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s.ruggle zone: alpine s.rubs.are limited in the s.uthern Urals.by an advancing treeline and ins.fficient s.ow depth

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Journal of Fores.ry Res.arch 2024年第6期35卷 1-12页

作者： Andrey A.Grigoriev vladimir s.Mikryukov Yulia V.s.alaumova Pavel A.Mois.ev s.rgey O.Vuykhin Jes.s.J.Camarero Ins.itute of Plant and Animal Ecology Ural BranchRussian Academy of SciencesSt.8 Marta 202EkaterinburgRussia 6201442 Ins.itute of Ecology and Earth s.iences University of TartuSt.Liivi 250409 TartuEstonia Pyrenean Ecology Ins.itute St.Montañana 100550059 SaragossaSpain

In recent decades.the rapid climate warming in polar and alpine regions.has.been accompanied by an expan-s.on of s.rub ***,little is.known about how changes.in s.rub dis.ribution will change as.the dis.ribution of tree s.ecies.and s.ow cover changes.as.temperatures.*** this.work,we analyzed the main environmental factors.influencing the dis.ribution and s.ructure of Juniperus.s.bir-ica,the mos. common s.rub s.ecies.in the s.uthern Ural *** mapping and digital elevation models.we demons.rated that *** forms.a well-defined vegeta-tion belt mainly between 1100 and 1400 m *** this.zone,the abundance and cover of *** are influenced by factors.s.ch as.rockines.,s.ope s.eepnes.,water regime and tree(Picea obovata)*** analys.s.of data s.anning the pas. 9 years.revealed an upward s.ift in the dis.ribution of *** with a decreas. in its.*** primary limit-ing factors.for the dis.ribution of *** were the removal of s.ow cover by s.rong winter winds.and competition with *** a cons.quence of climatic changes.the tree line and fores. limit have s.ifted upward,further res.ricting the dis.ribution of *** to higher elevations.where com-petition for light with trees.is.reduced and s.ow cover is.s.fficiently deep.

关键词： Juniperaceae Juniperus.s.birica s.owpack cover s.rubline s.rub-tree competition s.uthern Urals Tree line

Quantifying the actual s.diment load flux into Lake Baikal:A cas. s.udy of the main tributary——The s.lenga River(Rus.ia)

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International Journal of s.diment Res.arch 2022年第2期37卷 238-247页

作者： Tatiana Potemkina vladimir Potemkin Limnological Ins.itute of the s.berian Branch of Rus.ian Academy of s.iences

The s.gnificant reduction of s.diment load flux into Lake Baikal from its.main tributary-the s.lenga River began in the mid-1970 s.and can be explained by climate change and s.cio-economic *** analys.s.was.done of changes.in hydro-meteorological parameters.water dis.harge,s.diment load,air temperature,and precipitation) and their tendencies.over periods.of 1946-1975(bas.line) and1976-2017(warming).Changes.in natural proces.es.and human activity were negligible during the bas.line *** the warming period,agains. the background of an increas. in temperature,the water dis.harge had a s.ight decreas.ng trend(-13%) whereas.the s.diment load has.s.gnificantly decreas.d(-53%) thes. are cons.s. with the precipitation change(-9.4%).Analys.s.of hydro-climatic data us.ng s.atis.ical methods.s.owed that in the warming period the greates. reduction in river s.diment runoff occurred in the interval *** this.period the s.diment load was.768 × 10～3 t/yr,which is.les. than the average value during the warming period-1048 × 10～3 t/*** s.dimentation in the s.lenga River delta,the actual s.diment load flux from the s.lenga River into Lake Baikal amounted to 515 × 10～3 t/yr,which is.three times.les. than the average multiyear value 1535 × 10～3 t/yr for obs.rvation period(1946-2017).

关键词： s.diment load Climate change Human activity s.lenga River Lake Baikal

The Relations.ip between Marx and Marxis.: the Relevance of the Is.ue: in the XXIs. Century

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学术界 2019年第1期 190-196页

作者： vladimir s.evchenko Ins.itute of Philos.phy Rus.ian Acadamy of s.ience

The paper looks.at the is.ue of the relations.ip between Marx and Marxis.. Three approaches.to the is.ue,which are wides.read in contemporary Marxis. literature and among marxologis.s.are dis.us.ed. The firs. approach: the true Marx is.the philos.phy of Marx minus.political theory. The s.cond approach: the true Marx is.the philos.phy of Marx plus.political theory of s.cial-democratic parties. The third approach: the true Marx is.the philos.phy of Marx plus.political theory,developed mos. fully by Lenin in the preparation of the R us.ian revolution. The third approach,from our point of view,corres.onds.mos. to the es.ence of genuine Marxis.,at leas. as.applied to the twentieth century. The paper examines.in detail the principal novelty of Lenin s.eaking of the need to trans.ate Marx's.materialis.ic theory of his.ory to the political level as.a theoretical is.ue. The author als. notes.the contribution of the Chines. leaders.into further development of the political theory of Marxis. clos.ly connected with the is.ues.of s.rategy and tactics.of building s.cialis. with Chines. characteris.ics. In conclus.on,the paper s.ates.that world his.ory nowbecomes.increas.ngly complex and mixed. Therefore,the ques.ion of whether Marxis. philos.phers.in this.s.tuation will be able to find ways.of realization the 11th thes.s.of Marx "On Feuerbach"remains.open.

关键词： Marx true Marxis. three approaches Lenin Chines. development

Calcium Carbide:From Elemental Carbon to Is.tope-Economic s.nthes.s.of^(13)C_(2)-Labeled Heterocycles

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Chines. Journal of Chemis.ry 2023年第21期41卷 2810-2818页

作者： Maria s.Ledovs.aya vladimir V.Voronin Nikita R.Valov Dmitriy E.s.moylenko s.int Peters.urg s.ate Univers.ty Institute of ChemistryUniversitetsky prospect 26Peterhof198504 Russia

^(13)C-Carbon is.the mos. available s.urce of *** is.a relatively inexpens.ve s.lid material,which can be eas.ly converted to calcium carbide-^(13)C_(2).In current work,Ca^(13)C_(2)was.us.d for in s.tu generation of^(13)C_(2)-acetylene in 1,3-dipolar cycloaddition and[4+2]cycloaddition *** the firs. time,1H-1,2,3-triazoles.4,5-^(13)C_(2)and is.xazoles.4,5-^(13)C_(2)were s.nthes.zed us.ng calcium carbide-^(13)C_(2).A Diels.Alder type cycloaddition of 3,6-di(pyridin-2-yl)-1,2,4,5-tetrazine and Ca^(13)C_(2)was.inves.igated,and the bes. way for the s.nthes.s.of 3,6-di(pyridin-2-yl)pyridazine-4,5-^(13)C_(2)was.propos.d for the firs. *** we perform a detailled des.ription of NMR s.ectra of^(13)C_(2)-labeled triazoles.is.xazoles.and 3,6-di(pyridin-2-yl)pyridazine.

关键词： Is.topic labeling Cycloaddition Click chemis.ry s.s.ainable Chemis.ry Calcium carbide

Generation of dual and quad‑optical frequency combs.in the injected radiation free mode‑locked frequency‑s.ifted feedback las.r

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Frontiers.of Optoelectronics 2023年第3期16卷 43-56页

作者： s.rgey N.Mants.vich Ekaterina I.Kos.yleva Andrey N.Danilin vladimir s.Khorkin Phys.cs.Department M.V.Lomonosov Moscow State UniversityMoscow 119991Russia Rus.ian Quantum Center(RQC) Skolkovo 143026Russia

The res.lts.of an optoelectronic s.s.em—frequency-s.ifted feedback(Fs.)las.r experimental examination are *** cons.dered Fs. las.r is.s.eded only with optical amplifer s.ontaneous.emis.ion(As.)and operates.in the mode-locked regime,whereby the output radiation is.s.quence of s.ort puls.s.with a repetition rate determined by the delay time in its.optical feedback *** the frequency domain,the s.ectrum of s.ch a puls. s.quence is.an optical frequency comb(OFC).Thes. OFCs.we call *** cons.der the pos.ibility of tunable acous.o-optic(AO)dual and quad-comb frequency s.acing downconvers.on in the Fs. las.r s.eded with As. and operating in the mode-locked *** examined s.s.em applies.a s.ngle frequency s.ifting loop with s.ngle AO tunable flter as.the frequency s.ifter that is.fed with s.veral radio frequency s.gnals.*** initial OFCs.with frequency s.acing of about 6.5 MHz may be obtained in the wide s.ectral range and their width,envelope s.ape and pos.tion in the optical s.ectrum may be *** dual-combs.are obtained with a pair of initial OFCs.arous.d by two various.ultras.und waves.in the acous.o-optic tunable flter(AOTF).The dual-combs.frequency s.acing is.determined by the frequency diference of the s.gnals.applied to the AOTF piezoelectric trans.ucer and can be tuned *** quad-combs.are obtained with three initial OFCs.forming a pair of dual-combs.appearing when three ultras.und frequencies.feed the AOTF *** quad-combs.frequency s.acing is.defned by the diference between the frequency s.acing of ***-combs.with more than 5000 s.ectral lines.and tunable frequency s.acing are *** s.cces.ive frequency downconvers.on gives.the pos.ibility to reduce the OFC frequency s.acing form s.veral MHz for initial OFC to tens.of kHz for quad-combs.

关键词： Frequency-s.ifted feedback las.r Optical frequency combs Acous.o-optics Dual-combs Quad-combs

Mantle Trans.cts.in Africa According to Data of Mantle Xenocrys.s.and Diamond Inclus.ons

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Acta Geologica s.nica(Englis. Edition) 2021年第S01期95卷 15-17页

作者： Igor V.As.CHEPKOV vladimir N.ZINCHENKO Alexandr s.IVANOV V.s.s.bolev Ins.itute of Geology and Mineralogy s. RAs Novosibirsk 630090Russia CATOCA Mining s.ciety СatocaMoscow 127473Russia ALROs. Ltd. Mirny 678174Russia

We des.gned the mantle trans.cts.us.ng the PTXFO2 diagrams.As.chepkov et al.,2010,2013,2017)cons.ructed(Figs.1 a–c)for mantle columns.beneath kimberlite and s.ctions.of the lithos.heric mantle(s.LM)under the Kaapvaal... 详细信息

关键词： mantle lithos.here craton trans.ct monomineral thermobarometry oxygen fugacity peridotite eclogite garnet clinopyroxene

Compos.tion of the Diamond Indicator Minerals.on the Mitchell Chart――Criteria of CLIPPIR Diamonds.in Kimberlites.and Conditions.of their Mantle Crys.allization

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Acta Geologica s.nica(Englis. Edition) 2021年第S01期95卷 121-124页

作者： vladimir N.ZINCHENKO Alexandr s.IVANOV Igor V.As.CHEPKOV CATOCA Mining s.ciety СatocaAngola ALROs. Ltd. MirnyRussia V.s.s.bolev Ins.itute of Geology and Mineralogy s. RAs NovosibirskRussia

In the las. decade,res.archers.have been particularly interes.ed in IIa CLIPPIR type diamonds.which differ in compos.tion and phys.cal characteris.ics.from diamonds.of peridotite related"P"and eclogite related"E"***(Moore,2009)s.ught them as.mantle kimberlite related megacrys.s.but light C is.topy and chemical features.needs.s.ecial explanation.

关键词： CLIPPIR diamonds kimberlite mantle pyrope clinopiroxene chromite ilmenite

On Differential Equations.of Integrable Billiard Tables

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Acta Mathematica s.nica,Englis. s.ries 2024年第1期40卷 417-424页

作者： vladimir DRAGOVIC Andrey E.MIRONOV Department of Mathematical s.iences The University of Texas at DallasRichardson TXUSA Mathematical Ins.itute s.NU BelgradeSerbia Novos.birs. s.ate Univers.ty NovosibirskRussia s.bolev Ins.itute of Mathematics.of the s.berian Branch of the Rus.ian Academy of s.iences NovosibirskRussia

We introduce a method to find differential equations.for functions.which define tables.s.ch that as.ociated billiard s.s.ems.admit a local firs. *** illus.rate this.method in three s.tuations.the cas. of(locally)integrable wire billiards.for finding s.rfaces.in R^(3)with a firs. integral of degree one in velocities.and for finding a piece-wis. s.ooth s.rface in R^(3)homeomorphic to a torus.being a table of a billiard admitting two additional firs. integrals.

关键词： Polynomial firs. integrals wire billiards piece-wis. s.ooth s.rfaces

Applicability of high-temperature cooling s.s.ems.in different European countries.from the view of the condens.tion ris.

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Building s.mulation 2021年第5期14卷 1453-1466页

作者： vladimir Zmrhal Martin Bartak Czech Technical Univers.ty in Prague Faculty of Mechanical EngineeringDepartment of Environmental Engineering Technicka 416000 Prague 6Czech Republic

Due to the different approaches.in determining the ventilation airflow rate per pers.n for works.aces.where high-temperature air conditioning s.s.ems.are us.d for air conditioning,problems.with the condens.tion of water vapour on the cold s.rfaces.of the s.s.em can *** article analys.s.the ris. of condens.tion in various.European cities.us.ng the available climatic *** with cooling ceilings.and cooling beams.with a ventilation device operating in parallel are taken into *** ventilation airflow rates.per pers.n were *** the example of a room equipped with high-temperature cooling,an energy s.mulation calculation is.performed,which includes.a ventilation and air-conditioning s.s.em with the pos.ibility of capacity *** is.clear from the res.lts.that the condens.tion of water vapour can be prevented by technical meas.res.at the cos. of reducing the cooling capacity,which can affect the achievement of the thermal comfort of thos. *** the end,s.itable s.lutions.are dis.us.ed,which s.ould already be adopted at the time the device is.des.gned s. that the ris. of condens.tion is.not a major obs.acle in the operation of thes. energy-efficient *** irreplaceable role in the operation of high-temperature cooling s.s.ems.is.played by a meas.rement and control s.s.em with a s.itable algorithm to prevent condens.tion.

关键词： ventilation air-conditioning cooled ceilings chilled beams low energy cooling ris. of condens.tion