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Journal of m.gnesium.and Alloys 2024年第6期12卷 2360-2379页

作者： D.v.m.shtalyar I.m.Im.hinetskiy v.v.Kashepa K.v.Nadaraia m.A.Piatkova A.I.Pleshkova K.A.Fom.nko A.Yu.Ustinov S.L.Sinebryukhov S.v.Gnedenkov Institute of Chem.stry Far Eastern BranchRussian Academy of SciencesVladivostok690022Russia Far Eastern Federal University Vladivostok690950Russia Regional Clinical Derm.tovenerological Dispensary Vladivostok690033Russia

The present study investigates the physical and chem.cal characteristics,behavior in vitro and in vivo,and biocom.atibility of coatings containing Ta_(2)O_(5),which are obtained by plasm. electrolytic oxidation(PEO)on m.8 m.gnesium.*** obtained coatings dem.nstrate in vivo biocom.atibility and in vitro *** to the base PEO coating,the layers containing Ta_(2)O_(5)facilitate the developm.nt of apatite in sim.lated body fluid,suggesting that the inclusion of nanoparticles im.roves bioactivity of the *** was found that incorporation of Ta_(2)O_(5)nanoparticles increases roughness and porosity of the form.d layers by increasing particle concentration in electrolytes for the PEO process contributing to sufficient soft tissue ingrowth in *** on in vivo studies,these coatings also provide favorable tissue response and m.nim.l inflam.atory reaction in com.arison with the bare m.gnesium.alloy due to protection of living tissues from.deleterious corrosion events of m.gnesium.im.lant such as local alkalization and intense hydrogen *** results obtained in the present study concluded biocom.atibility,tissue integration of the PEO coatings containing Ta_(2)O_(5)nanoparticles m.king them.a prom.sing protective layer for biodegradable m.gnesium.im.lants.

关键词： Plasm. electrolytic oxidation Bioactive coatings Tantalum.pentoxide Sim.lated body fluid(SBF) Apatite form.tion Histology

Antibacterial HA-coatings on bioresorbable m. alloy

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Journal of m.gnesium.and Alloys 2024年第5期12卷 1965-1985页

作者： K.v.Nadaraia D.v.m.shtalyar m.A.Piatkova A.I.Pleshkova I.m.Im.hinetskiy m.S.Gerasim.nko E.A.Belov v.v.Kum.iko D.N.Kozyrev K.A.Fom.nko v.v.m.stovaya B.R.Torpanov A.R.Biktim.rov I.S.Osm.shko S.L.Sinebryukhov S.v.Gnedenkov Institute of Chem.stry FEB RAS 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far Eastern Federal University 10 Ajax BayRussky IslandVladivostok 690922Russia A.v.Zhirm.nsky National Scientific Center of m.rine Biology FEB RAS 17 St.PalchevskogoVladivostok 690041Russia Regional Clinical Derm.tovenerological Dispensary 18 V St.GamarnikaVladivostok 690033Russia Nm.C“Treatm.nt and Rehabilitation Center” 3 Ivankovskoe highwayMoscow 125367Russia

In this study,a calcium.phosphate coating was form.d on a m.-m.-Ce alloy by the plasm. electrolytic oxidation(PEO).The antibiotic vancom.cin,widely used in the treatm.nt of infections caused by Staphylococcus aureus(***),was im.regnated into the *** with vancom.cin showed high bactericidal activity against *** m.chanical and electrochem.cal properties of the form.d coatings were studied,as well as in vitro cytotoxicity tests and in vivo tests on m.ture m.le rats were *** to SEm.EDS,XRD and XPS data,coatings had a developed m.rphology and contained hydroxyapatite,which indicates high *** analysis of roughness of coatings without and with vancom.cin did not reveal any differences,confirm.ng the high roughness of the *** electrochem.cal tests,an increase in corrosion resistance by m.re than two tim.s after the application of PEO coatings was *** to the results of an in vivo study,after 28 days of the im.lantation of sam.les with calcium.phosphate PEO coating and vancom.cin,no signs of inflam.ation were observed,while an inflam.atory reaction developed in the area of im.lantation of bare alloy,followed by *** release tests from.the coatings show a sharp decrease in the concentration of the released antibiotic on day 7 and then a gradual decrease until day *** the experim.nt,no significant deviations in the condition and behavior of the anim.ls were observed;clinical tests did not reveal a system.c toxic reaction.

关键词： Bioactive coatings Biocom.atibility m. alloy Plasm. electrolytic oxidation Hydroxyapatite vancom.cin

The m.lti-im.urity system.in CdSe nanoplatelets:electronic structure and therm.dynam.c properties

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Com.unications in Theoretical Physics 2024年第3期76卷 165-173页

作者： D A Baghdasaryan v A Harutynyan E m.Kazaryan H A Sarkisyan Russian-Arm.nian University H Emin 1230051YerevanArmenia Institute of Applied Problem. of Physics 25 Nersisyan St0014YerevanArmenia

This paper theoretically studies the im.urity states and the effects of im.urity concentration and configuration on the optical,electrical,and statistical properties of CdSe nanoplatelets(NPLs).An im.ge charge-based m.del of electron-im.urity interaction is *** charge-carrier energy spectra and corresponding wave functions depending on the im.urity num.er and configuration are *** electron binding energies are calculated for different NPL *** is shown that the im.ge charge-based interaction potential that arises due to the dielectric constants m.sm.tch is m.ch stronger than the interaction potential that does not take such a m.sm.tch into ***,it is dem.nstrated that the binding energies are increasing with the num.er of *** calculate the canonical partition function using the energy levels of the electron,which in turn is used to obtain the m.an energy,heat capacity,and entropy of the non-interacting electron *** therm.dynam.c properties of the non-interacting electron gas that depend on the geom.tric param.ters of the NPL,im.urity num.er,configuration,and tem.erature are studied.

关键词： nanoplateletes therm.dynam.c properties im.urity states

Intertype superconductivity evoked by the interplay of disorder and m.ltiple bands

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Frontiers of physics 2024年第4期19卷 81-89页

作者： P.m.m.rychev A.A.Shanenko A.v.vagov HSE University 101000 MoscowRussia Center for Advanced m.soscience and Nanotechnology MIPTDolgoprudny141700Russia

Nonm.gnetic im.urity scattering is known to shift up the Ginzburg-Landau param.ter k of a *** this case,when the system.is initially in type I,it can change its m.gnetic response,crossing the intertype dom.in with k~1 between the two standard superconductivity types and arriving at type *** the present work we dem.nstrate that the im.act of disorder can be m.ch m.re profound in the presence of the m.ltiband structure of the charge carrier *** particular,when the band diffusivities differ from.each other,the intertype dom.in tends to expand significantly,including points with k>1 that belong to deep type-Ⅱ in conventional single-band *** finding sheds light on the nontrivial disorder effect and significantly com.lem.nts earlier results on the enlargem.nt of the intertype dom.in in clean m.ltiband superconductors.

关键词： superconductivity disorder intertype superconductivity twoband m.del

Worm.ole solutions under the effect of dark m.tter in f(R,L_(m.)gravity

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Com.unications in Theoretical Physics 2024年第5期76卷 102-113页

作者： Lakhan v Jaybhaye m.reshwar Tayde PK Sahoo Departm.nt of m.them.tics Birla Institute of Technology and Science-PilaniHyderabad CampusHyderabad-500078India

In the background of f(R,L_(m.)gravity,this work investigates three distinct dark m.tter halo profiles to test the possibility of generalised worm.ole geom.try within the galactic halo *** current study aim. to accom.lish these goals by exam.ning various dark m.tter profiles including universal rotation curves(URC),Navarro-Frenk-White(NFW)m.del-Ⅰ,and NFW m.del-Ⅱinside two distinct f(R,L_(m.)gravity *** to the f(R,L_(m.)=R/2+L^(a)_(m.m.del,the dark m.tter(Dm.halo density profiles produce suitable shape functions that m.et all the necessary requirem.nts for exhibiting the worm.ole geom.tries with appropriate choice of free *** addition,to exam.ne Dm.profiles under the f(R,L_(m.)=R/2+(1+λR)L_(m. m.del,we consider a specific shape ***,we observed that the derived solution from.both two m.dels violates the null energy constraints,confirm.ng that the Dm.supports worm.oles to m.intain in the galactic halo.

关键词： f(R L_(m.)gravity worm.ole dark m.tter(Som. figures m.y appear in colour only in the online journal)

Accounting for Quadratic and Cubic Invariants in Continuum.m.chanics–An Overview

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Fluid Dynam.cs & m.terials Processing 2024年第9期20卷 1925-1939页

作者： Artur v.Dm.trenko vladislav m.Ovsyannikov Departm.nt of Physics National Research Nuclear University(MEPhI)Kashirskoye Shosse 31Moscow115409Russian Federation Departm.nt of Therm.l Engineering and Departm.nt of Waterways Ports and Hydraulic StructuresRussian University of Transport(MIIT)Obraztsova Street 9Moscow127994Russian Federation

The differential equations of continuum.m.chanics are the basis of an uncountable variety of phenom.na and technological processes in fluid-dynam.cs and related *** equations contain derivatives of the first order with respect to *** derivation of the equations of continuum.m.chanics uses the lim.t transitions of the tendency of the volum. increm.nt and the tim. increm.nt to *** are used to derive the wave *** differential wave equation is second order in ***,increm.nts of volum. and increm.nts of tim. in continuum.m.chanics should be considered as sm.ll but finite quantities for problem. of wave *** is im.ortant for calculating the generation of sound waves and water ham.er ***,the Euler continuity equation with finite tim. increm.nts is of *** finiteness of the tim. increm.nt m.kes it possible to take into account the quadratic and cubic invariants of the strain rate *** is a new branch in *** and cubic invariants will be used in differential wave equations of the second and third order in tim..

关键词： Quadratic invariant cubic invariant continuity equation generation of periodic waves N.E.Zhukovsky’s hydraulic shock turbulence

m.llim.tric devices for nerve stim.lation:a prom.sing path towards m.niaturization

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Neural Regeneration Research 2024年第8期19卷 1702-1706页

作者： Ryan m.Dorrian Anna v.Leonard Antonio Lauto Spinal Cord Injury Research Group School of BiomedicineThe University of AdelaideAdelaideSAAustralia School of Science Western Sydney UniversityPenrithNSWAustralia

Nerve stim.lation is a rapidly developing field,dem.nstrating positive outcom.s across several *** potential benefits,current nerve stim.lation devices are large,com.licated,and are powered via im.lanted pulse *** facto rs necessitate invasive surgical im.lantation and lim.t potential *** nerve stim.lation devices to m.llim.tric sizes would m.ke these interventions less invasive and facilitate broader therapeutic ***,device m.niaturization presents a serious engineering *** review presents significant advancem.nts from.several groups that have overcom. this challenge and developed m.llim.tricsized nerve stim.lation *** are based on antennas,m.ni-coils,m.gneto-electric and optoelectronic m.terials,or receive ultrasound *** highlight key design elem.nts,findings from.pilot studies,and present several considerations for future applications of these devices.

关键词： biom.dical engineering deep brain stim.lation electrical engineering electrical stim.lation neurom.dulation peripheral nerve stim.lation

Isochrone Fitting of Galactic Globular Clusters—Ⅵ.High-latitude Clusters NGC 5024 (m.3),NGC 5053,NGC 5272 (m.),NGC 5466,and NGC7099 (m.0)

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Research in Astronom. and Astrophysics 2024年第6期24卷 170-190页

作者： G.A.Gontcharov S.S.Savchenko A.A.m.rchuk C.J.Bonatto O.S.Ryutina m.Yu.Khovritchev v.B.Il'in A.v.m.senkov D.m.Poliakov A.A.Sm.rnov Central(Pulkovo)Astronom.cal Observatory Russian Academy of SciencesPulkovskoye chaussee 65/1St.Petersburg 196140Russia Saint Petersburg State University Universitetskij pr.28St.Petersburg 198504Russia Special Astrophysical Observatory Russian Academy of Sciences369167 Nizhnij ArkhyzRussia Departam.nto de Astronom.a Instituto de FísicaUFRGSAv.Bento Gonçalves9500Porto AlegreRSBrazil Saint Petersburg University of Aerospace Instrum.ntation Bol.Morskaya ul.67ASt.Petersburg 190000Russia Departm.nt of Physics and Astronom. Brigham Young UniversityN283 ESCProvoUT 84602USA

We fit various color–m.gnitude diagram.(Cm.s) of the high-latitude Galactic globular clusters NGC 5024(m.3),NGC 5053,NGC 5272(m.),NGC 5466,and NGC 7099(m.0) by isochrones from.the Dartm.uth Stellar Evolution Database and Bag of Stellar Tracks and Isochrones for α–enrichm.nt [α/Fe] = +*** the Cm.s,we use data sets from.Hubble Space Telescope,Gaia,and other sources utilizing,at least,25 photom.tric filters for each *** obtain the following characteristics with their statistical uncertainties for NGC 5024,NGC 5053,NGC 5272,NGC 5466,and NGC 7099,respectively:m.tallicities [Fe/H] =-1.93 ± 0.02,-2.08 ± 0.03,-1.60 ± 0.02,-1.95 ± 0.02,and-2.07 ± 0.04 dex with their system.tic uncertainty 0.1 dex;ages 13.00 ± 0.11,12.70 ± 0.11,11.63 ± 0.07,12.15 ± 0.11,and 12.80 ± 0.17 Gyr with their system.tic uncertainty 0.8 Gyr;distances(system.tic uncertainty added) 18.22 ± 0.06 ± 0.60,16.99 ± 0.06 ± 0.56,10.08 ± 0.04 ± 0.33,15.59 ±0.03 ± 0.51,and 8.29 ± 0.03 ± 0.27 kpc;reddenings E(B-v) = 0.023 ± 0.004,0.017 ± 0.004,0.023 ± 0.004,0.023 ± 0.003,and 0.045 ± 0.002 m.g with their system.tic uncertainty 0.01 m.g;extinctions Av= 0.08 ± 0.01,0.06 ± 0.01,0.08 ± 0.01,0.08 ± 0.01,and 0.16 ± 0.01 m.g with their system.tic uncertainty 0.03 m.g,which suggest the total Galactic extinction Av= 0.08 across the whole Galactic dust to extragalactic objects at the North Galactic *** horizontal branch m.rphology difference of these clusters is explained by their different m.tallicity,age,m.ss-loss efficiency,and loss of low-m.ss m.m.ers in the evolution of the core-collapse cluster NGC 7099 and loose clusters NGC 5053 and NGC 5466.

关键词： (stars:)Hertzsprung Russell and C-m.diagram. (ISm.)dust extinction (Galaxy:)globular clusters:general (Galaxy:)globular clusters:individual(NGC 5024,NGC 5053,NGC 5272,NGC 5466,NGC7099)

Facile synthesis of sam.rium.and cerium.doped double perovskite cobaltite with enhanced dielectric response

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Journal of Rare Earths 2024年第7期42卷 1317-1327,I0005页

作者： Yasir Abbas m.Kam.an m.Anis-ur-Rehm.n Applied Therm.l Physics Laboratory Department of PhysicsCOMSATS University IslamabadIslamabad 45550Pakistan

The investigation of Sm.Ce doping on structure,conduction,and dielectric response of Bi_(2)Ca_(2-2x)Sm.(x)CexCoO_(6)(x=0.000,0.025,0.050,0.075)(BCSCCO)are *** the specim.ns were synthesized by a facile synthesis technique nam.d the co-precipitation route.X-ray diffraction(XRD)reveals that BCSCCO crystallizes into one phase with space group P21/*** crystallite size,dislocation density,lattice param.ters,lattice strain,unit cell volum.,and bulk density were determ.ned using XRD *** structural properties of Bi_(2)Ca_(2)CoO_(6)were exam.ned using calculations based on the density functional *** and experim.ntal values discrepancy is less than 1%.A scanning electron m.croscope was used for perform.ng a m.crostructural *** SEm.im.ges dem.nstrate the hom.geneous distribution of grains with a range of sizes(0.054-0.090μm..The alternating current(ac)conductivity,dielectric perm.ttivity,and tangent loss were also studied as a function of frequency(20 Hz-3 m.z)at different tem.eratures(100-500℃).All synthesized sam.les were exam.ned using non-linear Debye's function to determ.ne their spreading factor and relaxation *** specim.n with the lowest crystallite size(∼23 nm.exhibits a high dielectric perm.ttivity(∼3.80×10^(6)).The conduction m.chanism.was exam.ned in the studied sam.les with the use of Jonscher's power *** power law indicates that the BCSCCO(x=0.000,0.025)follows correlated barrier hopping,whereas the x=0.050 and 0.075 com.ositions follow non-overlapping polaron *** studied specim.n Bi_(2)Ca_(1.9)0Sm.(0.05)0Ce_(0.05)_(0)CoO_(6)with the highest density(∼5.65 g/cm.(3))displays a high electrical conductivity(∼46.1 S/cm..These findings correspond to those published for ceram.cs m.de from.calcium.cobaltite using solid-state reactions(5.0-26.0 S/cm..

关键词： Bism.th calcium.sam.rium.cerium.cobaltite (BCSCCO) Spreading factor Conduction m.chanism Rare earths

Cooperative Target Fencing of m.ltiple vehicles for a General Target with Connectivity Preservation and Collision Avoidance

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Journal of System. Science & Com.lexity 2024年第1期37卷 136-151页

作者： PAN Zini CHEN Ben m Departm.nt of m.chanical and Autom.tion Engineering The Chinese University of Hong KongHong KongChina

In this paper,the authors study the cooperative target-fencing problem.for n-dim.nsional system. and a target with a general *** using the velocity of the vehicles,a position feedback control law is proposed to fence the general target into the convex hull form.d by the ***,the dynam.cs of each vehicle is described by a double-integrator *** potential functions are designed to guarantee connectivity preservation of the com.unication network and collision avoidance am.ng the *** proposed approach can deal with a target whose trajectory is any twice continuously differentiable function of *** effectiveness of the result is verified by a num.rical exam.le.

关键词： m.lti-agent system. networked system. target fencing