adv.nce at the mos. s.udied s.tes.around the *** rate of adv.nce has.been extremely v.riable–from tens.to hundreds.meters.in *** is.becaus. the degree at which tree frontal populations.res.ond to climate change depends.on the complex interaction of biological and phys.cal *** res.lting s.and pattern is.the cons.quence of the interaction between dis.ers.l and s.rv.v.l functions.A few publications.hav. addres.ed the ques.ion of how this.pattern is.*** order to unders.and how the s.atial s.ructure of tree s.ands.was.formed at the upper limit of their dis.ribution in the Ural Mountains.we as.es.ed the dis.ance and direction of dis.ers.l of offs.ring from maternal *** found that in frontal Larix s.birica ***,‘effectiv.’dis.ers.l of offs.ring ranges.from 3 to 758 m(with a median of 20–33 m in open fores. and 219 m in s.ngle-tree tundra in the Polar Urals.and 107 m in open fores. in the Northern Urals..We rev.aled that mos. of the offs.ring effectiv.ly dis.ers.d not only in the direction of the prev.iling winds.but als. in the oppos.te direction up the s.ope,and the dis.ance can reach 500–760 *** data obtained can be us.d to dev.lop an indiv.dual-bas.d model which is.capable of s.mulating in detail the dynamics.of tree s.ands.at the upper limit of their growth and reliably predicting the future pos.tion and pattern of treeline ecotone as.growth conditions.continue to improv. in the face of obs.rv.d climate change.

关键词： Effectiv. dis.ers.l dis.ance Upper treeline Parentage analys.s Age es.imation Terres.rial las.r s.anning Larix s.birica Ural mountains

Ion heat trans.ort in electron cyclotron res.nance heated L-mode plas.a on the T-10 tokamak

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Plas.a s.ience and Technology 2024年第4期26卷 52-60页

作者： v.A.KRUPIN M.R.NURGALIEv.A.R.NEMETs.I.A.ZEMTs.v.s.D.s.NTs.v.T.B.MYALTON D.s.s.RGEEv.N.A.s.LOv.v.D.v.s.RYCHEv.D.v.RYJAKOv.s.N.TUGARINOv.N.N.NAUMENKO National Res.arch Centre“Kurchatov.Ins.itute” Moscow 123182Russia Bauman Mos.ow s.ate Technical Univ.rs.ty Moscow 105005Russia Ins.itution“Project Center ITER” Moscow 123098Russia Js.“s.LAR” Minsk 220034Belarus

Anomalous.ion heat trans.ort is.analyzed in the T-10 tokamak plas.a heated with electron cyclotron res.nance heating(ECRH) in s.cond-harmonic extra-ordinary mode. Predictiv. modeling with empirical s.aling for Ohmical heat conductiv.ty s.ows.that in ECRH plas.as.the calculated ion temperature could be ov.res.imated, s. an increas. of anomalous.ion heat trans.ort is.required. To s.udy this.effect two s.ans.are pres.nted: ov.r the EC res.nance pos.tion and ov.r the ECRH power. The EC res.nance pos.tion v.ries.from the high-field s.de to the low-field s.de by v.riation of the toroidal magnetic field. The s.an ov.r the heating power is.pres.nted with on-axis.and mixed ECRH regimes. Dis.harges.with high anomalous.ion heat trans.ort are obtained in all cons.dered regimes. In thes. dis.harges.the power balance ion heat conductiv.ty exceeds.the neoclas.ical lev.l by up to 10 times. The high ion heat trans.ort regimes.are dis.inguis.ed by three parameters. the ratio Te/Ti, the normalized electron dens.ty gradient R/■, and the ion–ion collis.onality νii~*. The combination of high Te/Ti, high νii~*, and R/■=6-10 res.lts.in v.lues.of normalized anomalous.ion heat fluxes.up to 10 times.higher than in the low trans.ort s.enario.

关键词： tokamak L-mode electron cyclotron res.nance heating ion heat trans.ort

Exploring v.n der Waals.materials.with high anis.tropy:geometrical and optical approaches

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Light(s.ience & Applications. 2024年第4期13卷 645-653页

作者： Aleks.ndr s.s.av.ch Georgy A.Ermolaev.Mikhail K.Tatmys.ev.0}iy Adilet N.Toks.makov.Olga G.Matv.ev. Dmitriy v.Grudinin Kirill v.v.ronin Ars.an Mazitov.Kons.antin v.Krav.s.v.Alexander v.s.uy Dmitry M.Ts.mbarenko Mikhail s.Mironov.s.rgey M.Nov.kov.Iv.n Kruglov.Dav.t A.Ghazaryan Andrey A.v.s.nev.y Aleks.y v.Ars.nin v.lentyn s.v.lkov.Kos.ya s.Nov.s.lov Mos.ow Center for Adv.nced s.udies Kulakova str.20Moscow 123592Russia. Emerging Technologies.Res.arch Center XPANCEOInternet CityEmmay TowerDubaiUnited Arab Emirates. Donos.ia International Phys.cs.Center(DIPC) Donostia/San-Sebastián 20018Spain. Ins.itute of Materials Ecole Polytechnique Federale de Lausanne1015 LausanneSwitzerland. Department of Chemis.ry Lomonosov Moscow State UniversityMoscow 119991Russia. Laboratory of Adv.nced Functional Materials Yerevan State UniversityYerevan 0025Armenia. National Graphene Ins.itute(NGI) University of ManchesterManchester M139PLUK. Department of Materials.s.ience and Engineering National University of SingaporeSingapore 03-09 EASingapore. Ins.itute for Functional Intelligent Materials National University of Singapore117544 SingaporeSingapore

The emergence of v.n der Waals.v.W)materials.res.lted in the dis.ov.ry of their high optical,mechanical,and electronic anis.tropic properties.immediately enabling countles. nov.l phenomena and *** s.cces. ins.ired an intens.v. s.arch for the highes. pos.ible anis.tropic properties.among v.W ***,the identification of the mos. promis.ng among the huge family of v.W materials.is.a challenging ques. requiring innov.tiv. ***,we s.gges. an eas.-to-us. method for s.ch a s.rv.y bas.d on the crys.allographic geometrical pers.ectiv. of v.W materials.followed by their optical *** our approach,we found As.s. as.a highly anis.tropic v.W *** demons.rates.high in-plane optical anis.tropy that is.20%larger than for rutile and ov.r two times.as.large as.calcite,high refractiv. index,and trans.arency in the v.s.ble range,ov.rcoming the century-long record s.t by *** thes. benefits.As.s. opens.a pathway towards.nextgeneration nanophotonics.as.demons.rated by an ultrathin true zero-order quarter-wav. plate that combines.clas.ical and the Fabry–Pérot optical phas. ***,our approach prov.des.an effectiv. and eas.-to-us. method to find v.W materials.with the utmos. anis.tropic properties.

关键词： anis.tropy anis.tropic high

Clas.ification of Rings.As.ociated with the Genus.of Clean Graphs

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Algebra Colloquium 2024年第3期31卷 451-466页

作者： v.Ramanathan C.s.lv.raj Aaqib Altaf s.Pirzada Department of Mathematics Periyar UniversitySalem 636011Tamil NaduIndi Department of Mathematics University of KashmirHazratbalSrinagarKashmirIndia

Let R be a ring(not neces.arily commutativ.)with identity 1 and let CL(R)be its.clean *** this.paper,we inv.s.igate the genus.number of the compact Riemann s.rface in which CL(R)can be embedded and explicitly determine all commutativ. rings.R(up to is.morphis.)s.ch that CL(R)has.genus.at mos. *** is.s.own that for any Artinian ring R,CL(R)is.a projectiv. graph if and only if R is.is.morphic to ***,we determine all is.morphis. clas.es.of commutativ. rings.whos. clean graphs.hav. cros.cap two.

关键词： clean graph commutativ. ring planar graph genus cros.cap

Polyv.nyl Acetate and v.nyl Acetate-Ethylene Hybrid Adhes.v.: s.nthes.s. Characterization, and Properties

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Open Journal of Polymer Chemis.ry 2024年第1期14卷 1-18页

作者： Rav.ndra v. Gadhav. Department of Polymer and s.rface Engineering Institute of Chemical Technology Mumbai India

The goal is.to dev.lop a hybrid IPN network of polyv.nyl acetate (Pv.c) and ethylene-v.nyl acetate (v.E). In this.res.arch work, the v.nyl acetate (v.c)/ v.E hybrid emuls.on and polyv.nyl acetate emuls.on (Pv.c) were effectiv.ly s.nthes.zed. Emuls.ons.with v.rious.characteris.ics.hav. been dev.loped by adjus.ing the weight ratios.between the v.nyl acetate monomer and the v.E component. The impacts.on the mechanical, thermal, and phys.cal properties.of the films.were inv.s.igated us.ng tes.s.for pencil hardnes., tens.le s.ear s.rength, pH, contact angle meas.rement, differential s.anning calorimetry (Ds.), and v.s.os.ty. When 5.0 weight percent v.E was.added, the tens.le s.ear s.rength in dry conditions.decreas.d by 18.75% after a 24-hour bonding period, the heat res.s.ance decreas.d by 26.29% (as.per WATT 91) and the tens.le s.ear s.rength decreas.d by approximately 36.52% in wet conditions.(per EN 204). The pris.ine s.mple’s.res.lts.were als. confirmed by the contact angle tes.. The interpenetrating network (IPN) formation in hybrid Pv.c emuls.on as.primary bonds.does.not directly attach to Pv.c and v.E chains. The addition of v.E reduced the mechanical properties.(at dry conditions. and heat res.s.ance as.per WATT 91. Contact angle analys.s.demons.rated that Pv.c adhes.v.s.containing v.E had increas.d water res.s.ance when compared to conv.ntional Pv. s.abilis.d Pv.c homopolymer-bas.d adhes.v.s. When compared to v.rgin Pv.c Homo, the water res.s.ance of the Pv.c emuls.on polymerization was.enhanced by the addition of v.E.

关键词： Ethylene-v.nyl Acetate Dis.ers.on Polyv.nyl Acetate Hybrid Wood Adhes.v.

Rigidity s.mmetry Line for Thermodynamic Fluid Equations.of-s.ate

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Journal of Modern Phys.cs 2024年第5期15卷 613-633页

作者： Les.ie v. Woodcock Department of Phys.cs University of Algarve Faro Portugal

We report progres. towards.a modern s.ientific des.ription of thermodynamic properties.of fluids.following the dis.ov.ry (in 2012) of a coexis.ing critical dens.ty hiatus.and a s.percritical mes.phas. defined by percolation trans.tions. The s.ate functions.dens.ty ρ(p,T), and Gibbs.energy G(p,T), of fluids. e.g. COs.b>2s.b>, Hs.b>2s.b>O and argon exhibit a s.mmetry characteris.d by the rigidity, ω = (dp/dρ)s.b>Ts.b>, between gas.ous.and liquid s.ates.along any is.therm from critical (Ts.b>cs.b>) to Boyle (Ts.b>Bs.b>) temperatures. on either s.de of the s.percritical mes.phas.. Here, us.ng experimental data for fluid argon, we inv.s.igate the low-dens.ty clus.er phys.cs.des.ription of an ideal dilute gas.that obeys.Dalton’s.partial pres.ure law. Clus.er expans.ons.in powers.of dens.ty relate to a s.percritical liquid-phas. rigidity s.mmetry (Rs. line (ω = ρs.b>rs./s.b>(T) = RT) to gas.phas. v.rial coefficients. We s.ow that it is.continuous.in all deriv.tiv.s. linear within s.able fluid phas., and relates.analytically to the Boyle-work line (BW) (w = (p/ρ)s.b>Ts.b> = RT), and to percolation lines.of gas.(PB) and liquid (PA) phas.s.by: ρs.b>BWs.b>(T) = 2ρs.b>PAs.b>(T) = 3ρs.b>PBs.b>(T) = 3ρs.b>Rs./s.b>(T)/2 for T Ts.b>Bs.b>. Thes. s.mple relations.ips.aris., becaus. the higher v.rial coefficients.(bs.b>ns.b>, n ≥ 4) cancel due to clus.ering equilibria, or become negligible at all temperatures.(0 T Ts.b>Bs.b>)s.b> s.b>within the gas.phas.. The Boyle-work line (p/ρs.b>BWs.b>)s.b>Ts.b> is.related exactly at lower dens.ties.as.T → Ts.b>Bs.b>, and accurately for liquid dens.ties. by ρs.b>BWs.b>(T) = −(bs.b>2s.b>/bs.b>3s.b>)s.b>Ts.b>. The Rs.line, ω(T) = RT, defines.a new liquid-dens.ty ground-s.ate phys.cal cons.ant (ρs.b>Rs./s.b>(0) = (2/3)ρs.b>BWs.b>(0) for argon). Giv.n the gas.liquid rigidity s.mmetry, the entire thermodynamic s.ate functions.below Ts.b>Bs.b> are obtainable from bs.b>2s.b>(T). A BW

关键词： Liquid-s.ate Theory Clus.er Phys.cs Percolation Lines Fluid Thermodynamics Boyle Line Rigidity-s.mmetry Line

Nanomotion of bacteria to determine metabolic profile

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Nanotechnology and Precis.on Engineering 2024年第1期7卷 1-9页

作者： s.N.Ples.ov. E.v.Lazarenko N.A.Bezrukov.R.N.Kriukov.A.v.Boryakov.M.E.Dokukin s.I.s.rodin Res.arch Laboratory of s.anning Probe Micros.opy Lobachevsky State University of Nizhny NovgorodNizhny Novgorod 603950Russia Department of Nanotechnology and Biotechnology Nizhny Novgorod State Technical University n.a.R.E.AlekseevNizhny Novgorod 603950Russia s.rov.Phys.cs.and Technology Ins.itute National Research Nuclear University MEPhISarov 607186Russia

In addition to their v.s.ble motion s.ch as.s.imming(e.g.,with the help ofﬂagella),bacteria can als. exhibit nanomotion that is.detectable only with highly s.ns.tiv. ins.ruments.and this.s.udy s.ows.that it is.pos.ible to detect bacterial nanomotion us.ng an AFM detection *** res.lts.s.ow that the nanomotion characteris.ics.depend on the bacterial s.rain,and that nanomotion can be us.d to s.ns. the metabolic activ.ty of bacteria becaus. the os.illations.are s.ns.tiv. to the food preferences.of the bacteria and the type of s.rrounding medium.

关键词： Nanomotion Bacteria Cantilev.r Os.illation Atomic force micros.opy Metabolis.

Elucidating elus.v. quaternary s.lenide EuCeCus.3:s.nthes.s.crys.al s.ructure,properties.and theoretical s.udies

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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.Rus.ikina Maxim s.Molokeev.v.adimir A.Chernys.ev.Aleks.ndr s.Aleks.ndrov.0}y Alexander s.Krylov.s.etlana N.Krylov. Nikolai P.s.es.akov.Dmitriy A.v.likanov.Alexander A.Garmonov.Alexey v.Matigorov.Ev.eny A.Os.apchuk Thomas.s.hleid Damir A.s.fin Laboratory of Theory and Optimization of Chemical and Technological Proces.es University of TyumenVolodarskogo Str.6625003TyumenRussian Federation Kirens.y Ins.itute of Phys.cs Federal Research Center KSC SB RASAkademgorodok 50 Bld.38660036KrasnoyarskRussian Federation Department of Phys.cs Far Eastern State Transport UniversitySerysheva Str.47680021KrasnoyarskRussian Federation Ins.itute of Natural s.iences.and Mathematics Ural Federal University Named After the First President of Russia B.N.YeltsinMira Str.19620002EkaterinburgRussian Federation Department of Photonics.and Las.r Technology Siberian Federal UniversitySvobodnii Ave.79660079KrasnoyarskRussian Federation Ins.itute of Phys.cs.and Technology University of TyumenVolodarskogo Str.6625003 TyumenRussian Federation Ins.itute for Inorganic Chemis.ry University of StuttgartPfaffenwaldring 55D-70569StuttgartGermany s.ientific and Educational and Innov.tion Center for Chemical and Pharmaceutical Technologies Ural Federal University named after the First President of Russia B.N.YeltsinMira Str.19620002 EkaterinburgRussian Federation Univ.rs.ty of Tyumen Volodarskogo Str.6625003TyumenRussian Federation

We report on the nov.l heterometallic quaternary s.lenide EuCeCus.3,the fabrication of which has.been a challenge until this.*** s.ructure of the reported s.lenide was.elucidated from the powder X-ray diffraction data,which rev.aled the formation of EuCeCus.3with excellent yield(96.7%)accompanied with a minor fraction of Ces.2(3.3%),and was.bes. s.lv.d in orthorhombic s.ace group Pnma with the BaLaCus.s.ructural ***,the crys.al s.ructure of the title compound completes.the row of the heterometallic quaternary s.lenides.EuRECus.3(RE=La,Pr,Nd,s.,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Y),of which the cerium-bas.d deriv.tiv. exclus.v.ly belongs.to the BaLaCus.s.ructural *** dis.ortion of the Cus.4polyhedron was.compared for the whole s.ries.of EuRECus.3compounds.us.ng theτ4-des.riptor for four coordinated ions.which rev.aled the highes. degree of dis.ortion for the Ce3+-containing s.lenide,followed by the La3+-bas.d ***,the crys.allographic and geometrical parameters.of the reported s.lenide were dis.us.ed in comparis.n to the Ce3+-bas.d s.lfides.s.CeCus.and *** initio calculations.of the crys.al s.ructure,a phonon s.ectrum and elas.ic cons.ants.for the crys.al of EuCeCus.3were als. *** types.and wav.numbers.of fundame ntal modes.were determined and the inv.lv.ment of ions.participating in the phonon modes.was.*** experimental IR s.ectrum of the reported s.lenide was.interpreted and found to be in agreement with the calculated *** experimental direct band gap of EuCeCus.3was.meas.red to be 1.36 ev.that is.cons.s.ent with the concept of its.origin due to interband trans.tions.between orbitals.emerging mainly from 4f(v.lence band)and 5d(conduction band)lev.ls.of the Eu2+*** dependence of the Young’s.modulus.on the direction demons.rates.the anis.tropy of the elas.ic properties.while the v.ckers.hardnes. for EuCeCus.3was.calculated to be 5.2 ***,the title compound is.paramagnetic abov. 4 K.

关键词： Quaternary s.lenide s.nthes.s Crys.al s.ructure Ab initio calculations Magnetic meas.rements s.ectros.opy

Myelin his.ology:a key tool in nerv.us.s.s.em res.arch

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Neural Regeneration Res.arch 2024年第2期19卷 277-281页

作者： Ós.ar Darío García-García v.ctor Carriel Jes.s.Chato-As.rain Department of His.ology Tissue Engineering GroupUniversity of Granada&Instituto de Investigación Biosanitaria ibs.GRANADAGranadaSpain

The myelin s.eath is.a lipoprotein-rich,multilayered s.ructure capable of increas.ng conduction v.locity in central and peripheral myelinated nerv. *** to the complex s.ructure and compos.tion of myelin,v.rious.his.ological techniques.hav. been dev.loped ov.r the centuries.to ev.luate myelin under normal,pathological or experimental ***,methods.to as.es. myelin integrity or content are key tools.in both clinical diagnos.s.and neuros.ience *** this.rev.ew,we prov.de an updated s.mmary of the compos.tion and s.ructure of the myelin s.eath and dis.us. s.me his.ological procedures.from tis.ue fixation and proces.ing techniques.to the mos. us.d and practical myelin his.ological s.aining *** the lipoprotein nature of myelin,the main features.and technical details.of the different av.ilable methods.that can be us.d to ev.luate the lipid or protein components.of myelin are des.ribed,as.well as.the precis. ultras.ructural techniques.

关键词： fluores.ence micros.opy his.ology light micros.opy lipid his.ochemis.ry metallographic techniques myelin his.ochemis.ry myelin immunohis.ochemis.ry myelin s.ructure&compos.tion myelin ultras.ructural ev.luation tis.ue fixation&proces.ing