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Acta Metallurgica sinica(english Letters) 2024年第2期37卷 255-265页

作者： x.y.yue s.y.peng x.Zhang c.N.he y.Z.Tian Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China school of Materials science and engineering and Tianjin Key Laboratory of composite and Functional Materials Tianjin UniversityTianjin300350China Research centre for Metallic Wires Northeastern UniversityShenyang110819China

A cu-10wt%Fe composite was prepared through hot-pressed sintering,and the material was subsequently solution *** hot-pressed sintered and solution treated materials were rolled and *** prec.p.tation behavior and performance changes were systematically studied by using scanning electron microsc.p. and transmission electron *** contrast to the hot-pressed sintered specimen,the solution treatment significantly affects the thermal stability and properties of the cu-10wt%Fe *** cu-10wt%Fe composite was prepared after solid solution,cold rolling and aging at 773 K for 1 h,and it obtained excellent tensile strength of 494 Mpa,uniform elongation of 16.3%,electrical conductivity of 51.1%IAcs and softening temperature of 838 *** for the distinct difference in thermal stability and properties between hot-pressed sintered and solution treated specimens were *** findings provide a theoretical basis for designing high-performance cu-based in-situ composites by post treatment.

关键词： cu-Fe composite hot-pressed sintering Thermal stability strength Electrical conductivity

cognition on oxidation behavior of Ni-based superalloy Gh4742 when exposed to water vapor

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Journal of Materials science & Technology 2024年第7期174卷 15-22页

作者： h.xu s.F.yang E.h.Wang c.y.Guo y.s.Liu x.M.hou y.L.Zhang state Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Institute for carbon Neutrality University of Science and Technology BeijingBeijing 100083China

The oxidation behavior of Ni-based superalloy Gh4742 exposed to water vapor was investigated at 900-1100℃for 50 h in Ar+20%h_(2)O,with Ar+20%O_(2)included for *** presence of h_(2)O is adverse to formation of continuous cr_(2)O_(3)oxide layer but contributes to generation of big *** on this,Ni^(2+)and co^(2+)are more easily to diffuse towards the outermost oxide layer(OOL),forming non-protective Ni-and co-rich oxides with high *** leads to a higher weight gain in Ar+20%h_(2)O than that in Ar+20%O_(2).At elevated temperatures,the spallation of oxide scale occurs while the consumption of cr is reduced in Ar+20%h_(2)O,and the contents of Ni-and co-rich oxides at this moment are reduced in the *** oxidation mechanism was also discussed.

关键词： Gh4742 superalloy h_(2)O Diffusion Oxidation Mechanism

Immediate implantation of ultrafine fiber slow-release system based on cell electrospinning to induce osteogenesis of mesenchymal stem cells

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Regenerative Biomaterials 2024年第2期3卷 76-87页

作者： Tao Lu Long yang Zhuoyang Li yin Liu shun'en xu chuan ye Department of Orthopaedics The Affliated Hospital of Guizhou Medical UniversityGuiyang 550004China Department of Orthopaedics The First People's Hospital of GuiyangGuiyang 550004China center for Tissue engineering and stem cell Research Guizhou Medical UniversityGuiyang 550004China Department of Otolaryngology head and Neck surgery Xinqiao HospitalArmy Medical University(Third Military Medical University)Chongqing 400037China Department of Dental implant Stomatological Hospital of GuiyangGuiyang 550000China

This study presents the development and evaluation of a poly(3-hydroxybutyrate-co-4-hydroxybutyrate)(p34hB)ultrafine fiber slow-release system for in vivo osteogenic induction of human umbilical cord mesenchymal stem cells(hUcMscs).Utilizing dual-nozzle and cell electrospinning techniques,the system enc.p.ulates L-ascorbic acid-2-phosphate magnesium(Asp),βB-glycerophosphate sodium and dexamethasone(DEx)within the'fbers,ensuring sustained osteogenic *** scaffold's morphology,characterization,hydrophilicity,mechanical properties and cellular behavior were *** subcutaneous implantation in rabbits was con-ducted to observe its ectopic osteogenic induction *** fabricated p34hB ultrafine fiber slow-release *** ization *** distribution of hUcMscs and inducing components within the scaffold,with no chemical reactions affecting the active *** vitro tests showcased a prolonged release of DEx and Asp,while biocompatibility assays highlighted the scaffold's suitability for cellular *** Red,type I collagen,and osteopontin(OpN)staining verifed the scaffold's potent osteogenic induction effect on ***,immediate implantation into New Zealand White rabbits led to significant new bone formation within 8 *** findings underscore the system's potential for immediate in vivo implantation without prior in vitro induction,marking a promising advancement in bone tissue engineering.

关键词： bone tissue engineering cell electrospinning in vivo induction immediate implantation biomaterials

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 *** exc.p.ional light absorption properties of Mxene confer outstanding full-spectrum driven photocat-alytic hydrogen evolution c.p.bility upon the heterogeneous *** unique 2D/2D structure effectively mitigated the recombination of photogenerated carriers,enhancing the photocatalytic.p.rformance 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

The OscLV2s-OscRN1 co-rec.p.or regulates grain shape in rice

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Journal of Genetics and Genomics 2024年第7期51卷 691-702页

作者： xingxing Li Meng-en Wu Juncheng Zhang Jingyue xu yuanfei Diao yibo Li National Key Laboratory of crop Genetic Improvement and National centre of plant Gene Research(Wuhan) Huazhong Agricultural UniversityWuhanHubei 430070China hubei hongshan Laboratory WuhanHubei 430070China

The highly conserved cLV–WUs negative feedback pathway plays a decisive role in regulating stem cell maintenance in shoot and floral meristems in higher plants,including Arabidopsis,rice,maize,and ***,we find significant natural variations in the OscLV2c,OscLV2d,and OscRN1 loci in a genome-wide association study of grain shape in ***2a,OscLV2c,OscLV2d,and OscRN1 negatively regulate grain length–width ratio and show distinctive geographical distribution,indica–japonica differentiation,and artificial selection ***,OscLV2a and OscRN1 interact biochemically and genetically,suggesting that the two components function in a complex to regulate grain shape of ***,the genetic contributions of the haplotypes combining OscLV2a,OscLV2c,and OscRN1 are significantly higher than those of each single gene alone in controlling key yield *** findings identify two groups of rec.p.or-like kinases that may function as distinct co-rec.p.ors to control grain size in rice,thereby revealing a previously unrecognized role of the cLV class genes in regulating seed development and proposing a framework to understand the molecular mechanisms of the cLV–WUs pathway in rice and other crops.

关键词： Rice Grain shape OscLV2s OscRN1 Natural variations Indica-japonica differentiation

Discovery of new MAx-phase-like layered ternary carbide V_(8)p_(6)c:crystal structure,thermal expansion,and elastic.p.operties

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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 c.p.bility 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 c.p.bility 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.p.ovides 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

Effect of radiative loss mechanisms on FIR thermometric.p.rameters of Nd^(3+)-doped lithium tellurite glasses

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Journal of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： c.y.Morassuti A.p.L silva L.A.O.Nunes s.M.Lima L.h.c.Andrade Optical and photothermal spectrosc.p. Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Archer Information Technology center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of physics of são carlos University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tellurite glasses are promising materials for thermometers based on the fluorescence intensity ratio(FIR)***,at high Nd^(3+)concentrations,energy transfer(ET)processes such as optical reabsorption and cross-relaxation can affect the Nd^(3+)emission,which has been little explored in the ***,the present work investigated the use of Nd^(3+)-doped tellurite glass(samples doped with Nd^(3+)at 0.2 mol%,0.5 mol%,2.0 mol%,and 4.0 mol%)in fluorescence thermometers,in the temperature range from 299 to 371 *** results indicate a strong dependence of the FIR parameters on the Nd^(3+)concentration,due to changes in the emission band profiles caused by optical reabsorption of the Nd^(3+)emissions and cross-relaxation processes.A decrease of the relative sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for samples doped with higher amounts of Nd^(3+).The maximum relative sensitivity at 299 K is 3.00%/K,which is the highest value among the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tellurite glass Fluorescence intensity ratio Optical thermometry Judd-Ofelt Rare earths

sTcF conc.p.ual 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 conc.p.ual 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 conc.p.ual design

Exogenous testosterone therapy on choroid in androgen deficiency

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International Journal of Ophthalmology(english edition) 2024年第8期17卷 1489-1494页

作者： Volkan yeter Nurullah Koçak Merve Kalyoncu Ramazan Aşçi Nurşen Aritürk Department of Ophthalmology Ondokuz Mayıs UniversitySamsun 55139Turkey Department of Urology Ondokuz Mayıs UniversitySamsun 55139Turkey

AIM:To investigate the effects of exogenous testosterone treatment on the choroidal parameters in patients with androgen ***:Right eyes of 24 patients with androgen deficiency and 31 healthy volunteers were included in the *** eyes were scanned for subfoveal choroidal thickness(sFcT),choroidal vascularity index(cVI),choroidstromal area(c-sA),choroid-luminal area(c-LA),choroidstromal to luminal area ratio(csLR),and the choroidal parameters within central 1500μm of the macula(cVI1500,c-LA1500,c-sA1500,and csLR1500)by enhanced-depth imaging optical coherence tomography(EDI-OcT)at baseline,6th and 18th weeks of the exogenous testosterone ***:The mean sFcT values of the androgen deficient groups and healthy controls were 307.7±27.0 and 303.2±37.2μm(p=0.8).however,cVI,c-sA,csLR,cVI1500,c-LA1500,and csLR1500 were significantly different between the groups(all phe 6th week visit after exogenous testosterone treatment,sFcT,cVI,c-LA,and c-sA were significantly decreased,and these parameters returned to baseline levels at the 18th-week visit(all p>0.05).however,cVI1500 and LA1500 significantly increased at the end of the follow-up period(pcONcLUsION:cVI is lower in androgen-deficient patients than in healthy *** alterations in the choroid during the testosterone peak are transient in the treatment of patients with androgen ***,the increase in cVI within the central 1500μm of the macula persists even after 4mo.

关键词： testosterone androgen deficiency choroid vascularity index

Decomposition solutions and Bäcklund transformations of the B-type and c-type Kadomtsev-petviashvili equations

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communications in Theoretical physics 2024年第6期76卷 34-44页

作者： xiazhi hao s y Lou college of science Zhejiang University of TechnologyHangzhou 310014China school of physical science and Technology Ningbo UniversityNingbo 315211China

This paper introduces a modified formal variable separation approach,showcasing a systematic and notably straightforward methodology for analyzing the B-type Kadomtsev-petviashvili(BKp)*** the application of this approach,we successfully ascertain decomposition solutions,Bäcklund transformations,the Lax pair,and the linear superposition solution associated with the aforementioned ***,we expand the utilization of this technique to the c-type Kadomtsev-petviashvili(c.p.equation,leading to the derivation of decomposition solutions,Bäcklund transformations,and the Lax pair specific to this *** results obtained not only underscore the efficacy of the proposed approach,but also highlight its potential in offering a profound comprehension of integrable behaviors in nonlinear ***,this approach demonstrates an efficient framework for establishing interrelations between diverse systems.

关键词： decomposition solution Backlund transformation Lax pair linear superposition solution