STUDIES ON STEPWISE STABILITY CONSTANTS OF COORDINATION COMPOUNDS FROM SULFONATED SHEOAK TANNIN WITH METAL IONS

The stepwise stability constants of coordination compounds from sulfonatedsheoak tannin with metal ions have been determined by pH potential method with catechol asmodel compounds at 20℃and constant ionic strength.

人类听性脑干反应AR模型参数的逐步判别分析

对正常听力20耳及蜗后病变14耳听性脑干反应用6阶AR模型参数进行分析,求出各阶最小均方差和(e0)及AR模型系数a1-a6.用多元逐步回归方法找出方差贡献较大的参数e0,a3和a6,并分别用Fisher准则及Bayes准则进行逐步判别分析,判别函数为:Y_1=0.8047 x_1-2.8044 x_2-3.9784,Y_2=0.1198x_1+1.7669x_2-1.7236(x_1=e0,x_2=a3),误判率为2.9％.结果表明用微机实现ABR自动诊断的可能性.