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MECh.NICS OF RELAXING SiGe ISLANd. ON A VISCOUS GLASS

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Acta Mech.nica Sinica 2002年第5期18卷 441-456页

作者： R. h.ang h. Yin J. Liang J. C. Sturm K. d. h.bart Z. Suo Mech.nical and.Aerospace Engineering d.partment and.Princeton Materials Institute Princeton University Princeton USA d.partment of Aerospace Engineering and.Engineering Mech.nics University of Texas at Austin Austin USA Center for Ph.tonics and.Optoelectronic Materials and.d.partment of Electrical Enineering Princeton University Princeton USA Naval Research.Laboratory Washington DC USA

A process h.s been d.veloped.recently to fabricate a structure com- prising,from top to bottom,a SiGe th.n film,a glass layer,and.a Si *** SiGe film is a perfect crystal,and.is und.r biaxial *** SiGe film is patterned.into *** annealing,th. glass flows and.th. island. *** resulting strain-free island. are used.as substrates,to grow epitaxial optoelectronic *** article d.scribes a series of stud.es on th. annealing process,combining experiment and.th.ory.A small island.relaxes by expansion,starting at th. ed.es and.d.ffusing to th. center.A large island.wrinkles before th. expansion reach.s th. *** some time,th. wrinkles eith.r d.sappear,or cause th. island.to fracture. We mod.l th. island.as an elastic plate,and.th. glass layer as a viscous *** strains in th. island. are measured.by X-ray d.ffraction and.Raman spectroscopy,and.th. wrinkle amplitud.s by atomic force *** d.ta are compared.with.th. th.oretical *** d.termine th. cond.tions und.r wh.ch.th. island. relax by expansion with.ut significant wrinkling,and.d.monstrate th.t a cap layer suppresses wrinkles,relaxing a large island.crack-free.

关键词： semicond.ctor fabrication stress relaxation viscous flow elastic plate fracture

d.YING OF GRANULAR MATERIALS IN AGITATEd.FLUId.ZEd.BEd

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Journal of h.d.od.namics 2001年第2期13卷 29-31页

作者： Ma, J.h. Liu, h. Feng, d.Z. d.pt. of Air-Cond.tion Eng. Shandong Inst. of Civil Eng. Jinan 250014 China

An experimental stud. of th. d.ying ch.racteristics of an agitated.fluid.zed.bed.d.yer is presented.and.d.scussed. In th. stud., th. citric acid.particles were used.as bed.material with.th. d.ameters ranging from 0.2 mm to 1.3 mm. Th. variables affecting apparently th. d.ying rate were found.to be th. mass flow rate, th. inlet air temperature, th. rotary speed.of agitating mech.nism and.th. particles feed.rate. Comparing with.oth.r variables consid.red. mass flow rate was found.to h.ve th. least important influence on th. d.ying rate. Th. agitated.fluid.zed.bed.d.yer is suitable to d.ying agglomerating or sticky materials.

关键词： d.yers (equipment) d.ying Experiments Mass transfer

A pre-compensation meth.d.of th. systematic contouring error for repetitive command.path.

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Frontiers of Mech.nical Engineering 2015年第4期10卷 367-372页

作者： d. L. Zh.NG Y. h. Ch.N Y. P. Ch.N State Key Laboratory of d.gital Manufacturing Equipment and.ech.ology School of Mechanical Science and Engineering HuazhongUniversity of Science and Technology Wuhan 430074 China

For a repetitive command.path. pre-compen- sating th. contouring error by mod.fying th. command.path.is practical. To obtain th. pre-compensation value with.better accuracy, th.s paper proposes th. use of a back propagation neural network to extract th. function of systematic contouring errors. Furth.rmore, by using th. extracted.function, th. contouring error can be easily pre- compensated. Th. experiment results verify th.t th. proposed.compensation meth.d.can effectively red.ce contouring errors.

关键词： contouring error pre-compensation motioncontrol system back propagation (BP) neural network

Effectiveness of a Passive-active Vibration Isolation System with.Actuator Constraints

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Ch.nese Journal of Mech.nical Engineering 2014年第3期27卷 567-574页

作者： sun Lingling sun Wei SONG Kongjie h.NSEN Colin h Key Laboratory of h.gh.efficiency and.Clean Mech.nical Manufacture Shandong University Sch.ol of Mech.nical Engineering University of Adelaide

In th. pred.ction of active vibration isolation performance, control force requirements were ignored.in previous work. Th.s may limit th. realization of th.oretically pred.cted.isolation performance if control force of large magnitud. cannot be supplied.by *** beh.vior of a feed.forward.active isolation system subjected.to actuator output constraints is investigated. d.stributed.parameter mod.ls are d.veloped.to analyze th. system response, and.to prod.ce a transfer matrix for th. d.sign of an integrated.passive-active isolation system. Cost functions comprising a combination of th. vibration transmission energy and.th. sum of th. squared.control forces are proposed. Th. example system consid.red.is a rigid.bod. connected.to a simply supported.plate via two passive-active isolation mounts. Vertical and.transverse forces as well as a rotational moment are applied.at th. rigid.bod., and.resonances excited.in elastic mounts and.th. supporting plate are analyzed. Th. overall isolation performance is evaluated.by numerical simulation. Th. simulation results are th.n compared.with.th.se obtained.using unconstrained.control strategies. In ad.ition, th. effects of waves in elastic mounts are analyzed. It is sh.wn th.t th. control strategies wh.ch.rely on tmconstrained.actuator outputs may give substantial power transmission red.ctions over a wid. frequency range, but also require large control force amplitud.s to control excited.vibration mod.s of th. system. Expected.power transmission red.ctions for mod.fied.control strategies th.t incorporate constrained.actuator outputs are consid.rably less th.n typical red.ctions with.unconstrained.actuator outputs. In th. frequency range in wh.ch.rigid.bod. mod.s are present, th. control strategies can only ach.eve 5-10 d. power transmission red.ction, wh.n control forces are constrained.to be th. same ord.r of th. magnitud. as th. primary vertical force. Th. resonances of th. elastic mounts result in a notable increase of

关键词： passive-active isolation transfer matrix control effort constraint feed.orward.control

Staged.d.nd.ite suppression for h.gh.safe and.stable lith.um-sulfur batteries

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Journal of Energy Ch.mistry 2025年第1期100卷 674-683页

作者： Jun Jiang Zh.njie Lu Yanwen d.ng Sh.jun Liu Zh.jie Qi Tian Tang Yunfan Zh.ng Zh.yuan Ma Jingwen sun Liang Xue Wenyao Zh.ng Pan Xiong Xin Wang Junwu Zh. Yongsh.ng Fu Key Laboratory for Soft Ch.mistry and.Functional Materials of Ministry of Ed.cation Nanjing University of Science and Technology Jiangsu Pylon Battery Co.Ltd

Th. unavoid.ble d.nd.ite growth.and.sh.ttle effect h.ve long been strangleh.ld.ch.llenges limiting th. safety and.practicality of lith.um-sulfur ***,we propose a d.al-action strategy to ad.ress th. lith.um d.nd.ite issue in stages by constructing a multifunctional surface-negatively-ch.rged.nanod.amond.layer with.h.gh.d.ctility and.robust puncture resistance on polypropylene （PP） *** uniformly load.d.compact negative layer can not only significantly enh.nce electron transmission efficiency and.promote uniform lith.um d.position,but also red.ce th. formation of d.nd.ite d.ring early d.position *** importantly,und.r th. strong puncture stress encountered.d.ring th. d.terioration of lith.um d.nd.ite growth.und.r limiting current,th. h.gh.d.ctility and.robust puncture resistance（145.88 MPa） of as-obtained.nanod.amond.layer can effectively prevent sh.rt circuits caused.by unavoid.ble lith.um *** Li||Li symmetrical cells assembled.with.nanod.amond.layer mod.fied.PP d.monstrated.a stable cycle of over 1000 h.at 2 mA cm-2with.a polarization voltage of only 29.3 ***,th. negative ch.rged.layer serves as a ph.sical barrier blocking lith.um polysulfid. ions,effectively mitigating capacity *** improved.cells ach.eved.a capacity d.cay of only 0.042%per cycle after 700 cycles at 3 C,d.monstrating effective suppression of d.nd.ite growth.and.capacity attenuation,sh.wing promising prospect.

关键词： Lith.um-sulfur batteries Staged.d.nd.ite suppression Sh.ttle effect Surface-negatively-ch.rged.nanod.amond

Nanoparticles for th. treatment of spinal cord.injury

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Neural Regeneration Research 2025年第6期20卷 1665-1680页

作者： Qiwei Yang d. Lu Jiuping Wu Fuming Liang h.ayi Wang Junjie Yang Ganggang Zh.ng Ch.n Wang Yanlian Yang Ling Zh. Xinzh. sun d.partment of Orth.ped.c Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan ProvinceChina CAS Key Laboratory of Stand.rd.zation and.Measurement for Nanotech.ology CAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijingChina University of Ch.nese Acad.my of Sciences BeijingChina d.partment of Neurosurgery The First Affiliated Hospital of Chongqing Medical UniversityChongqingChina

Spinal cord.injuries lead.to significant loss of motor, sensory, and.autonomic functions, presenting major ch.llenges in neural regeneration. Ach.eving effective th.rapeutic concentrations at injury sites h.s been a slow process, partly d.e to th. d.fficulty of d.livering d.ugs effectively. Nanoparticles, with.th.ir targeted.d.livery capabilities, biocompatibility, and.enh.nced.bioavailability over conventional d.ugs, are garnering attention for spinal cord.injury treatment. Th.s review explores th. current mech.nisms and.sh.rtcomings of existing treatments, h.gh.igh.ing th. benefits and.progress of nanoparticle-based.approach.s. We d.tail nanoparticle d.livery meth.d. for spinal cord.injury, includ.ng local and.intravenous injections, oral d.livery, and.biomaterial-assisted.implantation, alongsid. strategies such.as d.ug load.ng and.surface mod.fication. Th. d.scussion extend. to h.w nanoparticles aid.in red.cing oxid.tive stress, d.mpening inflammation, fostering neural regeneration, and.promoting angiogenesis. We summarize th. use of various types of nanoparticles for treating spinal cord.injuries, includ.ng metallic, polymeric, protein-based. inorganic non-metallic, and.lipid.nanoparticles. We also d.scuss th. ch.llenges faced. such.as biosafety, effectiveness in h.mans, precise d.sage control, stand.rd.zation of prod.ction and.ch.racterization, immune responses, and.targeted.d.livery in vivo. Ad.itionally, we explore future d.rections, such.as improving biosafety, stand.rd.zing manufacturing and.ch.racterization processes, and.ad.ancing h.man trials. Nanoparticles h.ve sh.wn consid.rable progress in targeted.d.livery and.enh.ncing treatment efficacy for spinal cord.injuries, presenting significant potential for clinical use and.d.ug d.velopment.

关键词： antioxid.nts axon regeneration biocompatible materials d.ug carriers nanoparticles nerve regeneration neuroinflammatory d.seases neuroprotection spinal cord.injury stem cells

Pan-TRK positive uterine sarcoma in immunoh.stoch.mistry with.ut neurotroph.c tyrosine receptor kinase gene fusions:A case report

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World.Journal of Clinical Cases 2025年第2期13卷 39-49页

作者： Seungmee Lee Yu-Ra Jeon Ch.ngmin Sh.n sun-Young Kwon Sojin Sh.n d.partment of Obstetrics and.Gynecology Keimyung University School of MedicineDaegu 42601South Korea d.partment of Path.logy and.Institute for Cancer Research Keimyung University School of MedicineDaegu 42601South Korea

BACKGROUNd.Th. classification of uterine sarcomas is based.on d.stinctive morph.logical and.immunoph.notypic ch.racteristics,increasingly supported.by molecular genetic *** on neurotroph.c tyrosine receptor kinase(NTRK)gene fusionpositive uterine sarcoma,potentially aggressive and.morph.logically similar to fibrosarcoma,are limited.d.e to its recent ***-TRK immunoh.stoch.mistry(Ih.)analysis serves as an effective screening tool with.h.gh.sensitivity and.specificity for NTRK-fusion *** SUMMARY We report a case of a malignant mesench.mal tumor originating from th. uterine cervix,wh.ch.was pan-TRK Ih.-positive but lacked.NTRK gene fusions,accompanied.by a brief literature review.A 55-year-old.woman presented.to th. emergency d.partment with.abd.minal pain and.d.stension,exh.biting significant ascites and.multiple solid.pelvic *** examination revealed.a tumor encompassing th. uterine cervix,extend.ng to th. vagina and.uterine corpus.A punch.biopsy of th. cervix ind.cated.NTRK sarcoma with.positive immunoch.mical pan-TRK ***,subsequent next generation sequencing revealed.no NTRK gene fusion,lead.ng to a d.agnosis of poorly d.fferentiated.ad.anced.stage *** Th. clinical significance of NTRK gene fusion lies in potential treatment with.TRK inh.bitors for positive *** such.rare tumors is crucial d.e to th. potential applicability of tropomyosin receptor kinase inh.bitor treatment.

关键词： Uterine sarcoma Cervical sarcoma Neurotroph.c tyrosine receptor kinase gene fusion Next generation sequencing Case report

Stability and.nonlinear vibrations of a flexible pipe parametrically excited.by an internal varying flow d.nsity

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Acta Mech.nica Sinica 2020年第1期36卷 206-219页

作者： W.d.Xie X.F.Gao W.h.Xu State Key Laboratory of h.d.aulic Engineering Simulation and.Safety Tianjin UniversityTianjin30072China

Pipes are often used.to transport multiph.se flows in many engineering *** total fluid.flow d.nsity insid. a pipe may vary with.time and.*** th.s paper,a simply supported.pipe conveying a variable d.nsity flow is mod.led.th.oretically,and.its stability and.nonlinear vibrations are investigated.in *** variation of th. flow d.nsity is simulated.using a math.matical *** equation governing th. vibration of th. pipe is d.rived.accord.ng to Euler-Bernoulli beam *** th. internal flow d.nsity varies with.time,th. pipe is excited.*** stability of th. pipe is d.termined.by Floquet *** simple parametric and.combination resonances are *** a h.gh.r mass ratio(mean flow mass/pipe structural mass),h.gh.r flow velocity,or smaller end.axial tension,th. pipe becomes unstable more easily d.e to wid.r parametric resonance *** th. subcritical flow velocity regime,th. vibrations of th. pipe are period.c and.quasiperiod.c for simple and.combination resonances,***,in th. supercritical regime,th. vibrations of th. pipe exh.bit much.rich.r d.namics includ.ng period.c,multiperiod.c,quasiperiod.c,and.ch.otic beh.viors.

关键词： Pipe Varying flow d.nsity Parametric excitation Stability Nonlinear vibrations

Th.ORETICAL ANALYSIS FOR Th. MOTION ANd.TEMPERATURE OF MELT d.OPLETS IN SPRAY d.GASSING PROCESS

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Acta Metallurgica Sinica(English.Letters) 2007年第3期20卷 193-198页

作者： R.Z. Wu Z.K. Qu B.d. sun d. Sh. J. Wang College of Materials Science ＆ Ch.mical Engineering Harbin Engineering University Harbin 150001 China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai 200030 China d.partment of Ch.mistry Harbin Normal University Harbin 150025 China

Th. motion of melt d.oplets in spray d.gassing process was analyzed.th.oretically. Th. h.igh. of th. treatment tank in spray d.gassing process couM be d.termined.by th. results of th.oretical calculation of motion of melt d.oplets. To know wh.th.r th. melt d.oplets wouM solid.fy d.ring spraying process, th. balance temperature of melt d.oplets was also th.oretically analyzed. Th.n proof experiments for th.oretical results about temperature of melt d.oplets were carried. In comparison, th. experimental results were nearly similar to th. calculation results,

关键词： spray d.gassing h.d.ogen removal aluminum melt motion temperature