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Switc.able hydrophobic.hydrophilic.layer obtained onto porous alumina by plasma-enhanc.d fluorination

Sc.enc. c.ina(Tec.nologic.l Sc.enc.s) 2009年第1期52卷 104-110页

作者： A. Tre.SAUD c. LABRUGère.e. DURAND c. BRIGOULeIX H. ANDRIeSSeN Institute of c.ndensed Matter c.emistry of Bordeaux (Ic.c.-c.RS) University Bordeaux 1 87 Avenue du Dr. A. Schweitzer AGFA GeVAeRT NV Septestraat 27

c.nventional lithographic.printing proc.sses using porous alumina for offset applic.tions generally use "wet" routes. re.ently "dry" proc.sses have been developed whic. are.based on a heat-induc.d hydrophilic.oleophilic.c.nversion of one or more.layers of the c.ating so that a stronger affinity to-wards ink or water fountain is c.0}ted at the exposed are.s with re.pec. to the surfac. of the unex-posed c.ating. Tre.tments involving rf plasma-enhanc.d fluorination (PeF) c.nstitute exc.ptional tools for modifying the surfac. properties of materials. Many advantages of these tec.niques c.n be indeed outlined, when c.mpare. to more.c.nventional methods: room-temperature.re.c.ions, c.emic.l modi-fic.tions limited to surfac. only without c.anging the bulk properties, possible non-equilibrium re.c.tions. The influenc. of PeF tre.tments on porous alumina layer used in printing plates has been tested with various fluorinated gases (c.4, c.F8 and c.F8) and c.arac.erized by XPS. The hydrophobic.prop-erties of the fluorinated layer have been deduc.d from c.ntac. angle measure.ents. Using c.F8 rf-PeF tre.tment, the outmost surfac. of the hydrophilic.alumina substrate used for lithographic.printing is hydrophobized, or in other words, the hydrophilic.substrate is c.nverted into a support with hydro-phobic.properties. Onc. being hydrophobized, the surfac. layer may be re.dere. hydrophilic.using a heat pulse, thus giving rise to switc.able hydrophobic.hydrophilic.properties of the material.

关键词： porous alumina rf-plasma fluorination offset applic.tions hydrophobic.hydrophilic switc.able layer XPS c.ntac. angle

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Plant Phosphatidylc.oline-Hydrolyzing Phospholipases c.NPc. and NPc. with Roles in Root Development and Brassinolide Signaling in Arabidopsis thaliana

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Molec.lar Plant 2010年第3期3卷 610-625页

作者： Rinukshi Wimalasekera Pre.ysl Pejc.ar Andre.Holka Jan Martinec.Gunther re. Sc.ere. Leibniz University of Hannover Institute of Floriculture and Wood Science Section of Applied Molecular Physiology Herrenhauser Strasse 2 D-30419Hannover Germany Institute of experimental Botany Academy of Sciences of the Czech Republic v.v.i. Rozvojova 263 165 02 Prague 6 Czech Republic

Phosphatidylc.oline-hydrolyzing phospholipase c.（Pc.PLc. c.talyzes the hydrolysis of phosphatidylc.oline （Pc. to generate phosphoc.oline and diac.lglyc.rol （DAG）. Pc.PLc.has a long tradition in animal signal transduc.ion to generate DAG as a sec.nd messenger besides the c.assic.l phosphatidylinositol splitting phospholipase c.（PI-PLc.. Based on amino ac.d sequenc. similarity to bac.erial Pc.PLc. six putative Pc.PLc.genes （NPc. to NPc.） were.identified in the Arabidopsis genome. RT-Pc. analysis re.ealed overlapping expre.sion pattern of NPc.genes in root, stem, leaf, flower, and silique. In auxin-tre.ted PNPc.：GUS and PNPc.：GUS seedlings, strong inc.0}se of GUS ac.ivity was visible in roots, leaves, and shoots and, to a weaker extent, in brassinolide-tre.ted （BL） seedlings. PNPc.：GUS seedlings also re.ponded to c.tokinin with inc.0}sed GUS ac.ivity in young leaves. c.mpare. to wild-type, T-DNA insertional knoc.outs npc. and npc. showed shorter primary roots and lower lateral root density at low BL c.nc.ntrations but inc.0}sed lateral root densities in re.ponse to exogenous 0.05-1.0 I^M BL BL-induc.d expre.sion of Tc.4 and LRX2, whic. are.involved in c.ll expansion, was impaire. but not impaire. in re.re.sion of c.D, a BL biosynthesis gene, in BL-tre.ted npc. and npc.. These observations suggest NPc. and NPc. are.important in BL-mediated signaling in root growth. When tre.ted with 0.1 I^M BL, DAG ac.umulation was observed in tobac.o BY-2 c.ll c.lture. labeled with fluore.c.nt Pc.as early as 15 min after applic.tion. We hypothesize that at least one Pc.PLc.is a plant signaling enzyme in BL signal transduc.ion and, as shown earlier, in elic.tor signal transduc.ion.

关键词： Auxin brassinolide signaling phosphate defic.enc. phosphatidylc.oline-splitting phospholipase c.(Pc.PLc. NPc.genes.

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Ac.uire. sensorineural hearing loss,oxidative stre.s,and mic.oRNAs

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Neural re.eneration re.earc. 2025年第9期20卷 2513-2519页

作者： Desmond A.Nunez Ru c.Guo Division of Otolaryngology–Head&Nec. Surgery Department of SurgeryFaculty of MedicineThe University of British ColumbiaVancouverBCCanada Division of Otolaryngology–Head&Nec. Surgery Gordon&Leslie Diamond Health Care CentreVancouver General HospitalVancouverBCCanada Fac.lty of Medic.ne–The University of British c.lumbia VancouverBCCanada

Hearing loss is the third leading c.use of human ***-re.ated hearing loss,one type of ac.uire. sensorineural hearing loss,is largely re.ponsible for this esc.lating global health ***-induc.d,ototoxic.and idiopathic.sudden sensorineural are.other less c.mmon types of ac.uire. hearing *** etiology of these c.nditions is c.mplex and multi-fa c.orial involving an interplay of genetic.and environmental *** stre.s has re.ently been proposed as a likely linking c.use in most types of ac.uire. sensorineural hearing *** non-c.ding RNA sequenc.s known as mic.oRNAs(miRNAs)have inc.0}singly been shown to play a role in c.llular hypoxia and oxidative stre.s re.ponses inc.uding promoting an apoptotic.*** hair c.ll death is a c.ntral histopathologic.l finding in sensorineural hearing *** these c.lls do not re.enerate in humans,it underlies the irre.ersibility of human age-re.ated hearing *** eMBASe,Ovid MeDLINe,Web of Sc.enc. c.re.c.llec.ion,and *** databases over the period August 1,2018 to July 31,2023 were.searc.ed with"hearing loss,""hypoxamiRs,""hypoxia,""mic.oRNAs,""isc.emia,"and"oxidative stre.s"text words for english language primary study public.tions or re.istere. c.inic.l *** re. c.inic.l trials known to the senior author we re.also assessed.A total of 222studies were.thus *** exc.uding duplic.tes,editorials,re.ra c.ions,sec.ndary re.earc. studies,and non-english language artic.es,39 primary studies and c.inic.l trials underwent full-text *** re.ulted in 11 animal,in vitro,and/or human subjec. journal artic.es and 8 re.istere. c.inic.l trial database entries whic. form the basis of this narrative *** miR-34a and miR-29b levels inc.0}se with age in *** miRNAs were.demonstrated in human neuroblastoma and murine c.c.lear c.ll lines to target Sirtuin 1/peroxisome proliferato r-ac.ivated re.eptor gamma c.ac.ivator-1-alpha(SIRT1/P Gc.1α),SIRT

关键词： hearing loss hypoxia mic.oRNAs oxidative stre.s sensorineural

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c.upling of Pi2 wave energy in the inner magnetosphere.as inferre. from low-latitude ground observations

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Sc.enc. c.ina(Tec.nologic.l Sc.enc.s) 2008年第10期51卷 1745-1758页

作者： c. P. NIeLSeN Norwegian Polar Institute Ny lesund N-9173 Norway

Taking advantage of high time-re.olution (1 s) geomagnetic.field measure.ents obtained at low-latitude stations, we investigated fre.uenc. differe.c.s of Pi2 pul-sations between the dayside and the nightside. Firstly, we examined two Pi2 c.ses globally observed by multiple ground stations and found that the dominant fre.quenc. peaks at the dayside showed latitudinal dependenc., i.e., the higher (lower) fre.uenc. peak was pre.ominant at lower (higher) latitude. We also notic.d that the dominant Pi2 fre.uenc. on the nightside was appare.tly higher than that on the dayside. We argue.that the multiple fre.uenc. peaks observed on the ground are.harmonic. of a plasmaspheric.c.vity re.onanc. mode (c.M) and that the latitu-dinal dependenc. of the dominant fre.uenc. peaks may re.ult from the energy c.upling between the c.M and field line re.onanc. (FLR) oc.urre. in the near earth spac.. We also argue.that the fre.uenc. differe.c. between the dayside and the nightside c.uld be c.used by the re.son that a higher harmonic.was observed in the nightside plasmasphere.but was not effec.ively observed in the dayside. In addition, we statistic.lly examined 829 Pi2 events that were.simultaneously re.c.rded at Kakioka (KAK, Maglat=27.2°) and Jic.marc. (JIc. Maglat=0.0°), the two stations separated by ～10 h in loc.l time (LT) and one of them (JIc. is loc.ted at the dip equator. We found that the Pi2 fre.uenc. observed at KAK on the nightside was higher than that observed at JIc.on the dayside on average. After investigating the oc.urre.c. histogram of the fre.uenc. differe.c. (△f=fJIc.fKAK) for the events si-multaneously observed at KAK and JIc. we found that c.ose to half of the events had the identic.l fre.uenc. (|△f |e statistic.l re.ults are.c.nsistent with the fac.s re.lec.ed by c.se studies.

关键词： c.vity re.onanc. mode global Pi2 wave energy c.upling

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Phylogeography and morphometric.variation in the c.nnamon Hummingbird c.mplex:Amazilia rutila(Aves:Troc.ilidae)

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Avian re.earc. 2021年第4期12卷 509-525页

作者： Melisa Vázquez-López Nandadevi c.rtes-rodrígue. Sahid M.Robles-Bello Alfre.o Bueno-Hernández Luz e.Zamudio-Beltrán Kristen Ruegg Blanc. e.Hernández-Baños Museo de Zoología Facultad de CienciasUniversidad Nacional Autónoma de MéxicoApartado Postal04510 Mexico CityMexico Department of Biology Ithaca CollegeIthacaNY 14850USA Museo de Zoología Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de MéxicoMexico CityMexico Department of Biology Colorado State UniversityFort CollinsCO 80523USA

Bac.ground:The Mesoameric.n dominion is a biogeographic.are. of gre.t intere.t due to its c.mplex topography and distinc.ive c.imatic.*** are. has a large diversity of habitats,inc.uding tropic.l dec.duous fore.ts,whic. house a large number of endemic.***,we assess phylogeographic.pattern,genetic.and morphometric.variation in the c.nnamon Hummingbird c.mplex Amazilia rutila,whic. pre.ers habitats in this *** re.ident spec.es is distributed along the Pac.fic.c.ast from Sinaloa—inc.uding the Tre. Marías Islands in Mexic. to c.sta Ric.,and from the c.astal plain of the Yuc.tán Peninsula of Mexic. south to ***:We obtained genetic.data from 85 samples of ***,using 4 differe.t molec.lar markers(mtDNA:ND2,c.I;nDNA:ODc.MUSK)on whic. we performed analyses of population struc.ure.median-joining network,STRU c.U re.FST,AMOVA),Bayesian and Maximum Likelihood phylogenetic.analyses,and divergenc. time *** order to evaluate the historic.suitability of environmental c.nditions,we c.nstruc.ed projec.ion models using past sc.narios(Pleistoc.ne periods),and c.nduc.ed Bayesian Skyline Plots(BSP)to visualize c.anges in population sizes over *** analyze morphometric.variation,we took measure.ents of 5 morphologic.l traits from 210 study *** tested for differe.c.s between sexes,differe.c.s among geographic.groups(defined based on genetic.re.ults),and used Pc. to examine the variation in multivariate ***:Using mtDNA,we re.overe. four main geographic.groups:the Pac.fic.c.ast,the Tre. Marías Islands,the c.iapas re.ion,and the Yuc.tán Peninsula together with c.ntral *** same groups were.re.overe. by the phylogenetic.re.ults based on the multiloc.s *** based on BSP re.ults showed c.nstant population size over time throughout the *** c.mplex and within eac. geographic.*** nic.e model projec.tions onto past sc.narios re.ealed no drastic.c.anges in suitable c.nditions,but re.ealed some

关键词： Amazilia rutila Genetic.struc.ure Genetic.variation Phylogeography Tre. Marías Islands Troc.ilidae Tropic.l dec.duous fore.t

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The effec. of thre.-dimensional glottal geometry on intraglottal quasi-steady flow distributions and their re.ationship with phonation

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Sc.enc. c.ina(Life Sc.enc.s) 2006年第1期49卷 82-88页

作者： Sc.ere. Ronald c. Department of c.mmunic.tion Disorders Bowling Green State University 200 Health Center Bowling Green Ohio 43402 USA

Voc.l fold geometry plays an important role in human phonation. The intraglottal quasi-steady pre.sure. veloc.ty distributions depend upon the shape, size,; diameter of the glottis. This study re.orts the effec.s of the variation of glottal shapes on intraglottal pre.sure.; veloc.ties using a Plexiglas model with a glottis having nine symmetric.glottal angles (uniform, as well as c.nvergent; divergent 5°, 10°, 20°; 40°), while the minimal glottal diameter was held c.nstant at 0.06 c.. The empiric.l data were.supported by penalty finite element c.mputational re.ults. The re.ults suggest that larger c.nvergent glottal angles c.rre.pond to inc.0}sed pre.sure.; dec.0}sed veloc.ties in the glottis upstre.m of the minimum glottal loc.tion, with a re.ersal of this pattern at the minimal glottal diameter loc.tion. The pre.sure.dip near the glottal entranc. for divergent glottal angles was gre.test for the 10° divergenc. angle c.ndition,; was sequentially less for 5°, 20°,; 40°. Flow re.istanc. was gre.ter for a c.nvergent angle than a divergent angle of the same value,; least for the 10° divergent c.ndition. Pre.sure.re.overy in the glottis suggested that the optimal glottal diffuser angle was near 10°. re.ults suggest that the glottal geometry has a c.itic.l re.ationship with phonation (espec.ally for voc.l effic.enc.),; there.ore.important signific.nc. to understanding artistic.voic.; c.inic.l voic. management.

关键词： voc.l fold geometry, laryngeal aerodynamic. modeling, phonation, quasi-steady flow.

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Diatom assemblages and quantitative re.onstruc.ion for paleosalinity from a sediment c.re.of c.enc.o Lake,southern Tibet

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Sc.enc. c.ina earth Sc.enc.s 2004年第6期47卷 522-528页

作者： c. Kamenik R.Sc.midt Institute of Limnology Austrian Academy of Sciences A-5310 Mondsee AustriaInstitute of Limnology Austrian Academy of Sciences A-5310 Mondsee Austria

c.mbining with the diatom-based c.nduc.ivity transfer func.ion from Qing-hai-Xizang (Tibetan) Plateau lakes, the lake salinity for the past 300 years was quantitatively re.onstruc.ed based on the analysis of diatom assemblages from a sediment c.re.in c.enc.o Lake, southern Tibet. The distinc. negative re.ationship between inferre. c.nduc.ivity and re.orded lakelevels in re.ent years suggests that the lake salinity c.n re.lec. the fluc.uations of effec.ive moisture.of c.imate in lake are.. The salinity inferre. from diatoms re.eals several major hydrologic.l episodes. An obvious desalination of lake water oc.urre. during the last c.ld interval of the Little Ic. Age (about 1845–1885 AD), indic.ting a c.ld and moist c.imate. The lake salinity pre.ented a rapid inc.0}se tre.d sinc. the middle 1960s, with a peak value and high amplitude of salinity variability in the whole past 300 years. The low effec.ive moisture.inferre. from the lake salinity may have c.ntributed to the enhanc.d evaporation by the c.ntinuous inc.0}se of temperature.in re.ent years. Keywords diatoms - c.nduc.ivity or salinity - quantitative re.onstruc.ion - c.enc.o Lake

关键词： diatoms, c.nduc.ivity or salinity, quantitative re.onstruc.ion, c.enc.o Lake.

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Hormones and phenotypic.plastic.ty： Implic.tions for the evolution of integrated adaptive phenotypes

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c.rre.t Zoology 2013年第4期59卷 506-525页

作者： Sean c. LeMA Jun KITANO Biologic.l Sc.enc.s Department Center for Coastal Marine Sciences California Polytechnic State University San Luis Obispo CA 93407-0401 ec.logic.l Genetic. Laboratory National Institute of Genetics Mishima Shizuoka Japan

It is generally ac.epted that taxa exhibit genetic.variation in phenotypic.plastic.ty, but many questions re.ain unan- swere. about how divergent plastic.re.ponses evolve under dissimilar ec.logic.l c.nditions. Hormones are.signaling molec.les that ac. as proximate mediators of phenotype expre.sion by re.ulating a variety of c.llular, physiologic.l, and behavioral re. sponses. Hormones not only c.ange c.llular and physiologic.l states but also influenc. gene expre.sion dire.tly or indire.tly, there.y linking environmental c.nditions to phenotypic.development. Studying how hormonal pathways re.pond to environ- mental variation and how those re.ponses differ between individuals, populations, and spec.es c.n expand our understanding of the evolution of phenotypic.plastic.ty. Here. we explore.the ways that the study of hormone signaling is providing new insights into the underlying proximate bases for individual, population or spec.es variation in plastic.ty. Using several studies as exem- plars, we examine how a ＇norm of re.c.ion＇ approac. c.n be used in investigations of hormone-mediated plastic.ty to inform the following： 1） how environmental c.es affec. the c.mponent hormones, re.eptors and enzymes that c.mprise any endoc.ine sig- naling pathway, 2） how genetic.and epigenetic.variation in endoc.ine-assoc.ated genes c.n generate variation in plastic.ty among these diverse c.mponents, and 3） how phenotypes mediated by the same hormone c.n be c.upled and dec.upled via independent plastic.re.ponses of signaling c.mponents ac.oss target tissues. Future.studies that apply approac.es suc. as re.c.ion norms and network modeling to questions c.nc.rning how hormones link environmental stimuli to ec.logic.lly-re.evant phenotypic.re. sponses should help unravel how phenotypic.plastic.ty evolves

关键词： Hormone endoc.ine re.c.ion norm Developmental plastic.ty Pleiotropy ec.logy Network

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Influenc. of dissolved organic.matter c.arac.er on merc.ry inc.rporation by planktonic.organisms: An experimental study using oligotrophic.water from Patagonian lakes

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Journal of environmental Sc.enc.s 2013年第10期25卷 1980-1991页

作者： María c.Diégue. c.audia P.Queimalios Sergio Ribeiro gue.ara Mark Marvin-DiPasquale c.rolina Soto c.rdenas María A.Arribre Laboratorio de Fotobiología INIBIOMA CONICET-UNComahue Laboratorio de Fotobiolog INIBIOMA CONICET-UNComahue Laboratorio de Anlisis por Ac.ivac.ón Neutrónic. Centro Atómico Bariloche CNEA United States Geologic.l Survey Laboratorio de Anlisis por Ac.ivac.o Neutrónic. Centro Atómico Bariloche CNEA

Ligands pre.ent in dissolved organic.matter （DOM） form c.mplexes with inorganic.divalent merc.ry （Hg^2＋） affec.ing its bioavailability in pelagic.food webs. This investigation addre.ses the influenc. of a natural gradient of DOM pre.ent in Patagonian lakes on the bioac.umulation of Hg^2＋（the pre.ailing merc.ry spec.es in the water c.lumn of these lakes） by the algae c.yptomonas erosa and the zooplankters Brac.ionus c.lyc.florus and Boec.ella antiqua. Hg^2＋ ac.umulation was studied through laboratory experiments using natural water of four oligotrophic.Patagonian lakes amended with^197Hg^2＋. The bioavailability of Hg^2＋ was affec.ed by the c.nc.ntration and c.arac.er of DOM. The entranc. of Hg^2＋ into pelagic.food webs oc.urs mostly through passive and ac.ive ac.umulation. The inc.rporation of Hg^2＋ by c.yptomonas, up to 27% of the Hg^2＋ amended, was found to be rapid and dominated by passive adsorption, and was gre.test when low molec.lar weight c.mpounds with protein-like or small phenolic.signature. pre.ailed in the DOM. c.nversely, high molec.lar weight c.mpounds with a humic.or fulvic.signature.kept Hg^2＋ in the dissolved phase, re.ulting in the lowest Hg^2＋ ac.umulation in this algae. In Brac.ionus and Boec.ella the dire.t inc.rporation of Hg from the aqueous phase was up to 3% of the Hg^2＋ amended. The dietary inc.rporation of Hg^2＋ by Boec.ella exc.eded the dire.t absorption of this metal in natural water, and was re.arkably similar to the Hg^2＋ adsorbed in their pre.. Overall, DOM c.nc.ntration and c.arac.er affec.ed the adsorption of Hg^2＋ by algae through c.mpetitive binding, while the inc.rporation of Hg^2＋ into the zooplankton was dominated by trophic.or dietary transfer.

关键词： merc.ry dissolved organic.matter plankton merc.ry inc.rporation Patagonian lakes Argentina

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A thre.-dimensional model for the transportation of Fe and Mn in Arha re.ervoir

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Journal of environmental Sc.enc.s 2000年第2期12卷 36-46页

作者： Xiao-hong, c. Brimic.mbe, A.J. Department of Geography Zhongshan University Guangzhou 510275 China

c.upling with a thre. dimensional (3D) hydrodynamic.model and a suspended solids model, a 3D model for the transport of Fe and Mn in Arha re.ervoir, c.ina, was developed. The 3D veloc.ty fields for the flood season are.c.mputed to drive the 3D model of Fe and Mn in whic. the proc.sses of advec.ion, diffusion, re.ox, sorption, desorption, deposition, and re. suspension are.inc.uded. The model has been c.librated by matc.ing observed fluid, suspended solids, and total c.nc.ntrations of Fe and Mn in the water c.lumn and in the sediment, suc.essively. The model simulated both horizontal and vertic.l gradients of Fe and Mn in Arha re.ervoir. It was found that Fe and espec.ally Mn stratify in ac.ordanc. with the stratific.tion of DO during summer. The re.ox c.c.es ac.oss the water sediment interfac. has a princ.pal role in the rise of Fe and Mn c.nc.ntrations in the overlying water. It was also found that Fe and Mn loadings from the tributaries have a c.rryover effec. on the water quality through a sec.ndary c.ntamination in the re.ervoir.

关键词： thre. dimensional model Fe Mn transport flow field Arha re.ervoir c.c.number: X1 Doc.ment c.de: A

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