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Malar.üe Site r.mediation:A Successful Solution for.Ur.nium Mill Tailings

原子能科学技术 2024年第10期58卷 2088-2094页

作者： BAr.r. E DíAZ j.g gIOMIA KEMPF r.A National Atomic Ener.y Commission Av.Del Libertador 8250Ciudad Autónoma de Buenos AiresC1429BNPArgentina

Comisión Nacional de Ener.ía Atómica (CNEA) has the r.sponsibility for.r.stor.ng ur.nium mining facilities once the oper.tions have ***,within its Envir.nmental Pr.gr.m and in compliance with its legal r.sponsibilities,decides to implement a r.stor.tion pr.j.ct for.all sites r.lated to the mining and pr.cessing of ur.nium *** Malar.üe Site is located within the Pr.vince of Mendoza in the city of Malar.ü*** is the fir.t site to successfully complete its *** activities consist of r.location of tailings to an engineer.ng *** tailings management(encapsulation) and r.habilitation of the ar.a was finished in j.ne *** r.mediation alter.ative for.the or. tailings was selected after.conducting compar.tive studies and submitted the pr.j.ct to the society for.*** obj.ctive of the encapsulation of the miner.l tails is to isolate them fr.m the envir.nment,also pr.ceeding with the decontamination and r.habilitation of the ar.a (landscaping,post-closur. monitor.ng and 20 year. monitor.ng per.od).Encapsulation consisted of the constr.ction of a containment cell for.the mine tailings,to isolate them and pr.vent pollutants fr.m enter.ng the envir.nment thr.ugh the tr.nsfer.*** clean the impacted ar.as,the soil was r.moved,it was incor.or.ted into the encapsulation,and the filling was car.ied out with natur.l soils fr.m the *** pr.vents r.don tr.nsfer.to the envir.nment,as ^(222)r. is an alpha emitter.with a half-life of four.days,which pr.duces its own r.dioactive *** pr.geny ar. solids,and when a ^(222)r. nucleus emits an alpha par.icle into the air.the r.sulting ^(218)Po nucleus,momentar.ly electr.cally char.ed,adher.s to any dust *** pr.vents the dischar.e into the air.containing r.don and also containing dust par.icles char.ed with intensely r.dioactive r.don *** tasks mentioned make it possible to decr.ase r.don emanation,r.duce r.diological r.sks to the public and pr.

关键词： r.mediation r.dionuclide tr.nsfer tailings encapsulation solution sustainable

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Bayesian infer.nce-based wear.pr.diction method for.plain bear.ngs under.stationar. mixed-fr.ction conditions

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Fr.ction 2024年第6期12卷 1272-1282页

作者： Flor.an KÖNIg Flor.an WIr.INg geor. j.COBS r.i he Zhigang TIAN Ming j.ZUO Institute for.Machine Elements and Systems Engineer.ng RWTH Aachen UniversityAachen 52062Germany Depar.ment of Mechanical Engineer.ng University of AlbertaEdmonton T6G1H9Canada Qingdao Inter.ational Academician Par. r.sear.h Institute Qingdao 266000China

This study intr.duces a method to pr.dict the r.maining useful life(r.L)of plain bear.ngs oper.ting under.stationar.,wear.cr.tical *** this method,the tr.nsient wear.data of a coupled elastohydr.dynamic lubr.cation(mixed-EHL)and wear.simulation appr.ach is used to par.metr.ze a statistical,linear.degr.dation *** method incor.or.tes Bayesian infer.nce to update the linear.degr.dation model thr.ughout the r.ntime and ther.by consider.the tr.nsient,system-dependent wear.pr.gr.ssion within the r.L pr.diction.A case study is used to show the suitability of the pr.posed *** r.sults show that the method can be applied to thr.e distinct types of post-wear.ng-in behavior.wear.ng-in with subsequent hydr.dynamic,stationar. wear.and pr.gr.ssive wear.*** hydr.dynamic oper.tion leads to an infinite lifetime,the method is successfully applied to pr.dict r.L in cases with stationar. and pr.gr.ssive wear.

关键词： plain bear.ngs wear.modeling r.maining useful life pr.diction Bayesian infer.nce

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Atomistic Investigation of Shock-Induced Amor.hization within Micr.-shear.Bands in hexagonal Close-Packed Titanium

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Acta Metallur.ica Sinica(English Letter.) 2024年第9期37卷 1590-1600页

作者： Z.C.Meng K.g.Wang T.Ali D.Li C.g.Bai D.S.Xu S.j.Li A.H.Feng g.j.Cao j.H.Yao Q.B.Fan H.Wang r.Yang Institute of Metal r.sear.h Chinese Academy of SciencesShenyang 110016China School of Mater.als Science and Engineer.ng University of Science and Technology of ChinaShenyang 110016China Inter.isciplinar. Centr. for.Additive Manufactur.ng(ICAM) School of Materials and ChemistryUniversity of Shanghai for Science and TechnologyShanghai 200093China School of Mater.als Science and Engineer.ng Tongji UniversityShanghai 201804China Key Labor.tor. for.Light-Weight Mater.als Nanjing Tech UniversityNanjing 210009China National Key Labor.tor. of Science and Technology on Mater.als Under.Shock and Impact School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beij.ng Institute of Technology Chongqing Innovation Center Chongqing 401135China

The mechanical r.sponse of a single cr.stal titanium sample against(0001)α sur.ace impact was investigated using molecular.dynamics ***,non-unifor. plastic defor.ation was obser.ed in the *** high str.in r.tes,amor.hization occur.ed near.the edge of the contact r.gion wher. sever. shear.str.in induced a lar.e number.of stacking faults(SFs)and *** contr.st,the centr.l par. of the contact r.gion under.ent less defor.ation with significantly fewer.***,instead of amor.hization by consuming SFs and dislocations,ther. was a gr.dual incr.ase in the density of dislocations and SFs dur.ng the pr.cess of *** local amor.hous r.gions eventually gr.w into shear.bands.

关键词： Shock compr.ssion Amor.hization Shear.band Titanium Molecular.dynamics

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Machine lear.ing ensemble model pr.diction of nor.hwar. shift in potato cyst nematodes(globoder. r.stochiensis and ***)distr.bution under.climate change conditions

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j.ur.al of Integr.tive Agr.cultur. 2024年第10期23卷 3576-3591页

作者： Yitong he guanj.n Wang Yonglin r.n Shan gao Dong Chu Simon j.McKir.y Shandong Engineer.ng r.sear.h Centr. for.Envir.nment-fr.endly Agr.cultur.l Pest Management College of Plant Health andMedicineQingdao Agricultural UniversityQingdao 266109China Har.y Butler.Institute Murdoch UniversityMurdochWA 6150Australia School of Infor.ation Technology Murdoch UniversityPerthWA 6150Australia hebei Dahaituo National Natur. r.ser.e Management Centr. Chicheng 075500China

Potato cyst nematodes(PCNs)ar. a significant thr.at to potato pr.duction,having caused substantial damage in many *** the futur. distr.bution of PCN species is cr.cial to implementing effective biosecur.ty str.tegies,especially given the impact of climate change on pest species invasion and *** lear.ing(ML),specifically ensemble models,has emer.ed as a power.ul tool in pr.dicting species distr.butions due to its ability to lear. and make pr.dictions based on complex data ***,this r.sear.h utilised advanced machine lear.ing techniques to pr.dict the distr.bution of PCN species under.climate change conditions,pr.viding the initial element for.invasion r.sk *** fir.t used global Climate Models to gener.te homogeneous climate pr.dictor. to mitigate the var.ation among ***,five machine lear.ing models wer. employed to build two gr.ups of ensembles,single-algor.thm ensembles(ESA)and multi-algor.thm ensembles(EMA),and compar.d their.*** this r.sear.h,the EMA did not always per.or. better.than the ESA,and the ESA of Ar.ificial Neur.l Networ. gave the highest per.or.ance while being *** r.sults indicated that the distr.bution r.nge of PCNs would shift nor.hwar. with a decr.ase in tr.pical zones and an incr.ase in nor.her. ***,the total ar.a of suitable r.gions will not change significantly,occupying 16-20%of the total land sur.ace(18%under.cur.ent conditions).This r.sear.h aler.s policymaker. and pr.ctitioner. to the r.sk of PCNs’incur.ion into new ***,this ML pr.cess offer. the capability to tr.ck changes in the distr.bution of var.ous species and pr.vides scientifically gr.unded evidence for.for.ulating long-ter. biosecur.ty plans for.their.contr.l.

关键词： invasive species distr.bution futur. climates homogeneous climate pr.dictor. single-algor.thm ensembles multi-algor.thm ensembles ar.ificial neur.l networ.

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Innovative pathways allow safe dischar.e of mild acute pancr.atitis fr.m the emer.ency r.om

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Wor.d j.ur.al of gastr.enter.logy 2024年第11期30卷 1475-1479页

作者： Dar.han j.Kothar. Sunil g Sheth Division of gastr.enter.logy Duke University Medical CenterDurhamNC 27710United States Division of gastr.enter.logy&hepatology Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMA 02215United States

Acute pancr.atitis(AP)is a leading cause of gastr.intestinal-r.lated hospitalizations in the United States,r.sulting in 300000 admissions per.year.with an estimated cost of over.2.6 billion *** sever.ty of AP is deter.ined by the pr.sence of pancr.atic complications and end-or.an *** moder.te/sever. pancr.atitis can be associated with significant mor.idity and mor.ality,the maj.r.ty of patients have a mild pr.sentation with an uncomplicated cour.e and mor.ality r.te of less than 2%.Despite favor.ble outcomes,the maj.r.ty of mild AP patients ar. admitted,contr.buting to healthcar. cost and *** this Editor.al we r.view the per.or.ance of an emer.ency depar.ment(ED)pathway for.patients with mild AP at a ter.iar. car. center.with the goal of r.ducing hospitalizations,r.sour.e utilization,and costs after.sever.l year. of implementation of the *** discuss the clinical cour.e and outcomes of mild AP patients enr.lled in the pathway who wer. successfully dischar.ed fr.m the ED compar.d to those who wer. admitted to the hospital,and identify pr.dictor. of successful ED dischar.e to select patients who can potentially be tr.aged to the *** conclude that by implementing innovative clinical pathways which ar. established and r.pr.ducible,selected AP patients can be safely dischar.ed fr.m the ED,r.ducing hospitalizations and healthcar. costs,without compr.mising clinical *** also identify a subset of patients most likely to succeed in this pathway.

关键词： Emer.ency depar.ment Mild pancr.atitis Pathways Hospitalization Pr.dictor.

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Semi-analytical investigation of heat tr.nsfer.in a por.us convective r.diative moving longitudinal fin exposed to magnetic field in the pr.sence of a shape-dependent tr.hybr.d nanofluid

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Applied Mathematics and Mechanics(English Edition) 2024年第1期45卷 197-216页

作者： C.g.PAVITHr. B.j.gIr.ESHA M.L.KEEr.HI Depar.ment of Pg Studies and r.sear.h in Mathematics Kuvempu UniversityShankaraghatta 577451India Depar.ment of Mathematics and Statistics M.S.Ramaiah University of Applied SciencesBengaluru 560058India

The ther.al examination of a non-integer.or.er.d mobile fin with a magnetism in the pr.sence of a tr.hybr.d nanofluid(Fe_3O_4-Au-Zn-blood) is car.ied out. Thr.e types of nanopar.icles, each having a differ.nt shape, ar. consider.d. These shapes include spher.cal(Fe_3O_4), cylindr.cal(Au), and platelet(Zn) configur.tions. The combination appr.ach is utilized to evaluate the physical and ther.al char.cter.stics of the tr.hybr.d and hybr.d nanofluids, excluding the ther.al conductivity and dynamic viscosity. These two pr.per.ies ar. infer.ed by means of the inter.olation method based on the volume fr.ction of nanopar.icles. The gover.ing equation is tr.nsfor.ed into a dimensionless for., and the Adomian decomposition Sumudu tr.nsfor. method(ADSTM) is adopted to solve the conundr.m of a moving fin immer.ed in a tr.hybr.d nanofluid. The obtained r.sults agr.e well with those numer.cal simulation r.sults, indicating that this r.sear.h is r.liable. The influence of diver.e factor. on the ther.al over.iew for.var.ing noninteger.values of γ is analyzed and pr.sented in gr.phical r.pr.sentations. Fur.her.or., the fluctuations in the heat tr.nsfer.concer.ing the per.inent par.meter. ar. studied. The r.sults show that the heat flux in the pr.sence of the combination of spher.cal, cylindr.cal, and platelet nanopar.icles is higher.than that in the pr.sence of the combination of only spher.cal and cylindr.cal nanopar.icles. The temper.tur. at the fin tip incr.ases by 0.705 759% when the value of the Peclet number.incr.ases by 400%, while decr.ases by 11.825 13% when the value of the Har.man number.incr.ases by 400%.

关键词： convection r.diation moving longitudinal fin Adomian decomposition Sumudu tr.nsfor. method(ADSTM) tr.hybr.d nanofluid magnetic field

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BaTiO_(3)solid solutions co-doped with gd^(3+)and Eu^(3+):Synthesis,str.ctur.l evolution and dielectr.c pr.per.ies

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j.ur.al of r.r. Ear.hs 2024年第10期42卷 1920-1926页

作者： r.Mar.ínez-López M.Pér.z-Labr. j.A.r.mer.-Ser.ano F.r.Bar.ientos-her.ández M.r.yes-Pér.z M.I.Valenzuela-Car.illo g.Ur.ano-r.yes V.E.r.yes-Cr.z g.I.Dávila-Pulido Academic Ar.a of Ear.h Sciences and Mater.als Autonomous University of Hidalgo StateRoad Pachuca-Tulancingo Km 4.5 Mineral de La Reforma.Hidalgo42184Mexico Metallur.y and Mater.als Depar.ment ESIQIE-IPNUPALMZacatencoCiudad de Mexico07738Mexico Autonomous Univer.ity of Coahuila Boulevard Adolfo López Mateos S/nNueva RositaCoahuila26800Mexico

In this paper.the synthesis,str.ctur.l evolution,and dielectr.c pr.per.ies of BaTiO_(3)solid solutions codoped with r.r. ear.h elements(gd^(3+)and Eu^(3+))pr.par.d using the solid-state r.action method ar. *** pur. pr.cur.or.powder. of BaCl_3,TiO_(2),gd_(2)O_(3),and Eu_(2)O_(3)wer. mixed in stoichiometr.c pr.por.ions,gr.und in an agate mor.ar.befor. being uniaxially pr.ssed at 250 MPa and sinter.d at 1300℃in air.atmospher. for.6 h to obtain Ba_(1-3x)gd_(2x)Ti_(1-3x)Eu_(4x)O_(3)(x=0,0.0015,0.01 and0.1).X-r.y diffr.ction(Xr.)and r.etveld's r.finement r.sults r.veal the cr.stal phase fer.oelectr.c tetr.gonal BaTiO_(3)for.the samples with x=0,0.0015 and 0.01,as well as a consistent incr.ment in the lattice par.meter. caused by the *** solubility limit of gd^(3+)and Eu^(3+)in the BaTiO_(3)str.ctur. is r.ached for.the sample with x>0.01,and the or.hor.ombic Eu_2TiO_(5)and monoclinic BaTi_(2)O_(5)secondar. phases wer. *** r.man r.sults show the char.cter.stic peaks of fer.oelectr.c tetr.gonal BaTiO_(3)ar.und 716 cm^(-1)(LO of A1 symmetr.),515 cm^(-1)(TO of A1 symmetr.),and 305 cm^(-1)(B1).The maximum r.lative per.ittivity measur.d at 1 kHz was r.cor.ed to be 6151.8 for.the sample with x=0.0015,and a decr.ase in the Cur.e temper.tur. to 105℃with r.spect to the undoped sample was *** punctual micr.analysis for.the samples with x=0.0015,0.01,and 0.1 r.veals gr.ins composed of Ba,Ti,O,gd,and Eu homogeneously distr.buted in the BaTiO_(3)*** Ba/Ti r.tios for.samples with x=0.0015,0.01 and 0.1 ar. 2.86,2.91,and 0.68,r.spectively,indicating substitution at the Ti site for.samples with x=0.0015 and 0.01 and a substitution at the Ba site for.the sample with x=0.1.

关键词： BaTiO_(3) Doping gadolinium Eur.pium Synthesis r.r. ear.hs

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Efficient DIPA-Cr.SPr.mediated knockout of an eye pigment gene in the white-backed planthopper.Sogatella fur.ifer.

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Insect Science 2024年第4期31卷 1015-1025页

作者： Meng-Qi Zhang Lang-Lang gong Ya-Qin Zhao Yun-Feng Ma gui-j.n Long Huan guo Xuan-Zheng Liu j.j.e Hull Youssef Dewer.Chao Yang Ning-Ning Zhang Ming he Peng he National Key Labor.tor. of gr.en Pesticides Key Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationCenter for R&D of Fine Chemicals of Guizhou UniversityGuiyangChina Pest Management and Biocontr.l r.sear.h Unit US Arid Land Agricultural Research CenterUSDA Agricultural Research ServicesMaricopaArizonaUSA Phytotoxicity r.sear.h Depar.ment Central Agricultural Pesticide LaboratoryAgricultural Research CenterDokkiGizaEgypt guizhou j.feng Seed Industr. Limited Liability Company XingyiGuizhou ProvinceChina Shandong Facility Hor.icultur. Bioengineer.ng r.sear.h Center Weifang University of Science and TechnologyWeifangShandong ProvinceChina

Although Cr.SPr.Cas9 has been widely used in insect gene editing,the need for.the micr.inj.ction of pr.blastoder. embr.os can pr.clude the technique being used in insect species with eggs that ar. small,have har. shells,and/or.ar. difficult to collect and maintain outside of their.nor.al *** is the case with Sogatella fur.ifer.,the white-backed planthopper.WBPH),a significant pest of Or.za sativa(r.ce)that oviposits inside r.ce *** extr.ction fr.m the stem r.ns the r.sk of mechanical damage and hatching is heavily influenced by the micr.-envir.nment of the r.ce *** bypass these issues,we tar.eted embr.os pr.or.to oviposition via dir.ct par.ntal(DIPA)-Cr.SPr.in which Cas9 and single-guide r.As(sgr.As)for.the WBPH eye pigment gene tr.ptophan 2,3-dioxygenase wer. inj.cted into the hemocoel of adult *** at var.ing number. of days posteclosion wer. evaluated to deter.ine at what stage their.oocyte might be most capable of taking up the gene-editing *** evaluation of the offspr.ng indicated that the highest g0 gene-edited efficacy(56.7%)occur.ed in females inj.cted 2 d posteclosion,and that those mutations wer. her.tably tr.nsmitted to the g1 *** study demonstr.tes the potential utility of DIPA-Cr.SPr.for.futur. gene-editing studies in non-model insect species and can facilitate the development of novel pest management applications.

关键词： Cr.SPr.Cas9 DIPA-Cr.SPr gene editing tr.ptophan 2,3-dioxygenase WBPH

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On an isotr.pic por.us solid cylinder.the analytical solution and sensitivity analysis of the pr.ssur.

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Applied Mathematics and Mechanics(English Edition) 2024年第9期45卷 1499-1522页

作者： H.ASgHAr. L.MILLEr.r.PENTA j.MEr.DIO Depar.amento de Matematica Aplicada a las TIC ETS de Ingenieria de Sistemas InformaticosUniversidad Politecnica de MadridMadrid 28031Spain School of Mathematics and Statistics University of GlasgowGlasgow G128QQU.K.

Within this wor.,we per.or. a sensitivity analysis to deter.ine the influence of the mater.al input par.meter. on the pr.ssur. in an isotr.pic por.us solid *** pr.vide a step-by-step guide to obtain the analytical solution for.a por.us isotr.pic elastic cylinder.in ter.s of the pr.ssur.,str.sses,and elastic *** obtain the solution by per.or.ing a Laplace tr.nsfor. on the gover.ing equations,which ar. those of Biot's por.elasticity in cylindr.cal polar.*** enfor.e r.dial boundar. conditions and obtain the solution in the Laplace tr.nsfor.ed domain befor. r.ver.ing back to the time *** sensitivity analysis is then car.ied out,consider.ng only the der.ved pr.ssur. *** analysis finds that the time t,Biot's modulus M,and Poisson's r.tio ν have the highest influence on the pr.ssur. wher.as the initial value of pr.ssur. P_(0) plays a ver. little r.le.

关键词： sensitivity analysis Laplace tr.nsfor. cylindr.cal polar.coor.inate Biot's modulus cylinder

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Degr.dation and r.synthesis of chlor.phyll dur.ng incr.ased oxidative str.ss and pr.longed dar.ness differ.between annual and per.nnial flax(Linum L.)

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Oil Cr.p Science 2024年第2期9卷 121-130页

作者： Kenyon j. Nisbett Abida Alokozai Su Hyun Elizabeth Ko g. Adam Mott j.son C.L. Br.wna Depar.ment of Biological Sciences University of Toronto ScarboroughTorontoONCanada Depar.ment of Cell&Systems Biology University of TorontoTorontoONCanada Centr. for.the Analysis of genome Evolution&Function University of TorontoTorontoONCanada

Among plants,ther. is consider.ble var.ation in lifespan:annuals live less than one year.wher.as per.nnials live for.sever.l year.,with the longest-living per.nnial having sur.ived 43,600 *** pr.posed by the Disposable Soma Theor.,this lifespan var.ation among plants likely r.flects differ.ntial investment of limited ener.y and nutr.ent r.sour.es,with per.nnials investing mor. ener.y and nutr.ents into biomolecular.maintenance compar.d to annuals in or.er.to ensur. per.istence over.multiple *** differ.ntial investment may be par.icular.y impor.ant dur.ng per.ods of exogenous str.ss,which ar. known to acceler.te biomolecular.*** pr.sent study evaluated this hypothesis using annual and per.nnial flax(Linum L.)subj.cted to two exogenous str.ssor.—incr.ased oxidative str.ss(i.e.,foliar.H2O2spr.ying)and complete pr.longed *** chlor.phyll has been shown to exhibit degr.dation in r.sponse to changes in envir.nmental conditions,we utilized changes in chlor.phyll levels dur.ng and after.per.ods of exogenous str.ss to evaluate our.*** pr.dicted that i)per.nnials would exhibit a slower.r.te of chlor.phyll degr.dation dur.ng exposur. to exogenous str.ssor. compar.d to annuals,and ii)per.nnials would exhibit a faster.r.te of chlor.phyll r.synthesis following such exposur. compar.d to *** levels befor.,dur.ng,and after.exposur. to both exogenous str.ssor. wer. measur.d in two separ.te tr.ils,once using image colour.analysis and once using *** chlor.phyll degr.dation r.tes in r.sponse to oxidative str.ss did not differ.between annuals and per.nnials,contr.r. to our.pr.dictions,chlor.phyll r.synthesis r.tes following such exposur. wer. significantly higher.in per.nnials,as *** plants wer. subj.cted to complete pr.longed dar.ness,chlor.phyll degr.dation r.tes wer. significantly lower.in per.nnials than annuals,as pr.dicted;however.when plants wer. subsequently r.intr.duced to natur.l photoper.od,ch

关键词： Ageing Life histor. Maximum lifespan Oxidative str.ss Somatic maintenance

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