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An onsite testing based on eight-site air sampling was carried out in an airlaid papermak-ing workshop in Tianjin, China. By theoretical calculation, super absorbent polymer (SAP) size and its existent state in indoor static airflow were obtained. SAP content in the sampled air was tested through chemical analysis method and found to be 3.0-7.2 times that of the human health limit in production areas. The concentrations of total suspending particles (TSP) and respirable particles were achieved by weighing. Particles of the most concern differ for varied function areas. Particles smaller than 10μm are mostly produced in the main production process, and 73%-90% particles generated in packing areas are larger than 10μm. SAP raw material particles can easily changed to suspending form by inevitable extrusion and frication. Correlation between respirable particles and TSP agrees well with that in atmospheric environment. 相似文献
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本文通过对心理健康的标准的表述,对如何通过体育教学训练来提高飞行学员心理健康和改善措施进行了阐述,得到了预期的效果。 相似文献
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裴晶晶 《作文世界(高中新语文伴侣)》2007,(4):31-32
一天,狐狸饿得慌就出来找东西吃。它东找找,西找找,正好看见小白兔在草地上玩耍。狐狸想机会来了,它眼珠子骨碌一转说:“小白兔你的毛又白又软真好看呀!能不能让我摸一摸呀?”小白兔听了得意极了,不由自主地往狐狸身边走去。狐狸看着离自己越来越近的小白兔,馋得口水都流了出来,待小白兔一靠近,狐狸凶相毕露,立刻扑了过去咬住小白兔的脖颈。这时,小白 相似文献
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