通风服

人类为改善生活和工作环境的温度,进行了不懈的奋斗,但是严寒和酷热仍在威胁着人们的健康,尤其是某些工作环境温度十分恶劣,很难做到控制。 保证人类机体内环境恒定,是正常生命活动的前提。在外界气象条件变化不大的场合,身体可以依靠自身的生理机制,保持体内热含量在适宜的范围,一旦外界气温急剧变动,超出人体内在的调节能量时,则必须采取人工调节系统,以补充人体自身不足,通风服即为实现这一目的产物。     

微真空消声器的应用

成都钢铁厂家属区职工食堂一台0.5t/h的立式弯水锅炉,距离职工宿舍仅5m。该锅炉昼夜定时排污,产生的噪声对职工造成极大的危害,群众反映十分强烈。为此,我们根据生活用锅炉定时排污产生的噪声的特点,设计、制做了一台锅炉排污微真空消声器,使用效果很好。经国家专利局审查,锅炉排污微真空消声器于1992年2月被授予实用新型专利权。     

福临祸至

①、罗岭是块风水宝地,外商在这里建了一个渡假村,宁静的环境增加了几分喧嚣。、’,,、L一一,一/r:j/≥0{ ,。:f、 ’,,l、 ‘ ’‘～一,,前呤羹①、罗岭是块风水宝地,外商在这里建丁一个渡假村,宁挣的环境增加了几分喧嚣。⑧、外商梁先生又看中村后一片坡地,想开发成为高尔夫球场。村长未听条②、旅游业带旺了村里的小工艺、小饮食,山村的日子。红红火火。⑤、村民受特别优惠,连稍有劳力的老人也被招去当清洁工、保管员。④、球场土动工,植被被铲光,山坡被推平,山泉被堵死了,唯独几棵老树在唉声叹气。⑦止目状告到村长家,村长说:f_不要大…     

AutoCAD在面具罩体设计中的应用

面具罩体设计概述 罩体是指防毒面具或呼吸器中使面罩各部件(如眼窗、呼吸气系统、通话器和阻水罩等)组成一个整体的骨架,一般由橡胶制成。罩体设计不仅要确定罩体的总体结构及与各部件连接的接口结构和位置、大小等,而且要确定与人员面部皮肤起密合作用的密合框的结构型式和尺寸大小,涉及面罩十多项技术指标,是面罩总体设计中非常重要的一个环节。罩体设计质量的高低,决定了面罩总体性能的优劣。     

武钢供水厂以班组建设为中心搞好安全生产

我厂共有7个车间,66个水站、变电所,141个班组。各车间、站所分散在武钢方圆几十里,分布面广。根据我厂点多、面广、战线长、作业人员分散、作业危险性大的特点,寻找一条适合我厂班组安全建设的新路子,是我们不断探索的一个课题。几年来,我们坚持围绕以班组安全建设为中心,以安全教育为基础,以安全管理保证体系为手段,以开展安全合格班组达标活动为重点,取得了一定成效,连续14年无工亡事故,近五年无重伤,年千人负伤率在1.3以下,多次被评为湖北省和武汉市安全生产先进单位。     

三十六瓶酒勾掉四条命——南安市"7·26"特大交通事故引发的深思

一个青春正茂的男子痛失前程命归车祸 一个年轻俏丽的姑娘泪别亲人魂归黄泉 一对妙龄少女姐妹不幸花季凋零灰飞烟灭 三十六瓶酒迸发一个令人惋惜的人间悲剧     

Health and environmental assessment of mercury exposure in a gold mining community in Western Mindanao, Philippines

The small-scale gold mining activities using mercury began in the late 1980s in Sibutad, Western Mindanao. It is located very near the Murcielagos Bay with tailing ponds directly discharging into bodies of water. This cross-sectional study aimed to determine the health and environmental effects of gold mining activities on the community. Residents were randomly selected and classified into two groups, namely, the directly exposed and indirectly exposed populations using a set inclusion criteria. Complete medical and laboratory examinations were performed. Environmental and biologic samples were collected for total mercury and methylmercury determinations. The results showed that the directly exposed group had significantly higher mean blood total mercury and methylmercury levels in comparison with the indirectly exposed population. Although there were no significant differences between hair total mercury and methylmercury levels, there was a trend for higher levels of these biomarkers among the directly exposed residents as compared with the unexposed group. The absence of statistically significant differences may be attributable to the small sample size. Ambient air quality monitoring for mercury exceeded the allowable levels. However, levels of mercury in drinking water and sediments were within allowable limits. Frequency of gastrointestinal complaints was significantly associated with elevated hair methylmercury levels (p=0.02). Also, there appears to be a trend towards higher blood total mercury levels and frequency of gastrointestinal complaints (p=0.09). An interesting finding in this study was the increasing incidence of elevated diastolic blood pressure with elevated hair total mercury levels (p=0.07). Mercury storage at home is a risk factor.