Using Luseweilei insecticide to control Dendrolimus superans T.

Luseweilei is an easily-bursted microcapsule insecticide. A test of effectiveness of the insecticide to control the larvae of Dendrolimus superans T. was carried out in larch forest in Baoan Forest Farm of Nehe City, Heilongjiang Province, in April 2001. The solutions of different concentrations (1:150, 1:250, 1:350, and 1:450 Luseweilei : water) were sprayed on the larch trunk before the overwintering larvae climbing on trees and the spraying lengths (height) designed were 1.0, 2.5, and 3.5 m high from ground. The control result showed that spraying 150-, 250-, and 350-fold solutions of the insecticide all produced a good control result, with a mortality rate of 97%, but the 450-fold solution only produced 70% mortality. It is concluded that this insecticide can be used as a kind of good insecticide to control the overwintering larvae of D. superans in spring. Spraying 350-fold solution of easy-burst microcapsule insecticide and one meter spraying length are recommended for the future application..

重型脑外伤早期实施机械通气的临床研究

目的探讨重型脑外伤患者早期实施机械通气的价值。方法将81例重型脑外伤患者随机分为对照组和观察组。两组均按常规进行内科治疗及相应的手术治疗;对照组38例先予鼻导管持续吸氧,出现呼衰时使用机械通气;观察组43例伤后或术后即刻实施机械通气;比较两组通气前后动脉血氧分压(PaO2)、二氧化碳分压(PaCO2)、氧饱和度(SaO2)等血气指标变化及伤后半年格拉斯哥预后评分(GOS)。结果两组患者机械通气后PaO2、PaCO2、SaO2等血气指标变化均有显著改善,但观察组通气效果更好,通气时间更短;GOS显示,观察组生存质量优于对照组(P<0.05)。结论对重型脑外伤患者早期实施机械通气能更有效改善重型脑外伤患者的缺氧状态,缩短机械通气时间,能改善生存者的生存质量。