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Journal of Innovative Optical Health Sciences 2013年第3期6卷 76-85页

作者： OXANA v.SEMYACHKINA-GLUSHKOvSKAYA vLADISLAv v.LYCHAGOv OLGA A.BIBIKOvA igor A.SEMYACHKIN-GLUSHKOvSKIY SERGEY S.SINDEEv EKATERINAM.ZINCHENKO MOHHANAD M.KASSIM AL-FATLE FATEMA ALI AL HASSANI LEITH MARIA v.ULANOvA vALERY v.TUCHIN Department of Biology Saratov State UniversityAstrachanskaya Str.83410012 SaratovRussian Federation Department of Biology Al-Mustansiriya UniversityBaghdadIraq Institute of Precise Mechanics and Control of Russia Academy of Science Rabochaya 28 410028 SaratovRussian Federation Optoelectronics and Measurement Techniques Laboratory University of Oulu P.O.BOX 450090014 University of OuluFinland

In experiments on newbom rats with stress related intracrani al hemorhage(ICH)using Doppler optical coberence tomognaphy(DOCT)we have shown that latent stage of ICH(4 h after stress)is characterized by decrease of venous blood outflow and the loss of sensitivity of sagittal vein to vasoconstrictor ffect of *** incidence of ICH(24 h after stress)was accompanied by progressi on of early pathological changes in cerebral venous blood flow(CvBF)and development of venous *** into consideration of this fact,we suggest that the suppression of CvBF related to the severity to the deleterious effect of stress on the brain hemodynamics in newborn *** facts allow us to conclude that the venous insufficiency with the loss of vasoconstrictor response to adrenaline is an informative and sensitive component of pattern of CvBF that can be important diagnostic criteria of risk of ICH development in newborns.

关键词： Doppler optical coherence tomography stress related intracnanial hemorthage cerebral venous blood flow adrenaline

Investigation of coupled cobalt-silver nanoparticle system by plan view TEM

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Progress in Natural Science:Materials International 2012年第3期22卷 186-192页

作者： Daniel Fox Ruggero verre Brendan J. O'Dowd Sunil K. Arora Colm C. Faulkner igor v. Shvets School of Physics and CRANN Trinity College Dublin CRANN Advanced Microscopy Laboratory Trinity College Dublin

We present a transmission electron microscopy (TEM) investigation of a coupled cobalt and silver nanoparticle system. A plan view in situ lift-out method for preparing samples for TEM using the focused ion beam (FIB) microscope was used. This technique is used to prepare high quality TEM samples with site specificity in a short time and with a high success rate. We demonstrate the ability of the plan view sample preparation technique to provide information about an ordered system of nanoparticles which could not be observed using standard FIB cross sectioning of the sample. High resolution TEM and energy dispersive X-ray spectroscopy mapping of both cross sectional and plan view samples are presented, clearly showing the significant benefit of plan view TEM analysis for certain samples.

关键词： Focused ion beam Transmission electron microscopy Lift-out Co Ag Nanoparticle

Wireless Infrared Pyrometer with Fiber Optic: Construction and Processing Algorithms

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Wireless Engineering and Technology 2014年第2期5卷 25-33页

作者： igor Ya. Orlov igor A. Nikiforov Alexander v. Afanasjev Lobachevsky State University of Nizhny Novgorod (National Research University) Nizhny Novgorod Russia

In this paper, developed wireless portable infrared pyrometer with dual channel fiber optic is described. The pyrometer measures surface temperature in wide infrared spectral range of 2 - 25 um. A data processing algo... 详细信息

关键词： Infrared Radiometer Infrared Pyrometer Infrared Fiber Optic Synchronous Detection Method Wireless Data Transmission Reference Oscillation Temperature Compensation Data Processing Algorithms

Study of cobalt ferrite nanosuspensions for low-frequency ferromagnetic hyperthermia

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Particuology 2008年第5期6卷 322-333页

作者： Bronislav E.Kashevsky vladimir E.Agabekov Sergei B.Kashevsky Katsiaryna A.Kekalo Elena Yu.Manina igor v.Prokhorov vladimir S.Ulashchik A.v.Luikov Heat and Mass Transfer Institute Belarus Academy of Sciences P.Brovka Str.15Minsk 220072Belarus Institute of Chemistry of New Materials Belarus Academy of SciencesSkoriny Str.36Minsk 220141Belarus Institute of Physiology Belarus Academy of SciencesAkademicheskaiy Str.28Minsk 220072Belarus

High-coercive cobalt ferrite nanoparticles were synthesized and studied for magnetic hyperthermia by direct injection of their suspension into a tumor and application of a strong audio-frequency magnetic field for heating. Physical （dynamic magnetic hysteresis and heat generation in both liquid and solid dispersions）, biological （toxicity and penetration of particles in therapeutic quantities into mouse tumor tissue） as well as other properties of the particles were studied. A model was developed to describe the magnetodynamics in suspensions of magnetic nanoclusters with an account for both Brownian and regular rotations, to provide understanding of observed phenomena. The experimental and theoretical techniques developed have formed a basis for controllable synthesis of the magnetic nanoparticles for low-frequency heat generation in medical and other applications.

关键词： Cobalt ferrite nanoparticles Magnetic suspensions Dynamic magnetic hysteresis Medical hyperthermia

Comprehensive investigation of structural,dielectric and local piezoelectric properties of KNN ceramics

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Journal of Advanced Dielectrics 2019年第2期9卷 33-44页

作者： Poonam Kumari Madan Lal Sunil Kumar Radheshyam Rai Anupinder Singh D.v.Karpinsky igor Bdikin Department of Physics ACBS Eternal UniversityBaru Sahib 173101 Himachal PradeshIndia Department of Physics Guru Nanak Dev University Amritsar 143005India Scientific-Practical Materials Research Centre of NAS of Belarus Minsk 220072 BelarusIndia National Research University of Electronic Technology“MIET”Zelenograd 124498 MoscowRussia TEMA-NRD Mechanical Engineering Department and Aveiro Institute of Nanotechnology(AIN)University of AveiroAveiro 3810-193Portugal

In this research paper,we utilized the traditional high-temperature solid-state reaction method to fabricate the K_(0.495)Na_(0.520)NbO_(3),K_(0.480)Na_(0.535)NbO_(3)and K_(0.475)Na_(0.540)NbO_(3)(abbreviated as KNN-1,KNN-2,and KNN-3,respectively)lead-free ion deficient ceramics for understanding the influence of ionic deficiency on the crystalline structure and dielectric/piezoelectric properties of the samples.X-ray diffraction patterns of these samples exhibited a perovskite tetragonal *** anomalies around 287℃and 471℃were identified as ferroelectric to ferroelectric and ferroelectric to paraelectric-transition temperatures for KNN-2 at 1 *** was found that the composition KNN-2 exhibit relatively high Curie temperature i.e.,471℃.The conductivity plots confirm that the activation energies are *** impedance behavior in our ceramic samples can be analyzed with the bulk/grain *** slope of Z′with temperature shows negative temperature coefficient of resistance(NTCR)type behavior in proposed KNN ceramics material.

关键词： KNN dielectric properties X-ray diffraction(XRD) NTCR PFM

Emerging 2D magnetic states in a graphene-based monolayer of EuC_(6)

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Nano Research 2022年第1期15卷 408-413页

作者： Ivan S.Sokolov Dmitry v.Averyanov Fabrice Wilhelm Andrei Rogalev Oleg E.Parfenov Alexander N.Taldenkov igor A.Karateev Andrey M.Tokmachev vyacheslav G.Storchak National Research Center“Kurchatov Institute” Kurchatov Sq.1Moscow 123182Russia ESRF-The European Synchrotron CS 4022038043 Grenoble Cedex 9France

Recent discoveries of intrinsic two-dimensional(2D)magnets open up vast opportunities to address fundamental problems in condensed matter physics,giving rise to applications from ultra-compact spintronics to quantum *** ever-growing material landscape of 2D magnets lacks,however,carbon-based systems,prominent in other areas of 2D *** measurements of the Eu/graphene compound-a monolayer of the EuC_(6) stoichiometry-reveal the emergence of 2D ferromagnetism but detailed studies of competing magnetic states are still ***,we employ element-selective X-ray absorption spectroscopy(XAS)and magnetic circular dichroism(XMCD)to establish the magnetic structure of monolayer *** system exhibits the anomalous Hall effect,negative magnetoresistance,and magnetization consistent with a ferromagnetic state but the saturation magnetic moment(about 2.5/%/Eu)is way too low for the half-filled f-shells of Eu^(2+)*** XAS/XMCD studies at the Eu L3 absorption edge probe the EuC6 magnetism in high fields and reveal the nature of the missing magnetic *** results are set against XMCD studies in Eu/silicene and Eu/germanene to establish monolayer EuC6 as a prominent member of the family of Eu-based 2D magnets combining the celebrated graphene properties with a strong magnetism of europium.

关键词： two-dimensional(2D)ferromagnetism graphene EuC_(6) X-ray magnetic circular dichroism(XMCD) monolayer

The Physics of the Phenomena of Electrical Induced Elements Separation in Solution of Salts in Liquid Polar Dielectric

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Open Journal of Physical Chemistry 2012年第1期2卷 67-72页

作者： Mishik A. Kazaryan igor v. Shamanin Tomsk Polytechnic University Tomsk Russia

In the work [1] is shown the possibility of the use the phenomena of the electrical-induced selective drift of cationic aquacomplexes in the water solution of the salts for creating of the new, non-electrode, power-saving technology of the solution enrichment by desired element. The development of the naturally-scientific basis of this technology has showed that inertial properties of formed in the solution over-molecular structural units—clusters depends from that’s dimensions. Dimensions of these clusters are in limits from scores of angstrom to fractions of micron, at the same time liquid mediums are the base of functioning both biological and technological systems. Thus, water solution of salt contains nanoparticles and biological and many technological systems are functioning with the assistance of nanoparticles. For example, the ordinary blood circulatory system or many of chemical processing. The casual or intentional action of aperiodic electric field on systems containing salts solutions produces some positive or negative effects. This work shows new approach for theoretical describing of salts solution in dielectric liquids and contains some data on the realized experiments.

关键词： Electromagnetic Field Solution Polar Liquid Dielectric Solvation Aqua Complex Solvated Ion Hydration Shell Over-Molecular Cluster Polarization Polarized Charge Directed Drift Separation Oscillations Own Frequencies

MAIN GEOLOGICAL EvENTS ON EASTERN MARGIN OF PALEOASIA CONTINENT IN JURASSIC

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MAIN GEOLOGICAL EVENTS ON EASTERN MARGIN OF PALEOASIA CONTIN...

Anticlockwise metamorphic paths at ca.890–790 Ma from the NE Baidrag block,Mongolia,indicate back-arc compression at the Rodinia periphery

侏罗系界限及地质事件国际学术研讨会

作者： igor v.Kemkin Far East Geological Institute Far Eastern Branch of Russian Academy of SciencesVladivostokprospect 100-letiya Vladivostoka159Russia

＜正＞Jurassic is important period in the geological evolution and formation of geological structure of East and Southeast Asia continental margin. During this time the different-age and different-facies formations of...

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Geoscience Frontiers 2023年第2期14卷 154-181页

作者： PavlaŠtípská vít Peresty igor Soejono Karel Schulmann RCAndrew Kylander-Clark Carmen Aguilar Stephen Collett Martin Racek Jitka Míková Otgonbaatar Dorjsuren Nikol Novotná Czech Geological Survey 11821 Praha 1Czech Republic Institute of Petrology and Structural Geology Charles University in PragueAlbertov 6Praha 212800Czech Republic Institut Terre et Environnement de Strasbourg UMR 7063 Universitéde Strasbourg-CNRS1 Rue Blessig67084 StrasbourgCedexFrance Department of Earth Science University of CaliforniaSanta BarbaraCA 93106United States Department of Mineralogy Petrology and Applied GeologyFaculty of Earth ScienceUniversity of Barcelona08028 BarcelonaSpain Institute of Geology Mongolian Academy of SciencesLabor Union StreetSonginokhairkhan DistrictUlaanbaatar 18080Mongolia

The processes leading to the assembly of the Rodinia supercontinent through Grenvillian collisional orogeny are relatively well *** contrast,accretionary orogenic processes occurring at the supercontinent periphery following Rodinia assembly are poorly *** fill this gap,we have identified metamorphic rocks in the Mongolia collage of the Central Asian Orogenic Belt,where numerous data testify for Meso-to Neoproterozoic magmatic *** tectono-metamorphic evolution of the periSiberian tract of the Central Asian Orogenic Belt is mainly characterized by the late Proterozoic–early Cambrian(Baikalian)***,we document here a Tonian age metamorphism at the northern part of the Precambrian Baidrag block,previously considered as a typical example of the Baikalian metamorphic *** study incorporates zircon and in-situ monazite geochronology linked to P-T modelling of Grt-Sil-Ky migmatite gneiss and Grt-St ***-Sil-Ky gneiss records initial burial to the sillimanite stability field at 720℃ and 6.0 kbar followed by further burial to the kyanite stability field at 750℃ and 9 kbar and decompression to 650℃ and 8 *** Grt-St schist records initial burial to the staurolite stability field at 620℃ and 6 kbar,followed by further burial to 590℃ and 8.5 *** monazite data yield a continuum of ^(207)Pb-corrected ^(238)U/^(206)Pb dates of ca.926–768 Ma in the Grt-Sil-Ky gneiss,and ca.937–754 Ma in the Grt-St *** on monazite textural positon,internal zoning,and REE patterns,the time of prograde burial to 6.0 kbar under a thermal gradient of 27–32℃/km is estimated at ca.890–853 *** is not clear whether such high-grade conditions prevailed until a phase of further burial under a geothermal gradient of 18–22℃/km dated at ca.835–815 *** late monazite recrystallization at ca.790 Ma is related to ***,monazite with dates of ca.568–515 Ma occur as whole grains or as rims with sharp boundaries on Tonian monaz

关键词： Central Asian Orogenic Belt Grenvillian-age metamorphism Monazite in-situ U-Pb dating Monazite REE composition Zircon U-Pb dating Thermodynamic modelling

Thermodynamic potential and phase diagram for multiferroic bismuth ferrite(BiFeO_(3))

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npj Computational Materials 2017年第1期3卷 284-293页

作者： Dmitry v.Karpinsky Eugene A.Eliseev Fei Xue Maxim v.Silibin Alexandra Franz Maya D.Glinchuk igor O.Troyanchuk Sergey A.Gavrilov venkatraman Gopalan Long-Qing Chen Anna N.Morozovska Scientific-Practical Materials Research Centre of NAS of Belarus P.Brovki str.19 Minsk 220072Belarus National Research University of Electronic Technology“MIET” Bld.1Shokin sq.ZelenogradMoscow 124498Russia Institute for Problems of Materials Science National Academy of Sciences of UkraineKrzhizhanovsky str.3 Kyiv 03680Ukraine Department of Materials Science and Engineering Pennsylvania State UniversityUniversity Park State CollegePA 16802USA Helmholtz Center Berlin Hahn-Meitner-Platz 1Berlin 14109Germany Institute of Physics National Academy of Sciences of Ukraine46pr.Nauky Kyiv 03028Ukraine

We construct a Landau-Ginzburg thermodynamic potential,and the corresponding phase diagram for pristine and slightly doped bismuth ferrite,a ferroelectric antiferromagnet at room *** potential is developed based on new X-ray and neutron diffraction experiments complementing available *** demonstrate that a strong biquadratic antiferrodistortive-type coupling is the key to a quantitative description of Bi_(1−x)La_(x)FeO_(3) multiferroic phase diagram including the temperature stability of the antiferromagnetic,ferroelectric,and antiferrodistortive phases,as well as for the prediction of novel intermediate structural ***,we show that“rotomagnetic”antiferrodistortive-antiferromagnetic coupling is very important to describe the ferroelectric polarization and antiferrodistortive tilt behavior in the R3c phase of BiFeO_(3).The Landau-Ginzburg thermodynamic potential is able to describe the sequence of serial and trigger-type phase transitions,the temperature-dependent behavior of the order parameters,and the corresponding susceptibilities to external *** can also be employed to predict the corresponding ferroelectric and antiferrodistortive properties of Bi_(1−x)La_(x)FeO_(3) thin films and nanoparticles by incorporating the gradient and surface energy terms that are strongly dependent on the shape,size,and preparation method.

关键词： ferrite ferroelectric diagram