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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

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. earth.as a crad.e for life

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The earth as a cradle for life

Ph.tonic Crystal VCSELs

作者： Frank d. Stacey & Jane h. h.d.kinson.

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光学学报 2003年第S1期23卷 371-372页

作者： d. S. Song J. W. Paek K. h. Lee Y. h. Lee d.partment of Ph.sics Korea Advanced Institute of Science and Technology 373-1 Kusung-dong Yusung-gu Taejon Korea 305-701

Ph.tonic crystal vertical cavity surface emitting lasers (PC VCSELs) are reviewed. Th. PC VCSEL sh.ws single-transverse-mod. continuous wave operation in th. entire current range with.sid. mod. suppression ratio 35-40 d.. A simple 3-d.plane wave expansion meth.d.is found.to be very effective in analyzing th. mod.l properties of th. PC VCSELs.

关键词： plane wave expansion meth.d surface emitting lasers vertical cavity continuous wave

Efficient Visible Ph.toluminescence from Self-Assembled.Ge Qd. Embed.ed.in Silica Matrix

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Ch.nese Ph.sics Letters 2017年第6期34卷 112-116页

作者： Alireza Samavati Zah.a Samavati A. F. Ismail M. h. d. Oth.an M. A. Rah.an A. K. Zulh.irun Ad.anced.Membrane Tech.ology Research.Centre Universiti Teknologi Malaysia Skudai 81310 Malaysia

Measuring th. growth.parameters of Ge quantum d.ts （Qd.） embed.ed.in SiO2/Si h.tero-structure is pre- requisite for d.veloping th. optoelectronic d.vices such.as ph.tovoltaics and.sensors. Th.ir optical properties can be tuned.by tailoring th. growth.morph.logy and.structures, wh.re th. growth.parameters＇ optimizations still need.to be explored. We d.termine th. effect of annealing temperature on surface morph.logy, structures and.optical properties of Ge//SiO2//Si h.tero-structure. Samples are grown via rf magnetron sputtering and.subsequent ch.racterizations are mad. using imaging and.spectroscopic tech.iques.

关键词： Ge Efficient Visible Ph.toluminescence from Self-Assembled.Ge Qd. Embed.ed.in Silica Matrix Qd.

Gas-Solid.Flow,Combustion Ch.racteristics,and.Gas Emissions in a 75 t/h.CFB Boiler Based.on th. CPFd.Meth.d

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Journal of Th.rmal Science 2025年第1期 323-336页

作者： h.ANG Xiankun BAI Zh.ng Zh. Xiaoli WANG Sh.osh.o mu Lin GONG Liang College of New Energy China University of Petroleum (East China) Key Laboratory of Ocean Energy Utilization and.Energy Conservation of Ministry of Ed.cation School of Energy and Power EngineeringDalian University of Technology

A 3d.simulation using Computational Particle Fluid.d.namics（CPFd. meth.d. was used.to calculate coal combustion in a 75 t/h.ind.strial-scale circulating fluid.zed.bed.CFB） *** ch.racteristics,gas-solid.flow ch.racteristics,and.gaseous pollutant emissions of CFB boilers from combustion ignition to stable operation were systematically evaluated.in th.s *** sh.w th.t th. temperature d.stribution is relatively uniform th.ough.ut th. *** th. combustion process unfold. with.n th. boiler,th. gas composition curve strikingly portrays th. inverse correlation between CO2and.*** th. combustion reaction progresses,it becomes evid.nt th.t th. concentration of CO2progressively increases,wh.le th. concentration of O2concurrently *** inverse relationsh.p und.rscores th. fund.mental combustion reaction,wh.re carbon-based.fuels react with.oxygen to prod.ce carbon d.oxid. and.release ***,a compreh.nsive analysis h.s revealed.th.t,from ignition to stable combustion,both.nitric oxid.（NO） and.sulfur d.oxid.（SO2） emissions exh.bit a d.clining *** red.ction in pollutant generation is attributed.to th. improvement in combustion *** complete combustion lead. to lower levels of unburned.h.d.ocarbons,wh.ch.are prone to NO ***,th. sulfur content in th. fuel is more efficiently oxid.zed.to sulfur trioxid.（SO3） or bound.in sulfates,red.cing *** stead. state in th. simulation,th. SO2mass flow rate varies significantly with.th. furnace h.igh.,grad.ally increasing from 0.07 kg·s-1at 4 m at th. bottom of th. furnace to a peak of 0.078 kg·s-1at 8 m in th. center,and.th.n d.creasing to 0.06 kg·s-1at 20m at th. top of th. furnace.

关键词：

d.meth.ltyrosine, th. Viagra of Opioid.

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Ch.mical Research.in Ch.nese Universities 2006年第2期22卷 258-262页

作者： Lawrence h. Lazarus Sh.ron d. Bryant Severo Salvad.ri Remo Geurrini Gianfranco Balboni Yuko Tsud. Yosh.o Okad. Peptid. Neuroch.mistry LCBRA National Institute of Environmental Health Sciences Research Triangle Park NC 27709 USA d.partment of Ph.rmaceutical Science University of Ferrara I-44100 Ferrara Italy d.partment of Ph.rmaceutical Science University of Ferrara I-44100 Ferrara Italy d.partment of Toxicology University of Cagliary Cagliary 109126 Italy Faculty of Ph.rmaceutical Science Kobe Gakuin University Nishi-ku Kobe 651-2180 Japan

Introd.ction Th. introd.ction of 2＇ ,6＇-d.meth.l-L＇tyrosine （d.t） at th. N-terminus of Tyr-Tic （1,2,3,4-tetra-h.d.oisoquinoline-3-carboxylic acid.）-containing δ-opioid.antagonists enh.nces receptor affinity and.in vitro bioactivity to several ord.rs of magnitud. and.its application in th. formation of ligand. with.new properties, such.as potent inverse agonism. For example, th. δ2 agonist,

关键词： d.meth.ltryrosine Opioid Agonist

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大型接地体性能的试验研究(英文)

高电压技术 2011年第11期37卷 2733-2738页

作者： d. Guo d. Lath. h. Griffith. N. h.rid.A. Ainsley A. h.d.ad National Grid Warwick UK h.gh.Voltage Energy Systems Group Cardiff University Cardiff UK

Analytical and.numerical simulation tech.iques h.ve been d.veloped.for th. calculation of earth.resistance/ imped.nce and.to estimate th. potential d.stribution in th. vicinity of earth.***,very little literature is available on experimental valid.tion of th.se calculation *** ad.ress th.s,a programme of experimental tests on various earth.electrod.s h.s been carried.out at th. lower water reservoir of a h.d.o pumped.storage power station in North.*** th.s paper,th. earth.ng test facility at d.norwig power station is d.scribed.includ.ng th. d.tails of th. experimental set *** results from experimental tests on a 5 mX5 m earth.grid.immersed.in water and.energized.und.r ac,d. and.impulse,are *** values of measured.earth.resistance/imped.nce and.water surface potential d.stributions are compared.with.th.se obtained.from analytical calculations and.d.tailed.numerical computer simulations.

关键词： earth.ng systems earth.imped.nce resistivity surface potential d.stribution