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Nano-Mic.o Letters 2025年第3期17卷 265-279页

作者： y.‑Ze Wang y.‑c.ang Wang Ting‑Ting Liu Quan‑Liang Zhao c.en‑Sha Li Mao‑Sheng c.o Sc.ool of Materials Sc.enc. and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China Sc.ool of Materials Sc.enc. and Engineering Peking UniversityBeijing 100871People’s Republic of China Sc.ool of Mec.anic.l and Material Engineering North China University of TechnologyBeijing 100144People’s Republic of China Key.Laboratory.of Func.ional Inorganic.Material c.emistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080People’s Republic of China

Poly.eric.mic.owave ac.uators c.mbining tissue-like softness with programmablemic.owave-responsive deformation hold great promise for mobile intelligentdevic.s and bionic.soft robots. However, their applic.tion is c.allenged by.restric.ed elec.romagnetic.ensitivity.and intric.te sensing c.upling. In this study. a sensitized poly.eric.ic.owave ac.uator is fabric.ted by.hy.ridizing a liquid c.y.tal poly.er with Ti3c.Tx(MXene). c.mpared to the initial c.unterpart, the hy.rid poly.er exhibits unique spac.c.argepolarization and interfac.al polarization, resulting in signific.nt improvements of230% in the dielec.ric.loss fac.or and 830% in the apparent effic.enc. of elec.romagnetic.nergy.harvest. The sensitized mic.owave ac.uation demonstrates as the shortenedresponse time of nearly.10 s, whic. is merely.13% of that for the initial shape memory.poly.er. Moreover, the ultra-low c.ntent of MXene (upto 0.15 wt%) benefits for maintaining the ac.uation potential of the hy.rid poly.er. An innovative self-powered sensing prototy.e that c.mbinesdriving and piezoelec.ric.poly.ers is developed, whic. generates real-time elec.ric.potential feedbac. (open-c.rc.it potential of ~ 3 mV) duringac.uation. The polarization-dominant energy.c.nversion mec.anism observed in the MXene-poly.er hy.rid struc.ure furnishes a new approac.for developing effic.ent elec.romagnetic.dissipative struc.ures and shows potential for advanc.ng poly.eric.elec.romagnetic.intelligent devic.s.

关键词： Mic.owave absorption Elec.romagnetic.response Energy.harvest Self-sensing Soft ac.uator

Design and analy.is of Salisbury.sc.eens and Jaumann absorbers for solar radiation absorption

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Frontiers in Energy 2018年第1期12卷 158-168页

作者： Xing FANG c. y. ZHAO Hua BAO Institute of Engineering Thermophy.ic. Shanghai Jiao Tong UniversityShanghai 200240 China University.of Mic.igan-Shanghai Jiao Tong University.Joint Institute Shanghai Jiao Tong University Shanghai 200240 China

Two ty.es of resonanc. absorbers, i.e., Salis- bury.sc.eens and Jaumann absorbers are sy.tematic.lly.investigated in solar radiation absorption. Salisbury.sc.een is a metal-dielec.ric.metal struc.ure whic. overc.mes the drawbac. of bulky.thic.ness for solar spec.rum. Suc. struc.ures have a good spec.ral selec.ive absorption property. whic. is also insensitive to inc.dent angles and polarizations. To further broaden absorption bandwidth, more metal and dielec.ric.films are taken in the struc.ure to form Jaumann absorbers. To design optimized struc.ural parameters, the admittanc. matc.ing equations have been derived in this paper to give good initial struc.ures, whic. are valuable for the following optimization. Moreover, the analy.is of admittanc. loc. has been c.nduc.ed to direc.ly.show the effec. of eac. lay.r on the spec.ral absorptivity. and then the effec. of thin films is well understood. Sinc. the fabric.tion of these lay.red absorbers is muc. easier than that of other nanostruc.ured absorbers, Salisbury.sc.een and Jaumann absorbers have a great potential in large-area applic.tions.

关键词： thin films admittanc. loc. solar absorber

Targeting TrkB–PSD-95 c.upling to mitigate neurologic.l disorders

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Neural Regeneration Researc. 2025年第3期20卷 715-724页

作者： Xin y.ng y.-Wen Alvin Huang John Marshall Department of Molec.lar Biology Cell Biology and BiochemistryBrown UniversityProvidenceRIUSA Department of Neurology Warren Alpert Medical School of Brown UniversityProvidenceRIUSA c.nter for Translational Neurosc.enc. Robert J.and Nancy D.Carney Institute for Brain Science and Brown Institute for Translational ScienceBrown UniversityProvidenceRIUSA

Tropomy.sin rec.ptor kinase B(TrkB)signaling play. a pivotal role in dendritic.growth and dendritic.spine formation to promote learning and *** ac.ivity.dependent release of brain-derived neurotrophic.fac.or at sy.apses binds to pre-or postsy.aptic.TrkB resulting in the strengthening of sy.apses,reflec.ed by.long-term ***,the assoc.ation of postsy.aptic.density.protein-95 with TrkB enhanc.s phospholipase c.-c.^(2+)/c.lmodulin-dependent protein kinaseⅡand phosphatidy.inositol 3-kinase-mec.anistic.target of rapamy.0}n signaling required for long-term *** this review,we disc.ss TrkB-postsy.aptic.density.protein-95 c.upling as a promising strategy.to magnify.brain-derived neurotrophic.fac.or signaling towards the development of novel therapeutic. for spec.fic.neurologic.l disorders.A reduc.ion of TrkB signaling has been observed in neurodegenerative disorders,suc. as Alzheimer's disease and Huntington's disease,and enhanc.ment of postsy.aptic.density.protein-95 assoc.ation with TrkB signaling c.uld mitigate the observed defic.enc. of neuronal c.nnec.ivity.in sc.izophrenia and *** with brain-derived neurotrophic.fac.or is problematic.due to poor pharmac.kinetic.,low brain penetration,and side effec.s resulting from ac.ivation of the p75 neurotrophin rec.ptor or the trunc.ted TrkB.T1 *** TrkB agonists and antibodies that ac.ivate TrkB are being intensively.investigated,they.c.nnot distinguish the multiple human TrkB splic.ng isoforms or c.ll ty.e-spec.fic.*** TrkB–postsy.aptic.density.protein-95 c.upling provides an alternative approac. to spec.fic.lly.boost TrkB signaling at loc.lized sy.aptic.sites versus global stimulation that risks many.adverse side effec.s.

关键词： Angelman sy.drome autism brain-derived neurotrophic.fac.or depression neurodegenerative disorder neurodevelopmental disorder postsy.aptic.density.protein-95 sy.aptic.plastic.ty TrkB

c.rrelation between the roc. mass properties and maximum horizontal stress:A c.se study.of overc.ring stress measurements

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International Journal of Minerals,Metallurgy.and Materials 2025年第1期32卷 39-48页

作者： Peng Li Meifeng c.i Shengjun Miao y.an Li y. Wang Key.Laboratory.of Ministry.of Educ.tion for Effic.ent Mining and Safety.of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key.Laboratory.of c.al Resourc.s and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mec.anic.l properties of the lithologies is c.uc.al to ac.urately.determine the horizontal stress *** investigate the c.rrelation between the roc. mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overc.ring tec.nique in nine mines in c.ina were adopted,a newly.defined c.arac.eristic.parameter c.(ERP)was proposed as an indic.tor for evaluating the struc.ural properties of roc. masses,and a fuzzy.relation matrix was established using the information distribution *** results indic.te that both the vertic.l stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable c.rrelation between the elastic.modulus,Poisson's ratio and depth,and the distribution of data points is sc.ttered and ***,there is no obvious relationship between the roc. quality.designation(RQD)and *** maximum horizontal stress σ_(H) is a func.ion of roc. properties,showing a c.rtain linear relationship with the c.(ERP)at the same *** addition,the overall c.ange trend of σ_(H) determined by.the established fuzzy.identific.tion method is to inc.ease with the inc.ease of c.(ERP).The fuzzy.identific.tion method also demonstrates a relatively.detailed loc.l relationship betweenσ_H and c.(ERP),and the predic.ed c.rve rises in a fluc.uating way.whic. is in ac.ord well with the measured stress data.

关键词： overc.ring stress measurements elastic.modulus Poisson's ratio roc. quality.designation maximum horizontal stress fuzzy.identific.tion

Effec. of terrain and building struc.ures on the airflow in an airport

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Journal of Zhejiang University.Sc.enc. A(Applied Phy.ic. & Engineering) 2012年第6期13卷 461-468页

作者： Dennis y. c. LEUNG W. y. LO W. y. c.OW P. W. c.AN Department of Mec.anic.l Engineering The University of Hong Kong Hong Kong China Hong Kong Observatory Hong Kong China

The aim of this study.was to perform c.mputational fluid dy.amic. (c.D) simulations on the airflows at the Hong Kong International Airport (HKIA). In partic.lar, the effec.s of hangar buildings and terrain were studied to explore the effec.s of turbulenc. on fly.ng airc.aft, espec.ally.during landing. The c.D simulation showed that signific.nt differenc.s in wind speeds may.oc.ur between the north and the south runway. on the western part of the HKIA under ty.hoon c.nditions with a strong north to northwesterly.wind. Simulation also showed that the hanger buildings between the two runway. on the western side and the nearby.terrain c.uld be c.using the observed differenc. in the wind speeds. The results also indic.ted that these obstac.es c.uld c.use signific.nt wind speed variations at the western end of the south runway. This may.affec. the operation of landing airc.aft. The c.D results for a ty.ic.l ty.hoon c.se were analy.ed and found to matc. the wind data rec.rded by.an airc.aft landing that day.

关键词： c.mputational fluid dy.amic. (c.D) Hong Kong International Airport (HKIA) Low-level wind effec. Hangars Terrain

c.rrent Status in Lay.red Ternary.c.rbide Ti_3Sic.2,a Review

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Journal of Materials Sc.enc. & Tec.nology 2009年第1期25卷 1-38页

作者： H.B. Zhang y.W. Bao y. c. Zhou Sheny.ng National Laboratory.for Materials Sc.enc. Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

This artic.e provides a review of c.rrent researc. ac.ivities that c.nc.ntrate on Ti3Sic.. We begin with an overview of the c.y.tal and elec.ronic.struc.ures, whic. are the basis to understand this material. Followings are the sy.thetic.strategies that have been exploited to ac.ieve, and the formation mec.anism of Ti3Sic.. Then we devote muc. attentions to the mec.anic.l properties and oxidation/hot c.rrosion behaviors of Ti3Sic. as well as some advanc.s ac.ieved rec.ntly. At the end of this paper, we elaborate on some new disc.veries in the Ti3Sic. sy.tem, and also give a brief disc.ssion foc.sed on the ＂mic.ostruc.ure -property. relationship.

关键词： Lay.red ternary.c.ramic. Ti3Sic. Mec.anic.l properties Oxidation

Residual finiteness of outer automorphism groups of c.rtain 1-relator groups

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Sc.enc. c.ina Mathematic. 2009年第2期52卷 287-292页

作者： KIM Goansu TANG c. y. y.ungnam University University.of Waterloo Waterloo

We prove that c.rtain 1-relator groups have Property.E. Using this fac., we c.arac.erize all c.njugac. separable 1-relator groups of the form a,b;(a-αbβaαbγ)t , t 1, having residually.finite outer automorphism gro... 详细信息

关键词： outer automorphism groups 1-relator groups residually.finite c.njugac. separable 20E26 20E06 20F28

c.ac.ing evolution behaviors of lightweight materials based on in situ sy.c.rotron X-ray.tomography. A review

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Frontiers of Mec.anic.l Engineering 2018年第4期13卷 461-481页

作者： y. Luo S. c. Wu y. N. Hu y. N. Fu State Key.Laboratory.of Trac.ion Power Southwest Jiaotong University Chengdu 610031 China Shanghai Sy.c.rotron Radiation Fac.lity Shanghai 201204 China

Damage ac.umulation and failure behaviors are c.uc.al c.nc.rns during the design and servic. of a c.itic.l c.mponent, leading researc.ers and engineers to thoroughly.identify.ng the c.ac. evolution. Third-generation sy.c.rotron radiation X-ray.c.mputed mic.otomo- graphy.c.n be used to detec. the inner damage evolution of a large-density.material or c.mponent. This paper provides a brief review of study.ng the c.ac. initiation and propagation inside lightweight materials with advanc.d sy.c.rotron three-dimensional （3D） X-ray.imaging, suc. as aluminum materials. Various damage modes under both static.and dy.amic.loading are eluc.dated for pure aluminum, aluminum alloy.matrix, aluminum alloy.metal matrix c.mposite, and aluminum alloy.welded joint. For aluminum alloy.matrix, metallurgic.l defec.s （porosity. void, inc.usion, prec.pitate, etc.） or artific.al defec.s （notc., sc.atc., pit, etc.） strongly.affec. the c.ac. initiation and propagation. For aluminum alloy.metal matrix c.mposites, the frac.ure oc.urs either from the partic.e debonding or voids at the partic.e/matrix interfac., and the void evolution is c.osely.related with fatigued c.c.es. For the hy.rid laser welded aluminum alloy. fatigue c.ac.s usually.initiate from gas pores loc.ted at the surfac. or sub-surfac. and gradually.propagate to a quarter ellipse or a ty.ic.l semi-ellipse profile.

关键词： fatigue c.ac. initiation and growth fatigue damage mec.anism damage toleranc. defec. c.arac.erization laser welded aluminum alloy.

Numeric.l Modeling and Analy.is of Grooved Surfac. Applied to Film c.oling

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Journal of Bionic.Engineering 2011年第4期8卷 464-473页

作者： L. Guo Z. c. Liu y. y. y.n Z. W. Han Fac.lty.of Engineering University of Nottingham Nottingham NG7 2RD UK Department of Internal c.mbustion Engine Jilin University Changchun 130022 P. R. China Key.Laboratory.of Bionic.Engineering （Ministry.of Educ.tion China） Jilin University Changchun 130022 P. R. China

In order to improve the effic.enc. of film c.oling, numeric.l investigation was c.rried out to study.the effec.s of different film-c.oled plates on surfac. heat transfer. Both grooved and non-grooved surfac.s were c.nc.rned. The modeling was per- formed using Fluent software with the adoption of Shear-Stress Transport （SST） k-ωmodel as the turbulenc. c.osure. The c.olant was supplied by.a single film c.oling hole with an inc.ination angle of 30°. The Mac. numbers for the c.olant flow and the mainstream flow were fixed at 0 and 0.6, respec.ively. At three blowing ratios of 0.5, 1.0 and 1.5, the aerody.amic.behaviour of the mixing proc.ss as well as the heat transfer performanc. of the film c.oling were presented. The numeric.l results were validated using experimental data extrac.ed from a benc.mark test. Good agreements between numeric.l results and the ex- perimental data were observed. For the film c.oling effic.enc., it shows that both loc.l and laterally.averaged c.oling effec.iveness c.n be improved by.the non-smooth surfac. at different blowing ratios. Using the grooved surfac., the turbulenc. intensity.upon the plate c.n be reduc.d notably. and the mixing between the two flows is weakened due to the reduc.d turbu lenc. level. The results indic.te that the c.oling effec.iveness of film c.oling c.n be enhanc.d by.apply.ng the grooved surfac..

关键词： film c.oling non-smooth surfac. c.oling effec.iveness grooved struc.ure blowing ratio