散货船装载易流态化货物运输

文章从易流态化货物含水量、流动水分点、适运水分极限、含水量测试程序,以及IMSBC CODE中列明的、常见的几种易流态化货物对船舶运输的影响进行分析,规范了船舶装载易流态化货物操作流程,建立了风险评估和风险管理有效机制,确保船舶运输安全。

Impulse force reductions and their effects on WBV exposures in high impact shovel loading operations

When shovels load the dump trucks with over 100-ton passes under gravity dumping conditions, they will create a large impact force on the dump truck body which generates high frequency shock waves which expose the operators to whole body vibrations （WBV）. The main cause of such truck vibrations is the large impact force due to the gravity dumping of large tonnage passes. Therefore a rigorous mathematical model has been developed for the impact force containing all the necessary factors upon which it depends. Latter, a thorough analysis shows that percentage reduction of 7.19%, 9.40%, 13.27%, 14.8%, 17.30% and 18.13% can he achieved by reducing the dumping distance to 6.33 m, 6.0 m, 5.5 m, 5.33 m, 5.0 m and 4.9 m, respectively, as compared to when the dumping distance was 7.33 m. Even more reduction in the magnitude of impact force can he observed if the shovel pass gets divided into more than two sub-passes. Therefore, these models can he used to figure out the number of sub-passes into which a single ore pass can he divided and/or the extent to which the dumping distance can he reduced which would reduce the impact force significantly enough to obtain safer yet economic operations.

用过氧化氢低温等离子体灭菌对腔镜器械的处理方式探讨

目的:探讨使用过氧化氢等离子体对腔镜器械灭菌处理方法。方法:在2019年,本院消毒供应室新进一台过氧化氢低温等离子体灭菌器,使用过氧化氢低温等离子体灭菌器对腹腔镜、胸腔镜、支气管镜等腔镜类器械灭菌,进行循环灭菌200次,观察灭菌结果,总结导致灭菌失败的具体原因。结果:178次灭菌循环后,灭菌物品的化学检测和生物监测均符合灭菌要求,12次灭菌出现真空超时报警问题,2次器械损坏问题,4次扩散期压力低报警问题,4次器械清洗不彻底问题。结论:使用过氧化氢等离子体灭菌器对腔镜器械灭菌时,腔镜器械的预处理及装载操作对灭菌效果有很大影响。