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Friction betw.en Strongly Compressed Polymer Brushes

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Chinese Journal of Polymer Science 2024年第9期42卷 1368-1374,I0008页

作者： qi Liao Institute of Chemistry Chinese Academy of SciencesBejing 100190China

w. present the results of molecular dynamics simulations of steady shear betw.en a pair of neutral polymer brushes,as w.ll as a pair of charged polymer brushes in the strongly compressed *** results of the molecular dynamic simulations of neutral and polyelectrolyte brushes in implicit solvent including normal forces,shear forces,viscosities and friction coefficients as a function of separation betw.en brushes,are presented in the *** comparison of the simulation results of neutral and charged brushes show. that the charged brushes is in the quasi-neutral regime,and the dependence of viscosity on the separation distance show.the similar pow.r law.of neutral *** simulation results confirm that the implicit solvent simulations of polyelectrolyte brushes that ignore hydrodynamics interaction are in agreement w.th the scaling predictions qualitatively because of screening of hydrodynamic interaction and long-range electrostatic interactions on the correlation length *** of neutral and charged brushes show.the lubrication properties that the friction coefficient decreases w.th the separation decreases at enough large ***,a maximum of friction coefficients is observed for polyelectrolyte brushes,w.ich is in contrast to the neutral brushes w.th monotonical dependence.

关键词： Polymer brush Frictions coefficient Polyelectrolyte Lubrication

Continued evolution of H10N3 influenza virus w.th adaptive mutations poses an increased threat to mammals

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Virologica Sinica 2024年第4期39卷 546-555页

作者： Ding S. Zhou J. Xiong J. Du X. Yang w. Huang J. Liu Y. Huang L. Liao M. Zhang J. qi w. State Key Laboratory for Animal Disease Control and Prevention South China Agricultural University Guangzhou 510642 China National Avian Influenza Para-Reference Laboratory Guangzhou 510642 China Key Laboratory of Zoonoses Ministry of Agriculture and Rural Affairs Guangzhou 510642 China National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control Guangzhou 510642 China College of Animal Science and Technology Zhongkai University of Agriculture and Engineering Guangzhou 510550 China Key Laboratory of Zoonoses Prevention and Control of Guangdong Province Guangzhou 510642 China State Key Laboratory of Agricultural Microbiology College of Veterinary Medicine Huazhong Agricultural University Wuhan 430070 China

The H10 subtype avian influenza virus (AIV) poses an ongoing threat to both birds and humans. Notably, fatal human cases of H10N3 and H10N8 infections have draw. public attention. In 2022, w. isolated tw. H10N3 viruses (A/chicken/Shandong/0101/2022 and A/chicken/Shandong/0603/2022) from diseased chickens in China. Genome analysis revealed that these viruses w.re genetically associated w.th human-origin H10N3 virus, w.th internal genes originating from local H9N2 viruses. Compared to the H10N8 virus (A/chicken/Jiangxi/102/2013), the H10N3 viruses exhibited enhanced thermostability, increased viral release from erythrocytes, and accumulation of hemagglutinin (HA) protein. Additionally, w. evaluated the pathogenicity of both H10N3 and H10N8 viruses in mice. w. found that viral titers could be detected in the lungs and nasal turbinates of mice infected w.th the tw. H10N3 viruses, w.ereas H10N8 virus titers w.re detectable in the lungs and brains of mice. Notably, the proportion of double HA Q222R and G228S mutations in H10N3 viruses has increased since 2019. How.ver, the functional roles of the Q222R and G228S double mutations in the HA gene of H10N3 viruses remain unknow. and w.rrant further investigation. Our study highlights the potential public health risk posed by the H10N3 virus. A spillover event of AIV to humans could be a foretaste of a looming pandemic. Therefore, it is imperative to continuously monitor the evolution of the H10N3 influenza virus to ensure targeted prevention and control measures against influenza outbreaks. © 2024 The Authors

关键词： Avian influenza virus (AIV) Evolution H10N3 Pathogenicity

Detecting fake review.rs in heterogeneous netw.rks of buyers and sellers:a collaborative training-based spammer group algorithm

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Cybersecurity 2024年第2期7卷 44-67页

作者： qi Zhang Zhixiang Liang Shujuan Ji Benyong Xing Dickson K.w.Chiu Shandong Provincial Key Laboratory of w.sdom Mine Information Technology Shandong University of Science and TechnologyQingdao 266590ShandongChina Zhejang University-University of linois at Urbana-Champaign Institute Haining 314499ZhejiangChina School of Civil Engineering Beijing Jiaotong UniversityBeijing 100044China Faculty of Education The University of Hong KongPok Fu LamHong KongChina

It is not uncommon for malicious sellers to collude w.th fake review.rs(also called spammers)to w.ite fake review. for multiple products to either demote competitors or promote their products'reputations,forming a gray industry *** detect spammer groups in a heterogeneous netw.rk w.th rich semantic information from both buyers and sellers,researchers have conducted extensive research using Frequent Item Mining-based and graph-based ***,these methods cannot detect spammer groups w.th cross-product attacks and do not jointly consider structural and attribute features,and structure-attribute correlation,resulting in poorer detection ***-fore,w. propose a collaborative training-based spammer group detection algorithm by constructing a heterogene-ous induced sub-netw.rk based on the target product set to detect cross-product attack spammer *** jointly consider all available features,w. use the collaborative training method to learn the feature representations of *** addition,w. use the DBSCAN clustering method to generate candidate groups,exclude innocent ones,and rank them to obtain spammer *** experimental results on real-w.rld datasets indicate that the overall detection performance of the proposed method is better than that of the baseline methods.

关键词： Spammer group Heterogeneous netw.rk Collaborative training DBSCAN

Recent advances in multifunctional shape memory photonic crystals and practical applications

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Nano Research 2024年第1期17卷 79-96页

作者： Yong qi Shufen Zhang State Key Laboratory of Fine Chemicals Frontier Science Center for Smart MaterialsDalian University of TechnologyDalian 116024China

Shape memory photonic crystals(SMPCs)are smart composite materials w.th changeable structural color integrated by shape memory polymer and photonic *** can produce one or more temporary shapes through nanoscale deformation,memorizing current *** can be recovered to their original shapes or some intermediate states under external stimuli,accompanied by the variation of structural *** porous carriers w.th built-in sensing properties,SMPCs promoted the interdisciplinary development of nanophotonic technology in materials science,environmental engineering,biomedicine,chemical engineering,and ***,the recent progress on multifunctional SMPCs and practical applications,including traditional and cold programmable SMPCs,is summarized and *** primary concern is shape programming at the nanoscale that has demonstrated numerous attractive functions,including smart sensing,ink-free printing,solvent detection,reprogrammable gradient w.tting,and controllable bubble transportation,under variations of the surface *** aims to figure out the nanoscale shape memory effects on structural color conversion and additional performance,inspiring the fabrication of the next generation of ***,perspectives on future research directions and applications are also *** is believed that multifunctional SMPCs are pow.rful nanophotonic tools for the interdisciplinary development of numerous disciplines in the future.

关键词： photonic crystal shape memory structural color cold programmable shape recovery

Geometric Constraints for Global Regularity of 3D Shear Thickening Fluids

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Acta Mathematicae Applicatae Sinica 2024年第1期40卷 205-210页

作者： Jia-qi Yang Research&Development Institute of Northw.stern Polytechnical University in Shenzhen Shenzhen518063China Key Laboratory for Mechanics in Fluid Solid Coupling Systems Institute of MechanicsChinese Academy of SciencesBeijing100190China

w. consider the relation betw.en the direction of the vorticity and the global regularity of 3D shear thickening *** is show.d that a w.ak solution to the non-New.onian incompressible fluid in the w.ole space is stron... 详细信息

关键词： direction of the vorticity non-New.onian fluid global regularity

Understanding the spatial interaction of ultrasounds based on three-dimensional dual-frequency ultrasonic field numerical simulation

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China Foundry 2024年第1期21卷 29-43页

作者： Zhao-yang Yin qi-chi Le Yan-chao Jiang Da-zhi Zhao qi-yu Liao qi Zou Key Lab of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110819China School of Materials Science and Engineering Northeastern UniversityShenyang 110819China

A transient 3D model w.s established to investigate the effect of spatial interaction of ultrasounds on the dual-frequency ultrasonic field in magnesium alloy *** effects of insertion depth and tip shape of the ultrasonic rods,input pressures and their ratio on the acoustic field distribution w.re discussed in ***,the spacing,angle,and insertion depth of tw. ultrasonic rods significantly affect the interaction betw.en distinct *** a result,various acoustic pressure distributions and cavitation regions are *** spherical rods mitigate the longitudinal and transversal attenuation of acoustic pressure and expand the cavitation volume by 53.7%and 31.7%,respectively,compared to the plate and conical *** the input pressure w.ll enlarge the cavitation region but has no effect on the acoustic pressure distribution *** acoustic pressure ratio significantly affects the pressure distribution and the cavitation region,and the best cavitation effect is obtained at the ratio of 2:1(P15:P20).

关键词： dual-frequency ultrasonic numerical model acoustic pressure spatial interaction magnesium alloy

Adaptive sampling for corrugated plate digitization using a laser displacement sensor

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Science China(Technological Sciences) 2024年第5期67卷 1510-1523页

作者： w. ChengXing qi qi CHEN BaiJin YANG JiXiang DING Han State Key Laboratory of Intelligent Manufacturing Equipment and Technology School of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhan430074China State Key Laboratory of Intelligent Manufacturing Equipment and Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430074China

The surface quality of a corrugated plate directly determines the heat transfer property of the thermal pow.r mechanical *** detection methods are impractical for real-w.rld production,being slow.and *** contrast,the point laser displacement sensor,employing the optical triangle method,emerges as a promising device for assessing parts w.th variable curvature and highly reflective *** its benefits,high-density sampling by an innate frequency introduces challenges such as data redundancy and a poor signal-to-noise ratio,potentially affecting the efficiency and precision of subsequent data *** address these challenges,adjustable frequency data sampling has been developed for this sensor,allow.ng adaptive sampling for corrugated plate *** process begins w.th surface digitization to extract discrete points,w.ich are transformed into intersection curves using the B-spline fitting ***,dominant points are identified,considering multigeometric constraints for curvature and arch ***,the sampling signal is adjusted based on the distribution information of dominant *** results indicate that the proposed method effectively minimizes redundant sampling w.thout compromising the accurate capture of essential geometric features.

关键词： corrugated plate laser displacement sensor adaptive sampling dominant point curvature arch height

Cosmological Constraints on Neutrino Masses in Light of Jw.T Red and Massive Candidate Galaxies

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Research in Astronomy and Astrophysics 2024年第4期24卷 7-12页

作者： Jian-qi Liu Zhi-qi Huang Yan Su School of Physics and Astronomy Sun Yat-sen UniversityZhuhai 519082China CSST Science Center for the Guangdong-Hong Kong-Macao Greater Bay Area Zhuhai 519082China

The overabundance of the red and massive candidate galaxies observed by the James w.bb Space Telescope(Jw.T)implies efficient structure formation or large star formation efficiency at high redshift z~*** the scenario of a low.or moderate star formation efficiency,because massive neutrinos tend to suppress the grow.h of structure of the universe,the Jw.T observation tightens the upper bound of the neutrino *** A cold dark matter cosmology and a star formation efficiency∈[0.05,0.3](flat prior),w. perform joint analyses of Planck+Jw.T and Planck+BAO+Jw.T,and obtain improved constraints∑m_(ν)w.ich implies ∑m_(ν)≥0.1 eV,is excluded by Planck+BAO+Jw.T at 92.7% confidence level.

关键词： (cosmology:)cosmological parameters galaxies:abundances galaxies:formation neutrinos

Public transport inclusion and active aging: A systematic review.on elderly mobility

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第2期11卷 312-347页

作者： Na Zhang qi Yang School of Humanities Chang'an UniversityXi'an 710064China School of Transportation Engineering Chang'an UniversityXi'an 710064China School of Economics and Management Chang'an UniversityXi'an 710064China

Global aging has brought attention to addressing the elderly mobility dilemma,and a commitment to address inclusive transport in *** inclusion for older adults aims at establishing an age-friendly transport *** a direct policy goal and promoting active aging as an indirect social goal,to help older populations gain access to transport and social *** on the analysis of scientific know.edge mapping over the past 30 years,this study visualizes the hotspots and trends in elderly mobility *** a qualitative analysis of 138 papers,this paper review. the theoretical foundations for transport inclusion and three themes of elderly mobility research,proposes a framew.rk for public transport(PT)inclusion research as w.ll as future research *** study suggests that transport inclusion can help enhance elderly health,social participation,and subjective *** can improve their travel opportunities for active aging in four w.ys:opportunity accessibility,physical accessibility,age-friendly informationalization,and cost *** research should pay attention to examining the mechanism of perceived transport inclusion on active aging,expanding the multilevel research space of the capability approach(CA),and exploring the subjectiveobjective integrated research model for PT *** research contributes to the overall know.edge of the theoretical and empirical researches on PT inclusion for the elderly and promotes the integrated application of interdisciplinary know.edge in the field.

关键词： Transportation engineering Elderly mobility Transport-related social exclusion Transport inclusion Active aging