简介：(Cu60Zr30Ti10)98Y2bulkmetallicglass(Φ4mm×70mm)wasobtainedsuccessfullybycoppermouldcoolingandspraying-casting,andsomesampleswereisothermallyannealedattemperaturesof473and623K,whichwaslowerthantheglasstransitiontemperature(Tg)for1h.Microstructureandpropertiesofas-castandannealedsampleswerestudied.Crystallizationphases(Cu10Zr7andCuZr)wereobservedinannealedsamples,andthespeciesandfractionofthesephasesincreasedwithincreasingannealingtemperature.Mic...

简介：Wereportthemicrostructureevolutionofcopper(Cu)nm-sizedatomicislandsonsiliconeoilsurfacesintheambientatmosphere.Theoriginofthesenearlyfreesustainingatomicislandsisexplainedbyathree-stagegrowthmodel.Thefirststageisthenucleationandgrowthofatomicgranules.Subsequently,thecompactatomicislandsgrowbytheaggregationoftheatomicgranules.Finally,theyadheretoeachotherandformbranchedatomicislands.Duringthecharacteristicevolution,theatomicgranulesreconstructandtheaverageheightoftheatomicislandsincreasesfrom7.0±1.0nmto13.0±1.0nm.ThedetailedevolutionmechanismoftheCuatomicislandsispresented.

简介：ApreliminarystudywasmadeontheantibacterialbehaviorofanewlydesignedCu-bearingtype200stainlesssteelbydifferentmethodsincludingVickershardnessmeasurement,electrochemicaltestandantibacterialtest.TheresultsshowedthatCu-richprecipitationscausedbythesaturatedCuinthesteelmatrixwasnotonlyacrucialfactorforitsexcellentantibacterialcapability,butalsoforitsequivalentcorrosionresistanceasgoodasthecommercialtype200stainlesssteel.

简介：Cu-andCo-substitutedNiZnferritethinfilms,Ni0.4-xZn0.6CuxFe2O4andNi0.5Zn0.5CoxFe2-xO4(0≤x≤0.2),aresynthesizedbysol-gelprocess.ThecrystallographicandmagneticpropertiesofCu-andCo-substitutedNiZnferritethinfilmshavebeeninvestigated.ThelatticeparameterdecreaseswithCusubstitutionandincreaseswithCosubstitution.ThesaturationmagnetizationdecreasesandthecoercivityincreaseswiththeincreaseofCusubstitution.Moreover,thesaturationmagnetizationgraduallyincreaseswiththeincreaseofCosubstitutionwhenx≤0.10,butdecreaseswhenx>0.10.Meanwhile,thecoercivityinitiallydecreaseswiththeincreaseofCosubstitutionwhenx≤0.10,butincreaseswhenx>0.10.

简介：MechanicallyactivatedW-Cupowdersweresinteredbyasparkplasmasinteringsystem(SPS)inordertodevelopanewprocessandimprovethepropertiesofthealloy.Propertiessuchasdensityandhardnessweremeasured.ThemicrostructuresofthesinteredW-CualloysampleswereobservedbySEM(scanningelectronmicroscope).Theresultsshowthatsparkplasmasinteringcanobviouslylowerthesinteringtemperatureandincreasethedensityofthealloy.Thisprocesscanalsoimprovethehardnessofthealloy.SPSisaneffectivemethodtoobtainW-Cupowderswithhighdensityandsuperiorphysicalproperties.

简介：摘要目的研究ICU患者和家属迁移应激反应。方法选择我院于2015.3月-2016.8月间ICU收治的143例患者，168例患者家属进行调查，了解迁移应激对患者及家属造成的影响、阐述迁移应激相关概念、原因、并制定改善迁移应激的护理措施。结果143例患者，其中发生迁移应激反应的患者为59例，分析原因可能与突然转科决定、病房环境、心理情绪、护患沟通较少等有关。结论针对可能导致迁移应激的原因，制定护理计划，包括调整转科模式，注重护患交流，重视心理安抚，做好交接班工作等，改善患者迁移应激情绪。

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简介：Aseriesofthecoconutactivatedcarbons(CAC)basedabsorbentsmodifiedwithCuandCe(Cu/CAC,Cu/Ce/CAC)werepreparedbyimpregnationtechnologyforcarbondioxidecapture.TheadsocrptionequilibriumsofCO2onCu/CACandCu/Ce/CACweremeasured.TheresultsshowedthattheadsorptioncapacityofCO2ontotheactivatedcarbonmodifiedwithCu/Ceincreasedwiththedecreasingtemperatureinthesamepressure.TheadsorptioncapacityofCO2onCu/CACwashigherthanthatoftheblankCAC,andcomparedwiththeCu/CAC,theadsorptioncapacityofCO2ofCu/Ce/CACwiththemassratioofCu/Ce=30wasimprovedat298and303K.Inaddition,theadsorptionequilibriumdataforCO2atvarioustemperatureswasfittedtoLangmuir,FreundlichandD-Risothermmodels.ItwasfoundthattheD-RequationwasthebestmodelforfittingtheadsorptiondataonCu/Ce/CACatdifferenttemperatures.

简介：在之中无铅焊接材料，Sn-Ag-Cu合金有许多优点优异界面的性质和高度例如好弄湿的性质，爬抵抗。在这篇文章，组织和Sn-Ag-Cu材料的焊接性能被调查。二合金的表面形态学被实体镜的显微镜观察并且扫描电子显微镜(SEM)。化学宪法被X光检查精力散的光谱学(版本)检验。Sn-Ag-Cu的机械性质焊接Sn-Cu与那些相比系统地被评估焊接。结果证明Sn-Ag-Cu焊接基于不同焊接垫不同焊接性质。在接口的金属间化合的化合物(IMC)的厚度与老化时间增加。为镀金的垫，有很多IMC图，并且在焊接连接它能减少电的连接的可靠性。Sn-Ag-Cu焊接关节表演在传统的Sn-Cu上的一个优异机械性质焊接。酒窝减少和洞的数字增加因为Sn-Cu0.7合金和Sn-Ag3.0-Cu0.5合金的破裂表面有同类地分布式的许多小尺寸酒窝。

简介：由红外线的激光，表面reducibility和Cu-Cr的吸附力照耀建筑群能被改进，由于相片破碎和激光texturing的相互作用。由有约束力的精力系列和钻系列分析了，铬离子的原子价状态和铜离子分别地在放射以后是+3和+1，它仍然有reducibility释放电子。在对比与在红外线附近(NIR)1064nm并且中间红外线(米尔)在15W的一样的平均产量力量的10600nm激光，在Cu-Cr建筑群的减少的金属百分比显然与纳米在深度被区分开来到微米。在化学plating以后，平均涂层厚度和NIR样品的吝啬平方的偏差是11.61m并且0.30为铜层，和2.69m并且0.08为镍层。结果是比米尔样品的那些好一些的。

简介：这些电影的容易的磁化轴与底层平行，这被发现，并且同样劈啪作响、退火的multilayers的磁性在电影飞机是各向同性的。强制的地H//c是4.8kA/m，remanence-to-saturation磁化M//r/M//s的比率是大约0.73为作为--劈啪作响的样品。H//c和M//r/M//s增加温度，增加退火，特别当退火的温度比400度C高时。这些试验性的结果能被使用联合的铁磁性的交换和coercivity的卡住的理论解释。(编辑作者摘要)13个裁判员。

简介：利用微乳液法制备出ZnS∶Cu纳米微粒.透射电子显微镜(TEM)和动态光散射(DLS)测试结果表明,所得微粒粒径为2～8nm.XRD结果表明,ZnS∶Cu纳米微粒为立方晶型结构,与体材料ZnS的晶型结构一致;在紫外吸收光谱中,ZnS∶Cu纳米微粒吸收峰蓝移.发射光谱表明ZnS∶Cu纳米微粒产生一个位于482nm的绿色发射带.

简介：TheMayangCudeposit,westernHunanisamiddle-scalesandstone-typeCudepositpredominantofnativecopper.Fromanangleofgeologicalintegrativefield,fracturegeochemicalfeaturesarestudidedanddiscussedinthispaper.Infracturestructure,variantregularityandtheratiosofelementcouplesparticipatinginmetallogensisthattheirgeochemicalnaturesaresimilarorstronglycorrelative,revealchanginglawsofmetallogenictemperatureandpressurefieldsandmigratingdirectionofmetallogenicelements.Thetheoreticalstudytalliesmuchbetterwithproductivepractice.Theyaremeaningfultoconductprospectingandexployation.

简介：X－raydiffraction(XRD)anddifferentialscanningcalorimetry(DSC)wereemployedtoinvestigatetheinfluenceofNicontentonthecrystallizationofamorphousZr70Cu30-xNix(atomfrationin%)alloys,ExperimentalresultsshowthatwiththeNicontentincreasingtheactivationenergiesforcrystallizationofamorphousZr70Cu30-xNixalloysincreasecorrespondingly,indicatingthatthethermalstabilityisgreatlyimproved.AlltheDSCtracesofamorphousZr70Cu30-xNixalloysexhibittwoexothermicpeaks,suggestingthatthecrystallizationprocessviaadouble-stageticles,whilethesecondonecorrespondstotheprecipitaionofnano-scaleZr2Niphaseandcrystallizationofresidualamporphousphase,ThemechanismonthecrystallizationofamorphousZr70Cu30-xNixalloyswasdiscussed.

简介：DiffusionofAlinthinfilmnanocrystallineCu(18nm)hasbeeninvestigatedbymeansofsecondionmassspectroscopy(SIMS).Intheexperimentaltemperaturerangesfrom421to773K,thereseem-inglyexiststwodiffusionmechanisms.TheimpurityelementsOandCaresupposedtoaccumulatetothegrainboundariesandinhibitthefastgrainboundarydiffusion.

简介：Threeheterobinuclearcomplexesweresynthesized,namely[Cu(oxpn)Co(L)2](ClO4)2·xH2O(L=2,2’-bipyridyl(bpy),1,10-phenanthroline(phen),and5-nitro-1,10-phenanthroline(NO2-phen)),whereoxpnrepresentsN,N’-bis(3-aminopropyl)oxam-ido.Basedon1R,elementalanalysis,conductivitymeasurementandelectronicspectra,thesecomplexeswerecharacterizedbyanextendedoxamido-bridgedstructurewithCu(Ⅱ)inaplanarenvironmentandCo(Ⅱ)inaoctahedralenvironment.ThesymmetryofthecationisveryclosetoC2v.Thecomplexeswerealsocharacterizedwithvariabletemperature(4~300K)magneticsusceptibility,andthedatawerefitforthesusceptibilityequationderivedfromspinHamilton,H=-2JS1.S2-DSx12byleastsquarestrategy.Theexchangeintegral,J,wasfoundtobe-22.36cm-1(forbpy);-15.45cm-1(forphen);-19.10cm-1(forNO2-phen),indicatingthatthereisaweakantiferromagneticspin-exchangeinteractionbetweenthemetalions.

简介：FeCl3能腐蚀Cu，而铁比铜离子化倾向大，有无矛盾？本文就这一问题进行了讨论。

简介：摘要：利用金相显微镜、电子万能材料实验机对Al-Cu-Mg-Ag合金的微观组织与力学性能进行了测试。结果表明：随着时效时间的延长，合金晶界上的第二相先固溶于基体，又逐渐从基体中析出，合金的晶粒先增大后减小；合金的强度先急剧增加，后趋于平缓，塑性先减小后趋于稳定。

简介：摘要：随着网络技术的不断发展，传统的网络架构已难以满足日益复杂的业务需求。边界网络网关（BNG）作为连接用户和网络的关键设备，其性能与稳定性对于提升整体网络质量具有重要意义。本文提出了一种基于控制面与用户面分离（CU分离）的BNG架构，并对其智能运维进行了探索。首先，介绍了CU分离架构的基本原理和优势；其次，分析了基于CU分离的BNG架构的智能运维需求；接着，设计了智能运维系统的整体架构和功能模块；最后，通过实验验证了智能运维系统的有效性。实验结果表明，该智能运维系统能够有效地提升BNG的性能和稳定性，为网络的智能运维提供了新的思路和方法。

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