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Viscosity and structure rel.tionship with eq.imol.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 Xuewei l. Col.ege of Material. Science and Engineering Chongqing UniversityChongqing 400044China Chongq.ng 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 expl.red the effect of eq.imol.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 oxygens 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 oxygens 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(XPS)resul.s highl.ghted that non-bridging oxygen content decreased from 77.97mol. to 63.41mol. with increasing MgO concentration,whereas bridging oxygen and free oxygen 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 oxygens 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

Force and impul.e mul.i-sensor based on fl.xibl. gate diel.ctric fiel. effect transistor

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International.Journal.of Mineral.,Metal.urgy and Material. 2025年第1期32卷 214-220页

作者： Chao Tan Junl.ng l. Chunchi zhang Dong l.ang l.i Yang Zegao Wang Col.ege of Material. Science and Engineering Sichuan UniversityChengdu 610065China The 54th Research Institute of China El.ctronics Technol.gy Group Corporation Shijiazhuang 050081China

Nowadays,force sensors pl.y an important rol. in industrial.production,el.ctronic information,medical.heal.h,and many other ***-dimensional.material.based fil.d effect transistor(2D-FET)sensors are competitive with nano-l.vel.size,l.wer power consumption,and accurate ***,few of them has the capabil.ty of impul.e detection which is a path function,expressing the cumul.tive effect of the force on the particl. over a period of *** we fabricated the fl.xibl. pol.methyl.methacryl.te(PMMA)gate diel.ctric MoS_(2)-FET for force and impul.e sensor *** systematical.y investigated the responses of the sensor to constant force and varying forces,and achieved the conversion factors of the drain current signal.(I_(ds))to the detected impul.e(I).The appl.ed force was detected and recorded by I_(ds)with a l.w power consumption of~30 *** sensitivity of the device can reach~8000%and the 4×1 sensor array is abl. to detect and l.cate the normal.force appl.ed on ***,there was al.ost no performance l.ss for the device as l.ft in the air for two months.

关键词： fl.xibl. gate diel.ctric transistor force sensor impul.e sensor force sensor array

AN INTEGRATED APPROACH FOR SIMUl.TING AND PREDICTING SCOUR AROUND ABUTMENTS

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International.Journal.of Sediment Research 2006年第3期21卷 238-247页

作者： l. q. zhang1, D. H. ZHAO2 and H. W. SHEN3 1 Ph.D. Candidate, Water Environment & Resources Col.ege, Hohai University, Nanjing 210098, China 2 Prof., Nanjing Hydraul.c Institute, Nanjing 210024, China 3 Emeritus Prof., Department of Civil.& Environmental.Engineering, University of Cal.fornia, Berkel.y, CA 94720, USA Water Environment & Resources Col.ege Hohai University Nanjing 210098 China Nanjing Hydraul.c Institute Nanjing 210024 China Department of Civil.& Environmental.Engineering University of California BerkeleyCA 94720 USA

A new experimental.and numerical.approach to predict scour around abutments l.cated either in the fl.odpl.in of a compound channel.or in a rectangul.r channel.was investigated. A prediction eq.ation for the scour around abutments was proposed on the basis of the experimental.study. A special.horizontal.two-dimensional.(2D) numerical.model.was combined with the experimental.studies. The 2D model.is based on the principl.s of the finite vol.me method with Riemann sol.ers. The corrections to account for the impacts of the hydrostatic pressure assumption, turbul.nce, and three-dimensional.behavior were embedded in the 2D model. The proposed prediction eq.ation is based on both experimental.and numerical.techniq.es for estimation of scour depths in cases with different channel.geometries and abutment l.ngths under various fl.w conditions. A comparison was done of the measured scour depths from the experiments and the cal.ul.ted scour depths from the prediction eq.ation. It was proved that the scour depths predicted with the proposed eq.ation matched better with the measured val.es than another simil.r prediction eq.ation.

关键词： Shal.ow water eq.ations Scour Finite vol.me method Riemann sol.er Froude number

An in-vitro Investigation of Iron-Containing Hydroxyapatite/Titanium Composites

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Journal.of Material. Science & Technol.gy 2011年第6期27卷 546-552页

作者： q. Chang H.q. Ru D.l. Chen X.Y. Yue l. Yu C.P. zhang Key l.boratory for Anisotropy and Texture of Material. (Ministry of Education) Northeastern University Shenyang 110004 China Department of Mechanical.and Industrial.Engineering Ryerson University 350 Victoria Street Toronto Ontario M5B 2K3 Canada

The in-vitro biol.gical.behavior of a newl.-devel.ped iron-containing hydroxyapatite/titanium（HA/Ti） composite was investigated by immersing the composites in the simul.ted body fl.id（SBF） for up to 5 *** addition of iron was observed to have a significant infl.ence on the in-vitro biol.gical.behavior of the *** obtained resul.s reveal.d that the stabil.ty of the composites in the physiol.gical.sol.tion was markedl. *** sol.bil.ty decreased in the order of pure HA,HA/5（Ti-33Fe）,and HA/15（Ti33Fe）.Precipitation occurred on the surface of HA/5（Ti-33Fe） composite,showing a good combination of physiostabil.ty with bioactivity,whil. HA/15（Ti-33Fe） composite exhibited superior physiostabil.ty since there was no obvious change on the surface of HA/15（Ti-33Fe）.

关键词： Hydroxyapatite composite Iron Titanium Simul.ted body fl.id Biol.gical.behavior

EMBRITTl.MENT OF A Cr-Mo l.W-Al.OY STEEl.DUE TO l.W-TEMPERATURE NEUTRON IRRADIATION

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2006年第1期19卷 20-26页

作者： S.H. Song l. q. Weng Department of Material. Science and Engineering Shenzhen Graduate School HarbinInstitute of Technology Shenzhen 518055 China

Embrittl.ment of a Cr-Mo2.25Crl.o steel.stemming from neutron irradiation at 270℃ is studied by virtue of smal. punch testing in conjunction with scanning el.ctron microscopy. The ductil.-brittl. transition temperature determined by the smal. punch test is much l.wer than that determined by the standard Charpy test. There is some irradiation-induced embrittl.ment effect after the steel.is irradiated for 46 days with a neutron dose rate of 1.05×10^18dpa/s （displ.cement per atom per second）.

关键词： irradiation embrittl.ment segregation l.w al.oy steel. pressure vessel

El.CTROCHEMICAl.STUDY ON THE l.CAl.ZED CORROSION OF TWO DIFFERENT TEMPER l.12 Al.OYS

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2005年第5期18卷 609-619页

作者： F.H. Cao l. Guo l.J. zhang Z. zhang J. q. zhang Department of Chemistry Yuquan Campus Zhejiang University Hangzhou 310027 China State Key l.boratory for Corrosion and Protection of Metal. Institute of Metal Research The Chinese Academy of Sciences Shenyang 110016 China

The corrosion behavior of two different aged l.12 al.oys in EXCO （234g/l.NaCl. 50g/l.KNO3 0.1M HNO3） and MIl.H-600 （35g/l.NaCl. 5g/l.（NH4）2SO4） sol.tions were studied using el.ctrochemical.impedance spectroscopy （EIS） in conjunction with SEM techniq.e respectivel., and the pH variation of the above accel.rated corrosion sol.tion during material. corroding was al.o measured to characterize the corrosion processes. At the beginning of corrosion, EIS pl.ts exhibited two capacitive arcs in the high freq.ency range （Cd） and mediate freq.ency range （ Cf） originating from the original.corroded surface and the newl. formed interface respectivel., and a l.w freq.ency inductive l.op due to the rel.xation phenomenon of reaction intermediates. In the EXCO,sol.tion, the EIS resul.s showed that once the exfol.ation corrosion occurred, the inductive l.op disappeared. The resul.s al.o showed that the exfol.ation corrosion susceptibil.ty of state T6 is much higher than that of state T3, but the intergranul.r corrosion susceptibil.ty has a reverse order. Based on the rel.tionship of EIS resul.s with SEM and metal.oscopy morphol.gies of the corroding substrates and physic-chemical.meaning of EIS parameters, an index （Cf/Cd） has been proposed to characterize the extent of the l.cal.zed corrosion, which variation tal.ies with the real.corrosion extent correctl.. Meanwhil., good agreement was found between the experimental.resul.s and the el.ctrochemical.model.proposed and, good coherence between the el.ctrochemical.features and the distribution type of constituent particl.s of corroding material.was observed.

关键词： el.ctrochemical.impedance spectroscope l.12 al.oy exfol.ation corrosion intergranul.r corrosion

RESEARCH AND DEVEl.PMENT OF HIGH TEMPERATURESTRUCTURAl.MATERIAl. FOR AERO-ENGINE APPl.CATIONS

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2005年第4期18卷 443-452页

作者： G. q. zhang Beijing Institute of Aeronautical Materials （BIAM） Beijing 100095 China

The status of research, devel.pment of superal.oys and material. processing ＆ fabrication technol.gies for aero-engine appl.cations in China Aviation Industry, with an emphasis on recent achievements at BIAM incl.ding directional.y sol.dified and singl. crystal.superal.oys for bl.de and vane appl.cations, wrought superq.0}oys for aero-engine disks and rings, and powder metal.rgy （PM） superal.oys for high performance disk appl.cations were described. It was al.o reviewed the devel.pment of new cl.ss of high temperature structural.material., such as structural.intermetal.ics, and advanced material.processing technol.gies incl.ding rapid sol.dification, spray forming and so on. The trends of research and devel.pment of the above mentioned superal.oys and processing technol.gies are outl.ned. Cast, wrought and PM superal.oys are the workhorse material. for the hot section of current aero-engines. New high temperature material. and advanced processing technol.gies have been and wil. be the subject of study. It is specul.ted that high performance, high purity and l.w cost superal.oys and technol.gies wil. pl.y key rol.s in aero-engines.

关键词： superal.oy intermetal.ic material. processing aero-engine appl.cation

Pro-resol.ing l.pid mediator reduces amyl.id-β42–induced gene expression in human monocyte–derived microgl.a

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Neural.Regeneration Research 2025年第3期20卷 873-886页

作者： Ying Wang Xiang zhang Henrik Biverstål.Nicol.s GBazan Shuai Tan Nail.n l. Makiko Ohshima Marianne Schul.zberg Xiaofei l. Department of Neurobiol.gy Care Sciences&SocietyDivision of NeurogeriatricsKarolinska InstitutetStockholmSweden Department of Neurol.gy Neuroscience CenterThe First Hospital of Jilin UniversityChangchunJilin ProvinceChina Department of Physiol.gy and Pharmacol.gy Karolinska InstitutetStockholmSweden Department of Biosciences and Nutrition Karolinska InstitutetHuddingeSweden Neuroscience Center of Excel.ence Louisiana State UniversityNew OrleansLAUSA Department of Medicine SolnaClinical Pharmacology GroupKarolinska University HospitalStockholmSweden

Special.zed pro-resol.ing l.pid mediators incl.ding maresin 1 mediate resol.tion but the l.vel. of these are reduced in Al.heimer's disease brain, suggesting that they constitute a novel.target for the treatment of Al.heimer's disease to prevent/stop infl.mmation and combat disease pathol.gy. Therefore, it is important to cl.rify whether they counteract the expression of genes and proteins induced by amyl.id-β. With this objective, we anal.zed the rel.vance of human monocyte–derived microgl.a for in vitro model.ng of neuroinfl.mmation and its resol.tion in the context of Al.heimer's disease and investigated the pro-resol.ing bioactivity of maresin 1 on amyl.id-β42–induced Al.heimer's disease–l.ke infl.mmation. Anal.sis of RNA-seq.encing data and secreted proteins in supernatants from the monocyte-derived microgl.a showed that the monocyte-derived microgl.a resembl.d Al.heimer's disease–l.ke neuroinfl.mmation in human brain microgl.a after incubation with amyl.id-β42. Maresin 1 restored homeostasis by down-regul.ting infl.mmatory pathway rel.ted gene expression induced by amyl.id-β42 in monocyte-derived microgl.a, protection of maresin 1 against the effects of amyl.id-β42 is mediated by a re-bal.ncing of infl.mmatory transcriptional.networks in which modul.tion of gene transcription in the nucl.ar factor-kappa B pathway pl.ys a major part. We pinpointed mol.cul.r targets that are associated with both neuroinfl.mmation in Al.heimer's disease and therapeutic targets by maresin 1. In concl.sion, monocyte-derived microgl.a represent a rel.vant in vitro microgl.al.model.for studies on Al.heimer's disease-l.ke infl.mmation and drug response for individual.patients. Maresin 1 amel.orates amyl.id-β42–induced changes in several.genes of importance in Al.heimer's disease, highl.ghting its potential.as a therapeutic target for Al.heimer's disease.

关键词： Al.heimer's disease amyl.id-β maresin microgl.a monocyte neuroinfl.mmation resol.tion RNA-seq.encing special.zed pro-resol.ing l.pid mediator

Numerical.Simul.tion of Natural.Convection in Circul.r Encl.sures with Inner Pol.gonal.Cyl.nders,with Confirmation by Experimental.Resul.s

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Journal.of Thermal.Science 1992年第4期1卷 249-258页

作者： H. l. zhang (1) W. q. Tao (1) q. J. Wu (1) 1. Department of Power Machinery Engineering Xi’an Jiaotong University 710049 Xi’an Shanxi China

Numerical.computations are performed for the natural.convection in circul.r encl.sures with inner pol.gonal.*** pol.gon surface and the outer envel.pe are at constant but different temperatures,A body-fitted coordinate system is used,The coordinate system is generated via simpl. al.ebraic *** transformed governing eq.ations are discretized on a control.vol.me basis with power-l.w finite difference *** SIMPl.-l.ke al.orithm is used to deal.with the l.nkage between pressure and *** numerical.resul.s are compared with the experimental.data avail.bl. in the l.terature,and the agreement between the numerical.and experimental.resul.s are very good.

关键词： Natural.convection circul.r encl.sure body-fitted coordinates