重核快三裂变反应角分布与碰撞参数的关系

文章研究了197Au+197Au体系快三裂变反应的角分布与碰撞参数的关联性,并与实验上角分布数据做对比,结果表明该裂变是深度非弹性或准弹性散射过程,易发生在中等和大碰撞参数下。     

抽搐患者使用安定静脉推注后的护理探讨

目的：探讨抽搐患者使用安定静脉推注后的护理.方法：20例抽搐患者用安定静脉推注后,连接心电监护仪,监测呼吸、心率、血压、血氧饱和度等;连接鼻导管吸氧.结果：抽搐症状短时间内全部得到缓解.结论：及时发现,早期处理.可避免护理不良事件发生,保障抽搐患者安全渡过疾病抽搐征象发作期.     

二维变系数反应扩散方程的差分格式

研究了二维抛物型方程的差分格式,得出了一种对时间具有二阶精度、对空间具有四阶精度的紧交替方向差分格式,此种格式将常系数的情况推广到了含时间的变系数的情况．     

Hg0 absorption in potassium persulfate solution

The aqueous phase oxidation of gaseous elemental mercury （Hg^0） by potassium persulfate （KPS） catalyzed by Ag^＋ was investigated using a glass bubble column reactor. Concentration of gaseous mercury and potassium persulfate were measured by cold vapor atom absorption （CVAA） and ion chromatograph （IC）, respectively. The effects of pH value, concentration of potassium persulfate and silver nitrate （SN）, temperature, Hg^0 concentration in the reactor inlet and tertiary butanol （TBA）, free radical scavenger, on the removal efficiency of Hg^0 were studied. The results showed that the removal efficiency of Hg^0 increased with increasing concentration of potassium persulfate and silver nitrate, while temperature and TBA were negatively effective. Furthermore, the removal efficiency of Hg^0 was much better in neutral solution than in both acidic and alkaline solution. But the influence of pH was almost eliminated by adding AgNO3. High Hg^0 concentration has positive effect. The possible reaction mechanism of gaseous mercury was also discussed.