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简介：Consideringthatinamagneticresonancesystem,ifthedetectioncoilcontributesdominantlytothesystemnoise,theperformanceofthewholesystemcancertainlybeimprovedbyswitchingtoadetectioncoilmadeofahigh-temperaturesuperconductor,andusingYBa2Cu3O7thinfilmson25×25mm^2LaAlO3substrates,wehavepreparedtwokindsofdetectioncoils:single-coilandtwo-coil.encouragingly,theirqualityfactorsaremeasuredtobeQ>2500fortwo-coil(at22.566MHzand77K)andQ>5500forsingle-coil(at92.3MHzand77K),respectively,Here,wedescribethedetailsofthedesign,fabricationandtestingofthecoils.

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简介：由于Tc7．3V的高电离电位，采用传统的正离子质谱测量方式极为困难。世界上，仅LosAlamos实验室开展过Tc的负离子质谱分析技术研究。本年度采用新型发射剂，建立了Tc的负离子质谱分析技术。并利用该技术结合同位素稀释质谱法标定了人工生产的^97Tc稀释剂。

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简介：Aswellknown,iftheHiggsbosonwerenotobservedatLHC,thetechnicolormodelwouldbethemostfavorablecandidateresponsibleforthesymmetrybreaking.Toovercomesomedefectsinthepreviousmodel,someextendedversionshavebeenproposed.IntheTC2modeltypicalsignatureisexistenceofheavyH_(TC)andtechnipionП.Adirectproofofvalidityofthemodelistoproducethemataccelerator.Thuswestudytheproductionratesofe~+e~-→H_(TC)П~0ande~+e~-→П~+П~-atILCinthetopcolor-assistedtechnicolor(TC2)model.Infact,thereisafloodofmodelsbelongingtonewphysics,whichcanresultinproductswithcharacteristicssimilartoH_(TC)+ПoftheTC2model.ThereforetodistinguishthismodelfromothersonemayneedtoinvestigatesomedetailsbycalculatingthecrosssectiontoNLO.WeindeedfindthattheNLOcorrectionsaresignificant,namelytheratioδ2≡(σ_(NLO)-σ_(LO))/σ_(LO)ine~+e~-→H_(TC)П~0exceeds100%withinaplausibleparameterspace.

简介：Inaself-consistentmean-fieldtreatmentofthetwo-dimensionalt-t'-Jmodel,wetheoreticallyexaminethecouplingofin-planequasi-particlestotheantiferromagneticspinfluctuationsinhigh-Tcsuperconductors,whichrenormalizesthefermionicself-energy.Wereproducethecharacteristicpeak-dip-humpstructureobservednotonlyinangly-resolvedphotoemissionspectroscopy,butalsoinsuperconductor-insulator-normalmetalunctionsandscanningtunnellingmicroscopyexperiments.Weconsidertheevolutionofthisstructurewithdoping.Itisshownthatthiskindofcouplingcanaccountformanyanomalouspropertiesofhigh-Tcsuperconductorsinsuperconductingstates.

简介：ThispapershowsthattheJosephsoncouplingenergyandthezero-pointenergyhaveindeliblerulesonthesuperfluiddensityandthesuperconductivityinthehigh-Tccuprates.ThispaperalsoshowsthatthevaluesofTcatunderdopedandoverdopedregionsaredeterminedbythedamageconditionsofthephasecoherenceintheclassicalandthequantumXY-models,respectively.

简介：TheauthorsintroduceandinvestigatetheT_C-Gorensteinprojective,L_CGorensteininjectiveandH_C-GorensteinflatmoduleswithrespecttoasemidualizingmoduleCwhichsharesthecommonpropertieswiththeGorensteinprojective,injectiveandflatmodules,respectively.TheauthorsprovethattheclassesofalltheT_C-GorensteinprojectiveortheH_C-GorensteinflatmodulesaxeexactlythoseGorensteinprojectiveorfiatmoduleswhichareintheAuslanderclasswithrespecttoC,respectively,andtheclassesofalltheL_C-GorensteininjectivemodulesaxeexactlythoseGorensteininjectivemoduleswhichareintheBassclass,sotheauthorsgettherelationsbetweentheGorensteinprojective,injectiveorflatmodulesandtheC-Gorensteinprojective,injectiveorflatmodules.Moreover,theauthorsconsidertheT_C(R)-projectiveandL_C(R)-injectivedimensionsandT_C(R)-precoversandL_C(R)-preenvelopes.Finally,theauthorsstudytheH_C-GorensteinflatmodulesandextendtheFoxbyequivalences.

简介：在文[1]中，给出了迹为0和2的n阶n-可扩张的TCS-矩阵的一个刻划。本文将给出迹为4的这类矩阵的一个刻划。

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简介：最高的帮助颜色的彩色印片法模型(TC2)预言一个非通用的Z'计量器波色子，它与提高的力量联合到第三产生费米子。我们在LHC通过过程ggt在生气的节和最高的夸克对生产的旋转关联上学习这个非通用的计量器波色子的效果。我们发现全部的生气的节和旋转关联能被减少由?4.7%并且?1.4%分别地在允许的参数空格。

简介：Usingbi-spinorfieldswewritethepseudo-scalarandbi-spinorfieldsthatarecharacterizedbythefieldfunctionsofcoordinatesofseveralparticles,namelymulti-particlefields.Byapplyingthequantizationproceduretothesemulti-particlefields,hadroniccreationandannihilationoperatorshavebeenobtained.

简介：Thebeamof35MeV/u~(40)ArwasdeliveredbyHIRFL(HeavyIonResearchFacilityatLanzhou).Atargetof674μg/cm~(2197)Auwasusedintheexperiment.Theexperimentwasmadeattheterminaloflargecylindeicalscatteringchamber,inwhichsixtelescopesareusedtomeasurechargedparticlesemittedintherearandmiddle

简介：TheauthorshowsthatK2Z[1+（-35的平根号）/2]?A≈Z/2Z.ThemethodofproofisageneralizationoftheTate'smethod.

简介：Finiteelementmethod(FEM)hasbeenusedtoanalyzethestressandstrainfieldsandthestresstri-axiallevelsaroundthetipofthecrackundermode-Ⅱloading.Theresultsshowthat:undermode-Ⅱloading,thedirectionofthemaximumtensilestressandthatofthemaximumtri-axiallevels(R_)existatanangleof-75.3°fromtheoriginalcrackplane:themaximumshearstressandR_=0existalongtheoriginalcrackplane.Mode-ⅡloadingexperimentusingBHW-35steelatdifferenttemperaturesshowthattherearetwokindsoffracturemode.openingmode(ortensilemode)andslidingmode(orshearmode).Ade-creaseintemperaturecausesthefracturemodetochangefromshearmodetotensilemode.ForBHW-35steel,thiscriticaltemperatureisabout-90C.Actually.underanykindofloadingmode(modeⅠ,modeⅡ,modeⅢormixedmode),therealwaysexistseveralkindsofpotenitalfracturemodes(forexample,openingmode.slidingmode.tearingmodeormixedmode).Theeffectoftemperatureundermode-Ⅱloadingisactuallyrelatedtothechangeoftheelastic-plasticpropertiesofthematerial.

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简介：采用电感耦合等离子体原子发射光谱法测定钛合金TC4中Fe、Al、V含量。使用硝酸与氢氟酸溶解试样，大幅缩短了溶样时间；确定了Fe、Al、V分析线分别为238.204、309.271、292.402nm。精密度实验表明，待测组分的相对标准偏差(RSD，n=10)均低于1.3%，能满足钛合金TC4中Fe、Al、V含量的检测要求。

简介：摘要现阶段，各行各业的发展都离不开电力产业的支撑，因此电网结构也在不断向复杂化和多元化发展，同时，检修频率也随之增加，相应地提高了维护成本，但是在实际中，过于频繁地停电进行检修不利于电力设备本身，甚至缩减使用寿命，给经济利益带来一定的损失。随着电力技术的提升，定期对电力设备进行检修正在成为主流，用专业术语来说则是状态检修。本文针对状态检修以及35kv变电站二次检修和维护，做了重点分析，仅供同行参考。

简介：采用环境氢脆技术及现代材料微观分析技术，研究了Fe-35Ni-15Cr实验合金在室温至900℃的力学性能及热充氢后在室温及750℃的力学性能，分析了温度对材料微观组织的影响，为优化其化学成分、热处理工艺等提供技术依据。