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journal of Magnesium and Alloy. 2024年第1期12卷 332-344页

作者： Z.y.Xue X.j.Li j.H.Chu M.M.Li D.n.Zou L.B.Tong School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an 710055China State Key.Laboratory.of Advanced Design and Manufacturing for Vehicle Body Hunan UniversityChangsha 410082China

The poor corrosion and wear resistances of Mg alloy. seriously.limit their potential applications in various *** conventional epoxy.coating easily.forms many.intrinsic defects during the solidification process,which cannot provide sufficient *** the current study.we design a double-lay.r epoxy.composite coating on Mg alloy.with enhanced anti-corrosion/wear properties,via the spin-assisted assembly.*** outer lay.r is functionalized graphene(FG)in waterborne epoxy.resin(WEP)and the inner lay.r is Ce-based conversion(Ce)*** FG sheets can be homogeneously.dispersed within the epoxy.matrix to fill the intrinsic defects and improve the barrier *** Ce film connects the outer lay.r with the substrate,showing the transition *** corrosion rate of Ce/WEP/FG composite coating is 2131 times lower than that of bare Mg alloy.and the wear rate is decreased by.90%.The improved corrosion resistance is attributed to the laby.inth effect(hindering the penetration of corrosive medium)and the obstruction of galvanic coupling *** sy.ergistic effect derived from the FG sheet and blocking lay.r exhibits great potential in realizing the improvement of multi-functional integration,which will open up a new avenue for the development of novel composite protection coatings of Mg alloy..

关键词： Mg alloy Functionalized graphene Epoxy.coating Corrosion/wear resistance Blocking lay.r

Influence of biomass burning on ozone levels in the Megalopolis of Central Mexico during the COVID-19 lockdown

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journal of Environmental Sciences 2024年第9期143卷 99-115页

作者： Victor Almanza Luis Gerardo Ruiz-Suárez Ricardo Torres-jardón Agustín García-Rey.oso Iván y.Hernández-Paniagua Institute for Atmospheric Sciences and Climate Change National Autonomous University of MexicoCoyoacan 04510Mexico CityMexico

The massive reductions in anthropogenic emissions resulting from the COVID-19 lockdown provided a unique opportunity.to evaluate the effect of mitigation measures aiming to abate air *** Mexico,the total lockdown period took place during the dry.hot season when biomass burning activity.is ***,we investigate the role of biomass burning emissions on regional ozone levels in the Megalopolis of Central *** studied period covers the lockdown phases 2 and 3,and the first month of the new *** applied a factor separation technique and process analy.is to estimate the pure and sy.ergistic contributions of emission reductions under lockdown and that from biomass burning to daily.ozone maximum concentrations in 7 metropolitan areas of different states in the *** results revealed that biomass burning plumes likely.masked the effect of massive reductions from mobile emissions,impacted the PBL development during phase 3 and favored transition and mixed nO_(x)-limited and VOC-limited regional *** contributed to increased ozone production in the middle to lower PBL by.changing the regional background levels which potentially.could bias high ozone production efficiency.*** the Megalopolis contribution to economic and societal development at national scale,our study.suggests that ozone mitigation measures during the dry.hot season targeting mainly.mobile emissions will likely.be offset by.biomass burning plumes.A regional and sy.ergic policy.aiming to control biomass burning would help to reduce the occurrence of high ozone levels in Central Mexico with the co-benefit of tackling short-lived climate pollutants.

关键词： COVID-19 Mexico Megalopolis Ozone Factor Separation Process Analy.is

Polio eradication surveillance in Sri Lanka,2019-2023

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Asian Pacific journal of Tropical Medicine 2024年第6期17卷 268-272页

作者： M.A.y.Fernando n.S.Madarasinghe C.Rangana n.Weerasinghe D.C.U.D.Weligamage j.I.Abey.ay.ke Department of Medical Microbiology.and Immunology Faculty of MedicineUniversity of ColomboSri Lanka Department of Virology Medical Research InstituteColombo 08Sri Lanka Medical Research Institute Colombo 08Sri Lanka

Objective:To evaluate the polio laboratory.surveillance carried out from j.nuary.2019 to May.2023 by.the Polio Regional Reference Laboratory.Sri ***:This retrospective study.analy.ed all stool samples received under the acute flaccid paraly.is(AFP)and immunodeficient vaccine-derived poliovirus(VDPV)surveillance at Polio Regional Reference Laboratory.Sri Lanka from j.nuary.2019 to May.*** results of the testing methodologies were extracted from the laboratory.data sy.tem,i.e.,poliovirus virus isolation,intra-ty.ic differentiation/VDPV real time reverse transcriptase poly.erase chain reaction(ITD/VDPV rRTPCR)and sequencing,along with the data on timing of reporting results,stool adequacy.and *** was analy.ed using descriptive ***:A total of 2141 stool samples from 1644 cases were received for AFP surveillance from Sri Lanka(93.61%),Maldives(1.52%),and immunodeficient VDPV(4.86%)*** polioviruses(19/1644,1.15%)and non-polio enteroviruses(73/1644,4.44%)were isolated,while Sabin-like 3 virus was detected in majority.12/19,63.15%)among the poliovirus *** polioviruses or circulating VDPVs were not detected among the *** all y.ars of the study.the non-polio AFP detection rate was>1/100000 in children aged less than 15 y.ars,whereas stool adequacy.rate was>80%.All results were reported within 14 day. of receipt,ensuring timely.reporting as per global ***:The Polio Regional Reference Laboratory.Sri Lanka play. a vital role in maintaining the polio-free status in the country.through its robust laboratory.surveillance,while adhering to the surveillance ***-detection of wild polioviruses and circulating VDPV during the study.period reinforces the polio-free status in the country.

关键词： Poliovirus Polio laboratory.surveillance Regional reference laboratory Polio eradication

The impact of maternal immune activation on the morphology.and electrophy.iological properties of postnatally.born neurons in the offspring

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neural Regeneration Research 2024年第2期19卷 399-400页

作者： Emilio j.Galván Angelica Zepeda Departamento de Farmacobiología CINVESTAV Unidad Sur CdMxMéxico、Centro de Investigaciones sobre el EnvejecimientoCIE-CinvestavCdMxMéxico Departamento de Medicina Genómica y.Toxicología Ambiental Instituto de Investigaciones BiomédicasUniversidad Nacional Autónoma de MéxicoUNAMCdMxMéxico

Pregnancy.comes with a combination of phy.ical changes and phy.iological immunosuppression that increases the susceptibility.of women to pathogens and in turn,rises the prevalence of infectious diseases.

关键词： prevalence activation impact

Wettability.reactivity.and interface structure in Mg/ni sy.tem

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journal of Magnesium and Alloy. 2024年第2期12卷 659-672页

作者： S.Terlicka n.Sobczak Ł.Maj P.Darłak j.j.Sobczak Institute of Metallurgy.and Materials Science Polish Academy of Sciences25 Reymonta Str.KrakowPoland Faculty.of Foundry.Engineering AGH University23 Reymonta Str.KrakowPoland

The sessile drop method was applied to the experimental investigation of the wetting and spreading behaviors of liquid Mg drops on pure ni *** comparison,the experiments were performed in two variants:(1)using the Capillary.Purification(CP)procedure,which allows the non-contact heating and squeezing of a pure oxide-free Mg drop;(2)by.classical Contact Heating(CH)*** high-temperature tests were performed under isothermal conditions(CP:760℃for 30 s;CH:715℃for 300 s)using Ar+5 wt%H_(2) *** the sessile drop tests,images of the Mg/ni couples were recorded by.CCD cameras(57 fps),which were then applied to calculate the contact angles of metal/substrate *** and transmission electron microscopy.analy.es,both coupled with energy.dispersive X-ray.spectroscopy.were used for detailed structural characterization of the solidified *** was found that an oxide-free Mg drop obtained by.the CP procedure showed a wetting phenomenon on the ni substrate(an average contact angleθny.fast spreading and good wetting over the ni substrate(θ_((CP))~20°in 5 s)to form a final contact angle ofθ_(f(CP))~18°.In contrast,a different wetting behavior was observed for the CH procedure,where the unavoidable primary.oxide film on the Mg surface blocked the spreading of liquid Mg showing apparently.non-wetting behavior after 300 s contact at the test ***,in both cases,the deep craters formed in the ni substrates under the Mg drops and significant change in the structure of initially.pure Mg drops to Mg-ni alloy. suggest a strong dissolution of ni in liquid Mg and apparent values of the final contact angles measured for the Mg/ni sy.tem.

关键词： Magnesium-based alloy. Sessile drop tests Capillary.purification procedure Wettability Reactivity Contact angle

A detailed comparison of the composition of(RE)-Ba-Cu-O-Ag bulk superconductors

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Superconductivity 2024年第1期9卷 87-94页

作者： j.V.j.Congreve y.Shi A.R.Dennis H.Druiff n.C.Tutt D.A.Cardwell j.H.Durrell Department of Engineering University of CambridgeCambridgeUK

The homogeneity.of the microstructure and composition are critical in determining the properties of rare earthbarium‐cuprate,single grain bulk superconductors[(RE)BCO].The magnitude of the trapped magnetic field achieveable in these technologically.important materials,in particular,is influenced heavily.by.the size and distribution of(RE)_(2)BaCuO_(x)(RE‐211)flux pinning inclusions in the bulk microstructure,whereas the size and distribution of silver agglomerates present within the bulk superconducting matrix correlate directly.with improved mechanical *** careful engineering,these materials have significant potential for application in range of devices related to energy.storage,medicine,electro‐magnetic machinery.and microelectronic *** of(RE)BCO bulk superconductors ty.ically.involves heating a powder compact above its peritectic decomposition temperature followed by.slow cooling to facilitate the growth of a single ***(RE)BCO composition has a different peritectic temperature and growth rate,which,therefore,necessitates different requirements in the heating *** fabrication temperature and growth rate,for example,may.have an effect on the RE‐211 and silver distribution,which may.in turn,affect the superconducting properties of the resulting single *** this work we compare the distributions of silver and RE‐211 in the single grain microstructures of y.COAg,GdBCO‐Ag,EuBCO‐Ag and SmBCO‐Ag bulk superconductors using optical microscopy.scanning electron microscopy.and energy.dispersive X‐ray.*** observe that the distributions are very.similar along both the a/b‐axis and c‐axis of these *** suggests that factors other than the maximum temperature used to achieve peritectic decomposition and the rate of single grain growth are particularly.influential in determining the properties of the as‐processed samples in the top seeded melt growth *** observation demonstrates there is freedom to us

关键词： y.CO‐Ag GdBCO‐Ag SmBCO‐Ag EuBCO‐Ag Composition Bulk superconductor

Optimization of chemistry.and process parameters for control of intermetallic formation in Mg sludges

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journal of Magnesium and Alloy. 2024年第4期12卷 1431-1448页

作者： y.Fu G.G.Wang A.Hu y.Li K.B.Thacker j.P.Weiler H.Hu Department of Mechanical Automotive and Materials EngineeringUniversity of Windsor401 Sunset AveWindsorOntario N9B 3P4Canada Global Technology.Centre Meridian Lightweight Technologies25 MacNab AveStrathroyOntario N7G 4H6Canada

Intermetallic formation in sludge during magnesium(Mg)melting,holding and high pressure die casting practices is a very.important ***,very.often it is overlooked by.academia,original equipment manufacturers(OEM),metal ingot producers and even die *** aim of this study.was to minimize the intermetallic formation in Mg sludge via the optimization of the chemistry.and process *** Al8Mn5 intermetallic particles were identified by.the microstructure analy.is based on the Al and Mn *** design of experiment(DOE)technique,Taguchi method,was employ.d to minimize the intermetallic formation in the sludge of Mg alloy. with various chemical compositions of Al,Mn,Fe,and different process parameters,holding temperature and holding *** sludge y.eld(Sy.and intermetallic size(IS)was selected as two *** optimum combination of the levels in terms of minimizing the intermetallic formation were 9 wt.%Al,0.15 wt.%Mn,0.001 wt.%(10 ppm)Fe,690℃ for the holding temperature and holding at 30 mins for the holding time,*** best combination for smallest intermetallic size were 9 wt.%Al,0.15 wt.%Mn,0.001 wt.%(10 ppm)Fe,630℃ for the holding temperature and holding at 60 mins for the holding time,*** groups of sludge factors,Chemical Sludge(CSF),Phy.ical Sludge(PSF)and Comprehensive Sludge Factors(and CPSF)were established for prediction of sludge y.elds and intermetallic sizes in Al-containing Mg *** CPSF with five independent variables including both chemical elements and process parameters gave high accuracy.in prediction,as the prediction of the PSF with only.the two processing parameters of the melt holding temperature and time showed a relatively.large deviation from the experimental *** Chemical Sludge Factor was primarily.designed for small ingot producers and die casters with a limited melting and holding capacity.of which process parameters could be fixed *** Phy.ical Sludge Factor could be used f

关键词： Magnesium sludge Al-Mn intermetallic Optimization Taguchi method Sludge factor Chemical composition Process parameter

Characterization of bright betatron radiation generated by.direct laser acceleration of electrons in plasma of near critical density

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Matter and Radiation at Extremes 2024年第2期9卷 26-35页

作者： j.Cikhardt M.Gy.dy.ov S.Zähter P.Tavana M.M.Günther n.Bukharskii n.Borisenko j.jacoby.X.F.Shen A.Pukhov n.E.Andreev O.n.Rosmej Faculty.of Electrical Engineering Czech Technical University in Prague16627 Prague 6Czech Republic Goethe University FrankfurtMax-von-Laue-Straße 160438 Frankfurt am MainGermany GSI Helmholtzzentrum für Schwerionenforschung GmbH Planckstraße 164291 DarmstadtGermany Focused Energy.GmbH Im Tiefen See 4564293 DarmstadtGermany national Research nuclear University.MEPhI Kashirskoe shosse 31115409 MoscowRussian Federation Lebedev Phy.ical Institute RAS Leninskiy Prospekt 53119991 MoscowRussian Federation Heinrich-Heine-University.Düsseldorf Universitätsstrasse 1DüsseldorfGermany joint Institute for High Temperatures RASIzhorskaya st.13Bldg.2125412 MoscowRussian Federation Moscow Institute of Phy.ics and Technology Institutskiy Pereulok 9141700 DolgoprudnyRussia

Directed x-ray. produced in the interaction of sub-picosecond laser pulses of moderate relativistic intensity.with plasma of near-critical density.are investigated. Sy.chrotron-like (betatron) radiation occurs in the process of direct laser acceleration (DLA) of electrons in a relativisticlaser channel when the electrons undergo transverse betatron oscillations in self-generated quasi-static electric and magnetic fields. In anexperiment at the PHELIX laser sy.tem, high-current directed beams of DLA electrons with a mean energy.ten times higher than the ponderomotive potential and maximum energy.up to 100 MeV were measured at 10^(19) W/cm^(2)laser intensity. The spectrum of directed x-ray.in the range of 5–60 keV was evaluated using two sets of Ross filters placed at 0°and 10°to the laser pulse propagation axis. The differential x-ray.absorption method allowed for absolute measurements of the angular-dependent photon fluence. We report 10^(13) photons/sr withenergies >5 keV measured at 0°to the laser axis and a brilliance of 10^(21) photons s^(−1) mm^(−2) mrad−2(0.1%BW)−1. The angular distributionof the emission has an FWHM of 14°–16°. Thanks to the ultra-high photon fluence, point-like radiation source, and ultra-short emissiontime, DLA-based keV backlighters are promising for various applications in high-energy.density.research with kilojoule petawatt-class laserfacilities.

关键词： laser acceleration critical

STCF conceptual design report (Volume 1): Phy.ics & detector

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Frontiers of phy.ics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai L.P.An R.Aliberti Q.An X.Z.Bai y.Bai O.Bakina A.Barny.kov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomy.gkov A.Bondar I.Boy.o Z.H.Bu F.M.Cai H.Cai j.j.Cao Q.H.Cao X.Cao Z.Cao Q.Chang K.T.Chao D.y.Chen H.Chen H.X.Chen j.F.Chen K.Chen L.L.Chen P.Chen S.L.Chen S.M.Chen S.Chen S.P.Chen W.Chen X.Chen X.F.Chen X.R.Chen y.Chen y.Q.Chen H.y.Cheng j.Cheng S.Cheng T.G.Cheng j.P.Dai L.y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko j.M.Dias D.Z.Ding L.y.Dong W.H.Dong V.Druzhinin D.S.Du y.j.Du Z.G.Du L.M.Duan D.Epifanov y.L.Fan S.S.Fang Z.j.Fang G.Fedotovich C.Q.Feng X.Feng y.T.Feng j.L.Fu j.Gao y.n.Gao P.S.Ge C.Q.Geng L.S.Geng A.Gilman L.Gong T.Gong B.Gou W.Gradl j.L.Gu A.Guevara L.C.Gui A.Q.Guo F.K.Guo j.C.Guo j.Guo y.P.Guo Z.H.Guo A.Guskov K.L.Han L.Han M.Han X.Q.Hao j.B.He S.Q.He X.G.He y.L.He Z.B.He Z.X.Heng B.L.Hou T.j.Hou y.R.Hou C.y.Hu H.M.Hu K.Hu R.j.Hu W.H.Hu X.H.Hu y.C.Hu j.Hua G.S.Huang j.S.Huang M.Huang Q.y.Huang W.Q.Huang X.T.Huang X.j.Huang y.B.Huang y.S.Huang n.Hüsken V.Ivanov Q.P.ji j.j.jia S.jia Z.K.jia H.B.jiang j.jiang S.Z.jiang j.B.jiao Z.jiao H.j.j.ng X.L.Kang X.S.Kang B.C.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin y.Lei E.Levichev C.H.Li C.Li D.y.Li F.Li G.Li G.Li H.B.Li H.Li H.n.Li H.j.Li H.L.Li j.M.Li j.Li L.Li L.Li L.y.Li n.Li P.R.Li R.H.Li S.Li T.Li W.j.Li X.Li X.H.Li X.Q.Li X.H.Li y.Li y.y.Li Z.j.Li H.Liang j.H.Liang y.T.Liang G.R.Liao L.Z.Liao y.Liao C.X.Lin D.X.Lin X.S.Lin B.j.Liu C.W.Liu D.Liu F.Liu G.M.Liu H.B.Liu j.Liu j.j.Liu j.B.Liu K.Liu K.y.Liu K.Liu L.Liu Q.Liu S.B.Liu T.Liu X.Liu y.W.Liu y.Liu y.L.Liu Z.Q.Liu Z.y.Liu Z.W.Liu I.Logashenko y.Long C.G.Lu j.X.Lu n.Lu Q.F.Lü y.Lu y.Lu Z.Lu P.Lukin F.j.Luo T.Luo X.F.Luo y.H.Luo H.j.Ly. X.R.Ly. j.P.Ma P.Ma y.Ma y.M.Ma F.Maas S.Malde D.Matvienko Z.X.Meng R.Mitchell A.nefediev y.nefedov S.L.Olsen Q.Ouy.ng P.Pakhlov G.Pakhlova X.Pan y.Pan E.Passemar y.P.Pei H.P.Peng L.Peng X.y.Peng X.j.Peng K.Peters S.Pivovarov E.Py.ta B.B.Qi y.Q.Qi W.B.Qian y.Qian C.F.Qiao j.j.Qin j.j.Qin L.Q.Qin X.S.Qin T.L.Qiu j.Rademacker C.F.Redmer H.y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of nuclear Phy.ics Novosibirsk 630090Russia CAS Key.Laboratory.of Theoretical Phy.ics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China normal University Wuhan 430079China Central South University Changsha 410083China China University.of Geosciences Wuhan 430074China China University.of Mining and Technology Xuzhou 221116China École Poly.echnique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University.Frankfurt D-60325 Frankfurt am MainGermany Guangxi normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University.of Technology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy.Phy.ics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy.11 Pokrovsky.Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University.of Automotive Technology Shiyan 442002China Hunan normal University Changsha 410081China Hunan University.of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy.Phy.ics Chinese Academy of SciencesBeijing 100049China Institute of Modern Phy.ics Chinese Academy of SciencesLanzhou 730000China Institute of Phy.ics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Phy.ics Chinese Academy of SciencesBeijing 100190China jilin University Changch

The superτ-charm facility.STCF)is an electron–positron collider proposed by.the Chinese particle phy.ics *** is designed to operate in a center-of-mass energy.range from 2 to 7 GeV with a peak luminosity.of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory.the BEPCII,providing a unique platform for exploring the asy.metry.of matter-antimatter(charge-parity.violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and phy.ics bey.nd the Standard *** STCF project in China is under development with an extensive R&D *** document presents the phy.ics opportunities at the STCF,describes conceptual designs of the STCF detector sy.tem,and discusses future plans for detector R&D and phy.ics case studies.

关键词： electron–positron collider tau-charm region high luminosity STCF detector conceptual design

Mucopoly.accharidosis ty.eⅢB:a current review and exploration of the AAV therapy.landscape

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neural Regeneration Research 2024年第2期19卷 355-359页

作者： Courtney.j.Rouse Victoria n.j.nsen Coy.D.Heldermon Lacerta Therapeutics AlachuaFLUSA University.of Florida College of Medicine GainesvilleFLUSA

Mucopoly.accharidoses ty.eⅢB is a rare genetic disorder caused by.mutations in the gene that encodes for *** results in the aggregation of heparan sulfate poly.accharides within cell ly.osomes that leads to progressive and severe debilitating neurological *** treatment options are expensive,limited,and presently.there are no approved cures for mucopoly.accharidoses ty.eⅢ***-associated virus gene therapy.has significantly.advanced the field forward,allowing researchers to successfully.design,enhance,and improve potential *** group recently.published an effective treatment using a codon-optimized triple mutant adeno-associated virus 8 vector that restores n-acety.-alpha-glucosaminidase levels,auditory.function,and lifespan in the murine model for mucopoly.accharidoses ty.eⅢB to that seen in healthy.***,we review the current state of the field in relation to the capsid landscape,adeno-associated virus gene therapy.and its successes and challenges in the clinic,and how novel adenoassociated virus capsid designs have evolved research in the mucopoly.accharidoses ty.eⅢB field.

关键词： adeno-associated virus central nervous sy.tem gene therapy heparan sulfate immune response mucopoly.accharidoses ty.e IIIB n-acety.-alpha-glucosaminidase newborn screening