简介:摘要:本文立足于MT2000短波发射机应用的实际情况,简略阐述了该课题的研究背景,并从常见故障类型、案例分析、故障解决以及技术控制几方面着手,对350W功放板故障展开了深入探究,旨在为相关研究人员提供参考。
简介:摘要:过去很多设备的按键功能都是采用的非自锁按钮或导电橡胶等器件,这些按键很容易出现接触不良的问题,同时机械寿命也比较短。这就促使了非接触感应按键的产生。文中,主要就对基于STC15W402AS单片机感应键实现原理以及方法进行了介绍。
简介:摘要:本文探讨了WITTMANN W918C机械手在注塑机生产过程中的应用。通过对W918C机械手的性能、编程指令及其与注塑机配套生产的实际案例分析,展示了其在提高生产效率、保证产品质量和降低生产成本方面的优势。
简介:AIM:ToinvestigateapathophysiologicalroleofcathepsinW(CatW),aputativethiol-dependentcysteineprotease,whichisspecificallyexpressedincytotoxiclymphocytes,indifferenttypesofchronicinflammationofthegastricmucosa.METHODS:GastricandduodenalbiopsiesofpatientswithHelicobacterpylori(Hpylori)-associatedactivegastritis(Hp,n=19),chemicallyinducedreactivegastritis(CG,n=17),autoimmuneatrophicgastritis(AIG,n=20),lymphocyticcorpusgastritis(LG,n=29),celiacdisease(CD,n=10),andcorrespondingcontrols(n=24)wereanalyzedbyimmunohistochemistryfortheexpressionofCatWandCD45.Furthermore,immunohistochemicaldoublestainingwithanti-CD3andanti-cathepsinwasperformedforthesamplesofAIG.RESULTS:MedianvaluesofCatW-expressingcellsamongCD45-positiveimmunecellswerebetween2%and6%fornormalgastricmucosa,CG,andLG,whereasthecorrespondingvaluewassignificantlyincreasedforAIG(24.7%,P<0.001)andsignificantlydecreasedforHP(0.7%,P<0.05).Doublestainingwithanti-CD3andantiCatWantibodiesrevealedthat>90%ofCatW-expressingcellsingastricmucosaofAIGwereTcells.DuodenalmucosahadsignificantlymoreCatW/CD45-positivecellsthannormalgastricmucosa(median:17.8%vs2%,P<0.01).ThecorrespondingproportionofCatW/CD45-positivecellswasdecreasedinCDcomparedtoduodenalmucosa(median:2.1%vs17.8%,P<0.05).CONCLUSION:TheoppositefindingsregardingthepresenceofCatW-positivecellsinAIG(increase)andCD(decrease)reflectsthedifferentcellularcompositionofimmunecellsinvolvedinthepathogenesisofthesediseases.