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Construction of 2D/2D Ti_(3)C_(2)T_(x)MXene/Cds heterojunction with photothermal effect for efficient photocataly.ic hy.rogen 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.y.ng s.y.y.ng 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 Phy.ics 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 photocataly.ic *** photocataly.ts 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 cataly.t 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-aly.ic hy.rogen evolution capability.upon the heterogeneous *** unique 2D/2D structure effectively.mitigated the recombination of photogenerated carriers,enhancing the photocataly.ic performance of the ***,the composite cataly.t 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 cataly.t with photothermal ef-fect demonstrates a remarkable hy.rogen 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 cataly.ts and expands the application of the photothermal effect in photocataly.ic hy.rogen evolution research.

关键词： Two-dimensional structure heterostructure Photothermal effect Photocataly.t hy.rogen evolution

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Electron kinetic effects in back-stimulated Raman scattering bursts driven by.broadband laser pulses

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Matter and Radiation at Extremes 2024年第4期9卷 54-67页

作者： Q.K.liu L.Deng Q.Wang X.Zhang F.Q.meng y.P.Wang y.Q.Gao h.B.Cai s.P.Zhu Graduate school China Academy of Engineering PhysicsBeijing 100088China Institute of Applied Phy.ics and Computational Mathematics Beijing 100094China school of Nuclear science and Technology University of Science and Technology of ChinaHefei 230026China shanghai Institute of Laser Plasma Shanghai 201800China hEDPs Center for Applied Physics and TechnologyPeking UniversityBeijing 100871China school of Phy.ics Zhejiang UniversityHangzhou 310027China

We examine electron kinetic effects in broadband-laser-driven back-stimulated Raman scattering(BsRs)bursts using particle-in-cell *** bursts occur during the nonlinear stage,causing reflectivity.spikes and generating large numbers of hot ***-duration simulations are performed to observe burst events,and a simplified model is developed to eliminate the interference of the broadband laser’s random intensity.*** the simplified model,we isolate and characterize the spectrum of electron plasma *** spectrum changes from a sideband structure to a turbulence-like structure during the burst.A significant asy.metry.in the spectrum is *** asy.metry.is amplified and transferred to electron phase space by.high-intensity.broadband laser pulses,leading to violent vortex-merging and generation of hot *** proportion of hot electrons increases from 6.76%to 14.7%during a single violent burst *** demonstrate that kinetic effects profoundly.influence the BsRs evolution driven by.broadband lasers.

关键词： scattering kinetic simplified

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Artificial-intelligent-powered safety.and efficiency.improvement for controlling and scheduling in integrated railway.sy.tems

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high-speed Railway 2024年第3期2卷 172-179页

作者： liu J. liu G. Wang y. Zhang W. Beijing National Railway.Research & Design Institute of signal & Communication Group Co. Ltd Beijing 100070 China Engineering Research Center of Railway.Industry.of Intelligent and Autonomous Train Control Beijing 100070 China

The multi-mode integrated railway.sy.tem, anchored by.the high-speed railway. caters to the diverse travel requirements both within and between cities, offering safe, comfortable, punctual, and eco-friendly.transportation services. With the expansion of the railway.networks, enhancing the efficiency.and safety.of the comprehensive sy.tem has become a crucial issue in the advanced development of railway.transportation. In light of the prevailing application of artificial intelligence technologies within railway.sy.tems, this study.leverages large model technology.characterized by.robust learning capabilities, efficient associative abilities, and linkage analy.is to propose an Artificial-intelligent (AI)-powered railway.control and dispatching sy.tem. This sy.tem is elaborately.designed with four core functions, including global optimum unattended dispatching, sy.ergetic transportation in multiple modes, high-speed automatic control, and precise maintenance decision and execution. The deploy.ent pathway.and essential tasks of the sy.tem are further delineated, alongside the challenges and obstacles encountered. The AI-powered sy.tem promises a significant enhancement in the operational efficiency.and safety.of the composite railway.sy.tem, ensuring a more effective alignment between transportation services and passenger demands. © 2024 Beijing Jiaotong University

关键词： Artificial intelligence high-speed railway Large-scale mode, sy.tem framework Multi-mode railway.sy.tem safety.and efficiency.improvement

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Thermo-kinetic characteristics on stabilizing hetero-phase interface of metal matrix composites by.cry.tal plasticity.finite element method

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Journal of Materials science & Technology 2024年第2期169卷 53-67页

作者： y.B.Zhang s.J.song F.liu state Key.Laboratory.of solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Analy.ical&Testing Center Northwestern Polytechnical UniversityXi’an 710072China

Using dislocation-based constitutive modeling in three-dimension cry.tal plasticity.finite element(3D CPFE)simulations,co-deformation and instability.of hetero-phase interface in different material sy.tems were herein studied for poly.ry.talline metal matrix composites(MMCs).Local stress and strain fields in two ty.es of 3lay.r MMCs such as fcc/fcc Cu-Ag and fcc/bcc Cu-Nb have been predicted under simple compressive ***,more severe strain-induced interface instability.can be observed in the fcc/bcc sy.tems than in the fcc/fcc sy.tems upon refining to metallic nanolay.red composites(MNCs).By.detailed analy.is of stress and strain localization,it has been demonstrated that the interface instability.is alway. accompanied by.high-stress concentration,i.e.,thermody.amic characteristics,or high strain prevention i.e.,kinetic characteristics,at the hetero-phase *** then follows that the thermody.amic driving forceG and the kinetic energy.barrier Q during dislocation and shear banding can be adopted to classify.the deformation modes,following the so-called thermo-kinetic *** by.inserting a high density.of high-energy.interfaces into the Cu-Nb composites,such thermo-kinetic integration at the hetero-phase interface allows a successful establishment of MMCs with the high△G-high Q deformation mode,which ensures high hardening and uniform strain distri-bution,thus efficiently.suppressing the shear band,stabilizing the hetero-phase interface,and obtaining an exceptional combination in strength and *** hetero-phase interface chosen by.a couple of thermody.amics and kinetics can be defined as breaking the thermo-kinetic correlation and has been proposed for artificially.designing MNCs.

关键词： Thermody.amics and kinetics Phy.ics-based constitutive modeling hetero-phase interface Cry.tal plasticity.finite element

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A perspective on age-related changes in cell environment and risk of neurodegenerative diseases

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Neural Regeneration Research 2024年第4期19卷 719-720页

作者： Alice y.liu Department of Cell Biology.and Neuroscience Rutgers State University of New JerseyPiscatawayNJUSA

“Age-related neurodegenerative disease”underscores human age as the primary.risk factor for disease development:Alzheimer’s,Parkinson’s,and huntington’s disease(hD)as *** for the age-dependent delay.in disease manifestation,in particular for autosomal dominant forms of the disease,and the underly.ng cause(s)of specific neuron dy.function and death to manifest as memory.loss,anxiety.depression,and agitation in disease subjects remain *** are interested in understanding age-related changes in cell environment that can modulate the structure,function,aggregation.

关键词： huntington Alzheimer death

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Preliminary.Application of high-Frequency.Ultrasound in the Differentiation of Pemphigus and Bullous Pemphigoid: An Observational study

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International Journal of Dermatology.and Venereology 2024年第3期7卷 155-159页

作者： liu y.-A. Cao R. Da M.-h. Dong Z.-B. Wang F. Department of Dermatology Taizhou Central Hospital (Taizhou University Hospital) Zhejiang Taizhou 318000 China Department of Dermatology Children's Hospital of Soochow University Jiangsu Suzhou 215025 China Department of Dermatology Zhongda Hospital Southeast University Jiangsu Nanjing 210009 China

Objective: Ultrasonography.is a diagnostic imaging technique used to visualize subcutaneous body.structures for identification of possible pathologies. In this study. we aimed to explore the clinical significance of high-frequency.ultrasound in differentiating the location of blisters between pemphigus and bullous pemphigoid. Methods: Eighteen patients were recruited in Department of Dermatology. Zhongda hospital from 2020 to 2021 and divided into a pemphigus group (n = 8) and a bullous pemphigoid group (n = 10) according to the diagnostic criteria for each. Ultrasonographic images were collected using a 50-Mhz high-frequency.ultrasound sy.tem. The indexes of ultrasonic evaluation were the lay.r (epidermis or dermis), size, shape, internal echo, and boundary.of the blister. Categorical variables are expressed as n (%), and differences were compared using Fisher's exact test. Results: The ultrasonographic images in the pemphigus group showed an intraepidermal semi-arc or irregular anechoic or hy.oechoic areas. The inferior borders were situated above the characteristic thin linear hy.erechoic bands of the epidermis. A linear hy.oechoic band was present at the dermoepidermal junction in some cases. In the ultrasonographic images of the bullous pemphigoid group, the linear hy.erechoic bands of the epidermis were continuous and intact. An oval fluid anechoic area (subepidermal blister) was present immediately.below the bands. The location of the blisters in the ultrasonographic images was significantly.different between the 2 groups (P sion: high-frequency.ultrasound can be used as an auxiliary.means to differentiate the location of blisters between pemphigus and bullous pemphigoid. © 2022 hospital for skin Diseases (Institute of Dermatology., Chinese Academy.of Medical sciences, and Chinese Medical Association, published by.Wolters Kluwer, Inc.

关键词： bullous pemphigoid high-frequency.ultrasound pemphigus

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Chinese Expert Consensus on the Diagnosis and Treatment of Adult Dermatomy.sitis (2022)#

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International Journal of Dermatology.and Venereology 2024年第3期7卷 163-173页

作者： Cao h. Chen A.-J. Cui y. Deng D.-Q. Gao X.-h. he y.-L. Kang X.-J. Jin h.-Z. Li C.-X. Li F. Li h.-J. Liao W.-J. liu X.-M. Lu Q.-J. Lu y. Pan M. Pan W.-h. shu X.-M. sun Q. Tang K.-y. Tao J. Wang y. Xiao T. Zhang F.-R. Zhang h.-L. Department of Dermatology Ruijin Hospital Affiliated Shanghai Jiao Tong University School of Medicine Shanghai 200025 China Department of Dermatology First Affiliated Hospital of Chongqing Medical University Chongqing 400042 China Department of Dermatology China-Japan Friendship Hospital Beijing 100029 China Department of Dermatology The Second Affiliated Hospital of Kunming Medical University Yunnan Kunming 650101 China Department of Dermatology The First Hospital of China Medical University Liaoning Shenyang 110001 China Department of Dermatology Beijing Chaoyang Hospital Affiliated to Capital Medical University Beijing 100020 China Department of Dermatology.and Venereology People's Hospital of Xinjiang Uygur Autonomous Region Xinjiang Uygur Autonomous Region Urumqi 830001 China Department of Dermatology State Key Laboratory of Complex Severe and Rare Diseases Peking Union Medical College Hospital Chinese Academy of Medical Science Peking Union Medical College Beijing 100730 China Department of Dermatology First Medical Center PLA General Hospital Beijing 100853 China Department of Dermatology Hainan Hospital of PLA General Hospital Hainan Sanya 572013 China Department of Dermatology Xijing Hospital Air Force Medical University Shaanxi Xi'an 710032 China Department of Dermatology Huazhong University of Science and Technology Union Shenzhen Hospital Guangdong Shenzhen 518052 China hospital for skin Diseases Institute of Dermatology Chinese Academy of Medical Sciences Peking Union Medical College Jiangsu Nanjing 210042 China Department of Dermatology Jiangsu Province Hospital The First Affiliated Hospital Nanjing Medical University Jiangsu Nanjing 210029 China Department of Dermatology Shanghai Changzheng Hospital Second Affiliated Hospital of Naval Medical University Shanghai 200003 China Department of Rheumatology China-Japan Friendship Hospital Beijing 100029 China Department of Dermatology Qilu Hospital of Shandong Universit

Dermatomy.sitis, an idiopathic inflammatory.my.pathy. is characterized by.distinctive skin manifestations, proximal muscle weakness, and multiple organ involvement and can be accompanied by.malignancies. To provide a reference for dermatologists and clinicians in other relevant fields of clinical practice, experts from the Dermatology.Branch of the China International Exchange and Promotion Association for Medical and health Care and the National Clinical Research Center for Dermatologic and Immunologic Diseases developed this consensus on the diagnosis and treatment of adult dermatomy.sitis using Chinese and international literature and expert advice. © 2024 Wolters Kluwer health. All rights reserved.

关键词： adult clinical protocols dermatomy.sitis diagnosis expert consensus treatment

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Rational design of AgGas/Zns/Zns quantum dots with a near-unity.photoluminescence quantum y.eld via double shelling scheme

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Journal of Materials science & Technology 2024年第2期169卷 235-242页

作者： h.X.Lu h.liu Z.Z.Fu y.y.Chen h.Q.Dai Z.hu W.L.Zhang R.Q.Guo Institute for Electric Light sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute of Future Lighting Academy for Engineering and TechnologyFudan UniversityShanghai 200433China y.wu Research Institute of Fudan University YiwuZhejiang 322000China Zhongshan-Fudan Joint Innovation Center Zhongshan 528437China

In this study.a two-step method was used to sy.thesize highly.luminescent AgGas/Zns/Zns quantum dots(QDs).In the first step,an inner Zns shell was formed via a one-pot method,which resulted in a smaller lattice mismatch between the AgGas core and the outer Zns shell,thereby.facilitating the formation of a thick outer *** the two-step shelling process,the sy.thesized AgGas/Zns/Zns QDs showed an excellent photoluminescence quantum y.eld(PLQy.of 96.4%with a peak wavelength of 508 nm,repre-senting the highest PLQy.reported thus far for AgGas ***,the effect of halogen ions in Zn precursors on the shelling process was *** was proposed that the capacity.of halogen ions to coordinate with the QDs influenced the balance between Zn cation diffusion and Zns shelling ***,the Zns shelling reaction was dominant when ZnCl_(2)was employ.d,while Zn cation diffusion was the dominant process under the I^(−)-rich *** work provides insights into the interfacial restructuring during the Zns shelling and offers a clear map for the tailored sy.thesis of core/shell QDs.

关键词： AgGas Quantum dots Photoluminescence Core/shell Alloy.d core/shell interface

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Interdecadal variability.of summer precipitation in the Three River source Region: Influences of ssT and zonal shifts of the East Asian subtropical westerly.jet

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Atmospheric and Oceanic science Letters 2024年第5期17卷 47-53页

作者： y.meng liu Xianhong meng Lin Zhao s-y.simon Wang Lixia Zhang Zhaoguo Li Chan Wang y.ngy.ng An Key.Laboratory.of Cry.spheric science and Frozen soil Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouChina Zoige Plateau Wetlands Ecosy.tem Research station Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouChina University.of Chinese Academy.of sciences BeijingChina Utah Climate Center Utah State UniversityLoganUSA The state Key.Laboratory.of Numerical Modeling for Atmospheric sciences and Geophy.ical Fluid Dy.amics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina

summer precipitation in the Three Rivers source Region(TRsR)of China is vital for the headwaters of the y.llow,y.ngtze,and Lancang rivers and exhibits significant interdecadal *** study.investigates the influence of the East Asian westerly.jet(EAWJ)on TRsR rainfall.A strong correlation is found between TRsR summer precipitation and the Jet Zonal Position Index(JZPI)of the EAWJ from 1961 to 2019(R=0.619,ps when a positive JZPI indicates a westward shift in the EAWJ,enhanced water vapor anomalies,warmer air,and low-level convergence anomalies contribute to increased TRsR summer *** empirical orthogonal function and regression analy.es,this research identifies the influence of large-scale circulation anomalies associated with the Atlantic–Eurasian teleconnection(AEA)from the North Atlantic(NA).The interdecadal variability.between the NA and central tropical Pacific(CTP)significantly.affects TRsR *** influence is mediated through the AEA via a Rossby.wave train extending eastward along the EAWJ,and another south of 45°***,the NA–CTP Opposite Phase Index(OPI),which quantifies the difference between the summer mean sea surface temperatures of the NA and the CTP,is identified as a critical factor in modulating the strength of this teleconnection and influencing the zonal position of the EAWJ.

关键词： summer precipitation East Asian subtropical westerly.jet Three River source Region Atlantic-Eurasian teleconnection

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Microstructure evolution and shape memory.behaviors of Ni_(47)Ti_(44)Nb_(9)alloy.subjected to multistep thermomechanical loading with different prestrain levels

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Journal of Materials science & Technology 2024年第4期171卷 80-93页

作者： y.h.Zhang h.Li Z.W.y.ng X.liu Q.F.Gu state Key.Laboratory.of solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China shaanxi Key.Laboratory.of high-Performance Precision Forming Technology.and Equipment Northwestern Polytechnical UniversityXi’an 710072China

Ni_(47)Ti_(44)Nb_(9)shape memory.alloy.sMA)is a promising material in the aerospace field due to its wide transformation *** application of shape memory.effect depends on multistep thermomechan-ical loading,viz.,low-temperature deformation and subsequent heating to ***-temperature deformation prestrain play. a pivotal role in shape memory.properties tailoring of sMA ***,microstructure evolution and deformation mechanisms of Ni_(47)Ti_(44)Nb_(9)sMA subjected to vari-ous prestrain levels are still *** this end,microstructure evolution and shape memory.behaviors of Ni_(47)Ti_(44)Nb_(9)alloy.subjected to multistep thermomechanical loading with prestrain levels of 8%-16%at-28℃(M_(s)+30℃)were *** results demonstrate that the stress-strain curve of the specimen exhibits four distinct stages at a maximal prestrain of 16%.Whereas stageⅡand stageⅢend at prestrains of∼8%and∼12%,*** stageⅡ,the stress-induced martensitic transformation is accompanied by.the dislocation slip of the NiTi matrix andβ-Nb *** stageⅢ,in addition to the higher density.of dislocations and further growth of stress-induced martensite variants(sIMVs),(001)compound twins are introduced as a result of the(001)deformation twinning in stress-induced ***{20-1}martensite twins are gradually.introduced in stageⅣ.Correspondingly.after subsequent unloading and heating,a higher density.ofsaustenite twins form in the specimen with a larger prestrain of 16%.With increasing prestrain from 8%to 16%,the recoverable strainε_(re)^(T)upon heating increases first and then ***ε_(re)^(T)obtains a maximum of 7.03%at 10%prestrain and de-creases to 6.17%at 16%*** increase ofε_(re)^(T)can be attributed to the formation of new sIMVs,the further growth of existing sIMVs,and the recoverable(001)compound *** the decrease ofε_(re)^(T)is mainly.associated with the irrecoverable strain by.20−1}martensite *** effe

关键词： Ni_(47)Ti_(44)Nb_(9)shape memory.alloy Wide transformation hy.teresis Thermomechanical loading Microstructure evolution shape memory.behaviors stress-induced martensitic transformation Deformation twinning

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