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Significance of Caucasian Sections for Working out Carbon-Isotope Standard for Upper Permian and Lower Triassic (Induan) and Their Correlation with the Permian of North-Eastern Russia

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Journal of China University of Geosciences 2005年第2期16卷 141-151页

作者： yuri D Zakharov Alexander S Biakov Aymon Baud Heinz Kozur Far Eastern Geological Institute Russian Academy of Sciences (Far Eastern Branch) Vladivostok 690022 Russia North-East Interdisciplinary Scientific Research InstituteRussian Academy of Sciences (Far Eastern Branch)Magadan 685000 RussiaMusee de GeologieBFSH2-UNI 1015 Lausanne Switzerland Rézsü u. 83H-1029 Budapest Hungary

Data obtained on conodont distribution in the Permian-Triassic Sovetashen Section of Transcaucasia provide further limitations on the age of the carbon-isotopic anomalies discovered by Baud et al. (1989). The significance of Caucasian sections for working out the carbon-isotope standard for the Upper Permian and Lower Triassic (Induan) is shown. Original data on carbon-isotope composition of bivalve and brachiopod shells from Permian sediments of North-Eastern Russia (Omolon and Okhotsk areas) have been obtained, which may be used for their correlation.

关键词： Armenia North-Eastern Russia Permian Triassic conodonts ammonoids bivalves brachiopods isotopic composition paleotemperatures correlation

High-Q resonant terahertz metasurfaces

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Opto-Electronic Advances 2024年第4期7卷 1-3页

作者： Manukumara Manjappa yuri Kivshar Department of Instrumentation and Applied Physics Indian Institute of ScienceBengaluru 560012India Nonlinear Physics Center Australian National UniversityCanberra ACT 2601Australia

In photonics, the quest for high-quality (high Q) resonances driven by the physics of bound states in the continuum (BIC)1,2has motivated researchers to explore innovative avenues for realizing groundbreaking applications in lasing3, sensing4and nonlinear photonics5. A conventional strategy to harness the properties of BICs involves breaking the symmetry of resonators in a uniform lattice, allowing uncoupled modes to interact with free space that opens a leaky channel in the form of socalled (quasi) q BIC6modes.

关键词： breaking resonant symmetry

A NUMERICAL METHOD FOR THE SIMULATION OF FREE SURFACE FLOWS OF VISCOPLASTIC FLUID IN 3D

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Journal of Computational Mathematics 2011年第6期29卷 605-622页

作者： Kirill D. Nikitin Maxim A. Olshanskii Kirill M. Terekhov yuri V. Vassilevski Institute of Numerical Mathematics Russian Academy of Sciences Moscow Russia Department of Mechanics and Mathematics Moscow State University Moscow Russia

In this paper we study a numerical method for the simulation of free surface flows of viscoplastic （Herschel-Bulkley） fluids. The approach is based on the level set method for capturing the free surface evolution and on locally refined and dynamically adapted octree cartesian staggered grids for the discretization of fluid and level set equations. A regu- larized model is applied to handle the non-differentiability of the constitutive relations. We consider an extension of the stable approximation of the Newtonian flow equations on staggered grid to approximate the viscoplastic model and level-set equations if the free boundary evolves and the mesh is dynamically refined or coarsened. The numerical method is first validated for a Newtonian case. In this case, the convergence of numerical solutions is observed towards experimental data when the mesh is refined. Further we compute several 3D viscoplastic Herschel-Bulkley fluid flows over incline planes for the dam-break problem. The qualitative comparison of numerical solutions is done versus experimental investigations. Another numerical example is given by computing the freely oscillating viscoplastic droplet, where the motion of fluid is driven by the surface tension forces. Altogether the considered techniques and algorithms （the level-set method, compact discretizations on dynamically adapted octree cartesian grids, regularization, and the surface tension forces approximation） result in efficient approach to modeling viscoplastic free-surface flows in possibly complex 3D geometries.

关键词： Free surface flows Viscoplastic fluid Adaptive mesh refinement Oetree meshes.

Effects of laying on of hands with and without a spiritual context on pain and functionality of older women with knee osteoarthritis:study protocol for a randomized controlled trial

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Journal of Integrative Medicine 2018年第2期16卷 106-112页

作者： Katy Andrade Monteiro Zacaron Nélia da Silva Mendes yuri Cotta e Silva Giancarlo Lucchetti School of Medicine Federal University of Juiz de ForaJuiz de Fora 36036-330Brazil Institute of Life Sciences Department of PhysiotherapyFederal University of Juiz de ForaGovernador Valadares 35012-140Brazil Faculty of Physical Therapy Federal University of Juiz de ForaJuiz de Fora 36036-330Brazil

Background： Laying on of hands （LooH） is a culturally-accepted therapy in several traditions. In Brazil, ＂Spiritism＂（third-largest religious tradition in number of followers） uses LooH with the name of ＂Spiritist Passe＂（SP）. However, there are few studies assessing SP＇s role in medical outcomes. The present study aims to investigate the effects of LooH, with and without a spiritual context, on pain, joint stiffness, and functional capacity of older women （≥60 years old） with knee osteoarthritis （KOA）. Methods/design： In this triple-blind, prospective randomized controlled trial, older women with KOA are assigned to three groups： LooH with a spiritual context group, LooH group without a spiritual context, and a control group receiving no intervention. Patients are assessed by a blinded researcher at baseline, 8 weeks, and 16 weeks. Pain, joint stiffness, and functional capacity are assessed using Western Ontario and McMaster Universities Osteoarthritis Index. Other measures such as anxiety, depression, gait speed, and quality of life will also be assessed. To detect differences between groups, a post-intervention com- parison between the three groups and a mean change （post-pre） comparison among the three groups will be done using analysis of variance. All statistical analyses will be performed using an intention-to-treat approach and a per-protocol analysis. Discussion： A pragmatic design using SP, LooH without spiritual context, and no LooH may provide further scientific evidence on SP＇s feasibility and efficacy for KOA patients.

关键词： Complementary therapies Spiritual therapies Therapeutic touch Spiritual healing Holistic therapies Knee osteoarthritis

Dielectric Mie voids: confining light in air

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Light(Science & Applications) 2023年第2期12卷 156-167页

作者： Mario Hentsche Kirll Koshelev Florian Sterl Steffen Botho Julian Karst Lida Shamsafar Thomas Weiss yuri Kivshar Harald Giessen 4th Physics Institute and Research Center SCoPE University of StuttgartPfaffenwaldring 5770569 StuttgartGermany Nonlinear Physics Centre Research School of PhysicsAustralian National UniversityCanberraACT 2601Australia institute of Physics University of Grazand NAWI GrazUniversitatsplatz 58010 GrazAustria

Manipulating light on the nanoscale has become a central challenge in metadevices,resonant surfaces,nanoscale optical sensors,and many more,and it is largely based on resonant light confinement in dispersive and lossy metals and ***,we experimentally implement a novel strategy for dielectric nanophotonics:Resonant subwavelength localized confinement of light in *** demonstrate that voids created in high-index dielectric host materials support localized resonant modes with exceptional optical *** to the confinement in air,the modes do not suffer from the loss and dispersion of the dielectric host *** experimentally realize these resonant Mie voids by focused ion beam milling into bulk silicon wafers and experimentally demonstrate resonant light confinement down to the UV spectral range at 265 nm(4.68 eV).Furthermore,we utilize the bright,intense,and naturalistic colours for nanoscale colour *** voids will thus push the operation of functional high-index metasurfaces into the blue and UV spectral *** combination of resonant dielectric Mie voids with dielectric nanoparticles will more than double the parameter space for the future design of metasurfaces and other micro-and nanoscale optical *** particular,this extension will enable novel antenna and structure designs which benefit from the full access to the modal field inside the void as well as the nearly free choice of the high-index material for novel sensing and active manipulation strategies.

关键词： dielectric utilize exceptional

Streptococcus mutans activates the AIM2, NLRP3 and NLRC4 inflammasomes in human THP-1 macrophages

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International Journal of Oral Science 2018年第3期10卷 190-196页

作者： yuri Song Hee Sam Na Eunjoo Park Mi Hee Park Hyun Ah Lee Jin Chung Department of Oral Microbiology School of Dentistry Pusan National University Institute of Translational Dental Sciences Pusan National University

Streptococcus mutans(S. mutans), a major aetiologic agent of dental caries, is involved in systemic diseases, such as bacterial endocarditis, if it enters the bloodstream through temporary bacteraemia. Interleukin(IL)-1β, a proinflammatory cytokine, is related to the host defences against pathogens, and its synthesis, maturation, and secretion are tightly regulated by the activation of the inflammasome, an inflammatory signalling complex. This study examined the signalling mechanism of IL-1β secretion and the inflammasome pathway induced by S. mutans to explain the molecular mechanism through which systemic infection by oral streptococci can occur. After infection of THP-1 cells with S. mutans, the expression of inflammasome components was detected using various methods. S. mutans induced IL-1β secretion via caspase-1 activation, and S. mutans-induced IL-1β secretion required absent in melanoma(AIM2), NLR family pyrin domain-containing 3(NLRP3) and NLR family CARD domain-containing 4(NLRC4)inflammasome activation. In particular, the S. mutans-induced NLRP3 inflammasome was mediated by adenosine triphosphate(ATP) release, potassium depletion and lysosomal damage. Our study provides novel insight into the innate immune response against S. mutans infection.

关键词： NLRP3 and NLRC4 inflammasomes in human THP-1 macrophages THP Streptococcus mutans activates the AIM2 AIM

New Findings of Latest Early Olenekian(Early Triassic)Fossils in South Primorye,Russian Far East,and Their Stratigraphical Significance

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Journal of Earth Science 2021年第3期32卷 554-572页

作者： yuri D.Zakharov Liana G.Bondarenko Alexander M.Popov Olga P.Smyshlyaeva Far Eastern Geological Institute Far Eastern BranchRussian Academy of SciencesVladivostok 690022Russia

Information on latest early Olenekian(latest Smithian)ammonoids is available apparently from only seven regions of the world,including South *** Smithian evidences on this topic are recorded from the West SMID(abbreviation from the Russian name of the quarry:"Building Materials and Details"),East SMID and Golyj Cape areas in South *** provides additional information on systematic composition of latest Smithian ammonoid,as well as conodont and brachiopod assemblages from the recently identified Shimanskyites shimanskyi Zone,located between lower Olenekian Anasibirites nevolini Zone and upper Olenekian Tirolites subcassianus *** are many common ammonoid species in the Shimanskyites shimanskyi Zone and the underlying Anasibirites nevolini Zone,e.g.,Prosphingitoides sp.,Arctoceras septentrionale(Diener),Churkites syskoi Zakharov et Shigeta,Submeekoceras?subhhydaspis(Kiparisova),Prionites markevichi Zakharov et Smyshlyaeva,?Anasibirites?simanenkoi Zakharov et Smyshlyaeva,Xenoceltites?subvariocostatus Zakharov et Smyshlyaeva,and Mianwaliites zimini Zakharov et *** base of the Shimanskyites shimanskyi Zone,marked by a negativeδ13Corg excursion in the Kamenushka-2 Section by our previous study,coincides with the FO(first occurrence)of ammonoids Shimanskyites shimanskyi Zakharov et Smyshlyaeva and Glyptophiceras ***(Waagen)and conodont Hindeodella budurovi *** zone is characterized additionally by some fossils common for the overlying upper Olenekian Tirolites subcassianus Zone:ammonoids of the genus Kamenushkaites,brachiopods Bittnerihyris margaritovi(Bittner)and Lepismatina *** conodont?Neogondolella?(=?Borinella)jubata *** latest Smithian ammonoids recorded from the Shimanskyites shimanskyi Zone totally consist of 30 taxa belonging to 11 families(Sageceratidae,Ussuiriidae,Aspenitidae,Paranannitidae,Arctoceratidae,Proptychitidae,?Galfetitidae,Prionitidae,?Kashmiritidae,Xenoceltitidae and Palaeophyllitidae).Th

关键词： ammonoids conodonts brachiopods biostratigraphy Smithian Russia

Formation of Diffusion Pairs as an Initial Stage in the Process of Decomposition of Alloys

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Advances in Materials Physics and Chemistry 2020年第12期10卷 328-338页

作者： yuri Ustinovshikov Udmurt Federal Research Center Russian Academy of Sciences Izhevsk Russia

The paper discusses the researches that formed the basis of the study of the transition of “ordering-phase separation” and the reasons for such transition occurrence. Experimental results have presented what diffusion pairs are and how they occur in binary and multicomponent alloys. The paper illustrates that the chemical bonds between atoms are realized on the principle of pair interaction in both solid and liquid states of the alloy. The process of separating a multi-component ABC alloy into diffusion pairs A/B, A/C, and B/C occurs in a liquid solution, where the diffusion mobility of atoms is very high, and the resistance of the environment is relatively low. The driving force of such a process is the chemical attraction between like and unlike atoms, that is, the tendency to phase separation and the tendency to ordering. Quenching the liquid alloy into the water fixes a microstructure consisting of microscopic areas corresponding in composition to one or another diffusion pairs. The paper shows what exactly should be done so that such a branch of science as Materials Science could get rid of the empirical approach when creating new alloys.

关键词： Ordering-Phase Separation Transition Ionic Bond ↔ Covalent Bond Pair Interaction Diffusion Pairs Transmission Electron Microscopy Superalloys

Nucleation of New Phases in Alloy: A Long Way to True

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Advances in Materials Physics and Chemistry 2022年第10期12卷 240-259页

作者： yuri Ustinovshikov Udmurt Federal Research Center of Russian Academy of Sciences Izhevsk Russia

The article presents our generalization of electron microscopy results that got for binary and some ternary alloys based on Ni. These results are considered as the basis for the conclusion that chemical bonds between atoms are realized in binary alloys according to the principle of pair-wise chemical interaction. In ternary alloys, such a process begins with the separation of the liquid alloy into diffusion micro-pairs, inside which particles of a new phase are subsequently formed. The latter circumstance allows us to consider the liquid state of the alloy as the initial stage of the formation of a new phase. That formation of diffusion micro-pairs (and particles of a new phase inside them) occurs because of the presence of alloys, along with a metallic bond, of the ionic and covalent components of a strong chemical bond, which exist at all temperatures of the condensed state. The article shows what exactly needs to be done so that such a branch of science as the science of alloys can get rid of the empirical approach when creating new alloys.

关键词： Alloys Microstructure Electronic Structure Phase Transformation Transmission Electron Microscopy