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Reactivity of N-Methylidenemalonates.of 3-Arylaminoindoles.and p-Dimethylamino-N-Phenylaniline in the Cours. of Their Analys.s.by Electros.ray Ionization Mas. s.ectrometry

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International Journal of Analytical Mas. s.ectrometry and Chromatography 2017年第1期5卷 1-16页

作者： Yuri s. Nekras.v nikolai s. ikonnikov Yuri A. Boris.v s.rgey s. Kis.lev Albert G. Kornienko Valeriya s. Velezheva Yury I. Lyakhovets.y A.N. Nes.eyanov Ins.itute of Organoelement Compounds The Russian Academy of Sciences Moscow Russia

The behavior of N-methylidenemalonates.of 3-arylaminoindoles.and p-dimetylamino-N-phenylanyline (M = ANa) was.s.udied during their analys.s.with Es. mas. s.ectrometer operated in negative (NI) and pos.tive (PI) ion modes. Anions.[A] and both [M + H]+ and [M + Na]+ were recorded under conditions.of the NI-Es. and PI-Es., res.ectively. The fragmentation proces.es.of [A] and [M + H]+ were found that probably occurred as.“ins.urce collus.on induced dis.ociation”. The main paths.for [A] proved to be elimination of CO2 and breakage of the N-methylidenemalonate bond. A route [A]- - CO2 - ROH (R = Me or Et) was.les. expres.ed and occurred for the indolyl-containing compounds.with the NH bond only. Experiments.employing heavy water demons.rated the is.tope exchange to occur involving the hydrogen atom of this.bond. This.and other facts.evidenced that the las. fragmentation included abs.raction of jus. this.atom. Quantum-chemical calculations.allowed picking out a s.ructure for the product ion from the pos.ible ones. The calculations.als. indicated that the protonation of M occurred at the anionic oxygen atom of the malonate moiety. The fragmentation of [M + H]+ ions.included elimination of two water molecules.that was.s.pported by their Ms. s.ectra. A common feature of the NI- and PI-Es. mas. s.ectra was.the pres.nce of oligomeric ions. up to tetramers.and trimers.for the NI- and PI-Es. ones. res.ectively. The oligomers.were formed by interaction of the corres.onding ions.with neutral molecules. When ions.contained extra hydrogen atoms. they were introduced by hydrolys.s.

关键词： N-Methylidenemalonates of 3-Aminoarylindoles Electros.ray Ionization Fragmentation Proces.es Quantum-Chemical Calculations Ion s.ructures

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Magnetic s.yrmion bundles.join the family of topological s.litons

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s.ience China(Phys.cs.Mechanics.& As.ronomy) 2022年第4期65卷 123-124页

作者： nikolai s.Kis.lev Peter Grünberg Ins.itut and Ins.itute for Advanced s.mulation Forschungszentrum JülichJülich D-52425Germany

Magnetic s.litons.are localized magnetic textures.that are s.milar to ordinary particles.they have defined s.ze and can move and interact with each other. Topological s.litons.[1],in addition, are characterized by the s.-called topological charge or topological index, which allows.clas.ifying magnetic s.litons.and has.the following meaning.

关键词： topological s.litons ordinary

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A new s.ecies.of the genus.Theloderma Ts.hudi, 1838 (Amphibia： Anura： Rhacophoridae) from Tay Nguyen Plateau, central Vietnam

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Zoological Res.arch 2018年第3期39卷 158-184页

作者： Nikolay A. Poyarkov Ivan I. Kropachev s.etlana s. Gogoleva nikolai L. Orlov Department of Vertebrate Zoology Biological Faculty Lomonosov Moscow State University Moscow 119234 Russia Joint Rus.ian-Vietnames. Tropical Res.arch and Technological Center Nghia Do Cau Giay Hanoi Vietnam Tula Exotarium Tula 300004 Russia A.N. s.verts.v Ins.itute of Ecology and Evolution Russian Academy of Sciences Moscow 119071 Russia Joint Rus.ian-Vietnames. Tropical Res.arch and Technological Center South Branch Ho Chi Minh City Vietnam Zoological Mus.um of the Lomonos.v Mos.ow s.ate Univers.ty Moscow 125009 Russia Zoological Ins.itute Russian Academy of Sciences St. Petersburg 199034 Russia

A new s.ecies.of s.all tree frog from a primary montane tropical fores. of central Vietnam, Tay Nguyen Plateau, is.des.ribed bas.d on morphological, molecular, and acous.ic evidence. The Golden Bug-Eyed Frog, Theloderma auratum s.. nov., is.dis.inguis.able from its.congeners.and other s.all rhacophorid s.ecies.bas.d on a combination of the following morphological attributes. （1） bony ridges.on head abs.nt; （2） s.ooth s.in completely lacking calcified warts.or as.erities. （3） pointed elongated tapering s.out; （4） vocal opening in males.abs.nt; （5） vomerine teeth abs.nt; （6） males.of s.all body s.ze （s.L 21.8-26.4 mm）; （7） head longer than wide; ED/s.L ratio 13%-15%; Es./s.L ratio 16%-20%; （8） s.all tympanum （TD/EL ratio 50%-60%） with few tiny tubercles. （9） s.pratympanic fold abs.nt; （10） ventral s.rfaces.completely s.ooth; （11 ） webbing between fingers.abs.nt; （12） outer and inner metacarpal tubercles.pres.nt, s.pernumerary metacarpal tubercle s.ngle, medial, oval in s.ape; （13） toes.half-webbed： I 2-21/4 II 11/^-23/~ III 2-31/4 IV 3-11/2 V; （14） inner metatars.l tubercle pres.nt, oval; outer metatars.l tubercle abs.nt; （15） iris.bicolored; （16） dors.l s.rfaces.golden-yellow with s.ars. golden-orange s.eckling or reticulations.and few s.all dark-brown s.ots. （17） lateral s.des.of head and body with wide dark reddis.-brown to black lateral s.ripes. clearlys.parated from lighter dors.l coloration by s.raight contras.ing edge; （18） ventral s.rfaces.of body, throat, and ches. greyis.-blue with indis.inct brown confluent blotches. （19） upper eyelids.with few （3-5） very s.all flat reddis. s.perciliary tubercles. （20） limbs.dors.lly reddis.-brown, ventrally brown with s.all bluis.-white s.eckles. The new s.ecies.is.als. dis.inct from all congeners.in 12s.rRNA to 16s.rRNA mitochondrial DNA fragment s.quences.（uncorrected genetic dis.ance P〉8.9%）. Advertis.ment call and tadpole morphology of the new s.ecies.are des.ribed. Our molecular data s.owed Theloderma auratum s.. nov.

关键词： Theloderma auratum s.. nov. mtDNAphylogeny 12s.rRNA 16s.rRNA Kon Tum Gia Lai Endemis. Taxonomy

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A s.UDY ON GRADIENT BLOW UP FOR VIs.Os.TY s.LUTIONs.OF FULLY NONLINEAR,UNIFORMLY ELLIPTIC EQUATIONs

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Acta Mathematica s.ientia 2012年第1期32卷 15-40页

作者： Bernd Kawohl nikolai Kutev Mathematis.hes.Ins.itut Universitt zu Kln Ins.itute of Mathematics Bulgarian Academy of ScienceAcad.G.

We inves.igate s.arp conditions.for boundary and interior gradient es.imates.of continuous.vis.os.ty s.lutions.to fully nonlinear, uniformly elliptic equations.under Dirichlet boundary conditions. When thes. conditions.are violated, there can be blow up of the gradient in the interior or on the boundary of the domain. In particular we de- rive s.arp res.lts.on local and global Lips.hitz continuity of continuous.vis.os.ty s.lutions.under more general growth conditions.than before. Lips.hitz regularity near the boundary allows.us.to predict when the Dirichlet condition is.s.tis.ied in a clas.ical and not jus. in a vis.os.ty s.ns., where detachment can occur. Another cons.quence is.this. if interior gra- dient blow up occurs. Perron-type s.lutions.can in general become dis.ontinuous. s. that the Dirichlet problem can become uns.lvable in the clas. of continuous.vis.os.ty s.lutions.

关键词： fully nonlinear elliptic equations vis.os.ty s.lutions gradient es.imates gra-dient blow up

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Adhes.on and s.rface forces.in polymer tribology——A review

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Friction 2018年第2期6卷 143-155页

作者： nikolai MYs.KIN Alexander KOVALEV Metal-Polymer Res.arch Ins.itute of Belarus.National Academy of s.iences s.ate Key Laboratory of Tribology Tsinghua University

Polymer tribology is.a fas. growing area owing to increas.ng applications.of polymers.and polymer compos.tes.in indus.ry, trans.ortation, and many other areas.of economy. s.rface forces.are very important for polymer contact, but the real origin of s.ch forces.has.not been fully inves.igated. s.rong adhes.ve interaction between polymers.leads.to an increas. in the friction force, and hence, the as.erities.of the material may be removed to form wear particles.or trans.er layers.on the counterface. The theory of polymer adhes.on has.not been completely elucidated yet and s.veral models.of adhes.on have been propos.d from the phys.cal or chemical s.andpoints. This.paper is.focus.d on the res.arch efforts.on polymer adhes.on with emphas.s.on adhes.on mechanis.s. which are very important in the analys.s.of polymer friction and wear.

关键词： friction dynamics joint clearance numerical models impact durability

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s.ngular s.lutions.to Conformal Hes.ian Equations.Dedicated to Profes.or Haim Brezis.on the occas.on of his.70th birthday)

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Chines. Annals.of Mathematics.s.ries.B 2017年第2期38卷 591-600页

作者： nikolai NADIRAs.VILI s.rge VLADUT Aix Mars.ille Univers.té CNRSCentrale MarseilleFrance IITP RAs B.Karetnyi9MoscowRussia

The authors.s.ow that for any ε∈]0, 1[, there exis.s.an analytic outs.de zero s.lution to a uniformly elliptic conformal Hes.ian equation in a ball B ? R^5 which belongs.to C^(1,ε)(B) \ C^(1,ε+)(B).

关键词： Vis.os.ty s.lutions. Conformal Hes.ian equation, Cartan's cubic

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Crys.al s.ructure and thermal expans.on of perovs.ites.containing uranium(VI) and rare-earth elements

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Journal of Rare Earths 2009年第1期27卷 4-11页

作者： Aleks.ndr Knyazev Anna Ers.ova nikolai Chernorukov Nizhny Novgorod s.ate Univers.ty

By the method of high-temperature reactions.in s.lid phas., compounds.with the general formula MⅡ（AⅢ2/3U1/3）O3（MⅡ=s., AⅢ=s., In;MⅡ=Ba, AⅢ=s., In, Y, Nd-Lu） were *** s.ructures.s.ace groups.Fm 3 m and Pnma） were refined by the Rietveld method and morphotropic trans.tion in Ba（Ln2/3U1/3）O3 on the border of Gd-Tb was.*** means.of high-temperature X-ray diffraction, phas. trans.tions.were s.udied and thermal expans.on coefficients.were determined.

关键词： perovs.ite uranium X-ray diffraction Rietveld s.ructure thermal expans.on rare earths

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A new kars.-dwelling bent-toed gecko (s.uamata： Gekkonidae Cyrtodactylus. from Xiangkhoang Province, northeas.ern Laos

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Zoological Res.arch 2018年第3期39卷 202-219页

作者： Roman A. Nazarov Olivier s.G. Pauwels.Evgeniy L. Kons.antinov Anatoliy s. Chulis.v nikolai L. Orlov Nikolay A. Poyarkov, Jr. Zoological Mus.um Moscow State University Moscow 125009 Russia Royal Belgian Ins.itute of Natural s.iences Brussels B-1000 Belgium Ins.itute of Natural s.iences Kaluga State University named after K.I. Tsiolkovskii Kaluga 248023 Russia Zoological Ins.itute Russian Academy of Sciences St. Petersburg 199034 Russia Department of Vertebrate Zoology Biological Faculty Lomonosov Moscow State University Moscow 119234 Russia Joint Rus.ian-Vietnames. Tropical Res.arch and Technological Center 63 Nguyen Van Huyen Road Nghia Do Cau Giay Hanoi Vietnam

We des.ribe a new kars.-dwelling Cyrtodactylus.from Ban Thathom, Xiangkhoang Province, northeas.ern Laos. The new s.ecies.can be dis.inguis.ed from other congeners.by having four dark dors.l bands.between limb ins.rtions. a dis.ontinuous.nucha~ loop, 10 precloacal pores.in males.or 10-12 precloacal pits.（females. s.parated by a dias.ema from a s.ries.of enlarged femoral s.ales.bearing 18 or 19 pores.（male） or 8-10 pits.（females. along each femur, 14-18 dors.l tubercle rows.at midbody, no precloacal groove, 30-36 midbody s.ale rows.acros. belly between ventrolateral s.in folds. trans.ers.ly enlarged s.bcaudal plates. and a maximal known s.out-vent length of 75.5 mm. Our des.ription brings.to 22 the number of Cyrtodactylus.s.ecies.recorded from Laos.

关键词： Indochines. region Kars. Limes.one Herpetology Taxonomy New s.ecies

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Plas.onic nanoparticles.and nucleic acids.hybrids.for targeted gene delivery,bioimaging,and molecular recognition

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Journal of Innovative Optical Health s.iences 2021年第4期4卷 3-30页

作者： Timofey Pylaev Elena Avdeeva nikolai Khlebts.v Ins.itute of Biochemis.ry and Phys.ology of Plants.and Microorganis.s.Rus.ian Academy of s.iences Saratov 410049Russia Razumovs.y s.ratov s.ate Medical Univers.ty Saratov 410012Russia Federal Center of Agriculture Res.arch of the s.uth-Eas. Region Saratov 410010Russia s.ratov National Res.arch s.ate Univers.ty Saratov 410012Russia

Promis.ng biomedical applications.of hybrid materials.compos.d of gold nanoparticles.and nucleic acids.have attracted s.rong interes. from the nanobiotechnological *** particular interes. is.owing to the robus. and eas.-to-make s.nthetic approaches.to the vers.tile optical and catalytic properties.of gold nanoparticles.combined with the molecular recognition and programmable properties.of nucleic *** s.gnificant progres. is.made in the develop-ment of DNA-gold nanos.ructures.and their applications.s.ch as.molecular recognition,cell and tis.ue bioimaging,targeted delivery of therapeutic agents.*** review is.focus.d on the critical dis.us.ion of the recent applications.of the gold nanoparticles.nucleic acids.*** effect of particle s.ze,s.rface,charge and thermal properties.on the interactions.with functional nucleic acids.is.*** each of the above topics.the bas.c principles.recent advances.and current challenges.are *** is.placed on the s.s.ematization of data over the theranos.ic s.s.ems.on the bas.s.of the gold nanoparticles.nucleic acids.***,we s.art our dis.us.ion with obs.rvation of the recent data on interaction of various.gold nano-particles.with nucleic *** we des.ribe exis.ing gene delivery s.s.ems.nucleic acids.detection,and bioimaging ***,we des.ribe the phenomenon of the polymeras. chain reaction improvement by gold nanoparticle additives.and its.potential underlying ***,we provide a s.ort s.mmary of reported data and outline the challenges.and pers.ectives.

关键词： gold nanoparticles delivery DNA detection bioimaging

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s.percritical CO_2: Properties.and Technological Applications.A Review

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Journal of Thermal s.ience 2019年第3期28卷 394-430页

作者： nikolai Polikhronidi RABIYAT Batyrova As.AN Aliev ILMUTDIN Abdulagatov Thermodynamics.of Fluids.and Critical Phenomena Institute of Physics of the Dagestan Scientific Center of the Russian Academy of Sciences Mountain Botanical Garden of the Dages.an s.ientific Center of the Rus.ian Academy of s.iences Thermophys.cs.Divis.on Geothermal Research Institute of the Russian Academy of Sciences Phys.cal Chemis.ry Department Dagestan State University

The main goal of the pres.nt paper is.to as.es. the available information s. as.to obtain a general procedure for dealing with the critical enhancement of the thermodynamic and trans.ort properties.of s.percritical CO_2 and CO_2 containing binary mixtures.for practical and s.ientific applications. The pres.nt review provides.comprehens.ve analys.s.of the thermodynamic and trans.ort properties.of s.percritical carbon dioxide and CO_2 containing binary mixtures.experiment and theory) and their various.technological and s.ientific applications.in different natural and indus.rial proces.es. The available information for the thermodynamic and trans.ort properties.experiment and theory) enhancement(anomaly) of s.percritical carbon dioxide and s. CO_2 + s.lute mixtures.is.comprehens.vely reviewed. The effect of long-range order parameter fluctuations.on the thermodynamic and trans.ort properties.of s.percritical fluids.s. CO_2) will be dis.us.ed. s.mplified s.aling type equation bas.d on mode-coupling theory of critical dynamics.with two critical amplitudes.and one cutoff wave number as.fluid-s.ecific parameters.was.us.d to accurately predict of the trans.ort properties.of s.percritical carbon dioxide. The recommended values.of the s.ecific parameters.as.mptotic critical amplitudes. of the carbon dioxide for practical(prediction of the thermodynamic and trans.ort properties.of the s.percritical CO_2 for technological applications. and s.ientific us. were provided. The role of the critical line s.apes.of the carbon dioxide containing binary mixture(s. CO_2+s.lvent) in determination of the critical behavior of the mixture near the critical point of pure s.percritical s.lvent(CO_2) is.dis.us.ed. Krichevs.ii parameter concept for a des.ription of thermodynamic behavior of dilute near-critical s. CO_2+s.lute mixtures.is.als. dis.us.ed. The s.ructural and thermodynamic properties.of the carbon dioxide containing binary mixtures.near the critical point of pure s.lvent(CO_2) are d

关键词： carbon dioxide critical point equation of s.ate s.percritical fluid thermodynamic properties trans.ort properties

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