简介：通过粉末冶金法制备WC-8（Fe/Co/Ni）硬质合金,研究了不同的铁钴镍配比对WC-8（Fe/Co/Ni）硬质合金性能的影响。结果表明,当Fe：Co：Ni=65：20：15时,合金获得了比普通YG8硬质合金更优异的综合性能,其密度、硬度和抗弯强度值分别达到14.68g·cm（-3）、90.6HRA和1835MPa。

简介：摘要将程序升温方式和阀切时间的优化相互结合到一起，采用此种方式，把微量CO、CO_2从液态烃中分离出来，这样既能够缩短分析时间，还减少了乙烯/丙烯进入TDX-1型色谱柱中。在具体分析过程中，新优化的方法和出厂设置的恒温控制、恒定阀切时间分析样品相比较而言，并没有出现较大程度的基线漂移过低以及色谱柱分析效果降低的情况，从一定程度上提升了分析效率，并且可以延长色谱的使用寿命，对仪器维护有着十分重要的作用。

简介：在这份报纸，活跃光学和合作焦点，分割的镜子的试验性的系统被造。第一，分割的镜子的支持结构被设计，为分割的镜子的试验性的系统满足要求被模拟验证。在这个系统，大散焦并且倾斜/付小费给分割的镜子的错误被观察密度调整并且基于等斜的干扰理论干扰穗形成对照直到defocus并且倾斜/付小费给错误在Shack-Hartmann的侦探范围。然后，Shack-Hartmann被用来测量他们，他们被致动器调整。致动器被活跃光学控制为分割的镜子的好合作焦点认识到靠近环的调整和维护。并且干扰穗被利用验证Shack-Hartmann的侦探精确。在分割的镜子调整的合作焦点以后，倾斜/付小费给剩余表面错误比RMS好；defocus剩余表面错误比RMS好。

简介：CO2capturewithionicliquids（ILs）hasattractedmanyattentions,andmostworksfocusedonabsorptionabilityatambienttemperatures,whileseldomresearchwasconcernedatelevatedtemperatures.ThisnotonlylimitstheCO2absorptionapplicationatelevatedtemperature,butalsothedeterminationoftheoperationconditionoftheCO2desorptiongenerallyoccurringathighertemperature.ThisworkmainlyreportedCO2solubilitiesinILsatelevatedtemperaturesandrelatedpropertieswerealsoprovided.1-alkyl-3-methylimidazoliumbis（trifluoromethylsulfonyl）imide（[CnMIm][Tf2N]）ILswereselectedasphysicalabsorbentsforCO2captureinthisworkduetotheirrelativehigherCO2absorptioncapacitiesandgoodthermalstabilities.Thelong-termstabilitytestsshowedthat[CnMIm][Tf2N]isthermallystableat393.15Kforlongtime.CO2solubilitiesin[CnMIm][Tf2N]weresystematicallydeterminedattemperaturesfrom353.15Kto393.15K.ItdemonstratedthatCO2solubilityobviouslyincreaseswiththeincreaseofpressurewhileslightlydecreaseswithincreaseoftemperature.Asthelengthofalkylchainonthecationincreases,CO2solubilityinILsincreases.Additionally,thethermodynamicpropertiesincludingtheGibbsfreeenergy,enthalpy,andentropyofCO2werealsocalculated.

简介：Asignalwaveformrecoverymethodbasedonthecoprimearrayisinvestigatedtoextractthewaveformofthedesiredsignalfromspatialinterferencesinnarrowbandscenarios.Thedirectionofarrivals(DOAs)ofthedesiredsignalandinterferencesignalsareestimatedwiththecompressivesensingapproachbasedonanglegrids,andthesignalpowertogetherwiththenoisepowerareestimated.Thereafter,amodifiedsteepestdescent(SD)methodisderivedtorecoverthewaveformofthedesiredsignalandinterferencesutilizingtheestimatedpoweranddirections.Therecoveredwaveformofthedesiredsignalistheoutputoftheproposedmethod.Thesituationinwhichthesignalsarenotonthepredefinedanglegridsisalsoconsidered.TheDOAsestimatedpredefinedanglegridsisalsoconsidered.TheDOAsestimatedlikelihood(ML)angleestimation.Comparedtotheexistingbeamformingmethodsonco-primearray,theproposedmethodcanobtainthewaveformofthedesiredsignal.Simulationresultsdemonstratethattheproposedmethodcanachievegoodperformanceinsignalwaveformrecoveryandoutputsignaltonoiseratio.

简介：Co-electrolysisofCO2andH2Ousinghigh-temperaturesolidoxideelectrolysiscells（SOECs）intovaluablechemicalshasattractedgreatattentionsrecentlyduetothehighconversionandenergyefficiency,whichprovidesopportunitiesofreducingCO2emission,mitigatingglobalwarmingandstoringintermittentrenewableenergies.AsingleSOECtypicallyconsistsofanionconductingelectrolyte,ananodeandacathodewheretheco-electrolysisreactiontakesplace.Thehighoperatingtemperatureanddifficultactivatedcarbon-oxygendouble-bondofCO2putforwardstrictrequirementsforSOECcathode.Greateffortsarebeingdevotedtodevelopsuitablecathodematerialswithhighcatalyticactivityandexcellentlong-termstabilityforCO2/H2Oelectro-reduction.Thesofarcathodematerialdevelopmentisthekeypointofthisreviewandalternativestrategiesofhigh-performancecathodematerialpreparationisproposed.UnderstandingthemechanismofCO2/H2Oelectro-reductionisbeneficialtohighlyactivecathodedesignandoptimization.Thusthepossiblereactionmechanismisalsodiscussed.Especially,amethodincombinationwithelectrochemicalimpedancespectroscopy（EIS）measurement,distributionfunctionsofrelaxationtimes（DRT）calculation,complexnonlinearleastsquare（CNLS）fittingandoperandoambientpressureX-rayphotoelectronspectroscopy（APXPS）characterizationisintroducedtocorrectlydisclosethereactionmechanismofCO2/H2Oco-electrolysis.Finally,differentreactionmodesoftheCO2/H2OcoelectrolysisinSOECsaresummarizedtooffernewstrategiestoenhancetheCO2conversion.Otherwise,developingSOECsoperatingat300-600°CcanintegratetheelectrochemicalreductionandtheFischer-TropschreactiontoconverttheCO2/H2Ointomorevaluablechemicals,whichwillbeanewresearchdirectioninthefuture.

简介：ReducingtheanthropogenicCO2emissionsfromfossilresourcecombustionandhumanactivitieshasbecomeoneofthemajorchallengeswearefacingtoday.BeyondthosepracticalapplicationsfortheutilizationofCO2,suchasthesynthesisofsalicylicacid,methanol,urea,NaHCO3-Na2CO3chemicalsandrecentlydevelopedpolycarbonatesynthesis,scientistsarestillseekingnewmaterialsandtechnologiesforefficientcapture,

简介：TheeffortonelectrochemicalreductionofCO2tousefulchemicalsusingtherenewableenergytodrivetheprocessisgrowingfastrecently.Inthisreview,weintroducetherecentprogressesontheelectrochemicalreductionofCO2insolidoxideelectrolysiscells（SOECs）.Athightemperature,onlyCOisproducedwithhighcurrentdensitiesandFaradicefficiencywhilethereactoriscomplicatedandabettersealingtechniqueisurgentlyneeded.Thetypicalelectrolytessuchaszirconia-basedoxides,ceria-basedoxidesandlanthanumgallates-basedoxides,anodesandcathodesareintroducedinthisreview,andthecathodematerials,suchasconventionalmetal–ceramics（cermets）,mixedionicandelectronicconductors（MIECs）arediscussedindetail.Inthefuture,togainmorevalue-addedproducts,theelectrolyte,cathodeandanodematerialsshouldbedevelopedtoallowSOECstobeoperatedattemperaturerangeof573–873K.Atthosetemperatures,SOECsmaycombinetheadvantagesofthelowtemperaturesystemandthehightemperaturesystemtoproducevariousproductswithhighcurrentdensities.

简介：介绍了我公司CO深冷分离装置的工艺流程，根据装置的开车情况，叙述了开车过程中的操作要点及操作注意事项。

简介：摘要：目的：通过对急性重症 CO中毒病人在医院治疗过程中应用高压氧治疗结果进行分析。方法：按照便利抽样原则，将 86例接受高压氧治疗的 CO中毒患者的护理经验进行总结。结果：经过精心护理， 86例中治愈 53例，好转 30例，出现后遗症 8例，死亡 3例，自动出院 1例。结论：高压氧能迅速纠正组织缺氧、改善有氧代谢，促进功能恢复。高压氧能迅速纠正组织缺氧、改善有氧代谢，促进功能恢复。但要早期足程，否则会降低治疗效果。护理质量也是至关重要的，要针对不同特点和不同的治疗阶段开展相应的护理工作，及时总结治疗及护理经验，提高治愈率。

简介：摘要目的研究急性CO中毒迟发性脑病的临床护理方法及效果。方法选取我院2016年10月到2017年4月期间收治的急性CO中毒迟发性脑病患者60例，所有患者均采用针对性护理措施，观察患者的治疗效果。结果经针对性护理后患者未出现死亡病例，其中52例患者基本恢复正常，6例患者生活部分自理但不能正常开展日常活动，2例患者生活无法自理且症状和体征无明显变化。结论急性CO中毒迟发性脑病患者的病情较为严重，发病后应根据实际情况及时给予患者有效的治疗和护理，避免其病情加重而导致死亡。

简介：

简介：Inthisstudy,wepresentanewmethodtocomputeinternalco-seismicdeformationsofahomogeneoussphere,basedonourpreviousapproach(Dongetal.2016).Inpracticalnumericalcomputations,weconsiderastrike-slippointsourceasanexample,andcomputetheverticalco-seismicdisplacementondifferentinternalsphericalsurfaces(includingtheEarthsurface).Numericalresultsshowthattheinternalco-seismicdeformationsaregenerallylargerthanthatontheEarthsurface;especially,themaximumco-seismicdisplacementappearsaroundtheseismicsource.Theco-seismicdisplacementsareoppositeinsignfortheareasoverandbeneaththepositionoftheseismicsource.Theresultsalsoindicatethatthecurvatureeffectoftheinternaldeformationisprettylarge,andlargerthanthatontheEarthsurface.Theresultsindicatethatthedislocationtheoryforasphereisnecessaryincomputinginternalco-seismicdeformations.

简介：Wesynthesizedonequaternaryammoniumpolymericionicliquids（PILs）P[VBTHEA]ClandthreeimidazoliumPILsofP[VEIm]Br,P[VEIm]BF4,P[VEIm]PF6byfree-radicalpolymerizationinsolution.ThesePILswerecharacterizedbyFT-IR,1H-NMR,13C-NMR,TGA,XRDandSEM.TheirCO2adsorptioncapacitiesweremeasuredunderdifferentpressuresandtemperaturesbyconstant-volumetechnique.ItwasobservedthatquaternaryammoniumPILsofP[VBTHEA]ClhavehigheradsorptioncapacityforCO2thanthoseimidazoliumPILs,followingP[VBTHEA]Cl>P[VEIm]PF6>P[VEIm]BF4>P[VEIm]Br,whichmaybeascribedtohigherpositivechargedensityonammoniumcationthanthatonimidazoliumcationandthusstrongerinteractionwithCO2,consistentwiththeresultsfromdual-modeadsorptionmodelthatammoniumPILshavemuchhigherCO2bulkabsorptionthanimidazoliumPILs.CO2adsorptioncapacityofP[VBTHEA]Clis9.02mg/gunder295Kand1bar,whichiscomparabletothatofsomeotherPILs,andismuchhigherthanthatofthecorrespondingILsmonomer.ThesePILshavegoodadsorptionselectivityforCO2overN2andregenerationefficiency.

简介：Exosomes是endocytic起源的nanoparticles，由由他们调制cell-to-cell通讯的能力的优点正在吸引增加的注意的无数房间人口藏匿了。他们也在许多免疫学的问题正在吸引注意，包括autoimmunity和，特别地调整cytokine和chemokine激活的他们的能力。主要胆汁的肝硬化(PBC)被认为一个模型自体免疫疾病，它对胆汁的上皮的房间有高度集中的细胞毒素的回答。我们与PBC和30健康控制(HC)从29个病人从血浆孤立exosomes，并且用一个前vivo系统在mononuclear房间人口在co-stimulatory分子表示和cytokine生产上学习了这些exosomes的效果。我们也与HCexosomes相比在PBC识别了microRNA(miRNA)人口。我们此处报导尽管exosomes不改变cytokine生产，他们显著地确实在介绍抗原的人口上改变co-stimulatory分子表示。进一步，我们在CD14+单核白血球上表明了那CD86起来调整的表情，而在CD11c+上起来调整的CD40由从有PBC的病人的exosomes的树枝状的房间。另外，有在有PBC的病人的传播exosomes的miRNA表示的差别。这些数据基于co-stimulatory分子玩的观察有重要重要性在T房间激活的规定的一个微分角色。我们的观察显示从PBC的异常exosomes有选择地在介绍抗原的房间的不同子集导致co-stimulatory分子的表示。这些改变可以在自体免疫的肝疾病的致病包含。

简介：1）碳、硅同为第ⅣA族元素且在周期表中位置相邻,为什么CO_2为气态,而SiO_2则为坚硬的固态？碳元素与硅元素的原子结构相似,故其单质及化合物在物理、化学性质方面有很多相似之处.比如,其单质均可形成微观四面体结构（金刚石与晶体硅）;其简单氢化物分子均为正四面体型结构;最高价氧化物的水化物均为弱酸等.

简介：Thomsonscatteringimaging（TSI）isproposedandexperimentallydemonstratedtoobservethefinestructureofthelaserwakefield.ByThomsonscatteringaco-propagatinglaserpulse,weobtainc/earimagesindicatingthatthewakefieldislikeanacalephswimmingbehindthepumplaser.Thewavelengthofthewakefieldobservedatdifferentelectrondensitiesagreeswellwiththetheory.Sincenomathematicstransformationisinvolved,TSIcouldbepotentiallyusedasanonlinemonitorforfuture＇tabletop＇plasmaaccelerators.

简介：Amine-silicacompositematerialsforpost-combustionCO2capturehaveattractedconsiderableattentionbecauseoftheirhighCO2uptakeatlowCO2concentrations,excellentCO2captureselectivityinthepresenceofmoisture,andlowerenergyrequirementsforsorbentregeneration.Thisreviewdiscussestherecentadvancesinamine-silicacompositesforCO2capture,includingadsorbentpreparationandcharacterization,CO2captureunderdryandmoistureconditionsatdifferentCO2partialpressures,sorbentregeneration,andstabilityaftermanycyclicsorption-desorptionruns.

简介：TheadsorptionofCOonPtgroupmetals,asamostfundamentalelementaryreactionstep,hasbeenwidelystudiedincatalysisandelectrocatalysis.Particularly,thestructuresofCOonPt(111)havebeenextensivelyinvestigated,owingtoitsimportancetobothfundamentalandappliedcatalysis.Yet,muchlessisknownregardingCOadsorptiononaPt(111)surfacemodulatedbysupportedoxidenanostructures,whichisofmorerelevancetotechnicalcatalysis.Wethusinvestigatedthecoverage-dependentadsorptionofCOonaPt(111)surfacepartiallycoveredbyFeOxnanostructures,whichhasbeendemonstratedasaremarkablecatalystforlow-temperatureCOoxidation.Wefoundthat,duetoitsstrongchemisorption,thecoverage-dependentstructureofCOonbarePtisnotinfluencedbythepresenceofFeOx.But,oxygen-terminatedFeOxnanostructurescouldmodulatethediffusivityofCOattheirvicinity,andthusaffecttheformationoforderedCOsuperstructuresatlowtemperatures.Usingscanningtunnelingmicroscopy(STM),weinspectedthediffusivityofCO,followedthephasetransitionsofCOdomains,andresolvedthemoleculardetailsofthecoverage-dependentCOstructures.OurresultsprovideafullpictureforCOadsorptiononaPt(111)surfacemodulatedbyoxidenanostructuresandshedlightsontheinter-adsorbateinteractiononmetalsurfaces.

简介：