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150 个结果
  • 简介:Interaction between two polar cold source and tropical ocean heat source effecting global climate changeXieSimei,BaoChenglana...

  • 标签: South POLE North POLE TROPICAL ocean.
  • 简介:Manyadvancedtechnologieshavebeenappliedindevelopingtheautomaticmeasuringdevicefortestingtransversethicknessdifferenceofcold-rollingsteelsheet,suchasthetechnologiesofautomaticcontrol,sensormeasurement,markingidentification,photographiclocation,computerapplicationandinformationtransmission.Thismeasuringdevicecanmeasurethetransversethicknessdifferenceofthesteelplateaccuratelyandquickly,withahighdetectionlevelofautomation.Itisaneffectivedetectionequipmentfortransversethicknesscontrolofsteelplate.Horizontalwidthofsteelplatemeasuring0.8-1.4m,horizontalmeasurementpointpositioningaccuracy±0.02mm,thicknessrange0.2-2.0mm,measurementaccuracywithin±1μm.

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  • 简介:CO2富有的冷弹簧在Wudalianchi发生在活跃火山附近(),东北中国。弹簧富于CO2,与HCO3吗?作为占优势的阴离子并且提高了全部的溶解固体(TDS)的内容(>1000mg/L),Fe2+(>20mg/L),Sr(>1mg/L),并且溶解Si(>20mg/L)。弹簧的逃离并且溶解的气体的作文是类似的。在在Wudalianchi的矿泉的逃离的气体和溶解气体的13C价值变化从?8.77到?4.53并且?8.24到?5.26当18O价值变化从时?10.68到?7.65并且?10.30到?8.84,分别地在弹簧显示逃离的气体和溶解气体的CO2的一样的上面的披风起源。碳和氧同位素分别和water-CO2交换在地下水流动的过程是弱的。4He内容超过5000

  • 标签: 地球化学证据 五大连池 二氧化碳 中国东北 冷泉 气源
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  • 简介:Wedemonstratetheefficientgenerationofcoherentlightinafour-leveldouble-cascadeatomicmediumbycontinuous-wavelow-intensitylaserradiation.Wederivethecorrespondingexplicitanalyticalexpressionsforthegeneratedfour-wavemixing(FWM)field.DependenciesoftheintensityofthegenerateFWMfieldonthepropagationdistance,ontheinput-waveintensity,andonthephotondetuningareinvestigated.Toconclude,wealsogiveabriefdiscussionontheexperimentalrealizationoftheproposedscheme.

  • 标签: 连续波 四波混合 原子相干 干涉效应 非线性光学
  • 简介:Thispaperhasdevelopedandcharacterizedamethodtoproduceavelocity-tunable87Rbcoldatomicsourceforatomicinterferometryapplication.Usingahighspeedfluorescenceimagingtechnology,itreportsthatthedynamicprocessoftheatomicsourceformationisobservedandthesourceperformancesincludingthefluxandtheinitialvelocityarecharacterized.Atunableatomicsourcewiththeinitialvelocityof1.4~2.6m/sandtheatomicsourcefluxof2×108~6×109atoms/shasbeenobtainedwiththebuiltexperimentalsetup.

  • 标签: 荧光成像技术 生成速度 可调谐 子源 表征 寒冷
  • 简介:到有冷忍耐的无热水设备灌溉和它的关联的谷物质量特点的反应从云南省在11个装饰用的梨树米饭变化被学习,中国。结果显示到无热水设备压力的谷物质量特点的反应与米饭变化和谷物质量特点变化了。在无热水设备压力下面,,谷物宽度,白垩的米饭率,白色,1000谷物重量,稻谷率,味道米价值,山峰粘性,马槽粘性,故障粘性和最后的粘性显著地减少了谷物长度宽度比率,头米饭率,碱消化价值,蛋白质内容和挫折粘性显著地增加了。然而,象谷物长度,直链淀粉内容,milled米饭率,山峰粘性时间和粘贴的温度那样的另外的特点没被无热水设备压力显著地影响。重要关联在phenotypic可接受程度和味道米价值,蛋白质内容,山峰粘性和故障粘性的冷反应索引之间被发现。因此,改进云南米饭变化的冷忍耐以便稳定并且改善他们的吃的质量将是很重要的。

  • 标签: 稻米品质性状 粳稻品种 冷水灌溉 云南省 中国 峰值粘度
  • 简介:Ultra-lowcarbon(ULC),cold-rolledsheetsteelsforporcelainenamelingcontainingalloysoftitaniumandboronarestudied.Themicrostructure,mechanicalproperties,inclusions,andprecipitatesofthesheetsteelsareanalyzed.Thehydrogenpermeationtimeofthesheetsteelsas-annealedandafterskin-passedorcold-rolledatdifferentreductionsaremeasured.Itisshownthatthesheetsteelspossessdifferentfeaturesofenamelingpropertiesinhydrogenpermeability,fishscaleresistance,andpinholeresistance.

  • 标签: 冷轧钢板 力学性能 超低碳 硼合金 搪瓷 含钛
  • 简介:Acold-tolerantcultivar,Xiangnuo1,andacold-sensitivecultivar,IR50,wereusedtostudytheinfluenceofchillingonphotosyntheticrateandchlorophyllfluorescenceparametersinriceseedlings.Thephotosyntheticratesdeclineddramaticallyduringchilling,anddecreasedby48.7%and67.5%inXiangnuo1andIR50seedlings,respectively,afterbeingsubjectedtochillingtreatmentfortwodays.ChlorophyllfluorescencemeasurementsshowedthatrelativelyhigherqPandqNPinXiangnuo1weremaintainedtodissipatetheredundantexcitationenergyandprotectthereactioncentersfromchillinjury;accordingly,redundantexcitationenergyaccumulatedlessinthereactioncenters,andantennasystemswerelessinjuredbychillinginXiangnuo1.Onthecontrary,inIR50,qPandqNPdeclinedrapidlywhileExincreased,asthechillingpersisted.ThisresultindicatedthatthereactioncentersandantennasystemsinIR50weredamagedseverelybychilling,whichledtothelowerphotosyntheticrate.

  • 标签: 水稻 光合作用 叶绿素 荧光性
  • 简介:摘要:表面贴装技术一般指SMT贴片。 SMT贴片指的是在PCB基础上进行加工的系列工艺流程的简称,而锡膏是表面贴装技术中关键的辅料,而焊接过程经常出现的冷焊现象也跟锡膏相关。研究者通过对锡膏材料分析、应用参数(焊接回流曲线)的确认,同时结合锡膏在芯片引脚焊盘上焊接后的情况进行微观观察,以及不同表面处理PCB上焊接情况进行对比分析,旨在找出SMT焊接工艺出现“冷焊”现象的根本原因,并通过调整应用工艺条件,避免焊接缺陷,确保电子产品的可靠性。

  • 标签: SMT 锡膏 焊接 冷焊
  • 简介:Theformingmechanismsoflow-latitudecirculationcellsandprecipitationduringanEastAsiancoldsurgehavebeenstudiedbyusingafive-layerprimitiveequationmodel.Numericalexperimentsshowthatinmid-highlatitudes,thepropagationoftheEastAsianwintermonsoonisnearlyadryprocess;inlow-latitudes,theeffectsofcumuluscon-vectionintensifythenortheastmonsoonandnortheasttradewind;however,theyalsopreventtheintertropicalconvergencezone(ITCZ)fromfurthersouthwardinvasion,andstrengthenthemeridionalandzonalcellsoverEastAsia.NumericalresultsalsoindicatethatthewintermonsoonprecipitationinIndonesiaandNorthernAustraliacanexistindependently.BoththeSouthChinaSea(SCS)coldsurgeandtheWestPacificnortheastcross-equatorialtradewindareofimportancefortheformationoftheNorthernAustraliasummermonsoonanditsprecipitation.Numericalresultsshowthatthedevelopmentofcumulusconvection,triggeredbytheSCScoldsurge,isacrucialfactorinformingtheheavymonsoonprecipitationandlow-levelstationarydisturbancesinIndonesiaandBorneo.Thetropicaltopographyandnortheasttradewinddisturbancesonlyaffecttheintensityofprecipitationthere.

  • 标签: NUMERICAL experiment cold surge CIRCULATION CELLS
  • 简介:Anultrahighvacuumchemicalvapordeposition(UHV/CVD)systemisintroduced.SiGealloysandSiGe/Simultiplequantumwells(MQWs)havebeengrownbycold-wallUHV/CVDusingdisilane(Si2H6)andgermane(GeH4)asthereactantgasesonSi(100)substrates.ThegrowthrateandGecontentsinSiGealloysarestudiedatdifferenttemperatureanddifferentgasflow.ThegrowthrateofSiGealloyisdecreasedwiththeincreaseofGeH4flowathightemperature.X-raydiffractionmeasurementshowsthatSiGe/SiMQWshavegoodcrystallinity,sharpinterfaceanduniformity.Nodislocationisfoundintheobservationoftransmissionelectronmicroscopy(TEM)ofSiGe/SiMQWs.TheaveragedeviationofthethicknessandthefractionofGeinsingleSiGealloysampleare3.31%and2.01%,respectively.

  • 标签: GESI 量子阱 UHV/CVD 透射电子显微镜
  • 简介:"GasTransmittingFromWesttoEastProject"issignificant.Itshouldensuretheweldingqualityandsafetyofpipeline.Thetaskisveryarduoustoguaranteethequalityoftheprojectintheconditionoflongline,complexweatherandgeologyfeatures.Inthispaper,theweldingcoldcrackingsusceptibilityofdomesticX-70pipelinesteeladoptedbytheproject,whichisoneofthemostinterestingquestionsofweldingqualityaboutpetrolpipeline,wasstudiedbymeansofobliqueY-groovecrackingtest.Thecrackratioofsurfaceandsectionwastestedundertheconditionsofdifferentweldingmaterialsandpreheattemperature.TheX-70pipelinesteelhasgoodcrackresistance.Theresearchhasimportantvaluefortheconstructionoflarge-scalepipelineengineeringandtheapplicationofdomesticX-70pipelinesteel.

  • 标签: 预加热 倾斜 Y形开槽断裂测试 X-7D管道钢 冷裂磁化率 焊接质量
  • 简介:Recentstudieshaverevealedthatthepropertyofdrugismainlyassociatedwiththebody'ssubstanceandenergyme-tabolism.ThepresentstudyaimedtoevaluatethedrugpropertyofPoria,calledFuling(FL)intraditionalChinesemedicine(TCM),intermsofitseffectsonthesubstanceandenergymetabolisminratmodelsofcold-deficiencyandheat-deficiencysyndromes,comparedwithAconitiLateralisRadixPraeparaia,calledFuzi(FZ)inTCM,withhotproperty,andAnemarrhenaeRhizoma,calledZhimu(ZM)inTCM,withcoldproperty,asreferencedrugs,respectively.Theappearancescore,toeandrectaltemperaturesoftheanimalstreatedwereassessedatdifferenttimepoints.Severalindicesinvivocorrelatedwithsubstanceandenergymetabolism(glucokinas,phosphoglyceratekinase,cytochromecreductase,cytochromecoxydase,andNa^+-K^+-ATPase),endocrinesystem(triiodothyronine,thyroxine,and17-hydroxycorticosteroid),nervoussystem(acetylcholinesterase),andcyclicnucleotidesystemweredetermined.Thechangesinappearancescoreandindicesinvivosuggestedthesuccessfulestablishmentofcold-deficiencyandheat-deficiencysyndromemodels.FZreversedthedecreasedlevelsofindices(substanceandenergymetabolismandendocrinesystem)andalleviatedthesyndromeofcold-deficiencymodel,andZMshowedobviouslytherapeuticeffectonheat-deficiencysyndrome(appearancescore,substanceandenergymetabolism,andendocrinesystem).FLcouldalleviatecold-deficiencysyndromeandraisethedecreasedlevelsofglucokinas,phosphoglyceratekinase,cytochromecreductaseandtriiodothyronineincold-deficiencymodel,buthadnosignificanteffectonheat-deficiencysyndrome.DrugpropertyofFLwasinferredastrendingto"flatandwarm",whichstillneedfurtherstudy.Itwasadvisabletoadoptbothcold-deficiencyandheat-deficiencymodelstostudythedrugswith"flat"property.

  • 标签: Poria Substance METABOLISM Energy METABOLISM Cold-deficiency
  • 简介:Theeffectsofthesubstratetemperatureonthedepositionandmicrostructureofthe304stainlesssteel(SS)coldgasdynamicspraying(CGDS)coatingswereinvestigated.Itwasfoundthatthehighersubstratetemperaturecouldincreasethedepositionrateofthe304SSparticles,eventheoxidefilmsexistedattheinterface.Therewasacriticaloxidefilmwithathicknessof3-4μmwhichcouldbedestroyedbytheimpactedparticles.Themicro-hardnessandmicrostructureofthe304SScoatingsunderdifferentsubstratepreheatingtemperatureswerealmostthesame.

  • 标签: 304不锈钢 基板温度 沉积温度 预热温度 气体动力 组织行为
  • 简介:气候变化形成的威胁使从温度变化潜在地威胁的产地在stenothermal种类有关寒冷和热忍耐扩展知识重要。热限制和基础新陈代谢变化在Pseudodiamesabranickii被调查(双翅目:Chironomidae)在在-20之间的热应力下面并且37????甠汮杯敧??????????????????Δ

  • 标签: 摇蚊幼虫 阿尔卑斯山 成熟 生存范围 死亡率曲线 SCPS
  • 简介:ThemicrostructuresandcrystallizationbehaviorofTi–47at%Ni–3at%Feshapememoryalloywireundertheconditionofseverecolddrawingatroomtemperatureanddifferentpost-deformationannealingprocesseswereintensivelyinvestigatedusingtransmissionelectronmicroscope(TEM)anddifferentialscanningcalorimetry(DSC).ItisindicatedthattheamorphousphaseisdominantintheTi50Ni47Fe3wireafterthecolddrawingof78%arealreduction.Thecriticaltemperatureforrecrystalizationisdeterminedatabout300°C.Theaveragegrainsizegrowsfrom7upto125nmwhenannealingtemperaturerisesfrom300to500°C.Post-deformationannealingprocessexertssignificantinfluenceonthecrystallizationtemperaturewhichclimbsupwiththeincreaseofannealingtemperature.

  • 标签: 结晶行为 严寒 透射电子显微镜 平均晶粒尺寸 退火工艺 扫描量热法
  • 简介:NCEP/NCAR分析数据被用来在在冬在中国乍见陆地做了的热带气旋(Nanmadol和Irma)的二个案例的进化期间调查冷空气和潮湿特征的角色。结果如下被显示出。(1)东亚马槽在早冬季驾驶了冷空气进热带海洋。与在圆周的到海和压力坡度的改进的外面的高移动在相反的方向移动的热带气旋在维持并且加强暴风雨的紧张起了一个作用。当他们仍然在温暖的海表面上时,进热带气旋的底层的弱冷空气的侵入由改进气旋的骚乱加强了他们。当冷空气进眼睛足够强壮、侵入时,温暖的核心在驱散前被损坏并且填满。(2)热带气旋在潮湿流动的一个集中地区被形成,他们的发展能提高水蒸汽集中的骚乱,因此加强潮湿集中地区。然而,当他们在潮湿地区外面时,暴风雨不能获得足够的水蒸汽并且变得弱。在热带气旋处理的冬期间没有强壮的潮湿交通的带。

  • 标签: 热带气旋 冷空气 水蒸汽
  • 简介:BasedonGlobalOceanDataAssimilationSystem(GODAS)andNCEPreanalysisdata,atmosphericandoceanicprocessespossiblyresponsiblefortheonsetofthe2011/12LaNiaevent,whichfollowedthe2010/11LaNiaeven—referredtoasa'doubledip'LaNia—areinvestigated.Thekeymechanismsinvolvedinactivatingthe2011/12LaNiaareillustratedbythesedatasets.ResultsshowthatneutralconditionswerealreadyevidentintheequatorialeasternPacificduringthedecayingphaseofthe2010/11LaNia.However,isothermalanalysesshowobviouslycoldwaterstillpersistingatthesurfaceandatsubsurfacedepthsinoff-equatorialregionsthroughoutearly2011,beingmostpronouncedinthetropicalSouthPacific.ThenegativeSSTanomaliesinthetropicalSouthPacificactedtostrengthenasouthernwindacrosstheequator.ThesubsurfacecoldwaterinthetropicalSouthPacificthenspreadnorthwardandbrokeintotheequatorialregionatthethermoclinedepth.Thisincursionprocessofoff-equatorialsubsurfacecoldwatersuccessfullyinterruptedtheeasternpropagationofwarmwateralongtheequator,whichhadpreviouslyaccumulatedatsubsurfacedepthsinthewarmpoolduringthe2010/11LaNiaevent.Furthermore,theincursionprocessstrengthenedasaresultoftheoff-equatorialeffects,mostlyinthetropicalSouthPacific.ThenegativeSSTanomaliesthenreappearedinthecentralbasininsummer2011,andactedtotriggerlocalcoupledair–seainteractionstoproduceatmospheric–oceanicanomaliesthatdevelopedandevolvedwiththesecondcoolinginthefallof2011.

  • 标签: 赤道东太平洋 入侵过程 LA 冷水 事件 NCEP再分析资料