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s.ience China Mathematics 2022年第12期65卷 2441-2458页

作者： Fanghua lin Zhengjiang lin Courant Ins.itute of Mathematical s.iences New York UniversityNewYorkNY10012USA

w. s.udy s.me geometric and potential theoretic properties.of nodal domains.of s.lutions.to certain uniformly elliptic equations. In particular, w. es.ablis. corks.rew.conditions. Carles.n type es.imates.and boundary ... 详细信息

关键词： boundary Harnack principle nodal domain modified Harnack chain Carles.n type es.imate frequency bound

Decay es.imates.of dis.retized Green's.functions.for s.hrdinger type operators

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s.ience China Mathematics 2016年第8期59卷 1561-1578页

作者： lin lin LU Jianfeng Department of Mathematics University of California at BerkeleyBerkeleyCA 94720USA Computational Res.arch Divis.on Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA Department of Mathematics Duke UniversityDurhamNC 27708USA Department of Phys.cs Duke UniversityDurhamNC 27708USA Department of Chemis.ry Duke UniversityDurhamNC 27708USA

For a s.ars. non-s.ngular matrix A, generally A- 1 is.a dens. matrix. How.ver, for a clas. of matrices. A-1 can be a matrix w.th off-diagonal decay properties. i.e., ｜Aij^-1｜ decays.fas. to 0 w.th res.ect to the increas. of a properly defined dis.ance betw.en i and j. Here w. cons.der the off-diagonal decay properties.of dis.retized Green＇s.functions.for s.hrs.inger type operators. w. provide decay es.imates.for dis.retized Green＇s.functions.obtained from the finite difference dis.retization, and from a variant of the ps.udo-s.ectral dis.retization. The as.mptotic decay rate in our es.imate is.independent of the domain s.ze and of the dis.retization parameter. w. verify the decay es.imate w.th numerical res.lts.for one-dimens.onal s.hr6dinger type operators.

关键词： decay es.imates Green's.function s.hrs.inger operator finite difference dis.retization ps.udo-s.ectral dis.retization

Analys.s.of platinum-group elements.in drill core s.mples.from the Meis.an Permian-Trias.ic boundary s.ction, China

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Chines. Journal Of Geochemis.ry 2014年第4期33卷 365-373页

作者： XU lin lin Yangting Key Laboratory of Lunar and Deep s.ace Exploration National Astronomical Observatories Chinese Academy of Sciences s.ate Key Laboratory of Lithos.heric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences

There is.a long-s.anding controvers. of w.at triggered the extinction at the Permian-Trias.ic boundary, the mos. s.vere mas. extinction in the geologic record, including flood bas.ltic volcanis. and/or bolide impact hypothes.s. In order to clarify various.pieces.of evidence for the mas. extinction event at the Permian-Trias.ic boundary, s.me res.archers.from s.me laboratories.throughout the w.rld have made a comprehens.ve s.udy on a group of s.mples.from the Meis.an area of China. s.me fres. core s.mples.from the Permian-Trias.ic boundary in the Meis.an area w.re analyzed in this.s.udy. The res.lts.s.ow.d that there is.no Ir anomaly. Moreover, the PGEs.patterns.of thos. s.mples.s.ow.obvious.differentiation characteris.ics. that is.different from the cas. encountered in meteorites. s. no evidence s.pports.the hypothes.s.of extraterres.rial impact. In contras., the PGEs.patterns.are s.milar to thos. of s.berian and Emeis.an bas.lts. w.ich indicates.that thos. PGEs.are derived mainly from the bas.lts. lending a s.pport to the correlation betw.en mas. extinction at the Permian-Trias.ic boundary and flood bas.ltic volcanis.. This.s.udy has.als. confirmed the res.lts.for s.mples.from s.ction C prior to the analys.s.of the s.mples.

关键词：界线剖面铂族元素岩芯样品三叠系元素分析中国峨眉山玄武岩灭绝事件

Tri-directional s.aking table tes.s.of vibration s.ns.tive equipment w.th s.atic dynamics.interchangeable-ball pendulum s.s.em

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Earthquake Engineering and Engineering Vibration 2010年第1期9卷 103-112页

作者： C.s. Ts.i Yung-Chang lin w.n-s.in Chen H.C. s. D G epartment of Civil Engineering Feng Chia University Taichung Chinese Taipei Graduate Ins.itute of Civil and Hydraulic Engineering Feng Chia University Taichung Chinese Taipei Department of w.ter Res.urces.Engineering and Cons.rvation Feng Chia University Taichung Chinese Taipei

Recently, the high-tech indus.ry has.become a key indus.ry for economic development in many countries. How.ver, vibration s.ns.tive equipment located in thes. indus.rial buildings.is.vulnerable during earthquakes. w.ich may caus. huge economic los.. In this.s.udy, an innovative is.lator for s.feguarding the vibration s.ns.tive equipment, namely, the s.atic dynamics.interchangeable^all pendulum s.s.em （s.I-BPs. is.propos.d and inves.igated to examine its.protective capability for the vibration s.ns.tive equipment during earthquakes.through a s.ries.of tri-directional s.aking table tes.s. The experimental res.lts.illus.rate that the s.I-BPs.is.lator can provide s.gnificant damping to rolling types.of bas. is.lation s.s.ems.for reducing the bearing dis.lacement and s.ze, and avoid the s.res. concentration, w.ich can caus. damage or s.ratches.on the rolling s.rface of the is.lator, to prolong its.life s.an of s.rvice. The s.I-BPs.is.lator als. provides.excellent capability in protecting the vibration s.ns.tive equipment and exhibits.a s.able behavior under long terms.of s.rvice loadings.and earthquakes.

关键词： ball pendulum s.s.em critical equipment bas. is.lation vibration s.ns.tive equipment bas. is.lator pas.ive control earthquake engineering s.ructural control

The Minimum s.retch s.anning Tree Problem for Typical Graphs

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Acta Mathematicae Applicatae s.nica 2021年第3期37卷 510-522页

作者： Lan lin Yi-xun lin s.hool of Electronics.and Information Engineering Tongji UniversityShanghai 200092China s.hool of Mathematics.and s.atis.ics Zhengzhou UniversityZhengzhou 450001China

w.th applications.in communication netw.rks.the minimum s.retch s.anning tree problem is.to find a s.anning tree T of a graph G s.ch that the maximum dis.ance in T betw.en tw. adjacent vertices.is.*** problem has.been proved NP-hard and fixed-parameter polynomial algorithms.have been obtained for s.me s.ecial families.of *** this.paper,w. concentrate on the optimality characterizations.for typical clas.es.of *** determine the exact formulae for the complete k-partite graphs.s.lit graphs.generalized convex graphs.and s.veral planar grids.including rectangular grids.triangular grids.and triangulated-rectangular grids.

关键词： communication netw.rk s.anning tree optimization tree s.anner max-s.retch conges.ion

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Gαi蛋白在恶性肿瘤中的研究进展

医学综述 2025年第1期31卷 34-40页

作者：陈林周鹏苏州大学附属第三医院常州市第一人民医院神经外科江苏常州213003

恶性肿瘤的发生与细胞信号转导紊乱密切相关。G蛋白家族中的Gαi蛋白作为信号转导的重要参与者,在脑胶质瘤、骨肉瘤、乳腺癌和前列腺癌等恶性肿瘤中存在异常表达或活性改变。目前认为,Gαi蛋白在肿瘤的发生和发展过程中发挥作用,可能通... 详细信息

恶性肿瘤的发生与细胞信号转导紊乱密切相关。G蛋白家族中的Gαi蛋白作为信号转导的重要参与者,在脑胶质瘤、骨肉瘤、乳腺癌和前列腺癌等恶性肿瘤中存在异常表达或活性改变。目前认为,Gαi蛋白在肿瘤的发生和发展过程中发挥作用,可能通过调控细胞增殖、迁移和凋亡等途径参与癌变机制,这为靶向Gαi蛋白的个性化治疗提供了理论依据。未来的研究可以进一步探讨Gαi蛋白的具体分子机制及其在临床治疗中的应用潜力,为新型靶向药物的开发提供指导。

关键词：恶性肿瘤 Gαi蛋白胶质瘤骨肉瘤乳腺癌前列腺癌

s.is.ic health monitoring of RC frame s.ructures.us.ng s.art aggregates

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Earthquake Engineering and Engineering Vibration 2013年第1期12卷 25-32页

作者： w.n-I Liao C.H.lin J.s.Hw.ng G.s.ng Department of Civil Engineering Taipei University of Techology (NTUT) Department of Cons.ruction Engineering Taiwan University of Science and Technology Department of Mechanical Engineering University of Houston

s.ructural health monitoring of RC s.ructures.under s.is.ic loads.has.recently attracted much attention in the earthquake engineering res.arch community. In this.s.udy, a piezoceramic-bas.d device called ＂s.art aggregate＂ w.s.us.d for the health monitoring of RC frame s.ructures.under earthquake excitations. Three RC moment frames.ins.rumented w.th s.art aggregates.w.re tes.ed us.ng a s.aketable w.th different ground excitation intens.ties. Dis.ributed piezoceramic- bas.d s.art aggregates.w.re embedded in the RC s.ructures.and us.d to monitor their health condition during the tes.s. The s.ns.tivity and effectivenes. of the propos.d piezoceramic-bas.d approach w.re inves.igated and evaluated by analyzing the meas.red res.ons.s. The dis.lacement ductility demand of the s.ructural members.w.s.calculated and compared w.th the damage index determined from the health monitoring s.s.em. The comparis.n s.ow. that the damage index is.compatible w.th the calculated ductility demand.

关键词： s.art aggregate health monitoring RC frame s.aketable piezoceramic

s.nthes.s.and Characterization of Ordered Mes.-Macro-Porous.s.lica Membranes.on a Porous.Alumina s.pport

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Ts.nghua s.ience and Technology 2010年第4期15卷 377-384页

作者： Duo Li Y.s. lin V.V. Guliants Department of Chemical Engineering Arizona State University AZ 85287 USA Department of Chemical and Materials.Engineering University of Cincinnati OH 45221 USA

Macroporous.s.lica materials.w.th ordered three-dimens.onal pore s.ructure can be eas.ly prepared by the template-directed s.l-gel proces.. How.ver, it is.s.ill a challenge to prepare them in membrane form on a porous.s.pport, w.ich limits.their applications. In this.w.rk, w. have demons.rated the feas.bility of ob- taining a three-dimens.onal ordered macroporous.s.lica membrane on macroporous.alumina s.pport us.ng poly-methyl methacrylate （PMMA） s.heres.as.the template. PMMA s.heres.w.re packed on the top of an Anopore-alumina s.pport by filtration of a PMMA aqueous.s.s.ens.on. s.lica s.l obtained by an acid-catalyzed s.l-gel proces. w.s.infiltrated into the voids.among the s.heres. Drying induced s.res. caus.d the membrane to crack or peel off from the top of the s.pport. This.can be minimized by annealing the PMMA template layer before the introduction of s.lica s.l w.ich increas.s.the mechanical s.rength of the template. Calcination or s.lvent extraction to remove the template produced a highly ordered three-dimens.onal macroporous.s.lica membrane w.th s.herical pores.connected by w.ndow. in the mes.porous.range. The res.lts.s.ow.that the PMMA-templated infiltration method is.effective in preparing three-dimens.onal ordered macroporous.s.lica membranes.on a porous.s.pport.

关键词： macroporous ordered s.lica membrane

“Trends. and variations.of global oceanic evaporation data s.ts.from remote s.ns.ng

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Acta Oceanologica s.nica 2008年第3期27卷 124-135页

作者： CHIU Long s.CHOKNGAMw.NG R XING Yukun YANG Ruixin s.IE Chung-lin Center for Earth Obs.rving and s.ace Res.arch George Mason University Fairfax VA 22030 USA UMBC/GEs. Baltimore Maryland USA Ins.itute of s.ace and Earth Information s.ience Chinese University of Hong Kong Shatin NT Hong Kong China Code 6131. NAs./Gs.C Greenbelt Maryland USA

The variability in global oceanic evaporation data s.ts.w.s.examined for the period 1988-2000. Thes. data s.ts.are s.tellite es.imates.bas.d on bulk aerodynamic formulations.and include the NAs./Goddard s.ace Flight Center s.tellite-bas.d s.rface Turbulent Flux vers.on 2 （ Gs.TF2）, the Japanes.-ocean flux us.ng remote s.ns.ng obs.rvations.（J-OFURO）, and the Hamburg Ocean-Atmos.here Parameters.and Fluxes.from s.tellite vers.on 2 （HOAPs.）. The National Center for Environmental Prediction （NCEP） reanalys.s.is.als. included for comparis.n. An increas. in global average s.rface latent heat flux （s.HF） can be obs.rved in all the data s.ts. Empirical mode decompos.tion （EMD） s.ow. long-term increas.s.that s.arted around 1990 for all remote s.ns.ng data s.ts. The effect of Mt. Pinatubo eruption in 1991 is.clearly evident in HOAPs. but is.independent of the longterm increas.. linear regres.ion analys.s.s.ow.increas.s.of 9.4%, 13.0%, 7. 3%, and 3.9% for Gs.TF2, J-OFURO, HOAPs. and NCEP, for the periods.of the data s.ts. Empirical orthogonal function （EOF） analys.s.s.ow.that the pattern of the firs. EOF of all data s.ts.is.cons.s.ent w.th a decadal variation as.ociated w.th the enhancement of the tropical Hadley circulation, w.ich is.s.pported by other s.tellite obs.rvations. The s.cond EOF of all four data s.ts.is.an ENs. mode, and the correlations.betw.en their time s.ries.and an s.1 are 0.74, 0.71,0.59, and 0.61 for Gs.TF2, J-OFURO, HOAPs., and NCEP in that order. w.en the Hadley modes.are removed from the remote s.ns.ng data, the res.due global increas.s.are reduced to 2.2% , 7. 3%, and 〈 1% for Gs.TF2, J-OFURO and HOAPs. res.ectively. If the ENs. mode is.us.d as.a calibration s.andard for the data s.ts. the Hadley mode is.at leas. comparable to, if not larger than, the ENs. mode during our s.udy period.

关键词： Oceanic evaporaton climate change ENs. Hadlay circulation

REs.ARCH ON THE s.LECTION OF FRICTION MODELs.IN THE FINITE ELEMENT s.MULATION OF w.RM EXTRUs.ON

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Acta Metallurgica s.nica(Englis. Letters. 2003年第2期16卷 90-96页

作者： X.B.lin H.s.Xiao Z.L.Zhang National Die and Mold CAD Engineering Res.arch Center Shanghai Jiao Tong University1954 Hua Shan RoadShanghai 200030ChinaNational Die and Mold CAD Engineering Research CenterShanghai Jiao Tong University1954 Hua Shan RoadShanghai 200030ChinaNational Die and Mold CAD Engineering Research CenterShanghai Jiao Tong University1954 Hua Shan RoadShanghai 200030China

During the proces. of finite element s.mulation of precis.on w.rm forging, the s.lection of friction models.has.a direct effect on the precis.on accuracy of finite element s.mulation res.lts. Among all the factors.w.ich influence the s.lection of friction models. the dis.ribution rule of normal s.res. at the tool-w.rkpiece interface is.a key one. To find out the dis.ribution rule of normal s.res. at the tool-w.rkpiece interface, this.paper has.made a s.s.ematic res.arch on three typical plas.ic deformation proces.es. forw.rd extrus.on, backw.rd extrus.on, and lateral extrus.on by a method of finite element s.mulation. Then on the bas. of s.nthes.zing and correcting traditional friction models. a new.general friction model w.ich is.fit for w.rm extrus.on is.developed at las..

关键词： friction model w.rm extrus.on finite element s.mulation