正交设计-重复试验法优选当归芍药散的提取工艺

...a.芍药苷表2　正交试验L9(34)计算表NO.提取率/‰结果/%yikYi13.9343.3757.30924.5074.6099.11634.5764.1338.70944.4524.3778.82953.6503.9777.62763.9003.7117.61174.1884.1618.34982.4162.5935.00994.7674.6729.439表3　方差分析表方差来源离差平方和自由度均方和F显著性...

固相萃取与高效液相色谱联用测定宠物食品中三聚氰胺

...方差因子RWP，以及拟合优值S的数值作判据，其中RP=｜Yi(obs)－Ｙi(calc)｜Yi(obs)(5)　　RWP=Wi[Yi(obs)－Ｙi(calc)]2Wi[Yi(obs)]2１／２(6)　　S=Wi[Yi(obs)－Ｙi(calc)]2/(N－Ｐ)(7)　　式中Yi(obs)为在２θi位置观察的衍射强度；Yi(calc)为在2...

模糊控制理论在PSA金免疫层析系统基值自动调零中的应用

...结果进行相关性计算。相关系数γ计算公式：γ=（Xi-X)(Yi-Y)(Xi-X)2(Yi-Y)2(1-1)为计算方便，上式可转化为γ=XiYi-NXY(Xi2-NX2)(Yi2-NY2)(1-2)　　公式（1-2）中，N为样本数；Xi为金免疫层析试条PSA测定仪测定的结果，Yi为BeckmanAccess...

《自然》：皮肤保护性诞生的深层机制得以揭示

...医学研究所的项目负责人。论文第一作者、Fuchs小组的RuiYi表示，皮肤能够表达数百种微小的RNA分子——miRNA，但其中有一个令他十分好奇，那就是microRNA-203。Yi和Fuchs发现，随着胚胎发育，microRNA-203的表达数量在两天之内会发生...

HPLC法测定白花前胡中白花前胡丙素和紫花前胡中紫花前胡苷的含量?

...engthwas323nm,334nmforPd-IaandforNDK.Thecalibrationcurvesshowedgoodlinearityintherangeof0.08～0．8　μgand0.01～0.1μg,r=0.9999and0.9999respectively.Theaveragerecoverieswere98.53%～99.27%and97.60%～99.87%,RSDwaslessthan2%respectively.Conclusion:Themethodissimple,sensitive,rapidandaccurate,andc...

HPLC法测定白花前胡中白花前胡丙素和紫花前胡中紫花前胡苷的含量?

...engthwas323nm,334nmforPd-IaandforNDK.Thecalibrationcurvesshowedgoodlinearityintherangeof0.08～0．8　μgand0.01～0.1μg,r=0.9999and0.9999respectively.Theaveragerecoverieswere98.53%～99.27%and97.60%～99.87%,RSDwaslessthan2%respectively.Conclusion:Themethodissimple,sensitive,rapidandaccurate,andc...

RhokinaseregulatesrenalbloodflowbymodulatingeNOSactivityinischemia-reperfusionoftheratkidney

...ioncharacterizedbyareducedendothelium-dependentvasodilatationandsubsequentlyimpairedbloodflow.Inthisstudy,weinvestigatedtheroleofRhokinaseinendothelialnitricoxidesynthase(eNOS)-mediatedregulationofrenalbloodflowandvasomotortoneinrenalI/R.MaleWistarratsweresubjectedto60-minbilateralclampingoftherenal...

糖类的毛细管电泳及芯片毛细管电泳

...学物理研究所，辽宁大连116023）　参考文献：［1］WANGKe-yi.ProgressinChemistry,1996,8(2):98-108王克夷.化学进展,1996,8(2):98-108［3］ReinholdVN,SheeleyDM,KueiJ,etal.AnalChem,1988,60:2?719-2?722［4］ZHANGLi-na,ZHANGPing-yi,LIXiang,etal.ChemicalJournalofChineseUniversities,...

研究公布姬蝴蝶兰基因组序列

...ai,XinLiu,KevinVanneste,SebastianProost,Wen-ChiehTsai,Ke-WeiLiu,Li-JunChen,YingHe,QingXu,ChaoBian,ZhijunZheng,FengmingSun,WeiqingLiu,Yu-YunHsiao,Zhao-JunPan,Chia-ChiHsu,Ya-PingYang,Yi-ChinHsu,Yu-ChenChuang,AnneDievart,Jean-FrancoisDufayard,XunXu,Jun-YiWang,JunWang,Xin-JuXiao,Xue-MinZhao,RongDu,Guo-Q...

毛细管区带电泳测定芦荟中的有效成分

...herbAloeveraL.var.chinensis(Haw.)Bergeraswellasitsactivecomponentsshowedmanyimportantpharmacologyactivities.Inordertofindaneasyandlow-costmethodtocontrolthequalityoftheherb,aCZEmethodforthedeterminationoftheactivecomponentsaloinandaloe-emodininAloeveraL.var.chinensis(Haw.)Bergerwasdevelopedinthiswor...