检索结果-南通市图书馆

Excellent photoluminescence and.electr.chemical pr.per.ies of Sm^(3+) d.ped.Ca_(2)MgSi_(2)o_(7) nanophosphor.d.splay and.electr.chemical sensor.applications

引用

Jour.al of r.r. Ear.hs 2024年第6期42卷 1046-1055,I0002页

作者： r.B.Basavar.j K.Sur.shkumar.d.P.Aar.i M.B.Mad.usud.na r.d.y G.Nagar.ju T.r.makr.shnappa G.r.Navyashr.e K.r.Venkatesha Babu K.S.Hemalatha d.par.ment of Physics BMS Institute of Technology and ManagementBangalore560064India d.par.ment of Chemistr. BMS Institute of Technology and ManagementBangalore560064India d.par.ment of Chemistr. School of Applied SciencesREVA UniversityBangalore560064India Ener.y Mater.als r.sear.hLabor.tor. Department of ChemistrySiddaganga Institute of TechnologyTumakuru57203KarnatakaIndia School of Physical Sciences REVA UniversityBangalore560057Indi d.par.ment of Physics Govt.Science CollegeBengaluru560001India d.par.ment of Physics Maharani Science College for WomenMaharani Cluster UniversityBengaluru560001India

A ser.es of or.nge-r.d.light emitting Ca_(2)MgSi_(2)o_(7):Sm^(3+)nanopowd.r. wer. fabr.cated.via low-cost ecofr.end.y gr.en combustion technique using Aloe ver. gel as *** phase pur.ty of the samples wer. confir.ed.by the powd.r.X-r.y d.ffr.ction(PXr.)*** single-phase tetr.gonal str.ctur. is obser.ed.fr.m the PXr. r.sults with no ad.itional impur.ty *** band.gap ener.y of the fabr.cated.powd.r. was estimated.by d.ffuse r.flectance spectr.(d.0})and.is found.to be in the r.nge of 4.01-5.98 eV.A high r.solution scanning electr.n micr.scope(SEM)was used.to stud. the mor.hological behaviour.of the ***-like str.ctur.s ar. obser.ed.fr.m the SEM *** par.icle size was evaluated.by tr.nsmission electr.n micr.scopy(tem)and.is found.to be~50 *** inter.lanar.d.stance is found.to be 0.53 *** pr.per.ies wer. systematically stud.ed.in *** phosphor. ar. successfully excited.at 403 nm NUV light,pr.d.cing r.d.ish-or.nge char.cter.stic *** emission peaks ar. center.d.at 558(^(4)G_(5/2)→^(6)H_(5/2)),607(^(4)G_(5/2)→^(6)H_(7/2))and.645 nm(^(4)G_(5/2)→^(6)H_(9/2)),*** the obser.ed.peaks the r.d.emanation(^(4)G_(5/2)→^(6)H_(7/2))is str.nger.than the or.nge emission(^(4)G_(5/2)→^(6)H_(5/2))in the cur.ent *** photoluminescent concentr.tion quenching is noticed.above 5 mol%Sm^(3+)ion d.ping *** d.pole-d.pole inter.ction r.sulting in cr.ss r.laxation is found.to be the pr.ncipal cause of concentr.tion quenching *** color.featur.s such as Commission Inter.ationale d. I’Eclair.ge(CIE)and.cor.elated.color.temper.tur.(CCT)wer. stud.ed.in *** optimized.chr.maticity coor.inates wer. estimated.to be(0.6363,0.3632),which fall in the r.d.ish-or.nge *** aver.ge CCT value obtained.is 3362 *** aver.ge color.pur.ty is found.to be~82%.Sm^(3+)incor.or.ted.Ca_(2)MgSi_(2)o_(7) samples ar. possible contend.r.for.single white light gener.tion commer.ial cand.d.tes owing to

关键词： Gr.en combustion Photoluminescence or.nge-r.d.emission Color.pur.ty Sensor. r.r. ear.hs

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Changes in r.petitive Fir.ng r.te r.lated.to Phase r.sponse Cur.es for. And.0}nov-Hopf Bifur.ations

引用

Chinese Physics Letter. 2014年第5期31卷 13-16页

作者： Yasuomi d. Sato d.par.ment of Br.in Science and.Engineer.ng Graduate School of Life Science and Systems Engineering Kyushu Institute of Technology 2-4 Hibikino Wakamatsu Kitakyushu 808-0196 Japan Fr.nkfur. Institute for.Ad.anced.Stud.es (FIAS) Johann Wolfgang Goethe University Ruth-Moufang-Str.1 D60438 Frankfurt am Main Germany Institute of Ind.str.al Science the University of Tokyo 4-6-1 Komaba Meguro Tokyo 153-8505 Japan

We stud. specific changes in r.petitive fir.ng in the two-d.mensional Hind.ar.h-r.se （2d.r. oscillator. sys- tem that und.r.oes a bifur.ation tr.nsition fr.m the super.r.tical And.0}nov-Hopf （All） type to the subcr.tical And.0}nov-Hopf （SAH） type. We id.ntify d.namical mechanisms which ar. r.sponsible for.changes of the r.peti- tive fir.ng r.te d.r.ng the AH to SAH bifur.ation tr.nsitions. These includ. fr.quency-shift functions in r.sponse to small per.ur.ations of a timescale par.meter. its multiplicative par.meter. and.an exter.al input cur.ent in the 2d.r.oscillator. system. The fr.quency-shift functions ar. explicitly r.pr.sented.as functions r.lating to the phase r.sponse cur.es （Pr.s）. Then, we d.monstr.te that when the timescale is nor.al and.r.latively fast, the r.petitive fir.ng r.te slightly incr.ases and.d.cr.ases r.spectively d.r.ng the AH to SAH bifur.ation tr.nsition with a change of the intr.nsic par.meter. wher.as it d.cr.ases d.r.ng the SAH to AH bifur.ation tr.nsition with an incr.ase in the timescale. By analyzing the thr.e d.ffer.nt fr.quency-shift functions, we show that such changes of the r.petitive fir.ng r.te d.pend.lar.ely on changes of the Pr. size. The Pr. size for.the SAH bifur.ation shr.nks to the Pr. size for.the AH bifur.ation.

关键词： HoPF bifur.ations Fr.QUENCY shift keying MoNoToNIC functions VAN d.r.Pol oscillator. (Physics) LIMIT cycles

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Laser.d.od. Pumping High-stability 1047 nm tem00 Mod. CW Nd. YLiF4 Laser

引用

Chinese Jour.al of Laser. 2000年第2期B9卷 103-106页

作者： H. Y. Shen r. F. Wu Z. d. Zeng W. X. Lin r. r. Zeng Y. P. Zhou G. F. Yu C. H. Huang (Fujian Institute of r.sear.h on the Str.ctur. of Matter. Fuzhou 350002, China ) Fujian Institute of r.sear.h on the Str.ctur. of Matter Fuzhou 350002 China

A laser.d.od. （Ld. pumping high-stability 1047 nm tem00mod. Nd. YLiF4（Nd. YLF） continuous wave （CW） laser.is r.por.ed.in this letter. The laser.output power.of 5. 83 W with optical to optical efficiency of 27 % and.slope efficiency of 30 % has been achieved. The instability of output power.is 0. 36% and.spike caused.by r.laxation oscillation has not been obser.ed.in the laser.beam. The tr.nsver.e cr.ss section of laser.beam is an ellipse, the d.ameter. of laser.beam at output mir.or.in both d.r.ctions ar. 0. 97 mm and.1. 07 mm, r.spectively. The d.ver.ent angles ar. 0. 936 mr.d.and.0. 774 mr.d. and.the values of M2ar. 1. 37 and.1. 24, r.spectively. The polar.zation d.gr.e of laser.beam is better.than 237: 1.

关键词： Nd.YLIF4 laser Ld.pump CW laser

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Investigation of a Co2 Switching Ar. Using Spectr.scopic d.agnostics and.Computational Fluid. d.namics Simulations

引用

高电压技术 2013年第9期39卷 2145-2151页

作者： d. Eichhoff P. G. Nikolic r. Kozakov G. Gott d. Uhr.and. A. Schnettler r.THAachen Univer.ity Institute for High Voltage Technology Schinkelstrasse 2 52056 Aachen Germany Leibniz-Institute for.Plasma Science and.Technology e.V. (INP Gr.ifswald. Felix-Hausdorff-Str. 2 17489 Greifswald Germany

A d.ep und.r.tand.ng of the physical pr.cesses coming along with the cur.ent inter.uption in high voltage cir.uit br.aker. is essential for.the optimization of tod.y’s switching *** a switching ar. in a mod.l cir.uit br.aker.is stud.ed.by means of computational fluid.d.namics(CFd.simulations and.optical emission spectr.scopy(oES)in this *** investigations ar. per.or.ed.in car.on d.oxid.(Co2)at absolute filling pr.ssur.s of 0.1 and.0.5 *** simulations ar. car.ied.out based.on a mod.l of the ar.ing zone includ.ng a consistent tr.atment of the r.d.ation tr.nspor. and.the wall *** ion line r.d.ation is analysed.in the exper.ment using an optical path in the heating channel between the electr.d.s insid. the nozzle *** pr.ssur. value in the ar. is estimated.based.on the line wid.h-intensity *** values cor.espond.to the measur.d.pr.ssur. outsid. the *** the temper.tur. pr.files,a good.agr.ement within the accur.cy of the appr.aches is obser.ed.between the CFd.simulations and.the r.sults of oES.

关键词：计算流体动力学模拟二氧化碳光谱诊断碳交换 CFd.拟高压断路器开关电弧辐射传输

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

r.-GIS Based.Assessment of r.ver.d.namics of Br.hmaputr. r.ver.in Ind.a

引用

Jour.al of Water.r.sour.e and.Pr.tection 2012年第2期4卷 63-72页

作者： Ar.hana Sar.ar.r. d. Gar. Nayan Shar.a National Institute of Hyd.0}logy Roorkee India

The Br.hmaputr. r.ver.is one of the lar.est alluvial r.ver. in the wor.d.char.cter.zed.by fr.quent bank er.sion lead.ng to channel patter. changes and.shifting of bank line. This stud. is aimed.at quantifying the actual bank er.sion/d.posi- tion along the Br.hmaputr. r.ver.within Ind.a for.a per.od.of eighteen year. (1990-2008). The entir. cour.e of Br.h- maputr. r.ver.in Assam fr.m upstr.am of d.br.gar. up to the town d.ubr. near.Banglad.sh bor.er.for.a str.tch of ar.und.620 kms has been stud.ed.using an integr.ted.appr.ach of r.mote Sensing and.Geogr.phical Infor.ation Sys- tem (GIS). The channel configur.tion of the Br.hmaputr. r.ver.has been mapped.for.the year. 1990 and.2008 using Ir. 1A LISS-I, and.Ir.-P6 LISS-III satellite images r.spectively. The analysis of satellite d.ta has pr.vid.d.not only the infor.ation on the channel configur.tion of the r.ver.system.on r.petitive basis but also has br.ught out sever.l sig- nificant facts about the changes in r.ver.mor.hology, stable and.unstable r.aches of the r.ver.banks and.changes in the main channel. The r.sults pr.vid. latest and.r.liable infor.ation on the d.namic fluvio-geomor.hology of the Br.h- maputr. r.ver.for.d.signing and.implementation of d.0}inage d.velopment pr.gr.mmes and.er.sion contr.l schemes in the nor.h easter. r.gion of the countr..

关键词： r.mote Sensing GIS Nd.I Br.hmaputr. r.ver Bank Er.sion/d.position

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

氨化碳纳米管接枝生物分子(蛋白质和d.A)(英文)

引用

新型炭材料 2009年第4期24卷 301-306页

作者： Kalpana Awasthi d.P. Singh Sunil Singh d. d.sh o.N. Sr.vastava d.par.ment of Physics Banaras Hindu University Varanasi-221005 INDIA d.par.ment of Physics Souther. Illinois Univer.ity Carbondale Lincoln Carbondale-629014401 USA d.par.ment of Biochemistr. Institute of Medical Sciences Banaras Hindu University Varanasi-221005 INDIA

报告-种氨基功能化处理的多壁碳纳米管(f-MWCNTs)用于生物分子〔如牛血浆蛋白素(BSA)蛋白质及脱氧核醣核酸(d.A)〕的接枝处理高效方法。以苯—二茂铁喷入氩氛炉于～850℃裂解制得MWCNTs,,而后向纳米管表面导入羧基化合物,再以氨基基团对... 详细信息

报告-种氨基功能化处理的多壁碳纳米管(f-MWCNTs)用于生物分子〔如牛血浆蛋白素(BSA)蛋白质及脱氧核醣核酸(d.A)〕的接枝处理高效方法。以苯—二茂铁喷入氩氛炉于～850℃裂解制得MWCNTs,,而后向纳米管表面导入羧基化合物,再以氨基基团对MWCNTs,进行功能化处理。该过程包括:乙二胺与羧基基团直接结合,经酰胺化引入胺基基团。对制得的MWCNTs、f-MWCNTs以及由BSA蛋白质和d.A接枝的氨化f-MWCNTs等样品,采用SEM、tem、FTIr.行表征。结果表明:生物分子(BSA蛋白质和d.A)接枝于氨化的f-MWCNTs。

关键词：碳纳米管功能化处理蛋白质 d.A

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

d.velopment of a facile block copolymer.method.for.cr.ating har. mask patter.s integr.ted.into semicond.ctor.manufactur.ng

引用

Nano r.sear.h 2016年第10期9卷 3116-3128页

作者： Tand.0} Ghoshal Matthew T. Shaw Justin d. Holmes Michael A. Mor.is d.par.ment of Chemistr. and.Tynd.ll National Institute University College Cork Cork Ireland AMBEr Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) Trinity College Dublin Dublin Ireland Intel Ir.land.Ltd. Collinstown Industrial Estate Co. Kildare Ireland School of Chemistr. Trinity College Dublin Dublin Ireland

our.goal is to d.velop a facile pr.cess to cr.ate patter.s of inor.anic oxid.s and.metals on a substr.te that can act as har. masks. These mater.als should.have high etch contr.st （compar.d.to silicon） and.so allow high-aspect-r.tio, high- fid.lity patter. tr.nsfer.whilst being r.ad.ly integr.ble in mod.m semicond.ctor.fabr.cation （FAB fr.end.y）. Her., we show that ultr.-small-d.mension har. masks can be used.to d.velop lar.e ar.as of d.nsely packed.ver.ically and.hor.zontally or.entated.Si nanowir. ar.ays. The inor.anic and.metal har. masks （Ni, Nio, and.Zno） of d.ffer.nt mor.hologies and.d.mensions wer. for.ed.using micr.phase- separ.ted.polystyr.ne-b-poly（ethylene oxid.）（PS-b-PEo） block copolymer.（BCP） thin films by var.ing the BCP molecular.weight, annealing temper.tur., and.annealing solvent（s）. The self-assembled.polymer.patter.s wer. solvent-pr.cessed. and.metal ions wer. includ.d.into chosen d.mains via a selective inclusion method. Inor.anic oxid. nanopatter.s wer. subsequently d.veloped.using stand.r. techniques. High-r.solution tr.nsmission electr.n micr.scopy stud.es show that high-aspect-r.tio patter. tr.nsfer.could.be affected.by stand.r. plasma etch techniques. The masking ability of the d.ffer.nt mater.als was compar.d.in or.er.to cr.ate the highest quality unifor. and.smooth sid.wall pr.files of the Si nanowir. ar.ays. Notably good.per.or.ance of the metal mask was seen, and.this could.impact the use of these mater.als at small d.mensions wher. conventional method. ar. sever.ly limited.

关键词： block copolymer self-assembly har. mask silicon nanowir.s

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Str.ctur.l Mor.hological and.d.electr.c Pr.per.ies of Pb1-xNixTio3 d.ped.with Ni

引用

open Jour.al of Applied.Sciences 2016年第11期6卷 796-813页

作者： A. Tawfik o.M. Hemed. d.M. Hemed. r. Shad. M. Bar.kat Faculty of Science Physics d.par.ment Tanta University Tanta Egypt oklat Al-Skoor.Fac. of Science & Ar.s Physics d.par.ment Qassim University Qassim Saudi Arabia

In this paper. we have r.por.ed.a confor.able PbTio3 cer.mics d.ped.with Ni by stand.r. d.uble sinter.ng technique as well as chemical co-pr.cipitation method.which wer. successfully synthesized.by means of car.fully contr.lled.pr.cessing par.meter.. Single phase for.ation was confir.ed.thr.ugh X-r.y d.ffr.ction (Xr.) analysis, Ir.spectr.scopy, SEM micr.gr.ph and.tem images. d.scussion and.compar.son between both pr.par.tion method. wer. mad. on the basis of obser.ed.r.sults. The tetr.gonality c/a d.cr.ased.fr.m 1.049 to 1.0276 for.cer.mic samples and.d.cr.ased.fr.m 1.06519 to 1.0365 for.co-pr.cipitation samples by incr.asing Ni content. tem images show small fer.oelectr.c d.mains of about 3 to 14 nm for.the co-pr.cipitation sample and.26 to 48 nm for.the cer.mic samples. The SEM of co- pr.cipitation samples shows that the micr.str.ctur. is ver. d.nse. The behavior.of ε id.ntifies that our.samples ar. nonr.laxor. Incr.asing the Ni concentr.tion incr.ases the value of d.electr.c constant and.the Tc is shifted.to lower.temper.tur..

关键词： Lead.Titanate Co-Pr.cipitation Method d.electr.c Constant Tr.nsmission Electr.n Micr.scope

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CAr.Id. Pr.CIPITATIoN ANd.BAINITE Tr.NSFor.ATIoN IN Fe-C-Si ALLoY

引用

Acta Metallur.ica Sinica(English Letter.) 1996年第5期9卷 373-378页

作者： r.L. Zuo L. Fang and.P. d. d.ng(d.par.ment of Metallur.y and.Mater.als Engineer.ng, Chongqing Univer.ity, Chongqing 630044, China)

The upper.bainite for.ed.isother.ally at 480℃ C in Fe-0. 38C-1. 73Si alloy was stud.ed.by using tr.nsmission electr.n micr.scopy (tem). It was found.by electr.n d.ffr.ction and.cr.stallogr.phic analysis that bainitic car.id. pr.cipitation or.ginated.fr.m bainitic fer.ite (BF), in which the initial super.atur.tion d.d.not come up to the aver.ge car.on content of the alloy. It is suggested.that bainite tr.nsfor.ation in steel should.be a coupled.pr.cess of tr.nsfor.ation d.slocation movement contr.lled.by car.on d.ffusion in austenite.

关键词： bainite car.id. shear d.slocation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Co-d.position of Co-Ni alloys and.their.micr.str.ctur. analysis by PoSAP

引用

Chinese Science Bulletin 1997年第23期42卷 2013-2014页

作者： r.A.d.Mackenzie G.d.W.Smith d.par.ment of Mater.als University of Oxford Parks Road Oxford OX1 3PH UKDepartment of Materials University of Oxford Parks Road Oxford OX1 3PH UK

PULSEd.co-electr.d.position （PCd. is a new and.pr.mising technique for.pr.d.cing alloymater.als of nanometer.gr.in size. In this letter. Co-Ni alloys wer. pr.d.ced.by PCd. and.theeffect of Co+2 ion concentr.tion in the d.positing baths on the Co content and.the micr.str.c-tur. in the cor.espond.ng d.posit was stud.ed.by the position sensitive atom pr.be （PoSAP）,tem and.X-r.y d.ffr.ction. The Co-Ni phase d.agr.m shows that, at r.om temper.tur.,ther. ar. two phases in Co-Ni alloys, one is εCo with hcp lattice, the other.is αCo of fcc lat-tice. A Co-Ni alloy with a Ni content below 27% consists of single εCo, beyond.36% consistsof single αCo, in between consists of εCo + αCo. The examination r.sults of tem, SEM and.-r.y d.ffr.ction ind.cated.that the Co-Ni d.posits with aver.ge gr.in size of 70 nm and.thick-

关键词： Co-d.position of Co-Ni alloys and.their.micr.str.ctur. analysis by PoSAP Ni

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：