简介：

简介：

简介：植物名称及其所对应的原植物,在世界各国或地区均大量存在同名异物或同物异名的现象,极易造成混淆,不可不辨。以＂lily＂为研究对象,利用http：∥scholar.google.com和http：∥apps.webofknowledge.com文献检索平台,查询国内外使用＂lily＂作为关键词或主题词的文献,分别得到534000条和11734条检索信息,然而,以＂lilium＂为关键词和主题词进行二级检索时,却只能得到27000条和6087条检索信息。在此基础上,对这些含有＂lily＂的词或词组进行归类分析,结果显示：＂lily＂本意为百合属Lilium植物,但是英文名称中含有＂lily＂的词或词组并非都是百合,其代表的含义十分广泛,不仅包括百合科、秋海棠科、石蒜科、天南星科及人工杂交种等多种植物,而且在某些动物名称中也含有＂lily＂。可见,含有＂lily＂的英文词或词组所代表的名称和原植物较多,而且十分复杂,在文献检索以及相关研究中应注意区分。

简介：Lily是百合花的意思。在英语国家流传着这样一个故事，讲的是一个小女孩收到了父亲送给她的神秘礼物，小女孩满心欢喜地打开却发现是一个很丑陋的球茎。小女孩并不喜欢，于是顺手把球茎扔出了窗外。第二年春天，女孩房子的周围开满了美丽的百合花，女孩终于感受到了这份礼物的价值。Lily老师正是从这个故事中得到启发：即使自己不被别人看好，只要能够坚持自己正确的信念，是金子终究会发光!凭着这份执着与坚韧，Lily老师和她的Lily思维英语就像故事中的百合花一样，终于绽放出了美丽的花朵．获得了事业的成功。

简介：

简介：细菌和植物可将二氧化碳转化为更有用的化合物，但人类仍在努力通过实践实现这一挑战。现在，面对这一方向开发的催化系统，以高的周转率使CO2还原为CO已迈出新的一步。

简介：Inthispaper,theauthorspointoutanddemonstratethedifferenceoftheconceptsconcerningco-satisfiableandco-validbetweenonefirst-orderlanguageandtwofirst-orderlanguages,andputforwardtheconceptsaboutuniformco-identicaltruthanduniformco-satisfiability.Thussometheoremsinthebook“ACourseinMathematicalLogic”,writtenbyJ.L.BellandM.Machover,arecorrected.

简介：介绍了Ｐｕ－Ｉ型吸附剂的开发和性能，对它在少量ＣＯ、ＣＯ２脱除和ＣＯ制取工艺的应用也进行了分析。

简介：Twoseriesofmixedoxides,CoAlMandMgAlM(M=Cr,Mn,Fe,Co,Ni,Cu),werepreparedbycalciningtheircorrespondinghydrotalcite-likecompounds(HTLc).TheratioofMg:Al:M(orCo:Al:M)was3:1:1.ThecatalyticactivityofallsamplesforthereactionofNO+COwasinvestigated.TheresultsshowedthattheactivityofCoAlMwasmuchhigherthanthatofMgAlM.ThestructureandthepropertyofredoxwerecharacterizedbyXRDandH2-TPR.TheresultsindicatedthatonlyMgOphasewasobservedaftercalciningMgAlMhydrotalcites,andthetransitionmetalsbecamemorestable.Thespinel-likephaseappearedinallofCoAlMsamplesafterthecalcination,andthetransitionmetalswerechangedtobemoreactive,andeasilyreduced.TheactivitiesofthreeseriesofmixedoxidesCoAlCuobtainedfromdifferentpreparationmethods,differentratioofCo:Al:Cuandatdifferentcalcinationtemperatures,werestudiedindetailforproposingthemechanismofreaction.TheabilityofadsorptionofNOandCO

简介：Theexchangecouplingattheferromagnetic/antiferromagnetic(FM/AFM)interfaceisinfluencedbyboththemagneticstructureandthecrystallinemicro-structure.Co/FeMn/Cothinfilmswith0.4nmPtspacerlayerinsertedintotheCo/FeMnandFeMn/Cointerfacerespectivelyweredepositedbymeansofmagnetronsputtering.ThetwointerfacesuponandbeneaththeFeMnlayershowdistinctbehaviorsbeforeandafterthePtspacerinserted.ThereisaremarkableshrinkoftheinterfacialuncompensatedspinswithintheFeMnbottominterfacialmonolayers,whereasarelaxationofthepinningstrengthoftheFeMninterfacialspinsalongtheout-of-planedirectionoccursatthetopinterface.XRDanalysisindicatesthePtlayerupontheFeMnlayerformsanfcc(002)texture,implyingthemagneticdiscrepancybetweenthetopandbottomFeMninterfaceshascrystallinestructuralorigins.

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：TheCurietemperatureof(Nd1-xPrx)2Fe14CoyBcompounds（x=0,0.2,…,1.0andy=O,2,4,6,14）hasbeendeterminedwithACinitialsusceptibilitymeasurement.ItwasfoundthatthevariationsofCurietempera-turewithxisnotlinearfory=0and14,whereasitislinearforothervaluesofy.Thelatticeconstantsof(Nd1-xPrx)2Fet14BweredeterminedbyusingX-raydiffraction.Thelatticeexpansionwasmostlyalongthecaxis,whereasthatalongthea-axisremainedpracticallyzeroforthewholeseries.ItissuggestedthatPratomsmayshowsitepreferenceinR2M14Bcompounds（M=FeorCo）.DuetothesubstitutionofCoforFe.thetendencyofsitepreferenceofPrbecomeslesspronounced,whichmaybeattributedtothedecreaseofdiffer-enceofcrystalelectricfield（CEF）actingonthetworareearthsiteswiththeintroductionofCoorFe.Incon-trasttothatofthePratoms,thesitepreferenceofCoiu（Nd（1-x）Prx）2Fe（14-y）CoyBcompoundsdoesnotdependonthecompositionoftherareearthsublattice（R=NdorPr）.

简介：COandformaldehyde(HCHO)oxidationreactionswereinvestigatedovermesoporousAg/Co3O4catalystspreparedbyone-pot(OP)andimpregnation(IM)methods.Itwasfoundthattheone-potmethodwassuperiortotheimpregnationmethodforsynthesizingAg/Co3O4catalystswithhighactivityforbothreactions.ItwasalsofoundthatthecatalyticbehaviorofmesoporousCo3O4andAg/Co3O4catalystsforthebothreactionswasdifferent.AndtheadditionofsilveronmesoporousCo3O4didnotalwaysenhancethecatalyticactivityoffinalcatalystforCOoxidationatroomtemperature(20C),butcouldsignificantlyimprovethecatalyticactivityoffinalcatalystforHCHOoxidationatlowtemperature(90C).Thehighsurfacearea,uniformporestructureandtheprettygooddispersiondegreeofthesilverparticleshouldberesponsiblefortheexcellentlow-temperatureCOoxidationactivity.However,forHCHOoxidation,theadditionofsilverplayedanimportantroleintheactivityenhancement.AndthesilverparticlesizeandthereducibilityofCo3O4shouldbeindispensableforthehighactivityofHCHOoxidationatlowtemperature.

简介：

简介：FormerlyNo.713Factory,HuaxingMetallur-gical&ChemicalCo.underChinaNuclearIndustryGeneralCorporationwasestablishedin1958andputintooperationin1962.ThecorporationislocatedinShangrao,JiangxiProvinceandwasoriginallydesignedtoproducerawmaterialsformillitaryuse.Inkeepingupwiththepaceofthedevelopmentofthenationaleconomy,

简介：纽约即将举办一场海难纪念品拍卖会，此次拍卖会将是泰坦尼克号遗物有史以来最大规模的拍卖，

简介：

简介：问:能不能用硫酸代替盐酸?为什么?答:不能。实验室制取CO2一般采用稀盐酸和大理石(或石灰石,下同)反应,因为生成的氯化钙易溶于水,从而脱离大理石固体表面,使反应能得以继续进行。而硫酸与大理石反应,反应后生成的硫酸钙则会沉积在大理石固体表面,会

简介：Dopantsanddefectsareimportantinsemiconductorandmagneticdevices.Strategiesforcontrollingdopinganddefectshavebeenthefocusofsemiconductorphysicsresearchduringthepastdecadesandremaincriticaleventoday.Co-dopingisapromisingstrategythatcanbeusedforeffectivelytuningthedopantpopulations,electronicproperties,andmagneticproperties.Itcanenhancethesolubilityofdopantsandimprovethestabilityofdesireddefects.Duringthepast20years,significantexperimentalandtheoreticaleffortshavebeendevotedtostudyingthecharacteristicsofco-doping.Inthisarticle,wefirstreviewthehistoricaldevelopmentofco-doping.Then,wereviewavarietyofresearchperformedonco-doping,basedonthecompensatingnatureofco-dopants.Finally,wereviewtheeffectsofcontaminationandsurfactantsthatcanexplainthegeneralmechanismsofco-doping.

简介：案例1：1995年元月6日，韦某，男，32岁，与爱人在一房间内同宿，当晚在房间内有一炭火取暖炉，早上6时左右其爱人（30岁）感胸闷、恶心、四肢无力，并起床呕吐少量胃内容物，同时发现丈夫已死亡。现场房间12m^2，门窗密闭较好，现场整齐，床前有一炉已燃尽的炭灰，床上有呕吐物，尸体为男性，全身赤，尸斑呈暗红色，尸表未见损伤，肌肉、肝、肺、肾等呈浅红色，血液呈红色流动性，提取心血作CO定量检验为50％。