检索结果-南通市图书馆

Neur.l r.gener.tion r.sear.h 2025年第9期20卷 2591-2593页

作者： Alena Salasova Ander. Nykjær Danish r.sear.h Institute of Tr.nslational Neur.science DANDr.TE-Nor.ic EMBL Par.ner.hip for.Molecular.Medicine and Centre of Excellence PROMEMODepartment of BiomedicineAarhus UniversityAarhusDenmark

The for.ation of the mammalian ner.ous system and its matur.tion into sensor.,motor.cognitive,and behavior.l cir.uits is a complex pr.cess that begins dur.ng ear.y embr.ogenesis and lasts until young *** neur.developm... 详细信息

关键词： pr.gr jointly CS2

Cr.ation of Multiple Subwavelength Focal Spot Segments Using Phase Modulated r.dially Polar.zed Multi Gaussian Beam

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letter. 2016年第9期33卷 48-51页

作者： K.Pr.bakar.n K.B.r.jesh S.Sumathir. M.D.Bhar.thi r.hemamalini A.M.Musthafa V.Ar.ulmoji Depar.ment of Physics Mahendra Arts and Science College(Autonomous) Depar.ment of Physics Chikkanna Government Arts College Depar.ment of Physics Sri Sarada College for Women(Autonomous) Depar.ment of Gener.l Studies(Physics Gr.up) Jubail University College(Male Branch) Royal Commission of Jubail Center.for.r.sear.h and Development Mahendra Educational Institutions

Based on the vector.diffr.ction theor., the effect of complex phase filter. on intensity distr.bution of a r.dially polar.zed multi Gaussian beam in the focal r.gion of high NA lens is theor.tically investigated. It is obser.ed that a pr.per.y designed multi belt complex phase filter.can gener.te subwavelength novel focal patter.s including splitting of focal spots and gener.tion of multiple focal spot segments such as eight, six and four.focal spots along the optical axis ar. obtained. We expect that such an investigation is useful for.optical manipulation and mater.al pr.cessing, multiple high r.fr.ctive index par.icle tr.pping technologies.

关键词： of for Cr.ation of Multiple Subwavelength Focal Spot Segments Using Phase Modulated r.dially Polar.zed Multi Gaussian Beam on is in

Antisense oligonucleotides pr.vide optimism to the ther.peutic landscape for.tauopathies

在线全文

学校读者我要写书评

暂无评论

Neur.l r.gener.tion r.sear.h 2025年第3期20卷 803-804页

作者： Glenn A.Har.is Laur.n r.Hir.chfeld r.inwater.Char.table Foundation Fort WorthTXUSA

Tauopathies ar. a gr.up of neur.degener.tive diseases char.cter.zed by abnor.al metabolism of the misfolded tau pr.tein. Tau is encoded by the micr.tubule-associated pr.tein tau gene(MAPT) and can be classified as either.3-r.peat(3r. or.4-r.peat(4r. based on the number.of r.peat domains fr.m alter.ative splicing of exon 10 of the MAPT gene.

关键词： tau metabolism diseases

STUDY OF THr.E-DIMENSIONAL SEPAr.TION OF BOUNDAr. LAYEr.OVEr.BLUNT BODIES

在线全文

学校读者我要写书评

暂无评论

Jour.al of Hydr.dynamics 2009年第1期21卷 100-107页

作者： ATMANI r. Br.MA A. ASKOVIC r. Labor.toir. de mécanique des fluides Université de ValenciennesAulnoy lez Valenciennes 59326 France Dépar.ement de Mécanique Université de BiskraBiskra 07000 Algérie

In the case of thr.e-dimensional flows, the separ.tion can be defined in mor. than one way. Discussions about thr.e-dimensional boundar. layer.separ.tion in the liter.tur. have found a r.tional extension of the zer. skin fr.ction. Attempts have been made to establish the identity of “separ.tion lines”. Among definitions, these may be found：（1） envelopes of limiting str.amlines, （2） lines dividing flow which has come fr.m differ.nt r.gions, （3） lines of singular.ties （pr.blems of topology）, （4） lines on which some component of the skin fr.ction vanishes. Each of these is valid under.cer.ain conditions, but none is univer.ally valid. In the pr.sent wor., we use the definition （4）, i.e. at low incidence of a blunt body the separ.tion line is identified as the zer. of the mer.dian skin fr.ction component （Wang 1975）. So the separ.tion line on a flattened spher.id （6：3：1） at 6° of incidence is calculated, as well as exper.mentally deter.ined by using the electr.chemical method, which allows to follow the evolution of the par.etal velocity gr.dient.

关键词： thr.e-dimensional flows separ.tion boundar. layer. blunt bodies

Activator.assisted electr.less deposition of copper.nanostr.ctur.d films

在线全文

学校读者我要写书评

暂无评论

Inter.ational Jour.al of Miner.ls,Metallur.y and Mater.als 2014年第2期21卷 196-203页

作者： Var.ha r. Mehto r. K. Pandey Depar.ment of Physics Barkatullah University NIIT Univer.ity

This paper.showed simple and effective synthesis of copper.nanopar.icles within contr.lled diameter.using dir.ct electr.less deposition on glass substr.tes, following the sensitization and activation steps. Electr.less-deposited metals, such as Cu, Co, Ni, and Ag, and their.alloys had many advantages in micr.- and nanotechnologies. The str.ctur.l, mor.hological, and optical pr.per.ies of copper.deposits wer. char.cter.zed using X-r.y diffr.ction （Xr.）, atomic for.e micr.scopy （AFM）, and UV-Vis spectr.scopy. The str.ctur.l data was fur.her.analyzed using the r.etveld r.finement pr.gr.m. Str.ctur.l studies r.veal that the deposited copper.pr.fer. a （111） or.entation. AFM studies suggest the deposited mater.als for. compact, unifor., and nanocr.stalline phases with a high tendency to self-or.anize. The data show that the par.icle size can be contr.lled by contr.lling the activator.concentr.tion. The absor.tion spectr. of the as-deposited copper.nanopar.icles r.veal that the plasmonic peak br.adens and exhibits a blue shift with decr.asing par.icle size.

关键词： nanostr.ctur.d mater.als thin films copper electr.less plating deposition

Seismic behavior.of var.able fr.quency pendulum isolator

在线全文

学校读者我要写书评

暂无评论

Ear.hquake Engineer.ng and Engineer.ng Vibr.tion 2008年第2期7卷 193-205页

作者： V. r. Panchal r. S. Jangid Depar.ment of Civil Engineer.ng Indian Institute of TechnologyBombayPowaiMumbai 400076India

Ear.hquake per.or.ance of a flexible one-stor. building isolated with a var.able fr.quency pendulum isolator.（VFPI） under.near.fault and far.field gr.und motions is investigated. The fr.ctional for.es mobilized at the inter.ace of the VFPI ar. assumed to be velocity dependent. The inter.ction between fr.ctional for.es of the VFPI in two hor.zontal dir.ctions is duly consider.d and coupled differ.ntial equations of motion of the isolated system in the incr.mental for. ar. solved iter.tively. The r.sponse of the system with bi-dir.ctional inter.ction is compar.d with those without inter.ction. In addition, the effects of velocity dependence on the r.sponse of the isolated system ar. also investigated. Mor.over. a par.metr.c study is car.ied out to cr.tically examine the influence of impor.ant par.meter. on bi-dir.ctional inter.ction effects of the fr.ctional for.es of the VFPI. These par.meter. ar.： the super.tr.ctur. time per.od, fr.quency var.ation factor.（FVF） and fr.ction coefficient of the VFPI. Fr.m the above investigations, it is obser.ed that the dependence of the fr.ction coefficient on r.lative velocity of the system does not have a noticeable effect on the peak r.sponse of the system isolated with VFPI, and that the bi-dir.ctional inter.ction of fr.ctional for.es of the VFPI is impor.ant and if neglected, isolator.displacements will be under.stimated and the super.tr.ctur. acceler.tion and base shear.will be over.stimated.

关键词： base isolation bi-dir.ctional inter.ction super.tr.ctur. flexibility near.fault gr.und motion fr.ction coefficient far.field gr.und motion VFPI

Human-Like r.bot Sensing Mediated by Body Heat

在线全文

学校读者我要写书评

暂无评论

Jour.al of Bionic Engineer.ng 2014年第1期11卷 82-89页

作者： r. Andr.w r.ssell Depar.ment of Electr.cal and Computer.Systems Engineer.ng Monash University Clayton VIC 3800 Australia

This paper.pr.sents a novel r.botic sensor.system that can monitor.volatile chemicals and air.low. The system is modelled on char.cter.stics of the human body that ar. thought to have a significant influence on the human odour.and air.low senses. In par.icular. the effect of buoyant air.low due to body heat acts to gather.volatile chemicals over.lar.e ar.as of the human body and car.y them to the nose. It is postulated that this effect incr.ases the r.ceptive ar.a for.human olfaction. In addition, the inter.ction between r.sing air.heated by the body and exter.al air.low pr.duces a temper.tur. distr.bution about head height that can be used to infer.air.low dir.ction and magnitude. A heated sensor.system was constr.cted to investigate these effects and the r.sulting sensor.was mounted on a mobile r.bot. The design of the sensor.system is descr.bed. r.sults ar. pr.sented which demonstr.te its ability to measur. air.low dir.ction and detect chemical signals over.a wider.r.ceptive field compar.d with an unheated sensor.

关键词： sensing volatile chemicals sensing air.low human body heat biomimetic r.bots

Ser.iceability analysis of deep under.r.und openings dr.ven in jointed-r.ck

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Inter.ational Jour.al of Mining Science and Technology 2017年第6期27卷 1019-1024页

作者： Abdellah Wael r. Mining and Metallur.ical Engineer.ng Depar.ment Faculty of Engineering University of Assiut Assiut 71515 Egypt

The per.or.ance of under.r.und excavations is inevitably influenced by r.ck mass char.cter.stics, pr.sence of joints and their.geometr.cal pr.per.ies, depth below sur.ace and state of in-situ str.ss field. The objective of this paper.is to investigate the behaviour.of deep under.r.und tunnel opening existed between two bedding planes, Such planes weaken the str.ngth of r.ck mass and may cause r.ck slippage/r.tation along them. Ther.for., the state of str.ss-displacement, after.tunnel opening has been intr.duced, is examined using two-dimensional elasto-plastic finite-elements code, r.^(2D). The r.sults indicate that, ther. is significant dr.p in the nor.al str.ss along joints over.tunnel opening; slip occur. due to r.ver.al in the dir.ction of shear.str.ss(e.g., inwar. shear.displacement is pr.duced) and ther. is discontinuity in the str.ngth contour. of r.ck sur.ounding tunnel after.they have been inter.ected by bedding planes.

关键词： State of str.ss-displacement Bedding planes Tunnel per.or.ance Depth of failur. zones Stability analysis

Novel acid initiator. for.the r.pid cationic polymer.zation of styr.ne in r.om temper.tur. ionic liquids

在线全文

学校读者我要写书评

暂无评论

Science China Chemistr. 2012年第8期55卷 1671-1676页

作者： VIJAYAr.GHAVAN r. MACFAr.ANE D. r. Depar.ment of Chemistr. Monash University Clayton Campus Victoria 3800 Australia

Cationic polymer.zation of styr.ne has been achieved using sever.l novel acidic initiator. in r.om temper.tur. ionic liquids (ILs) under.mild r.action conditions to obtain polymer. of low molecular.weight with nar.ow polydisper.ity. Both str.ng pr.tic acids such as bis(tr.fluor.methanesulfonyl) amide acid (HTFSA) and a moder.tely weak acid such as bisoxalato phosphor.us acid (HBOP) have been studied as initiator.. It has been obser.ed that HTFSA initiates the polymer.zation r.pidly even at r.om temper.tur. and below, as compar.d to HBOP which pr.duces a slower.polymer.zation r.quir.ng elevated temper.tur.s to complete. The r.lative differ.nce in r.activity of the initiator. as compar.d to the pr.viously descr.bed HBOB initiator.is discussed in ter.s of the differ.nce in their.pr.ton acidity and the consequential basicity of the anions. The efficiency of differ.nt ILs as the r.action solvent is also pr.sented.

关键词： cationic polymer.zation HTFSA HBOP ILs polydisper.ity