简介:随着现代医学对止血和血栓形成机制认识的不断深入。临床实验室开展有关的检测项目逐渐增多,对凝血仪的要求也越来越高。ACL—TOP全自动凝血分析仪是InstrumentLaboratory公司一款较为成熟的凝血分析仪,其集凝固(浊度)法、发色(吸光度)法和免疫法检测于一身,精密度、线性度及准确度均较稳定,是代表当前全自动凝血检测技术的主流产品。
简介:<正>Background:Significanteffortshavebeenmadetoidentifymodifiableriskfactorsofnon-contactanteriorcruciateligament(ACL)injuriesinmaleandfemaleathletes.However,currentliteratureontheriskfactorsforACLinjuryarepurelydescriptive.Anunderstandingofbiomechanicalrelationshipbetweenriskandriskfactorsofthenon-contactACLinjuryisnecessarytodevelopeffectivepreventionprograms.Purpose:Tocomparelowerextremitykinematicsandkineticsbetweentrialswithandwithoutnon-contactACLinjuriesandtodetermineifanydifferenceexistsbetweenmaleandfemaletrialswithnon-contactACLinjuriesregardingthelowerextremitymotionpatterns.Methods:Inthiscomputersimulationstudy,astochasticbiomechanicalmodelwasusedtoestimatetheACLloadingatthetimeofpeakposteriorgroundreactionforce(GRF)duringlandingofthestop-jumptask.MonteCarlosimulationswereperformedtosimulatetheACLinjurieswithrepeatedrandomsamplesofindependentvariables.Thedistributionsofindependentvariablesweredeterminedfrominvivolaboratorydataof40maleand40femalerecreationalathletes.Results:Inthesimulatedinjuredtrials,bothmaleandfemaleathleteshadsignificantlysmallerkneeflexionangles,greaternormalizedpeakposteriorandverticalGRF.greaterkneevalgusmoment,greaterpatellatendonforce,greaterquadricepsforce,greaterkneeextensionmoment.andgreaterproximaltibiaanteriorshearforceincomparisontothesimulateduninjuredtrials.Nosignificantdifferencewasfoundbetweengendersinanyoftheselectedbiomechanicalvariablesinthetrialswithsimulatednon-contactACLinjuries.Conclusion:Smallkneeflexionangle,largeposteriorGRF.andlargekneevalgusmomentareriskfactorsofnon-contactACLinjurydeterminedbyastochasticbiomechanicalmodelwithacause-and-effectrelationship.
简介:摘要本文介绍了标准ACL的概念,分析了它的工作原理和应用方法;给出了组建一个简易校园网的拓扑结构,并针对此设计,给出了标准ACL在具体的网络访问控制中的实施和配置。