简介：cytosine的tautomers和相关含水的tautomers上的AbinitioMP2和DFT研究被执行了。cytosine和相关转变状态的四tautomers的地面状态结构充分被优化。震动的频率分析在所有优化结构上被执行。详细内在的反应坐标(IRC)计算被执行保证被连接到相关tautomers的优化转变状态结构。我们为cytosine的tautomers和相关含水的tautomers获得了相对稳定性顺序。在里面孤立并且含水的条件，C(2)O(7)的契约类型和C(4)N(8)极大地影响cytosinetautomers的稳定性。而且，我们在在keto和cytosinetautomers的enol形式之间的intramolecular质子转移上探索了水分子的影响。第一个水分子显然减少为monohydratedcytosinetautomers的异构化激活精力。第二和第三个水分子什么时候在反应环被增加，被显示出异构化精力障碍仅仅有点变化。溶剂效果在孤立的cytosine的质子转移障碍上有明显的影响。然而，溶剂效果似乎为monohydrated，dihydrated和trihydratedcytosine的异构化精力障碍不足道。在这些建筑群的水分子能被看作明确的水。因此，明确的水模型可能是更可信的探索intramolecular质子转移，与是含蓄的水模型的PCM比较。

简介：Magneticparticlescanbeuniformlyfluidizedbycouplingthegasflowwithanexternallyimposedmagneticfield.Interparticleforcesgeneratedbythemagneticfieldcauseaggregationoftheparticlesinchain-likestructurespreferentiallyorientedalongthemagneticfieldlines.Inthepresentpaper,westudytheimplicationsoftheformationofthesespecialtypesofaggregatesontheempiricalRichardson–Zaki(RZ)equation,originallyproposedtodescribetheexpansionoffluidizedbedsofnon-aggregatedparticles.Wehaveaddressedtwoimportantissues,namelytheflowregime,whichisafunctionofthesizeoftheaggregates,andtheeffectofshapeandorientationofthechain-likeaggregateswithrespecttogasflowonfluiddrag.WeproposeamodifiedRZequation(MRZE)inwhichthevelocityscale,givenbytheterminalsettlingvelocityoftheindividualaggregates,andtheRZexponentarepredeterminedasafunctionofthechainlength.Thechainlengthdependsontheratioofthemagneticenergytogravitationalenergy,andisestimatedfromthemagneticfieldintensity,andparticlemagnetization,sizeanddensity.PredictionsoftheMRZEaresuccessfullycomparedwithpublishedresultsintheliteratureontheexpansionofmagneticparticlesinthepresenceofexternallyappliedmagneticfields.

简介：在航空测量，主要因素是地面波动。然而，大多数为航空测量设计使用的外部航空测量软件不考虑地面波动影响。因此，设计结果有比较randomicity和“差距”被期望。一个航空测量设计系统被与DEM数据分析地面波动影响到设计结果开发以便前面的重叠和方面重叠能根据块地面波动被认为正当遇见说明或标准。这个系统设计的数据与真实的飞数据相比。结果证明使用DEM在航空测量设计帮助能保证设计结果更好适合真实地面。

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简介：CeO2andCuOx-CeO2supportedpotassiumcatalystsweresynthesizedbywetnessimpregnationmethod.ThecatalystswerecharacterizedbyBET,NO-TPO,NOx-TPDandsoot-TPOmeasurements.Bythedecorationofpotassiumandcopper,themaximumsootcombustiontemperatureoftheceria-basedcatalystdecreasedto338and379°CinthepresenceandabsenceofNOunderaloosecontactmode,re-spectively.ThepronouncedlyenhancedNOoxidationabilitybycopperintroductionandNOxstoragecapacitybypotassiummodif...

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简介：认识到极化坡度冷却的一个新奇、简单的方法(PGC)被报导。稳定，变并且外部洞二极管激光的频率的快速的调节被使用Zeeman-effect-assisted认识到Doppler免费的浸透的吸收技术。基于这种方便技术，87Rb寒冷原子在磁电机光的陷井(警句)从房间温度背景蒸汽被捕获。同时，不变的数字，密度和在MOT的原子的一生被测量。随后，一个frequency-fast-varying电路被设计认识到PGC，它在实验有效地并且可靠地被表明。冷原子云的温度被二个不同方法测量，它与对方一起与一致。

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简介：BackgroundProstheticmitralvalvereplacementisacommonsurgicaltreatmentofmitralvalvedisease.Completevideo-assistedmitralvalvereplacementrepresentsthecontemporaryminimallyinvasivecardiacsurgeryinvalvediseasesurgicaltherapy.Inthefieldofminimallyinvasivecardiacsurgery,thesuccessoftheoperationislargelydependingonsurgicalincision,italsoreflectsthesurgeon'stechniquelevel.MethodFromFebruary2010toFebruary2013,80casesofcardiacpatientswithmitralvalvepathologicalchangesinourdepartmentwhohadreceivedsurgicaltreatmentofcompletevideo-assistedmitralvalvereplacementwererecruited,theyweredividedintotwogroupsaccordingtothesurgicalincision:midclaviculargroup(Mgroup,n=50)andparasternalgroup(Pgroup,n=30).Theclinicaldatawererecordedincluding:cardiopulmonarybypasstime,aorticclampingtime,volumeofthoracicdrainageafteroperation,ICUtrachealintubationtime,postoperativedaysofhospitalstayandtimeforobservingthepostoperativecomplications.Thecomparisonbetweentwogroupswasperformedusingt-testanalysis.ResultBothMGroupandPGrouphadfavorablesurgicalview,therewerenoemergencysituationofredomediansternotomyduringinitialoperativeperiodorintraoperativedeath,nopericardialtamponade,noinfection,andnootherseriouspostoperativecomplications.Whereas,therewere2casesofredooperationforstanchbleedinginMGroupand1caseofperivalvularleakageinPGroup.Nevertheless,3monthslater,theresultofreexamineshowedthattheperivalvularleakagehadvanished.Theclinicaldatawasshownasfollow(MGroupvs.PGroup):cardiopulmonarybypasstime(90.2±28.7vs.87.3±24.5min,P>0.05),aorticclampingtime(65.2±17.4vs.68.6±21.9min,P>0.05),1stdayvolumeofthoracicdrainageafteroperation1(75.8±35.6vs.53.2±25.6mL,P>0.05),ICUtrachealintubationtime(9.6±3.4vs.8.4±4.5hours,P>0.05),postoperativedaysofhospitalstay(7.3±2.2v

简介：Poly(N-vinyl-2-pyrrolidone)(PVP)-stabilizedrutheniumnanorodswithhighaspectratiobyrefluxingruthenium(Ⅲ)chlorideinn-propanolhavebeensuccessfullypreparedbymeansofafacileandrapidmicrowaveheatingforthefirsttime.Thestructureandmorphologyoftheobtainedproductswerecharacterizedbytransmissionelectronmicroscopy(TEM),selectareaelectrondiffraction(SAED),ultraviolet-visiblespectrophotometry(UV-vis),X-rayphotoelectronspectroscopy(XPS)andFouriertransformspectroscopy(FT-IR).XPSanalysisrevealsthatthenanorodswereinthemetallicstate.TEMimagesshowedthatrutheniumnanorodshadanobviousone-dimensionalstructurewiththeaspectratiorangedfrom5to40nmandlengthupto600nm.SAEDpatternsindicatedthatthenanorodsweresingle-crystallinewithahexagonalstructure.

简介：WereportanenhancementcavityforfemtosecondTi:sapphirelaserattherepetitionrateof170MHz.Anenhancementfactorof24isobtainedwhentheinjectingpulseshaveanaveragepowerof1Wandapulsedurationof80fs.ByplacingaBBOcrystalatthefocusofthecavity,weobtaina392-mWintracavitydoubled-frequencylaser,correspondingtoaconversionefficiencyof43%.Theoutputpowerhasalong-termstabilitywitharootmeansquare(RMS)of0.036%.

简介：这份报纸发源维的分析的讨论并且在有磁力地帮助的使流体化的床上可伸缩。进程变量的基本检查，合并机械、磁性的单位，允许变量的混合集合的变换直到作为贡献帮助使液化行为的领域的效果代表表面力量的统一术语。自从新变量都是由三个基本领域产生的典型压力，这转变被称为压力变换：严肃，磁性并且液体流动。这条途径以无尺寸的组而非对古典维的分析恰当的正式代数学的操作探讨物理基础。基本的无尺寸的组称为小粒的磁性的邦德数字作为严肃并且磁场的典型压力的比率被介绍。这分析也提供描绘磁场的一套命名无尺寸的数字帮助使液化象Filippov数字，Rosensweig数字，Kwauk数字和Siegell数字那样，作为典型压力的比率发源。

简介：CuSmicrocrystalsweresuccessfullypreparedthroughamildsolvothermalreactioninethyleneglycol(EG)withtheassistanceofcationicsurfactantcetyltrimethylammoniumbromide(CTAB).Aninterestingmorphologyevolutionfromflower-likemicrospherestohollowmicrospheres,andfinallytosmoothnanoflakeswasobservedwhenincreasingtheamountofCTAB.TheproductswerecharacterizedbyX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),transmissionelectronmicroscopy(TEM),andUV—visspectroscopy.ItwasfoundthattheamountofCTABplayedanimportantroleindeterminingthemorphologyoftheCuSmicrocrystals.Electricalmeasurementrevealsthattheas-preparedCuSmicrosphereswereofhighconductivity,whichmightfavortheirdeviceapplications.ItisexpectedthatCuSmicrocrystalswithcontrolledmorphologiesandstructureswillhaveimportantapplicationsinsolarcells.Thissimplebuteffectivemethodcouldalsobeextendedtothecontrolledgrowthofotherinorganicmicrocrystals.

简介：Throughrecurrentbackcrossingincombinationwithmolecularmarker-assistedselection(MAS),restorerlinesR8006andRl176carryingXa-21,agenehavingbroad-spectrumresistancetoricebacterialleafblight,wereselected.BycrossingthetwolinestoCMSlineZhong9A,twonewhybridricecombinations,Zhongyou6andZhongyou1176weredeveloped.Thehybridsshowedhighresistancetodiseases,goodgrainqualityandhighyieldingpotentialinnationalandprovincialadaptabilityandyieldtrials.

简介：Possibilitiesforenhancementofcatalyticreactionratebycombiningphasetransfercatalysisandhydrogenbondingofthecatalystwiththesubstrateandreagentwerestudied.Aphasetransfercatalystlibrarywithsixtypolystyrene-supportedquaternaryammoniumsaltcatalystswassynthesized.ThereductionofacetophenonebyNaBH4wasusedastheprobingreactiontoselectouttheostactivecatalystinthelibrarybyusingiterativemethod.whichwasthegel-typetriethanolamineaminsatingstronglyasicanionexchangeresinwiththecrosslinkingdegereeof2%Ahydrogenbondingassistedcatalyticmechanismwasproposedtoexplainthehighcatalyticactivityofthecatalyst.

简介：Thecarboxylterminalofsodiumoleatehasastrongerpolaritythanthatofoleicacid;thisterminalismorelikelytobedipolepolarizedandionicallyconductiveinamicrowavefield.Sodiumoleatewasusedasthemodelcompoundtostudythedecarboxylationofoleicacidleadingtohydrocarbonformationviamicrowave-assistedpyrolysistechnology.Thepyrolysisgas,liquid,andsolidproductswerepreciselyanalyzedtodeducethemechanismfordecarboxylationofsodiumoleate.Microwaveenergywasabletoselectivelyheatthecarboxylterminalofsodiumoleate.Duringdecarboxylation,thedoublebondinthelonghydrocarbonchainformedap-πconjugatedsystemwiththecarbanionintermediate.Theresultingp-πconjugatedsystemwasmorestableandbeneficialtothepyrolysisreaction(decarboxylation,terminalallylation,isomerization,andaromatization).Thephysicalpropertiesofpyrolysisliquidweregenerallysimilartothoseofdieselfuel,therebydemonstratingthepossibleuseofmicrowavesforcontrollingthedecarboxylationofsodiumoleateinordertomanufacturerenewablehydrocarbonfuels.

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简介：一个新奇帮助多晶硅的控制硅的整流器(SCR)被介绍；在这篇论文分析了，它在HHNEC的0.18μm电可擦可编程只读存储器过程被制作。帮助多晶硅的SCR利用多晶硅层没有占据额外的布局区域，由通行证帮助静电的分泌物(ESD)电流。TLP当前电压(I-V)测量结果显示出给一样的布局区域那，帮助多晶硅的SCR的坚韧性性能能被改进到3次常规MLSCR的。而且，一个手指如此的帮助多晶硅的SCR，占据仅仅947μm，2]布局区域，能经历7-kVHBMESD应力。结果进一步证明帮助多晶硅的SCR的S类型I-V特征对由改变设备尺寸的不同操作条件可调节。与传统的SCR相比，这新SCR能绕过更多的ESD水流；消费更小的IC区域。

简介：Thispaperdescribestheeffectsofnon-equilibriumairplasmageneratedbyadielectricbarrierdischarge（DBD）onthecombustionoflowheatingvaluefuels.TheexperimentalresultsindicatethatadditionofaverysmallamountofenergytotheairflowintheformofDBDsignificantlyimprovestheflamestability.Moreover,maincombustioncharacteristicssuchasflamepropagationspeed,combustionintensityandleanblow-offlimitsarealsoenhancedbytheeffectofplasma.SomeactiveradicalssuchasexcitedOatomandexcitedN2moleculeareobservedbyspectrographinthedischargearea.BasedontheresultsofnumericalinvestigationwecanconcludethattheseactiveradicalsgeneratedindischargeareacanacceleratetheproductionrateofactiveOHradicalwhichplaysakeyroleintheoxidationprocessoflowheatingvaluefuel,andthusthewholecombustionprocessisaccelerated.

简介：AbstractWith the development of human assisted reproductive technology (ART), an objective, accurate, and non-invasive method to assess the quality and viability of oocytes and embryos remains one of the most significant goals. Granulosa cells (GCs) play an essential role in oocyte development. GCs can differentiate into mural GCs (MGCs) and cumulus cells (CCs) under the influence of oocytes. MGCs promote the growth and development of follicles by secreting cytokines and steroid hormones. Simultaneously, CCs can form cumulus-oocyte complexes to communicate with oocytes through gap junctions and promote oocyte growth and maturation. Seeking suitable biomarkers in GCs provides a direction for the non-invasive assessment of oocyte and embryo abilities during ART procedures. To date, only a few studies have investigated potentially effective GC biomarkers during ART processes, such as the apoptosis of GCs, transcriptomic characteristics of GCs, quality and quantity of mitochondria in GCs, and telomere length of such cells. These are potential reference indices for screening high-quality oocytes and embryos. Independent studies on MGCs and CCs can provide more effective results. Although there is scope for optimization and improvement, the results have become increasingly accurate with the constant advances in technology. Due to the heterogeneity of the study population and technical limitations, clinical tests for GCs cannot be performed as part of routine tests, but their prospects are promising. This article reviews the biomarkers that have been studied in MGCs and CCs.