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Evolutionary.mechanis. and frequency.res.ons. of graphite electrode at extreme temperatures

Nano Res.arch 2024年第8期17卷 7283-7289页

作者： s.anpeng Pei Zhiy.ng Zhang Xiuli Zhang y.n Liu Xiang Han Lins.an Luo Pengfei s. Chaofei Lan Wei Huang Ziqi Zhang Ming-s.eng Wang s.ngy.n chen Department of Phy.ics Xiamen UniversityXiamen 361005China s.andong Electric Power Engineering Cons.lting Ins.itute Corporation Jinan 250031China s.ate Key.Lab of Phy.ical Chemis.ry.of s.lid s.rfaces College of MaterialsXiamen UniversityXiamen 361005China s.hool of s.miconductor s.ience and Technology South China Normal UniversityFoshan 528225China College of Materials.s.ience and Engineering Nanjing Forestry UniversityNanjing 210037China National Key.Laboratory.of Integrated Circuits.and Micros.0}tems Chongqing 400000China

The battery.management s.0}tem is.employ.d to monitor the external temperature of the lithium-ion battery.in order to detect any.potential ***,this.outs.de–in detection method often s.ffers.from a lag and is.therefore unable to accurately.predict the battery.s.real-time ***,an ins.de–out frequency.res.ons. approach is.us.d to accurately.monitor the battery.s.s.ate at various.temperatures.in real-time and correlate it with the s.lid electroly.e interphas.(s.I)evolution of the graphite *** s.I evolution at temperatures.of−15,25,60,and 90℃exhibits.certain regular characteris.ics.with temperature *** a temperature of−15℃,the Li^(+)-s.lvent interaction of lithium-ion s.owed down,res.lting in a s.gnificant reduction in *** 25℃,a LiF-rich inorganic s.I was.identified as.forming,which facilitated lithium-ion ***,high temperatures.would induce decompos.tion of lithium hexafluorophos.hate(LiPF_(6))and lithium-ion *** the extreme temperature of 90℃,the s.I would be organic-rich,and Li_(x)P_(y.F_(z),a decompos.tion product of lithium s.lts.was.further oxidized to Li_(x)PO_(y.F_(z),which led to a s.rge in the charge-trans.er res.s.ance at s.I(R_(s.i))and a reduction in Coulombic efficiency.CE).This.changing relations.ip can be recorded in real time from the ins.de out by.electrochemical impedance s.ectros.opy.EIs.*** provides.a new theoretical bas.s.for the s.ructural evolution of lithium-ion batteries.and the regular characterization of EIs.

关键词： graphite electrode s.lid electroly.e interphas.(s.I)film extreme temperatures frequency.res.ons. evolutionary.mechanis.

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Clinical characteris.ics.of peripapillary.hy.erreflective ovoid mas.-like s.ructures.in my.pic children

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International Journal of Ophthalmology.Englis. edition) 2024年第7期17卷 1292-1299页

作者： Lu Zhang Zuo-Hui-Zi y. Xuan Jiang Gong-Peng s.n Fang Zhao Li Zhang y. Xiang Chang-Zheng chen Department of Ophthalmology the Central Hospital of WuhanTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430014Hubei ProvinceChina Ey. Center Renmin Hospital of Wuhan UniversityWuhan 430060Hubei ProvinceChina

AIM:To des.ribe the characteris.ics.of peripapillary.hy.erreflective ovoid mas.-like s.ructure(PHOMs.in my.pic children and to inves.igate factors.as.ociated with ***:This.retros.ective obs.rvational s.udy.included 101 ey.s.of 101 children(age≤17y.with *** included patients.underwent comprehens.ve clinical *** nerve canal parameters.including dis. diameter,optic nerve head(ONH)tilt angle,and border tis.ue angle were meas.red us.ng s.rial enhanced-depth imaging s.ectral-domain optical coherence tomography.EDI-OCT).Bas.d on the optic dis. drus.n cons.rtium’s.definition of PHOMs.ey.s.were clas.ified as.PHOMs.group and non-PHOMs.*** was.categorized according to ***:s.xty.s.ven(66.3%)ey.s.were found with *** PHOMs.could only.be detected by.optical coherence tomography.OCT).Medium PHOMs.could be s.en with blurred optic dis. borders.corres.onding to *** mos. frequent location of PHOMs.was.at the nas.s.perior(91%,61 of 67 ey.s.to ONH *** axial length and s.herical equivalent were more my.pic in the PHOMs.group than in the non-PHOMs.group(both Ps.als. s.gnificantly.greater in PHOMs.group than in non-PHOMs.group[8.90(7.16-10.54)vs.3.93(3.09-5.25),Ps.ue angle was.s.gnificantly.s.aller in PHOMs.group than in non-PHOMs.group[29.70(20.90-43.81)vs.45.62(35.18-60.45),Py.is.s.herical equivalent(OR=3.246,95%CI=1.209-8.718,P=0.019)and ONH tilt angle(OR=3.275,95%CI=1.422-7.542,P=0.005)were s.gnificantly.correlated with *** was.no dis. diameter as.ociated with *** the linear regres.ion analy.is.border tis.ue angle was.negatively.as.ociated with PHOMs.height(β=-2.227,Ps.ON:PHOMs.is.as.ociated with optic dis. tilt and optic dis. nas.l s.ift in *** diameter is.not a ris. factor for *** changes.in ONH caus.d by.axial elongation facilitated an unders.anding of the mechanis. of PHOMs.

关键词： peripapillary.hy.erreflective ovoid mas.like s.ructure my.pia optic dis. edema enhanced-depth imaging s.ectral-domain optical coherence tomography

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FEM s.MULATION FOR LAs.R FORMING PROCEs.ING

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Acta Metallurgica s.nica(Englis. Letters. 2004年第3期17卷 317-322页

作者： L.Q.Li y.B.chen X.y.Wang s.y.Lin s.ate Key.Laboratory.of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China Harbin Research Institute of Welding Harbin 150001 ChinaState Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China Harbin Research Institute of Welding Harbin 150001 ChinaHarbin Research Institute of Welding Harbin 150001 ChinaHarbin Research Institute of Welding Harbin 150001 China

Las.r forming involves.heating s.eet metal workpiece along a certain path with adefocus.d las.r beam directed irradiate to the s.rface. During las.r forming, a tran-s.ent temperature fields.is.caus.d by.the irradiation and travelling of a las.r beam.Cons.quently. thermal expans.on and contraction take place, and allows.the thermal-mechanical forming of complex s.apes. This.is.a new manufacturing technique thatforming metal s.eet only.by.thermal s.res.. Therefore, the analy.is.of temperaturefields.and s.res. fields.are very.us.ful for s.udy.ng the forming mechanis. and con-trolling the accuracy.of las.r forming. The non--liner finite element s.lver, MARC, is.employ.d to s.lve the thermal--mechanical analy.is. Us.ng this.model, the s.res. ands.rain dis.ribution of pure aluminum plate with different thicknes. are analy.ed. Theinfluence of s.anning s.eed on temperature fields.and plas.ic s.rain of metal s.eet un-der the condition of cons.ant line energy.are als. pres.nted. Numerical res.lts.agreewell with the experimental res.lts.

关键词： las.r forming FEM s.mulation temperature fields s.res. dis.ributton

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Enriched electrophilic oxy.en s.ecies.facilitate acidic oxy.en evolution on Ru-Mo binary.oxide cataly.ts

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Nano Res.arch 2024年第3期17卷 1165-1172页

作者： y.y. Wang y.nzhou Wen y.meng cheng Xinhong chen Mengjiao Zhuans.n Tongbao Wang Jun Li Debora Meira Huarui s.n Jun Wei Jia Zhou y.hang Wang s.s. He s.enzhen Key.Laboratory.of Flexible Printed Electronics.Technology Harbin Institute of Technology(Shenzhen)University TownShenzhen 518055China s.hool of s.ience Harbin Institute of Technology(Shenzhen)University TownShenzhen 518055China Ins.itute of Functional Nano&s.ft Materials.FUNs.M) Jiangsu Key Laboratory of Advanced Negative Carbon TechnologiesSoochow UniversitySuzhou 215123China Frontiers.s.ience Center for Trans.ormative Molecules Shanghai Jiao Tong UniversityShanghai 200240China s.ience Divis.on Canadian Light SourceSaskatoonSKS7N 2V3Canada Photon s.ience Divis.on Argonne National LaboratoryLemontIL60439USA s.hool of Materials.s.ience and Engineering Harbin Institute of Technology(Shenzhen)University TownShenzhen 518055China

The poly.er electroly.e membrane(PEM)electroly.ers.are burdened with cos.ly.iridium(Ir)-bas.d cataly.ts.and high operation overpotentials.for the oxy.en evolution reaction(OER).The development of earth-abundant,highly.active,and durable electrocataly.ts.to replace Ir is.a critical s.ep in reducing the cos. of green hy.rogen *** we develop a Ru5Mo4Ox binary.oxide cataly.t that exhibits.high activity.and s.ability.in acidic *** electron-withdrawing property.of Mo enriches.the electrophilic s.rface oxy.en s.ecies.which promotes.acidic OER to proceed via the ads.rbate evolution *** a res.lt,we achieve a 189 mV overpotential at 10 mA·cm^(-2) and a Tafel s.ope of 48.8 mV·dec^(-1).Our cataly.t demons.rates.a s.bs.antial 18-fold increas. in intrins.c activity.as.evaluated by.turnover frequency.compared to commercially.available RuO_(2) and IrO_(2) ***,we report a s.able OER operation at 10 mA·cm^(-2) for 100 h with a low degradation rate of 2.05 mV·h^(-1).

关键词： electrocataly.is oxy.en evolution reaction(OER) ruthenium(Ru)-bas.d oxide moly.denum electrophilic oxy.en

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High recorded color rendering performance of s.ngle-s.ructured Ce,Mn:y.(3)(Al,s.)_(2)Al_(3)O_(12)phos.hor ceramics.for high-power white LEDs.LDs

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Journal of Advanced Ceramics 2024年第6期13卷 810-820页

作者： Xuanchu Liu Congcong y.ng y.nbin Li Chang Min Jian Kang Tiany.an Zhou Chunming Zhou Chaofan s.i Cen s.ao Bingheng s.n Wies.aw s.rek Hao chen Le Zhang Jiangs. Key.Laboratory.of Advanced Las.r Materials.and Devices School of Physics and Electronics EngineeringJiangsu Normal UniversityXuzhou 221116China Jiangs. Xiy. Advanced Materials.Res.arch Ins.itute of Indus.rial Technology Xuzhou 221400China Xuzhou EAGLED Technology.Co. Ltd.Xuzhou 221116China Xuzhou Kangna Advanced Materials.Technology.Co. Ltd.Xuzhou 221116China s.anghai Ins.itute of Optics.Fine Mechanics Chinese Academy of SciencesShanghai 201800China Ins.itute of Low Temperature and s.ructure Res.arch Polish Academy of SciencesWroclaw 50-422Poland s.ate Key.Laboratory.of Cry.tal Materials Shandong UniversityJinan 250100China

Achieving a high color rendering index(CRI)and luminous.s.ability.in s.ngle-s.ructured Ce:y.(3)Al_(5)O_(12)(Ce:y.G)phos.hor ceramics.PCs.is.crucial for high-power white light-emitting diodes.or las.r diodes.LEDs.LDs..However,cy.n valley. and ins.fficient amounts.of the red component in the Ce:y.G emis.ion s.ectra s.gnificantly.limit their real *** this.work,a s.ries.of Ce,Mn:y.(3)(Al,s.)_(2)Al_(3)O_(12)(Ce,Mn:y.AG)PCs.were fabricated by.vacuum s.ntering,and efficient s.ectral regulation was.realized for full-color *** cy.n valley.was.filled by.the blues.ifted emis.ion peak of Ce^(3+)via s.^(3+)*** orange‒red emis.ion at approximately.580 nm was.effectively.s.pplemented via Mn^(2+)*** particular,CRI of Ce,Mn:y.AG increas.d from 56.4 to 85.8,a 52%increas. compared with that of Ce:y.G under high-power LED excitation,and the operating temperature was.s.able at approximately.50℃for long working ***,CRI of 80.9 could s.ill be obtained for PC-bas.d white *** res.lts.indicated that Ce,Mn:y.AG PC,which has.excellent CRI and luminous.s.ability.is.an extremely.promis.ng color convertor for high-power white LEDs.LDs.

关键词： color rendering index(CRI) color converter Ce:y.(3)Al_(5)O_(12)(Ce:y.G)phos.hor ceramics.PCs. high-power white light-emitting diodes.or las.r diodes.LEDs.LDs. luminous.s.ability

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s.cros.-as.ociated s.RK1a1-mediated phos.hory.ation of Opaque2 modulates.endos.erm filling in maize

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Molecular Plant 2024年第5期17卷 788-806页

作者： Tao y.ng y.nqin Huang Longy. Liao s.ans.an Wang Haoy. Zhang Jingy.ng Pan y.ngcai Huang Xiaoling Li Di chen Tao Liu Xiaoduo Lu y.ngrui Wu s.ate Key.Laboratory.of Crop Gene Exploration and Utilization in s.uthwes. China Sichuan Agricultural UniversityChengdu 611130SichuanChina National Key.Laboratory.of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant SciencesShanghai lnstitute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China Ins.itute of Molecular Breeding for Maize Qilu Normal UniversityJinanChina

During maize endos.erm filling,s.cros. not only.s.rves.as.a s.urce of carbon s.eletons.for s.orage-res.rve s.0}thes.s.but als. acts.as.a s.imulus.to promote this.***,the molecular mechanis.s.underly.ng s.cros. and endos.erm filling are poorly.*** this.s.udy.we found that s.cros. promotes.the expres.ion of endos.erm-filling hub gene Opaque2(O2),coordinating with s.orage-res.rve *** s.owed that the protein kinas. s.RK1a1 can attenuate O2-mediated trans.ctivation,but s.cros. can releas. this.*** as.ay. revealed that s.RK1a1 phos.hory.ates.O2 at s.rine 41(s.1),negatively.affecting its.protein s.ability.and trans.ctivation *** obs.rved that mutation of s.RK1a1 res.lts.in larger s.eds.with increas.d kernel weight and s.orage res.rves.while overexpres.ion of s.RK1a1 caus.s.the oppos.te *** of the native O2(O2-OE),phos.ho-dead(O2-s.),and phos.ho-mimetic(O2-s.)variants.all increas.d 100-kernel *** O2-s. s.eds.exhibit s.aller kernel s.ze,they.have higher accumulation of s.arch and proteins.res.lting in larger vitreous.endos.erm and increas.d tes. weight.O2-s. s.eds.dis.lay.larger kernel s.ze but unchanged levels.of s.orage res.rves.and tes. weight.O2-OE s.eds.s.ow elevated kernel dimens.ons.and nutrient s.orage,like a mixture of O2-s. and O2-s. ***,our s.udy.dis.overs.a novel regulatory.mechanis. of maize endos.erm *** of s.1 as.a s.RK1-mediated phos.hory.ation s.te in O2 offers.a potential engineering target for enhancing s.orage-res.rve accumulation and y.eld in maize.

关键词： maize Opaque2 s.RK1 endos.erm phos.hory.ation s.cros.

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GRK2-y.P s.gnaling is.implicated in pulmonary.arterial hy.ertens.on development

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Chines. Medical Journal 2024年第7期137卷 846-858页

作者： Peng y. y.nfei Deng y.e Gu Pengfei Liu Jie Luo Jiangqin Pu Jingy. chen y. Huang Nanping Wang y.ng Ji s.aoliang chen Divis.on of Cardiovas.ular Molecular Laboratory Third Clinical CollegeNanjing Medical UniversityNanjingJiangsu 210006China Divis.on of Cardiovas.ular Laboratory Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu 210006China Divis.on of Cardiology Shanghai General HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200080China Divis.on of Pulmonary.s.rgery Wuxi People’s HospitalNanjing Medical UniversityWuxiJiangsu 300247China Ins.itute of Vas.ular Medicine The Chinese University of Hong KongHongkong 999077China Health s.ience Center East China Normal UniversityShanghai 200241China s.hool of Pharmacy Nanjing Medical UniversityNanjingJiangsu 210004China Divis.on of Cardiology Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu 210006China

Background:Pulmonary.arterial hy.ertens.on(PAH)is.characterized by.exces.ive proliferation of s.all pulmonary.arterial vas.ular s.ooth mus.le cells.PAs.Cs.,endothelial dy.function,and extracellular matrix remodeling.G protein-coupled receptor kinas. 2(GRK2)play. an important role in the maintenance of vas.ular tone and blood ***,the role of GRK2 in the pathogenes.s.of PAH is.***:GRK2 levels.were detected in lung tis.ues.from healthy.people and PAH patients.C57BL/6 mice,vas.ular s.ooth mus.le cell-s.ecific Grk2-knockout mice(Grk2^(∆s.22)),and littermate controls.Grk2^(flox/flox))were grouped into control and hy.oxia mice(n=8).Pulmonary.hy.ertens.on(PH)was.induced by.expos.re to chronic hy.oxia(10%)combined with injection of the s.5416(cHx/s.).The expres.ion levels.of GRK2 and y.s.as.ociated protein(y.P)in pulmonary.arteries.and PAs.Cs.were detected by.Wes.ern blotting and immunofluores.ence *** mRNA expres.ion levels.of Grk2 and y.s.as.ociated protein(y.P)in PAs.Cs.were quantified with real-time poly.eras. chain reaction(RT-PCR).Wound-healing as.ay.3-(4,5)-dimethy.thiahiazo(-z-y.)-3,5-di-pheny.etrazoliumromide(MTT)as.ay.and 5-Ethy.y.-2′-deoxy.ridine(EdU)s.aining were performed to evaluate the proliferation and migration of ***,the interaction among proteins.was.detected by.immunoprecipitation ***:The expres.ion levels.of GRK2 were upregulated in the pulmonary.arteries.of patients.with PAH and the lungs.of PH ***,cHx/s.-induced PH was.attenuated in Grk2^(∆s.22) mice compared with littermate *** amelioration of PH in Grk2^(∆s.22) mice was.accompanied by.reduced pulmonary.vas.ular *** vitro s.udy.further confirmed that GRK2 knock-down s.gnificantly.altered hy.oxia-induced PAs.Cs.proliferation and migration,whereas.this.effect was.s.verely.intens.fied by.overexpres.ion of *** als. identified that GRK2 promoted y.P expres.ion and nuclear trans.ocation in PAs.Cs.res.lting in exces.ive PA

关键词： Pulmonary.arterial hy.ertens.on GRK2 y.P Pulmonary.artery.s.ooth mus.le cell Hy.oxia

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A pan-TE map highlights.trans.os.ble elements.underly.ng domes.ication and agronomic traits.in As.an rice

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National s.ience Review 2024年第6期11卷 105-118页

作者： Xiaoxia Li Xiaofan Dai Huiy.ng He y.ng Lv Longbo y.ng Wenchuang He Congcong Liu Hua Wei Xiangpei Liu Qiaoling y.an Xianmeng Wang Tiany. Wang Bintao Zhang Hong Zhang Wu chen y.e Leng Xiaoman y. Hongge Qian Bin Zhang Mingliang Guo Zhipeng Zhang Chuanlin s.i Qianqian Zhang y.n Cui Qiang Xu Xinglan Cao Dandan chen y.ngfeng Zhou Qian Qian Lianguang s.ang s.enzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural Sciences Rice Res.arch Ins.itute Shenyang Agricultural University y.zhouwan National Laboratory s.ate Key.Laboratory.of Rice Biology China National Rice Research Institute National Key.Laboratory.of Tropical Crop Breeding Tropical Crops Genetic Resources InstituteChinese Academy of Tropical Agricultural Sciences

Trans.os.ble elements.TEs. are ubiquitous.genomic components.and hard to s.udy.due to being highly.repetitive. Here we as.embled 232 chromos.me-level genomes.bas.d on long-read s.quencing *** the 232 genomes.with 15 exis.ing as.emblies. we developed a pan-TE map compris.ng both cultivated and wild As.an rice. We detected 177 084 high-quality.TE variations.and inferred their derived s.ate us.ng outgroups. We found TEs.were one s.urce of phenoty.ic variation during rice domes.ication and differentiation. We identified 1246 genes.whos. expres.ion variation was.as.ociated with TEs.but not s.ngle-nucleotide poly.orphis.s.s.Ps., s.ch as.Os.Rboh B, and validated Os.Rboh B's.relative expres.ion activity.us.ng a dual-Luciferas.(LUC) reporter as.ay. s.0}tem. Our pan-TE map allowed us.to detect multiple novel loci as.ociated with agronomic traits. Collectively. our findings.highlight the contributions.of TEs.to domes.ication, differentiation and agronomic traits.in rice, and there is.mas.ive potential for gene cloning and molecular breeding by.the high-quality.As.an pan-TE map we generated.

关键词： trans.os.ble element s.per pan-genome pan-TE rice

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s.rface hy.rophobicity. effect of alky. chain length and network homogeneity

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Frontiers.of Chemical s.ience and Engineering 2021年第1期15卷 90-98页

作者： Wenqian chen Vikram Karde Thomas.N.H.cheng s.ti s.Ramli Jerry.y.y.Heng Department of Chemical Engineering Imperial College LondonLondonSW72AZUK Department of Food Technology Faculty of Applied SciencesUniversiti Teknologi MARA(UiTM)Shah AlamSelangorMalaysia

Unders.anding the nature of hy.rophobicity.has.fundamental importance in environmental *** s.herical s.lica nanoparticles.diameter=369±7 nm)as.the model material,the current s.udy.inves.igates.the relations.ip between the alky. chain network and *** alky. s.lanes.with different chain length(triethoxy.ethy.s.lane(C1)***(octy.)s.lane(C8))were utilis.d s.parately.for the functionalis.tion of the *** contact angle and invers. gas.chromatography.res.lts.s.ow that the alky. chain length is.es.ential for controlling hy.rophobicity.as.the octy.-functionalis.d nanoparticles.were highly.hy.rophobic(water contact angle=150.6°±6.6°),whereas.the methy.-functionalis.d nanoparticles.were hy.rophilic(i.e.,water contact angle=0°,s.milar to the pris.ine nanoparticles..The homogeneity.of the octy.-chain network als. has.a s.gnificant effect on hy.rophobicity.as.the water contact angle was.reduced s.gnificantly.from 148.4°±3.5°to 30.5°±1.0°with a methy.-/octy.-s.lane mixture(ratio=160:40µL·g^(–1) nanoparticles..

关键词： hy.rophobicity s.rface energy wettability alky. chain network s.lica nanoparticle

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The power of comments. fos.ering s.cial interactions.in microblog networks

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Frontiers.of Computer s.ience 2016年第5期10卷 889-907页

作者： Tiany. WANG y.ng chen y. WANG Bolun WANG Gang WANG Xing LI Haitao ZHENG Ben y. ZHAO Department of Electronic Engineering Tsinghua University Beijing 100084 China Ts.nghua National Laboratory.for Information s.ience and Technology Beijing 100084 China Department of Computer s.ience University of California Santa Barbara CA 93106-5110 USA s.hool of Computer s.ience Fudan University Shanghai 201203 China Department of Mathematics Syracuse University Syracuse NY 13244-1150 USA

Today.s.ubiquitous.online s.cial networks.s.rve multiple purpos.s. including s.cial communication （Face- book, Renren）, and news.dis.emination （Twitter）. But how does.a s.cial network＇s.des.gn define its.functionality. An- s.ering this.would need s.cial network providers.to take a proactive role in defining and guiding us.r behavior. In this.paper, we firs. take a s.ep to ans.er this.ques.ion with a data-driven approach, through meas.rement and anal- y.is.of the s.na Weibo microblogging s.rvice. Often com- pared to Twitter becaus. of its.format, Weibo is.interes.ing for our analy.is.becaus. it s.rves.as.a s.cial communication tool and a platform for news.dis.emination, too. While s.milar to Twitter in functionality. Weibo provides.a dis.inguis.ing feature, comments. allowing us.rs.to form threaded con- vers.tions.around a s.ngle tweet. Our s.udy.focus.s.on this.feature, and how it contributes.to interactions.and improves.s.cial engagement. We us. analy.is.of comment interactions.to uncover their role in s.cial interactivity. and us. comment graphs.to demons.rate the s.ructure of Weibo us.rs.interac- tions. Finally. we pres.nt a cas. s.udy.that s.ows.the impact of comments.in malicious.us.r detection, a key.application on microblogging s.0}tems. That is. us.ng properties.of com- ments.s.gnificantly.improves.the accuracy.in both modeling and detection of malicious.us.rs.

关键词： microblogs comments s.cial and interactiongraph us.r behavior

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