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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Шишацкая, Екатерина Игоревна, Николаева Е. Д., Шумилова А. А., Шабанов, Александр Васильевич, Волова, Татьяна Григорьевна
Заглавие : Культивирование мультипотентных мезенхимных стромальных клеток костного мозга на носителях из резорбируемого биопластотана
Разночтения заглавия :Загл. в Scopus: Cultivation of multipotent mesenchymal bone marrow cells on matrixes made of resorbable bioplastotan
Место публикации : Клеточная трансплантология и тканевая инженерия. - 2013. - Т. 8, Вып. 1. - P.57-65. - ISSN 1815-445X; Cell. Transplant. Tissue Eng. - 2013. - Vol. 8, Is. 1. - P.57-65
Ключевые слова (''Своб.индексиров.''): alkaline phosphatase--differentiation--extracellular calcium precipitates--multipotent mesenchymal stromal cells--osteopontin--resorbable bioplastotan
Аннотация: В работе охарактеризовано «семейство» клеточных носителей из резорбируемого полиэфира Биопластотан, представляющего собой сополимер 3- и 4-гидроксипро-изводных масляной кислоты. С применением различных технологий сконструированы пленочные и 3D носители, а также наноматриксы, образованные ультратонкими волокнами, полученные методом электростатического формования. Все типы носителей обеспечивают адгезию муль-типотентных мезенхимных стромальных клеток костного мозга и пригодны для культивирования и дифференцировки мультипотентных мезенхимных стромальных клеток в клетки остеобластического ряда. Последнее подтверждено детектированием в культуре клеток внеклеточных преципитатов кальция, активности щелочной фосфатазы и продукции остеопонтина.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ritter C., Pankrats A. I., Gudim I. A., Vorotynov A. M.
Заглавие : Magnetic structure of iron borate DyFe3(BO3)4: A neutron diffraction study
Коллективы : European Conference on Neutron Scattering
Место публикации : J. Phys.: Conf. Ser.: IOP Publishing Ltd, 2012. - Vol. 340. - Ст.012065. - ISSN 1742-6588, DOI 10.1088/1742-6596/340/1/012065
Примечания : Cited References: 22
Ключевые слова (''Своб.индексиров.''): antiferromagnetics--crystallographic structure--easy-axis anisotropy--iron borate--kramers doublet--low temperatures--magnetic propagation--neutron diffraction measurements--repopulation--room temperature--spin reorientation--sub-lattices--thermal dependences--unit cells
Аннотация: Neutron diffraction measurements were performed on the iron borate DyFe3(BO3)4 to investigate details of the crystallographic structure, the low temperature magnetic structure and its magnetic properties. DyFe3(BO3)4 adopts at room temperature the P3121 symmetry and becomes antiferromagnetic below TN = 39 K. Both, the rare earth and the iron sublattice, follow the same magnetic propagation vector τ = [0, 0, ½] which leads to a doubling of the crystallographic unit cell in the c-direction. The easy axis anisotropy of the rare earth determines the moment orientation to be mainly along c. No spin reorientation is found between TN and 1.5 K, however, a small anomaly in the thermal dependence of the unit cell a-parameter is found at about 27 K which could be connected to repopulation of low lying Kramers doublets of Dy3+. The magnetic moment value of the Fe-moment is at 1.5 K with μFe = 4.5 μB only slightly smaller than expected for an S = 5/2 ion while the Dy moment is strongly reduced and amounts only to μDy = 6.4 μB.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova T., Goncharov D., Sukovatyi A. G., Shabanov A. V., Nikolaeva E., Shishatskaya E.
Заглавие : Electrospinning of polyhydroxyalkanoate fibrous scaffolds: effects on electrospinning parameters on structure and properties
Коллективы : Project 'Biotechnologies of novel biomaterials: innovative biopolymers and devices for biomedicine' [1, 11.G34.31.0013]; Government of the Russian Federation [220]; RF President for supporting young Doctors of Sciences [MD-3112.2012.4]
Место публикации : J. Biomater. Sci.-Polym. Ed.: Taylor & Francis, 2014. - Vol. 25, Is. 4. - P.370-393. - ISSN 0920-5063, DOI 10.1080/09205063.2013.862400. - ISSN 1568-5624
Примечания : Cited References: 52. - This study was financially supported by Project 'Biotechnologies of novel biomaterials: innovative biopolymers and devices for biomedicine' (Agreement No. 1 of 15.02.2013 to Agreement No. 11.G34.31.0013) in accordance with Resolution No. 220 of the Government of the Russian Federation of April 9, 2010, 'On measures designed to attract leading scientists to the Russian institutions of higher learning' and Grant of the RF President for supporting young Doctors of Sciences No. MD-3112.2012.4.
Предметные рубрики: TISSUE ENGINEERING APPLICATIONS
FIBER MATS
POLY 3-HYDROXYBUTYRATE
POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE)
BIOCOMPATIBILITY
PROLIFERATION
FABRICATION
NANOFIBERS
COPOLYMERS
MEMBRANES
Ключевые слова (''Своб.индексиров.''): electrospinning--polyhydroxyalkanoates--ultrafine fibers--physical-mechanical properties--fibroblast cells
Аннотация: IIn this study, electrospinning was used to prepare ultrafine fibers from PHAs with different chemical compositions: P(3HB) and copolymers: P(3HB-co-4HB), P(3HB-co-3HV), and P(3HB-co-3HHx). The main process parameters that influence ultrafine fiber diameter and properties (polymer concentration, solution feeding rate, working distance, and applied voltage) have been investigated and their effects evaluated. The study revealed electrospinning parameters for the production of high-quality ultrafine fibers and determined which parameters should be varied to tailor the properties of the products. This study is the first to compare biological and physical-mechanical parameters of PHAs with different chemical compositions as dependent upon the fractions of monomers constituting the polymers and ultrafine fiber orientation. Mechanical strength of aligned ultrafine fibers prepared from different PHAs is higher than that of randomly oriented ones; no significant effect of ultrafine fiber orientation on surface properties has been found. None of the fibrous scaffolds produced by electrospinning from PHAs had any adverse effects on attachment, growth, and viability of NIH 3T3 mouse fibroblast cells, and all of them were found to be suitable for tissue engineering applications.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sutormin V. S., Krakhalev M. N., Lee W., Zyryanov V. Ya.
Заглавие : Optical properties of LC cells controlled by the electrically induced ionic modification of the surface anchoring
Коллективы : Topical Meeting on the Optics of Liquid Crystals
Место публикации : 16th Topical Meet. on the Opt. of Liq. Cryst. (OLC 2015): book of abstr. - 2015. - Ст.O-13
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kim P. D., Zamay S. S., Zamay T. N., Prokopenko V. S., Kolovskaya O. S., Zamay G. S., Princ, V. Ya., Seleznev V. A., Komonov A. I., Spivak E. A., Rudenko R. Y., Dubinina A. V., Komarov A. V., Denisenko V. V., Komarova M. A., Sokolov A. E., Narodov A. A., Zjivaev V. P., Zamay A. S.
Заглавие : The antitumor effect of magnetic nanodisks and DNA aptamer conjugates
Коллективы : Russian Science Foundation [14-15-00805]
Место публикации : Dokl. Biochem. Biophys.: MAIK Nauka-Interperiodica / Springer, 2016. - Vol. 466, Is. 1. - P.66-69. - ISSN 1607-6729, DOI 10.1134/S1607672916010154. - ISSN 1608-3091(eISSN)
Примечания : Cited References:7. - This work was supported by the Russian Science Foundation (project no. 14-15-00805).
Предметные рубрики: Nanoparticles
Cells
Аннотация: Here we describe a method of forming large arrays (up to 109 pieces) of free magnetic Ni-nanodisks 50 nm thick coated on both sides with layers of 5 nm thick Au. The antitumor effect of the magnetic nickel gold-coated nanodisks and DNA aptamer conjugates was evaluated in vivo and in vitro. Under the influence of rotating magnetic field, the studied nanodisks can cause the death of Ehrlich ascites carcinoma cells.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gunyakov V. A., Krakhalev M. N., Zyryanov V. Ya., Shabanov V. F., Loiko V. A.
Заглавие : Modulation of defect modes intensity by controlled light scattering in photonic crystal with liquid crystal domain structure
Коллективы : Conference on Electromagnetic and Light Scattering
Место публикации : J. Quant. Spectrosc. Radiat. Transf. - 2016. - Vol. 178: Electromagnetic and light scattering by nonspherical particles XV: Celebrating 150 years of Maxwell's electromagnetics. - P.152-157. - ISSN 0022-4073, DOI 10.1016/j.jqsrt.2015.11.018. - ISSN 1879-1352(eISSN)
Примечания : Cited References:24
Предметные рубрики: Transmission
Cells
Ключевые слова (''Своб.индексиров.''): photonic crystal--liquid crystal--spatial extended system--electrohydrodynamic instability--light scattering
Аннотация: A method to modulate the defect modes intensity in a multilayer photonic crystal with a nematic liquid crystal layer arranged midmost has been proposed. The various electro-hydrodynamic domain structures (Williams domains, oblique rolls and grid pattern) were formed in the nematic layer under the action of ac electric field. The domains cause a polarization-sensitive light scattering which leads to an anisotropic reduction of the defect modes intensity. Thus by varying the applied voltage, we can tune gradually the transmittance spectrum of photonic crystal. In addition, the spectrum strongly depends on the light polarization direction above threshold voltage. (C) 2015 Elsevier Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ovchinnikov S. G., Makarov I. A., Shneyder E. I.
Заглавие : Effect of interlayer tunneling on the electronic structure of bilayer cuprates and quantum phase transitions in carrier concentration and high magnetic field
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 112, Is. 2. - P288-302. - ISSN 1063-7761, DOI 10.1134/S106377611005119X
Примечания : Cited References: 64. - This study was supported financially by the program "Quantum Physics of Condensed Media" of the Presidium of the Russian Academy of Sciences (project no. 5.7), the integration projects of the Siberian Branch and the Ural Division of the Russian Academy of Sciences (project no. 40), the Russian Foundation for Basic Research (project no. 09-02-00127), the President of the Russian Federation (grant no. MK-1683.2010.2), and the Federal Target Program P891.
Предметные рубрики: T-J MODEL
HIGH-TEMPERATURE SUPERCONDUCTORS
DIMENSIONAL HUBBARD-MODEL
FERMI-SURFACE
COPPER OXIDES
GROUND-STATE
CUO2 PLANES
SPECTRUM
BAND
NMR
Ключевые слова (''Своб.индексиров.''): antibonding--bi-layer--bilayer cuprates--complex sequences--cuprates--doping levels--external magnetic field--field magnitude--hartree-fock approximations--high magnetic fields--lifshitz transition--main effect--orbitals--perturbation theory--quantum phase transitions--quantum transitions--single-layer structure--theoretical study--unit cells--carrier concentration--copper compounds--density functional theory--electronic properties--electronic structure--hartree approximation--magnetic fields--perturbation techniques--phase transitions--surface structure--quantum theory
Аннотация: We present a theoretical study of the electronic structure of bilayer HTSC cuprates and its evolution under doping and in a high magnetic field. Analysis is based on the t-t'-taEuro(3)-J* model in the generalized Hartree-Fock approximation. Possibility of tunneling between CuO2 layers is taken into account in the form of a nonzero integral of hopping between the orbitals of adjacent planes and is included in the scheme of the cluster form of perturbation theory. The main effect of the coupling between two CuO2 layers in a unit cell is the bilayer splitting manifested in the presence of antibonding and bonding bands formed by a combination of identical bands of the layers themselves. A change in the doping level induces reconstruction of the band structure and the Fermi surface, which gives rise to a number of quantum phase transitions. A high external magnetic field leads to a fundamentally different form of electronic structure. Quantum phase transitions in the field are observed not only under doping, but also upon a variation of the field magnitude. Because of tunneling between the layers, quantum transitions are also split; as a result, a more complex sequence of the Lifshitz transitions than in single-layer structures is observed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ritter C., Vorotynov A. M., Pankrats A. I., Petrakovskii G. A., Temerov V. L., Gudim, I. A., Szymczak R.
Заглавие : Magnetic structure in iron borates RFe3(BO3)(4) (R = Er, Pr): a neutron diffraction and magnetization study
Коллективы :
Разночтения заглавия :авие SCOPUS: Magnetic structure in iron borates RFe3(BO3) 4 (R = Er, Pr): A neutron diffraction and magnetization study
Место публикации : J. Phys.: Condens. Matter: IOP PUBLISHING LTD, 2010. - Vol. 22, Is. 20. - Ст.206002. - ISSN 0953-8984, DOI 10.1088/0953-8984/22/20/206002
Примечания : Cited References: 22. - This work was supported by RFBR, grant no. 10-02-00765, and by the Physical Sciences Department of RAS, project no. 1.1.1.1.
Предметные рубрики: GDFE3(BO3)(4)
DYFE3(BO3)(4)
CRYSTAL
Ключевые слова (''Своб.индексиров.''): antiferromagnetics--crystallographic structure--iron borate--low temperatures--magnetic ordering--magnetic propagation--magnetization measurements--rare-earth sublattices--space groups--spin reorientation--sub-lattices--temperature range--unit cells--anisotropy--antiferromagnetic materials--antiferromagnetism--erbium--erbium compounds--magnetic devices--magnetic properties--magnetic structure--magnetization--neutron diffraction--rare earths--single crystals--crystallography
Аннотация: Neutron diffraction, susceptibility and magnetization measurements (for R = Er only) were performed on iron borates RFe3(BO3)(4) (R = Pr, Er) to investigate details of the crystallographic structure, the low temperature magnetic structures and transitions and to study the role of the rare earth anisotropy. PrFe3(BO3)(4), which crystallizes in the spacegroup R32, becomes antiferromagnetic at T-N = 32 K, with t = [0 0 3/2], while ErFe3(BO3)(4), which keeps the P3(1)21 symmetry over the whole studied temperature range 1.5 K T 520 K, becomes antiferromagnetic below T-N
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Parshin A. M., Gunyakov V. A., Zyryanov V. Y., Shabanov V. F.
Заглавие : Magnetic-field-assisted formation of alignment polymer coatings in liquid crystal cells
Место публикации : Tech. Phys. Lett.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2008. - Vol. 34, Is. 7. - P571-573. - ISSN 1063-7850, DOI 10.1134/S1063785008070109
Примечания : Cited References: 8
Предметные рубрики: FRANK CONSTANTS
Аннотация: We describe a new method for obtaining liquid crystal (LC) layers with planar orientation in plane-parallel cells, which is based on the technology of LC-polymer interface formation in solution under the action of an applied magnetic field. The azimuthal anchoring energy of LC at the polymer surface has been determined by measuring the angle of orientation of the nematic LC director on the substrate surface as a function of the magnetic field. The LC orientation provided by the proposed method is stable, and the anisotropy of LC anchoring is comparable with that achieved using well-known methods of alignment polymer film preparation by rubbing.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gavriliuk A. G., Trojan I. A., Lyubutin I. S., Ovchinnikov S. G., Sarkissian V. A.
Заглавие : High-pressure magnetic properties and P-T phase diagram of iron borate
Место публикации : J. Exp. Theor. Phys.: AMER INST PHYSICS, 2005. - Vol. 100, Is. 4. - P688-696. - ISSN 1063-7761, DOI 10.1134/1.1926429
Примечания : Cited References: 24
Предметные рубрики: FEBO3 SINGLE-CRYSTALS
NUCLEAR-RESONANCE
BAND-STRUCTURE
TRANSITION
TEMPERATURE
SCATTERING
Ключевые слова (''Своб.индексиров.''): antiferromagnetic materials--diamonds--ferromagnetic materials--high pressure effects--low temperature effects--magnetic moments--magnetic properties--magnetization--phase diagrams--powders--single crystals--synchrotron radiation--diamond anvil cells--electronic transition--iron borate--nuclear forward scattering (nfs)--iron compounds
Аннотация: The high-pressure magnetic states of iron borate (FeBO3)-Fe-57 single-crystal and powder samples have been investigated in diamond anvil cells by nuclear forward scattering (NFS) of synchrotron radiation at different temperatures. In the low-pressure (0 < P < 46 GPa) antiferromagnetic phase, an increase of the Neel temperature from 350 to 595 K induced by pressure was found. At pressures 46-49 GPa, a transition from the antiferromagnetic to a new magnetic state with a weak magnetic moment (magnetic collapse) was discovered. It is attributed to the electronic transition in Fe3+ ions from the high-spin 3d(5) (S = 5/2, (6)A(1g)) to the low-spin (S = 1/2, T-2(2g)) state (spin crossover) due to the insulator-semiconductor-type transition with extensive suppression of strong d-d electron correlations. At low temperatures, NFS spectra of the high-pressure phase indicate magnetic correlations in the low-spin system with a magnetic ordering temperature of about 50 K. A tentative magnetic P-T phase diagram of FeBO3 is proposed. An important feature of this diagram is the presence of two triple points where magnetic and paramagnetic phases of the high-spin and low-spin states coexist. © 2005 Pleiades Publishing, Inc.
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