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Drought events influenc. nutrient c.nop. exc.anges and green leaf p.rtitioning during senesc.nc. in a dec.duous forest

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Forest Ec.systems 2024年第1期11卷 110-119页

作者： J.Touc.e c.c.lvaruso p.De Donato M.-p.Turp.ult INRAE BEFF-54000NancyFrance UMR 7359 GeoRessourcesFaculte des Sciences-Campus des Aiguillettes54506Vandoeuvre Les NancyFrance Ec.Sustain Environmental Engineering OfficeResearch and DevelopmentKanfen57330France

The inc.ease in the frequenc. and intensity of drought events exp.c.ed in the c.ming dec.des in Western Europ. may disturb forest biogeoc.emic.l c.c.es and c.eate nutrient defic.enc.es in *** p.ssible origin of nutrient defic.enc. is the disturbanc. of the p.rtitioning of the green leaf p.ol during the leaf senesc.nc. p.riod between resorp.ion,foliar leac.ing and senesc.d ***,the effec.s of drought events on this p.rtitioning and the c.nsequenc.s for the maintenanc. of tree nutrition are p.orly *** exp.riment in a beec. forest in Meuse(Franc.)was c.nduc.ed to assess the effec. of drought events on nutrient c.nop. exc.anges and on the p.rtitioning of the green leaf p.ol during the leaf senesc.nc. *** aim was to identify p.tential nutritional c.nsequenc.s of droughts for *** nutrient dynamic.,inc.uding resorp.ion,c.emistry of green and senesc.d leaves,foliar absorp.ion and leac.ing in mature beec. stands from 2012 to 2019 allowed us to c.mp.re the nutrient exc.anges for three nondry and three dry years(i.e.,with an intense drought event during the growing season).During dry years,we observed a dec.ease by almost a third of the p.tassium(K)p.rtitioning to resorp.ion(*** effic.enc.),thus reduc.ng the K reserve in trees for the next growing *** result suggests that with the inc.eased drought frequenc. and intensity exp.c.ed for the c.ming dec.des,there will be a risk of p.tassium defic.enc. in trees,as already observed in a rainfall exc.usion exp.riment on the same study *** foliar leac.ing and higher p.rititioning to the senesc.d leaves for K and p.osp.orus(p.were also *** addition,a slight inc.ease in nitrogen(N)resorp.ion effic.enc. oc.urred during dry years whic. is more likely to imp.ove tree *** c.lc.um(c.)negative resorp.ion dec.eased,with no ap.arent c.nsequenc. in our study *** results show that nutrient exc.anges in the c.nop. and the p.rtitioning of the green leaf

关键词： Natural drought Beec. forest c.nop. Resorp.ion Foliar leac.ing Senesc.d leaves Nutrition

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HI in High Gas-p.ase Metallic.ty Dwarf Galaxy WISEA J230615.06+143927.9

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Researc. in Astronomy and Astrop.ysic. 2024年第1期24卷 292-299页

作者： Yan Guo c.Sengup.a T.c.Sc.tt p.Lagos Y.Luo p.rp.e Mountain Observatory Chinese Academy of SciencesNanjing 210023China Sc.ool of Astronomy and Sp.c. Sc.enc.s University of Science and Technology of ChinaHefei 230026China Institute of Astrop.ysic. and Sp.c. Sc.enc.s(IA p.rto) Rua das Estrelas4150-762PortoPortugal

We p.esent resolved Giant Metrewave Radio Telesc.p. H I observations of the high gas-p.ase metallic.ty dwarf galaxy WISEA J230615.06+143927.9(z = 0.005)(hereafter J2306) and investigate whether it c.uld be a Tidal Dwarf Galaxy(TDG) c.ndidate. TDGs are observed to have higher metallic.ties than normal dwarfs. J2306 has an unusual c.mbination of a blue g-r c.lor of 0.23 mag, irregular op.ic.l morp.ology and high-metallic.ty(12 +log(O/H) = 8.68 ± 0.14), making it an interesting galaxy to study in more detail. We find J2306 to be an H I ric. galaxy with a large extended, unp.rturbed rotating H I disk. Using our H I data we estimated its dynamic.l mass and found the galaxy to be dark matter(DM) dominated within its H I radius. The quantity of DM, inferred from its dynamic.l mass, ap.ears to rule out J2306 as an evolved TDG. A wide area environment searc. reveals J2306 to be isolated from any larger galaxies whic. c.uld have been the sourc. of its high gas metallic.ty. Additionally, the H I morp.ology and kinematic. of the galaxy show no indic.tion of a rec.nt merger to exp.ain the *** detailed op.ic.l sp.c.rosc.p.c.observations of J2306 might p.ovide an answer to how a seemingly ordinary irregular dwarf galaxy ac.ieved suc. a high level of metal enric.ment.

关键词： galaxies:abundanc.s galaxies:dwarf galaxies:irregular radio lines:galaxies radio lines:ISM

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c. oxidation under lean and stoic.iometric.c.nditions over c.riazirc.nia with very low metal c.ntents(c.,c.,Ag and p.)

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Journal of Rare Earths 2024年第9期42卷 1669-1681,I0002页

作者： J.c.Martínez-Munuera M.p.Yeste A.Garc.a-Garc.a Mc.A Group Department of Inorganic Chemistry and Institute of MaterialsUniversity of AlicanteCarretera de San Vicente del Raspeig s/n03690San Vicente del RaspeigAlicanteSpain Solid c.emistry and c.talysis Group Department of Materials ScienceMetallurgic Engineering and Inorganic ChemistryInstitute of Electronic Microscopy and Materials ResearchUniversity of CádizAp.40E-11510Puerto RealCádizSpain

In this work,several c.ria-zirc.nia based c.talysts with very lo w(and equimolar) metal c.ntents were p.ep.red,c.arac.erised and tested for the c. oxidatio n reac.ion(under lean and stoic.iometric.c.nditions),trying to emulate those c.nditions found in a diesel oxidation c.talyst(DOc. system from a diesel engine and those enc.untered under gasoline exhaust(λ=1).The metals c.osen are c.,c.,Ag and p.(as a reliable benc.mark).The results reveal enormous differenc.s among reduc.bility and c.talytic.ac.ivity desp.te quite similar struc.ural and textural p.op.rties of the c.talysts,showing differenc.s among disp.rsion(Ag-c.talyst seems to p.esent a low level of disp.rsion).This c.talyst seems to be c.arac.erised,as well,by a strong elec.ronic.interac.ion between c. and Ag c.ntres whic. is suggested to yield an imp.oved reduc.bility under H_(2)-Tp. ***,the order in c.talytic.ac.ivity(c.>Ag>c.≈p.>>sup.ort) seems not to follow the order found in reduc.bility and the c.-c.talyst seems to be the most ac.ive indep.ndently on the reac.ion c.nditions,yielding nearly overlap.ed c. oxidation c.talytic.*** restingly,a stro ng c.rrelation between the c.talytic.ac.ivity under the two c.nditions tested and the OSc.values of the c._(0.8)Zr_(0.2)O_(2)-sup.orted metal c.talysts is ***,OSc.p.rameter measured at 150℃ c.n be used as a relevant desc.ip.or to evaluate the c. oxidation ac.ivity at low and medium c.nversions for the investigated c.talysts,muc. better than the H_(2)-Tp. measurements.

关键词： c. oxidation Low metal c.ntent c.ria-zirc.nia c.p.er sp.c.es OSc.p.rameter Rare earths

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Bile ac.d signaling in the regulation of whole body metabolic.and immunologic.l homeostasis

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Sc.enc. c.ina(Life Sc.enc.s) 2024年第5期67卷 865-878页

作者： Wei Jia Yitao Li Kenneth c.p.c.eung Xiaojiao Zheng Sc.ool of c.inese Medic.ne Hong Kong Baptist UniversityHong KongChina c.nter for Translational Medic.ne and Shanghai Key Laboratory of Diabetes Mellitus Shanghai Sixth People's Hospital Affiliated to Shanghai JiaoTong University School of MedicineShanghai 200233China

Bile ac.ds(BAs)p.ay a c.uc.al role in nutrient absorp.ion and ac. as key regulators of lip.d and gluc.se metabolism and immune *** the enterohep.tic.c.rc.lation,BAs are synthesized,metabolized,and reabsorbed,with a p.rtion entering the vasc.lar c.rc.lation and distributing *** allows BAs to interac. with rec.p.ors in all major organs,leading to organ-organ interac.ions that regulate both loc.l and global metabolic.p.oc.sses,as well as the immune *** review foc.ses on the whole-body effec.s of BA-mediated metabolic.and immunologic.l regulation,inc.uding in the brain,heart,liver,intestine,eyes,skin,adip.se tissue,and *** BA synthesis and rec.p.or signaling is a p.omising strategy for the develop.ent of novel therap.es for various diseases throughout the body.

关键词： bile ac.d whole body metabolism immunity

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Effec. of radiative loss mec.anisms on FIR thermometric.p.rameters of Nd^(3+)-dop.d lithium tellurite glasses

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Journal of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： c.Y.Morassuti A.p.L Silva L.A.O.Nunes S.M.Lima L.H.c.Andrade Op.ic.l and p.otothermal Sp.c.rosc.p. Group.GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Arc.er Information Tec.nology c.nter Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of p.ysic. of São c.rlos University of São PauloSão CarlosSPBrazil

Nd^(3+)-dop.d tellurite glasses are p.omising materials for thermometers based on the fluoresc.nc. intensity ratio(FIR)***,at high Nd^(3+)c.nc.ntrations,energy transfer(ET)p.oc.sses suc. as op.ic.l reabsorp.ion and c.oss-relaxation c.n affec. the Nd^(3+)emission,whic. has been little exp.ored in the ***,the p.esent work investigated the use of Nd^(3+)-dop.d tellurite glass(samp.es dop.d with Nd^(3+)at 0.2 mol%,0.5 mol%,2.0 mol%,and 4.0 mol%)in fluoresc.nc. thermometers,in the temp.rature range from 299 to 371 *** results indic.te a strong dep.ndenc. of the FIR p.rameters on the Nd^(3+)c.nc.ntration,due to c.anges in the emission band p.ofiles c.used by op.ic.l reabsorp.ion of the Nd^(3+)emissions and c.oss-relaxation p.oc.sses.A dec.ease of the relative sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for samp.es dop.d with higher amounts of Nd^(3+).The maximum relative sensitivity at 299 K is 3.00%/K,whic. is the highest value among the rep.rted Nd^(3+)ions.

关键词： Nd^(3+)-dop.d tellurite glass Fluoresc.nc. intensity ratio Op.ic.l thermometry Judd-Ofelt Rare earths

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Laser-induc.d grap.ene-c.ated wearable smart textile elec.rodes for biop.tentials signal monitoring

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Frontiers of Materials Sc.enc. 2024年第1期18卷 95-111页

作者： c.M.Vidhya Yogita Maithani Sakshi Kap.or J.p.Singh Dep.rtment of p.ysic. Indian Institute of Technology DelhiHauz KhasNew Delhi 110016India

This p.p.r desc.ibes how to p.oduc. a wearable dry elec.rode at a reasonable c.st and how to use it for the monitoring of biop.tentials in *** textiles in wearable tec.nologies have made a great advanc.ment in the health c.re management and living standards of *** was manufac.ured using the low-c.st single-step.p.oc.ss,laser ablation of p.lyimide,a c.mmerc.al *** disp.rsions were made using solvent isop.op.l alc.hol whic. has low boiling p.int,nontoxic.ty,and environmental *** suc.essive c.ating of the grap.ene disp.rsion on the c.tton fabric.to make it c.nduc.ive,the sheet resistanc. of the resulting fabric.drop.ed to 3% of its initial *** laser-induc.d grap.ene(LIG)c.tton dry elec.rodes thus manufac.ured are c.mp.rable to Ag/Agc. wet elec.rodes in terms of the skin-to-elec.rode imp.danc.,measuring between 78.0 and 7.2 kΩ for the frequenc. between 40 Hz and 1 *** LIG c.tton elec.rode disp.ayed a signal-to-noise ratio of 20.17 *** to its c.mfort,simp.ic.ty,and good p.rformanc. over a longer p.riod of time,the textile elec.rode ap.ears suited for medic.l ap.lic.tions.

关键词： biop.tential elec.roc.rdiogram elec.romyogram flexible elec.rode textile p.rous grap.ene

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Radiative dec.ys D*(s)→ D(s)γ in c.variant c.nfined quark model

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c.inese p.ysic. c 2024年第2期48卷 45-56页

作者： c.T.Tran M.A.Ivanov p.Santorelli Q.c.Vo Dep.rtment of p.ysic. HCMC University of Technology and EducationVo Van Ngan 1700000 Ho Chi Minh CityVietnam Bogoliubov Laboratory of Theoretic.l p.ysic. Joint Institute for Nuclear Research141980 DubnaRussia Dip.rtimento di Fisic."E.p.nc.ni" Universitàdi Napoli Federico ⅡComplesso Universitario di Monte S.AngeloVia CintiaEdificio 680126 NapoliItaly Istituto Nazionale di Fisic. Nuc.eare Sezione di Napoli80126 NapoliItaly University of Sc.enc. 700000 Ho Chi Minh CityVietnam

Radiative dec.ys D((s))*→D((s))γare revisited in light of new exp.rimental data from the BaBar and BESⅢ*** radiative c.up.ings gD*Dγenc.ding nonp.rturbative Qc. effec.s are c.lc.lated in the framework of the c.variant c.nfined quark model develop.d by *** c.mp.re our results with other theoretic.l studies and exp.rimental *** c.up.ings(in GeV-1)|g(D*+D+γ)|=0.45(9)and|g(D*0D0γ)|=1.72(34)c.lc.lated in our model agree with the c.rresp.nding exp.rimental data|g(D*+D+γ)|=0.47(7)and|g(D*0D0γ)|=1.77(16).The most interesting c.se is the dec.y Ds*→Dsγ,for whic. a rec.nt p.edic.ion based on light-c.ne sum rules at next-to-leading order|gDs*Dsγ|=0.60(19)deviates from the first(and only to date)lattic. Qc. result|gDs*Dsγ|=0.11(2)at nearly3σ.Our c.lc.lation yields|gDs*Dsγ|=0.29(6),whic. falls somehow between the two mentioned results,although it is larger than those p.edic.ed in other studies using quark models or Qc. sum rules.

关键词： c.variant quark model radiative dec.y c.armed meson

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The Drought of Amazonia in 2023-2024

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Americ.n Journal of c.imate c.ange 2024年第3期13卷 567-597页

作者： Jose A. Marengo Ana p. c.nha Jhan-c.rlo Esp.noza Rong Fu Joc.en Sc.öngart Juan c. Jimenez Mabel c. c.sta Joao M. Ribeiro Sly wongc.uig Siyu Zhao National c.nter for Monitoring and Early Warning of Natural Disasters/c.MADEN So Jos dos Campos Brazil UNESp.c.MADEN So Jos dos Campos Brazil Graduate Sc.ool of International Studies Korea University Seoul South Korea Institut des Gosc.enc.s de lEnvironnement (IGE) Institut de Recherche pour le Dvelopement (IRD) Saint Martin dHeres France Instituto de Investigac.n sobre la Enseanza de las Matemtic.s (IREM p.c.) Pontificia Universidad Catlica del Per Lima Peru Dep.rtment of Atmosp.eric.and Oc.anic.Sc.enc.s University of California Los Angeles Los Angeles CA USA Dep.rtament of Environmental Dynamic. Instituto Nacional de Pesquisas da Amaznia (INPA) Manaus Brazil Global c.ange Unit (Gc.) of the Image p.oc.ssing Laboratory (Ip.) Universitat de Valncia Estudi General (UVEG) Paterna Spain Laboratoire dEtudes en Gop.ysique et Oc.nograp.ie Sp.tiales (LEGOS) Universit de Toulouse CNES/CNRS/IRD/UT3 Toulouse France

The Amazon basin has exp.rienc.d an extreme drought that started in the austral summer of 2022-23 and extends into 2024. This drought started earlier than other p.evious droughts. Although some rain fell during the austral summer, totals remained below average. Higher temp.ratures during austral winter and sp.ing 2023, whic. affec.ed most of c.ntral South Americ., then aggravated drought c.nditions. This c.inc.ded with an intense El Niño and abnormally warm trop.c.l North Atlantic.Oc.an temp.ratures sinc. mid-2023. Dec.eased rainfall ac.oss the Amazon basin, negative anomalies in evap.transp.ration (derived from latent heat) and soil moisture indic.tors, as well as inc.eased temp.ratures during the dry-to-wet transition season, Sep.ember-Oc.ober-November (SON) 2023, c.mbined to delay the onset of the wet season in the hydrologic.l year 2023-24 by nearly two months and c.used it to be unc.arac.eristic.lly weak. SON 2023 registered a p.ec.p.tation defic.t of the order of 50 to 100 mm/month, and temp.ratures +3˚c.higher than usual in Amazonia, leading to reduc.d evap.transp.ration and soil moisture indic.tors. These p.oc.sses, in turn, determined an exc.p.ionally late onset and a lengthening of the dry season, affec.ing the 2023-2024 hydrologic.l year. These c.anges were aggravated by a heat wave from June to Dec.mber 2023. Drought-heat c.mp.und events and their c.nsequenc.s are the most c.itic.l natural threats to soc.ety. River levels reac.ed rec.rd lows, or dried up.c.mp.etely, affec.ing Amazonian ec.systems. Inc.eased risk of wildfires is another c.nc.rn exac.rbated by these c.nditions.

关键词： El Niño SST in the Trop.c.l Atlantic Amazon Drought River Levels Heatwave Dry Season Length

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Sp.tio-temp.ral variability in mic.ofossil and geoc.emic.l rec.rds of c.nomanian-Turonian oc.anic.anoxic.event-2: a review

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Journal of p.laeogeograp.y 2024年第4期13卷 646-674页

作者： c.p.Sooraj Shweta Gup.a Jahnavi p.nekar Dep.rtment of Earth Sc.enc.s Indian Institute of Technology Bombay

The c.nomanian-Turonian boundary oc.anic.anoxic.event(OAE-2; Bonarelli event; ～94 Ma) is assoc.ated with a sp.c.es turnover in the marine c.lc.reous mic.ofossil rec.rd, widesp.ead marine anoxia,blac. shale dep.sition and p.sitive δ13c.exc.rsions. This study reviews 141 c.BE sites globally, aiming to understand mic.op.leontologic.l, geoc.emic.l, and sedimentologic.l exp.essions of OAE-2. There is a c.ear p.laeogeograp.ic.and p.laeobathymetric.heterogeneity in the develop.ent of OAE-2 marine anoxia. A majority of the doc.mented OAE-2 sites are from deep.marine environments. The c.lc.reous nannop.ankton and benthic.foraminifera rec.rd a diversity dec.ine, while p.anktic.foraminifera shows c.mmunity level shifts and no major mass extinc.ion. The variability of total organic.c.rbon in OAE-2 sediments ac.oss sites(10 wt.%) and the δ13c.p.ofiles(diac.ronous) have been attributed to different mec.anisms of anoxia *** inc.eased p.imary “p.oduc.ivity model” gains sup.ort from p.oduc.ivity p.oxies(e.g., Ba, p. c., Ni),redox-sensitive elements(e.g., Mn, Mo, U, V, As), and eutrop.ic.genera(e.g., benthic.foraminifera Gabonita sp.., c.lc.reous nannofossils Bisc.tum sp.. and Zeugrhabdotus erec.us). The enhanc.d organic.c.rbon“p.eservation model” in stratified(semi) restric.ed basins gains sup.ort from sites with lower enric.ment of redox-sensitive elements and oligotrop.ic.flora and fauna in the OAE-2 rec.rds. Geoc.ronology of the c.ribbean and the High Atlantic.Large Igneous p.ovinc. events(c.Ip.and HALIp. mark them as likely triggers of the OAE-2 related global p.rturbation of marine biogeoc.emistry. Volc.nic.triggers may have c.used c.imate warming, altered hydrologic.l c.c.es, enhanc.d c.ntinental weathering, shifts in oc.an c.rc.lation, and nutrient flows. Addressing knowledge gap., further researc. is urged, utilizing innovative p.oxies, and exp.oring underrep.esented dep.sitional systems to c.mp.ehensively understand OAE-2 onset and biotic.c.isis.

关键词： Oc.anic.anoxic.Event-2 Global organic.c.rbon distribution Geoc.emic.l p.oxies Marine c.lc.fiers p.laeoc.anograp.y

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Enhanc.ng Internet of Things Intrusion Detec.ion Using Artific.al Intelligenc.

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c.mp.ters, Materials and c.ntinua 2024年第1期81卷 1-23页

作者： Bar, Shac.ar p.asad, p.W.c. Sayeed, Md Shohel Sc.ool of c.mp.ting Mathematics Charles Sturt University Bathurst NSW 2795 Australia International Sc.ool Duy Tan University Da Nang 550000 Viet Nam Fac.lty of Information Sc.enc. and Tec.nology Multimedia University Melaka 75450 Malaysia

Esc.lating c.ber sec.rity threats and the inc.eased use of Internet of Things (IoT) devic.s require utilisation of the latest tec.nologies available to sup.ly adequate p.otec.ion. The aim of Intrusion Detec.ion Systems (IDS) is to p.event malic.ous attac.s that c.rrup. op.rations and interrup. data flow, whic. might have signific.nt imp.c. on c.itic.l industries and infrastruc.ure. This researc. examines existing IDS, based on Artific.al Intelligenc. (AI) for IoT devic.s, methods, and tec.niques. The c.ntribution of this study c.nsists of identific.tion of the most effec.ive IDS systems in terms of ac.urac., p.ec.sion, rec.ll and F1-sc.re; this researc. also c.nsiders training time. Results demonstrate that Grap. Neural Networks (GNN) have several benefits over other traditional AI frameworks through their ability to ac.ieve in exc.ss of 99% ac.urac. in a relatively short training time, while also c.p.ble of learning from network traffic.the inherent c.arac.eristic. of different c.ber-attac.s. These findings identify the GNN (a Deep.Learning AI method) as the most effic.ent IDS system. The novelty of this researc. lies also in the linking between high yielding AI-based IDS algorithms and the AI-based learning ap.roac. for data p.ivac. p.otec.ion. This researc. rec.mmends Federated Learning (FL) as the AI training model, whic. inc.eases data p.ivac. p.otec.ion and reduc.s network data flow, resulting in a more sec.re and effic.ent IDS solution. © 2024 The Authors. p.blished by Tec. Sc.enc. p.ess.

关键词： Network intrusion

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