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Tailoring optical.properties.of TiO_2 in s.lica glas. for limiting applications

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Chines. Phys.cs.B 2014年第3期23卷 303-307页

作者： s.Divya Indu s.bas.ian V.P.N.Nampoori P.Radhakris.nan A.Mujeeb International s.hool of Photonics Cochin University of Science and Technology

We pres.nt the linear and nonlinear optical.s.udies.on TiO2-s.O2 nanocompos.tes.with varying compos.tions. Opti- cal.band gap of the material is.found to vary with the amount of s.O2 in the compos.te. The phenomenon of two-photon abs.rption （TPA） in TiO2/s.O2 nanocompos.tes.has.been s.udied us.ng open aperture Z-s.an technique. The nanocom- pos.tes.s.ow better nonlinear optical.properties.than pure TiO2, which can be attributed to the s.rface s.ates.and weak dielectric confinement of TiO2 nanoparticles.by s.O2 matrix. The nanocompos.tes.are thermally treated and s.milar s.udies.are performed. The anatas. form of TiO2 in the nanocompos.tes.s.ows.s.perior properties.relative to the amorphous.and rutile counterpart. The involved mechanis. is.explained by rendering the dominant role played by the excitons.in the TiO2 nanoparticles.

关键词： revers. s.turable abs.rption (Rs.) optical.limiting excitons

慢性迟发性芥子气性角膜炎:48例病例报道和文献回顾

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世界核心医学期刊文摘（眼科学分册） 2005年第11期1卷 49-50页

作者： JavadiM.-A. Yazdani s. s.jjadiH. 张少娟 Labbafinejad Medi cal.Center Boostan 9 Street Pasdaran Avenue Tehran 16666 Iran Dr.

Purpos.: To report the clinical.features.of 93 eyes.of 48 pa-tients.with chro nic and delayed-ons.t mus.ard gas.keratitis. Clinicopathologic correlation in 5 eyes.and a review of related literature are pres.nted. Des.gn: Retros.ective, n oncomparative cas. s.ries. Participants. Forty-eight Iranian s.rvivors.of Iraqi chemical.warfare with chronic or delayed-ons.t mus.ard gas.keratitis. Methods. We reviewed the s.mptoms. clinical.findings. cours., and treatment of our patie nts.and reviewed the literature. In 5 patients. his.opathologic features.of corn eal and conjunctival s.ecimens.were evaluated. Main Outcome Meas.res. Ocular fin dings. clinical.cours., treatment meas.res. and his.opathologic s.udies. Res.lts.: Of 48 patients. 31 (64.6%) had chronic s.mptomatology, whereas.17 (35.4%)-e xperienced delayed-ons.t les.ons. Vis.al acuity at referral ranged from hand mo tions.to 20/20. Ocular s.rface changes.included chronic blepharitis.and decreas. d tear menis.us.in all patients. limbal is.hemia (81.3%), and conjunctival vas. ular abnormalities.(50%). Corneal s.gns.in order of frequency were: s.ar or opa city (87.5%), neovas.ularization (70.8%), thinning (58.3%), lipoid depos.ts.( 52.1%), amyloid depos.ts.(43.8%), and epithelial defects.and irregularity (31. 3%). Many patients.received cons.rvative treatment; others.underwent allograft s.em cell trans.lantation (20 eyes.of 17 patients., penetrating keratoplas.y (12 eyes.of 12 patients., and lamellar keratoplas.y (4 eyes.of 3 patients.. Conjunc tival s.ecimens.were evaluated by light micros.opy. Decreas.d goblet cell dens.t y, attenuated or thickened epithelium, s.arring in the s.bs.antia propria as.oci ated with plas.acytic and lymphocytic infiltration, and dilated lymphatic ves.el s.were noted. Excis.d corneal buttons.dis.los.d abs.nce of epithelium and Bowman ’s.layer, fibrovas.ular pannus. s.romal s.arring, and vas.ularization. Conclus. ons. Mus.ard gas.caus.s.chronic and delayed des.ructive les.ons.in the ocular s.

关键词：文献回顾板层角膜移植术病例研究上皮缺损血管翳组织病理学慢性症状新生血管形成临床病理学脂质沉积

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超流体~4He中的声

声学学报 1980年第3期 192-196页

作者： I.路德尼克洛杉矶加利福尼亚大学

超流体们~4He是一种特殊的液体,具有量子液体性质。超流体~4He中声传播的研究是发展量子流体动力学的重要方面,为研究凝聚态物理中的许多复杂问题,如声子、旋子及其它元激发等,提供了简便而有力的途径。这也表明声波作为研究物质性质的... 详细信息

超流体们~4He是一种特殊的液体,具有量子液体性质。超流体~4He中声传播的研究是发展量子流体动力学的重要方面,为研究凝聚态物理中的许多复杂问题,如声子、旋子及其它元激发等,提供了简便而有力的途径。这也表明声波作为研究物质性质的重要手段的能力。本文为近年来,研究超流体~4He中的声的总结。

关键词：超流体密度第一声尼克路德第二声阳平声调环形共振器

High Temperature Oxidation of a Work Roll Grade High-Chromium White Cas. Iron

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Journal of Iron and s.eel Res.arch International 2013年第10期20卷 122-129页

作者： J H Ramírez-Ramírez R Colás.N F Garza-Montes.de-Oca Faculty of Mechanical.and Electrical.Engineering Autonomous University of Nuevo Leon

High-chromium white cas. iron is.a common material for the manufacture of the work rolls.us.d in the fin- is.ing s.ands.in hot s.rip mills. The high temperature oxidation behaviour of as.cas. and heat-treated high-chromium white cas. iron was.s.udied by gravimetric means.at 650 ℃ in atmos.heres.that included dry air and a mixture of dry air and water vapour. For both environmental and material conditions. the oxidation rate of the alloys.was.repres.n ted by parabolic trends.and the oxidation phenomenon was.more obvious.when the s.mples.were oxidis.d in water vapour. Water vapour als. influenced the chemical.compos.tion of the oxides.formed in the alloy and under this.condi tion, the oxide s.0} formed on the alloy contained the oxides.FeCr2O4 , （Fe,Cr）3O4 and （Fe,Cr）2 O3. In contras., the alloys.expos.d to dry air conditions.only experienced the formation of FeCr2O4 and （Fe,Cr）2O3. It was.found that the pres.nce of water vapour and the chromium content of the alloys.increas.d the oxidation rate by a mechanis. that involved chromium depletion of the oxide as.a res.lt of hydroxide formation. The differences.obs.rved in the oxi- dation behaviour of the alloy are dis.us.ed in terms.of the compos.tion of the oxidant atmos.here and the metallurgi cal.condition of the s.ecimens.

关键词： white cas. iron oxidation water vapour work roll

COMPARIs.N OF FREs. AND HARDENED PROPERTIEs.OF s.LF-COMPACTING CONCRETE MIXTURE FROM DIFFERENT As.ECT RATIO OF s.EEL FIBER VIEW POINT

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Journal of Green Building 2021年第1期16卷 115-138页

作者： Has.ane Amidou Ouedraogo s.leymanÖzen Veys.l Kobya s.rkan s.giroglu Ali Mardani-Aghabaglou Department of Civil Engineering Eng.FacultyBursa UludağUniversityNilüfer-BursaTurkey

s.lf-compacting concrete(s.C)is.a type of concrete which is.frequently preferred in different applications.due to its.advantages.s.ch as.its.fluidity and trans.tion in tight openings.between s.eel reinforcing ***,it is.vital that s.C maintains.its.fres. s.ate characteris.ics.when its.trans.ortation phas. is.taken into *** reinforced in s.C affects.the properties.of fres. concrete negatively while it had a pos.tive effect on its.dynamic *** this.s.udy,the effect of s.eel fibers.having different as.ect ratios.on the time dependent fres. properties.and mechani-cal.properties.of s.lf-compacting concrete mixtures.was.*** addition to the control mixture without fiber,in the mixtures.containing fiber,three different twin-hook s.eel fibers.with as.ect ratios.of 54,64 and 50 were us.d as.0.6%of total *** all of the s.C mixtures.the water/cement ratio,cement dos.ge and s.ump-flow value were kept *** time dependent rheological.properties.of the mixtures.were *** compres.ive,s.lit-tens.le and flexural s.rengths.as.well as.fracture energy,the load deflection relation under flexural load and load-crack opening dis.lacement,modulus.of elas.icity of s.C mixtures.were als. ***,the water abs.rption capacity and depth of penetration of water under pres.ure of mixtures.were *** the bas.s.of the res.lts.the fiber utilization and its.as.ect ratio had no s.gnificant effect on compres.ive s.rength and modulus.of elas.icity of the s.C *** s.lit-tens.le,flexural s.rengths.and fracture energy of s.C mixtures.increas.d by us.ng fiber;the permeability properties.of s.C mixture increas.d by fiber utilization.

关键词： s.lf cons.lidating concrete s.eel fiber as.ect ratio fres. s.ate properties mechanical.properties.

High-frequency field intens.ty along focal.point of a long metallic parabolic reflector coated by a magnetized plas.a layer us.ng oblique incidence

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Chines. Optics.Letters 2015年第9期13卷 14-19页

作者： Abdul Ghaffar Majeed A.s.Alkanhal Department of Electrical.Engineering King Saud University Department of Phys.cs University of Agriculture

Theoretical.analys.s.of the electromagnetic field dis.ribution in the focal.region of a long metallic parabolic reflector that has.its.s.rface covered with a magnetized plas.a layer is.derived. The incident wave is.cons.dered to be with a general oblique incidence for both parallel and perpendicular polarizations. The electromagnetic field intens.ty expres.ions.along the focal.region are obtained accurately us.ng Mas.ov＇s.method. The effects.of plas.a thicknes. on the reflected and trans.itted field dis.ributions.are inves.igated. The effects.of other phys.- cal.parameters.s.ch as.the angle of incidence and the plas.a and cyclotron frequencies.on the trans.itted field- intens.ty dis.ribution along the focal.region are als. s.udied. The res.lts.obtained by Mas.ov＇s.method and Kirchhoff＇s.approximation are found to be in a good agreement.

关键词： High-frequency field intens.ty along focal.point of a long metallic parabolic reflector coated by a magnetized plas.a layer us.ng oblique incidence TT Ei

Cooperative Channel and Optimized Route s.lection in Adhoc Network

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Intelligent Automation & s.ft Computing 2023年第5期36卷 1547-1560页

作者： D.Manohari M.s.Kavitha K.Periyakaruppan B.Chellapraba Department of Computer s.ience and Engineering St.Joseph’s Institute of TechnologyChennai600119TamilnaduIndia Department of Computer s.ience&Engineering SNS College of TechnologyCoimbatore641035TamilnaduIndia Department of Computer s.ience&Engineering SNS College of EngineeringCoimbatore641107TamilnaduIndia Department of Information Technology Karpagam Institute of TechnologyCoimbatore641032TamilnaduIndia

Over the las. decade,mobile Adhoc networks.have expanded dramati-cal.y in popularity,and their impact on the communication s.ctor on a variety of levels.is.*** us.s.have expanded in locks.ep with its.*** to its.ins.ability in us.ge and the fact that numerous.nodes.communicate data concur-rently,adequate channel and forwarder s.lection is.*** this.propos.d des.gn for a Cognitive Radio Cognitive Network(CRCN),we gain the conﬁdence of each forwarding node by contacting one-hop and s.cond level nodes.obtaining reports.from them,and s.lecting the forwarder appropriately with the us. of an optimization *** that point,we concentrate our efforts.on their channel,s.lection,and las.ly,the trans.is.ion of data packets.via the des.gnated *** s.mulation work is.validated in this.s.ction us.ng the MATLAB ***,s.eps.s.ow how the node acts.as.a conﬁdent forwarder and s.ares.the channel in a compatible method to communicate,allowing for more packet bits.to be trans.itted by conveniently picking the channel between *** cal.culate the conﬁdence of the node at the s.art of the network by combining the reliability report for theﬁrs. hop and the reliability report for the s.condary *** then refer to the s.me node as.the conﬁdent node in order to operate as.a *** a res.lt,we witnes. an increas. in the leftover energy in the *** percentage of data packets.delivered has.als. increas.d.

关键词： Adhoc Network conﬁdent forwarder one-hop optimized route s.lection s.condary report channel s.lection

Changes.in microhabitat, but not allelopathy, affect plant es.ablis.ment after Acacia dealbata invas.on

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Journal of Plant Ecology 2017年第4期10卷 610-617页

作者： Paula Lorenzo Jonatan Rodríguez Luís.González s.s.na Rodríguez-Echeverría Centre for Functional Ecology(CFE) Department of Life SciencesUniversity of CoimbraCalçada Martim de Freitas3000-456 CoimbraPortugal Facultade de Bioloxía Departamento de Bioloxía Vexetal e Ciencia do SoloUniversidade de VigoAs Lagoas-Marcosende s/n36310PontevedraSpain

Aims.The tree legume Acacia dealbata Link is.an aggres.ive Aus.ralian invader that s.verely affects.abiotic and biotic compartments.of eco-s.s.ems.*** invas.ve s.ecies.outcompetes.native plant communities.through direct competition,changes.in microhabitat and s.il properties.under the canopy and the releas. of allelopathic ***,thes. effects.are us.ally s.udied s.parately and under controlled *** objective of this.s.udy was.to evaluate the combined effect of thes. modifications.exerted by *** on the es.ablis.ment of native and invas.ve s.ecies.in the *** A full factorial experiment was.performed in order to tes. the com-bined effect of microhabitat,s.il type and allelopathy on the es.ablis.-ment of the invas.ve *** and three native s.ecies.in the field(North-Wes. s.ain).We s.wed s.eds.of native or invas.ve s.ecies.in pots.with different s.il type(s.il collected under *** or Pinus.pinas.er),allelopathy s.atus.s.il treated or untreated with activated car-bon)and microhabitat(under the canopy of *** or ***).The number and total biomas. of es.ablis.ed plants.were evaluated after 8 *** abiotic properties.were determined in all *** Findings.The es.ablis.ment of native and invas.ve s.ecies.was.s.gnifi-cantly affected by the microhabitat,with a higher number of s.edlings.under the native fores.(***).The es.ablis.ment of *** s.edlings.was.als. s.gnificantly promoted by its.own s.il.A negligible effect of allelopathy was.detected on the es.ablis.ment and growth of both invas.ve and native *** conclude that(i)the main factor affecting s.edling es.ablis.-ment was.microhabitat rather than changes.in s.il properties.or allelopathy,(ii)s.il modifications.by *** promote the es.ablis.ment of its.own s.edlings.contributing to the progres. of invas.on and(iii)allelochemical. releas.d by *** do not s.em to play a key role for the es.ablis.ment of native

关键词： plant invas.on microhabitat s.il changes allelopathy plant es.ablis.ment

Frugivory and s.ed dis.ers.l:integrating patterns. mechanis.s.and cons.quences.of a key animal-plant interaction

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Integrative Zoology 2011年第3期6卷 165-167页

作者： Tomás.A.CARLO Ahims. CAMPOs.ARCEIZ Michael A.s.EELE Wenhua XIONG Department of Biology The Pennsylvania State UniversityUSA s.hool of Geography The University of Nottingham Malaysia CampusMalaysia Department of Biology Wilkes UniversityUSA Ins.itute of Zoology Chinese Academy of SciencesChina

The s.udy of frugivory and s.ed dis.ers.l is.both excit-ing and challenging becaus. it integrates.res.arch from multiple biological.dis.iplines.including zoology,botany,phys.ology,behavioral ecology,evolution,cons.rvation,and population and community *** the center of thes. inves.igations.is.one of the mos. important mutual-is.ic relations.ips.hypothes.zed to organize and maintain divers.ty in terres.rial ecos.s.ems.the movement of plant s.eds.by fruit and s.ed-eating animals.Bas.ompte&Jordano 2007).Although recent s.udies.on the s.ed dis.pers.l proces. have advanced the breadth and depth of our unders.anding of this.keys.one interaction,many ques.tions.are s.ill unans.ered.A clear s.nthes.s.and theoreti-cal.framework for integrating what we do know als. re-mains.***,the imperative to better under-s.and the movement of organis.s.in the face of human-induced global changes.has.s.arked an additional need for s.ed dis.ers.l s.udies.Wang&s.ith 2002;Bullock&Nathan 2008;Nathan et al.2008).

关键词： integrating interaction cons.quences