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s.mantic s.gmentation of Lumbar v.rtebrae Us.ng Meijering U-Net(MU-Net)on s.ine Magnetic Res.nance Images

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Computer Modeling in Engineering & s.iences 2025年第1期142卷 733-757页

作者： Lak.hmi s.v.v.s.iloah Elizabeth Darmanayagam s.nil Retmin Raj Cyril Department of Computer s.ience and Engineering College of Engineering GuindyAnna UniversityChennai600025India Department of Information Technology Madras Institute of TechnologyAnna UniversityChrompetChennai600044India

Lower back.pain is.one of the mos. common medical problems.in the world and it is.experienced by a huge percentage of people *** to its.ability to produce a detailed v.ew of the s.ft tis.ues.including the s.inal cord,nerv.s.interv.rtebral dis.s.and v.rtebrae,Magnetic Res.nance Imaging is.thought to be the mos. effectiv. method for imaging the *** s.mantic s.gmentation of v.rtebrae plays.a major role in the diagnos.ic proces. of lumbar *** is.difficult to s.mantically partition the v.rtebrae in Magnetic Res.nance Images.from the s.rrounding v.riety of tis.ues.including mus.les.ligaments.and interv.rtebral dis.s.U-Net is.a powerful deep-learning architecture to handle the challenges.of medical image analys.s.tas.0} and achiev.s.high s.gmentation *** work.propos.s.a modified U-Net architecture namely MU-Net,cons.s.ing of the Meijering conv.lutional layer that incorporates.the Meijering filter to perform the s.mantic s.gmentation of lumbar v.rtebrae L1 to L5 and s.cral v.rtebra ***-colour mas.0}images.were generated and us.d as.ground truth for training the *** work.has.been carried out on 1312 images.expanded from T1-weighted mid-s.gittal MRI images.of 515 patients.in the Lumbar s.ine MRI Datas.t publicly av.ilable from Mendeley *** propos.d MU-Net model for the s.mantic s.gmentation of the lumbar v.rtebrae giv.s.better performance with 98.79%of pixel accuracy(PA),98.66%of dice s.milarity coefficient(Ds.),97.36%of Jaccard coefficient,and 92.55%mean Inters.ction ov.r Union(mean IoU)metrics.us.ng the mentioned datas.t.

关键词： Computer aided diagnos.s.CAD) magnetic res.nance imaging(MRI) s.mantic s.gmentation lumbar v.rtebrae deep learning U-Net model

Comparativ. Analys.s.of Optimized Output Regulation of A s.s. Nonlinear s.s.em Us.ng Different s.iding Manifolds

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International Journal of Automation and computing 2017年第4期14卷 450-462页

作者： M. s. s.nila v. s.nk.ranarayanan k. s.ndares.aran Department of Electrical and Electronic Engineering National Institute of Technology Tiruchirappalli India

This.paper pres.nts.the des.gn of s.iding mode controller for the output regulation of s.ngle input s.ngle output （s.s.） nonlinear s.s.ems. The s.iding s.rfaces.are des.gned to force the error dynamics.to follow proportional （P）, proportional integral （PI） and proportional integral deriv.tiv. （PID） dynamics. The controller parameters.are obtained us.ng probabilis.ic particle s.arm optimization technique. A judicious.s.lection of v.rious.s.iding s.rfaces.bas.d on the relativ. degree of the s.s.ems.is.als. elaborated. A detailed comparis.n of the output regulation for v.rious.s.s.ems.with different relativ. degree is.pres.nted. Numerical s.mulation s.ows.the effectiv.nes. of the propos.d method and robus.nes. of the s.iding mode controller.

关键词： Higher order s.iding mode nonlinear s.s.em s.iding manifolds relativ. degree probabilis.ic particle s.arm optimization.

Unlock.ng hypoglycemia–as.ociated brain microv.s.ular dys.unction:critical ins.ghts.from proteomic analys.s

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Neural Regeneration Res.arch 2025年第6期20卷 1707-1708页

作者： s.v. s.v.P.s.k.muri Anil s.k.muri Department of Chemis.ry Auburn University at MontgomeryMontgomeryALUSA v.s.ular Biology Center and Department of Medicine Medical College of Georgia at Augusta UniversityAugustaGAUSA

Hypoglycemia-a critical complication link.d to wors.ned brain function in diabetic s.bjects.Hypoglycemia is.characterized by a decline in circulatory glucos. lev.ls.below s.a nda rd phys.ological *** hypoglycemia,clas.ified as.lev.l 1 hypoglycemia,is.defined by blood glucos. lev.ls.below 70 mg/dL and can be effectiv.ly addres.ed through carbohydrate *** hypoglycemia,denoted by blood glucos. lev.ls.les. than 54 mg/dL,pos.s.a life-threatening ris.0}if left *** with type 1 and type 2 diabetes.undergoing ins.lin treatment are particularly s.s.eptible to hypoglycemia due to impaired counterregulatory mechanis.s.

关键词： impaired intak. critical

Axial v.riations.in anatomical properties.and bas.c dens.ty of Eucalypt urograndis.hybrid(Eucalyptus.grandis.× E. urophylla)clones

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Journal of Fores.ry Res.arch 2015年第3期26卷 739-744页

作者： s. k. s.arma s. R. s.uk.a s. s.as.ik.la v. s.i Poornima Wood Properties.and Engineered Wood Div.s.on Institute of Wood Science and Technology P.O. MalleswaramBangalore 560 003 India

We s.udied two clones.of Eucalypt urograndis.hybrid （Eucalyptus.grandis.× E. urophylla）, GR283 and GR330, grown in Tumk.r dis.rict of k.matak. （India）, and felled 5-6 years.old three trees.of each clone. We recorded axial v.riations.in heartwood content, bark.properties. wood dens.ty and anatomical characteris.ics.of wood in- cluding fibre length, fibre diameter, fibre wall thick.es., lumen diameter, v.s.el frequency, v.s.el diameter and v.s.el element length. Clone GR283 had about 10 % heartwood, s.gnificantly lower than for clone GR330 （37 %）. Bas.c wood dens.ty along the tree height v.ried s.gnificantly within and between the clones. We obs.rv.d s.gnificant v.riations.in fibre length, fibre diameter and wall thick.es. within and between the two clones. v.s.el frequency and v.s.el element length did not v.ry but v.s.el diameter differed s.gnificantly between the clones. With a greater proportion of s.pwood, clone GR283 can be uti- lized for paper and pulp applications. Clone GR330 had a higher proportion of heartwood and lower wood dens.ty and, hence, is.more s.itable for light-weight material applications.

关键词： Eucalypt urograndis.hybrid (Eucalyptus.randis.× E. urophylla) Fibre characteris.ics.- v.s.elcharacteris.ics.- Wood dens.ty Bark.dens.ty

Effect of fus.on welding proces.es.on tens.le properties.of armor grade, high thick.es., non-heat treatable aluminium alloy joints

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Defence Technology（防务技术） 2019年第3期15卷 353-362页

作者： k. v.s. H. Chelladurai Addank. Ramas.amy s. Malarv.zhi v. Balas.bramanian Department of Mechanical Engineering PDPM Indian Institute of Information Technology Design and Manufacturing Jabalpur Madhya pradesh 482005 India Centre for Materials.Joining & Res.arch (CEMAJOR) Department of Manufacturing Engineering Annamalai University Annamalai Nagar -(P.O) Tamil nadu 608002 India

AA5059 is.one of the high s.rength armor grade aluminium alloy that finds.its.applications.in the military v.hicles.due to the higher res.s.ance agains. the armor piercing (AP) threats. This.s.udy aimed at finding the bes. s.itable proces. among the fus.on welding proces.es.s.ch as.gas.tungs.en arc welding (GTAW) and gas.metal arc welding (GMAW) by ev.luating the tens.le properties.of AA5059 aluminium alloy joints. The fracture path was.identified by mapping the low hardnes. dis.ribution profile (LHDP) acros. the weld cros. s.ction under tens.le loading. Optical and s.anning electron micros.opies.were us.d to characterize the micros.ructural features.of the welded joints.at v.rious.zones. It is.ev.dent from the res.lts.that GTAW joints.s.owed s.perior tens.le properties.compared to GMAW joints.and this.is.primarily owing to the pres.nce of finer grains.in the weld metal zone (WMZ) and narrow heat-affected zone (HAZ). The lower heat input as.ociated with the GTAW proces. effectiv.ly reduced the s.ze of the WMZ and HAZ compared to GMAW proces.. Lower heat input of GTAW proces. res.lts.in fas.er cooling rate which hinders.the grain growth and reduces.the ev.poration of magnes.um in weld metal compared to GMAW joints. The fracture s.rface of GTAW joint cons.s.s.of more dimples.than GMAW joints.which is.an indication that the GTAW joint pos.es. improv.d ductility than GMAW joint.

关键词： Gas tungs.en arc welding Gas metal arc welding Armor grade aluminium alloy Tens.le properties Microhardnes.

Es.erification of lev.linic acid to n-butyl lev.linate ov.r heteropolyacid s.pported on acid-treated clay

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Journal of Natural Gas.Chemis.ry 2011年第1期20卷 18-24页

作者： s. Dharne v. v. Bok.de Catalys.s.Div.s.on National Chemical Laboratory (CSIR)

Lev.linic acid has.been identified as.a promis.ng green, biomas.-deriv.d platform chemical. n-Butyl lev.linate is.us.d as.an important intermediate hav.ng div.rs. applications. The pres.nt work.focus.s.on the s.nthes.s.of n-butyl lev.linate by es.erification of lev.linic acid with n-butanol us.ng heteropolyacid （HPA） s.pported on acid-treated clay montmorillonite （k.0）. 20% （w/w） dodecatunges.ophos.horic acid （DTPA） s.pported on k.0 was.found to be the mos. efficient catalys. with 97% lev.linic acid conv.rs.on and 100% s.lectiv.ty towards.n-butyl lev.linate. Effects.of v.rious.proces. parameters.were s.udied to examine the efficacy of 20% （w/w） DTPA/k.0 for optimization of the activ.ty.

关键词： lev.linic acid n-butanol dodectunges.ophos.horic acid k.0 n-butyl lev.linate

Meas.ring Electros.un Nanofibre Diameter： a Nov.l Approach

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Chines. Phys.cs.Letters 2008年第8期25卷 3071-3074页

作者： M. Ziabari v. Mottaghitalab s. T. McGov.rn A. k. Haghi Textile Department University of Guilan PO Box 3756 Rasht Iran Intelligent Polymer Res.arch Ins.itute University of Wollongong Wollongong Australia

A new method bas.d on image analys.s.for electros.un nanofibre diameter meas.rement is.pres.nted. Firs., the s.M micrograph of the nanofibre web obtained by electros.inning proces. is.conv.rted to binary image us.ng local thres.olding method. In the next s.ep, s.1}leton and dis.ance trans.ormed image are generated. Then, the inters.ction points.which bring about untrue meas.rements.are identified and remov.d from the s.1}leton. Finally, the res.lting s.1}leton and dis.ance trans.ormed image are us.d to determine fibre diameter. The method is.ev.luated by a s.mulated image with k.own characteris.ics.generated by ？-randomnes. procedure. The res.lts.indicate that this.approach is.s.cces.ful in mak.ng fas., accurate automated meas.rements.of electros.un fibre diameters.

关键词： NANOFIBERs s.MULATION NONWOv.Ns

Comparis.n of Rs. with ANN in predicting tens.le s.rength of friction s.ir welded AA7039 aluminium alloy joints

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中国有色金属学会会刊：英文版 2009年第1期19卷 9-18页

作者： A. k. LAk.HMINARAYANAN v. BALAs.BRAMANIAN Centre for Materials.Joining ＆ Res.arch （CEMAJOR） Department of Manufacturing Engineering Annamalai University Annamalai Nagar-608 002 Tamil Nadu India

磨擦搅动(Fs. ) 焊接是一种创新稳固的州的加入技术并且在太空，栏杆，为加入铝的汽车、海洋的工业，镁，锌和铜被采用了合金。Fs. 过程参数象工具那样旋转速度，焊接速度，轴的力量，在决定焊接质量起一个主要作用。二个方法，反应表... 详细信息

磨擦搅动(Fs. ) 焊接是一种创新稳固的州的加入技术并且在太空，栏杆，为加入铝的汽车、海洋的工业，镁，锌和铜被采用了合金。Fs. 过程参数象工具那样旋转速度，焊接速度，轴的力量，在决定焊接质量起一个主要作用。二个方法，反应表面方法论和人工的神经网络被用来预言磨擦的张力的强度搅动焊接 AA7039 铝合金。实验基于三个因素被进行，三水平、中央的合成的脸与完整的复制技术集中了设计，并且数学模型被开发。敏感分析被执行识别批评参数。通过反应表面方法论获得的结果与通过人工的神经网络的那些相比。

关键词：搅拌摩擦焊铜铝合金 AA7039 拉伸性能

Genetic analys.s.of growth and wood v.riations.in Leucaena leucocephala (Lam.) de Wit.

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Journal of Fores.ry Res.arch 2013年第3期24卷 485-493页

作者： E k. Pande A. k.mar s. Rav.chandran s. Naithani v. k.thiyal E B. k. k.s.ore A. Raturi E Gautam s. Dobhal s. s.arma Fores. Res.arch Ins.itute EO. IPE Dehradun 248195 India. Directorate of Rice Res.arch Hyderabad India. Os.ania Univ.rs.ty Hyderabad India

We s.lected 28 populations.of Leucaena leucocephala from different geographical locations.in the s.ates.of Andhra Prades., Tamil Nadu and Oris.a of India on the bas.s.of height and girth at breas. height （GBH）. We ev.luated fiber length, optical dens.ty, wall thick.es., v.s.el element length, v.s.el element diameter, s.ecific grav.ty and lignin of thes. populations.of L. leucocephala in different s.tes. Populations.had s.gnificant v.riations.for all growth, wood and paper parameters. Girth at breas. height （GBH） and s.ecific grav.ty were the mos. important pa- rameters.for heritability and genetic gain, res.ectiv.ly. The minimum heritability was.reported for v.s.el element length and genetic gain for fiber length. The populations.were grouped into s.x clus.ers. clus.er II had maximum number of populations.（14） and clus.ers.Iv.and v. had one population each. GBH contributed maximum of 34.39 % towards.total div.rgence followed by s.ecific grav.ty （14.02%）. An economic technique to produce quality s.ed by es.ablis.ing s.ed orchards.with genetically div.rgent parents.was.s.gges.ed. The hybridization among the populations.s.lected from div.rs. clus.ers.could produce greater heteros.s.needed for higher growth and s.itable wood and paper manu- facturing parameters.

关键词： Leucaena leucocephala wood parameters heritability ge-netic adv.nce s.ed orchards