简介：用同步辐射角分辨偏上光电子谱对K／Ru(101^-0)表面上吸附的CO分子轨道的对称性测量发现：结合能在11.2eV的CO－4α1（4σ）分子轨道对s偏振光（在沿＜12^-10>的入射面）是禁戒的。结果表明由于K的强烈影响，CO的分子轨道重新排列（sp^2杂化）。根据选择定则和分子轨道的对称性说明，sp^2再杂化的CO分子吸附的桥位取向是<12^-10>晶向。

简介：（CO＋Cs)/Ru(101^-0)共吸附的体系中，CO分子由于受Cs原子强烈影响，分子轨道发生重新杂化组合。CO分子原来在清洁Ru(101^-0)表面上结合能位于7.5eV处相重叠的5σ和1π轨道对应谱峰分裂为两峰，结合能分别位于6.3和7.8eV处，其中6.3eV处的谱峰来自CO分子1π轨道的一支，它显示出该分子轨道沿衬底＜0001＞晶向的镜面反对称性。CO分子1π轨道的另一支和5σ轨道在结合能7.8eV处相重叠。

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简介：SupposethatCisthecomplexplaneandkisanon-negativeinteger.DefinefunctionsNk-(x)=|x|kifkisevenandNk(x)=x|x|k-1ifkisodd.SomeapproximationpropertiesofNk-(x)’sisdiscussedandanewexampleofaTchebycheffsystemisgivenout.

简介：摘要本文通过K101及K102机组仪表改造的目的及原因、检修的范围及具体内容、技术改造质量及费用控制措施以及技术改造存在的风险评估及HSE注意事项进行了深入浅出的分析，希望对相关行业工作者提供一定的帮助。

简介：摘要： 本文通过 K101及 K102机组仪表改造的目的及原因、 检修的范围及具体内容、 技术改造质量及费用控制措施以及 技术改造存在的风险评估及 HSE注意事项进行了深入浅出的分析，希望对相关行业工作者提供一定的帮助。

简介：利用角分辨紫外光电子谱对乙烯和乙炔气体在Ru(1010)表面的吸附及与K的共吸附的研究结果表明：当衬底温度超过200K，乙烯即发生脱氢反应，σCH和σCC能级均向高结合能方向移动。在室温下，σCH和σCC能级位置与乙炔在Ru(1010）表面的吸附时的分子能级完全一致。乙烯发生脱氢反应后的主要产物为乙炔。衬底温度从120K到室温，Ru(1010）表面上乙炔的σCH和σCC能级均未发现变化。室温下乙炔仍然可以在Ru(1010）表面以分子状态稳定吸附。在有K的Ru(1010）表面上，室温时σCC谱峰几乎。碱金属K的存在促进了乙炔的分解。

简介：In2010,theBESCollaboration[1]foundaclearenhancementintheK0K0massdistributionintheJ=ψ!ηK0K0decay.SuchanenhancementisusuallyasignatureofanL=0resonancearoundthreshold,whichinthiscasewouldcorrespondstoanh1statewithquantumnumbersIG(JPC)=0??(1+??).Thish1statewaspredictedbytheChiralUnitarytheoryintheKKinteraction.Becauseoftheconversationlaw,thisstatecanonlydecaytoK0K0channel,andcanbestudiedefficientlyintheJ=ψ!ηK0K0decay.

简介：JEFC教材第二册第1课中有两句话。

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简介：本文得到下面结论:设n,b,r为正整数,丢番图方程sumfromk=0to∞(1/n)(b-21k)~r=sumfromk=1to∞(1/n)(b+21k)~r仅有正整数解r=1,b=21n(n+1)和r=2,b=42n(n+1)

简介：摘要本文利用用二维颗粒流理论模拟了摩擦系数对K0系数的影响；并对Jaky公式在二维颗粒流理论中的适用性进行了探讨。用颗粒流理论能很方便的测得K0值，从而揭示K0系数的变化规律。

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简介：Aseriesofhighsurfaceareagraphiticcarbonmaterials(HSGCs)werepreparedbyball-millingmethod.EffectofthegraphiticdegreeofHSGCsonthecatalyticperformanceofBa-Ru-K/HSGC-x(xistheball-millingtimeinhour)catalystswasstudiedusingammoniasynthesisasaprobereaction.ThegraphiticdegreeandporestructureofHSGC-xsupportscouldbesuccessfullytunedviathevariationofball-millingtime.RunanoparticlesofdifferentBa-Ru-K/HSGC-xcatalystsarehomogeneouslydistributedonthesupportswiththeparticlesizesrangingfrom1.6to2.0nm.ThegraphiticdegreeofthesupportiscloselyrelatedtoitsfacileelectrontransfercapabilityandsoplaysanimportantroleinimprovingtheintrinsiccatalyticperformanceofBa-Ru-K/HSGC-xcatalyst.更多还原

简介：摘 要：柴油加氢K101A压缩机平稳运行如果在运转过程中出现故障，将会导致整个设备使用性能出现问题，甚至对相连接的设备装置产生一定程度影响，如果不能对其进行及时有效的调整， 也会导致发生工作异常，进而导致整个系统发生故障，不仅会给公司造成巨大的经济损失，甚至引发品质事故以及安全事故。

简介：Objective:ToinvestigatetheeffectsofCAL-101,particularlywhencombinedwithbortezomib(BTZ)onmantlecelllymphoma(MCL)cells,andtoexploreitsrelativemechanisms.Methods:MTTassaywasappliedtodetecttheinhibitoryeffectsofdifferentconcentrationsofCAL-101.MCLcellsweredividedintofourgroups:controlgroup,CAL-101group,BTZgroup,andCAL-101/BTZgroup.TheexpressionofPI3K-p110σ,AKT,ERK,p-AKTandp-ERKweredetectedbyWesternblot.TheapoptosisratesofCAL-101group,BTZgroup,andcombinationgroupweredetectedbyflowcytometry.Thelocationchangesofnuclearfactorkappa-B(NF-κB)of4groupswasinvestigatedbyNF-κBKitexploring.Westernblotwasappliedtodetectthelevelsofcaspase-3andthephosphorylationofAKTindifferentgroups.Results:CAL-101dose-andtime-dependentlyinducedreductioninMCLcellviability.CAL-101combinedwithBTZenhancedthereductionincellviabilityandapoptosis.WesternblotanalysisshowedthatCAL-101significantlyblockedthePI3K/AKTandERKsignalingpathwayinMCLcells.ThecombinationtherapycontributedtotheinactivationofNF-κBandAKTinMCLcelllines.However,cleavedcaspase-3wasup-regulatedaftercombinedtreatment.Conclusion:OurstudyshowedthatPI3K/p110σisanoveltherapeutictargetinMCL,andtheunderlyingmechanismcouldbetheblockingofthePI3K/AKTandERKsignalingpathways.ThesefindingsprovidedabasisforclinicalevaluationofCAL-101andarationaleforitsapplicationincombinationtherapy,particularlywithBTZ.

简介：摘要介绍了中石化股份天津分公司炼油部1#裂化K-101/B同步电机自2012年8月份完成了电机国产化后的整体运行情况。针对“4.22”炼油部西区外电网晃电造成系统电压波动，对电机运行的影响；同时，提出目前同步电机励磁系统进一步完善的措施，增加测速法为判据实现同步机“断电失步保护”。

简介：Carbonnanotube(CNT)-supportedRunanoparticleswithmeansizesrangingfrom2.3to9.2nmwerepreparedbydifferentpost-treatmentsandstudiedforFischer-Tropsch(FT)synthesis.TheeffectsofRuparticlesizeoncatalyticbehaviorswereinvestigatedatbothshorterandlongercontacttimes.Atshortercontacttime,wherethesecondaryreactionswereinsignificant,theturnoverfrequency(TOF)forCOconversionwasdependentonthemeansizeofRuparticles;TOFincreasedwiththemeansizeofRuparticlesfrom2.3to6.3nmandthendecreasedslightly.Atthesametime,theselectivitiestoC5+hydrocarbonsincreasedgraduallywiththemeansizeofRuparticlesupto6.3nmandthenkeptalmostunchangedwithafurtherincreaseinRuparticlesize.Atlongercontacttime,C10-C20selectivityincreasedsignificantlyattheexpenseofC21+selectivity,suggestingtheoccurrenceoftheselectivehydrocrackingofC21+toC10-C20hydrocarbons.

简介：对于形如Cn0+Cnk+Cn2k+…+Cnlk（其中k、l∈N。n-k

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.