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journal of Magnesium and Alloys 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 alloys 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-layer epoxy composite coating on Mg alloy with enhanced anti-corrosion/wear properties,via the spin-assisted assembly *** outer layer is functionalized graphene(FG)in waterborne epoxy resin(wEP)and the inner layer 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 layer 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 labyrinth effect(hindering the penetration of corrosive medium)and the obstruction of galvanic coupling *** synergistic effect derived from the FG sheet and blocking layer 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 alloys.

关键词： Mg alloy Functionalized graphene Epoxy coating corrosion/wear resistance Blocking layer

Effect of Al_(2)O_(3)on the Mechanical Properties of(B_(4)c+Al_(2)O_(3))/Al neutron Absorbing Materials

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Acta Metallurgica Sinica(English letters) 2024年第8期37卷 1411-1420页

作者： j.X.cai B.M.Shi n.li y.liu z.G.zhang y.n.zan Q.z.wang B.l.Xiao z.y.Ma Shi‑changxu Innovation center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Key laboratory of nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China nuclear Equipment division Beijing Institute of Nuclear EngineeringChina Nuclear Power Engineering Co.Ltd.Beijing 100840China department of Materials Science School of Mechanical EngineeringShenyang UniversityShenyang 110044China

B_(4)c/Al composites are widely utilized as neutron absorbing materials for the storage and transportation of spent nuclear *** order to improve the high-temperature mechanical properties of B_(4)c/Al composites,in-situ nano-Al_(2)O_(3)was introduced utilizing oxide on Al powder *** this study,the Al_(2)O_(3)content was adjusted by utilizing spheroid Al powder with varying diameters,thereby investigating the impact of Al_(2)O_(3)content on the tensile properties of(B_(4)c+Al_(2)O_(3))/Al *** was found that the pinning effect of Al_(2)O_(3)on the grain boundaries could hinder the recovery of dislocations and lead to dislocation accumulation at high *** the result,with the increase in Al_(2)O_(3)content and the decrease in grain size,the high-temperature strength of the composites increased *** finest Al powder used in this investigation had a diameter of 1.4μm,whereas the resultant composite exhibited a maximum strength of 251 MPa at room temperature and 133 MPa at 350℃,surpassing that of traditional B_(4)c/Al composites.

关键词： Al matrix composites neutron absorbing materials (B_(4)c+Al_(2)O_(3))/Al composites high-temperature strength

construction of 2d/2d Ti_(3)c_(2)T_(x)MXene/cdS heterojunction with photothermal effect for efficient photocatalytic hydrogen production

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journal of Materials Science & Technology 2024年第4期171卷 1-9页

作者： T.y.huang z.yang S.y.yang z.h.dai y.j.liu j.h.liao G.y.zhong z.j.Xie y.P.Fang S.S.zhang Key laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China School of chemical Engineering and Energy Technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

The insensitivity of semiconductors to visible and infrared light is a key constraint on the utilization of light energy in photocatalytic *** photocatalysts with full-spectrum absorption through surface engineering is an effective approach to fully harnessing light energy in semiconductor ***,a novel stable Ti_(3)c_(2)T_(x)MXene/cdS heterojunction catalyst is obtained by in-situ epitaxial growth of two-dimensional(2d)cdS nanosheets on 2d MXene interface via a solvothermal *** exceptional light absorption properties of MXene confer outstanding full-spectrum driven photocat-alytic hydrogen evolution capability upon the heterogeneous *** unique 2d/2d structure effectively mitigated the recombination of photogenerated carriers,enhancing the photocatalytic performance of the ***,the composite catalyst exhibits a significantly higher surface temperature of 80.4℃under visible light irradiation at an intensity of 0.1 w/cm^(2),which is 1.84 times higher than that of *** irradiation of visible and near infrared light,the composite catalyst with photothermal ef-fect demonstrates a remarkable hydrogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is 7.2 times higher than that of cdS *** study introduces a novel approach for constructing full-spectrum absorption catalysts and expands the application of the photothermal effect in photocatalytic hydrogen evolution research.

关键词： Two-dimensional structure heterostructure Photothermal effect Photocatalyst hydrogen evolution

STcF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 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.Barnyakov V.Blinov V.Bobrovnikov d.Bodrov A.Bogomyagkov A.Bondar I.Boyko 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.jing 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.lyu X.R.lyu 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.Ouyang 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.Pyata 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 Physics Novosibirsk 630090Russia cAS Key laboratory of Theoretical Physics 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 Polytechnique 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 Physics 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 Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China jilin University Changch

The superτ-charm facility(STcF)is an electron–positron collider proposed by the chinese particle physics *** 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 asymmetry 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 physics beyond the Standard *** STcF project in china is under development with an extensive R&d *** document presents the physics opportunities at the STcF,describes conceptual designs of the STcF detector system,and discusses future plans for detector R&d and physics case studies.

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

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.Abeynayake 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 january,2019 to May,2023 by the Polio Regional Reference laboratory,Sri ***:This retrospective study analyzed all stool samples received under the acute flaccid paralysis(AFP)and immunodeficient vaccine-derived poliovirus(VdPV)surveillance at Polio Regional Reference laboratory,Sri lanka from january,2019 to May,*** results of the testing methodologies were extracted from the laboratory data system,i.e.,poliovirus virus isolation,intra-typic differentiation/VdPV real time reverse transcriptase polymerase chain reaction(ITd/VdPV rRTPcR)and sequencing,along with the data on timing of reporting results,stool adequacy and *** was analyzed 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 years of the study,the non-polio AFP detection rate was>1/100000 in children aged less than 15 years,whereas stool adequacy rate was>80%.All results were reported within 14 days of receipt,ensuring timely reporting as per global ***:The Polio Regional Reference laboratory,Sri lanka plays 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

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-Reynoso 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 analysis to estimate the pure and synergistic 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 synergic 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 Analysis

Four late-type Galaxies with double Radio lobes and Properties of Such Galaxies

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Research in Astronomy and Astrophysics 2024年第4期24卷 84-90页

作者： z.S.yuan X.y.Gao z.l.wen j.l.han national Astronomical Observatories Chinese Academy of SciencesBeijing 100101China cAS Key laboratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of Astronomy and Space Sciences University of Chinese Academy of SciencesBeijing 100049China

The triggering mechanism for radio lobes from late-type galaxies is not fully *** samples are desired for a thorough investigation and *** utilizing the optical data from the newly released dark Energy Spectroscopic Instrument imaging surveys and the radio sources from the nRAO VlA Sky Survey and the Faint Images of the Radio Sky at Twenty-centimeter,we identify four late-type Galaxies with double Radio lobes(la GRls):j0217-3645,j0947+6220,j1412+3723 and j1736+*** previously known la GRls,we confirm the correlation between radio power P_(1.4Ghz)and stellar mass M_(*)of host ***(25/35)la GRls belong to the blue cloud galaxies,while the newly identified cases in this work are located within the region of the red *** find a clear correlation between the differential radio power,i.e.,the offset from the P_(1.4Ghz)-M_(*)relation,and the galaxy color,indicating that bluer galaxies at a fixed M_(*)tend to host more powerful radio ***,the majority(31/36)of la GRls are either located in a galaxy group or displaying a disturbed *** suggest that all of the galaxy mass,color and surrounding environment could play important roles in triggering radio lobes in late-type galaxies.

关键词： galaxies:active galaxies:jets galaxies:spiral radio continuum:galaxies

hI in high Gas-phase Metallicity dwarf Galaxy wISEA j230615.06+143927.9

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Research in Astronomy and Astrophysics 2024年第1期24卷 292-299页

作者： yan Guo c.Sengupta T.c.Scott P.lagos y.luo Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China School of Astronomy and Space Sciences University of Science and Technology of ChinaHefei 230026China Institute of Astrophysics and Space Sciences(IA Porto) Rua das Estrelas4150-762PortoPortugal

we present resolved Giant Metrewave Radio Telescope h I observations of the high gas-phase metallicity dwarf galaxy wISEA j230615.06+143927.9(z = 0.005)(hereafter j2306) and investigate whether it could be a Tidal dwarf Galaxy(TdG) candidate. TdGs are observed to have higher metallicities than normal dwarfs. j2306 has an unusual combination of a blue g-r color of 0.23 mag, irregular optical morphology and high-metallicity(12 +log(O/h) = 8.68 ± 0.14), making it an interesting galaxy to study in more detail. we find j2306 to be an h I rich galaxy with a large extended, unperturbed rotating h I disk. Using our h I data we estimated its dynamical mass and found the galaxy to be dark matter(dM) dominated within its h I radius. The quantity of dM, inferred from its dynamical mass, appears to rule out j2306 as an evolved TdG. A wide area environment search reveals j2306 to be isolated from any larger galaxies which could have been the source of its high gas metallicity. Additionally, the h I morphology and kinematics of the galaxy show no indication of a recent merger to explain the *** detailed optical spectroscopic observations of j2306 might provide an answer to how a seemingly ordinary irregular dwarf galaxy achieved such a high level of metal enrichment.

关键词： galaxies:abundances galaxies:dwarf galaxies:irregular radio lines:galaxies radio lines:ISM

discovery of new MAX-phase-like layered ternary carbide V_(8)P_(6)c:crystal structure,thermal expansion,and elastic properties

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journal of Materials Science & Technology 2024年第7期174卷 55-62页

作者： h.X.chen l.Sheng z.l.zhang X.c.wen d.l.yang X.y.ye P.Q.dai School of Materials Science and Engineering Fujian University of TechnologyFuzhou 350118China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of ScienceBeijing 100049China Fujian Provincial Key laboratory of Advanced Materials Processing and Application Fuzhou 350118China State Key laboratory of Structural chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

due to the laminated structure,MAX phases and MAX-phase-like compounds possess outstanding dam-age tolerance capability with good thermal/electrical conductivity and other charming functional prop-erties,showing a bright future for structural-functional ***,a new MAX-phase-like ternary car-bide V_(8)P_(6)c with layered characteristics was *** to the alternate stacking of hexagonal-arranged M/A/X atom layers in MAX phases,V_(8)P_(6)c has a layered structure formed by a repeated stacking of the slabs consisting of V_(6)c-octahedrons and VP 6-distorted-octahedrons in three-atomic layers *** thermal expansion anisotropy was revealed,with the thermal expansion coefficients(TEcs)along a-axis,c-axis,and the average value,equal toα_(a)=8.55(5)μK^(−1),α_(c)=10.23(5)μK^(−1),andα_(l)=9.14(5)μK^(−1),*** dilation along the c-axis was mainly dominated by out-plane V-P bonds be-tween layered *** to the pressure-dependent lattice parameters,the polycrystalline bulk modulus(B_(0)=185(9)GPa)and high compressibility anisotropy factor(B_(a)/B_(c)=1.64)was ***-while,the second-order elastic constants were calculated,and the elastic moduli,E=303 GPa,B=198 GPa,G=122 GPa,andν=0.246,were *** the weak connection between layer slabs by out-plane V1-P bond was revealed by the bond stiffness model,with a bond stiffness close to the M-A bond in MAX ***,good damage tolerance capability was predicted according to Paugh’s ratio(G/B=0.616)and cauchy pressure(P_(a)=0 GPa,P_(c)=-7.5 GPa),even better than those of typical MAX *** discovery of V_(8)P_(6)c provides a new member of MAX-phase-like damage-tolerant ceramic with relatively low density,moderate thermal expansion,and anisotropic compressibility,and the unique lay-ered structure is inspiring for exploring new layered ternary ceramics.

关键词： new ternary carbide MAX phase Thermal expansion Elastic constants Anisotropy

Rescattering of stimulated Raman side scattering in nonuniform plasmas

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Matter and Radiation at Extremes 2024年第5期9卷 68-76页

作者： S.Tan Q.wang y.chen w.B.yao c.z.Xiao j.F.Myatt School of Physics and Electronics Hunan UniversityChangsha 410082China Institute of Applied Physics and computational Mathematics Beijing 100094China School of Electrical and Information Engineering Anhui University of Science and TechnologyHuainanAnhui 232001China department of Electrical and computer Engineering University of Alberta9211116 St.NWEdmontonAlberta T6G 1H9Canada

Rescattering of stimulated Raman side scattering(SRSS)is observed for the first time via two-dimensional(2d)particle-in-cell(PIc)*** construct a theoretical model for the rescattering process,which can predict the region of occurrence of mth-order SRSS and estimate its *** rescattering process is identified by the 2d PIc simulations under typical conditions of a direct-drive inertial confinement fusion *** electrons produced by second-order SRSS propagate nearly perpendicular to the density gradient and gain nearly the same energy as in first-order SRSS,but there is no cascade acceleration to produce superhot *** studies for a wide range of ignition conditions show that SRSS and associated rescatterings are robust and important processes in inertial confinement fusion.

关键词： nonuniform acceleration scattering