简介:Inthispaper,itisprovedthat,given3controlpointsA,BandC,ifthecamera'sopticalcenterOliesononeofthethreeplanesperpendiculartotheplaneABCandgoingthroughoneofthethreealtitudesofthetriangleABC,andadditionallyitsprojectionontheplaneABCiswithinthecircumscribedcircleofthetriangle,thatis,Oiswithintheso-called'dangercylinder',thenthecorrespondingP3Pproblem{O,(ABC)}musthave4positivesolutions.Thisresultispurelygeometrical,andmoreinstructive.Itcanbringsomenewinsightintoabetterunderstandingofmultiple-solutionprobleminthePnPproblem,andcouldbeusedassometheoreticalguidetoarrangecontrolpointsinrealapplications.
简介:目的:探讨p53家族新成员p63及p73在脑胶质瘤中的表达情况,以及在不同病理分级的表达变化。方法:采用免疫组化S-P方法检测66例不同病理分级胶质瘤p63及p73蛋白的表达情况,与置换一抗的空白对照组比较,并同时进行组间对照。结果:p63及p73在66例脑胶质瘤患者中明显表达,p63表达阳性率为42.42%,p73表达阳性率为31.82%。组间对照:p63组Ⅱ~Ⅳ级与I~Ⅱ级比较P<0.Ol:p73组Ⅲ~Ⅳ级与I~Ⅱ级比较P<0.05,Ⅱ—Ⅲ级与I~Ⅱ级比较,x^2=2.268,P>0.05。结论:p63及p73作为p53家族的新成员可能是候选的抑癌基因。
简介:1IntroductionTherareearthcobaltalloyshavethepotentialformakingthemagneticandmagnetoopticalmaterials.Sofar,therareearthcobaltalloyfilmsaresubstantiallyproducedbysputteringorvacuumplating.Ifsuchfilmsarepreparedbyelectrodepositioninstead,productionefficiencywouldbeimprovedandthecompositionofthealloycouldbecontrolled.Becausetheoxidationreductionpotentialsofrareearthelementsareverynegative,organicsolventsmaybeusedaselectrolyticmedia.ElectrodepositionofGdCoandSmCoinorganicsolutionshasbeenreporte...