简介：DiwabasinsandstonetypecopperdepositsofChinaplayanimportantroleeconomically.Thede-positsarclocatedalongthefringeofadiwabasin.Itsore-bearjngstrataaredepositedinaninlandbasinandcomposedofdarkenedandbIeachedbeds-Bccauseofdiwabasin’sactivity,e1evationandsubsi-dencemovementsoccurfrequent1y.Especially,thcf

简介：铜绑定，抛锚膜的、细胞的prion蛋白质(PrPC)有二个组成的劈开地点生产不同N终端和C终端碎片(N1/C1和N2/C2)。用表示也人的PrPC，鼠标PrPC或鼠标PrPC的RK13房间带3F4epitope，这研究在endoproteolytic劈开和一个通常认为的PrPC函数上探索了PrPC主要顺序的影响，地图kinase信号transduction，响应外长的铜与或没有使不安的膜环境。PrPC主要顺序，特别在N1/C1劈开地点附近，看起来在这个地点和细胞外的调整信号的kinase1/2(ERK1/2)phosphorylation影响解朊作用的基础层次，与处理激活增加与基础ERK1/2表明一种反的关系。人的PrPC独自响应铜显示出增加的N1/C1劈开，由特定的p38和JNK/SAPKphosphorylation伴随了。到加扣押胆固醇的抗菌素filipin的铜的联合暴露导致了一只老鼠信号蛋白质phosphorylation的PrPC特定的实质的增加，由N1/C1劈开的增加伴随了。怀有人的N1/C1劈开地点的老鼠PrPC基础地并且响应铜假定更似人类的侧面并且改变了膜环境。我们的结果证明在N1/C1劈开地点附近的PrPC主要顺序影响在这个地点处理的endoproteolytic，它显得连接了基础地并且响应铜印射kinase信号transduction。进一步，主要顺序看起来响应外长的刺激在PrPC相关的信号transduction的忠实上授与N1/C1劈开和膜完整的相互的依赖。

简介：由肉苍蝇Boettcherisca游隼铜(Cu)完成累积一(R.-D.)(双翅目：Sarcophagidae)在ectoparasitic黄蜂Nasoniavitripennis(沃克)上(Hymenoptera：Pteromalidae)被与400μg/g和800μg/g饮食的最后的Cu集中暴露主人幼虫到污染食谱试验性地调查新鲜重量(DFW)分别地。结果证明Cu能在小数量沿着食物链被转移到第二等的消费者(parasitoids)，导致象肥沃一样的parasitoid生长和开发(身体重量和发展持续时间)上的否定效果(每女性后代数)。铜暴露也从污染Cu的主人蛹禁止了parasitoids的vitellogenesis。这被建议N的vitellogenesis的减少的肥沃和抑制。vitripennis源于穷人招待营养的状态而非从Cu的直接效果强调。

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简介：闪锌矿(110)的电子性质出现忍受Fe，Mn和Cd杂质在闪锌矿的铜激活上用杂质的密度功能的理论，和效果被计算被调查。计算结果显示Fe和Mn杂质缩小闪锌矿表面的乐队差距并且导致变到传导乐队的费密水平。由Fe3d和Mn3d组成的杂质层次在乐队差距的轨道的出现对从原子价乐队的电子转移有益到传导乐队并且支持表面电导率和电气化学的活动。Fe和Mn杂质不能被Cu原子代替的结果表演，它为Cu原子，因此忍受Fe和忍受Mn闪锌矿减少交换地点(Zn)是难的被铜激活。Cd杂质在闪锌矿表面的电子结构上有小效果；然而，Cd原子被Cu原子容易代替，并且这是忍受Cd闪锌矿能容易被漂浮的原因。

简介：Thestructureandbindingenergyofcopperclustersofthesizerange70to150werestudiedbyusingtheembeddedatommethod.Thestabilityofthestructureoftheclusterswasstudiedbycalculatingtheaveragebindingenergyperatom,firstdifferenceenergyandseconddifferenceenergyofcoppercluster.Mostofthecopperclustersofthesizen=70-150adoptanicosahedralstructure.Theresultsshowthatthetrendsareinagreementwiththeoreticpredictionforcopperclusters.Themoststablestructuresforcopperclustersarefoundatn=77,90,95,131,139.

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简介：Copper（Ⅱ）oxideinvaryingratioswascombinedwitheitheranalumina-basedcement（Al300）,orCaOderivedfromlimestoneassupportmaterialinamechanicalpelletiser.Thisproductionmethodwasusedtoinvestigateitsinfluenceonpossiblemechanicalandchemicalimprovementsforoxygencarriersinchemicalloopingprocesses.Thesematerialsweretestedinalab-scalefluidisedbedwithCOorCH4asareducinggasat950°C.Asexpected,theoxygencarrierscontainingagreaterratioofsupportmaterialexhibitedanenhancedcrushingstrength.Oxygencarrierscomprisedofa1:3ratioofsupportmaterialtoactiveCuOexhibitedincreasedcrushingstrengthbyaminimumof280%comparedtopureCuOpellets.AlloxygencarriersexhibitedahighCOconversionyieldandwerefullyreduciblefromCuOtoCu.Fortheinitialredoxcycle,Al300-supportedoxygencarriersshowedthehighestfuelandoxygencarrierconversion.Thegeneraltrendobservedwasadeclineinconversionwithanincreasingnumberofredoxcycles.InthecaseofCaO-supportedoxygencarriers,allbutoneoftheoxygencarrierssufferedagglomeration.TheagglomerationwasmoresevereincarrierswithhigherratiosofCuO.OxygencarrierCu25Al75（75wt%aluminatecementand25wt%CuO）,whichdidnotsufferfromagglomeration,showedthehighestattritionwithalossofapproximately8%ofitsinitialmassover25redoxcycles.ThereducibilityoftheoxygencarrierswaslimitedwithCH4incomparisontoCO.CH4conversionwere15%-25%and50%forCu25Ca75（25wt%CuOand75wt%CaO）andCu25Al75,respectively.Cu25Ca75demonstratedimprovedconversion,whereasCu25Al75exhibitedatrendingdecreaseinconversionwithincreasingredoxcycles.

简介：ThePulangporphyrycopperdeposit,locatedintheGezantectonic-magmaticarcandsouthoftheYidunislandarc,southwestofSanjiangmetallogenicbeltinYunnanprovince,isasuper-largeporphyrycopperdeposit.Duringrecentdecades,thePulangdeposithasattractedwideattentionamonggeologistsbothathomeandabroad.Manypreviousresearcheshavediscussedits更多还原

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简介：HeavymetalconcentrationsweremeasuredintheChangjiangEstuaryanditsadjacentwaters.ResultsfromasystematicsurveyinApril2002toMarch2003indicatethattherangesoftheconcentrationsofdissolvedcopper,lead,zincandcadmiuminthestudywatersare1.01~6.86,0.10~0.39,3.17~9.12and0.011~0.049μg/dm3,respectively.Similartozinc,thebehaviorofdissolvedcopperwasessentiallyconservative,buthighscatterhasbeenobservedforhighsalinitysamples,whichcanbeattributedtothedecompositionormineralizationoforganicmatterbybacteria.Dissolvedleadmayhaveactivebehaviorwithanadditionathighsalinity.Overallconcentrationsofdissolvedcadmiumincreasewithsalinity.Themeanvaluesofthesedissolvedmetalscalculatedforthesurfacewaterswerehigherthanthoseforthemiddleandbottomones.Externalinputsofdissolvedheavymetalstothesurfacewaterswerethelikelyexplanationforthesehighervalues.Themaximumseasonalaveragevaluesofdissolvedcopperandzincwerefoundinsummer,reflectinghigheramountsofriverineinputinthisseason.Incontrast,themaximumseasonalaveragevaluesofdissolvedleadandcopperwerefoundinwinterandthelowestonesinsummer,respectively,whichmightbeassociatedwithacombinationoflowconcentrationwithheterogeneousscavenging.ConcentrationsofthesedissolvedmetalsfoundfortheChangjiangEstuaryfallintherangeobservedfortheotherestuariesbutarenoticeablyhigherthanthosefromuncontaminatedrivers,exceptforcadmium.ComparedwithobservationsfortheChangjiangEstuaryinthelasttwodecades,itisclearthattheChangjiangestuarinewatershasbeencontaminatedwithcopper,lead,zincandcadmiumduringChina'sindustrialization,butconcentrationsofthemhavedecreasedinthelastfewyears.

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简介：Lanping-SimaoMesozoic-CenozoicdiwabasinisoneoftheimportantpolymetallicmetallogeneticbeltsinSanjiangarcaUptonow,morethan20mediumandsmall-sizedcopperdepositsand200cop-perorespotshavebeendiscoveredinred-beds(alittleofthemoccurredinPaleozoiestrata).TheymightbeclassificdintothreeorigintyPcs:scdimentary-d

简介：NanofluidswerepreparedbydispersingCunanoparticles(~20nm)inn-tetradecanebyatwo-stepmethod.Theeffectivethermalconductivitywasmeasuredforvariousnanoparticlevolumefractions(0.0001-0.02)andtemperatures(306.22-452.66K).TheexperimentaldatacompareswellwiththeJangandChoimodel.Thethermalconductivityenhancementwaslowerabove391.06Kthanforthatbetween306.22and360.77K.Theinterfacialthermalresistanceincreasedwithincreasingtemperature.Theeffectivethermalconductivityenhancementwasgreaterthanthatobtainedwithamoreviscousfluidasthebasemediaat452.66KbecauseofnanoconvectioninducedbynanoparticleBrownianmotionathightemperature.

简介：TheYongpingcoppcrdepositissituatedinYansbanCounty,JjangxiProviencc,SouthChina.It’sacopper,sulphur,tungstenandmolybdenumpolymetallicdeposit,andhostedbytheCarboniferousvolcanicsedAnentaryrocksinwhicbYanshaniangraniticporphyries(l35-l6lMa)intruded.Ourstud-jesrevealthemajorconstrainingfactoronmetallogen

简介：Theaqueouspolymerizationofmethylmethacrylateintiatedbycopperpolypropylene-basedpoly(oxime-imidodiacetate)(P-Cu)-sodiumsulfitesystemhasbeeninvestigated.Theoverallrateofpolymerization(Rp)wasfoundtobeRp=5.8×10^12e^-84.1KJ/RT[MMA]^1.4[P-Cu]^0[Na2SO3]^0.50Amechanismof“coordination-protontransfer”fortheproductionofinitiatingspecieswasproposedanddiscussed.

简介：有bimodal粒子尺寸的钻石/铜composites的热传导性被学习。composites与40和100颗m尺寸钻石的混合物通过液体铜的压力渗入被准备进钻石预先形成。有钻石的不同coarse-to-fine体积比率的预先形成的渗透被调查。有bimodal尺寸分发的钻石/铜composites的热传导性与从Chu开发的一个分析模型导出的理论价值相比。钻石/铜composites能到达更高热的传导性，他们的表面粗糙能被使用bimodal钻石粒子尺寸改进，这被预言。

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简介：氧化物分散加强了铜合金由于他们热、电的传导性，高温度的力量和微观结构稳定性的优秀联合是吸引人的。迄今为止，到他们的制造的state-of-art是内部氧化(IO)过程。在这份报纸，氧化铝分散加强了铜(ADSC)Cu-2.5vol%Al2O3的名字的作文的粉末被反应milling(RM)生产是一个在原处煤气固体的反应过程的过程。为电、机械的性质调查的体积ADSC合金被sintering并且此后获得热挤出。在热巩固过程以后，充分使增加密度的粉末协议能被获得。单个-Al2O3阶段和侧面拓宽效果根据X光检查衍射(XRD)的结果是明显的；ADSC的HRB坚硬能象95一样高；结果应该在铜矩阵在脱臼和谷物边界上被归因于nano-Al2O3的卡住的效果。ADSC合金的电的传导性是55%IACS(国际退火铜标准)。热巩固的材料的房间温度坚硬近似在在900点为1h退火以后被维持