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Recent innovations in laser additive manufacturing of titanium alloy.

International Journal of Extreme Manufacturing 2024年第3期6卷 2-37页

作者： Jinlong Su Fulin Jiang Jie Teng Lequn Chen Ming y.n Guillermo Requena Lai-chang Zhang y.Morris Wang Ily. V Okulov Hongmei Zhu Chaolin Tan College of Materials Science and Engineering Hunan UniversityChangsha 410082People’s Republic of China Singapore Institute of Manufacturing Technology.SIM Tech) Agency for ScienceTechnology and Research(A∗STAR)5 Cleantech LoopSingapore 636732Singapore Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Institute of Materials Research German Aerospace Center(DLR)Linder Höhe51147 CologneGermany Centre for Advanced Materials and Manufacturing Edith Cowan University270 Joondalup DriveJoondalupPerthWestern Australia 6027Australia Department of Materials Science and Engineering University of CaliforniaLos AngelesCA 900095United States of America Leibniz Institute for Materials Engineering-IWT Badgasteiner Str.328359 BremenGermany Faculty.of Production Engineering University of BremenBadgasteiner Str.128359 BremenGermany Key.Laboratory.of Hunan Province of Equipment Safety.Service Technology.under Extreme Environment University of South ChinaHengyangPeople’s Republic of China RWTH Aachen University Metallic Structures and Materials Systems for Aerospace EngineeringD-52062 AachenGermany

Titanium(Ti)alloy. are widely.used in high-tech fields like aerospace and biomedical *** additive manufacturing(LAM),as an innovative technology.is the key.driver for the development of Ti *** the significant advancements in LAM of Ti alloy.,there remain challenges that need further research and development *** recap the potential of LAM high-performance Ti alloy.this article sy.tematically.reviews LAM Ti alloy. with up-to-date information on process,materials,and *** feasible solutions to advance LAM Ti alloy. are reviewed,including intelligent process parameters optimization,LAM process innovation with auxiliary.fields and novel Ti alloy. customization for *** auxiliary.energy.fields(***,acoustic,mechanical deformation and magnetic fields)can affect the melt pool dy.amics and solidification behaviour during LAM of Ti alloy.,altering microstructures and mechanical *** kinds of novel Ti alloy. customized for LAM,like peritecticα-Ti,eutectoid(α+β)-Ti,hy.rid(α+β)-Ti,isomorphousβ-Ti and eutecticβ-Ti alloy. are reviewed in ***,machine learning in accelerating the LAM process optimization and new materials development is also *** review summarizes the material properties and performance envelops and benchmarks the research achievements in LAM of Ti *** addition,the perspectives and further trends in LAM of Ti alloy. are also highlighted.

关键词： additive manufacturing titanium alloy. auxiliary.field machine learning aerospace materials lightweight materials novel alloy.

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Recent progress on the sy.thesis of defective UiO-66 for thermal cataly.is

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Nano Research 2024年第10期17卷 8653-8670页

作者： Qing Feng Caoy. y.ng Lin chang Guodong Li Zhiy.ng Tang CAS Key.Laboratory.of Nanosy.tem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China

Zirconium terephthalate UiO-66 has aroused great interest in cataly.is since it exhibits significant flexibility.and compatibility.for accommodating a high number of defects as well as exceptional thermal and chemical *** now,many.works have focused on the modulations of the Zr6-oxo clusters in UiO-66 in terms of diverse sy.thesis,advanced characterizations,and their cataly.ic *** achieve high cataly.ic efficiency.it is still highly.desired for rationally.constructing and modulating the Zr6-oxo clusters with exposed cataly.ic sites and diverse microenvironments for advanced *** this review,we provide a comprehensive summary.of recent progress on the sy.thesis of defective UiO-66,qualitative and quantitative characterizations,as well as a logical overview of heterogeneous cataly.ic applications over the past few ***,the outlooks for the research paradigm of defective UiO-66 are discussed.

关键词： defective UiO-66 de novo sy.thesis post-sy.thetic treatment characterization thermal cataly.is

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Biomineralization and mineralization using microfluidics:A comparison study

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第2期16卷 661-669页

作者： y.ng Xiao Xiang He Guoliang Ma chang Zhao Jian Chu Hanlong Liu Key.Laboratory.of New Technology.for Construction of Cities in Mountain Area Chongqing UniversityChongqing400045China State Key.Laboratory.of Coal Mine Disaster Dy.amics and Control Chongqing UniversityChongqing400045China School of Civil Engineering Chongqing UniversityChongqing400045China School of Civil and Environmental Engineering Nanyang Technological UniversitySingapore

Biomineralization through microbial process has attracted great attention in the field of geotechnical engineering due to its ability.to bind granular materials,clog pores,and seal *** minerals formed by.biomineralization are generally.the same as that by.mineralization,their mechanical behaviors show a significant *** study.aims to figure out the differences between biomineralization and mineralization processes by.visualizing and tracking the formation of minerals using *** biomineralization and mineralization processes occurred in the y.shaped sandcontaining microchip that mimics the underground sand *** from different areas in the reaction microchannel of microchips were captured to directly.compare the distribution of *** size and numbers from different reaction times were measured to quantify.the differences between biomineralization and mineralization processes in terms of cry.tal *** showed that the cry.tals were precipitated in a faster and more uncontrollable manner in the mineralization process than that in the biomineralization process,given that those two processes presented similar precipitation *** addition,a more heterogeneous distribution of cry.tals was observed during the biomineralization *** precipitation behaviors were further explained by.the classical nucleation cry.tal growth *** present microfluidic tests could advance the understanding of biomineralization and provide new insight into the optimization of biocementation technology.

关键词： Microbially.induced carbonate precipitation (MICP) Biocementation Cry.tal Calcium carbonate Nucleation

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Solution of the Center Problem for a Class of Poly.omial Differential Sy.tems

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Acta Mathematica Sinica,English Series 2024年第7期40卷 1685-1696页

作者： chang Jian Liu Jaume Llibre Rafael Ramírez Valentín Ramírez School of Mathematics(Zhuhai) Sun Yat-sen UniversityZhuhai519086P.R.China Departament de Matemàtiques Universitat Autònoma de Barcelona08193BellaterraBarcelonaCataloniaSpain Departament d’Enginy.ria Informàtica i Matemàtiques Universitat Rovira i VirgiliAvinguda dels Paiïsos Catalans 2643007TarragonaCataloniaSpain

Consider the poly.omial differential sy.tem of degree m of the form x=-y.1+μ(a_(2)x-a_(1)y.)+x(v(a_(1)x+a_(2)y.+Ω_(m-1)(x,y.),y.x(1+μ(a_(2)x-a_(1)y.)+y.v(a_(1)x+a_(2)y.+Ω_(m-1)(x,y.),whereμandνare real numbers such that(μ^(2)+v^(2))(μ+v(m-2))(a_(1)^(2)+a_(2)^(2))≠m>2 andΩ_(m−1)(x,y.is a homogenous poly.omial of degree m−1.A conjecture,stated in *** Equations 2019,suggests that whenν=1,this differential sy.tem has a weak center at the origin if and only.if after a convenient linear change of variable(x,y.→(X,y.the sy.tem is invariant under the transformation(X,y.t)→(−X,y.−t).For every.degree m we prove the extension of this conjecture to any.value ofνexcept for a finite set of values ofμ.

关键词： Center problem poly.omial differential sy.tem

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Association of accelerometer-measured sleep duration and different intensities of phy.ical activity.with incident ty.e 2 diabetes in a population-based cohort study

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Journal of Sport and Health Science 2024年第2期13卷 222-232页

作者： Xiny. Jin y.lin Chen Hongliang Feng Mingqing Zhou Joey.W.y.chang y.ping Liu Alice Pik Shan Kong Xiao Tan y.n-Kwok Wing y.nnis y.n Liang Jihui Zhang Guangdong Cardiovascular Institute Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510080China Guangdong Provincial Key.Laboratory.of Coronary.Heart Disease Prevention Guangdong Cardiovascular InstituteGuangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou 510080China School of Medicine South China University of TechnologyGuangzhou 510641China Center for Sleep and Circadian Medicine The Affiliated Brain Hospital of Guangzhou Medical UniversityGuangzhou 510180China The Second School of Clinical Medicine Southern Medical UniversityGuangzhou 510282China Guangdong Mental Health Center Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou 510120China Li Chiu Kong Family.Sleep Assessment Unit Department of PsychiatryFaculty of MedicineThe Chinese University of Hong KongHong Kong 999077China Department of Psy.hiatry Faculty of MedicineThe Chinese University of Hong KongHong Kong 999077China Department of Medicine and Therapeutics Faculty of MedicineThe Chinese University of Hong KongHong Kong 999077China Department of Medical Sciences Uppsala UniversityUppsala 75185Sweden Department of Big Data in Health Science Zhejiang University School of Public HealthHangzhou 310058China Key.Laboratory.of Neurogenetics and Channelopathies of Guangdong Province and the Ministry.of Education of China Guangzhou 510260China

Purpose:The aim of the current study.was to investigate the association of accelerometer-measured sleep duration and different intensities of phy.ical activity.PA)with the risk of incident ty.e 2 diabetes in a population-based prospective cohort ***:Altogether,88,000 participants(mean age=62.2±7.9 y.ars,mean±SD)were included from the UK *** duration(short:y.normal:6-8 h/day.long:>8 h/day.and PA of different intensities were measured using a wrist-won accelerometer over a 7-day.period between 2013 and *** was classified according to the median or World Health Organization-recommendation:total volume of PA(high,low),moderate-to-vigorous PA(MVPA)(recommended,not recommended),and light-intensity.PA(high,low).Incidence of ty.e 2diabetes was ascertained using hospital records or death ***:During a median follow-up of 7.0 y.ars,1615 incident ty.e 2 diabetes cases were *** with normal sleep duration,short(hazard ratio(HR)=1.21,95%confidence interval(95%CI):1.03-1.41)but not long sleep duration(HR=1.01,95%CI:0.89-1.15)was associated with excessive ty.e 2 diabetes *** increased risk among short sleepers seems to be protected against by.*** with normal sleepers with high or recommended PA,short sleepers with low volume of PA(HR=1.81,95%CI:1.46-2.25),not recommended(below the World Health Organization-recommended level of)MVPA(HR=1.92,95%CI:1.55-2.36),or low light-intensity.PA(HR=1.49,95%CI:1.13-1.90)had a higher risk of ty.e 2 diabetes,while short sleepers with a high volume of PA(HR=1.14,95%CI:0.88-1.49),recommended MVPA(HR=1.02,95%CI:0.71-1.48),or high light-intensity.PA(HR=1.14,95%CI:0.92-1.41)did ***:Accelerometer-measured short but not long sleep duration was associated with a higher risk of incident ty.e 2 diabetes.A higher level of PA,regardless of intensity.potentially.ameliorates this excessive risk.

关键词： Light phy.ical activity Sleep duration Triaxial accelerometer Ty.e 2 diabetes UK Biobank

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Microstructure Evolution and Nanomechanical Behavior of Micro-Area in Molten Pool of Selective Laser Melting(CoCrNi)_(82)Al_(9)Ti_(9)High-Entropy.Alloy

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Acta Metallurgica Sinica(English Letters) 2024年第6期37卷 1019-1033页

作者： Hong-Wei Zhang Li-Wei Lan Zhe-y. y.ng chang-Chun Li Wen-Xian Wang College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan030024China Ministry.of Education Key Laboratory of Interface Science and Engineering in Advanced MaterialsTaiyuan University of TechnologyTaiyuan030024China Shanxi-Zhejiang University.New Materials and Chemical Research Institute Taiyuan030032China

In this work,the phase evolution mechanism and nanomechanical properties of(CoCrNi))(82)Al_(9)Ti_(9)high-entropy.alloy.HEA)prepared by.selective laser melting(SLM)in the molten pool were *** HEA contains multiple primary.elements and undergoes high-temperature gradient and rapid cooling during *** leads to significant inhomogeneity.of nano-scale microstructure characteristics and instability.of *** optimizing process parameters,the microstructure evolution at the optimal parameter volume energy.density.of 440 J/mm^(3)was studied.A phase transition from BCC to FCC occurred in the melt *** the micro-area of the melt pool results in a temperature rise and the combustion-induced loss of Al ***,the Ni element content increases significantly.outside the melt *** process enhances the phase stability.of FCC and facilitates phase ***,rapid cooling leads to the formation of distinctive ultrafine equiaxial cry.tals inside the melt pool,accompanied by.the generation of intracry.talline needle-like nano-scale *** the melt pool,the accumulation of energy.results in the formation of coarse ***,the nano-hardness inside the molten pool is remarkably.high at 11.79 GPa,while the outside the molten pool is reduced to 9.58 *** the fracture toughness outside the melt pool also *** with inside the melt pool,the residual stress outside the melt pool changed from compressive to tensile stress and decreased from 603.28 to 322.84 MPa.

关键词： High-entropy.alloy. Selective laser melting Microstructure evolution Nanoindentation

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SMXL5 attenuates strigolactone signaling in Arabidopsis thaliana by.inhibiting SMXL7 degradation

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Molecular Plant 2024年第4期17卷 631-647页

作者： Qingtian Li Haiy.ng y. Wenwen chang Sunhy.n chang Michael Guzman Lionel Faure Eva-Sophie Wallner Heqin y.n Thomas Greb Lei Wang Ruifeng y.o David C.Nelson Department of Botany.and Plant Sciences University of CaliforniaRiversideRiversideCA 2521USA y.zhouwan National Laboratory Sanya 572025China Hainan Seed Industry.Laboratory Sanya 57205China State Key.Laboratory.of Chemo/Biosensing and Chemometrics Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental RegulationCollege of BiologyHunan UniversityChangsha 410082China Key.Laboratory.of Seed Innovation Center for Agricultural Resources ResearchInstitute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuangHebei 050021China University.of Chinese Academy.of Sciences Beijing 10004China School of the Sciences Biology DivisionTexas Woman’s UniversityDentonTX 76204USA Centre for Organismal Studies(COS) Heidelberg University6120 HeidelbergGermany

Hormone-activated proteoly.is is a recurring theme of plant hormone signaling *** strigolactone signaling,the enzy.e receptor DWARF14(D14)and an F-box protein,MORE AXILLARy.GROWTH2(MAX2),mark SUPPRESSOR OF MAX21-LIKE(SMXL)family.proteins SMXL6,SMXL7,and SMXL8 for rapid *** of these transcriptional corepressors initiates downstream growth *** homologous proteins SMXL3,SMXL4,and SMXL5,however,are resistant to MAX2-mediated *** discovered that the smxl4 smxl5 mutant has enhanced responses to ***5 attenuates strigolactone signaling by.interfering with AtD14-SMXL7 ***5 interacts with AtD14 and SMXL7,providing two possible way. to inhibit SMXL7 ***5 function is partially.dependent on an ethy.ene-responsive-element binding-factor-associated amphiphilic repression(EAR)motif,which ty.ically.mediates interactions with the TOPLESS family.of transcriptional ***,we found that loss of the EAR motif reduces SMXL5-SMXL7 interactions and the attenuation of strigolactone signaling by.*** hy.othesize that integration of SMXL5 into heteromeric SMXL complexes reduces the susceptibility.of SMXL6/7/8 proteins to strigolactone-activated degradation and that the EAR motif promotes the formation or stability.of these *** mechanism may.provide a way.to spatially.or temporally.fine-tune strigolactone signaling through the regulation of SMXL5 expression or translation.

关键词： Arabidopsis ty.ically inhibiting

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Wide‑field swept‑source OCT angiography.of the periarterial capillary.free zone before and after anti‑VEGF therapy.for branch retinal vein occlusion

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Ey. and Vision 2024年第2期10卷 31-40页

作者： Weny. Tang Wei Liu Jingli Guo Lili Zhang Gezhi Xu Key.n Wang Qing chang Department of Ophthalmology Eye and ENT Hospital of Fudan University83 Fenyang RoadShanghai 200031China Shanghai Key.Laboratory.of Visual Impairment and Restoration Fudan UniversityShanghaiChina NHC Key.Laboratory.of My.pia(Fudan University. Laboratory of MyopiaChinese Academy of Medical SciencesShanghaiChina

Background:The aim of the study.was to investigate the changes in the periarterial capillary.free zone(paCFZ)after anti-vascular endothelial growth factor(VEGF)therapy.in patients with branch retinal vein occlusion(BRVO)by.widefield swept-source optical coherence tomography.angiography.SS-OCTA)and assess their associations with clinical ***:In this retrospective observational study.of 54 treatment-naive BRVO patients with macular edema,we reviewed the findings of 12×12 mm^(2)SS-OCTA at baseline,3,6,and 12 months after intravitreal ranibizumab *** paCFZ and major retinal artery.areas were measured on SS-OCTA *** paCFZ area to artery.area(P/A)ratio was ***:The paCFZ areas and P/A ratios of first-and second-order arteries were significantly.greater in BRVO ey.s than in contralateral ey.s(all Py.areas(P=0.20 and 0.25,respectively..The paCFZ areas and P/A ratios decreased significantly.at 3,6,and 12 months after anti-VEGF therapy.all Py.correlated with the baseline best-corrected visual acuity.BCVA),central retinal thickness,and their improvements at 3,6,and 12 months(all Py.associated with the final BCVA in multivariate linear ***:Wide-field SS-OCTA shows that anti-VEGF therapy.can lead to a significant improvement in the paCFZ parameters in *** baseline P/A ratios on SS-OCTA tend to predict better visual outcomes at 12 months after anti-VEGF therapy.

关键词： Swept-source optical coherence tomography.angiography Branch retinal vein occlusion Periarterial capillary.free zone Anti-VEGF treatment Prognosis

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Liquid-phase epitaxial lay.r by.lay.r brushing fabrication of metalorganic frameworks films

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Nano Research 2024年第6期17卷 5698-5704页

作者： Li-Mei chang Rui Zhai Zhi-Zhou Ma Jian-Dong Huang Zhi-Gang Gu Jian Zhang College of Chemistry Fuzhou UniversityFuzhou 350108China State Key.Laboratory.of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University.of Chinese Academy.of Sciences Beijing 100049China

Development of metal-organic framework(MOF)films is of great importance to expand their ***,we report a facile and universal method of liquid-phase epitaxial(LPE)lay.r by.lay.r(LBL)brushing approach for fabricating MOF films on various substrates in a high-throughput *** MOF films preparation method offers a great prospective to cost-effectively.construct films with short preparation time and little reagent ***,this LBL brushing approach has been implemented successfully.to assemble various MOF films,including HKUST-1,zeolitic imidazolate framework-8(ZIF-8),Cu(bdc),and Cu_(2)(L)_(2)P(L=bdc,ndc,and cam;P=dabco and bipy..Afterwards,the classic MOF HKUST-1 and ZIF-8 films were grown on sensor chip electrode and porous fiber support for good volatile organic compounds(VOCs)selective sensing and water purification *** study.demonstrates that this LBL brushing preparation method can be employ.d to sy.thesize various MOF films with a variety.of characteristics to realize their sensing and separation applications.

关键词： metal-organic framework porous materials lay.r by.lay.r fabrication film

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Effect of lanthanide contraction on a series of "sulfate-templated" transition-rare-earth metal clusters:Sy.thesis,structures and magnetic properties

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Journal of Rare Earths 2024年第11期42卷 2150-2155页

作者： Kaipeng Bai Pengfei Sun Mohamed Saber Lassoued Caihong Fan chang Huang y.nzhen Zheng Weipeng Chen Frontier Institute of Science and Technology State Key Laboratory of Electrical Insulation and Power EquipmentXi'an Key Laboratory of Electronic Devices and Materials ChemistrySchool of ChemistryXi'an Jiaotong University Instrument Analy.is Center of Xi'an Jiaotong University

Twelve novel transition-rare-earth metal clusters,formulated as [Ni18Pr14（μ3OH）14（dmpa）10（mmt）10（SO4）4（CH3COO）16]·9CH3OH·5H2O（1,H3dmpa=dimethy.olpropionic acid,and Hmmt=2-me rcapto-5-methy.-1,3,4-thiadiazole） [Ni36RE102（OH）138（mmt）18（Hdmpa）30（H2dmpa）12（CH3COO）72（NO3）36（SO4）18（H2O）30]·Br6(RE=Nd（2）,Sm（3）,Eu（4） and Gd（5）)[Ni12RE10（μ3-OH）10（dmpa）8（mmt）8(S（4）2（CH3COO）8（H2O）4]·8CH3OH·7H2O(RE = Tb（6）,Dy.7）,Ho（8）,Er（9） and y.10）) [Ni8Pr8（μ3-OH）8（mmt）8（Hdpga）16（CH3COO）8]·8CH3OH（11,H2dpga=diphe ny.-gly.olic acid）,and [Ni16Tb6（μ3-OH）24（mmt）8（Hdpga）4（dpga）4（CH3COO）2（NO3）4（H2O）2]·12CH3OH·5H2O（12）,were sy.thesized solvothermally.by.using different ligand combinations and rare earth nitrates.X-ray.cry.tal structure analy.es reveal that complexes 1 and 12 possess sandwich-like *** 2-5 are isostructural and feature a hexagonal structure,shaped like a "Star of David".Isostructural 6-10 present ring-like structure,as well as the cluster *** structural variations of these complexes can be attributed to the effect of lanthanide ***,the template effect of SO42-anion derived from the slow decomposition of Hmmt ligand also play. a significant role in the formation of cluster *** insitu mechanism for the generation of sulfate anion is briefly.***,the magnetic properties of complexes 2-11 were studied which show ty.ical antiferromagnetic interactions.

关键词： Rare earths Transition-rare-earth metal clusters Mixed-ligand strategy Sulfate-templated Lanthanide contraction Exchange coupling

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