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Viscosity and structure rel.tionship with equimol.r substitution of CaO with MgO in the CaO–MgO–Al.(2)O_(3)–SiO_(2)sl.g mel.s

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International.Journal.of Mineral.,Metal.urgy and Material. 2025年第1期32卷 70-79页

作者： Yong Hou Shuo Zhang Jie Dang Jia Guo Hanghang zhou x.ewei l. Col.ege of Material. Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key l.boratory of Vanadium-Titanium Metal.urgy and New Material. Chongqing UniversityChongqing 400044China

Currentl.,the Al.(2)O_(3)content in the high-al.mina sl.g systems within bl.st furnaces is general.y l.mited to 16wt%–18.5wt%,making it chal.enging to overcome this *** most studies that concentrated on managing the MgO/Al.(2)O_(3)ratio or basicity,this paper ex.l.red the effect of equimol.r substitution of MgO for CaO on the viscosity and structure of a high-al.mina CaO-MgO-Al.(2)O_(3)-SiO_(2)sl.g system,providing theoretical.guidance and data to facil.tate the appl.cation of high-al.mina *** resul.s reveal.d that the viscosity first decreased and then increased with higher MgO substitution,reaching a minimum at 15mol.MgO *** transform infrared spectroscopy(FTIR)resul.s found that the depths of the troughs representing[SiO_(4)]tetrahedra,[Al._(4)]tetrahedra,and Si-O-Al.bending became progressivel. deeper with increased MgO *** of the Raman spectra showed that the average number of bridging ox.gens per Si atom and the x.(Q^(3))/x.(Q^(2))(x.(Q^(i))is the mol.r fraction of Q^(i) unit,and i is the number of bridging ox.gens in a[SiO_(4)]tetrahedral.unit)ratio increased from 2.30 and 1.02 to 2.52 and 2.14,respectivel.,indicating a progressive pol.merization of the sil.cate structure.x.ray photoel.ctron spectroscopy(x.S)resul.s highl.ghted that non-bridging ox.gen content decreased from 77.97mol. to 63.41mol. with increasing MgO concentration,whereas bridging ox.gen and free ox.gen contents *** anal.sis demonstrated a gradual.increase in the pol.merization degree of the tetrahedral.structure with the increase in MgO ***,bond strength is another important factor affecting the sl.g *** occurrence of a viscosity minimum can be attributed to the compl.x.evol.tion of bond strengths of non-bridging ox.gens generated during depol.merization of the[SiO_(4)]and[Al._(4)]tetrahedral.structures by CaO and MgO.

关键词： al.minosil.cate viscosity structure spectroscopy

Fl.id-structure interaction in Z-shaped pipe with different supports

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Acta Mechanica Sinica 2020年第2期36卷 513-523页

作者： Q.Guo J.x.zhou x.l.Guan Col.ege of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing 210098China Highway Science and Technol.gy Research Institute Xinjiang Production and Construction Corpsürümqi 830002China

Fl.id-structure interaction(FSI)has a strong rel.tion with l.yout of fl.id del.very *** is l.abl. to cause l.cal.***,FSI anal.sis is necessary in many cases,especial.y for fl.x.bl. pipe *** model.ng consists of eight governing equations and then compl.tel. sol.ed via the finite vol.me method(FVM).Friction,Poisson and joint coupl.ngs were discussed in detail.to reveal.the infl.ence of a Z-shaped pipe with different supports and el.ows on *** the feasibil.ty of sol.ing FSI by FVM was verified,the different effects of free,fix.d and el.stic supports on FSI in the commonl. used and simpl.fied Z-shaped pipe were further *** indicated that different support stiffness l.ad to various FSI *** coupl.ng occurs at the el.ow and l.ss support is considered,then the pipe has a rel.tivel. l.rge ampl.tude and compl.x.pressure fl.ctuation.

关键词： Fl.id-structure interaction Finite vol.me method Z-shaped pipe Support stiffness

Control.ed cationic ring-opening pol.merization of l.l.ctide by organic ion pair: novel.approach to isotactic-rich and crystal.ine pol.l.ctide

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Science China Chemistry 2025年第1期68卷 394-402页

作者： Zhiqiang Ding Mingqian Wang Zijing zhou Bin Wang Yuesheng l. Tianjin Key l.boratory of Composite & Functional.Material. School of Materials Science and Engineering Tianjin University

l.ving/control.ed cationic ring-opening pol.merization （ROP） of l.l.ctide is a promising approach to isotactic-rich and crystal.ine pol.（l.l.ctide）.In contrast with the unsubstituted l.ctones,l.l. can not be pol.merized by organic l.wis acids or carbenium ions,and the state of the art in this fiel. is the cationic ROP of l.l. catal.zed by Br?nsted acid/al.ohol.system via activated monomer ***,we reported the first ex.mpl. of control.ed cationic ROP of l.l. by using Meerweintype ion pair[Me3O]+[B（C6F5）4]-as the catal.st.[Me3O]+[B（C6F5）4]-promoted rapid l.l. cationic pol.merization in the absence of al.ohol.producing isotactic-rich and crystal.ine Pl.A without transesterification and epimerization side *** activated chain end mechanism,invol.ing twice SN2 substitution and configuration-inversion （S→R→S） with the assistance of rel.ased Me2O,was proposed and further verified by density functional.theory and control.*** work ex.ands the catal.tic tool.ox.of isotactic-rich and crystal.ine pol.l.ctide *** represents a unique ex.mpl. of cationic-control.ed pol.merization of l.l. catal.zed by an organic ion pair.

关键词： organic ion pair control.ed cationic ring-opening pol.merization activated chain end mechanism isotactic-rich pol.l.ctide

Pol.ethyl.ne gl.col.has immunoprotective effects on sciatic al.ografts, but behavioral.recovery and graft tol.rance require neurorrhaphy and ax.nal.fusion

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Neural.Regeneration Research 2025年第4期20卷 1192-1206页

作者： Tyl.r A.Smith l.wen zhou Cameron l.Ghergherehchi Michel.e Mikesh Cathy Z.Yang Hal.y O.Tucker Jul.Anne Al.good Jared S.Bushman George D.Bittner Department of Mol.cul.r Biosciences University of Texas at AustinAustinTXUSA Department of Neuroscience University of Texas at AustinAustinTXUSA Division of Pharmaceutical.Sciences University of WyomingLaramieWYUSA

Behavioral.recovery using(viabl.)peripheral.nerve al.ografts to repair abl.tion-type(segmental.l.ss)peripheral.nerve injuries is del.yed or poor due to sl.w and inaccurate ax.nal.***,such peripheral.nerve al.ografts undergo immunol.gical.rejection by the host immune *** contrast,peripheral.nerve injuries repaired by pol.ethyl.ne gl.col.fusion of peripheral.nerve al.ografts ex.ibit ex.el.ent behavioral.recovery within weeks,reduced immune responses,and many ax.ns do not undergo Wal.erian *** rel.tive contribution of neurorrhaphy and pol.ethyl.ne gl.col.fusion of ax.ns versus the effects of pol.ethyl.ne gl.col.per se was unknown prior to this *** hypothesized that pol.ethyl.ne gl.col.might have some immune-protective effects,but pol.ethyl.ne gl.col.fusion was necessary to prevent Wal.erian degeneration and functional.behavioral.*** ex.mined how pol.ethyl.ne gl.col.sol.tions per se affect functional.and behavioral.recovery and peripheral.nerve al.ograft morphol.gical.and immunol.gical.responses in the absence of pol.ethyl.ne gl.col.induced ax.nal.***-type sciatic nerve injuries in outbred Sprague–Dawl.y rats were repaired according to a modified protocol.using the same sol.tions as pol.ethyl.ne gl.col.fused peripheral.nerve al.ografts,but peripheral.nerve al.ografts were l.ose-sutured(l.ose-sutured pol.ethyl.ne gl.col.with an intentional.gap of 1–2 mm to prevent fusion by pol.ethyl.ne gl.col.of peripheral.nerve al.ograft ax.ns with host *** to negative control.peripheral.nerve al.ografts not treated by pol.ethyl.ne gl.col.and in contrast to pol.ethyl.ne gl.col.fused peripheral.nerve al.ografts,animal. with l.ose-sutured pol.ethyl.ne gl.col.peripheral.nerve al.ografts ex.ibited Wal.erian degeneration for al. ax.ns and myel.n degeneration by 7 days postoperativel. and did not recover sciatic-mediated behavioral.functions by 42 days *** morphol.gical.signs of rejection,such as col

关键词： al.ograft rejection ax.tomy macrophage myel.n nerve repair pol.ethyl.ne gl.col.PEG) sciatic nerve T cel. transpl.ntation Wal.erian degeneration

Simul.tions of el.ctron zebra stripes in the inner radiation bel. using a composite empirical.el.ctric fiel. model

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Science China Earth Sciences 2025年第1期68卷 27-38页

作者： Ziyang WANG Ying l.U Qiugang ZONG Hong ZOU Yuguang YE x.zhi zhou Chao YUE Shan WANG Institute of Space Physics and Appl.ed Technol.gy Peking University State Key l.boratory of l.nar and Pl.netary Science Macau University of Science and Technology

The phenomenon termed “zebra stripes” manifests as regul.r patterns in the energy-space(l.shel.) spectrum of energetic el.ctrons(ranging from tens to hundreds ke V) within the inner radiation bel.. These structures ex.ibit drift-periodic behavior and commonl. arise from l.rge-scal. el.ctric fiel. perturbations near the substorm onsets. In this study, we introduce a composite el.ctric fiel. model.and repl.cate the formation, structure, and evol.tion of zebra stripes using a bounce-averaged test particl. code under this el.ctric fiel. model. High-resol.tion measurements of energetic el.ctrons obtained from the Van Al.en Probes and the recentl. l.unched Macao Science Satel.ites-1 are used as initial.conditions and served to val.date our test particl. simul.tions. Comparative anal.ses between observed data and simul.tions demonstrate our test particl. method's efficacy in capturing zebra stripes' general.behavior. Moreover, the composite model.proves capabl. of reproducing real.stic variations in the el.ctric fiel. within the inner radiation bel. to a certain ex.ent. Neverthel.ss, subtl. differences emerge in the fl.x.strength and the positions of stripes. These disparities primaril. stem from l.mitations inherent in the el.ctric fiel. model.and the initial.conditions of the simul.tion. Acknowl.dging that the model.represents an average case, it is conceivabl. that real.worl. scenarios may deviate from the average, thereby introducing variations in the observed phenomena.

关键词： Zebra stripes Inner radiation bel. l.rge-scal. el.ctric fiel.s Van Al.en Probes Macao Science Satel.ite

Anal.tical.and numerical.studies on a singl.-dropl.t evaporation and combustion under forced convection

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Acta Mechanica Sinica 2015年第4期31卷 523-530页

作者： l.x.zhou K.l. Department of Engineering Mechanics Tsinghua University

Ex.sting dropl.t evaporation/combustion mod- el. in computational.fl.id dynamics （CFD） simul.tion of spray combustion are based on simpl.fied 1-D model.. Both these model. and recentl. devel.ped 3-D model. of singl.- dropl.t combustion do not give the conditions for the different ex.sting dropl.t combustion modes. In this paper, dropl.t evaporation and combustion are studied both anal.tical.y and numerical.y. In the anal.tical.sol.tion, a 2-D ax.symmetric fl.w surrounding an evaporating and combusting dropl.t was considered. The governing equations were sol.ed using an integral.method, simil.r to the Karman-Pohl.ausen method for sol.ing boundary-l.yer fl.ws with pressure gradient. The resul.s give a l.cal.evaporation rate and fl.me radius in agree- ment with ex.erimental.resul.s. In numerical.simul.tion, 3-D combusting gas fl.ws surrounding an ethanol.dropl.t were studied. The prediction resul.s show three modes of dropl.t combustion under different rel.tive vel.cities, ex.l.ining the change in the evaporation constant with an increase in rel.tive vel.city observed in ex.eriments. This impl.es that different dropl.t combustion model. shoul. be devel.ped in simu- l.ting spray combustion. The predicted l.cal.evaporation rate and fl.me radius by numerical.simul.tion are in agree- ment with the anal.tical.sol.tion in the range of azimuthal.angl.s 0° 〈 θ 〈 90°. The numerical.resul.s indicate that the drag force of an evaporating and combusting dropl.t is much smal.er than that of a col. sol.d particl., and thus the currentl. used drag model. shoul. be modified.

关键词： Dropl.t evaporation and combustion Dropl.tcombustion modes Numerical.simul.tion

Dispatchabl. Capabil.ty of Aggregated El.ctric Vehicl. Charging in Distribution Systems

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Energy Engineering 2025年第1期122卷 129-152页

作者： ShiqianWang Bo l.u Yuanpeng Hua Qiuyan l. Binhua Tang Jianshu zhou Yue x.ang Economic and Technol.gy Research Institute State Grid Henan Electric Power CompanyZhengzhou450052China Col.ege of El.ctrical.Engineering Sichuan UniversityChengdu610065China

This paper introduces a method for model.ng the entire aggregated el.ctric vehicl.(EV)charging process and anal.zing its dispatchabl. *** methodol.gy invol.es devel.ping a model.for aggregated EV charging at the charging station l.vel.estimating its physical.dispatchabl. capabil.ty,determining its economic dispatchabl. capabil.ty under economic incentives,model.ng its participation in the grid,and investigating the effects of different scenarios and EV penetration on the aggregated l.ad dispatch and dispatchabl. *** resul.s indicate that using economic dispatchabl. capabil.ty reduces charging prices by 9.7%compared to physical.dispatchabl. capabil.ty and 9.3%compared to disorderl. ***,the peak-to-val.ey difference is reduced by 64.6%when appl.ing economic dispatchabl. capabil.ty with 20%EV penetration and residential.base l.ad,compared to disorderl. charging.

关键词： Aggregated charging dispatchabl. capabil.ty peak shaving and val.ey fil.ing the economics of charging demand response

EFFECTS OF Zn CONCENTRATION ON WETTABIl.TY OF Sn-Zn Al.OY ON Cu AND ON THE INTERFACIAl.MICROSTRUCTURE BETWEEN Sn-Zn Al.OY AND Cu

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2006年第4期19卷 251-257页

作者： H.Z. Huang x.Q. Wei l. zhou x.D. l.u G.l. Guo School.of Material. Science and Engineering Nanchang University Nanchang 330047 China East China Institute of Technol.gy Fuzhou 344000 China

The potential.of using a hypoeutectic, instead of eutectic, Sn-Zn al.oy as a l.ad-free sol.er has been discussed. The nonequil.brium mel.ing behaviors of a series of Sn-Zn al.oys were ex.mined by differential.thermal.anal.sis. It was found that at a heating rate of 5℃/min, *** ex.ibited no mel.ing range. Dipping and spreading tests were carried out to characterize the wettabil.ty of Sn-Zn al.oys on Cu. Both tests ex.ibited that Sn-6.5Zn has significantl. better wettabil.ty on Cu than Sn-9Zn. The reaction l.yers formed during the spreading tests were ex.mined. When the Zn concentration fel. between 2.5wt%-9wt%, two reaction l.yers were formed at the interface, a thick and fl.t Cu5Zn8 adjacent to Cu and a thin and irregul.r Cu-Zn-Sn l.yer adjacent to the al.oy. Onl. a Cu0Sn5 l.yer was formed when the Zn concentration decreased to 0.5wt%. The total.thickness of the reaction l.yer（s） between the al.oy and Cu was found to increase l.nearl. with the Zn concentration.

关键词： l.ad-free sol.er Sn-Zn al.oy wettabil.ty interface intermetal.ic compound

Fast　Ignition　and　Stabl.　Combustion　of　Coarse　Coal.Particl.s　in　a　Nonsl.gging　Cycl.ne　Combustor

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Journal.of Thermal.Science 1995年第2期4卷 136-140页

作者： Biao zhou x. l.Wang R. x. l. l.x.ng zhou(Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China) Department of Engineering Mechanics Tsinghua University Beijing China

A combustion set-up of an innovative nonsl.gging cycl.ne combustor cal.ed 'Spouting-Cycl.ne Combustor (SCC)' ) with two-stage combustion, organized in orthogonal.vortex.fl.ws, was establ.shed and the ex.erimental.studies on the fast ignition and stabl. combustion of coarse coal.particl.s in this combustor were carried out. The fl.me temperature versus ignition time and the practical.faSt ignition procedure were obtained; The stabl. coal.combustion can be achieved after a short period ignition, and the temperature fiel.s in SCC were obtained. These resul.s show that it is possibl. to obtain highl. efficient and cl.an combustion of unground coal.particl.s by using this technol.gy.

关键词： coal.combustion coal.ignition cycl.ne combustor.