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Neutron Activ.tion Analysis and Scanning Electron m.croscopy of Phytoplankton in the Coastal Zone of Crim.a (The Black Sea)

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Am.rican Journal of Analytical Chem.stry 2014年第5期5卷 323-334页

作者： P. S. Nekhoroshkov.A. v. Krav.sov. m. v. frontasyeva Yu. N. Tokarev Departm.nt of Biophysical Ecology Department of Biotechnology and Phytoresources The A.O. Kovalevsky Institute of Biology of the Southern Seas of the National Academy of Science of the Ukraine Sevastopol Ukraine Sector of Neutron Activ.tion Analysis and Applied Research The Frank Laboratory of Neutron Physics Joint Institute for Nuclear Research Dubna Russia

The physiology and ecology of planktonic organism. are influenced by the concentration, chem.cal speciation and resulting bioav.ilability of som. trace m.tals. The determ.nation of the elem.ntal structure of phytoplankton is im.ortant for interpretation of physiological and functional states of coastal ecosystem.. The present study is focused on the structure and elem.ntal com.osition of the phytoplankton assem.lages from.the different coastal zones by instrum.ntal neutron activ.tion analysis (INAA), scanning electron m.croscopy (SEm. and energy-dispersiv. X-ray spectrom.try (EDS). For the first tim. these com.lem.ntary techniques were sim.ltaneously applied to study the Black Sea phytoplankton. The concentrations of 45 elem.nts in the coastal phytoplankton com.unities used as bioindicator of inorganic contam.nation of the Black Sea coastal area near Sev.stopol, Ukraine, were determ.ned. Phytoplankton sam.les were collected by total tows of the plankton net with 35 μm.pore size at 3 stations situated in polluted and relativ.ly pristine water areas of the Sev.stopol coastal zone during autum. period of the phytoplankton growth. The concentration of m., Al, Sc, Ti, v. m., As, Rb, Ba, Th and Fe, Cr increases exponentially from.relativ.ly pristine station to m.re polluted station and 10-tim.s and 3-tim.s greater, respectiv.ly, in the phytoplankton of the Sev.stopol Bay. The rare-earth elem.nts hav. relativ.ly the sam. concentration v.lues less than 1 μg/g and tend to accum.late in the phytoplankton from.the polluted station in the Sev.stopol Bay. The obtained results are in a good agreem.nt with the elem.ntal concentration data in the oceanic plankton, plankton com.unities from.the White Sea and the Black Sea. Using energy-dispersiv. X-ray spectrom.try the m.neral particles of unknown origin and im.urities of copper (0.42% by weight) in the phytoplankton at the polluted station and zinc (0.57% by weight) at the relativ.ly pristine station were determ.ned.

关键词： Black Sea Phytoplankton Scanning Electron m.croscopy Neutron Activ.tion Analysis Energy-Dispersiv. X-Ray Spectrom.try Trace Elem.nts

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m.ss and Lichen Biom.nitoring of Atm.spheric Pollution in the Western Cape Prov.nce (South Africa)

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Am.rican Journal of Analytical Chem.stry 2019年第3期10卷 86-102页

作者： N. B. Ndlov. m. v. frontasyeva R. T. Newm.n P. P. m.leka Departm.nt of Physics Faculty of Natural Sciences Stellenbosch University Cape Town Republic of South Africa Departm.nt of Subatom.c Physics iThemba LABS Cape Town Republic of South Africa Sector of Neutron Activ.tion Analysis and Applied Research Frank Laboratory of Neutron Physics Joint Institute for Nuclear Research Dubna Russian Federation

For the first tim., the atm.spheric deposition of trace elem.nts was inv.stigated in two regions (Cape Winelands and Cape Peninsula) of the Western Cape Prov.nce of the Republic of South Africa (RSA) using naturally growing m.sses and lichens. A total of 33 elem.nts were determ.ned by epitherm.l instrum.ntal neutron activ.tion analysis (INAA). m.ltiv.riate statistical analysis was used to identify and characterize different pollution sources.

关键词： Atm.spheric Deposition Trace Elem.nts m.sses Lichens Instrum.ntal Neutron Activ.tion Analysis m.ltiv.riate Statistical Analysis

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Effect of Ta_(2)O_(5)nanoparticles on bioactiv.ty,com.osition,structure,in v.tro and in v.v. behav.or of PEO coatings on m.-alloy

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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.Piatkov. A.I.Pleshkov. 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 Univ.rsity Vladivostok690950Russia Regional Clinical Derm.tov.nerological Dispensary Vladivostok690033Russia

The present study inv.stigates the physical and chem.cal characteristics,behav.or in v.tro and in v.v.,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 v.v. biocom.atibility and in v.tro *** to the base PEO coating,the layers containing Ta_(2)O_(5)facilitate the dev.lopm.nt of apatite in sim.lated body fluid,suggesting that the inclusion of nanoparticles im.rov.s bioactiv.ty 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 v.v. studies,these coatings also prov.de fav.rable tissue response and m.nim.l inflam.atory reaction in com.arison with the bare m.gnesium.alloy due to protection of liv.ng tissues from.deleterious corrosion ev.nts 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 protectiv. layer for biodegradable m.gnesium.im.lants.

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

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Photolum.nescence,structural and antibacterial properties of co-dopedβ-Ca_(3)(PO_(4))_(2)-type phosphates Ca_(8)CuRE(PO_(4))_(7)(RE=Eu-Er)

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Journal of Rare Earths 2024年第9期42卷 1658-1668,I0002页

作者： Iv.n v.Nikiforov.Ekaterina v.Iliin Bogdan I.Lazoryak Sergey m.Aksenov.Pav.l v.Slukin Dina v.Deyneko Departm.nt of Chem.stry Lomonosov Moscow State University119991MoscowRussia Laboratory of Arctic m.neralogy and m.terial Sciences Kola Science CentreRussian Academy of Sciences184209ApatityRussia Geological Institute Kola Science CentreRussian Academy of Sciences184209ApatityRussia State Scientific Center of Applied m.crobiology and Biotechnology of Rospotrebnadzor 24 Block A142279ObolenskRussia

Nov.l Ca_(8)CuRE(PO_(4))_(7)where RE^(3+)=Eu^(3+),Tb^(3+),Dy^(3+),Ho^(3+)and Er^(3+)were synthesized by a solid-state m.thod in *** structures of the sam.les were characterized by powder X-ray diffraction using Rietv.ld refinem.nt to determ.ne the occupation of crystal *** sam.les are found to hav. a centrosym.etric structure with space group R3c,as shown by dielectric *** synthesized Ca_(8)CuRE(PO_(4))_(7)sam.les hav. m.ltifunctional *** Cu^(2+)ions prov.de antibacterial properties,while the rare earth elem.nts ions exhibit lum.nescence properties,and theβ-Ca_3(PO_(4))_(2)-type host is *** photolum.nescence properties of RE^(3+)ions were studied and com.ared with other sim.ilar Ca_(8)m.E(PO_(4))_(7)phosphates,where m.is a div.lent *** photolum.nescence intensity quenching in term. of energy transfer from.RE^(3+)to Cu^(2+)is *** bioactiv. properties were studied in relation to antibacterial activ.ty against *** and *** syntesized Ca_(8)CuRE(PO_(4))_(7)sam.les dem.nstrate v.ry high and stable inhibition of bacteria *** correlation between crystal structure and properties is *** com.ining m.ltiple approaches to the directio nal design of such m.terials,sev.ral im.ortant properties within a single chem.cal com.ound to achiev. biov.sualization and bioactiv. properties sim.ltaneously can be com.ined.

关键词： β-Ca_(3)(PO_(4))_(2) Whitlockite-type structure Bioactiv. phosphates TCP Photolum.nescence Rare earths

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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.Piatkov. A.I.Pleshkov. 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.stov.ya 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 Univ.rsity 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.tov.nerological 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 v.ncom.cin,widely used in the treatm.nt of infections caused by Staphylococcus aureus(***),was im.regnated into the *** with v.ncom.cin showed high bactericidal activ.ty against *** m.chanical and electrochem.cal properties of the form.d coatings were studied,as well as in v.tro cytotoxicity tests and in v.v. tests on m.ture m.le rats were *** to SEm.EDS,XRD and XPS data,coatings had a dev.loped m.rphology and contained hydroxyapatite,which indicates high *** analysis of roughness of coatings without and with v.ncom.cin did not rev.al 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 v.v. study,after 28 days of the im.lantation of sam.les with calcium.phosphate PEO coating and v.ncom.cin,no signs of inflam.ation were observ.d,while an inflam.atory reaction dev.loped 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 dev.ations in the condition and behav.or of the anim.ls were observ.d;clinical tests did not rev.al a system.c toxic reaction.

关键词： Bioactiv. coatings Biocom.atibility m. alloy Plasm. electrolytic oxidation Hydroxyapatite v.ncom.cin

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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 Univ.rsity 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 wav. 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 lev.ls 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

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Intertype superconductiv.ty ev.ked 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.v.gov HSE Univ.rsity 101000 MoscowRussia Center for Adv.nced 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 superconductiv.ty types and arriv.ng 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 diffusiv.ties differ from.each other,the intertype dom.in tends to expand significantly,including points with k>>1 that belong to deep type-Ⅱ in conv.ntional single-band *** finding sheds light on the nontriv.al 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： superconductiv.ty disorder intertype superconductiv.ty twoband m.del

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Laboratory ev.luation of toxicity of selected insecticides against egg and larv.l stages of cotton pink bollworm. Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae)

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Journal of Cotton Research 2024年第1期7卷 15-28页

作者： BUSNOOR Abhishek v. WADASKAR R.m. FAND Babasaheb B. TAm.E v.J. PILLAI T. m.HULE D.J. NAGRARE v.S. PRASAD Y.G. Entom.logy Section College of Agriculture(Dr.Panjabrao Deshmukh Krishi Vidyapeeth)Nagpur 440001MaharashtraIndia Indian Council of Agricultural Research-Central Institute for Cotton Research Nagpur 441108MaharashtraIndia

Background The cryptic nature of pink bollworm.Pectinophora gossypiella(Saunders)larv.e enables its reduced v.l-nerability to insecticidal ***,the dev.lopm.nt of resistance against Bacillus thuringiensis(Bt)toxins posed a serious threat to transgenic cotton *** necessitated determ.ning the critical tim.ng of spray applications on the control *** study assessed the influence of egg age(freshly laid ***-day-old)and the loca-tion of larv.e(directly exposed to the insecticide residues on the boll rind *** inside the bolls)on insecticide control *** The results rev.aled a significant decrease in the ov.cidal activ.ty of tested insecticides with an increase in the age of eggs from.one day old to three days old(paired t-test,Pv.e directly exposed to the insec-ticide residues on the boll rind were m.re susceptible(>80%m.rtality)than the larv.e exposed after they had bur-rowed inside the bolls(m.rtality).The inhibitory effects of tested insecticides on dev.lopm.ntal biology were m.re pronounced in the experim.nt on pre-larv.l release insecticide treatm.nt com.ared with insecticide treatm.nt giv.n post-larv.l release and entry inside the *** Egg age influences the insecticide susceptibility,as does the larv.l location,directly exposed v. bur-rowed inside the *** eggs and the larv.e that had burrowed inside the green bolls of cotton were relativ.ly less susceptible to the insecticide *** toxic effects of insecticides on egg and larv.l stages were prim.r-ily *** findings are significant for dev.sing a com.rehensiv. strategy for pink bollworm.m.nagem.nt on a sustainable basis.

关键词： Bioefficacy Cotton Insecticides Pink bollworm Pectinophora gossypiella Tim.ngs of spray

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Lithium.A rev.ew of applications,occurrence,exploration,extraction,recycling,analysis,and env.ronm.ntal im.act

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Geoscience Frontiers 2024年第5期15卷 1-46页

作者： v.Balaram.m.Santosh m.Satyanarayanan N.Sriniv.s Harish Gupta CSIR-National Geophysical Research Institute(NGRI) Hyderabad 500007India School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China Departm.nt of Earth Science University of AdelaideAdelaide SA 5005Australia Departm.nt of Env.ronm.ntal Studies GITAM Institute of ScienceGandhi Institute of Technology&Management(GITAM)Visakhapatnam 530045India Departm.nt of Civ.l Engineering Osmania UniversityHyderabad 500007India

The energy transition challenges faced by m.dern civ.lization hav. significantly enhanced the dem.nd for critical m.tals like lithium.resulting in im.rov.d m.thods to explore,extract,and utilize these *** this com.rehensiv. rev.ew,we discuss the different types of lithium.resources,factors,and m.chanism. controlling lithium.enrichm.nt in v.rious geological settings including terrestrial and m.rine *** exploration strategies including geological,geophysical,m.neralogical,geochem.cal,and rem.te sensing techniques including drone-based techniques for lithium.exploration studies in different terranes are *** ov.rv.ew of the m.ning techniques,including beneficiation and extraction,and their principles,m.chanism.,operations,and com.arison of the v.rious approaches and com.atibility with different types of lithium.deposits for obtaining m.xim.m.yield are *** isotopic studies are useful in understanding geological processes such as past weathering ev.nts and riv.rine input into the oceans,as well as in understanding the source of lithium.in div.rse types of *** also highlight the recent dev.lopm.nts in other areas such as recycling,env.ronm.ntal im.act,and state-of-the-art analytical techniques for determ.ning lithium.in different lithium.ore deposits and other geological *** ov.rv.ew prov.des the latest dev.lopm.nts and insights in the v.rious sectors related to lithium.and prom.t further dev.lopm.nts to m.et the growing dem.nd for this v.luable m.tal as the world transform. to clean energy.

关键词： Lithium.m.nerals Pegm.tite Lithium.brine deposits Lithium.sedim.ntary deposits Exploration techniques

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m.llim.tric dev.ces for nerv. 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

Nerv. stim.lation is a rapidly dev.loping field,dem.nstrating positiv. outcom.s across sev.ral *** potential benefits,current nerv. stim.lation dev.ces are large,com.licated,and are powered v.a im.lanted pulse *** facto rs necessitate inv.siv. surgical im.lantation and lim.t potential *** nerv. stim.lation dev.ces to m.llim.tric sizes would m.ke these interv.ntions less inv.siv. and facilitate broader therapeutic ***,dev.ce m.niaturization presents a serious engineering *** rev.ew presents significant adv.ncem.nts from.sev.ral groups that hav. ov.rcom. this challenge and dev.loped m.llim.tricsized nerv. stim.lation *** are based on antennas,m.ni-coils,m.gneto-electric and optoelectronic m.terials,or receiv. ultrasound *** highlight key design elem.nts,findings from.pilot studies,and present sev.ral considerations for future applications of these dev.ces.

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

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