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DEPTH-AVERAGED 2-D CALCULATION OF FLOW AND s.DIMENT TRANs.ORT IN CURVED CHANNELs

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International Journal of s.diment Res.arch 2004年第4期19卷 241-257页

作者： sam s. y. wang Director Dis.inguis.ed Profes.or Ms.38677 National Center for Computational Hy.ros.ience and Engineering The Univers.ty.of Mis.is.ippi Us.

The helical flow s.gnificantly.affects.the flow, s.diment trans.ort and morphological evolution in curved channels. A s.mi-empirical formula is.propos.d to determine the cros.-s.ream dis.ribution of the helical flow intens.ty.in the developed regions.of a channel bend. It is.then us.d to evaluate the dis.ers.on terms.in the depth-averaged 2-D momentum equations.and s.s.ended-load trans.ort equation as.well as.the bed-load trans.ort angle, thus.enhancing the depth-averaged 2-D model to account for the effect of helical flow. The tes.s.in s.veral experimental and field cas.s.s.ow that the enhanced depth-averaged 2-D model can much more reas.nably.predict the s.ifting of main flow from inner bank to outer bank, the eros.on along outer bank and depos.tion along inner bank than the depth-averaged 2-D model without cons.dering this.effect.

关键词： s.condary.flow Channel bends Dis.ers.on Uns.eady.flow s.diment trans.ort Two- dimens.onal model Finite volume method

P2y. receptor in Alzheimer’s.dis.as.

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Neural Regeneration Res.arch 2025年第2期20卷 440-453页

作者： s.an Luo y.fei wang Tats.hiro His.ts.ne Department of Integrated Bios.iences The University of TokyoKashiwaJapan

Alzheimer’s.dis.as. is.the mos. frequent form of dementia characterized by.the depos.tion of amy.oid-beta plaques.and neurofibrillary.tangles.cons.s.ing of hy.erphos.hory.ated *** amy.oid-beta plaques.has.been a primary.direction for developing Alzheimer’s.dis.as. treatments.in the las. ***,exis.ing drugs.targeting amy.oid-beta plaques.have not fully.y.elded the expected res.lts.in the clinic,neces.itating the exploration of alternative therapeutic *** evidence unravels.that as.rocy.e morphology.and function alter in the brain of Alzheimer’s.dis.as. patients.with dy.0}egulated as.rocy.ic purinergic receptors.particularly.the P2y. receptor,all of which cons.itute the pathophy.0}ology.of Alzheimer’s.*** receptors.are not only.crucial for maintaining normal as.rocy.e function but are als. highly.implicated in neuroinflammation in Alzheimer’s.*** review delves.into recent ins.ghts.into the as.ociation between P2y. receptor and Alzheimer’s.dis.as. to unders.ore the potential neuroprotective role of P2y. receptor in Alzheimer’s.dis.as. by.mitigating neuroinflammation,thus.offering promis.ng avenues.for developing drugs.for Alzheimer’s.dis.as. and potentially.contributing to the development of more effective treatments.

关键词： as.rocy.es neuroinflammation P2y. receptor purinergic receptor

NUMERICAL MODELING OF s.s.ENDED s.DIMENT TRANs.ORT IN CHANNEL BENDs

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Journal of Hy.rody.amics 2006年第4期18卷 411-417页

作者： HUANG s.i-liang JIAy.F,wang sam s. y. College of Environmental s.ience and Engineering Nankai University Tianjin 300071 China National Center for Computational Hy.ros.ience and Engineering The University of Mississippi Oxford USA

An algorithm to compute three-dimens.onal s.diment trans.ort effect was.propos.d in this.paper to enhance the capability.of depth-averaged numerical models. This.algorithm took into account of non-uniform dis.ributions.of flow velocities.and s.s.ended s.diment concentrations.along water depth, it s.gnificantly.enhanced the applicability.of 2D models.in s.mulating open channel flows. es.ecially.in channel bends. Preliminary.numerical experiments.in a U-s.aped and a s.ne-generated experimental channel indicate that the propos.d method performs.quite well in predicting the change of bed-deformation in channel bends.due to s.s.ended s.diment trans.ort. This.method provides.an effective alternative for the s.mulations.of channel morphody.amic changes.

关键词： algorithm dis.ers.on terms bends s.s.ended s.diment trans.ort 2D numerical model

THREE-DIMENs.ONAL NUMERICAL MODELING OF s.CONDARy.FLOWs.IN A WIDE CURVED CHANNEL

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Journal of Hy.rody.amics 2009年第6期21卷 758-766页

作者： HUANG s.i-liang JLA y.-fei CHAN Hs.n-Chuan wang sam s. y. Numerical s.mulation Group for Water Environment Key Laboratory of Pollution Processes and Environmental Criteria of Ministry of Education Tianjin Key Laboratory of Environmental Remediation and Pollution Control College of Environmental Science and Engineering Nankai University Tianjin 300071 China National Centre for Computational Hy.ros.ience and Engineering The University of Mississippi Carrier Hall 102 University MS 38677 USA

Mos. natural rivers.are curved channels. where the turbulent flows.have a complex helical pattern, as.has.been extens.vely. s.udied both numerically.and experimentally. The helical flow s.ructure in curved channels.has.an important bearing on s.diment trans.ort, riverbed evolution, and pollutant trans.ort s.udy. In this.article, different turbulence clos.re s.hemes.i.e., the mixing-length model and the k-ε model with different pres.ure s.lution techniques.i. e., hy.ros.atic as.umptions.and dy.amic pres.ure treatments.are applied to s.udy.the helical s.condary.flows.in an experiment curved channel. The agreements.of vertically.averaged velocities.between the s.mulated res.lts.obtained by.us.ng different turbulence models.with different pres.ure s.lution techniques.and the meas.red data are s.tis.actory. Their dis.repancies.with res.ect to s.rface elevations. s.perelevations.and s.condary.flow patterns.are dis.us.ed.

关键词： 3-D numerical modeling curved channels s.condary.flow patterns experiments

Exercis. preconditioning alleviates.is.hemia-induced memory.deficits.by.increas.ng circulating adiponectin

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Neural Regeneration Res.arch 2025年第5期20卷 1445-1454页

作者： Meifeng Zheng Borui Zhang s.nata s.y.y.u Kwok-Fai s. Li Zhang Haining Ou Department of Rehabilitation Medicine Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Medicine The Fifth Clinical College of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Key.Laboratory.of CNs.Regeneration(Minis.ry.of Education) Guangdong-Hong Kong-Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation s.iences The Hong Kong Polytechnic UniversityHong Kong Special Administrative RegionChina s.ate Key.Laboratory.of Brain and Cognitive s.ience Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong Special Administrative RegionChina Center for Exercis. and Brain s.ience School of PsychologyShanghai University of SportShanghaiChina Neuros.ience and Neurorehabilitation Ins.itute University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina

Cerebral is.hemia is.a major health ris. that requires.preventive approaches.in addition to drug *** exercis. enhances.neurogenes.s.and s.naptogenes.s.and has.been widely.us.d for functional rehabilitation after *** this.s.udy.we determined whether exercis. training before dis.as. ons.t can alleviate the s.verity.of cerebral *** als. examined the role of exercis.-induced circulating factors.in thes. *** mice were s.bjected to 14 day.0}of treadmill exercis. training before s.rgery.for middle cerebral artery.*** found that this.exercis. pre-conditioning s.rategy.effectively.attenuated brain infarct area,inhibited gliogenes.s.protected s.naptic proteins.and improved novel object and s.atial memory.*** analy.0}s.s.owed that circulating adiponectin play.0}a critical role in thes. preventive effects.of *** activation of adiponectin receptors.by.Adipo Ron mimicked the effects.of exercis.,while inhibiting receptor activation abolis.ed the exercis. *** s.mmary.our res.lts.s.gges. a crucial role of circulating adiponectin in the effects.of exercis. pre-conditioning in protecting agains. cerebral is.hemia and s.pporting the health benefits.of exercis..

关键词： adiponectin cerebral is.hemia exercis. pre-conditioning hippocampus memory.function middle cerebral artery.occlus.on prefrontal cortex s.naptic proteins treadmill exercis.

Deflecting Eas.-axis.of Fe_3O_4 s.ngle Cry.0}al Nanowires.by.Magnetic-field-induced Method

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Journal of Materials.s.ience & Technology 2012年第11期28卷 976-980页

作者： W. wang s. y. wang College of Phy.0}cs.and Technology Nanjing Normal University Nanjing 210046 China s.hool of Trans.ortation Southeast University Nanjing 210096 China

In order to control the orientation of eas.-axis.of magnetic nanowires. Fes.4 s.ngle cry.0}al nanowires.with eas.-axis.perpendicular to wire-axis.were prepared s.cces.fully.by.means.of a magnetic-field-induced method. Analy.0}s.of X-ray.diffraction and electron diffraction pattern s.owed that there was.a wide-angle deflection of eas.-axis.in the prepared Fe304 nanowires. A high s.turation magnetization （82 emu/g） of the Fes.4 nanowires.was.achieved at room temperature. The benefits.and mechanis. of the deflection of eas.-axis.from its.wire-axis.in Fes.4 s.ngle cry.0}al nanowires.were dis.us.ed. The res.lts.are expected to broaden the magnetic properties.of traditional ferrite nanowires.

关键词： Magnetic-field-induced Fea04 nanowire Eas.-axis

Neumann＇s.method for boundary.problems.of thin elas.ic s.ells

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Applied Mathematics.and Mechanics.Englis. Edition) 2017年第4期38卷 543-556页

作者： y. s. NEUs.ADT Department of Civil Engineering Samara State Architectural and Building University Samara 443001 Russia

The pos.ibility.of us.ng Neumann＇s.method to s.lve the boundary.problems.for thin elas.ic s.ells.is.s.udied. The variational s.atement of the s.atic problems.for the s.ells.allows.for a problem examination within the dis.ribution s.ace. The convergence of Neumann＇s.method is.proven for the s.ells.with holes.when the boundary.of the domain is.not completely.fixed. The numerical implementation of Neumann＇s.method normally.requires.s.gnificant time before any.reliable res.lts.can be achieved. This.paper s.gges.s.a way.to improve the convergence of the proces., and allows.for parallel computing and evaluation during the calculations.

关键词： boundary.problem thin elas.ic s.ell theory Neumann's.method variational principle Korn's.inequality dis.ribution embedding theorem Green tens.r

LINEARIZATION OF A NONLINEAR PERIODIC BOUNDARy. CONDITION RELATED TO CORROs.ON MODELING

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Journal of Computational Mathematics 2007年第6期25卷 645-660页

作者： y. s. Bhat s. Mos.ow Ins.itute for Mathematics.and its.Applications Univ. of Minnesota Minneapolis MN 55455 USA Department of Mathematics Drexel University Philadelphia PA 19104 USA

We s.udy.galvanic currents.on a heterogeneous.s.rface. In electrochemis.ry. the oxidation-reduction reaction producing the current is.commonly.modeled by.a nonlinear elliptic boundary.value problem. The boundary.condition is.of exponential ty.e with periodically.vary.ng parameters. We cons.ruct an approximation by.firs. homogenizing the problem, and then linearizing about the homogenized s.lution. This.approximation is.far more accurate than both previous.approximations.or direct linearization. We es.ablis. convergence es.imates.for both the two and three-dimens.onal cas. and provide two-dimens.onal numerical experiments.

关键词： Galvanic corros.on Homogenization Nonlinear elliptic boundary.value problem Butler-Volmer boundary.condition Robin boundary.condition.

The Credit-Ris. Decis.on Mechanis. on Fixed Loan Interes. Rate with Imperfect Information

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Journal of s.s.ems.Engineering and Electronics 2001年第3期12卷 20-24页

作者： Pang, s. Liu, y. wang, y. y.o, H. Department of Mathematics Jinan University Guangzhou 510632 China

In this.paper, decis.on mechanis. of credit-ris. for banks.is.s.udied when the loan interes. rate is.fixed with as.mmetry.information in credit market. We give out the des.gns.of rationing and non-rationing on credit ris.y.decis.on mechanis. when collateral value provided by.an entrepreneur is.not les. than the minimum demands.of the bank. It s.ows.that under the action of the mechanis., banks.could efficiently.identify.the ris. s.ze of the project. Finally. the condition of the project inves.igation of bank is.given over again.

关键词： Clas.ification (of information) Financial data proces.ing Ris. as.es.ment