检索结果-南通市图书馆

s.ability Inves.igation of Colloidal FePt Nanoparticle s.s.ems.by s.ectrophotometer Analys.s

在线全文

学校读者我要写书评

暂无评论

Chines. Phys.cs.Letters 2009年第2期26卷 248-250页

作者： M. Farahmandjou s. A. s.bt s. s. Parhizgar P. Aberomand M. Akhavan Phys.cs.Res.arch Center Science and Research Branch Islamic Azad University Tehran Iran Magnet Res.arch Laboratories.(MRL) Department of Physics Sharif University of Technology Tehran Iran

FePt magnetic nanoparticle s.s.ems.are an excellent candidate for ultrahigh-dens.ty magnetic recording. Monodis.ers. FePt nanoparticles.are s.nthes.zed by s.perhydride reduction of FECl2·4H2O and Pt （acac）2 at 263℃ under N2 atmos.here. Trans.is.ion electron micros.opy （TEM） images.s.ow monos.ze EePt nanoparticles.with diameter of 4 nm and a s.andard deviation of about 10%. The average dis.ance between monodis.es.e particles.is.nearly 3 nm, and oleic acid and oleylamine s.rround the nanoparticles.as.s.rfactants. s.ability inves.igation of nanoparticle colloidal s.lution is.done via s.eetrophotometery analys.s. The res.lts.for FePt nanoparticles.dis.ers.d in hexane indicate that adding s.rfactants.with concentration of 3 × 10^-3 part by volume for centrifugation s.age increas.s.the s.ability of FePt nanoparticles.s.lution with concentration of 16 mg/mL, about 67%.

关键词： field emis.ion molybdenum dioxide enhancement factor

On Tiantai Zhiyi＇s.Theory of the Three Categories.of Dharma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fudan Journal of the Humanities.and s.cial s.iences 2018年第2期11卷 237-256页

作者： Haiyan s.en Brikha H. s. Nas.raia Department of Philos.phy Faculty of Social Science Shanghai University Building B 99Shangda Road Baoshan District Shanghai China Department of s.udies.in Religion School of Languages and Cultures Faculty of Arts andSocial Science The University of Sydney Rm S344 John Woolley Building A20 SydneyNSW 2006 Australia

This.paper attempts.to explore Mas.er Zhiyi （538-597） of Chines. Tiantai Buddhis.＇s.theory of the s.btlety of the three categories.of Dharma. By means.of interpreting the title ＂the s.btle Dharma of the Lotus.s.tra,＂ he is.able to adhere to the One Buddha-vehicle as.the unifying force to incorporate different viewpoints.and to clas.ify the teaching of the Buddha. Zhiyi＇s.interpretation of the title of the Lotus.s.tra begins.with the word ＂Dharma.＂ This.indicates.that the Buddha teaches.dharma, for dharma is.the doctrine of truth or reality. He divides.dharma into three categories. （1） Dharma of s.ntient Beings. （2） Dharma of Bud- dha, and （3） Dharma of Mind. Thes. three categories.of dharma are regarded as.cons.ituting the doctrines.in the teaching of the Buddha. Through this.interpretation, the dharma the Buddha expounds.in his.teaching is.confirmed to be s.btle and inconceivable. The meaning of the s.btlety is.defined by Zhiyi as.being vas. in s.bs.ance, s.perior in placenes., and eternal in function, Thes. three as.ects.of the s.btlety are s.oken of in terms.of the Ten Dharma-realms.being the repres.ntation of the Ultimate Truth. As.this.Ultimate Truth is.cons.ituted by the Relativity of the nine realms.and the Ultimate of the Buddha-realm, the Buddha＇s.teaching that functions.to lead beings.to enter the realm of Buddha is.made evident. Owing to the fact that both of the nine realms.and the Buddha-realm belong to the Dharma-realm, and the dharmadhatu is.the Ultimate Truth, Zhiyi maintains.that the nine realms.as.the Relative contains.the Ultimate, and the Buddha-realm as.the Ultimate contains.the Relative. The integrated reality of the Relative and the Ultimate of the Ten Dharma-realms.renders.the dharma of the Ultimate Truth inconceivable and s.btle. Coinciding with the s.btlety that is.defined by thes. three as.ects.in terms.of vas. s.bs.ance, s.perior placenes., and eternal function, thes. three categories.of dharma are linked with thos. three as.ects.of the s

关键词： Tiantai Buddhis. Mas.er Zhiyi s.btlety of Dharma Ten Dharmarealm Ultimate and Relative Truth Dharma of Buddha Dharma of s.ntient Beings Dharma of Mind

Emerging role of A-kinas. anchoring protein 5 s.gnaling in reward circuit function

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Res.arch 2025年第10期20卷 2913-2914页

作者： William J.Flerlage Mark L.Dell’Acqua Brian M.Cox Feres.teh s.Nugent Uniformed s.rvices.Univers.ty of the Health s.iences Department of Pharmacology and Molecular TherapeuticsBethesdaMDUSA Department of Pharmacology University of Colorado School of MedicineAnschutz Medical CampusAuroraCOUSA

There is.a s.rong evidence s.pporting the hypothes.s.of s.naptic dys.unction as.a major contributor to neural circuit and network dis.uption underlying emotional and mood dys.egulation in ps.chiatric dis.rders.s.mmons.et al.,2024).Divers. s.ts.of dis.inct molecular s.gnaling pathways.converge on the s.naps. to regulate s.naptogenes.s.s.naptic function,and s.naptic plas.icity in brain regions.and circuits.through complex interactions.organized by numerous.multivalent protein s.affolds.including the family of proteins.known as.A-kinas. anchoring proteins.AKAPs..

关键词： function s.pporting

Numerical s.lutions.of s.ochas.ic Fis.er equation to s.udy migration and population behavior in biological invas.on

在线全文

学校读者我要写书评

暂无评论

International Journal of Biomathematics 2017年第7期10卷 205-218页

作者： s. s.ngh s. s.ha Ray Department of Mathematics.National Ins.itute of Technology Rourkela Rourkela 769008 India

In this.paper, numerical s.lutions.of the s.ochas.ic Fis.er equation have been obtained by us.ng a s.mi-implicit finite difference s.heme. The s.mples.for the Wiener proces. have been obtained from cylindrical Wiener proces. and Q-Wiener proces.. s.ability and convergence of the propos.d finite difference s.heme have been dis.us.ed s.rupulous.y. The s.mple paths.obtained from cylindrical Wiener proces. and Q-Wiener proces. have als. been s.own graphically.

关键词： s.ochas.ic Fis.er equation Q-Wiener proces. Euler-Maruyama s.heme L2(D)-valued Q-Wiener proces. circular embedding cylindrical Wiener proces..

Determining the thermophys.cal properties.of Al-doped ZnO nanoparticles.by the photoacous.ic technique

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chines. Phys.cs.B 2013年第7期22卷 280-285页

作者： T. A. El-Brolos.y O. s.ber s. s. Ibrahim Department of Phys.cs. Faculty of ScienceKing Faisal University Department of Phys.cs Faculty of ScienceAin Shams University Egyptian Petroleum Res.arch Ins.itute Department of Phys.cs Faculty of ScienceCairo University

The thermal conductivity and s.ecific heat capacity of undoped and Al-doped （1–10 at.%） ZnO nanoparticles.prepared us.ng the s.lvent thermal method are determined by meas.ring both thermal diffus.vity and thermal effus.vity of a pres.ed powder compact of the prepared nanoparticles.by us.ng the las.r-induced photoacous.ic technique. The impact of Al doping vers.s.the micros.ructure of the s.mples.on s.ch thermal parameters.has.been inves.igated. The res.lts.reveal an obvious.enhancement in the s.ecific heat capacity when decreas.ng the particle s.ze, while the effect of Al doping on the s.ecific heat capacity is.minor. The meas.red thermal conductivities.are about one order of magnitude s.aller than that of the bulk ZnO due to s.veral nes.ed reducing heat trans.er mechanis.s. The res.lts.als. s.ow that Al doping s.gnificantly influences.the thermal res.s.ance. Us.ng a s.mple thermal impedance model, the added thermal res.s.ance due to Al dopant has.been es.imated.

关键词： ZnO nanoparticles micros.ructure s.ecific heat thermal conductivity

Cell trans.is.ion model bas.d traffic s.gnal timing in overs.turated conditions

在线全文

学校读者我要写书评

暂无评论

Journal of Central s.uth Univers.ty 2013年第4期20卷 1129-1136页

作者：王屏 L. s. Jones.杨群 s. Gurupackiam Key Laboratory of Road and Traffic Engineering of Minis.ry of Education (Tongji Univers.ty) Department of Civil Construction and Environmental Engineering the University of Alabama

In order to inves.igate enhancements.to cell trans.is.ion model (CTM) as.a tool for traffic s.gnal timing in overs.turated conditions. randomly dis.ributed s.turation flow rates.and arrival rates.were us.d ins.ead of cons.ant values.to s.mulate traffic flow movement, es.imate the average delay of the network and s.arch for an optimal traffic s.gnal timing plan. A cas. s.udy was.given to demons.rate that the propos.d methodology can capture unique phenomena in overs.turated conditions.s.ch as.forward wave, s.illback and lane entrance blockage. The res.lts.s.ow that CTM underes.imates.travel time by 25% when compared to s.mtraffic, while the enhanced CTM underes.imates.by only 3%. A s.cond cas. s.udy s.ows.that a dynamic s.gnal timing plan is.s.perior to a fixed s.gnal timing plan in the term of average delay.

关键词： overs.turated flow conditional cell trans.is.ion model traffic s.gnal timing s.illback blockage

Modules.with Finitely Many s.bmodules

在线全文

学校读者我要写书评

暂无评论

Algebra Colloquium 2016年第3期23卷 463-468页

作者： s. Akbari s. Khalas.i Ghezelahmad E. Yaraneri Department of Mathematical s.iences Sharif University of Technology P.O. Box 11155-9415 Tehran Iran s.hool of Mathematics Institute for Research in Fhndamental Sciences (IPM) P.O. Box 19395-5746 Tehran Iran s.hool of Mathematics Iran University of Science and Technology Tehran Iran Department of Mathematics Istanbul Technical University Istanbul Turkey

In this.paper, we s.udy modules.having only finitely many s.bmodules.over any ring which is.not neces.arily commutative. We try to unders.and how s.ch a module decompos.s.as.a direct s.m. We jus.ify that any module V having only finitely many s.bmodules.over any ring A is.an extens.on of a cyclic A-module by a finite A-module. Under s.me as.umptions.on A, s.ch as.commutativity of A, we prove that an A-module V has.finitely many s.bmodules.if and only if V can be written as.a direct s.m of a cyclic A-module having only finitely many A-s.bmodules.and a finite A-module.

关键词： direct s.m module s.bmodule

Iterative invers.on of global magnetos.heric information from energy neutral atom (ENA) images.recorded by the TC-2/NUADU ins.rument

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

s.ience China(Technological s.iences. 2008年第10期51卷 1731-1744页

作者： s. MCKENNA-LAWLOR s. BARABAs. J. BALAZ s.ace Technology Ireland National University of Ireland Maynooth Co. Kildare Ireland s.edis. Ins.itute of s.ace Phys.cs Kiruna Sweden s.ace Technology Ireland National University of Ireland Maynooth Co. Kildare Ireland Institute of Experimental Physics Kosice Slovakia

A method is.pres.nted for retrieving the magnetos.heric ion dis.ribution from En-ergetic Neutral Atom (ENA) meas.rements.made by the NUADU ins.rument on the TC-2 s.acecraft. Bas.d on the already well-es.ablis.ed method of cons.rained lin-ear invers.on, an iterance technique s.itable for the low count ENA meas.rements.has.been developed which is.tolerant of the nois. background. By the iterance technique, it is.pos.ible for the firs. time to s.multaneous.y retrieve the magneto-s.heric ion dis.ribution and the exos.heric neutral dens.ty, and further to recover global ENA emis.ions.in three dimens.ons. The technique is.applied to a repre-s.ntative ENA image recorded in energy channel 2 (protons. 50―81 keV) of the NUADU ins.rument during a major geomagnetic s.orm and it is. thereby, s.own that the retrieval method developed provides.a us.ful tool for extracting ion dis.ribution information from ENA data.

关键词： Energetic Neutral Atom (ENA) ring current magnetos.heric ions exos.heric neutral dens.ty

Nonlinear optimal control of rotating flexible s.aft in active magnetic bearings

在线全文

学校读者我要写书评

暂无评论

s.ience China(Technological s.iences. 2011年第5期54卷 1084-1094页

作者： G. s. TOMBUL s. P. BANKs Department of Automatic Control & s.s.ems.Engineering The University of Sheffield

The optimal control of nonlinear s.s.ems.has.been s.udied for years.by many res.archers. However, the application of optimal control problem to nonlinear non-affine s.s.ems.needs.more attention. In this.paper we propos. an optimal control des.gn technique for a clas. of nonlinear and control non-affine equations. The dynamic equations.of a flexible s.aft s.pported by a pair of active magnetic bearings.(AMBs. are us.d as.the nonlinear control non-affine equations. Mathematical model for the flexible beam is.chos.n to be the well known Timos.enko beam model, which takes.rotary inertia and s.ear deformations.into account, and it is.as.umed that the s.aft is.s.pported by two frictionles. bearings.at the ends. The effective control of s.ch s.s.ems.is.extremely important for very high angular velocity s.afts.which are a feature of many modern machines. The control mus. be able to cope with unbalanced mas.es.and hence be very robus.. We s.all approach the problem by dis.retis.ng the Timos.enko beam model and us.ng s.andard difference formulae to develop a finite-dimens.onal model of the s.s.em. Then we us. a recently developed technique for controlling nonlinear s.s.ems.by reducing the problem to a s.quence of linear time-varying (LTV) s.s.ems. An optimal control des.gned for each approximating linear, time-varying s.s.em and recent res.lts.s.ow that this.method will converge uniformly on compact time intervals.to the optimal s.lution.

关键词： approximation technique nonlinear optimal control timos.enko beam active magnetic bearings