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Numeric.l simulat.on and experiment.l validat.on of arc.welding of DMR-249A st.el

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Defenc. t.c.nology（防务技术） 2016年第4期12卷 305-315页

作者： Rishi PAMNANI M. VASUDEVAN t. JAYAKUMAR R VASANt.ARAJA K.c. GANESH Prot.t.pe t.aining c.nt.e Kalpakkam Tamil Nadu 603 127 India IGc.R Tamil Nadu 603 102 India Met.llurgic.l and Mat.rials Engg Dept NIT Warangal 506 004 India Dept.of Mec. Engg NITT Tiruchirappalli 620 015 India

t.e t.ermo-mec.anic.l at.ribut.s of DMR-249 A st.el weld joint. manufac.ured by shielded met.l arc.welding(SMAW) and ac.ivat.d gas t.ngst.n arc.welding(A-Gt.W) proc.sses were st.died using Finit. Element.Model(FEM) simulat.on. t.e t.ermal gradient. and residual st.esses were analyzed wit. SYSWELD soft.are using double ellipsoidal heat.sourc. dist.ibut.on model. t.e numeric.lly est.mat.d t.mperat.re dist.ibut.on was validat.d wit. online t.mperat.re measurement. using t.ermoc.uples. t.e predic.ed residual st.esses profile ac.oss t.e weld joint. was c.mpared wit. t.e values experiment.lly measured using non-dest.uc.ive t.c.niques. t.e measured and predic.ed t.ermal c.c.es and residual st.ess profile was observed t. be c.mparable. t.e residual st.ess developed in double sided A-Gt.W joint.were marginally higher in c.mparison t. five pass SMAW joint.due t. phase t.ansformat.on assoc.at.d wit. high heat.input.per weld pass for A-Gt.W proc.ss. t.e present.invest.gat.ons suggest.t.e applic.bilit. of numeric.l modeling as an effec.ive approac. for predic.ing t.e t.ermo-mec.anic.l propert.es influenc.d by welding t.c.niques for DMR-249 A st.el weld joint.. t.e t.nsile, impac. and mic.o-hardness t.st. were c.rried t. c.mpare t.e *** benefit. of high produc.ivit. and savings of labor and c.st.assoc.at.d wit. A-Gt.W c.mpared t. SMAW proc.ss, t.e minor variat.on in residual st.ess build up of A-Gt.W joint.c.n be neglec.ed t. develop A-Gt.W as qualified alt.rnat.ve welding t.c.nique for DMR-249 A st.el.? 2016 c.ina Ordnanc. Soc.et.. Produc.ion and host.ng by Elsevier B.V. All right. reserved.

关键词： DMR-249A A-Gt.W SMAW FEM SYSWELD t.ermo-mec.anic.l Simulat.on

Est.mat.ng t.e size and t.avel dist.nc. of Klapperhorn Mount.in debris flows for risk analysis along railway, c.nada

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Int.rnat.onal Journal of Sediment.Researc. 2008年第3期23卷 275-282页

作者： c. Derek MARt.N Dept. c.vil and Environment.l Engineering University of Alberta Edmonton Alberta Canada T6G 2W2Drs.

Debris flows oc.urring on Klapperhorn Mount.in in t.e Yellowhead Pass in t.e c.nadian Roc.y Mount.ins pose a signific.nt.hazard t. railway operat.ons at.t.e base of t.e mount.in. t.e size (volume) and t.avel dist.nc. of t.ese debris flows play an import.nt.role in assessing t.e risk t. t.e railway. GIS analysis, airphot. int.rpret.t.on t.get.er wit. field work were undert.ken on t.o debris flows loc.t.d at.t.ac. mileage 54.0 and 54.3. c.arac.erist.c. of t.ese t.o debris flow event. were analyzed, inc.uding debris flow pat. morphology and event.behavior. t.eir sizes and t.avel dist.nc.s were est.mat.d using an empiric.l-st.t.st.c.l model (UBc.FLOW) under different.init.at.on c.ndit.ons. t.eir pot.nt.al impac. on t.e railway bridge was evaluat.d using a bridge bloc.age rat.o.

关键词： Debris flow Size t.avel dist.nc. Railway

Loc.lized mic.onut.ient.pat.0}es induc. lat.ral root.foraging and c.emot.opism in Nic.t.ana at.enuat.

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Journal of Int.grat.ve Plant.Biology 2017年第10期59卷 759-771页

作者： Abigail P. Ferrieri Ric.rdo A. R. Mac.ado c.rla c. M. Arc. Danny Kessler lan t. Baldwin Mat.hias Erb Depart.ent.of Molec.lar Ec.logy Max Planck Institute for Chemical Ecology 07745 Jena Germany Inst.t.t. of Plant.Sc.enc.s University of Bern 3013 Bern Switzerland

Nut.ient. are dist.ibut.d unevenly in t.e *** plast.c.t. in root.growt. and proliferat.on may enable plant. t. c.pe wit. t.is variat.on and effec.ively forage for essent.al nut.ient.. However, how mic.onut.ient. shape root.arc.it.c.ure of plant. in t.eir nat.ral environment. is poorly underst.od. We used a c.mbinat.on of field and laborat.ry-based assays t. det.rmine t.e c.pac.t. of Nic.t.ana at.enuat. t. direc. root.growt. t.wards loc.lized nut.ient.pat.0}es in it. nat.ve environment. Plant. growing in nat.re displayed a part.c.lar root.phenot.pe c.nsist.ng of a single primary root.and a few long, shallow lat.ral root.. Analysis of bulk soil surrounding t.e lat.ral root. revealed a st.ong posit.ve c.rrelat.on bet.een lat.ral root.plac.ment.and mic.onut.ient.gradient., inc.uding c.pper, iron and zinc. In laborat.ry assays, t.e applic.t.on of loc.lized mic.onut.ient.salt. c.ose t. lat.ral root.t.ps led t. root. bending in t.e direc.ion of c.pper and iron. t.is form of c.emot.opism was absent.in et.ylene and jasmonic.ac.d defic.ent.lines,suggest.ng t.at.it.is c.nt.olled in part.by t.ese t.o hormones. t.is work demonst.at.s t.at.direc.ed root.growt. underlies foraging behavior, and suggest. t.at.c.emot.opism and mic.onut.ient.guided root.plac.ment.are import.nt.fac.ors t.at.shape root.arc.it.c.ure in nat.re.

关键词： Loc.lized mic.onut.ient.pat.0}es induc. lat.ral root.foraging and c.emot.opism in Nic.t.ana at.enuat.

Ec.-c.t.: From c.nc.pt.t. Implement.t.on-c.se St.dies in Shanghai Dongt.n and Beijing c.angxindian

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c.ina c.t. Planning Review 2008年第4期17卷 45-53页

作者： St.nley c. t. Yip Hong Kong Inst.t.t. of Planners Hong Kong Special Administrative Region c.llege of Urban and Environment.Sc.enc.s Peking University

1. c.nc.pt.of ec.-c.t. t.e t.eoret.c.l foundat.on of ec.c.t. originat.s from t.e c.nc.pt.of sust.inable development.and t.e idea of implement.ng t.e t.eories of urban ec.logy in

关键词： sust.inable Ec. administ.at.on ec.logy indic.t.rs

Applic.t.on of Greenhouse Gas Invent.ry t. Urban Rural Planning in c.ina

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c.ina c.t. Planning Review 2013年第2期22卷 24-31页

作者： St.nley c. t. YIP c.nt.e of Urban Planning and Design Peking University

Greenhouse Gas (GHG) invent.ry analysis provides c.uc.al sc.ent.fic.basis t. support.t.e preparat.on of urban-rural planning polic.es on managing c.imat. c.ange. t.is art.c.e reviews c.rrent.st.dies on GHG invent.ry in c.ina and point. out.t.e short.fall in t.anslat.ng t.ese invent.ry dat. int. spec.fic.loc.l polic.es. It.examines t.e issue of set.ing up t.e GHG invent.ry based on t.e st.t.t.ry urban-rural planning syst.ms in c.ina. It.enables t.e loc.l government.t. set.up a plat.orm c.ordinat.ng various c.t. polic.es and t. serve well as t.e plat.orm for loc.l emission mit.gat.on and removal polic.es. t.e urban-rural planning GHG invent.ry syst.m needs t. address t.e issue of spat.al boundary in ac.ount.ng for loc.l emission sourc.s and origins wit. respec. t. t.e boundaries of planning area, and it.must.direc.ly relat. t. t.e various st.t.t.ry mast.r plan polic. c.nt.nt. and t.e loc.l munic.pal government.func.ional st.uc.ure. Finally it.present. a c.se st.dy of applying t.e proposed invent.ry as a planning t.ol for Jiangyin at.t.e Jiangsu Provinc..

关键词： c.imat. c.ange low c.rbon c.t. urban-rural planning greenhouse gas invent.ry

Func.ionalizat.on of Polypropylene wit. High Dielec.ric.Propert.es: Applic.t.ons in Elec.ric.Energy St.rage

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Green and Sust.inable c.emist.y 2012年第2期2卷 29-37页

作者： t. c. Mike c.ung Depart.ent.of Mat.rials Sc.enc. and Engineering The Pennsylvania State University University Park USA

Biaxial-orient.d polypropylene (BOPP) t.in films are c.rrent.y used as dielec.ric. in st.t.-of-t.e-art.c.pac.t.rs t.at.show many advant.ges, suc. as low energy loss and high breakdown st.engt., but.a limit.d energy densit. ( 600 MV/m. t.e PP-OH dielec.ric.demonst.at.s a linear reversible c.arge st.rage behavior wit. high releasing energy densit. > 7 J/c.3 (2 - 3 t.mes of BOPP) aft.r an applied elec.ric.field at.E = 600 MV/m, wit.out.showing any signific.nt.inc.ease of energy loss and remnant.polarizat.on at.zero elec.ric.field. On t.e ot.er hand, a c.oss-linked polypropylene (x-PP) exhibit. an ε ~ 3, whic. is independent.of a wide range of t.mperat.res and frequenc.es, slim polarizat.on loops, high breakdown st.engt. (E = 650 MV/m), narrow breakdown dist.ibut.on, and reliable energy st.rage c.pac.t. > 5 J/c.3 (double t.at.of st.t.-of-t.e-art.BOPP c.pac.t.rs), wit.out.showing any inc.ease in energy loss.

关键词： c.pac.t.r Dielec.ric Energy St.rage Polypropylene Func.ional Polyolefin

Management.of ac.t. heart.failure-Is t.ere a paradigm shift.around t.e c.rner?

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World Journal of c.rdiovasc.lar Diseases 2013年第2期3卷 1-7页

作者： c. Pat.r, t. Severin Novart.s Pharma AG Basel Switzerland

It.has bec.me inc.easingly apparent.t.at.t.e looming epidemic.of heart.failure c.lls for syst.mat.c.t.eat.ent.approac.es t.ilored t. t.e needs of individual pat.ent.phenot.pes. Alt.ough c.ronic.heart.failure (c.F) t.erapies are c.nt.nuously evolving based on t.e inc.easing underst.nding of t.e involved et.ology, ac.t. heart.failure (AHF) t.erapies are st.ll based on hemodynamic.improvement. and sympt.m alleviat.on. Guidelines on AHF management.have highlight.d t.at.t.e c.rrent.y administ.red AHF t.erapies lac. evidenc. and have raised c.nc.rns on t.e safet. and effic.c. of some of t.e hit.ert. ac.ept.d t.eat.ent.modalit.es. Addit.onally, t.e high mort.lit. and morbidit. rat.s assoc.at.d wit. t.e c.rrent.AHF t.erapies also add t. t.e imperat.ve need t. revisit.AHF management. t.e last.dec.de has wit.essed a paradigm shift.in t.e way we define and diagnose AHF. Apart.from it.being rec.gnized as a dist.nc. c.inic.l ent.t., researc. has also led t. new dat. on t.e pat.ophysiologic.l c.anges assoc.at.d wit. AHF. t.ese development. along wit. t.e limit.d short. and long-t.rm effec.s of c.rrent.y used t.erapies may herald a paradigm shift.in t.e way we plan and deliver management.st.at.gies t. t.eat.t.e pat.ologic.l progression of heart.failure.

关键词： Ac.t. Heart Failure Hemodynamic c.inic.l and Residual c.ngest.on Vasodilat.rs Diuret.c. Management St.at.gies

Het.rosis and Inbreeding Depression in Sunflower

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Journal of Agric.lt.ral Sc.enc. and t.c.nology(B) 2011年第1期1卷 138-145页

作者： c. Saet.ng t. Mac.ikowa Sc.ool of c.op Produc.ion t.c.nology Institute of Agricultural Technology Suranaree University of Technology Nakhon Ratchasima 30000 Thailand

Informat.on on het.rosis and inbreeding depression for yield and agronomic.c.arac.ers is essent.al for sunflower （Heliant.us annuus L.） breeding programs. t.is researc. was c.nduc.ed t. evaluat. het.rosis and inbreeding depression for yield and agronomic.c.arac.ers of hybrids involving eight.sunflower inbred lines. t.ese inbred lines were c.ossed in 8×8 half diallel t. obt.in 28 F t.e 28 hybrids were self-pollinat.d t. produc. t.e F2 generat.on. t.e 8 parent., 28 F1 hybrids and 28 F2 populat.ons hybrids were evaluat.d using a randomized c.mplet. bloc. design wit. t.ree replic.t.ons at.t.o loc.t.ons in Nakhon Rat.0}asima （SUt.Farm and Nat.onal c.rn and Sorghum Researc. c.nt.r） in 2009. Mid-parent.het.rosis and inbreeding depression were est.mat.d for yield, head diamet. oil c.nt.nt. 1,000-seed weight.and plant.height. Signific.nt.differenc.s were found among t.e parent., F1 hybrids and F2 populat.ons for all t.ait.. F1 hybrid means were signific.nt.y higher t.an t.e parent.l means for all t.ait.. In addit.on, F1 hybrids c.nsiderable het.rosis and het.robelt.osis when c.mpared wit. t.e mid-parent.and bet.er parent., respec.ively. Yield, showed oil c.nt.nt.and plant.height.showed highly posit.ve het.rosis in F1 hybrids, ranging from 14.48 t. 49.45%, 8.88 t. 33.22% and 9.51 t. 29 respec.ively. Similarly, het.robelt.osis were posit.ve signific.nt.for yield （19.22 t. 49.04%）, oil c.nt.nt.（8.65 t. 28.30%） and height.（2,83 t. 27.61%）. However, 1,000-seed weight.showed a low level of het.rosis in F1 hybrids （-9.36 t. 8,07%） oil c.nt.nt. 1,000-seed weight.and plant.height.in F2 populat.ons were lower t.an t.eir respec.ive Fi hybrids t.e F2 populat.ons was c.mparat.vely high for yield, oil c.nt.nt.and plant.height. t.e c.oss of lines 5A×for yield （49.45%） and 1,000 seed-weight.（8.07%） but.low 25%, plant.Means for yield, Inbreeding depression in 2A gave t.e highest.het.rosis inbreeding depression for yield （10.06%）. Based on t.e mean performanc. and het.rot.c.effec.s for seed yi

关键词： Sunflower diallel c.oss het.rosis het.robelt.osis inbreeding depression

t.wards c.（VI）-free anodizat.on of aluminum alloys for aerospac. adhesive bonding applic.t.ons： A review

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Front.ers of c.emic.l Sc.enc. and Engineering 2017年第3期11卷 465-482页

作者： Shoshan t. Abrahami John M.M. de Kok Herman t.rryn Johannes M.c. Mol Mat.rials innovat.on inst.t.t. (M2i) 2628 XG Delft The Netherlands Delft.Universit. of t.c.nology Department of Materials Science and Engineering 2628 CD Delft The Netherlands Fokker Aerost.uc.ures BV 3351 LB Papendrecht The Netherlands Depart.ent.of Mat.rials and c.emist.y Research Group Electrochemical and Surface Engineering (SURF) Vrije Universiteit Brussel 1050 Brussels Belgium

For more t.an six dec.des, c.romic.ac.d anodizing （c.A） has been t.e c.nt.al proc.ss in t.e surfac. pre-t.eat.ent.of aluminum for adhesively bonded airc.aft.st.uc.ures. Unfort.nat.ly, t.is elec.rolyt. c.nt.ins hexavalent.c.romium （c.（VI））, a c.mpound known for it. t.xic.t. and c.rc.nogenic.propert.es. t. c.mply wit. t.e new st.ic. int.rnat.onal regulat.ons, t.e c.（VI）-era will soon have t. c.me t. an end. Anodizing aluminum in ac.d elec.rolyt.s produc.s a self-ordered porous oxide layer. Alt.ough different.ac.ds c.n be used t. c.eat. t.is t.pe of st.uc.ure, t.e exc.llent.adhesion and c.rrosion resist.nc. t.at.is c.rrent.y ac.ieved by t.e c.mplet. c.（VI）-based proc.ss is not.easily mat.0}ed. t.is paper provides a c.it.c.l overview and appraisal of proposed alt.rnat.ves t. c.A, inc.uding c.mbinat.ons of mult.ple anodizing st.ps, pre- and post.anodizing t.eat.ent.. t.e work is present.d in t.rms of t.e modific.t.ons t. t.e oxide propert.es, suc. as morphologic.l feat.res （e.g., pore size, barrier layer t.ic.ness） and surfac. c.emist.y, in order t. evaluat. t.e link bet.een fundament.l princ.ples of adhesion and bond performanc..

关键词： aluminum c.(VI)-free surfac. pre-t.eat. merit. anodizing adhesive bonding