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简介：Leadisoneofthepoisonoustraceelementforhumanbody.Itisimportanttofindawayformeasuringcontentoflead.Deterninationofleadbyelectrochemistryisoneofamethod[1].Inthispaper,leadisdeterminedbysingle-sweeppolarography.Theabsorptionbehaviorofmeso-tetra(4-sulfonylphenyl)porphyrin(H2TPPS4)complexwithleadionhasalsobeenstudied.InNa2B4O7-NaOHsolutionwithpH=l0.5,thereductionpeaksoftheligandareP1(Ep1=-0.38V),P2(Ep2=-1.04V),whichpotentialsareobtainedvs.S.C.E.Whenleadionhasbeenaddedintoabovesolution.ThepeakcurrentofP1andP2decrease,andanewreductionpeakP3(Ep3=-1.10V)appears.ItshowsthattheTPPS4-Pb(Ⅱ)complexforms,andthismethodcanbeappliedtostudythecomplex.

简介：迈克尔·戴尔是全球知名IT产品及服务供应商——戴尔公司的首席执行官(ChiefExeeutiveOfficer)。他是IT精英，于19岁时创立了戴尔公司。下面是他的一篇报告《让兴趣引导你》。

简介：ＰｒｏｐｅｒｔｉｅｓｏｆＮｕｃｌｅｉｉｎＬｅａｄＲｅｇｉｏｎ￥ＧｕＪｉｎｎａｎａｎｄＺｈａｎｇＣｈａｎｇｈｕａＴｈｅｓｔｒｕｃｔｕｒｅｏｆｔｈｅｎｕｃｌｅｉｉｎｔｈｅｖｉｃｉｎｉｔｙｏｆ２０８Ｐｂｈａｖｅｂｅｃｏｍｅｏｆｇｒｅａｔｅｘｐｅｒ...

简介：Powermeansdifferentthingstodifferentpeople.Somesaythatpoweristheabilitytoexert(施加)influencebeyondthoseoneactuallycontrols.Othersmaintainthatpowerboilsdown(压缩，简化)totheabilitytogetwhatonewants.Consideringthatweneedincometoobtainthethingsthatweneedorwant,

简介：【摘要】 目的 针对下肢动脉疾病(LEAD)患者临床应用加味黄芪桂枝五物汤的具体效果进行研究讨论。方法 选取2022年1月-2023年1月100例LEAD患者为本次研究对象，根据临床治疗方式的区别性，将患者分组治疗后对比治疗效果，常规治疗者纳入参照组（50例），加味黄芪桂枝五物汤治疗者纳入研究组（50例），统计治疗有效率、不良反应、血流动力学指标各项数据。结果 治疗有效率对比，研究组高于参照组（P＜0.05）；治疗前患者血流动力学指标对比无差异性（P＞0.05）；治疗后指标对比，差异明显，研究组低于参照组（P＜0.05）。结论加味黄芪桂枝五物汤的应用，有助于LEAD患者治疗有效率提升，同时治疗安全性得到保证，患者血流动力学明显改善，应用效果显著，具有推广及使用的价值。

简介：IntroductionLead-inmeanstointroducestudentsgentlytotopicstheyaregoingtodealwith,settlethemdownatthebeginningofalessonandgenerallypreparethemforthetopic.Usinglead-insinlanguageteachingisnotanewidea.Someofthemorerecenttextbooks,notably‘StepbyStep’,andotherteachers’books,havewarming-upexercisesandculturalbackgroundinformationwhichteacherscanuseaslead-in.However,formanyyears,becauseofalackofsuitabletraininginteachingmethodology,manyEnglishteacherstendedtoneglectlead-in,thefirststepinpresentingatext,andwentdirectlyintothetextitself.Thestudentswereconfrontedwithsomethingtheyknewnothingabout,andhadnoparticulardesiretoknowabout.Theywereexpectedtoadjustthemselvestotheteachingcontext.

简介：Leadisamajorenvironmentaltoxicantthroughouttheworld.Leadcaninducesevereneurotoxicityincludingirreversiblehearingimpairment.Manyinvivostudieshaveshownthatleaddamagestheauditorynervoussystem,buthaslittleornoeffectoncochlearsensoryhaircells.Togaininsightsonleadototoxicandneurotoxiceffectsinvitro,leadacetate(LA)wasappliedtopostnatalday3-4ratcochlearorganotypicculturesfor24or72hwithdosesof0.1,0.5,1,2or4mM.After24or72htreatmentwithleadacetate,nearlyallofcochlearsensoryhaircellswereintact.However,after72htreatment,theperipheralauditorynervefibersprojectingtothehaircellsandthespiralganglionneurons(SGN)weredamagedwhenleadconcentrationexceeded2mM.Ourresultsindicatedthat72htreatmentwithonlythehighdoses(>2mM)ofleadactatedamagedSGNsandperipheralnervefibers;haircellsremainedstructurallyintactevenafter4mMtreatment.TheseresultsshowthatleadprimarilydamagescochlearnervefibersandSGNratherthanhaircells.

简介：Thepaperanalyzestheinfluenceofleadtoxicitybyanaerobicgranulesludgeinhibitionandrecoveringexperiments.Theresultshowsthattherearedifferentinhibitiontypesatdiffer-entleadcontents.Higherleadcontentleadstomoreinhibitiongranularsludge,andatthesametime,thetimeofgasrecoveryisdifferent.Lowerleadcontentpermicroorganismresultsinsoonersludgerecovery.Microorganismshaveagoodabilitytoresistleadtoxicity.

简介：TheDeGrootmodelisoneofthemostclassicalmodelsinthefieldofopiniondynamics.ThestandardDeGrootmodelassumesthatagentsarehomogeneousandupdatetheiropinionsinthedirectionofaweightedaverageoftheirneighbors'opinions.Onenaturalquestioniswhetherasecondtypeofagentscouldsignificantlychangethemainpropertiesofthemodel.Theauthorsaddressthisquestionbyintroducingrebels,whoupdatetheiropinionstowardtheoppositeoftheirneighbors'weightedaverage.Theauthorsfindthattheexistenceofrebelsremarkablyaffectstheopiniondynamics.Undercertainmildconditions,theexistenceofafewrebelswillleadthegroupopiniontothegoldenmean,regardlessoftheinitialopinionsoftheagentsandthestructureofthelearningnetwork.ThisresultiscompletelydifferentfromthatofthestandardDeGrootmodel,wherethefinalconsensusopinionisdeterminedbyboththeinitialopinionsandthelearningtopology.Thestudythenprovidesnewinsightsintounderstandinghowheterogeneousindividualsinagroupreachconsensusandwhythegoldenmeanissocommoninhumansociety.

简介：LongyuanElectricPowerGroupisambitioustoaccelerateconstructionofwindpowerasitsownimportantstrategyofsustainabledevelopment.Ithasdrawnupsixstrategiesofqualifiedpeople,market,scale,operation,R&Dandbrandedwindpower,andworkshardforthetargetthatitsshareholdingwindpowerinstalledcapacityreachmorethan35%ofthetotalalloverthecountrywithinaperiodofsixyears.

简介：随着电子元器件的小型化，高集成度的发展，电子组装技术也经历了以下几个发展阶段，手工（50年代）——》半自动插装浸焊（60年代）——》全自动插装波峰焊（70年代）——》SMT（80年代）一》窄间距SMT（90年代）——》如今的超窄间距SMT。

简介：Thisarticlebringsupsomeexplanationsandclarificationsabouttwicedepositionofleadiodidewritteninthepreviousarticle[1],afterlookingintothetwicedepositionofleadiodideandcarryingontheimprovingbyalayerofPbBr2insteadofPbI2,theshortcircuitcurrentdensity(Jsc)hasdecreased,allowingtoexplainthetwicedepositionis,infact,onedeposition.Theabsorbanceofperovskitewillbediscussed.Thesubstratetemperatureisthemostimportantparameterbecauseitcanimprovetheefficiencyoftheperovskitesolarcells,thesubstratetemperatureshouldbeabout100°Catthedepositionofleadiodide,andwhenthedepositionofmethylammoniumiodideisdonewhenthesubstrateisstillhot,theefficiencyisalsoimproved.Thetemperatureduringthepreparationislessimportantthanthehumidity,butthepreparationinthegloveboxallowsthattheenvironmentalconditionsbecontrolled.

简介：在Ninglang的Tongchanghe本国的铜辉铜矿存款在西方的云南的low-Tibasalts发生，并且充满差错的&交代作用metallogenesis的模式显示这存款具有迟了阶段的热水的起源。这使定义形成矿石的材料的来源更复杂。这篇论文介绍喜玛拉雅的alkali-richporphyries的Pb同位素数据，地区性早中间原生地变质岩地下室和在有一次尝试到的西方的云南的采矿区域的岩石的各种各样的类型在Ninglang抑制Tongchanghenative铜辉铜矿存款的起源。结果证明矿石在Pb同位素组成是相对同类的，暗示简单形成矿石的材料来源。在喜玛拉雅的充满碱的斑岩的Pb同位素的比率的三个集合都比矿石的那些高；地区性的地下室变质岩表演在Pb同位素的比率的大量变化，与矿石铅的同位素组成相当不同；三叠纪的沉积岩和泥石头和淤泥石头的Pb同位素组成内部在晚二叠的HeinishaoFormation的床(相应于向前玄武岩的爆发骑车)在采矿，区域有放射产生的铅的特征并且与矿石铅的同位素组成显著地不同；象矿石一样，在地区性散布的采矿区域和那些的Emeishan暗岩拥有一样的Pb同位素组成，显示出关于他们的分发范围的完全的重叠。从上面，可能性能被排除Tongchanghe存款的ore-formingmaterials从地下室被导出，许多喜玛拉雅的magmaticactivities，等等。形成矿石的材料主要从theEmeishan暗岩被导出，这从而被定义。从可得到的数据，发生在Emeishan暗岩分布式的区域的本国的cupper-chalcocite-typemetallogenesis让一样的金属采购著名计算机生产厂商，这被推出他Tongchanghe沉积物。

简介：本文作者是美国前总统里根的爱女，本文描写了她成长过程中的一段心路历程，作者以生动细腻的笔墨描写了自己如何从努力寻求自我到回到爱的家庭的转变经历。文章以足迹为中心词贯穿始终。读罢此文，父女深情溢于纸上。

简介：自从工业革命的开始，用pyrometallurgical过程的金属精制植物产生了铅(Pb)和镉(Cd)的巨大的排出物。作为如此的污染物质的核心目标，很多土壤现在在普遍区域上被污染，形成对世界范围的公共健康的大威胁。不同于器官的污染物质，Pb和Cd不经历化学或微生物引起的故障并且在他们的版本以后为更长的持续时间在地点保持可能。固定是一在原处使用划算的土壤修正案在污染土壤减少Pb和Cd可获得性的补习技术。在土壤环境的Pb和Cd污染与来源丰富，种形成和联系健康的焦点被考察用各种各样的土壤修正案的风险，和固定选择。通常适用并且为Pb和Cd固定的新兴的划算的土壤修正案包括磷酸盐混合物，liming，动物粪肥，biosolids，金属氧化物，和biochar。这些使不能调动的代理人能把金属污染物质或残余的转移归结为食物网(植物举起并且沥滤到表面下的水)并且他们在重金属固定的长期的可持续性需要另外的评价。

简介：条条道路通向你,无论我迷失何方,你就是那晚星,在夜空中闪闪发亮。

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简介：Hightemperaturesuprerconductor(HTS)currentleadhasanadvantageinreducingelectricpowerconsumptionofarefrigeratorforalargecurrentsuperconductingmagnetsystemsuchasafusiondevice.Afusiondevicerequiresmorethan20pairsoflargecurrentleadsandeachcurrentcapacityisabout60kA.Theconventional60kAcurrentleadneeds100kWelectricpowerforrefrigerationanda2/3reductionisavailablebytheapplicationofaHTScurrentlead.