马桑提取物的抑菌作用和抑菌机理的初步研究

From the experiment of extraction of leaves of Coriaria sinica Maxim leaves and the effective inhibitory against 19 kinds of the fungus and bacteria,the result showed the alcoholoes compounds was more efficious than aliphatic compounds to every microoganism.For Ralstonia solanacearum as an example,Studying on the way of the suppression medicament working,it was found that the compoundscan controled Ralstonia solanacearum during its logarithmic phaseand stable trophophase.Through the photos of electron microscope,it was found that the compound can make the bacteria’chromatin pycnosis and appeard many(vacuoles,)destruct the formation of the cell wall then break the bacteria.

垃圾干发酵沼气池杀卵灭菌实验研究

本文用干发酵沼气池地处理城市生活有机垃圾,观察杀卵灭菌的卫生效果,结果表明:钩虫卵和蛔虫卵的杀灭效果均随沼气池发酵时间的增长而显著增高,经发发酵40天以上,沼气池内各层钩虫卵全部死亡;经发酵4个月时,沼气池内上层蛔虫卵死亡率为85％,中层为95％,下层为100％,同时,细菌总数比发酵前下降98％以上,大肠菌群完全转阴。可见,干发酵沼气池杀卵灭菌效果是肯定的,但要完全杀死寄生虫卵,达到无害化处理的卫生评价指标,干发酵周期以4个月为宜。

动力设备深基坑工程支护方案的选型

本文结合动力设备基坑支护工程方案设计的实践,阐述了动力设备深基坑支护方案合理选型的影响因素,针对场地的实际情况选择分段的土钉喷锚支护形式,并对基坑土方开挖和土钉喷锚施工提出合理的施工顺序和要求,为同类基坑支护提供工程参考与借鉴。