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Assessing the biennial confer.nce on science and technology (BICOST IX) 2023 technical outp.t on r.newable ener.y, ener.y stor.ge, and gr.en hydr.gen in line with UN SDG com.itm.nts

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CLEAN ENEr.Y 2024年第2期8卷 85-88页

作者： Silva, S. k. B. D. p.yum.li, k. G. D. p.r.r., r.sitha Thilini Sur.njana k.luar.chchi, k. D. k. G. m.nagam.ge, Thilini Aham.ed, r. m. r. p.yank.r.ge, C. S. p. Shahm., Seyed k.r.nar.tne, Ver.nja Natl Sci & Technol Com.iss Sr. Lank. Colombo Sri Lanka Sr. Lank. Technol Cam.0}s Padukka 10500 Sri Lanka Univ p.r.deniya Peradeniya Sri Lanka

The develop.ent, p.oduction and utilization of r.newable ener.y, ener.y stor.ge and gr.en hydr.gen and the associated technologies in Sr. Lank. have gr.at p.tential to contr.bute to the United Nations' Sustainable Develop.ent Goals (SDGs). The island aim. to achieve 70% electr.city gener.tion fr.m.r.newable ener.y sour.es by 2030 (within the tar.et of 40% utilization of r.newable ener.y sour.es for.the entir. ener.y gener.tion of the countr. by 2030). The p.wer.sector.has to invest US$11 billion fr.m.2023 to 2030 to contr.bute to r.aching this tar.et. This com.entar. aim. to p.ovide a cr.tical p.r.p.ctive on the r.com.endations of the r.p.r. fr.m.the National Science and Technology Com.ission's 9th biennial confer.nce in 2023 on science and technology, the sub-them.tic technical r.p.r. on clean ener.y, ener.y stor.ge and gr.en hydr.gen in line with the SDGs in the Sr. Lank.n context. The technical r.p.r. p.ovides insightful r.com.endations for.Sr. Lank.'s ener.y sector.under.thr.e m.in sections: r.newable ener.y, ener.y stor.ge and gr.en hydr.gen. Also, it exp.or.s the p.tential of var.ous r.newable ener.y sour.es, ener.y stor.ge system. and gr.en hydr.gen as sustainable solutions to addr.ss the countr.'s ener.y challenges while em.0}asizing the sp.llover.effects of them. which could contr.bute to the enter.0}ise's job cr.ation and up.ift the econom.. This com.entar. p.ovides a cr.tical p.r.p.ctive on clean ener.y, ener.y stor.ge and gr.en hydr.gen in line with the United Nations SDGs in the Sr. Lank.n context based on a r.cent r.p.r. fr.m.the National Science and Technology Com.ission of Sr. Lank.. Gr.p.ical Abstr.ct

关键词： r.newable ener.y ener.y stor.ge gr.en hydr.gen sustainable develop.ent goals Sr. Lank. social econom.c envir.nm.ntal sustainable affor.able

Excellent p.otolum.nescence and electr.chem.cal p.op.r.ies of Sm.(3+) dop.d Ca_(2)m.Si_(2)O_(7) nanop.osp.or.Disp.ay and electr.chem.cal sensor.ap.lications

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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.shk.m.r.D.p.Aar.i m.B.m.dhusudana reddy G.Nagar.ju T.r.m.k.ishnap.a G.r.Navyashr.e k.r.Venk.tesha Babu k.S.Hem.latha Dep.r.m.nt of p.ysics BMS Institute of Technology and ManagementBangalore560064India Dep.r.m.nt of Chem.str. BMS Institute of Technology and ManagementBangalore560064India Dep.r.m.nt of Chem.str. School of Applied SciencesREVA UniversityBangalore560064India Ener.y m.ter.als r.sear.hLabor.tor. Department of ChemistrySiddaganga Institute of TechnologyTumakuru57203KarnatakaIndia School of p.ysical Sciences REVA UniversityBangalore560057Indi Dep.r.m.nt of p.ysics Govt.Science CollegeBengaluru560001India Dep.r.m.nt of p.ysics Maharani Science College for WomenMaharani Cluster UniversityBengaluru560001India

A ser.es of or.nge-r.d light em.tting Ca_(2)m.Si_(2)O_(7):Sm.(3+)nanop.wder. wer. fabr.cated via low-cost ecofr.endly gr.en com.ustion technique using Aloe ver. gel as *** p.ase p.r.ty of the sam.0}es wer. confir.0}d by the p.wder.X-r.y diffr.ction(p.r.)*** single-p.ase tetr.gonal str.ctur. is obser.ed fr.m.the p.r. r.sults with no additional im.0}r.ty *** band gap.ener.y of the fabr.cated p.wder. was estim.ted by diffuse r.flectance sp.ctr.(Dr.)and is found to be in the r.nge of 4.01-5.98 eV.A high r.solution scanning electr.n m.cr.scop.(SEm.was used to study the m.r.3}ological behaviour.of the ***-lik. str.ctur.s ar. obser.ed fr.m.the SEm.*** p.r.icle size was evaluated by tr.nsm.ssion electr.n m.cr.scop.(TEm.and is found to be~50 *** inter.3}anar.distance is found to be 0.53 *** p.op.r.ies wer. system.tically studied in *** p.osp.or. ar. successfully excited at 403 nm.NUV light,p.oducing r.ddish-or.nge char.cter.stic *** em.ssion p.ak. 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 p.ak. the r.d em.nation(^(4)G_(5/2)→^(6)H_(7/2))is str.nger.than the or.nge em.ssion(^(4)G_(5/2)→^(6)H_(5/2))in the cur.ent *** p.otolum.nescent concentr.tion quenching is noticed above 5 m.l%Sm.(3+)ion dop.ng *** dip.le-dip.le inter.ction r.sulting in cr.ss r.laxation is found to be the p.incip.l cause of concentr.tion quenching *** color.featur.s such as Com.ission Inter.ationale de I’Eclair.ge(CIE)and cor.elated color.tem.0}r.tur.(CCT)wer. studied in *** op.im.zed chr.m.ticity coor.inates wer. estim.ted to be(0.6363,0.3632),which fall in the r.ddish-or.nge *** aver.ge CCT value obtained is 3362 *** aver.ge color.p.r.ty is found to be~82%.Sm.(3+)incor.3}r.ted Ca_(2)m.Si_(2)O_(7) sam.0}es ar. p.ssible contender.for.single white light gener.tion com.er.ial candidates owing to

关键词： Gr.en com.ustion p.otolum.nescence Or.nge-r.d em.ssion Color.p.r.ty Sensor. r.r. ear.hs

Enhanced entr.p. gener.tion and heat tr.nsfer.char.cter.stics of m.gnetic nano-encap.ulated p.ase change m.ter.als in latent heat ther.1}l ener.y stor.ge system.

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Ap.lied m.them.tics and m.chanics(English Edition) 2024年第6期45卷 1051-1070页

作者： p.S.reddy p.Sr.EDEVI Dep.r.m.nt of m.them.tics Rajeev Gandhi Memorial College of Engineering and TechnologyNandyal 518501India

The objective of the cur.ent study is to investigate the im.0}r.ance of entr.p. gener.tion and ther.0}l r.diation on the p.tter.s of velocity,isentr.p.c lines,and tem.0}r.tur. contour. within a ther.0}l ener.y stor.ge device filled with m.gnetic nanoencap.ulated p.ase change m.ter.als(NEp.m.).The ver.atile finite elem.nt m.thod(FEm.is im.0}em.nted to num.r.cally solve the gover.ing *** effects of var.ous p.r.m.ter.,including the viscosity p.r.m.ter.r.nging fr.m.1 to 3,the ther.0}l conductivity p.r.m.ter.r.nging fr.m.1 to 3,the r.yleigh p.r.m.ter.r.nging fr.m.102 to 3×10^(2),the r.diation num.er.r.nging fr.m.0.1 to 0.5,the fusion tem.0}r.tur.,r.nging fr.m.1.0 to 1.2,the volum. fr.ction of NEp.m.,r.nging fr.m.2%to 6%,the Stefan num.er.r.nging fr.m.1 to 5,the m.gnetic num.er.r.nging fr.m.0.1 to 0.5,and the ir.ever.ibility p.r.m.ter.r.nging fr.m.0.1 to 0.5,ar. exam.ned in detail on the tem.0}r.tur. contour.,isentr.p.c lines,heat cap.city r.tio,and velocity ***,the heat tr.nsfer.r.tes at both the cold and hot walls ar. analyzed,and the findings ar. p.esented *** r.sults indicate that the tim. tak.n by the NEp.m. to tr.nsition fr.m.solid to liquid is p.olonged inside the cham.er.r.gion as the fusion tem.0}r.tur.θf ***,the contour. of the heat cap.city r.tio Cr.decr.ase with the incr.ase in the Stefan num.er.Ste.

关键词： volum. fr.ction of nano-encap.ulated p.ase change m.ter.al(NEp.m. r.diation Stefan num.er heat cap.city r.tio entr.p. gener.tion

Fir.t-p.incip.es calculations to investigate str.ctur.l,electr.nic,m.gnetic,op.ical and ther.2}dynam.c p.op.r.ies of r._(2)r._(3)Ge(r.=p.,Sm.

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Jour.al of r.r. Ear.hs 2024年第7期42卷 1385-1393,I0007页

作者： A.Ezaier.r.m.sr.ur.m.Ham.doun J.k.ar.ach A.r.zzouk.A.Hour.0}tallah N.Benzak.ur.k.Bouslyk.ane Labor.tor. of Solid p.ysics Faculty of Sciences Dhar El MehrazSidi Mohamed Ben Abdellah UniversityBP 1796FezMorocco Equip. de p.ysique du Solide LaboratoiresLIPIEcole Normale SupérieureBensoudaFèsMorocco

In this p.p.r.we analyzed the p.ysical char.cter.stics of the ter.ar. alloys r._(2)r._(3)Ge(r.=p. and Sm.using the fir.t p.incip.es calculation based on functional density theor. integr.ted in the Wien2k.*** calculated for.4}tion ener.ies of p._(2)r._(3)Ge and Sm.(2)r._(3)Ge ar.−5.3827 and−5.2782 eV/atom.r.sp.ctively,showing that these alloys m.y exist *** r.sults of the band str.ctur. and density of states indicate that all of the com.0}unds tested ar. m.gnetic m.tals,and their.m.gnetism.is m.stly r.lated to the contr.bution of p. and Sm.*** total m.gnetic m.m.nts of p._(2)r._(3)Ge and Sm.(2)r._(3)Ge ar. 4.07245 and 11.16161μB/f.u,*** p.r.m.ter. such as heat cap.city at constant p.essur.,entr.p.,Debye tem.0}r.tur.,lattice volum.,com.0}essibility coefficients,and Gr.neisen p.r.m.ter.alloys wer. calculated using the Gibbs algor.thm.and studied in dep.h over.a lar.e tem.0}r.tur. r.nge of 0-900 *** Debye tem.0}r.tur. incr.ases with incr.asing p.essur. and decr.ases with decr.asing ***,the Debye tem.0}r.tur.s calculated at p.0 Gp. and T=300 k.ar. equal to be 342 and 322 k.for.p._(2)r._(3)Ge and Sm.(2)r._(3)Ge,*** op.ical char.cter.stics such as the r.al and im.ginar. p.r.ions of the dielectr.c function,the absor.0}ion coefficient,the ener.y-loss function,and the r.fr.ctive index wer. investigated and discussed in m.r. dep.h.

关键词： m.gnetic m.tals Functional density theor. Density of states m.gnetic m.m.nt Op.ical and ther.1}dynam.c p.op.r.ies r.r. ear.hs

A m.chine Lear.ing Classification m.del for.Detecting p.ediabetes

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Jour.al of Data Analysis and Infor.0}tion p.ocessing 2024年第3期12卷 462-478页

作者： A. k. m. r.quibul Bashar.m.hdi Goudar.i Chr.s p. Tsok.s Dep.r.m.nt of m.them.tics & Com.0}ter.Science Augustana College Rock Island Illinois USA Indep.ndent r.sear.her San Francisco California USA Dep.r.m.nt of m.them.tics & Statistics University of South Florida Tampa Florida USA

The incidence of p.ediabetes is in a danger.us condition in the USA. The lik.lihood of incr.asing chr.nic and com.0}ex health issues is ver. high if this stage of p.ediabetes is ignor.d. So, ear.y detection of p.ediabetes conditions is cr.tical to decr.ase or.avoid typ. 2 diabetes and other.health issues that com. as a r.sult of untr.ated and undiagnosed p.ediabetes condition. This study is done in or.er.to detect the p.ediabetes condition with an ar.ificial intelligence m.thod. Data used for.this study is collected fr.m.the Center. for.Disease Contr.l and p.evention’s (CDC) sur.ey conducted by the Division of Health and Nutr.tion Exam.nation Sur.eys (DHANES). In this study, sever.l m.chine lear.ing algor.thm. ar. exp.oited and com.0}r.d to deter.2}ne the best algor.thm.based on Aver.ge Squar.d Er.or.(ASE), k.lm.gor.v-Sm.r.ov (Youden) scor.s, ar.as under.the r.C and som. other.m.asur.s of the m.chine lear.ing algor.thm. Based on these scor.s, the cham.0}on m.del is selected, and r.ndom.For.st is the cham.0}on m.del with ap.r.xim.tely 89% accur.cy.

关键词： p.ediabetes m.chine Lear.ing SVm For.st Cum.lative Lift

In vivo and in vitr. study of r.sor.able m.gnesium.wir.s for.m.dical im.0}ants:m. p.r.ty,sur.ace quality,Zn alloying and p.lym.r.coating

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Jour.al of m.gnesium.and Alloys 2024年第6期12卷 2472-2488页

作者： k.Tesar.J.Luňáck.vá m.Jex m.Žaloudk.vá r.Vr.ová m.Bar.oš p.k.ein L.Vištejnová J.Dušk.vá E.Filová Z.Suchar.a m.Steiner.vá S.Habr.k.Balík.A.Singh Dep.r.m.nt of m.ter.als Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in PragueTrojanova 13Prague 12000Czech Republic Institute of p.ysics Czech Academy of SciencesNa Slovance 2Prague 18221Czech Republic Institute of Dental m.dicine First Faculty of MedicineCharles University and General University Hospital in PragueKaterinská32Prague 12801Czech Republic Dep.r.m.nt of p.ysics Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in PragueBrehová7Prague 11519Czech Republic Dep.r.m.nt of Com.0}sites and Car.on m.ter.als Institute of Rock Structure and MechanicsCzech Academy of SciencesV Holešovickách 41Prague 18209Czech Republic Institute of Anatom. First Faculty of MedicineCharles UniversityU Nemocnice 3Prague 12800Czech Republic Biom.dical Center Faculty of Medicine in PilsenCharles UniversityAlej Svobody 76Pilsen 32300Czech Republic Dep.r.m.nt of p.thological p.ysiology Faculty of Medicine in PilsenCharles UniversityAlej Svobody 7632300 PilsenCzech Republic Dep.r.m.nt of Histology and Em.r.ology Faculty of Medicine in PilsenCharles UniversityAlej Svobody 7632300 PilsenCzech Republic Institute of p.thology First Faculty of MedicineCharles University and General University Hospital in PragueStudnickova 2Prague 12800Czech Republic Dep.r.m.nt of Biom.ter.als and Tissue Engineer.ng Institute of PhysiologyCzech Academy of SciencesVidenska 1083Prague 14200Czech Republic r.sear.h Center.for.Str.ctur.l m.ter.als National Institute for Materials Science1-2-1 SengenTsukuba 305-0047Japan

m.gnesium.is an excellent m.ter.al in ter.0} of biocom.0}tibility and its cor.osion p.oducts can ser.e as an active sour.e for.new bone ***,localized cor.osion and H_(2)gener.tion lim.t the p.tential of m.-based *** low-alloyed m.-Zn wir.s can str.ngly r.duce p.oblem. with lar.e H_(2)bubbles and im.0}ove the m.chanical p.op.r.ies consider.bly while m.intaining excellent long-ter.0}*** p.ck.ing and a p.lym.r.coating can be effectively used to lower.the r.te of in vivo *** this wor.19}m.cr.str.ctur.l,m.chanical,and in vitr. char.cter.zation of 250μm.and 300μm.extr.ded wir.s m.de fr.m.ultr.-p.r. m.,com.er.ially p.r. m.,m.-0.15Zn,m.-0.4Zn and m.-1Zn was ***,m.-0.4Zn wir.s together.with a var.ant coated with a cop.lym.r.of L-lactide andε-cap.olactone wer. tested in vivo on ar.ificially dam.ged Wistar.r.t *** on the obser.ed m.-induced osteogenesis,p.lym.r.coated m. wir.s with a sm.ll addition of Zn ar. a p.r.p.ctive m.ter.al for.bone-sup.or. ap.lications,such as cer.lage and fixation wir.s.

关键词： m.gnesium r.sor.able m. wir. m.-Zn im.0}ant degr.dation Biocom.0}tibility study Zn gr.in boundar. segr.gation

Sm.ll m.lecule inhibitor.DDQ-tr.ated hip.ocam.0}l neur.nal cells show im.0}oved neur.te outgr.wth and synap.ic br.nching

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Neur.l r.gener.tion r.sear.h 2025年第9期20卷 2624-2632页

作者： Jangam.0}lli Adi p.adeep.ir.n p.iyank. r.wat Ar.bala p.reddy Er.k. Or.ov p.em.chandr. reddy Dep.r.m.nt of Inter.al m.dicine Texas Tech University Health Sciences CenterLubbockTXUSA Dep.r.m.nt of Nutr.tional Sciences College of Human SciencesTexas Tech UniversityLubbockTXUSA Dep.r.m.nt of p.ar.1}cology&Neur.science Texas Tech University Health Sciences CenterLubbockTXUSA Dep.r.m.nt of Neur.logy Texas Tech University Health Sciences CenterLubbockTXUSA Dep.r.m.nt of Sp.ech Language and Hearing SciencesTexas Tech University Health Sciences CenterLubbockTXUSA Dep.r.m.nt of p.blic Health Texas Tech University Health Sciences CenterLubbockTXUSA

The p.ocess of neur.te outgr.wth and br.nching is a cr.cial asp.ct of neur.nal develop.ent and *** and dendr.tes,som.tim.s r.fer.ed to as neur.tes,ar. extensions of a neur.n's cellular.body that ar. used to star. *** we exp.or.d the effects of diethyl(3,4-dihydr.xyp.enethylam.no)(quinolin-4-yl)m.thylp.osp.onate(DDQ)on neur.te develop.ental featur.s in HT22 neur.nal *** this wor.12}we exam.ned the p.otective effects of DDQ on neur.nal p.ocesses and synap.ic outgr.wth in differ.ntiated HT22cells exp.essing m.tant Tau(m.au)*** investigate DDQ char. cter.stics,cell viability,biochem.cal,m.lecular.wester. blotting,and im.unocytochem.str. wer. *** outgr.wth is evaluated thr.ugh the segm.ntation and m.asur.m.nt of neur.l *** neur.l p.ocesses can be seen and m.asur.d with a fluor.scence m.cr.scop. by m.nually tr.cing and m.asur.ng the length of the neur.te *** neur.nal p.ocesses can be obser.ed and quantified with a fluor.scent m.cr.scop. by m.nually tr.cing and m.asur.ng the length of the neur.nal ***-tr.ated m.au-HT22 cells(HT22 cells tr.nsfected with cDNA m.tant Tau)wer. seen to disp.ay incr.ased levels of synap.op.ysin,m.p.2,andβ-***,we confir.3}d and noted r.duced levels of both total and p.Tau,as well as elevated levels of m.cr.tubule-associated p.otein 2,β-tubulin,synap.op.ysin,vesicular.acetylcholine tr.nsp.r.er.and the m.tochondr.al biogenesis p.otein-p. r.xisom. p.olife r.tor.activated r.cep.or.gam.a coactivator.1α.In m.a u-exp.essed HT22 neur.ns,we obser.ed DDQ enhanced the neur.te char.cter.stics and im.0}oved neur.te develop.ent thr.ugh incr.ased synap.ic *** findings conclude that m.a u-HT22(Alzheim.r.s disease)cells tr.ated with DDQ have functional neur.te develop.ental char. *** k.y finding is that,in m.a u-HT22 cells,DDQ p.eser.es neur.nal str.ctur. and m.y even enhance ner.e develop.ent function with m.a u inhibition.

关键词： diethyl(3 4-dihydr.xyp.enethylam.no)(quinolin-4-yl)m.thylp.osp.onate(DDQ) hip.ocam.0}l neur.nal cells HT22 neur.te outgr.wth neur.nal develop.ent sm.ll m.lecule

Dir.ct-Seeded r.ce: Genetic Im.0}ovem.nt of Gam.-Changing Tr.its for.Better.Adap.ion

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r.ce science 2024年第4期31卷 417-433页

作者： p.iyank. NEGI Jagadish r.NE r.jendr. Sadashiv WAGH Tuk.r.m.Jayar.m.BHOr.Dip.i Digam.ar.GODSE p.iyank. JADHAV C.ANILk.m.r.Dasar. Sr.Ek.NTH k.SAm.I reddy Shar.d r.m.ao GADAk. k.m.BOr.IH C.B.HAr.SHA p.S.BASAVAr.J Indian Council of Agr.cultur.l r.sear.h(ICAr.-National Institute of Abiotic Str.ss m.nagem.nt Baramati 413115India m.hatm. p.ule k.ishi Vidyap.eth Rahuri 413722India ICAr.Centr.l Institute for.Ar.d Hor.icultur. Bikaner 334006India ICAr.National r.ce r.sear.h Institute Cuttack 753006India ICAr.Dir.ctor.te of Weed r.sear.h Jabalpur 482004India Dr.p.njabr.o Deshm.k. k.ishi Vidyap.eth Akola 444104India

The sustainability of r.ce p.oduction continues to be a subject of uncer.ainty and inquir. attr.buted to shifts in clim.tic conditions. In light of the im.0}nding clim.te change cr.sis and the high labor.and water.costs accom.0}nying it, dir.ct-seeded r.ce(DSr. is unquestionably one of the m.st p.actical solutions. Desp.te its r.sour.e and clim.te-fr.endly advantages, ear.y m.tur.ng r.ce faces weed com.0}titiveness and seedling establishm.nt challenges. r.solving these issues is cr.cial for.p.om.ting its wider.adop.ion am.ng far.1}r., p.esenting it as a m.r. effective sustainable r.ce cultivation m.thod globally. Diver.e tr.ditional and contem.0}r.r. br.eding m.thods ar. em.0}oyed to m.tigate the lim.tations of the DSr.ap.r.ach, lever.ging advanced techniques such as sp.ed br.eding and genom. editing. Focusing on k.y tr.its lik. m.socotyl length elongation, ear.y seedling vigor. r.ot system.ar.hitectur., and weed com.0}titiveness holds p.om.se for.tr.nsfor.1}tive im.0}ovem.nts in DSr.adap.ation at a br.ader.scale within far.1}ng com.unities. This r.view aim. to sum.ar.ze how these featur.s contr.bute to incr.ased cr.p.p.oduction in DSr.conditions and exp.or. the r.sear.h effor.s focusing on enhancing DSr.adap.ation thr.ugh these tr.its. Em.0}asizing the p.votal r.le of these gam.-changing tr.its in DSr.adap.ation, our.analysis sheds light on their.p.tential tr.nsfor.1}tive im.0}ct and offer. valuable insights for.advancing DSr.p.actices.

关键词： clim.te change dir.ct-seeded r.ce aer.bic r.ce ear.y vigor.tr.it

Dr.ught events influence nutr.ent canop. exchanges and gr.en leaf p.r.itioning dur.ng senescence in a deciduous for.st

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For.st Ecosystem. 2024年第1期11卷 110-119页

作者： J.Touche C.Calvar.so p.De Donato m.-p.Tur.0}ult INr.E BEFF-54000NancyFrance Um. 7359 GeoRessourcesFaculte des Sciences-Campus des Aiguillettes54506Vandoeuvre Les NancyFrance EcoSustain Environmental Engineering OfficeResearch and DevelopmentKanfen57330France

The incr.ase in the fr.quency and intensity of dr.ught events exp.cted in the com.ng decades in Wester. Eur.p. m.y distur. for.st biogeochem.cal cycles and cr.ate nutr.ent deficiencies in *** p.ssible or.gin of nutr.ent deficiency is the distur.ance of the p.r.itioning of the gr.en leaf p.ol dur.ng the leaf senescence p.r.od between r.sor.0}ion,foliar.leaching and senesced ***,the effects of dr.ught events on this p.r.itioning and the consequences for.the m.intenance of tr.e nutr.tion ar. p.or.y *** exp.r.m.nt in a beech for.st in m.use(Fr.nce)was conducted to assess the effect of dr.ught events on nutr.ent canop. exchanges and on the p.r.itioning of the gr.en leaf p.ol dur.ng the leaf senescence *** aim.was to identify p.tential nutr.tional consequences of dr.ughts for.*** nutr.ent dynam.cs,including r.sor.0}ion,chem.str. of gr.en and senesced leaves,foliar.absor.0}ion and leaching in m.tur. beech stands fr.m.2012 to 2019 allowed us to com.0}r. the nutr.ent exchanges for.thr.e nondr. and thr.e dr. year.(i.e.,with an intense dr.ught event dur.ng the gr.wing season).Dur.ng dr. year.,we obser.ed a decr.ase by alm.st a thir. of the p.tassium.k.p.r.itioning to r.sor.0}ion(*** efficiency),thus r.ducing the k.r.ser.e in tr.es for.the next gr.wing *** r.sult suggests that with the incr.ased dr.ught fr.quency and intensity exp.cted for.the com.ng decades,ther. will be a r.sk.of p.tassium.deficiency in tr.es,as alr.ady obser.ed in a r.infall exclusion exp.r.m.nt on the sam. study *** foliar.leaching and higher.p.r.titioning to the senesced leaves for.k.and p.osp.or.s(p.wer. also *** addition,a slight incr.ase in nitr.gen(N)r.sor.0}ion efficiency occur.ed dur.ng dr. year. which is m.r. lik.ly to im.0}ove tr.e *** calcium.Ca)negative r.sor.0}ion decr.ased,with no ap.ar.nt consequence in our.study *** r.sults show that nutr.ent exchanges in the canop. and the p.r.itioning of the gr.en leaf

关键词： Natur.l dr.ught Beech for.st Canop. r.sor.0}ion Foliar.leaching Senesced leaves Nutr.tion