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Journal of Analysis and Testing 2023年第4期7卷 435-443页

作者： Valeriia Maksimova Varvara Lapina Leonid Martynov Andrey Shishov Olga Mokhodoeva Vernadsky Institute of Geochemistry and Analytical Chemistry Russian Academy of SciencesMoscow 119991Russian Federation Lomonosov Institute of Fine Chemical Technologies MIREA-Russian Technological UniversityMoscow 119454Russian Federation Department of Analytical Chemistry Institute of ChemistrySaint-Petersburg State UniversitySt.Petersburg 199034Russian Federation

A novel analytical procedure for the determination of gold by electrothermal atomic absorption spectrometry combined with selective liquid-liquid extraction by natural deep eutectic solvents(NADESs)is *** extraction ability of the NADESs prepared using menthol,thymol and camphor toward gold in hydrochloric acid solutions was *** extraction efficiency was improved by optimizing the parameters including the composition of the NADES s,the volume ratio of organic and aqueous phases,kinetics,and acidity of the *** determination of gold was carried out by electrothermal atomic absorption spectrometry directly in the NADES s phase dissolved in isopropyl *** extraction recovery of gold from 1 mol/L HCl with the NADESs based on menthol and camphor mixed in a molar ratio 1:1 was 99.7%at an enrichment factor of *** limits of detection and quantification of the proposed procedure were 1μg/L and 3.3μg/L,respectively,with a relative standard deviation of less than 5%.The developed procedure was applied for determination of gold in the certified reference material of ore,environmental and waste waters.

关键词： Gold Liquid-liquid extraction Menthol/camphor Natural deep eutectic solvents(NADESs) Electrothermal atomic absorption spectrometry(ETAAS)

Low-Energy Driven Ring-Opening Behavior of Benzocyclobutene Derivatives

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Chinese Journal of Chemistry 2023年第23期41卷 3238-3244页

作者： Ziwei Yuan Quan Sun Jinchong Xiao Pingxia Zhang Konstantin S.Levchenko Dmitry Y.Demin Wenxin Fu Laboratory of Science and Technology on High-Tech Polymer Materials Institute of ChemistryChinese Academy of SciencesBeijing100190 China College of Chemistry and Material Science Hebei UniversityBaodingHebei071002 China University of Chinese Academy of Sciences Beijing100049 China mirea — Russian Technological University Moscow119454 Russian Federation

It's urgent to develop benzocyclobutene(BCB)-based polymers with low curing temperature for temperature-sensitive applications such as liquid crystal displays(LCDs)and flexible ***,the effect of substituents on the ring-opening behavior of BCB derivatives was *** ring-opening activation energy barriers(ΔGA)of BCB derivatives with one or two substituents on the four-membered alkyl ring were systematically calculated using the B3LYP *** mono-and di-substituted BCBs adopted the conrotatory ring-opening process,obeying the Woodward-Hoffmann's Rules upon *** mono-/di-substituted BCBs exhibited 8.2%—69%lowerΔGA compared with BCB,attributed to the electronic effects of the *** BCBs with both electron-donating and electron-withdrawing groups,e.g.,1-NH_(2)-8-NO_(2)-BCB,demonstrated the lowestΔ*** addition,BCB derivatives with amide/ester/acyloxy group modified on C1 position were synthesized as model molecules,and their ring-opening temperature can be decreased by 20℃ compared to the unsubstituted one,also consistent with our calculation *** work combined theoretical calculation methods with experimental results to provide valuable insights into the design and synthesis of BCB derivatives and next-generation BCB functional packaging materials with low ring-opening temperature.

关键词： Benzocyclobutene Thermosets Monomers Low curing temperature Activation energy barrier Electronic effect Captodative effect

The New Inversion of Laplace Transform

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Journal of Mathematics and System Science 2014年第3期4卷 197-201页

作者： Andrey Pavlov V. high.Mathem.-1 MIREA 78 pr. Vernadskogo II 7454 Moscow Russia.

The new inversion formula of the Laplace transform is considered. In the formula we use only the positive values ofx SiCoLT（x） = c S（x）, L（S（x）） = T（x）, c = const., x 〉 O,from the real axis. Si is the sinus... 详细信息

关键词： Laplace transform new inversion formula of Laplace transform evenness of Laplace transform integral transform ofFourier

Self-focusing of UV radiation in 1mmscale plasma in a deep ablative crater produced by 100ns,1 GW KrF laser pulse in the context of ICF

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Matter and Radiation at Extremes 2020年第3期5卷 11-19页

作者： V.D.Zvorykin I.G.Lebo A.V.Shutov N.N.Ustinovskii Lebedev Physical Institute of RAS 53 Leninskiy Pr.Moscow 119991Russian Federation mirea-Russian Technological University Institute of Cybernetics78 Vernadskogo Pr.Moscow 119454Russian Federation

Experiments at the GARPUN KrF laser facility and 2D simulations using the NUTCY code were performed to study the irradiation of metal and polymethyl methacrylate(PMMA)targets by 100 nsUVpulses at intensities up to 5×10^(12)Wcm^(−2).In both targets,a deep crater of length 1mm was produced owing to the 2D geometry of the supersonic propagation of the ablation front in condensed matter that was pushed sideways by a conical shock ***-scale filamentation of the laser beam caused by thermal self-focusing of radiation in the crater-confined plasma was evidenced by the presence of a microcrater relief on the bottom of the main *** translucent PMMA,with a penetration depth forUVlight of several hundred micrometers,a long narrow channel of length 1mmand diameter 30μmwas observed emerging from the crater *** channels with a length-to-diameter aspect ratio of∼1000 were produced by a repeated-pulse KrF laser in PMMA and fused silica glass at an intensity of∼10^(9)Wcm^(−2).This channel formation is attributed to the effects of radiation self-focusing in the plasma and Kerr self-focusing in a partially transparent target material after shallow-angle reflection by the crater *** modeling of the initial stage of inertial confinement fusion-scale direct-drive KrF laser interaction with subcritical coronal plasmas from spherical and cone-type targets using craterconfined plasmas seems to be feasible with increased laser intensity above 10^(14) W cm^(−2).

关键词： KrF pulse transparent

Dielectric properties of bismuth-containing pyrochlores:A comparative analysis

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Journal of Advanced Dielectrics 2022年第2期12卷 29-35页

作者： M.V.Talanov E.V.Glazunova V.I.Kozlov S.P.Kubrin A.A.Bush V.M.Talanov K.E.Kamentsev Research Institute of Physics Southern Federal University av.Stachki 193 Rostov-on-Don344090Russia Research Institute of Solid State Electronics Materials mirea-Russian Technological University(RTU mirea)5th Street of Sokolinaya Gora 22 Moscow 119454Russia Technological Department Platov South-Russian State Polytechnic University(NPI)Prosvescheniya Str.132 Novocherkassk 346428Russia

The comparative analysis of the dielectric properties of bismuth-containing pyrochlores with different manifestation of atomic order/disorder was carried *** examined the dielectric properties(including behavior in electric fields)of two pyrochlore compounds:BZN(presumably a composition close to Bi_(1.5)Zn_(0.5)Nb_(1.5)O_(6.5))ceramics with chemical disorder in both A and B cation sublattices and Bi_(2)Ti_(2)O_(7)single crystal with fully chemical ordered *** fundamental differences between the dielectric properties of the BZN ceramics and Bi_(2)Ti_(2)O_(7)single crystal were *** particular,in the dielectric relaxation behavior(which cannot be described via Arrhenius law in the Bi_(2)Ti_(2)O_(7))or in the influence of the electric fields on the dielectric permittivity(split-ting of the field-cooled and zero-field-cooled behaviors was observed for Bi_(2)Ti_(2)O_(7)below estimated freezing temperature).The results of this study highlights the special role of Bi_(2)Ti_(2)O_(7)as a candidate material for studying aspects of geometric frustration related with pyrochlore structure in non-magnetic medium and specifies the future directions of research.

关键词： Pyrochlores relaxor behavior bismuth titanate dielectric permittivity geometric frustration

Domain formation on the nonpolar lithium niobate surfaces under electron-beam irradiation:A review

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Journal of Advanced Dielectrics 2018年第2期8卷 1-10页

作者： T.R.Volk L.S.Kokhanchik R.V.Gainutdinov Y.V.Bodnarchuk S.D.Lavrov Shubnikov Institute of Crystallography of Federal Scientific Research Centre“Crystallography and Photonics”of Russian Academy of Sciences Moscow 119333 Russia Institute of Microelectronics Technology and High Purity Materials Russian Academy of Science Moscow 142432Russia Moscow Technological University(mirea) Moscow 119454Russia

In this review,our recent results on the electron-beam domain writing(EBDW)on the nonpolar surfaces of LiNbO_(3) crystals of different compositions are *** EB irradiation of the nonpolar surfaces,domains nucleated in irradiation points grow frontally along the polar Z-direction in a thin(of microns in thickness)surface layer;the driving force is the tangential component of space-charge fields induced by EB in irradiation *** geometry of the experiment provides a possibility of three-dimensional(3D)characterization of domain patterns using the combination of atomic force microscopy(AFM)and second harmonic generation(SHG)confocal microscopy *** obtained results permitted us to relate the main characteristics of domain formation(the domain sizes and velocity Vf of the frontal motion)to the irradiation conditions(the accelerating voltage U of scanning electron microscopy(SEM),EB current I,the inserted charge Q).The domain depth Td is controlled by U via the electron penetration depth;the domain length Ld increases linearly with Q owing to the domain frontal growth by the viscous friction *** electron emission coefficientaffects the domain formation due to the fundamental dependence ofon *** the framework of current approach to EB charging of insulators,the effect of an enhanced conductance on EBDW characteristics is *** difference between EBDW characteristics observed in varied LiNbO_(3) compositions is discussed in the framework of the intrinsic defect structure of LiNbO_(3).The obtained results extend the possibility of EBDW application to a wider range of crystals.

关键词： Domains electron beam lithium niobate

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稳态等离子体发动机磁场设计的发展及其展望

中国工程科学 2005年第4期7卷 22-29页

作者：于达仁武志文鄂鹏 A.I.Bugrova 哈尔滨工业大学能源科学与工程学院 Ring(mirea) Prospect Vernardskogo78Moskow117454Russia

论述了稳态等离子体发动机对于我国空间发展战略的重要意义和作用,指出磁场设计是提高稳态等离子体发动机性能的关键技术之一;分析了稳态等离子体发动机通道内磁场设计的发展过程,在此基础上提出了用于稳态等离子发动机磁场设计的体系... 详细信息

论述了稳态等离子体发动机对于我国空间发展战略的重要意义和作用,指出磁场设计是提高稳态等离子体发动机性能的关键技术之一;分析了稳态等离子体发动机通道内磁场设计的发展过程,在此基础上提出了用于稳态等离子发动机磁场设计的体系化构想,并且指出了其中存在的一些关键问题和拟采取的解决措施以及磁场体系化设计对稳态等离子体发动机带来的预期效益和影响;最后展望了稳态等离子体发动机磁场设计体系的进一步发展和应用。

关键词：空间电推进稳态等离子体发动机磁场设计发展趋势

Synthesis of Monodisperse Latexes to Create Immunodiagnostic Drugs

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材料科学与工程（中英文A版） 2022年第1期12卷 24-27页

作者： Arnos Arshaki Hovhannisyan Gayane Karlosi Grigoryan Mishal Khaddazh Narine Hamleti Grigoryan Arsen Gvidoni Nadaryan Scientific and Technological Center for Organic and Pharmaceutical Chemistry of the National Academy of Sciences of Armenia Azatutyan Ave.26Yerevan 0014Armenia Institute of Fine Chem.Technologies Russian Technological University-MIREARussian FederationVernadskogo Ave86Moscow 119454Russia

The aim of this work was the synthesis of monodisperse latexes based on methyl *** achieve this goal,methyl methacrylate was polymerized in an emulsifier-free static heterogeneous monomer-water system in the presence of hydroquinone and potassium *** size of the latex particles was determined by electron *** latexes with a diameter of about 100 nm were synthesized as a result.

关键词： EP(Emulsion polymerization) latexes methyl methacrylate static system