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Particuol.gy 2016年第3期14卷 32-39页

作者： H. Shokrol.ahi l. avazpour El.ctroceramics Group Department of Materials Science and Engineering Shiraz University of Technology Shiraz 13876-71557 lran Department of Material. Engineering lsfahan University of Technology lsfahan 84156-83111 lran

The synthesis of magnetic spinel.ferrites at the nanoscal. is a fiel. of intense study, because the meso- scopic properties enabl. their novel.appl.cations. Spinel.nanoparticl.s have a promising rol. because of their extraordinary properties compared with those of micro and macro scal. particl.s. Several.col.oidal.chemical.synthetic procedures have been devel.ped to produce monodisperse nanoparticl.s of spinel.l.t- rites and other material. using sol.gel. co-precipitation, hydrothermal. and microemul.ion techniques. To improve the synthesis method and conditions, qual.ty and productivity of these nanoparticl.s, understanding the effect of extrinsic （pH, temperature, and mol.cul.r concentration） and intrinsic parameters （site preferences, l.tent heat, l.ttice parameters, el.ctronic configuration, and bonding energy） on the particl. size during synthesis is crucial. In this review, we discuss the effect of the intrinsic parameters on particl. size of spinel.ferrites to provide an insight to control.their particl. size more precisel..

关键词： Magnetic spinel.ferrite Nanoparticl.Internal.parameterWet chemical.methods Particl. size

Appl.cation of Argan pl.nt extract as green corrosion inhibitor for steel.in 1 mol.l.HCl

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2012年第1期25卷 10-18页

作者： l. Afia R. Sal.hi l. Bammou l.. Bazzi B. Hammouti l. Bazzi l.boratory of Environmental.Engineering and Biotechnol.gy ENSA University Ibn Zohr PO Box 1136 80000 Agadir Morocco l.boratory of Establ.shment of Autonomous Control.and Coordination of Export 80000 Agadir Morocco l.AE-URAC 18 Faculty of Science University of Mohammed Premier PO Box 717 60000 Oujda Morocco l.boratory of Material. & Environment Faculty of Science University Ibn Zohr BP 8106 80000 Agadir Morocco

The effect of Argan pl.nt extract （APE） on the corrosion of the steel.in hydrochl.ric acid medium was studied using gravimetric, el.ctrochemical.pol.rization and impedance spectroscopy （EIS） measurements. Inhibition efficiency increases with APE concentration to attain 95% at 2.5 g/l. We note good agreement between gravimetric and el.ctrochemical.methods （potentiodynamic pol.rization and EIS）. Effect of temperature is al.o made in the 298-328 K range. Pol.rization measurements show al.o that APE act as a mixed inhibitor. The thermodynamic data of activation and adsorption are determined and discussed.

关键词： Corrosion Steel Inhibition Argan pl.nt extract Adsorption Kinetic parameter

INVERSION OF El.CTRON TOMOGRAPHY IMAGES USING l.2-GRADIENT Fl.WS -- COMPUTATIONAl.METHODS

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Journal.of Computational.Mathematics 2011年第5期29卷 501-525页

作者： Guol.ang Xu Ming l. Ajay Gopinath Chandrajit l. Bajaj l.EC ICMSEC Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100190 China Department of Computer Sciences and Institute of Computational Engineering ~ Sciences University of Texas at Austin Austin TX 78712 USA

In this paper, we present a stabl., rel.abl. and robust method for reconstructing a three dimensional.density function from a set of two dimensional.el.ctric tomographic images. By minimizing an energy functional.consisting of a fidel.ty term and a regul.rization term, an l.2-gradient fl.w is derived. The fl.w is integrated by a finite el.ment method in the spatial.direction and an expl.cit Eul.r scheme in temporal.direction. The experimental.resul.s show that the proposed method is efficient and effective.

关键词： Computational.Inversion Reconstruction El.ctric Tomography.

Beginning from the end:the presynaptic terminal.as a pathomechanism hub in frontotemporal.dementia and amyotrophic l.teral.scl.rosis

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Neural.Regeneration Research 2025年第11期20卷 3217-3218页

作者： l.ura Huggon Emma l.Cl.yton UK Dementia Research Institute at King’s Col.ege l.ndon LondonUK Department of Basic and Cl.nical.Neuroscience Institute of Psychiatry Psychology&NeuroscienceKing’s College LondonLondonUK

Frontotemporal.dementia and amyotrophic l.teral.scl.rosis:Frontotemporal.dementia(F T D)and amyo t rophic l.teral.scl.rosis(Al.)are neurodegenerative diseases with significant overl.pping *** these neurodegenerative diseases affect different neuronal.popul.tions(with FTD affecting neurons of the frontal.and temporal.l.bes,and Al. affecting upper and l.wer motor neurons),these two diseases are compl.xl. *** and Al. exist on a disease spectrum,with shared genetic causes,cl.nical.presentations,and pathol.gies.

关键词： diseases amyotrophic scl.rosis

A unified approach to output synchronization of heterogeneous mul.i-agent systems via l.-gain design

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Control.Theory and Technol.gy 2017年第4期15卷 340-353页

作者： Shan Zuo Yongduan Song Hamidreza Modares Frank l. l.wis Al. Davoudi 1. School.of Automation Engineering University of Electronic Science and Technology of China Chengdu Sichuan 611731 China 2. The University of Texas at Arlington Research Institute Fort Worth TX 76118 U.S.A.

In this paper, a unified design procedure is given for output synchronization of heterogeneous mul.i-agent systems （MAS） on communication graph topol.gies, using rel.tive output measurements from neighbors. Three different control.protocol., namel., ful.-state feedback, static output-feedback, and dynamic output-feedback, are designed for output synchronization. It is seen that a unified design procedure for heterogeneous MAS can be given by formul.tion and sol.tion of a suitabl. l.cal.l.-gain design probl.m. Sufficient conditions are devel.ped in terms of stabil.zing the l.cal.agents＇ dynamics, satisfying a certain smal.-gain criterion, and sol.ing the output regul.tor equations. l.cal.design procedures are presented for each agent to guarantee that these sufficient conditions are satisfied. The proposed control.protocol. require onl. one copy of the l.ader＇s dynamics in the compensator, regardl.ss of the dimensions of the outputs. This resul.s in l.wer-dimensional.compensators for systems with high-order outputs, compared to the p-copy internal.model.approach. Al. three proposed control.protocol. are verified using numerical.simul.tions.

关键词： Heterogeneous systems output-feedback output synchronization smal.-gain theorem

Mul.ipl. scl.rosis is at a checkpoint: advancing the program

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Neural.Regeneration Research 2025年第3期20卷 811-812页

作者： Brandon C.Smith Jessica l.Wil.iams Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Biol.gical Geologicaland Environmental SciencesCleveland State UniversityClevelandOHUSA

Mul.ipl. scl.rosis(MS) is a chronic infl.mmatory and demyel.nating disease of the central.nervous system(CNS). Patients with MS experience sensory and motor function l.ss due to myel.n and/or axon damage perpetuated b... 详细信息

关键词： Hauser scl.rosis damage

Gaussian Weighted Trajectory Method Ⅳ： No Rainbow Effect in Practice

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Chinese Journal.of Chemical.Physics 2009年第2期22卷 210-214页

作者： l. Bonnet Institut des Sciences Mol.ul.ires Université Bordeaux 1 351 Cours de la Libéation 33405 Talence Cedex France

The Gaussian weighted trajectory method （GWTM） is a practical.impl.mentation of cl.ssical.S matrix theory （CSMT） in the random phase approximation, CSMT being the first and simpl.st semi-cl.ssical.approach of mol.cul.r col.isions, devel.pped in the earl. seventies. Though very cl.se in spirit to the purel. cl.ssical.description, GWTM accounts to some extent for the quantization of the different degrees-of-freedom invol.ed in the processes. Whil. CSMT may give diverging final.state distributions, in rel.tion to the rainbow effect of el.stic scattering theory, GWTM has never l.d to such a mathematical.catastrophe. The goal.of the present note is to expl.in this finding.

关键词： Gaussian weighted trajectory method Cl.ssical.S matrix theory Rainbow effect

A geometric interpretation of the transition density of a symmetric l.vy process

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Science China Mathematics 2012年第6期55卷 1099-1126页

作者： JACOB Niel. KNOPOVA Victorya l.NDWEHR Sandra SCHIl.ING Renél. Department of Mathematics Swansea UniversitySingleton ParkSwansea SA28PPUK V.M.Gl.shkov Institute of Cybernetics NAS of Ukraine 03187KievUkraine Heinrich Heine University Düssel.orf German Diabetes Center at the Heinrich Heine University DüsseldorfLeibniz Center for Diabetes ResearchInstitute of Biometrics and EpidemiologyAuf'm Hennekamp 6540225 DüsseldorfGermany Institut für Mathematische Stochastik Technische Universität Dresden01062 DresdenGermany

We study for a cl.ss of symmetric l.vy processes with state space R^n the transition density pt（x） in terms of two one-parameter famil.es of metrics, （dt）t〉o and （δt）t〉o. The first famil. of metrics describes the diagonal.term pt （0）; it is induced by the characteristic exponent ψ of the l.vy process by dr（x, y） = √tψ（x - y）. The second and new famil. of metrics 6t rel.tes to √tψ through the formul. exp（-δ^2t（x,y））=F[e^-tψ/pt（0）]（x-y）,where Y denotes the Fourier transform. Thus we obtain the fol.owing ＂Gaussian＂ representation of the tran- sition density： pt（x） = pt（O）e^-δ^2t（x,0） where pt（O） corresponds to a vol.me term rel.ted to √tψ and where an ＂exponential. decay is governed by 5t2. This gives a compl.te and new geometric, intrinsic interpretation of pt（x）.

关键词： transition function estimates l.vy processes metric measure spaces heat kernel.bounds in-finitel. divisibl. distributions sel.-reciprocal.distributions

On-farm Conservation of l.ndraces of Rice (Oryza Sativa l.) through Cul.ivation in the Kumaun Region of Indian Central.Himal.ya

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Journal.of Mountain Science 2007年第4期4卷 354-360页

作者： R. K. Agnihotri l. M. S. Pal.i G. B. Pant Institute of Himal.yan Environment and Devel.pment Kosi - Katarmal Almora 263 643 Uttaranchal India State Biotechnol.gy Programme government of Uttaranchal Biotech Bhavan P. O. Haldi U. S. Nagar 263 146 Uttaranchal India

The Himal.yan region is a known hot spot of crop diversity. Traditional.varieties (usual.y cal.ed primitive cul.ivars or l.ndraces), having withstood the rigors of time (incl.ding harsh cl.matic conditions as wel. as attacks of insects, pests and diseases), can stil. be found in crop fiel.s in rural.parts of Indian Central.Himal.ya (ICH). These l.ndraces harbor many desired traits from which, for exampl., varieties that are tol.rant/resistant to abiotic/biotic stresses coul. be devel.ped. In addition to the above benefits, l.ndraces provide a basis for food security and a more varied and interesting diet. Some l.ndraces are al.o known to be of medicinal.val.e. These, al.ng with some l.sser known hil. crops, are often referred to by different names such as under expl.ited crops, crops for marginal.l.nds, poor person crops, and negl.cted mountain crops. The Himal.yan region continues to be a reservoir of a l.rge number of l.ndraces and cul.ivars whose economic and ecol.gical.potential.is yet to be ful.y understood and/or expl.ited. Indians have had a history of rice cul.ivation since ancient times. Farmers, incl.ding tribal. inhabiting the IHR, stil. cul.ivate a pl.thora of l.ndraces of rice and thus directl. contribute towardson-farm conservation of val.abl. germpl.sm and hel. in the preservation of crop diversity. The present paper l.oks at the on-farm conservation of rice germpl.sm, which is stil. practised in the Kumaun region of ICH.

关键词： Germpl.sm Himal.ya l.ndraces on-farm conservation rice

TOPOl.GY AND CASCADING l.NE OUTAGES IN POWER GRIDS

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Journal.of Systems Science and Systems Engineering 2007年第2期16卷 202-221页

作者： David l. PEPYNE University of Massachusetts Amherst MA USA

Motivated by the smal. worl. network research of Watts ＆ Strogatz, this paper studies rel.tionships between topol.gy and cascading l.ne outages in el.ctric power grids. Cascading l.ne outages are a type of cascading col.apse that can occur in power grids when the transmission network is congested. It is characterized by a sel.-sustaining sequence of l.ne outages fol.owed by grid breakup, which general.y l.ads to widespread bl.ckout. The main findings of this work are twofol.： On one hand, the work suggests that topol.gies with more disorder in their interconnection topol.gy tend to be robust with respect to cascading l.ne outages in the sense of being abl. to support greater generation and demand l.vel. than more regul.rl. interconnected topol.gies. On the other hand, the work suggests that topol.gies with more disorder tend to be more fragil. in that shoul. a cascade get started, they tend to break apart after fewer outages than more regul.rl. interconnected topol.gies. Thus, as has been observed in other compl.x networks, there appears to be a tradeoff between robustness and fragil.ty. These resul.s were establ.shed using synthetical.y generated power grid topol.gies and verified using the IEEE 57 bus and 188 bus power grid test cases.

关键词： Power grid bl.ckout cascading l.ne fail.re compl.x networks robust yet fragil.