【摘 要】
：
报道：为了掌握水泥行业职业危害情况,我们于1991年8～10月对全区县以上18个水泥厂进行了劳动卫生学调查。结果表明:水泥行业粉尘、噪声危害严重。粉尘浓度测定110个样品,浓度范
【机 构】
：
临沂地区卫生防疫站,临沂地区卫生防疫站,临沂地区卫生防疫站
论文部分内容阅读
报道：为了掌握水泥行业职业危害情况,我们于1991年8～10月对全区县以上18个水泥厂进行了劳动卫生学调查。结果表明:水泥行业粉尘、噪声危害严重。粉尘浓度测定110个样品,浓度范围为1.10～609.87mg/m~3,平均77.23mg/m~3,平均超标7.8倍,点合格率仅为13.64％;游离SiO_2含量分析,生料尘分析48个样品,游离SiO_2含量为0.68～15.67％,平均6.83％;熟料尘分析47个样品,游离SiO_2含量为0.19～9.84％,平均3.24％,生、熟料尘中游离SiO_2含量比较,二者有显著差异(P<0.05);分析62个样品的分散度;其均数构成比为:<2μm者占1.66％、2～5μm者占39.68％、
Report: In order to grasp the occupational hazards in the cement industry, we conducted a survey of labor hygiene in 18 cement factories above the county level from August to October 1991. The results show that: the cement industry dust, noise serious harm. 110 samples with the concentration range of 1.10 ~ 609.87mg / m ~ 3 and an average of 77.23mg / m ~ 3 with an average of 7.8 times exceed the standard of 13.64%. The content of free SiO_2, The free SiO_2 content was 0.68 ~ 15.67% with an average of 6.83%. 47 clinker dust samples were analyzed with free SiO_2 content of 0.19 ~ 9.84%, an average of 3.24%, comparing the free SiO_2 content in raw and clinker dust, (P <0.05). The dispersion of 62 samples was analyzed. The average ratio of the two samples was: 1.66% for <2μm, 39.68% for 2-5μm,
其他文献
The paper presents the modeling and simulation of a novel silica gel+water chiller cycle using dielectric heating (microwave) method.In conventional adsorpt
我养兰花20多年了,最初几年由于对兰花的习性及生长规律了解不够,有过几次失败的教训,至今难忘。▲冬季花蕾缩头夏秋季春兰生长很好,长出多个花蕾。霜降后搬到室内,由于未经
众所周知,蜂蜜具有医疗作用。我们想提醒读者注意的是,它的微量元素成份。目前,医学上将注意力集中于蜂蜜对中老年疾病的防治上。1963年,世界卫生组织在基辅召开的世界老年
黄伟菁,毕业于台湾辅仁大学大众传播系,资深唱片经理人,从事华语唱片业将近二十年,先后成功打造了潘美辰、张学友、黎明、郑中基、金城武、何润东、胡彦斌、许巍、花儿乐队等
马先生就这样走了,虽然谈不上心痛(我想,真正心痛的是和他走过几十年路程的家人和像我师父丁广泉这样的人吧),但我心里依然感觉很突然。虽然感情不算深,我和我的师哥莫里斯却
As combat aircraft become more and more maneuverable, the need to understand the behavior of aircraft in dynamic, changing flow field becomes more important
In this paper, we use Euler equations to depict condensed explosives detonation flow field, Lee-Tarver chemical reaction rate model to describe the chemical
In this article, we investigate the energy cascade of three-dimensional turbulent flows, in which the breakdown process of eddy is quasi-self similar.Mathem
Numerical simulation has been performed by solving full Navier-Stokes equations governing the three-dimensional unsteady compressible flows.The main goal of
This paper describes the atomization mechanisms and characteristics of a new air-assist micro-atomizer (AMA).The pneumatic twin-fluid micro-atomizers are de