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Orientation Efforts as Regulatory Factor of Structure Formation in Permeable Porous Poly(vinylidene fluoride) Films

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Chinese Journal of Polymer Science 2019年第12期37卷 1283-1289,I0008页

作者： G.K.Elyashevich I.S.Kuryndin I.yu.Dmitriev v.K.Lavrentyev N.N.Saprykina v.Bukosek Institute of Macromolecular Compounds Russian Academy of SciencesBolshoi pr.31St.Petersburg 199004Russia Faculty for Natural Sciences and Engineering University of LjubljanaSnezniska c.5Ljubljana 1000Slovenia

The manufacturing process of poly(vinylidene fluoride)microporous films containing through flow channels and permeable to liquids has been *** process is based on polymer melt extrusion with subsequent stages of annealing,uniaxial extensions("cold"and"hot"drawing),and thermal *** effect of orientation parameters(melt draw ratio and extension degrees)on overall porosity,permeability,morphology,and content of polar piezoactiveβ-phase in crystalline structure of the films was investigated by filtration porosimetry,sorptometry,scanning electron microscopy,X-ray scattering,and mechanical properties *** is shown that the through pores were formed by a percolation *** is observed that permeability and theβ-phase content increased with the growth of extension degree at the pore formation stages but the portion ofβ-crystallites decreased with increasing melt draw ratio at extrusion,which permitted to regulate the combination of through permeability and piezoactivity values by variation of the preparation process parameters.

关键词： Poly(vinylidene fluoride) Microporous films Permeability Structure-property relations Piezoelectric properties

Substituted diamides of dipicolinic acid as extractants and ionophores for rare earth metals

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Journal of Rare Earths 2023年第8期41卷 1234-1241,I0005页

作者： Yingchao Ren valery A.Polukeev Ekaterina v.Kenf Liudmila I.Tkachenko Mikhail yu Alyapyshev vasily A.Babain Andrey v.Nechaev Andrey v.Legin Dmitry O.Kirsanov Institute of Chemistry Saint-Petersburg UniversityPeterhofUniversitetsky Prospect 26198504Saint-PetersburgRussia JSvC vekton Ul.2-oy Luch 9192019Saint-PetersburgRussia Khlopin Radium Institute 194021282nd Murinsky avRussia ThreeArc Mining LLC Pr.Narodnogo Opolchenia 10198216Saint-PetersburgRussia Rusredmet Vosstanovleniya str.15bl.3198320St.PeterburgKrasnoe seloRussia

The variety of newly synthesized diamides of dipicolinic acid(DPA)bearing methyl-and oxymethyl substituents in various positions of phenyl ring was investigated as potential ligands for liquid-liquid extraction of rare earth metal ions and as membrane active compounds in plasticized polymeric membranes of potentiometric *** is found that scandium is extracted with 2,6-pyridinedicarboxylic acid diamides similarly to heavy lanthanides,while yttrium is extracted together with light group *** shows high selectivity for the separation of cadmium/zinc,lead/nickel or copper/nickel *** four out of six studied ligands demonstrate significant potentiometric sensitivity towards scandium,yttrium and lanthanides in 10^(-7)-10^(-3)mol/L concentration range in nitric acid *** trends in sensitivity values vary depending on a ligand structure and the highest values are observed for Sc^(3+)and heavy *** to the evaluated selectivity Sm^(3+)is the most preferred ion,while La^(3+)is the most *** differences in sensor behavior in rare earth metal solutions assume that such devices can be applied in sensor arrays for potentiometric analysis of lanthanide mixtures.

关键词： Dipicolini cacid diamides Scandium Yttrium Lanthanides Extraction Potentiometric sensors

NIR emitting terephthalates(SmxDyyGd1-x-y)2(tph)3(H2O)4 for luminescence thermometry in the physiological range

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Journal of Rare Earths 2020年第5期38卷 492-497页

作者： Anastasia v.Orlova vladislava yu.Kozhevnikova Leonid S.Lepnev Alexander S.Goloveshkin Irina M.Le-Deigen valentina v.Utochnikova M.v.Lomonosov Moscow State University 1/3 Leninskye GoryMoscow119991Russian Federation P.N.Lebedev Physical Institute Leninsky prosp.531J9991MoscowRussian Federation A.N.Nesmeyanov Institute of Organoelement Compounds Russian Academy of SciencesVavilova St.28119991MoscowRussian Federation EvOLED Ltd. 1A-24 Puskina ielaRiga LV-1050Latvia

The first luminescence thermometer based on coordination compound of samarium and dysprosium is repo *** luminescence intensity and high signal resolution are reached thanks to the concentration quenching reduction due to the use of the trimetallic complexes of *** best thermometric properties in a wide temperature range among the studied systems are demonstrated by(Sm0.2Dy0.15Gd0.65)2(tph)3(H2O)*** sensitivity reaches 0.5%/K in visible range and 1.2%/K in NIR range at low temperatures and 0.5%/K and 0.8%/K in physiological range.

关键词： Luminescence Lanthanides Carboxylates Thermometry NIR range Rare earths

Effects of europium concentration on luminescent and scintillation performance of Cs_(0.2)Rb_(0.8)Ca_(1-x)Eu_(x)Br_(3)(0≤x≤0.08)crystals

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Journal of Rare Earths 2022年第1期40卷 29-33页

作者： N.v.Rebrova A.yu.Grippa I.A.Boiaryntseva P.Berastegui T.E.Gorbacheva yu.N.Datsko A.L.Rebrov C.Dujardin R.Calà L.Martinazzoli E.Auffray v.v.Kononets Institute for Scintillation Materials National Academy of Sciences of UkraineNauky Avenue 6061072KharkovUkraine Department of Chemistry Angstrom LaboratoryInorganic ChemistryUppsala University.PO.Box 583.75121.UppsalaSweden Claude Bernard Lyon 1 University CNRSInstitute of Light and MatterUMR 5306F-69100 VilleurbanneFrance The University of Milano-Bicocca Piazza dell'Ateneo Nuovo1-20126Milano.Italy CERN EP DepartmentP.0.Box 1211Geneva 23Switzerland

A series of Cs_(0.2)Rb_(0.8)Ca_(1-x)Eu_(x)Br_(3)(0≤x≤0.08)crystals doped with different concentrations of Eu^(2+)were grown using the Bridgman-Stockbarger *** work describes the influence of Eu^(2+)concentration on the luminescent and kinetic properties of Cs_(0.2)Rb_(0.8)Ca_(1-x)Eu_(x)Br_(3) crystals,as well as on their scintillation *** maximum in the radioluminescence spectra of these crystals shifts from 439 to446 nm with increasing europium *** scintillation decay times of Cs_(0.2)Rb_(0.8)Ca_(1-x)Eu_(x)Br_(3) lengthen with the Eu^(2+)*** best light output of 33600photons/Mev is obtained for Cs_(0.2)Rb_(0.8)Ca_(0.93)Eu_(0.07)Br_(3),and the best energy resolution of 6.9%is found for Cs_(0.2)Rb_(0.8)Ca_(0.94)Eu_(0.06)Br_(3).

关键词： Inorganic material Crystal growth Luminescence Rare-earth doped scintillator X-ray and gamma-ray spectroscopies

Cassini's motions of the Moon and Mercury and possible excitations of free librations

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Geodesy and Geodynamics 2018年第6期9卷 474-484页

作者： yu.v.Barkin Jose Ferrandiz Shuanggen Jin M.yu.Barkine Sternberg Astronomical Institute Moscow State University Moscow 119992 Russia University of Alicante Alicante Spain Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Department of Geomatics Engineering Bulent Ecevit University Zonguldak 67100 Turkey Bauman Moscow State Technical University Moscow 119992 Russia

On the basis of conditionally-periodic solutions of Hamiltonian systems at resonance of main frequencies Cassini’s motions, their stability, Cassini’s angle and periods of free librations of the Moon and Mercury have been recently studied and determined. The generalized formulations of Cassini’s laws for the motion of the Moon and Mercury, that are considered as absolutely rigid non-spherical bodies, have been determined. The study of the second approximation equations of the desired quasi-periodic solutions in the case of the Moon allows us to determine the constant components of the first order for six Andoyer variables and the constant component of the second order for the angular velocity of the Moon. These effects are caused by the influence of the third harmonic of selenopotential. In this paper, these effects are described by analytical formulas, the dynamic and geometric interpretations are given, and a new interpretation of Mercury’s motion under the generalized Cassini’s laws has been proposed. Predictions of the existence of free librations of significant amplitude in the Mercury longitude, that are confirmed by the radar measurements data of the Mercury angular velocity, and in its pole motion in the body and in space have been made. The mechanism describing free librations of celestial bodies and their pole oscillations has been proposed due to the forced relative oscillations and wobble of the core-mantle system of celestial bodies（Moon, Mercury, Earth and other bodies in the solar system） under gravitational action of the external celestial bodies. The paper shows that the ascending node of equator of Mercury（and the intermediate plane orthogonal to the angular momentum） of epoch 2000.0 on the ecliptic does not coincide with the ascending node of orbital plane of Mercury on the same plane, and is ahead of it at an angle 23°4’. Angular momentum vector of the rotational motion of Mercury forms a constant angle p;=4’1±1’1 with normal to the moveable plan

关键词： Cassini's motions Moon Mercury

3D model of Svecofennian Accretionary Orogen and Karelia Craton based on geology,reflection seismics,magnetotellurics and density modelling:Geodynamic speculations

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Geoscience Frontiers 2020年第3期11卷 999-1023页

作者： Michael v.Mints victor N.Glaznev Olga M.Muravina Elena yu Sokolova Geological Institute RASMoscowRussia voronezh State University VoronezhRussia Schmidt Institute of Physics of the Earth RASMoscowRussia All-Russian Research Geological Oil Institute MoscowRussia

A 3D model of deep crustal structure of the Archaean Karelia Craton and late Palaeoproterozoic Svecofennian Accretionary Orogen including the boundary zone is *** model is based on the combination of data from geological mapping and reflection seismic studies,along profiles 1-EU,4 B,FIRE-1-2 a-2 and FIRE-3-3 a,and uses results of magnetotelluric soundings in southern Finland and northern Karelia.A seismogeological model of the crust and crust-mantle boundary is compared with a model of subhorizontal velocity-density layering of the *** TTG-type crust of the Palaeoarchaean and Mesoarchaean microcontinents within the Karelia Craton and the Belomorian Province are separated by gently dipping greenstone belts,at least some of which are *** structure of the crust was determined mainly by Palaeoproterozoic tectonism in the intracontinental settings modified by a strong collisional compression at the end of the *** insights into structure,origin and evolution of the Svecofennian Orogen are *** accretionary complex is characterized by inclined tectonic layering:the tectonic sheets,~15 km thick,are composed of volcanic-sedimentary rocks,including electro-conductive graphite-bearing sedimentary rocks,and electro-resistive granitoids,which plunge monotonously and consecutively *** reaching the level of the lower crust,the tectonic sheets of the accretionary complex lose their distinct *** the seismic reflection pattern they are replaced by a uniform acoustically translucent medium,where separate sheets can only be traced *** crust-mantle boundary bears a diffuse character:the transition from crust to mantle is recorded by the disappearance of the vaguely drawn boundaries of the tectonic sheets and in the gradual transition of acoustically homogeneous and translucent lower crust into transparent *** the effect of endogenic heat flow,the accretionary complex underwent high-temperatu

关键词： Reflection seismics Magnetotellurics Svecofennian accretionary Orogen Svecofennian Ocean 3D crustal model velocity-density layering

Recent results from the KEDR detector

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Chinese Physics C 2010年第6期34卷 650-655页

作者： v.v.Anashin v.M.Aulchenko E.M.Baldin A.K.Barladyan A.yu.Barnyakov M.yu.Barnyakov S.E.Baru I.v.Bedny O.L.Beloborodova A.E.Blinov v.E.Blinov A.v.Bobrov v.S.Bobrovnikov A.v.Bogomyagkov A.E.Bondar A.R.Buzykaev S.I.Eidelman yu.M.Glukhovchenko v.v.Gulevich D.v.Gusev S.E.Karnaev S.v.Karpov T.A.Kharlamova v.A.Kiselev S.A.Kononov K.yu.Kotov E.A.Kravchenko v.F.Kulikov G.Ya.Kurkin E.A.Kuper E.B.Levichev D.A.Maksimov v.M.Malyshev A.L.Maslennikov A.S.Medvedko O.I.Meshkov S.I.Mishnev I.I.Morozov N.yu.Muchnoi v.v.Neufeld S.A.Nikitin I.B.Nikolaev I.N.Okunev A.P.Onuchin S.B.Oreshkin I.O.Orlov A.A.Osipov S.v.Peleganchuk S.G.Pivovarov P.A.Piminov v.v.Petrov A.O.Poluektov I.N.Popkov v.G.Prisekin A.A.Ruban v.K.Sandyrev G.A.Savinov A.G.Shamov D.N.Shatilov B.A.Shwartz E.A.Simonov S.v.Sinyatkin yu.I.Skovpen A.N.Skrinsky v.v.Smaluk A.v.Sokolov A.M.Sukharev E.v.Starostina A.A.Talyshev v.A.Tayursky v.I.Telnov yu.A.Tikhonov K.yu.Todyshev G.M.Tumaikin yu.v.Usov A.I.vorobiov A.N.yushkov v.N.Zhilich v.v.Zhulanov A.N.Zhuravlev Budker Institute of Nuclear Physics Novosibirsk State University Novosibirsk State Technical University 20Karl Marx prospectNovosibirsk630092Russia

We report results of experiments performed with the KEDR detector at the vEPP-4M e^＋e^- collider. They include precise measurement of the D^0 and D^± meson masses, determination of the ψ（3770） resonance parameter... 详细信息

关键词： D meson ψ(3770) mass narrow resonances

RNA-protein distance patterns in ribosomes reveal the mechanism of translational attenuation

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Science China(Life Sciences) 2014年第11期57卷 1131-1139页

作者： yu DongMei ZHANG Chao QIN PeiWu CORNISH v.Peter XU Dong Department of Biological Engineering University of Missouri C.S. Bond Life Science Center University of Missouri Department of Computer Science University of Missouri Department of Biochemistry University of Missouri

Elucidating protein translational regulation is crucial for understanding cellular function and drug development.A key molecule in protein translation is ribosome,which is a super-molecular complex extensively studied for more than a half *** structure and dynamics of ribosome complexes were resolved recently thanks to the development of X-ray crystallography,Cryo-EM,and single molecule *** studies of the ribosome have shown multiple functional states,each with a unique *** this study,we analyzed the RNA-protein distances of ribosome(2.5 MDa)complexes and compared these changes among different ribosome *** found that the RNA-protein distance is significantly correlated with the ribosomal functional ***,the analysis of RNA-protein binding distances at important functional sites can distinguish ribosomal functional states and help understand ribosome *** particular,the mechanism of translational attenuation by nascent peptides and antibiotics was revealed by the conformational changes of local functional sites.

关键词： ribosome protein translation antibiotics translocation RNA-protein interaction

Formation of Nanoscale Intermetallic Phases in Ni Surface Layer at High Intensity Implantation of Al Ions

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Journal of Materials Science & Technology 2004年第5期20卷 583-586页

作者： I.A.Bozhko S.v.Fortuna I.A.Kurzina I.B.Stepanov E.v.Kozlov yu.P.Sharkeev Tomsk State University of Architecture & Building 2 Solyanaya pl.Tomsk 634003RussiaTomsk State University of Architecture & Building2 Solyanaya pl.Tomsk 634003RussiaTomsk State University of Architecture & Building2 Solyanaya pl.Tomsk 634003RussiaNuclear Physics InstituteTomsk Polytechnic University2a Lenin Str.Tomsk 634050RussiaTomsk State University of Architecture & Building2 Solyanaya pl.Tomsk 634003.RussiaInstitute of Strength Physics and Materials ScienceRussian Academy of Sciences2/1 Pr.AkademicheskiiTomsk 634021Russia

The results of experimental study of nanoscale intermetallic formation in surface layer of a metal target at ion implantation are presented. To increase the thickness of the ion implanted surface layer the high intensive ion implantation is used. Compared with the ordinary ion implantation, the high intensive ion implantation allows a much thicker modified surface layer. Pure polycrystalline nickel was chosen as a target. Nickel samples were irradiated with Al ions on the vacuum-arc ion beam and plasma flow source 'Raduga-5'. It was shown that at the high intensity ion implantation the fine dispersed particles of Ni3AI, NiAl intermetallic compounds and solid solution Al in Ni are formed in the nickel surface layer of 200 nm and thicker. The formation of phases takes place in complete correspondence with the Ni-AI phase diagram.

关键词： High intensive ion implantation Ion-plasma source Intermetallic nanophases