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  • 简介:1毫无疑问,当2009年的德尔·波特罗在美网连续击败纳达尔和费德勒夺得冠军的时候,他就已经成为了打破巨头垄断的最好人选,可惜右手腕的伤病延缓了他的脚步,虽然在伤病恢复之后他的世界排名短暂来到过史上最高第四的位置,

  • 标签: 元素 2009年 世界排名 费德勒 纳达尔 伤病
  • 简介:Asanresearchexampleofthewidelyexistingcooperation-competitionsystems,theauthorspresentanempiricalinvestigationonafruitnutritivefactornetwork.Itisdescribedbyanode-weightedbipartitegraph.Thefruitnutritivefactorsaredefinedasthenodes,andtwonodesareconnectedbyanedgeifatleastonefruitcontainsthesetwonutritivefactors.Thefruitsaredefinedasthecollaborationacts.Thenode-weightW_(nt),whichsignifiesthe'importancedegree'ofeachactornode,isdefinedasthecontentofanutritivefactorinafruit.Theempiricalinvestigationresultsshowsomeuniquefeatures.Thenode-weightdistributionstakeso-called'shiftedpowerlaw'functionforms,buttheact-weightdistributiontakesanormalform.Thedegreeandact-degreedistributionsshowimpulsive-spectrumlikeforms.Theseobservationsmaybehelpfulforthestudyoffruits.Thenetworkdescriptionmethodproposedinthisarticlemaybeuniversalforakindofcooperation-competitionsystems.

  • 标签: 果实营养 子网络 合作竞争 营养因素 营养因子 调查结果
  • 简介:Itisstandardpractice,wheneveraresearcherfindsanewgene,tosearchdatabasesforgenesthathaveasimilarsequence.Itisnotstandardpractice,wheneveraresearcherfindsanewgene,tosearchforgenesthathavesimilarexpression(coexpression).Failuretoperformco-expressionsearcheshasleadtoincorrectconclusionsaboutthelikelyfunctionofnewgenes,andhasleadtowastedlaboratoryattemptstoconfirmfunctionsincorrectlypredicted.WepresentheretheexampleofGliaMaturationFactorgamma(GMF-gamma).Despiteitsname,ithasnotbeenshowntoparticipateingliamaturation.ItisageneofunknownfunctionthatissimilarinsequencetoGMF-beta.ThesequencehomologyandchromosomallocationledtoanunsuccessfulsearchforGMF-gammamutationsinglioma.WeexaminedGMF-gammaexpressionin1432humancDNAlibraries.Highestexpressionoccursinphagocytic,antigen-presentingandotherhematopoieticcells.WefoundGMF-gammamRNAinalmosteverytissueexamined,withexpressioninnervoustissuenohigherthaninanyothertissue.OurevidenceindicatesthatGMF-gammaparticipatesinphagocytosisinantigenpresentingcells.Searchesforgeneswithsimilarsequencesshouldbesupplementedwithsearchesforgeneswithsimilarexpressiontoavoidincorrectpredictions.

  • 标签: GMF-gamma 基因表达 序列分析 同源性 基因功能 神经胶质
  • 简介:translationitselfisaculture,Thelanguageisacountryculturecarrier,thetranslationofafilmlikefillingaword

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  • 简介:Thegrowthofdevelopingcountriesisanimportanteventofhistoricsignificanceinthecurrentworld.Withthechangesoftheconditionsofthetimes,theirpoliticalandeconomicpursuits

  • 标签: 中国 发展中国家 外交工作 安全战略
  • 简介:FrequencyresponseoftiltmetersandtidalfactorJUNYANG(杨军)SeismologicalBureauofJiangsuProvince,Nanjing210014.ChinaAbstractTherela...

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  • 简介:Objective:Tostudytheexpressionofactivatedepi-dermalgrowthfactorreceptor(EGFR)andtranscrip-tionfactorE2F(E2F)inCondylomaAccuminata(CA)patients.Methods:ImmunofluorescenttechniqueswereusedtoinvestigatetheexpressionofactivatedEGFRandE2FinCApatients.Results:TheexpressionofactivatedEGFRonthemembraneofepithelialcellsinCAlesionswassig-nificantlygreatercomparedtoexpressionleversinthecontrolgroup(P<0.01).Moreover,theco-expres-sionofactivatedEGFRandE2Fwassignificantlyin-creasedcomparedtothecontrolgroup(P<0.01).Conclusion:Ourobservationssuggestthatthein-creaseinactivatedEGFRexpressionmaystimulatehyperplasiainCApatientsthroughtheactivationoftranscriptionfactorE2F.

  • 标签: 尖锐湿疣 活化型表皮生长因子受体 转录调节因子E2F 免疫荧光法
  • 简介:Objective:Tostudytheexpressionlevelsofplatelet-derivedgrowthfactor(PDGF)andgranulocytecolony-stimulatingfactor(G-CSF)inperipheralbloodandtheirroleinthepathogenesisofCondylomaacuminatum(CA).Methods:Seraweretakenfrom70patientswithCondylomaacuminatumandcomparedwith35healthycontrols.PDGFandG-CSFinserumwerequantitatedusingadualantibodysandwichenzyme-linkedimmunoabsorbentassay(ELISA).Results:SerumconcentrationsofPDGFandG-CSFweresignificantlyincreasedinpatientswithCondylomaacuminatum(CA)comparedtocontrols(P<0.001andP<0.005respectively).SerumlevelsofPDGFandG-CSFcorrelatedwithclinicalseverityofCA,butnosignificantdifferencewasobservedbetweendifferentdurationofdiseasegroups.AsignificantpositivecorrelationwasnoticedbetweenneutrophilcountandG-CSFlevels(γ=0.38,P<0.001),andtheneutrophilcountshowednosignificantcorrelationwithPDGF.Conclusion:TheresultsindicatedthatincreasedexpressionofPDGFandG-CSFinperipheralbloodmightbeinvolvedinpathogenesisofCA.

  • 标签: 尖锐湿疣 CA 血小板源性生长因子 PDGF 粒细胞集落刺激因子 G-CSF
  • 简介:客观:为了与M-CSFR验证MAF-J6-1受体的抗原协会并且进一步学习M-CSF和它的受体的角色,调停了在支持白血病的房间增长的juxtacrine。方法:MAF-J6-1RRE2的Monoclonal抗体(McAb)和rhM-CSFR的polyclonal抗体(PolyAb)被准备。到M-CSFR的McAbRE2的特性被ELISA被间接ELISA,有J6-1房间殖民地形成的跨neutralizing试金和中立化测试证实。结果:到M-CSFR的净化的RE2的反应活动是超过1:16000。M-CSFR和MAF-J6-1R的禁止的活动能被RE2和anti-M-CSFR抗体堵住。到M-CSFR的RE2的反应能被M-CSFR减少。结论:到M-CSFR的RE2的特性被证实,有M-CSFR的MAF-J6-1R的抗原协会被证明。它建议M-CSF和它的受体调停了auto-juxtacrine刺激能是在白血病或nonhematological恶意的起作用的机制。

  • 标签: MACROPHAGE COLONY stimulating factor RECEPTOR MONOCLONAL
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  • 简介:代数课本中指出:“在a>0时,|x|>a(?)x<-a或x>a;|x|0”。其实,这一等价性在a≤0时也同样成立。现证明如下:①当a=0吋,i|x|>a即|x|>0的解集显然是:x<0或x>0即x<-a或x>a。

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  • 简介:通讯因素分析(CFA)被采用学习14个HPLC系统的选择。测试LC系统作为反向阶段被分类(RP),离子交换(IE)和吸水的相互作用层析(HILIC)模式。HILIC列上的吸水的溶质的保留被秒顺序效果显著地除他们的吸水的性质以外影响,这被发现。硅石表面上的器官的修饰词和残余silanol组两个都参予了保留。Hypersil?氨基的列以适当条件在HILIC模式执行了分离,并且它的保留机理比(aspartamide)HILIC,柱涂渍poly组织更类似于HILIC硅石列的。

  • 标签: HPLC系统 测定 选择性 对应因子分析
  • 简介:Inthispaperamodeloftransvcrsalfilterispresentedtostudytheadaptivematchofthetimevariantchannel.Theleastmeansquareerrorfil-teringmethodisusedtoobtaintheweightingcoeffcientsofthefilter.Withthepurposeofspeedinguptheconvergenceoftheiterationequationofadaptivefiltering,anadaptivefactoroftheiterationstepsizeμ_aisderivedinthispaper.Theresultofcomputersimulationshowsthatinthecaseofusingadaptiveμ_a,theconvergencespeedoftheiterationequationisincreased2timesapproximatelyincomparisonwithconstantμ_f.Thestudysuggeststhattheadaptivefilterwithadaptiveμ_a.havetheperformancetofollowthechangeoftime-variantcharacteristicsofthechannel.

  • 标签: ITERATION MATCH FILTERING weighting CORRECTION instead
  • 简介:Multimode干扰(MMI)设备广泛地在平面lightwave电路(PLC)被使用。设备长度能很好与逐渐变细的multimode区域被减少。传统的设计公式基于弱限制的波导为MMI设备显示出大错误。作为波导宽度的替换与模式宽度基于分析,有更好的精确的一个设计公式被介绍。有软件模拟的比较验证了它的精确。CLC数字TN256

  • 标签: 多模式干扰 集成光学器件 长度还原因子 光波回路