简介：1.如图所示，将码货放在玻璃杯的塑料盖板上。用塑料尺快速地敲出塑料板，鸡蛋没有随塑料板一起运动，而是向下落进杯子里，原因是鸡蛋和塑料板原来均处于________状态，塑料板受力改变运动状态后，鸡蛋要保持________状态。鸡蛋下落是受到__________力的作用．

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简介：TheHL-2AisthefirstdivertortokamakinChina.ItsconstructionisbasedonthemaincomponentsofASDEXfromIPPandanentirelynewpowersupplysystemisrequiredtopoweritsmagneticfieldcoilsandtheplasmaheatingsystem.ThemostimportantelectricparametersofHL-2Aaretoroidalfieldof2.8kAwithaflattopT,plasmacurrentof450of5s.

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简介：Therearemanyinneritemsinvacuumvessel,andhundredsofsealsonthevesselbortsintheHL-2Atokamak,soitisdifficulttogetexcellentvacuum.Duringtheengineeringtestin2002,theresultsofquadrupolemassspectrometershowedthatthepartialpressuresofoxygenandH2Owerehigherthannormalvalue,someleaksontheupperMP3coiljacketsandportsealshadbeendetected.Inordertocarryoutgooddischargeexperiment,thegoodvacuumandwallconditionmustbemaintained.

简介：ＯｐｅｒａｔｉｏｎａｎｄＤｅｖｅｌｏｐｍｅｎｔｏｎ２ＭＶＴａｎｄｅｍＡｃｃｅｌｅｒａｔｏｒ￥ＷａｎｇＸｉａｎｙｉ；ＬｉＺｈｅｎｇｆａｎｇ；ＸｕＺｈｅｎｋｉｉａ；ＨａｏＪｕｎｙｕａｎ；ＺｕＫａｉｌｉｎｇ；ＸｕＨｕａｎｇ；ＬｉＨｅｎｇｙｕａｎａｎｄＨｅＪ...

简介：TheapproachofutilizingcombustionsynthesistomakefineparticlesofSiO2,Al2O3andTiO2isaquitemoderntechnology.Throughthechemicalreactioninpost-flameregion,fineSiO2particlescanbeformedwithhighpurityonplatesurface.Therefore,thecombustionsynthesisofSiO2powdersisanimportantareaforfurtherresearchanddevelopment,especiallyfortheapplicationofSiO2inthesemiconductorindustry.Thisinvestigationproposesanexperimentalapproach(i.e.,agas-phasecombustionsynthesis)usingtwodifferentkindsoforganiccompounds,Hexamethyldisilazane(HMDSA)andHexamethyldisioxane(HMDSO),asthesiliconprecursors.ApremixedgasburnerischosenwithC3H8asfuel,airasoxidantandpartoftheairwasusedasthecarryinggastoentrainHMDSA/HMDSOvaporintothecombustiblemixture.ObservationsshowthattheC3H8/airflamechangedcolorfromapale-blueflametolightyellowandthenorangewhendifferentamountsofprecursorswereintroduced.Throughthechemicalreactioninthepost-flameregion,fineSiO2particleswereformedinthegasphaseandthenquenchedandcollectedonanaluminumflatplate.TheobjectiveofthispaperistostudytheeffectsofHMDSOandHMDSAconcentrationsandflametemperaturesonthesynthesisofSiO2particles.

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简介：InHL-2Aexperiments,thescreencapturesoftwareisdevelopedtogetthescreenimagesontheremotecomputers.TheimagescanbesavedintothecorrespondingdirectoryasBMPorJPGfiles.Beforethisprogramstarts,itisnecessarytodetectwhetherthenetworkisblockedornot.Ifthenetworkisokay,thesetupparametersforlasttimewillbeloadedin.Ifthetriggersignalarrives,thesystemstartsworkingaccordingtothegivensetup.Atthesametime,

简介：强壮的苏(2)计量器chromoelectric领域里的费米子粒子对生产以一个古典方法用Boltzmann-Vlasov方程被学习。在古典描述的一个preproduction过程的存在用non-Abelian粒子生产的分发进化被显示出。发现粒子数字密度的分发在二个岛上被集中并且当它演变，在颜色费用范围上显示出一个裂口有趣，最终到达与这个领域的振幅和变化有关的一个稳定的状态。

简介：ThecapacitytocaptureCO2wasdeterminedinseveralstoichiometriccompositionsintheLi2O–Bi2O3system.Thecompounds（Li7BiO6,Li5BiO5,Li3BiO4andLiBiO2phases）weresynthesizedviasolid-statereactionandcharacterizedbyX-raydiffraction,scanningelectronmicroscopyandN2adsorptiontechniques.Thesampleswereheat-treatedattemperaturesfrom40to750°CundertheCO2atmospheretoevaluatethecarbonateformation,whichisindicativeofthecapacityofCO2capture.Moreover,Li7BiO6showsanexcellentCO2capturecapacityof7.1mmol/g,whichisconsiderablyhigherthanthoseofotherpreviouslyreportedceramics.Li7BiO6isabletoreactwithCO2from240°Ctoapproximately660°CshowingahighkineticreactionevenatCO2partialpressurevaluesaslowas0.05.

简介：AnewSnO_2-Fe_2O_3/SWCNTs(single-walledcarbonnanotubes)ternarynanocompositewasfirstsynthesizedbyafacilehydrothermalapproach.SnO_2andFe_2O_3nanoparticles(NPs)werehomogeneouslylocatedonthesurfaceofSWCNTs,asconfirmedbyX-raydiffraction(XRD),transmissionelectronmicroscope(TEM)andenergydispersiveX-rayspectroscopy(EDX).Duetothesynergisticeffectofdifferentcomponents,theassynthesizedSnO_2-Fe_2O_3/SWCNTscompositeasananodematerialforlithium-ionbatteriesexhibitedexcellentelectrochemicalperformancewithahighcapacityof692mAh·g~(-1)whichcouldbemaintainedafter50cyclesat200mA·g~(-1).Evenatahighrateof2000mA·g~(-1),thecapacitywasstillremainedat656mAh·g~(-1).

简介：Thispaperreportsonthelongevityofglycerol-dry(CO2)reformingoverthelanthanum(La)promotedNi/Al2O3catalysts.TheXRDresultsshowedthattheNiparticlewaswell-dispersedinthepresenceofLapromoter.Inaddition,viatheNH3-TPDanalysis,itwasfoundthattheLapromoterhasreducedtheacidityofNicatalystwhichmayhaveexplainedthemitigationofcarbonlaydown.Itwasdeterminedthatthe3.0wt%La-promotedNi/Al2O3catalystpossessedthelargestBETspecificsurfaceareaof97m2g-1.Consequently,ityieldedthebestcatalyticlongevityperformancewithconversionattainedmorethan90%,evenafter72hofreactionduration.Significantly,itcanbeconfirmedthatthepresenceofCO2duringtheglyceroldryreformingwasessentialinreducingcarbondeposition,mostlikelyviagasificationpathway.Thishasensuredastabilityofcatalyticactivityforalongreactionperiod(72h).

简介：WehavesynthesizedandinvestigatedphysicalpropertiesoftwonewquaternarycompoundsGd2CoAl4T2(T=Si,Ge)singlecrystals,whichareisostructuraltoTb2NiAl4Ge2andEr2CoAl4Ge2.Themostimportantstructuralfeatureofthesematerialsistheanti-CaF2-typeCoAl4T2slabs.Thesematerialsshowmetallicbehaviorbelow300Kandthereisalong-rangeantiferromagnetic(AFM)transitionappearingat20and27KforGdCoAl4Ge2andGd2CoAl4Si2,respectively.ResistivityandheatcapacitymeasurementsalsoconfirmthesebulkAFMtransitions.Furtheranalysisindicatesthatthislong-rangeantiferromagnetismshouldresultfromthemagneticinteractionbetweenlocalmomentsofGd^3+ions.

简介：Thereisagrowingsupportforthelowlyingscalarmesonsf0(500),f0(980),a0(980),and(800)tobegenerateddynamicallyfromtheinteractionofpseudoscalarmesons,whilethecaseofthenextsetofscalarresonancesathigherenergies,f0(1370),f0(1710),K0(1430)ismoreaquestionofdebate.Soisthecaseofthetensorresonancesf2(1270),f′2(1525),K2(1430).AnewperspectiveonthesestateshasbeenofferedinRef.[1]wherethef0(1370)andf2(1270)resonancesareshowntobegeneratedfromtheinteractionprovidedbythelocalhiddengaugeLagrangiansimplementingunitarization.Itisshownthattheideaofthenatureofthesestatesasvectormeson-vectormesoncompositestateshasbeentestedinmanyreactions.Yet,thepermanentdiscussionoftheissuedemandsextrachecksforotherobservablesand,inthissense,theweakdecaysbringanewsourceofvaluableinformationthatshouldservetotestdifferentmodels.