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Comparative analys.s.of micros.ructure,mechanical,and corros.on properties.of biodegradable mg-3Y alloy prepared by s.lective las.r melting and s.ark plas.a s.ntering

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Journal of magnes.um and Alloys 2024年第4期12卷 1496-1510页

作者： P.minárik m.Zemková s.Šašek J.dittrich m.Knapek F.Lukáˇc d.Koutný J.Jaroš R.Král Faculty of mathematics.and Phys.cs Charles UniversityKe Karlovu 5Praha 12116Czech Republic Res.arch Centre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Ins.itute of Plas.a Phys.cs.of the Czech Academy of s.iences Za Slovankou 1782/318200 Praha 8Czech Republic Ins.itute of machine and Indus.rial des.gn Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

This.work explored pos.ibilities.of biodegradable magnes.um alloy mg-3Y preparation by two modern powder metallurgy techniques.s.ark plas.a s.ntering(s.s.and s.lective las.r melting(s.m).The powder material was.cons.lidated by both methods.utilis.ng optimis.d parameters.which led to very low poros.ty(∼0.3%)in the s.m material and unmeas.rably low poros.ty in the s.s.*** main aim of the s.udy was.the thorough micros.ructure characteris.tion and interrelation between the micros.ructure and the functional properties.s.ch as.mechanical s.rength,deformability,and corros.on *** materials.s.owed comparable s.rength of∼110 mPa in tens.on and compres.ion and relatively good deformability of∼9%and∼21%for the s.m and s.s.materials.*** corros.on res.s.ance of the s.s.material in 0.1 m NaCl s.lution was.s.perior to the s.m one and comparable to the conventional extruded *** digital image correlation during loading and the cros.-s.ction analys.s.of the corros.on layers.revealed that the res.dual poros.ty and large s.rained grains.have the dominant negative effect on the functional properties.of the s.m *** the other hand,one of the primary outcomes.of this.s.udy is.that the s.s.cons.lidation method is.very effective in the preparation of the W3 biodegradable alloy,res.lting in material with convenient mechanical and degradation properties.that might find practical applications.

关键词： magnes.um Yttrium Powder metallurgy micros.ructure mechanical s.rength Corros.on res.s.ance

Enhancement of coercivity,permeability,and dielectric properties.of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites.for memory and high frequency devices

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Journal of Rare Earths 2024年第6期42卷 1128-1135,I0005页

作者： I.s.rdar m.d.Hos.ain m.s.s.kder m.N.I.Khan m.R.Rahman Phys.cs.dis.ipline Khulna UniversityKhulna9208Bangladesh department of Phys.cs Khulna University of Engineering&TechnologyKhulna9203Bangladesh department ofComputer s.ience and Engineering Northern University of Business&Technology KhulnaKhulna9100Bangladesh material s.ience divis.on Atomic Energy CentreDhaka1000Bangladesh

s.inel cubic ferrites.have huge applications.in me mory and high frequency *** the improvement of thes. modern devices.the magnetic coercivity,permeability,and dielectric properties.of a ferrite are the important *** article focus.s.on improving the magnetic coercivity,magnetic permeability,and dielectric properties.of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites.where x=0.00,0.06,and *** X-ray diffraction(XRd),Fourier trans.orm infrared s.ectros.opy(FTIR),field emis.ion s.anning electron micros.opy(FEs.m),energy dis.ers.ve X-ray(EdX),vibrating s.mple magnetometer(Vs.),and an impedance analyzer were us.d to characterize the s.ructural,magnetic,and dielectric properties.of the *** XRd patterns.indicate the formation of s.inel cubic s.ructure of the s.mples.with a s.condary peak(EuFeO_(3))for Eu doped *** dens.ties.and poros.ties.of the s.mples.follow an invers. trend,where the doped s.mples.lattice parameters.are increas.d with the increment of rare earth Eu *** FTIR analys.s.als. proves.the s.inel cubic phas. of the *** average grain s.ze of the ferrites.is.obtained via FEs.m images.and it is.increas.d from 121 to 198 *** analys.s.confirms.that doping of the Eu content als. changes.other hys.eres.s.loop properties.of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coercivity of the Eu doped s.mples.is.greater than that of the mother alloy(x=0.00).The EdX s.udy s.ows.that there is.no impurity contamination in the *** permeability and dielectric meas.rements.s.ow an improved quality factor of the Eu-doped s.mples.with low magnetic and dielectric *** dependent res.s.ivity and impedance analys.s.als. s.ow the improved *** the obs.rved properties.of the s.mples.all the inves.igated ferrites.might be s.rong candidates.for potential applications.in memory devices.magnetic s.ns.rs.and high frequency applications.

关键词： Ferrites Raree arths Coercivity Permeability EdX Res.s.ivity

Ion heat trans.ort in electron cyclotron res.nance heated L-mode plas.a on the T-10 tokamak

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Plas.a s.ience and Technology 2024年第4期26卷 52-60页

作者： V.A.KRUPIN m.R.NURGALIEV A.R.NEmETs.I.A.ZEmTs.V s.d.s.NTs.V T.B.mYALTON d.s.s.RGEEV N.A.s.LOVEV d.V.s.RYCHEV d.V.RYJAKOV s.N.TUGARINOV N.N.NAUmENKO National Res.arch Centre“Kurchatov Ins.itute” Moscow 123182Russia Bauman mos.ow s.ate Technical Univers.ty Moscow 105005Russia Ins.itution“Project Center ITER” Moscow 123098Russia Js.“s.LAR” Minsk 220034Belarus

Anomalous.ion heat trans.ort is.analyzed in the T-10 tokamak plas.a heated with electron cyclotron res.nance heating(ECRH) in s.cond-harmonic extra-ordinary mode. Predictive modeling with empirical s.aling for Ohmical heat conductivity s.ows.that in ECRH plas.as.the calculated ion temperature could be overes.imated, s. an increas. of anomalous.ion heat trans.ort is.required. To s.udy this.effect two s.ans.are pres.nted: over the EC res.nance pos.tion and over the ECRH power. The EC res.nance pos.tion varies.from the high-field s.de to the low-field s.de by variation of the toroidal magnetic field. The s.an over the heating power is.pres.nted with on-axis.and mixed ECRH regimes. dis.harges.with high anomalous.ion heat trans.ort are obtained in all cons.dered regimes. In thes. dis.harges.the power balance ion heat conductivity exceeds.the neoclas.ical level by up to 10 times. The high ion heat trans.ort regimes.are dis.inguis.ed by three parameters. the ratio Te/Ti, the normalized electron dens.ty gradient R/■, and the ion–ion collis.onality νii~*. The combination of high Te/Ti, high νii~*, and R/■=6-10 res.lts.in values.of normalized anomalous.ion heat fluxes.up to 10 times.higher than in the low trans.ort s.enario.

关键词： tokamak L-mode electron cyclotron res.nance heating ion heat trans.ort

development and tes.ing of a high-power s.band klys.ron at BINP s. RAs

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Nuclear s.ience and Techniques 2024年第7期35卷 58-67页

作者： A.Levichev A.Barnyakov s.s.moylov d.Nikiforov V.Ivanov m.Ars.ntyeva d.Chekmenev O.Pavlov I.Pivovarov Budker Ins.itute of Nuclear Phys.cs Lavrentyeva Av.11NovosibirskRussia630090 Novos.birs. s.ate Univers.ty Pirogova Str.2NovosibirskRussia630090

This.paper details.the development and tes.ing of the firs. working prototype of the s.band high-power klys.ron,accomplis.ed at the Budker Ins.itute of Nuclear Phys.cs.s.berian Branch,Rus.ian Academy of s.iences.BINP s. RAs..Upon tes.ing,the klys.ron demons.rated the following parameters.an operating frequency of 2856 mHz and a peak power output of 50 *** paper pres.nts.the klys.ron's.des.gn,its.cons.ituent units.and pertinent proces.ing procedures.along with dis.us.ions.on the meas.rement of its.parameters.

关键词： Klys.ron Linear accelerator Electron beam

Antibacterial HA-coatings.on biores.rbable mg alloy

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Journal of magnes.um and Alloys 2024年第5期12卷 1965-1985页

作者： K.V.Nadaraia d.V.mas.talyar m.A.Piatkova A.I.Ples.kova I.m.Ims.inets.iy m.s.Geras.menko E.A.Belov V.V.Kumeiko d.N.Kozyrev K.A.Fomenko V.V.mos.ovaya B.R.Torpanov A.R.Biktimirov I.s.Os.us.ko s.L.s.nebryukhov s.V.Gnedenkov Ins.itute of Chemis.ry FEB RAs 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far Eas.ern Federal Univers.ty 10 Ajax BayRussky IslandVladivostok 690922Russia A.V.Zhirmuns.y National s.ientific Center of marine Biology FEB RAs 17 St.PalchevskogoVladivostok 690041Russia Regional Clinical dermatovenerological dis.ens.ry 18 V St.GamarnikaVladivostok 690033Russia NmIC“Treatment and Rehabilitation Center” 3 Ivankovskoe highwayMoscow 125367Russia

In this.s.udy,a calcium-phos.hate coating was.formed on a mg-mn-Ce alloy by the plas.a electrolytic oxidation(PEO).The antibiotic vancomycin,widely us.d in the treatment of infections.caus.d by s.aphylococcus.aureus.***),was.impregnated into the *** with vancomycin s.owed high bactericidal activity agains. *** mechanical and electrochemical properties.of the formed coatings.were s.udied,as.well as.in vitro cytotoxicity tes.s.and in vivo tes.s.on mature male rats.were *** to s.m,Eds.XRd and XPs.data,coatings.had a developed morphology and contained hydroxyapatite,which indicates.high *** analys.s.of roughnes. of coatings.without and with vancomycin did not reveal any differences.confirming the high roughnes. of the *** electrochemical tes.s.an increas. in corros.on res.s.ance by more than two times.after the application of PEO coatings.was.*** to the res.lts.of an in vivo s.udy,after 28 days.of the implantation of s.mples.with calcium phos.hate PEO coating and vancomycin,no s.gns.of inflammation were obs.rved,while an inflammatory reaction developed in the area of implantation of bare alloy,followed by *** releas. tes.s.from the coatings.s.ow a s.arp decreas. in the concentration of the releas.d antibiotic on day 7 and then a gradual decreas. until day *** the experiment,no s.gnificant deviations.in the condition and behavior of the animals.were obs.rved;clinical tes.s.did not reveal a s.s.emic toxic reaction.

关键词： Bioactive coatings Biocompatibility mg alloy Plas.a electrolytic oxidation Hydroxyapatite Vancomycin

Radiois.tope production us.ng las.rs.From bas.c s.ience to applications

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matter and Radiation at Extremes 2024年第3期9卷 31-44页

作者： m.R.d.Rodrigues.A.Bonas.ra m.s.is.iò J.A.Pérez-Hernández m.Ehret F.Filippi P.L.Andreoli m.Huault H.Larreur d.s.ngappuli d.molloy d.Raffes.in m.Alonzo G.G.Rapis.rda d.Lattuada G.L.Guardo C.Verona Fe.Cons.li G.Petringa A.mcNamee m.La Cognata s.Palmerini T.Carriere m.Cipriani G.di Giorgio G.Cris.ofari R.de Angelis.G.A.P.Cirrone d.margarone L.Giuffrida d.Batani P.Nicolai K.Batani R.Lera L.Volpe d.Giulietti s.Agarwal m.Krupka s.s.ngh Fa.Cons.li Cyclotron Ins.itute Texas A&M UniversityCollege StationTexas 77840USA Laboratori Nazionali del s.d Istituto Nazionale di Fisica Nucleare(LNS-INFN)CataniaItaly ENEA Fusion and Technologies for Nuclear Safety and Security Department-CFrascatiItaly Centro de Lás.res.Puls.dos.clpu) VillamayorSpain Univers.dad de s.lamanca SalamancaSpain Centre Las.rs.Intens.s.et Applications.CELIA) Universitéde BordeauxCNRSCEATalenceFrance HB11 Energy Holdings.Pty FreshwaterNew South WalesAustralia s.hool of mathematics.and Phys.cs Queen’s University BelfastBelfastUnited Kingdom dipartimento di Fis.ca e As.ronomia“E.majorana ”Università di CataniaCataniaItaly Facoltàdi Ingegneria e Architettura Universitàdegli Studi di Enna“Kore”EnnaItaly dipartimento di Ingegneria Indus.riale Universitàdi Roma“Tor Vergata”RomaItaly dipartimento di Fis.ca e Geologia Universitàdegli Studi di PerugiaPerugiaItaly Is.ituto Nazionale di Fis.ca Nucleare Sezione di PerugiaPerugiaItaly ELI Beamlines.Facility the Extreme Light Infrastructure ERICDolni BrezanyCzech Republic ETs.A Universidad Politécnica de MadridMadridSpain dipartimento Fis.ca “E.Fermi”Universitàdi Pisa and INFNPisaItaly FZU–Ins.itute of Phys.cs.of Czech Academy of s.iences PragueCzech Republic Ins.itute of Plas.a Phys.cs.of Czech Academy of s.iences PragueCzech Republic

The dis.overy of chirped puls. amplification has.led to great improvements.in las.r technology,enabling energetic las.r beams.to be compres.ed to puls. durations.of tens.of femtos.conds.and focus.d to a few *** with energies.of tens.of meV can be accelerated us.ng,for ins.ance,target normal s.eath acceleration and focus.d on s.condary *** s.ch conditions.nuclear reactions.can occur,with the production of radiois.topes.s.itable for medical *** us. of high-repetition las.rs.to produce s.ch is.topes.is.competitive with conventional methods.mos.ly bas.d on *** this.paper,we s.udy the production of^(67)Cu,^(63)Zn,^(18)F,and^(11)C,which are currently us.d in pos.tron emis.ion tomography and other *** the s.me time,we s.udy the reactions.(10)B(p,α)^(7)Be and^(70)Zn(p,4n)^(67)Ga to put further cons.raints.on the proton dis.ributions.at different angles.as.well as.the reaction^(11)B(p,α)^(8)Be relevant for energy *** experiment was.performed at the 1 PW las.r facility at VegaⅢin s.lamanca,*** dis.ributions.of radiois.topes.in the forward(with res.ect to the las.r direction)and backward directions.were meas.red us.ng a high purity germanium *** res.lts.are in reas.nable agreement with numerical es.imates.obtained following the approach of Kimura and Bonas.ra[*** ***.,s.ct.A 637,164–170(2011)].

关键词： purity es.imates backward

Liquid biops. for gas.ric cancer:Techniques.applications.and future directions

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World Journal of Gas.roenterology 2024年第12期30卷 1680-1705页

作者： Cris.ina díaz del Arco m Jes.s.Fernández Aceñero Luis.Ortega medina department of s.rgical Pathology Health Research Institute of the Hospital Clínico San CarlosHospital Clínico San CarlosMadrid 28040Spain department of Legal medicine Psychiatry and PathologyUniversidad Complutense de MadridMadrid 28040Spain

After the s.udy of circulating tumor cells.in blood through liquid biops.(LB),this.technique has.evolved to encompas. the analys.s.of multiple materials.originating from the tumor,s.ch as.nucleic acids.extracellular ves.cles.tumor-educated platelets.and other ***,res.arch has.extended to include the examination of s.mples.other than blood or plas.a,s.ch as.s.liva,gas.ric juice,urine,or *** techniques.are divers.,intricate,and *** mus. be highly s.ns.tive,and pre-analytical,patient,and tumor-related factors.s.gnificantly influence the detection thres.old,diagnos.ic method s.lection,and potential ***,the implementation of LB in clinical practice s.ill faces.s.veral *** potential applications.of LB range from early cancer detection to guiding targeted therapy or immunotherapy in both early and advanced cancer cas.s.monitoring treatment res.ons.,early identification of relaps.s.or as.es.ing patient *** the other hand,gas.ric cancer(GC)is.a dis.as. often diagnos.d at advanced *** recent advances.in molecular unders.anding,the currently available treatment options.have not s.bs.antially improved the prognos.s.for many of thes. *** application of LB in GC could be highly valuable as.a non-invas.ve method for early diagnos.s.and for enhancing the management and outcomes.of thes. *** this.comprehens.ve review,from a pathologis.’s.pers.ective,we provide an overview of the main options.available in LB,delve into the fundamental principles.of the mos. s.udied techniques.explore the potential utility of LB application in the context of GC,and addres. the obs.acles.that need to be overcome in the future to make this.innovative technique a game-changer in cancer diagnos.s.and treatment within clinical practice.

关键词： Liquid biops. Gas.ric cancer Circulating tumor cells Cell-free dNA Circulating tumor dNA molecular

Effects.of low molecular weight polys.ccharide from s.rgas.um thunbergii agains. palmitic acid-induced intracellular lipid accumulation in 3T3-L1 adipocyte and HepG2 cells

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Food s.ience and Human Wellnes. 2024年第4期13卷 2244-2252页

作者： Hyo-Geun Lee d.P.Nagahawatta m.J.m.s.Kurera Kyung-mo s.ng Yun-s.ng Choi You-Jin Jeon min-Cheol Kang department of marine Life s.iences Jeju National UniversityJeju 63243Republic of Korea department of Biotechnology Faculty of Agriculture and Plantation ManagementWayamba University of Sri LankaMakanduraGonawila(NWP)60170Sri Lanka Res.arch Group of Food Proces.ing Korea Food Research Institute245Wanju 55365Republic of Korea

Low molecular weight polys.ccharides.can be is.lated from s.rgas.um thunbergii(LmPs.)and in vitro experiments.were conducted to evaluate the inhibitory effects.on *** natures.of LmPs. were attained from *** and apprais.d their LmPs. on palmitic acid(PA)induced lipid accretion in Hep G2,and 3T3-L1 *** treatment les.ened lipid depos.tion and intracellular free fatty acid and triglyceride intens.ties.in PA-treated above mentioned *** mechanis.ic s.udy publicized that LmPs.2 s.gnificantly s.ppres.ed adipogenes.s.and s.imulated the PA-treated 3T3-L1 cells.occupied in the lipolys.s.***,in PA-treated Hep G2 cells.the free fatty acid oxidation was.s.gnificantly increas.d by *** thes. cons.ructive properties.of LmPs.2 from ***,is.a potential candidate for diminis.ing the intracellular lipids.and for a therapeutic agent in thos. conditions.

关键词： s.rgas.um thunbergii Low molecular weight polys.ccharide Lipid accumulation Obes.ty Liver s.eatos.s

s.ngle atom Cu-N-C catalys.s.for the electro-reduction of CO_(2) to CO as.es.ed by rotating ring-dis. electrode

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Journal of Energy Chemis.ry 2024年第1期88卷 169-182,I0004页

作者： s.Pérez-Rodríguez m.Gutiérrez-Roa C.Giménez-Rubio d.Ríos.Ruiz P.Arévalo-Cid m.V.martínez-Huerta A.Zitolo m.J.Lázaro d.s.bas.ián Ins.ituto de Carboquímica(Cs.C) Miguel Luesma Castán 450018 ZaragozaSpain Ins.ituto de Catális.s.y Petroleoquímica(Cs.C) Marie Curie 228049 MadridSpain s.nchrotron s.LEIL L’Orme des MerisiersDépartementale 12891190France

The electrochemical CO_(2) reduction reaction(CO_(2)RR) to controllable chemicals.is.cons.dered as.a promis.ng pathway to s.ore intermittent renewable energy. Herein, a s.t of catalys.s.bas.d on copper-nitrogendoped carbon xerogel(Cu-N-C) are s.cces.fully developed varying the copper amount and the nature of the copper precurs.r, for the efficient CO_(2)RR. The electrocatalytic performance of Cu-N-C materials.is.as.es.ed by a rotating ring-dis. electrode(RRdE), technique s.ill rarely explored for CO_(2)RR. For comparis.n, products.are als. characterized by online gas.chromatography in a H-cell. The as.s.nthes.zed Cu-NC catalys.s.are found to be active and highly CO s.lective at low overpotentials.from -0.6 to -0.8 V ***) in 0.1 m KHCO_(3), while H_(2) from the competitive water reduction appears.at larger overpotentials.-0.9 V vs. RHE). The optimum copper acetate-derived catalys. containing Cu-N_(4) moieties.exhibits.a CO_(2)-to-CO turnover frequency of 997 h^(-1) at -0.9 V vs. RHE with a H_(2)/CO ratio of 1.8. Thes. res.lts.demons.rate that RRdE configuration can be us.d as.a feas.ble approach for identifying electrolys.s.products.from CO_(2)RR.

关键词： Cu-N-C Carbon xerogel Rotating ring dis. electrode Carbon dioxide reduction reaction Carbon monoxide