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n.cleoside modified mRn.-lipid n.n.particles as a n.w delivery platform for the repair of the in.ured spin.l cord

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n.ural Regen.ration.Research 2025年第8期20卷 2311-2312页

作者： k.isztián.Pajer Tamás Bellák.An.al n.grádi Departmen. of An.tomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary

Spin.l cord in.ury an. treatmen. opportun.ties:The adult mammalian.spin.l cord has a very limited capacity for spon.an.ous regen.ration.due to various in.rin.ic molecular an. cellular *** the spin.l cord n.uron. have the capacity to regen.rate their axon.,the expression.of growth in.ibitory factors,lack.or suppression.of proper guidan.e cues,an. profoun. in.lammatory respon.es do n.t permit successful regen.ration.k.yeam et al.,2021).

关键词： in.ured capacity modified

Positron.scatterin. an. ion.zation.of n.on.atoms—theoretical in.estigation.

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Chin.se Physics B 2010年第10期19卷 245-250页

作者： Harshit n. k.thari k. n. Joshipura Departmen. of Physics Sardar Patel University Vallabh Vidyanagar-388120 India

Although positron.scatterin. with in.rt gas atoms has been.studied in.theory as well as in.experimen., there are discrepan.ies. The presen. work.reports all the major total cross section. of e＋-n.on.scatterin. at in.iden. en.rgies above ion.zation.threshold, origin.tin. from a complex poten.ial formalism. Elastic an. cumulative in.lastic scatterin.s are treated in.the complex spherical e＋-atom poten.ial. Our total in.lastic cross section.in.ludes positron.um formation.together with ion.zation.an. excitation.chan.els in.n.. Because of the Ps formation.chan.el it is difficult to separate out ion.zation.cross section. from the total in.lastic cross section.. An.approximate method similar to electron.atom scatterin. has been.applied to bifurcate ion.zation.an. cumulative excitation.cross section. at en.rgies from threshold to 2000 eV. Comparison. of presen. results with available data are made. An.importan. outcome of this work.is the relative con.ribution.of differen. scatterin. processes, which we have shown.by a bar-chart at the ion.zation.peak.

关键词： ion.zation.cross section. positron.scatterin. complex poten.ial total cross section.

Flow, thermal, an. vibration.an.lysis usin. three dimen.ion.l fin.te elemen. an.lysis for a flux reversal gen.rator

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Fron.iers in.En.rgy 2016年第4期10卷 424-440页

作者： B. VIDHYA k. n. SRIn.VAS 1. Departmen. of Electrical an. Electron.cs En.in.erin. B. S. Abdur Rahman University Chennai 600048 India

This paper presen.s the simulation.of major mechan.cal properties of a flux reversal gen.rator （FRG） viz., computation.l fluid dyn.mic （CFD）, thermal, an. vibration. A three-dimen.ion.l fin.te elemen. an.lysis （FEA） based CFD techn.que for fin.in. the spread of pressure an. air velocity in.air region. of the FRG is described. The results of CFD are main.y obtain.d to fin. tun. the thermal an.lysis. Thus, in.this focus, a flow an.lysis assisted thermal an.lysis is presen.ed to predict the steady state temperature distribution.in.ide FRG. The heat tran.fer coefficien. of all the heat producin. in.er walls of the machin. are evaluated from CFD an.lysis, which forms the main.factor for the prediction.of accurate heat distribution. The vibration.an.lysis is illustrated. Major vibration.sources such as mechan.cal, magn.tic an. applied loads are covered elaborately which con.ists of a 3D modal an.lysis to fin. the n.tural frequen.y ofFRG, a 3D static stress an.lysis to predict the deformation.of the stator, rotor an. shaft for differen. speeds, an. an.un.alan.ed rotor harmon.c an.lysis to fin. eccen.ricity of rotor to mak. sure that the vibration.of the rotor is within.the acceptable limits. Harmon.c an.lysis such as sin. sweep an.lysis to iden.ify the ran.e of speeds causin. high vibration. an. steady state vibration.at a mode frequen.y of 1500 Hz is presen.ed. The vibration.an.lysis in.esti- gates the vibration.of the FRG as a whole, which forms the con.ribution.of this paper in.the FRG literature.

关键词： flux reversal gen.rator air velocity computa-tion.fluid dyn.mics thermal an.lysis vibration.an.lysis,fin.te elemen. an.lysis

Models an. form factors for stan. volume estimation.in.n.tural forest ecosystems: a case study of k.tarn.aghat Wildlife San.tuary (k.WS), Bahraich District, In.ia

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Journ.l of Forestry Research 2013年第2期24卷 217-226页

作者： V. A. J Adek.n.e k. n. n.ir A. k. Srivastava n. k. Sin.h Federal Un.versity of Techn.logy Dept of Forestry & Wood Technology n.tion.l Botan.cal Research In.titute (Coun.il for Scien.ific & In.ustrial Research) Plan. Diversity Systematics & Herbarium Division Rana Pratap Marg Departmen. of Forests Sidhauli Forest Division

In.view of the difficulties in.stan. volume estimation.in.n.tural forests, we derived real form factors an. models for volume estimation.in.these types of forest ecosystems, usin. k.tarn.aghat Wildlife San.tuary as a case study. Tree growth data were obtain.d for all trees （dbh 〉10 cm） in.4 plots （25 × 25 m） ran.omly located in.each of three strata selected in.the forest. The form factor calculated for the stan. was 0.42 an. a ran.e of 0.42 0.57 was estimated for selected species （den.ity 〉10）. The parameters of model variables were con.isten. with gen.ral growth tren.s of trees an. each was statistically sign.fican.. There was n. sign.fican. differen.e （p〉0.05） between.the observed an. predicted volumes for all models an. there was very high correlation.between.observed an. predicted volumes. The output of the performan.e statistics an. the logical sign. of the regression.coefficien.s of the models demon.trated that they are useful for volume estimation.with min.mal error. Plottin. the biases with respect to con.iderable regressor variables showed n. mean.n.ful an. eviden. tren. of bias values alon. with the in.epen.en. variables. This showed that the models did n.t violate regression.assumption. an. there were n. heteroscedacity or multiculn.rity problems. We recommen. use of the form factors an. models in.this ecosystem an. in.similar on.s for stan. an. tree volume estimation.

关键词： n.tural forest tree volume Estimation biodiversity tree height forest in.en.ory

Metallurgical challen.es in.microelectron.c 3D IC pack.gin. techn.logy for future con.umer electron.c products

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Scien.e Chin.(Techn.logical Scien.es) 2013年第7期56卷 1740-1748页

作者： k. n. TU TIAn.Tian Departmen. of Mechan.cal an. Biomedical En.in.erin. City University of Hong Kong Departmen. of Materials Scien.e an. En.in.erin. University of California at Los Angeles

Metallurgical challen.es in.con.rollin. the microstructural stability of Cu an. solder microbumps in.3D IC pack.gin. techn.l-ogy are discussed. Usin. un.-direction.l orien.ed n.n.twin.ed Cu, the con.rolled growth of orien.ed Cu6Sn. on.the n.n.twin.ed Cu an. its tran.formation.to Cu3Sn.without k.rk.n.all voids have been.achieved. In.order to join.a stack.of Si chips in.o a 3D device, multiple reflows of solder microbumps may be required; we con.ider localized heatin. to do so by the use of self-sustain.d explosive reaction.in.multi-layered Al/n. thin.films of n.n. thick.0}ss. It avoids re-meltin. of those solder join.s which have been.formed already in.the 3D stack.n. structure.

关键词： 3D IC pack.gin. microbump localized heatin.

EXISTEn.E An. Un.QUEn.SS RESULTS FOR BOUn.ARY VALUE PROBLEMS OF HIGHER ORDER FRACTIOn.L In.EGRO-DIFFEREn.IAL EQUATIOn. In.OLVIn. GROn.ALL'S In.QUALITY In.BAn.CH SPACES

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Acta Mathematica Scien.ia 2013年第3期33卷 758-772页

作者： Dimplek.mar n. CHALISHAJAR k. k.RTHIk.YAn Departmen. of Mathematics an. Computer Scien.e Virginia Military Institute (VMI) 417 Mallory HallLexington VA 24450 USA Departmen. of Mathematics KSR College of TechnologyTiruchengode-637 215 Tamilnadu India

We study boun.ary value problems for fraction.l in.egro-differen.ial equation. in.olvin. Caputo derivative of order α∈ （n.1, n. in.Ban.ch spaces. Existen.e an. un.quen.ss results of solution. are established by virtue of the Holder＇s in.quality, a suitable sin.ular Cron.all＇s in.quality an. fixed poin. theorem via a priori estimate method. At last, examples are given.to illustrate the results.

关键词： Boun.ary value problems fraction.l order in.egro-differen.ial equation. boun.-ary value problems existen.e an. un.quen.ss sin.ular gron.all in.quality fixed poin. theorem

Lan.in. gear n.ise con.rol usin. perforated fairin.s

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Acta Mechan.ca Sin.ca 2010年第2期26卷 159-174页

作者： k. Boorsma X. Zhan. n. Molin Un.versity of Southampton Southampton SO171BJ UK Airbus Operation. S.A.S 316 Route de Bayonne 31060 Toulouse Cedex 03 France

Lan.in. gears of commercial aircraft mak. an.importan. con.ribution.to total aircraft n.ise in.the approach con.iguration. Usin. fairin.s to shield compon.n.s from high speed impin.emen. reduces n.ise. Furthermore, perforatin. these fairin.s has been.con.irmed by flight tests to further en.ble n.ise reduction. Followin. an.earlier fun.amen.al study of the application.of perforated fairin.s, a study has been.performed to in.estigate an. optimize the ben.fits of bleedin. air through lan.in. gear fairin.s. By mean. of win. tun.el tests, an.aerodyn.mic an. acoustic survey has been.performed on.a simplified gen.ric main.lan.in. gear to explore the in.luen.e of （perforated） fairin.s on.the lower part of the gear. The results show that for this specific case, the application.of impermeable fairin.s reduces n.ise in.the mid- an. high frequen.y ran.e by shieldin. sharp edged compon.n.s from high velocity impin.emen.. However, below 1 k.z the n.ise is shown.to in.rease sign.fican.ly. Application.of the perforation. is shown.to dimin.sh this low frequen.y in.rease whilst main.ain.n. the reduction.in.the mid- an. high frequen.y ran.e. The aerodyn.mic an. acoustic measuremen.s poin. in.the direction.of the separated flow of the fairin.s in.eractin. with the down.tream gear compon.n.s respon.ible for the low frequen.y n.ise in.rease. Bleedin. of the air through the fairin.s reduces the large scale turbulen.e in.the proximity of these compon.n.s an. hen.e dimin.shes the low frequen.y n.ise in.rease.

关键词： Lan.in. gear · Aerodyn.mics · Acoustics

Review on.electromagn.tic weldin. of dissimilar materials

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Fron.iers of Mechan.cal En.in.erin. 2016年第4期11卷 363-373页

作者： k. SHAn.HALA T. n. SREEn.VASA Mechan.cal Departmen. AMC Engineering College Bangalore IndiaE-mail: kshanthala2@***

Electromagn.tic weldin. (EMW) is a highspeed join.n. techn.que that is used to join.similar or dissimilar metals, as well as metals to n.n.metals. This techn.que uses electromagn.tic force to main.y join.con.uctive materials. Un.ik. con.en.ion.l join.n. processes, the weld in.erface does n.t melt, thus k.epin. the material properties in.act. Extremely high velocity an. strain.rate in.olved in.the process facilitate exten.in. the EMW techn.que for join.n. several materials. In.this paper, the research an. progress in.electromagn.tic weldin. are reviewed from various perspectives to provide a basis for further research.

关键词： electromagn.tic weldin. impact dissimilar materials

Parameter Optimization.Study on.Con.rol of Distortion.in.Bright Bar Used In.Rack.Application.Subjected To In.uction.Heat Treatmen.

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材料热处理学报 2004年第5期25卷 579-581页

作者： k. Palan.radja n. Alagumurthi V. Soun.ararajan Departmen. of Mechan.cal En.in.erin. Pondicherry Engineering College India Department of Mechanical Engineering Pondicherry Engineering College IndiaDepartment of Mechanical Engineering Pondicherry Engineering College India

The en.in.erin. properties of metals an. alloys are related to their structures. The chan.e in.mechan.cal properties of the metals an. alloys can.be achieved by the process of heat treatmen.. In.uction.harden.n. is on. such a process in.olves phase tran.formation.by rapid heatin. an. coolin. of the outer surface. In.uction.harden.n. improves the outer surface hardn.ss an. wear resistan. properties k.epin. the origin.l toughn.ss an. ductility in.the in.er core. However past experien.es shows that durin. heat treatmen., parts have un.ergon. dimen.ion.l chan.es due to thermal fluctuation. an. phase tran.formation.. Dimen.ion.l chan.es can.lead to excessive distortion.in.the compon.n. which always presen.ed difficulties to the uses of man. varieties of steels which can.be harden.d by in.uction.harden.n.. The dimen.ion.l chan.es in.compon.n.s which have been.in.uction.harden.d have for a lon. time proved costly an. troublesome to man.facturers. These difficulties apply particularly in.the automotive in.ustry where the amoun. of distortion.in.rack.an. pin.on.assembly has been.related to their n.ise level in.operation.an. in.estigators have suggested a lin. between.distortion.an. the in.tiation.of fatigue failure. [1] Although the complete elimin.tion.of distortion.would be an.ideal aim, man.facturers are recon.iled to the fact that a certain.amoun. of distortion.is an.in.eren. part of the harden.n. process. However, if the amoun. of distortion.is un.form an. predictable, an.allowan.e could be made in.the in.tial machin.n. operation.. It was with these aims that in.estigation. in.o the con.rol of distortion.in.bright bar (En.18D steel) used in.rack.application.(Power steerin. assembly) have been.carried out by parameter optimization

关键词：感应加热淬火变形 En.8D钢析因法回归模型