Method: 89 patients treated with continuous blood purification therapy controlled itself, to summarize the nursing experience, and compared with its be fore-and-after therapy.
方法：连续性血液净化治疗89例实施自身对照，观察心理护理前后其心理状态的变化。
2
The variation of water and sand is studied under the influence of the rainfall and human activity in the foreandafter management of small watershed in gully region of the loess plateau.