简介:微观结构和当演员组Mg-4.0Sm-1.0Ca合金的机械性质在由热挤出组成的thermomechanical处理期间被调查,滚动,并且在473K变老。Mg41Sm5阶段包含Ca和像针的Mg2在Mg矩阵形成的Ca阶段,和平均谷物尺寸和延伸是4.2m并且27%,分别地在热挤出以后,它在韧性暗示了增加。在滚动以后,另外,谷物尺寸进一步被精制,并且张力的力量增加了到293MPa。一新猛抛Mg3Sm在山峰Mg-4.0Sm-1.0Ca合金被发现,这合金显示了最好的机械性质,与83HV的山峰坚硬和313MPa的最终的张力的力量;这些性质被归因于谷物精炼加强,加强的稳固的答案,变硬的工作,并且降水加强。
简介:摘要目的探讨肿瘤标志物CA15-3在肝脏疾病中的变化。方法对722例肝脏疾病患者进行CA15-3测定,观察肝癌、肝硬化、肝炎、肝囊肿、肝脓肿各组CA15-3增高比率、增高值进行比较,推算CA15-3用于肝癌诊断的敏感性、特异性、阴阳性预测值、诊断效率。结果CA15-3在肝病中增高比率依次为肝癌16.7%,肝硬化10.1%,肝炎4.7%,三种疾病CA15-3测定值均高于正常对照组,诊断肝癌的敏感性为16.7%,特异性为93.6%,阴性预测值为55.2%,阳性预测值为70.6%,诊断效率56.9%。结论CA15-3测定结果增高并不只限于乳腺癌患者,肝病患者尤其肝癌也有增高,CA15-3亦可作为肝癌诊断的肿瘤标志物。
简介:Objective:MicroRNA-21(miR-21)hasbeenshowntobeakeyregulatorofcarcinogenesis.TherewerefewreportsaboutthecomparisonofserummiR-21withconventionaltumormarkers.ThisstudyaimedtoexplorethediagnosticvalueofcirculatingmiR-21asatumormarkerinbreastcancer(BC)andcompareitwithCA153andcarcinoembryonicantigen(CEA).Methods:CirculatingmiR-16andmiR-21wereamplifiedandquantitativelydetectedbyreal-timePCRin89BCpatientsand55healthycontrols.ThelevelsofCA153andCEAweremeasuredthroughelectrochemiluminescenceassays.ThenthesensitivityindiagnosisofBCwascomparedamongmiR-21,CA153andCEA.Results:ThelevelofserummiR-21wassignificantlyhigherinBCpatientsthancontrols(P<0.001).ThesensitivityandspecificityofmiR-21were87.6%and87.3%,respectively,whereasthesensitivitiesofCEAandCA153wereonly22.47%and15.73%.Conclusions:ComparedwithCEAandCA153,serummiR-21hasahighersensitivityindiagnosisofBC.AlthoughnotcorrelatedwiththestatusofER,PRandclinicalstages,serummiR-21maybeapotentialdiagnosticindicatorforBC,especiallyfortheearlystage.
简介:【摘要】 目的 分析强化疼痛护理管理在肺 ca患者手术后的应用。方法 选取我院 2018年 4月 -2019年 3月间收治的肺 ca患者 80例作为本次观察对象,按照不同的护理管理措施对其进行分组,一组为采取常规护理管理措施的常规组( n=40),一组为采取强化疼痛护理管理措施的强化组( n=40),对两组患者的术后疼痛评分以及焦虑( SAS)、抑郁( SDS)评分进行对比分析。结果 强化组患者术后 12小时、 24小时以及 48小时的疼痛评分以及焦虑、抑郁评分均低于常规组( p<0.05),差异显著。结论 在肺 ca患者术后采取强化疼痛护理管理措施,效果显著,可有效降低患者的焦虑、抑郁等负性情绪以及疼痛情况,值得临床借鉴并推广。
简介:ObjectivesTheeffectsofcarvediloloncalciumcurrent(ICa)wereinvestigatedinisolatedadultratventricularmyocytes.MethodsICawasrecordedbyusingwhole-cellpatch-clamprecordingtechnique.ResultsCarvedilolreversiblyinhibitedICainaconcentration-dependentmanner,carvedilolat0.1,0.3,1and10μmol/LintheextracellularsolutiondecreasedpeakICaby1.52%,18.04%,37.34%and72.18%,respectively.Thesteady-stateinactivationcurveofICawasshiftedtomorenegativepotentials,whiletheactivationcurvewasnotaltered.Therecoveryfrominactivationwasshiftedtorightdirection,itcouldnotberecoveredcompletely.Inaddition,Pretreatmentofventricularmyocyteswithprazosinandpropranololcouldn'tblockthecarvedilol-inducedreductionofICa.ConclusionsCarvedilolinhibitsICainadultratventricularmyocytesbymechanismsinvolvingpreferentialinteractionwiththeinactivatedstateofcalciumchannel.
简介:Micro-poredCA6-MAlightweightmaterialwithCA6:MAmassratioof7:3waspreparedusingAl(OH)3.MgCO3andCaCO3asstartingmaterials,andanthracite.sweetpotatostarchandanthracite+sweetpotatostarchasporeformingagent(PFA)withanadditionof10mass%.20mass%and30mass%.respectively.Thestartingmaterialsweredrymixed.wetco-milledinaballmillfor1h.slipcastintocylindricalspecimenswithadiameterof60mm.andthencalcinedat1450℃for3h.WiththeincreaseofPFAaddition.apparentporosityincreases,andbulkdensitydecreases.TheinfluenceofdifferentPFAsonpropertiesofthemicro-poredLWCA6-MAaggregatewasinvestigated.TheachievedCA6-MA.byadding30%sweetpotatostarch.hasaporosityof76.8%.bulkdensityof0.78g·cm-3andmedianporesizeof1.90μm.
简介:3月29日,CA中国宣布与哈工大首创科技股份有限公司建立战略合作伙伴关系,双方将在市场、技术及产品等多方面展开全方位的合作。根据合作协议,哈工大首创将按照CA的市场销售与渠道政策进行销售,销售的产品涵盖了CA当前全部的产品线。哈工大首创控腔的北京哈工大八亿时空科技发展有限公司将作为此次合作的销售平台全面运营CA的销售业务。