简介:根据生产需求设计了一种新型的阳极板夹持移动装置。该装置通过电液比例液压控制系统,精确控制移动小车和夹持装置的位置,有效克服阳极板加工中出现的跑偏现象,提高操作自动化程度与精确度,利于阳极板的后续加工。为了提高电液比例系统的位置控制精度,设计了数字增量式PID与死区非线性补偿相结合的自适应位置控制器。数字增量式PID控制器根据目标位置与实际位置之差,调整比例阀阀口大小,使得液压缸准确地跟踪目标的运动轨迹。死区补偿算法可以消除比例阀存在的死区非线性,提高响应速度。最后通过电液比例系统位置控制试验验证所提出的位置控制器。
简介:TheeffectsofUVAphotoirradiatedCe(Ⅳ)dopedTiO2nanoparticle(CDTP)onratcoloncarcinomacellline(C26)growth,cellcycledistribution,andmorphologywerestudiedbyMTTassay,FlowCytometry,andfluorescentstaining.Theresultsindicatethatabout64.6%cellsarekilledafter24hby180μg·ml-1CDTPwhen8minexposedtoUVA,over90%deadfor30mingroup,relativeto18.7%,41.5%ofTiO2atthesameconditionrespectively.Hoe33258stainingofthefixedcellsrevealstypicalapoptoticstructures(apoptoticbodies),andcellsarearrestedinG0/G1phase.
简介:ThereactionofNdCl3withlithiummethylnaphthalenein1:2moleratioinTHFgeneratesblackpowder.Thepowderreactswithcyclooctatetraene(COT)inTHFtoformthetitlecomplex.[Li(THF)4Nd(C8H8)2]·2THFcrystallizesinthemonoclinicspacegroupP2/cwithunit-celldimensionsa=1.7858(7)nm,h=1.3243(4)nm,c=1.8086(6)nm.β=106.52(4)°,V=4.10nm3andDc=1.268g/cm3forZ=4.F(000)=1660,R=0.0774,Rn=0.0733.Thecomplexconsistsofdiscreteion-pairandtwoTHFmoleculesadduct.Intheanion,theneodymiumatomiscoordinatedbytwoCOTrings.ThestructureofthecationshowsthatthelithiumatomisattachedwithTHFmoleculesonly.