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Construction of 2./2. Ti_(3)C_(2.T_(x)MXene/CdS heteroj.nction with photothermal effect for efficient photocataly.ic hy.rogen production

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j.urnal 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 heteroj.nction cataly.t is obtained by.in-situ epitaxial growth of two-dimensional(2.)CdS nanosheets on 2. 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 2./2. 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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Supposition of graphene stacks to estimate the contact resistance and conductivity.of nanocomposites

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Applied Mathematics and Mechanics(English Edition) 2024年第4期45卷 663-676页

作者： y.ZARE M.T.MUNIR G.j.WENG K.y.RHEE Biomaterials and Tissue Engineering Research Group Department of Interdisciplinary TechnologiesBreast Cancer Research CenterMotamed Cancer InstituteTehran ***Iran College of Engineering and Technology American University of the Middle EastEgaila 54200Kuwait Department of Mechanical and Aerospace Engineering Rutgers UniversityNew BrunswickNJ 08903U.S.A. Department of Mechanical Engineering(BK2. Four) College of EngineeringKyung Hee UniversityYongin 446701Republic of Korea

In this study.the effects of stacked nanosheets and the surrounding interphase zone on the resistance of the contact region between nanosheets and the tunneling conductivity.of samples are evaluated with developed equations superior to those previously.*** contact resistance and nanocomposite conductivity.are modeled by.several influencing factors,including stack properties,interphase depth,tunneling size,and contact *** developed model's accuracy.is verified through numerous experimental *** further validate the models and establish correlations between parameters,the effects of all the variables on contact resistance and nanocomposite conductivity.are ***,the contact resistance is primarily.dependent on the poly.er tunnel resistivity.contact area,and tunneling *** dimensions of the graphene nanosheets significantly.influence the conductivity.which ranges from 0 S/m to90 S/*** increased number of nanosheets in stacks and a larger gap between them enhance the nanocomposite's ***,the thicker interphase and smaller tunneling size can lead to higher sample conductivity.due to their optimistic effects on the percolation threshold and network efficacy.

关键词： graphene poly.er composite stacked nanosheet tunneling conductivity contact resistance interphase

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Primary.and Secondary.Microplastic and Nanoplastic Regulations: Perspectives on Water Industry.Impacts

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j.urnal of Environmental Protection 2024年第6期15卷 697-715页

作者： Shirin Estahbanati Giridhar Upadhy.y. Martha {2. M. Wells Katherine y. Bell Brown and Caldwell New York NY USA Brown and Caldwell Irvine CA USA EnviroChem Services Cookeville TN USA Brown and Caldwell Nashville TN USA

Plastic pollution, both primary.and secondary. is an environmental challenge, prompting regulatory.actions at global and regional levels. With increasing research about the impacts of micro- and nanoplastics on ecosy.tems and human health, governments worldwide have undertaken efforts to address this issue. The global community.has advanced regulatory.efforts that have led to the implementation of national laws or regulations in numerous countries. These measures ban or restrict the use of primary.and secondary.microplastics and nanoplastics. An overview of global and European regulatory.frameworks is presented to provide context for the United States (US). In the endeavor to document plastics regulation development in the US, a description of regulatory.agencies and their roles in advancing policy.and rules as well as future direction and areas for improvement in regulating plastics are introduced. A discussion of what emerging regulations mean to utilities and industries is also provided along with a comparison of regulatory.frameworks.

关键词： Microplastic Regulation Environmental Governance Plastic Pollution Mitigation Regulatory.Framework

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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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j.urnal 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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Predicting Purchasing Behavior on E-Commerce Platforms: A Regression Model Approach for Understanding User Features that Lead to Purchasing

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International j.urnal of Communications, Network and Sy.tem Sciences 2024年第6期17卷 81-103页

作者： Abraham j.llah Baly.mah Sonkarlay.j. y. Weamie j.ang Bin Karmue Vasco j.rnda Felix j.akdak j.shua College of Computer Science and Engineering Hunan University Changsha China Department of Health Inspection and Quarantine Xiangya School of Public Health Central South University Changsha China

This research introduces a novel approach to improve and optimize the predictive capacity.of consumer purchase behaviors on e-commerce platforms. This study.presented an introduction to the fundamental concepts of the logistic regression algorithm. In addition, it analy.ed user data obtained from an e-commerce platform. The original data were preprocessed, and a consumer purchase prediction model was developed for the e-commerce platform using the logistic regression method. The comparison study.used the classic random forest approach, further enhanced by.including the K-fold cross-validation method. Evaluation of the accuracy.of the model’s classification was conducted using performance indicators that included the accuracy.rate, the precision rate, the recall rate, and the F1 score. A visual examination determined the significance of the findings. The findings suggest that employ.ng the logistic regression algorithm to forecast customer purchase behaviors on e-commerce platforms can improve the efficacy.of the approach and y.eld more accurate predictions. This study.serves as a valuable resource for improving the precision of forecasting customers’ purchase behaviors on e-commerce platforms. It has significant practical implications for optimizing the operational efficiency.of e-commerce platforms.

关键词： E-Commerce Platform Purchasing Behavior Prediction Logistic Regression Algorithm

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

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j.urnal 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 {2.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

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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 ad{2.sted by.utilizing spheroid Al powder with vary.ng 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 2.1 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

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Influence of the zigzag fins and inlet arrangements on the cooling proficiency.of the mini-channel heat sink

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Propulsion and Power Research 2024年第2期13卷 194-206页

作者： A.Torbatinezhad y.Pahamli M.j.Hosseini R.Bahrampoury School of Mechanical Engineering Babol University of TechnologyBabolIran Department of Mechanical Engineering Semnan UniversitySemnanIran Department of Mechanical Engineering Faculty of EngineeringGolestan UniversityGorganIran Department of Mechanical Engineering K.N.Toosi University of TechnologyTehranIran

Mini-channel heatsinks are one of the most effective thermal management methods for high heatﬂux devices due to the high performance of convective heat *** recent y.ars,various techniques have been innovated to improve the thermal proﬁciency.of the mini-channel *** of these are taking advantage ofﬁns’structural designs and ar-rangements of inlets and *** zigzagﬁns and channels were considered in the previous works in heatsinks,and researchers analy.ed their cooling enhancement ***,in the present work,a combined cooling technique,considering new-ty.e zigzagﬁns’geometrical parameters(arrangement,length,and height)causes turbulenceﬂow and higher convective heat transfer along with different positionings ofﬂow inlet and outlets resulting in superior temper-ature uniformity.is proposed to evaluate their impacts on the cooling proﬁciency.of the heat sink versus different Rey.olds *** assess the thermal and hy.raulic performance of the proposed heatsink,different parameters,including temperature contours,Nusselt numbers,thermal resistance,and entropy.generation are *** a result,it is observed that in the case demonstrating the best thermal performance,the Nusselt number,pressure drop,thermal resistance,and entropy.generation are respectively.37.13,4586.46 Pa,0.000078 m^(2.·K/W,and 0.1078 W/K in the best *** well,it is found that by.changing the arrangements of inlets and outlets,the Nusselt number,and thermal resistance are improved by.12.and 13%,***,the proposed mini-channel heat sink could be used as a high-performance thermal management sy.tem for electronic devices in different industries,including energy.solar,and medical sectors.

关键词： Thermal management Heat transfer enhancement Mini-channel heatsink Zigzagﬁn Entropy.generation Electronic cooling

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Creep-induced redistribution of alloy.ng elements in CZ1 zirconium alloy.

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j.urnal of Materials Science & Technology 2024年第6期173卷 31-44页

作者： W.T.Lin Q.y.Lv D.j.ao L.B.Zhang j.Tan G.Sha j.Hu China Nuclear Power Technology.Research Institute Shenzhen 518026China School of Material Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China

Introducing minor alloy.ng elements is an effective strategy.to improve the corrosion and mechanical properties of zirconium alloy. for nuclear *** in-reactor service,external environment and stress can affect the distribution of alloy.ng elements,substantially.changing the degradation process of zirconium *** date,there is a lack of in-depth understanding of the interaction between creep and microchemistry.***,we conducted sy.tematic transmission electron microscopy.TEM)and atom probe tomography.APT)investigations to address creep-induced redistribution of alloy.ng elements in CZ1(Zr-Sn-Nb-Fe-Cr-Cu)zirconium alloy.with different initial ***,Fe,Sn,and Cu are found to co-segregate at grain *** higher the intermediate annealing temperature,the larger the Gibbsian interfacial excesses of solute elements *** further demonstrate that creep can reduce the excess value of Fe at grain boundaries due to the coarsening of Zr-Fe-Cr second phase particles via grain boundary.and dislocation pipe *** the same time,the excess value of Sn is increased by.diffusing from the matrix to grain ***,Cu as a minor element in the concentration range of 0.05-0.3 wt.%is found to segregate at dislocations to form the Cottrell atmosphere and develop Cu-rich nanoclusters for suppressing dislocation *** new understanding of the segregation and clustering of minor alloy.ng elements provides guidance for developing zirconium alloy. with enhanced creep resistance.

关键词： Zirconium alloy Thermal creep Grain boundary.segregation Dislocation segregation Cu-rich nanoclusters

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Four Late-ty.e Galaxies with Double Radio Lobes and Properties of Such Galaxies

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Research in Astronomy.and Astrophy.ics 2024年第4期24卷 84-90页

作者： Z.S.y.an X.y.Gao Z.L.Wen {2.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-ty.e 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 survey. 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-ty.e Galaxies with double Radio Lobes(La GRLs):j.2.7-3645,j.947+62.0,j.412.372. and j.736+*** previously.known La GRLs,we confirm the correlation between radio power P_(1.4GHz)and stellar mass M_(*)of host ***(2./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 maj.rity.31/36)of La GRLs are either located in a galaxy.group or display.ng a disturbed *** suggest that all of the galaxy.mass,color and surrounding environment could play.important roles in triggering radio lobes in late-ty.e galaxies.

关键词： galaxies:active galaxies:j.ts galaxies:spiral radio continuum:galaxies

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