[Application of autogenous bone pate for atticus reconstruction and mastoid cavity obliteration in tympanoplasty with mastoidectomy].

Objective: To observe the curative effect of autogenous bone pate for atticus reconstitution and mastoid cavity obliteration in canal wall down mastoidectomy with tympanoplasty.

Method: The 60 patients (60 ears) of cholesteatomatous tympanitis were randomly divided into 2 groups. The experimental group underwent canal wall down mastoidectomy with tympanoplasty and using autogenous bone pate for atticus reconstitution and mastoid cavity obliteration.

[Influence of BSA on adsorption equilibrium of nickel onto delta-MnO2].

The influence of BSA on adsorption equilibrium of Ni2+ onto delta-MnO2 had been investigated using a batch method. It was showed that the adsorption-pH curves of Ni2+ onto delta-MnO2 were "S-shape" at [BSA] = 10 mg x L(-1), and the leaping range of adsorption would move to high value of pH in the presence of BSA. The extent of effect had relation to the adding order and the concentration of BSA, and the trend was IV (BSA added first) > III (Ni2+ and BSA added simultaneously) approximately II (Ni2+ added first).