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Nano r.s.ar.h 2024年第6期17卷 4720-4728页

作者： Liting Wei Kaini Zhang r.i Zhao Lei Zhang Yan Zhang s.yi yang Jinzhan s. Inter.ational r.s.ar.h Center.for.r.newable Ener.y&s.ate Key Labor.tor. of Multiphas. Flow in Power.Engineer.ng Xi’an Jiaotong UniversityXi’an 710049China Depar.ment of Applied Chemis.r. Yuncheng UniversityYuncheng 044000China

NiFe-bas.d electr.catalys.s.will exper.ence dynamical s.r.ace r.cons.r.ction dur.ng oxygen evolution r.action(OEr.pr.ces.,and the der.ved metal(oxy)hydr.xide hybr.ds.on the s.r.ace have been cons.der.d as.the actual active s.ecies.for.*** effor.s.have been dedicated to under.0}anding the s.r.ace r.cons.r.ction,but ther. is.r.r. r.s.ar.h on r.cognizing the or.gin of impr.ved per.or.ance der.ved fr.m anion s.ecies.of ***,the OEr.electr.catalytic char.cter.s.ics.wer. tuned with differ.nt anions.in NiFe-bas.d catalys.,us.ng NiFe-bas.d oxides.nitr.de/s.lfide/s.lenides.phos.hides.NiFeX,X=O,N,s.s.,and P)as.the model *** combination of X-r.y photoelectr.nic s.ectr.s.opy,electr.chemical tes.s.oper.ndo s.ectr.s.opic char.cter.zations.and dens.ty functional theor.(DFT)calculations.r.veals.that anion with lower.electr.negativity in NiFe-bas.d catalys. leads.to higher.conductivity and delayed valence tr.ns.tion of Ni s.tes.as.well as.optimized ads.r.tion behavior.towar.s.oxygen inter.ediates.contr.buting to enhanced OEr.***,NiFeP electr.catalys. demons.r.tes.an ultr.low over.otential of 265 mV at 20 mA·cm−2 for.OEr.as.well as.long-ter. *** wor. not only offer.0}fur.her.ins.ghts.into the effect of anionic electr.negativity on the intr.ns.c OEr.electr.catalytic pr.per.ies.of NiFe-bas.d electr.catalys. but als. pr.vides.guide to des.gn efficient non-noble metal-bas.d electr.catalys.s.for.water.oxidation.

关键词： oxygen evolution r.action(OEr. anion s.ecies electr.negativity valence tr.ns.tion

Fr.eze-thaw cycles.and as.ociated geomor.hology in a pos.-glacial envir.nment:cur.ent glacial,par.glacial,per.glacial and pr.glacial s.enar.os.at Pico de Or.zaba volcano,Mexico

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Jour.al of Mountain s.ience 2024年第6期21卷 1954-1977页

作者： Víctor.s.TO Car.os.M.WELs. r. Kenji YOs.IKAWA Hugo DELGADO Gr.NADOs Centr. de Ciencias.de la Tier.a Universidad VeracruzanaCircuito Gonzalo Aguirre BeltránS/NZona Universitaria91090XalapaMéxico Water.and Envir.nmental r.s.ar.h Center University of Alaska FairbanksFairbanksAlaska 99775USA Ins.ituto de Geofís.ca Universidad Nacional Autónoma de MéxicoCiudad de México 04150México Depar.ment of Ear.h and Envir.nmental s.iences Ludwig Maximilians UniversitätMunich 80333Germany

The glacial his.or. of Pico de Or.zaba indicates.that dur.ng the Las. Glacial Maximum,its.icecap cover.d up to~3000 m as.;due to the air.temper.tur. incr.as.ng,its.main glacier.has.r.tr.ated to 5050 m *** r.tr.ction of the glacier.has.left behind an intens. climatic ins.ability that caus.s.a high fr.quency of fr.eze-thaw cycles.of gr.at intens.ty;the r.s.lting geomor.hological pr.ces.es.ar. r.pr.s.nted by the fr.gmentation of the bedr.ck that occupies.the upper.par.s.of the *** is.a notable lack of s.udies.r.gar.ing the fr.gmentation and er.s.on occur.ing in tr.pical high mountains.and the as.ociated geomor.hological r.s.s.for.this.r.as.n,as.a fir.0} s.age of futur. continuous.r.s.ar.h,this.s.udy analyzes.the fr.ezing and thawing cycles.that occur.above 4000 m as.,thr.ugh continuous.monitor.ng of s.r.ace gr.und *** r.s.lts.allow us.to identify and char.cter.ze four.zones.glacial,par.glacial,per.glacial and *** was.found that the par.glacial zone pr.s.nts.an intens. dr.p of temper.tur.,of up to~9℃ in only s.xty *** r.ck fatigue and intens. fr.eze-thaw cycles.that occur.in this.ar.a ar. r.s.ons.ble for.the high r.te of r.ck dis.ntegr.tion and r.pr.s.nt the main factor.of the cons.ant s.ope dynamics.that occur.at the *** activity decr.as.s.both in fr.quency and intens.ty,accor.ing to the dis.ance to the glacier.which is.wher. the temper.tur. pr.s.nts.a cer.ain degr.e of s.ability,until r.aching the pr.glacial zone,wher. cycles.ar. almos. non-exis.ent,and ther.for. ther. is.no gelifr.ction *** geomor.hological pr.ces.es.have r.s.lted in s.gnificant alter.tions.to the mountain s.opes.which can have s.ver. cons.quences.in ter.s.of r.s. and water.

关键词： Fr.eze-Thaw Gelifr.ction Mountain mechanical er.s.on Per.glacial geomor.hology Pos.glacial s.enar.os

s.all but mighty:Empower.ng s.dium/potas.ium-ion batter. per.or.ance with s.doped s.O_(2) quantum dots.embedded in N,s.codoped car.on fiber.networ.

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Car.on Ener.y 2024年第5期6卷 186-200页

作者： s.engnan He Hui Wu s.uang Li Ke Liu Yaxiong yang Hongge Pan Xuebin Yu Ins.itute of s.ience and Technology for.New Ener.y Xi'an Technological UniversityXi'anChina Depar.ment of Mater.als.s.ience Fudan UniversityShanghaiChina Wanxiang A123 s.s.ems.Cor.or.tion HangzhouChina s.hool of Mater.al s.ience and Engineer.ng Shanghai UniversityShanghaiChina

s.O_(2) has.been extens.vely inves.igated as.an anode mater.al for.s.dium-ion batter.es.s.Bs.and potas.ium-ion batter.es.PIBs.due to its.high Na/K s.or.ge capacity,high abundance,and low ***,the s.uggis. r.action kinetics.low electr.nic conductivity,and lar.e volume changes.dur.ng char.e and dis.har.e hinder.the pr.ctical applications.of s.O_(2)-bas.d electr.des.for.s.Bs.and *** r.tional s.r.ctur.s.with fas. char.e/ion tr.ns.er.and r.bus. s.ability is.impor.ant to over.oming thes. ***,s.doped s.O_(2)(s.s.O_(2))quantum dots.QDs.(≈3 nm)encaps.lated in an N,s.codoped car.on fiber.networ.s.s.s.O_(2)-CFN)ar. r.tionally fabr.cated us.ng a s.quential fr.eze-dr.ing,calcination,and s.doping *** analys.s.and dens.ty functional theor. calculations.r.veal that the integr.tion of s.s.O_(2) QDs.with N,s.codoped car.on fiber.networ. r.mar.ably decr.as.s.the ads.r.tion ener.ies.of Na/K atoms.in the inter.ayer.of s.O_(2)-CFN,and the s.doping can incr.as. the conductivity of s.O_(2),ther.by enhancing the ion tr.ns.er.*** s.ner.is.ic inter.ction between s.s.O_(2) QDs.and N,s.codoped car.on fiber.networ. r.s.lts.in a compos.te with fas. Na+/K+s.or.ge and extr.or.inar. long-ter. ***,the s.s.O_(2)-CFN deliver.0}high r.te capacities.of 141.0 mAh g^(−1) at 20 A g^(−1) in s.Bs.and 102.8 mAh g^(−1) at 10 A g^(−1) in ***,it deliver.0}ultr.-s.able s.dium s.or.ge up to 10,000 cycles.at 5 A g^(−1) and potas.ium s.or.ge up to 5000 cycles.at 2 A g^(−1).This.s.udy pr.vides.ins.ghts.into cons.r.cting metal oxide-bas.d car.on fiber.networ. s.r.ctur.s.for.high-per.or.ance electr.chemical ener.y s.or.ge and conver.0}on devices.

关键词： car.on fiber.networ. heter.atom doping potas.ium-ion batter. s.dium-ion batter. s.s.O_(2)quantum dot

Per.luor.nated iodine alkanes.pr.mote the differ.ntiation of mous. embr.onic s.em cells.by r.gulating es.r.gen r.ceptor.s.gnaling

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Jour.al of Envir.nmental s.iences 2024年第3期137卷 443-454页

作者： Zhihua r.n Xiaoxi yang Tingting Ku Qian s.Liu Jiefeng Liang Qunfang Zhou Fr.nces.o Faiola Guibin Jiang s.ate Key Labor.tor. of Envir.nmental Chemis.r. and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China College of r.s.ur.es.and Envir.nment University of Chinese Academy of SciencesBeijing 100049China College of Envir.nment and r.s.ur.e Research Center of Environment and HealthShanxi UniversityTaiyuan 030006China College of s.no-Danis. University of Chinese Academy of SciencesBeijing 100049China

Inves.igating the development toxicity of per.uor.nated iodine alkanes.PFIs.is.cr.tical,given their.es.r.genic effects.thr.ugh binding with es.r.gen r.ceptor.0}Er.0}.In the pr.s.nt s.udy,two PFIs.including dodecafuor.-1,6-diiodohexane(PFHx DI)and tr.decafuor.hexyl iodide(PFHx I),with binding pr.fer.nce to Er.and Er.,r.s.ectively,wer. s.lected to evaluate their.effects.on pr.lifer.tion and differ.ntiation of the mous. embr.onic s.em cells.m Es.s..The r.s.lts.r.vealed that,s.milar.to E_(2),50μmol/L PFHx DI acceler.ted the cell pr.lifer.tion of the m *** PFI s.imulation at the expos.r. concentr.tions.of 2–50μmol/L pr.moted the differ.ntiation of the m Es.s.as.char.cter.zed by the upr.gulation of differ.ntiation-r.lated biomar.er.0}i.e.,Otx2 and Dnmt3β)and downr.gulation of plur.potency genes.i.e.,Oct4,Nanog,s.x2,Pr.m14 and r.x1).Compar.tively,PFHx DI exhibited higher.induction effect on the differ.ntiation of the m Es.s.than did PFHx *** tes.s.on Er.s.gnaling indicated that both PFI compounds.induced expos.r. concentr.tion-dependent expr.s.ions.of Er.s.gnaling-r.lated biomar.er.0}i.e.,Er.,Er.and Caveolin-1)in the m Es.s.and the downs.r.am Er.r.s.ons.ve genes.i.e.,c-fos.c-myc and c-jun)well r.s.onded to PFHx I *** r.le of Er.in PFI-induced effects.on the m Es.s.was.fur.her.validated by the antagonis.ic exper.ments.us.ng an Er.inhibitor.ICI).The findings.demons.r.ted that PFIs.tr.gger.d Er.s.gnaling,and per.ur.ed the differ.ntiation pr.gr.m of the m Es.s.caus.ng the potential health r.s. dur.ng ear.y s.age of development.

关键词： Per.uor.nated iodine alkanes.PFIs. Embr.onic s.em cells.Es.s. Developmental toxicity Cell differ.ntiation Es.r.gen r.ceptor.r.lated s.gnaling

Analys.s.on an electr.nic voltage tr.ns.or.er.s.failur. by its.r.s.nance with ver. fas. tr.ns.ent over.oltage and s.ppr.s.ion

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High Voltage 2024年第1期9卷 150-162页

作者： r.oyu Han Houda Zhu Qing Chen Hongbin Li Yue Tong Lins.an Han yang Jiao s.hool of Electr.cal and Electr.nic Engineer.ng Huazhong University of Science and TechnologyWuhanChina China Electr.c Power.r.s.ar.h Ins.itute WuhanChina s.hool of Ar.ificial Intelligence and Automation Huazhong University of Science and TechnologyWuhanChina

As.voltage meas.r.ng devices.ar. widely us.d in the high voltage power.s.s.em with a pr.mar.-s.condar.-fus.on s.r.ctur.,electr.nic voltage tr.ns.or.er.0}ar. dir.ctly connected to the pr.mar. conductor.and would face much mor. s.r.ous.electr.magnetic envir.nments.than gener.l s.condar. *** a r.s.lt,they would s.ill exper.ence failur.s.even when gener.l pr.tection meas.r.s.ar. adopted to s.ppr.s. over.oltages.*** addr.s. this.is.ue,an innovative method is.pr.pos.d after.analys.s.ar. conducted on the r.s.nance between a tr.ns.or.er.and an *** this.method,an air.cor.d coil is.ins.alled in a tr.ns.or.er.to ar.ificially s.ift its.natur.l fr.quency and to dodge the high-fr.quency dominant component of a tr.ns.ent over.oltage,avoiding the afor.mentioned r.s.nance and s.ppr.s.ing the s.condar. *** addition,s.mulations.and labor.tor. tes.s.ar. conducted to pr.ve this.method's.validity.

关键词： tr.ns.ent r.s.nance mentioned

s.ngle-atomic activation on ZnIn_(2)s.(4)bas.l planes.boos.s.photocatalytic hydr.gen evolution

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Nano r.s.ar.h 2024年第7期17卷 5949-5955页

作者： Jianpeng Cui Ying Wang Luxue Lin Xiaotian yang Xuyu Luo s.iying Guo Xiaoyong Xu College of Phys.cs.s.ience and Technology and Center for Interdisciplinary ResearchYangzhou UniversityYangzhou 225002China

The us. of s.ngle-atom cocatalys.s.plays.a cr.cial r.le in enhancing ar.ificial photocatalys.s.wher. the pr.cis. cons.r.ction of s.able and efficient s.ngle-atom configur.tion is.es.ential but r.mains.***,we r.por. a s.mple one-s.ep hydr.ther.al method for.pr.par.ng s.ngle-atomic Mo modified ZnIn_(2)s.(4)(Mo-ZIs.nanos.eets.as.a highly active photocatalytic hydr.gen evolution(PHE)*** Mo s.bs.ituting for.por.ion of In atoms.in ZIs.nanos.eets.induces.the s.atial char.e r.dis.r.bution,which not only pr.motes.the s.par.tion of photogener.ted char.e car.ier.0}but als. optimizes.the Gibbs.fr.e ener.y of ads.r.ing H*on s.atoms.at bas.l *** a r.s.lt,Mo-ZIs.exhibits.an impr.s.ive PHE r.te as.high as.6.71 mmol·g^(−1)·h^(−1),over.10 times.that of the pr.s.ine ZIs.with an appar.nt quantum efficiency(AQE)up to 38.8%at 420 *** s.udy gains.ins.ghts.into the coor.ination configur.tion and electr.nic modulation r.s.lting fr.m s.ngle-atomic decor.tion,pr.viding mechanis.ic cognitions.for.the development of advanced photocatalys.s.via non-pr.cious.metal atomic modification.

关键词： photocatalytic hydr.gen evolution ZnIn_(2)s.(4) s.ngle-atom activation Gibbs.fr.e ener.y

Mechanical and ther.oelectr.c pr.per.ies.in Te-r.ch Ag_(2)(Te,s.metaphas.s

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Jour.al of Mater.omics 2024年第3期10卷 543-551页

作者： Yumeng Wang Pengfei Qiu s.iqi yang Zhiqiang Gao Lidong Chen Xun s.i s.ate Key Labor.tor. of High Per.or.ance Cer.mics.and s.per.ine Micr.s.r.ctur. Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China Center.of Mater.als.s.ience and Optoelectr.nics.Engineer.ng University of Chinese Academy of SciencesBeijing100049China s.ate Key Labor.tor. of Metal Matr.x Compos.tes School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China

Ductile Ag_(2)(Te,s.ps.udobinar. compounds.have attr.cted gr.at attention in ther.oelectr.c community s.nce they can be fabr.cated into high-per.or.ance flexible and heter.-s.aped ther.oelectr.c ***,in s.ite of the numer.us.s.udies.the‘br.ttleeductile’tr.ns.tion boundar. in Ag_(2)(Te,s.is.s.ill *** this.wor.,a s.r.es.of Te-r.ch Ag_(2)(Te,s.ps.udobinar. compounds.have been *** s.r.ctur. char.cter.zations.confir. they belong to the new-concept of *** s.s.ematically inves.igation on the mechanical pr.per.ies.demons.r.te that the‘br.ttl-eductile’tr.ns.tion boundar. appear.0}ar.und x=*** good ductility is.obs.r.ed in the Te-r.ch Ag_(2)Te_(1-x)s.(x)cr.s.alizing in the Ag_(2)Te r.om-temper.tur. monoclinic s.r.ctur. and high-temper.tur. cubic s.r.ctur.,which ar. thought to be br.ttle ***,Ag content is.found to be a ver. cr.tical par.meter.deter.ining the ductility of Te-r.ch Ag_(2)Te_(1-x)s.(x).Ver. s.ight Ag-deficiency can gr.atly deter.or.te the *** ther.moelectr.c pr.per.ies.of thes. ductile Te-r.ch Ag_(2)Te_(1-x)s.(x)ps.udobinar. compounds.ar. inves.igated.A maximum ther.oelectr.c figur.-of-mer.t of 0.6 is.obtained for.Ag_(2)Te_(0.9)s.(0.1)at 600 *** wor. s.eds.light on the futur. inves.igation of Ag_(2)(Te,s.ps.udobinar. compounds.

关键词： Ther.oelectr.c Ductility Ag_(2)s Mechanical pr.per.y

MgO-attached gr.phene nanos.eet(MgO@GNs.r.infor.ed magnes.um matr.x nanocompos.te with s.per.or.mechanical,cor.os.on and biological per.or.ance

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Inter.ational Jour.al of Miner.ls.Metallur.y and Mater.als 2024年第9期31卷 2062-2076页

作者： s.Abazar. A.s.ams.pur.H.r.Bakhs.es.i-r.d M.s.s.heilir.d F.Khor.s.adizade s.s.Mir.os.eini Depar.ment of Mater.als.and Metallur.ical Engineer.ng Amirkabir University of TechnologyTehran ***Iran Ir.nian National s.andar.s.Or.anization of Hor.ozgan HormozganIran Advanced Mater.als.r.s.ar.h Center Department of Materials EngineeringNajafabad BranchIslamic Azad UniversityNajafabadIran Depar.ment of Mater.als.and Metallur.ical Engineer.ng Iran University of Science and TechnologyTehranIran

Magnes.um(Mg)alloys.ar. gaining gr.at cons.der.tion as.body implant mater.als.due to their.high biodegr.dability and ***,they s.ffer.fr.m low cor.os.on r.s.s.ance and antibacter.al *** this.r.s.ar.h,s.mi-powder.metallur.y followed by hot extr.s.on was.utilized to pr.duce the magnes.um oxide@gr.phene nanos.eets.magnes.um(MgO@GNs.Mg)compos.te to impr.ve mechanical,cor.os.on and cytocompatibility *** have r.vealed that the incor.or.tion of MgO@GNs.nanohybr.ds.into Mg-bas.d compos.te enhanced micr.har.nes. and compr.s.ive *** vitr.,os.eoblas. cell cultur. tes.s.s.ow that us.ng MgO@GNs.nanohybr.d filler.0}enhances.os.eoblas. adhes.on and apatite *** pr.s.nce of MgO@GNs.nanopar.icles.in the compos.tes.decr.as.d the opening defects.micr.-cr.cks.and micr.-por.s.of the compos.tes.thus.pr.venting the penetr.tion of the cor.os.ve s.lution into the *** demons.r.ted that the MgO@GNs.Mg compos.te pos.es.es.excellent antibacter.al pr.per.ies.becaus. of the combination of the r.leas. of MgO and phys.cal damage to bacter.um membr.nes.caus.d by the s.ar. edges.of gr.phene nanos.eets.that can effectively damage the cell wall ther.by facilitating penetr.tion into the bacter.al lipid ***,the MgO@GNs.Mg compos.te with high mechanical s.r.ngth,antibacter.al activity and cor.os.on r.s.s.ance is.cons.der.d to be a pr.mis.ng mater.al for.load-bear.ng implant applications.

关键词： metal matr.x compos.tes MgO@GNs.nanohybr.d s.r.ngthening mechanis.s antibacter.al activity biocompatibility

Tans.inone ⅡA impr.ves.Alzheimer.s.dis.as. via r.A nuclear.nr.ched abundant tr.ns.r.pt 1/micr.r.A-291a-3p/member.r.s.oncogene family r.b22a axis

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Wor.d Jour.al of Ps.chiatr. 2024年第4期14卷 563-581页

作者： Long-Xiu yang Man Luo s.eng-Yu Li Depar.ment of Neur.logy The First Affiliated Hospital of Guangxi Medical UniversityNanning 530000Guangxi Zhuang Autonomous RegionChina Depar.ment of Neur.logy Wuming Hospital of Guangxi Medical UniversityNanning 530199Guangxi Zhuang Autonomous RegionChina

BACKGr.UND Alzheimer.s.dis.as.(AD)is.a neur.degener.tive condition char.cter.zed by oxidative s.r.s. and *** ⅡA(Tan-ⅡA),a bioactive compound is.lated fr.m s.lvia miltior.hiza plants.has.s.own potential neur.pr.tective effects.however.the mechanis.s.under.ying s.ch a function r.main *** To inves.igate potential Tan-ⅡA neur.pr.tective effects.in AD and to elucidate their.under.ying *** Hematoxylin and eos.n s.aining was.utilized to analyze s.r.ctur.l br.in tis.ue *** as.es. changes.in oxidative s.r.s. and neur.inflammation,we per.or.ed enzyme-linked immunos.r.ent as.ay and wes.er. ***,the effect of Tan-ⅡA on AD cell models.was.evaluated in vitr. us.ng the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetr.zolium br.mide *** changes.r.lated to the long non-coding r.A(lncr.A)nuclear.enr.ched abundant tr.ns.r.pt 1(NEAT1)/micr.r.A(mir.A,mir.-291a-3p/member.r.s.oncogene family r.b22a axis.wer. as.es.ed thr.ugh r.ver.0} tr.ns.r.ption quantitative polymer.s. chain *** In vivo,Tan-ⅡA tr.atment impr.ved neur.nal mor.hology and attenuated oxidative s.r.s. and neur.inflammation in the br.in tis.ue of AD *** vitr. exper.ments.s.owed that Tan-ⅡA dos.-dependently amelior.ted the amyloid-beta 1-42-induced r.duction of neur.l s.em cell viability,apoptos.s.oxidative s.r.s.,and *** this.pr.ces.,the lncr.A NEAT1-a potential ther.peutic tar.et-is.highly expr.s.ed in AD mice and downr.gulated via Tan-ⅡA ***,NEAT1 pr.motes.the tr.ns.r.ption and tr.ns.ation of r.b22a via mir.291a-3p,which activates.nuclear.factor.kappa-B(NF-κB)s.gnaling,leading to activation of the pr.-apoptotic B-cell lymphoma 2-as.ociated X pr.tein and inhibition of the anti-apoptotic B-cell lymphoma 2 pr.tein,which exacer.ates.***-ⅡA inter.ention effectively blocked this.pr.ces. by inhibiting the NEAT1/mir.291a-3p/r.b22a axis.and NF-κB *** This.s.udy demons.r.tes.that

关键词： Tans.inoneⅡA Alzheimer.s.dis.as. Nuclear.enr.ched abundant tr.ns.r.pt 1 Member.of r.s.oncogene family r.b22a r.active oxygen s.ecies

Limited impacts.of occas.onal tillage on dr. aggr.gate s.ze dis.r.bution and s.il car.on and nitr.gen fr.ctions.in s.mi-ar.d dr.lands

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Inter.ational s.il and Water.Cons.r.ation r.s.ar.h 2024年第1期12卷 96-106页

作者： Wooiklee s.Paye Ves. r.Thapa r.jan Ghimir. New Mexico s.ate Univer.0}ty Agricultural Science CenterClovisNM88101USA New Mexico s.ate Univer.0}ty Department of Plant and Environmental SciencesLas CrucesNM88003USA

Tillage management that minimizes.the fr.quency and intens.ty of s.il dis.ur.ance can incr.as. s.il car.on(C)and nitr.gen(N)s.ques.r.tion and impr.ve the r.s.lience of dr.land cr.pping s.s.ems.yet the impact of occas.onal dis.ur.ance on s.il aggr.gate for.ation and the s.il or.anic car.on(s.C)s.or.ge within aggr.gates.has.not been s.udied *** evaluated the effect of four.tillage management pr.ctices.on s.il dr. aggr.gate s.ze dis.r.bution,aggr.gate-pr.tected C and N,miner.l-as.ociated or.anic matter.car.on(MAOM-C),par.iculate or.anic matter.car.on(POM-C),and cor.(Zea mays.L.)and s.r.hum(s.r.hum bicolor.L.)Moench)yields.in a s.mi-ar.d dr.land cr.pping *** included conventional tillage(CT),s.r.p-tillage(s.),no-tillage(NT),and occas.onal tillage(OT)management in a cor.-s.r.hum *** macr.-aggr.gates.wer. 51-54%gr.ater.under.s.,NT,and OT,while s.all and micr.-aggr.gates.wer. gr.ater.in *** tillage r.duced s.il aggr.gate-as.ociated C by 28-31%in macr.-aggr.gates.and 47-53%in s.all aggr.gates.at 26 months.M)s.mpling compar.d to s.,NT,and *** clay+s.lt fr.ction,CT had 14-16%,21-26%,and 36-43%les. s.C at 7,14,and 26M s.mplings.r.s.ectively,than s.,NT,and *** as.ociated N was.gener.lly s.milar.under.s.,NT,and OT,which was.gr.ater.on aver.ge than *** MOAM-C and POM-C under.s.,NT,and OT wer. gener.lly gr.ater.than r.s.ective s.C fr.ctions.under.CT at 19 and 26 M after.OT *** and s.r.hum yields.wer. s.milar.among tillage s.s.ems.in 2020,but gr.ater.under.s.,NT,and OT than CT in *** r.s.lts.s.gges. that while fr.quent intens.ve tillage can lower.s.C and N s.or.ge,a s.ngle s.ubble mulch occas.onal tillage after.s.ver.l year.0}of NT does.not lead to s.il C and N los.es.and s.il s.r.ctur.l ins.ability in s.mi-ar.d dr.lands.

关键词： Conventional tillage Occas.onal tillage Aggr.gate as.ociated car.on Miner.l as.ociated or.anic matter.car.on(MAOM-C) Par.iculate or.anic matter.car.on(POM-C)