反话 发表于 2025-3-28 15:58:34
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Min Li,Zhiying Tu,Zhongjie Wanglts in the introduction and deposition of various particulate substances in the human respiratory tract, creating a potential health hazard. The assessment of this hazard and appropriate countermeasures to be taken require understanding and estimation of the local and regional deposition of inhaled漂白 发表于 2025-3-29 02:10:38
https://doi.org/10.1007/978-3-319-13635-6. When effective engineering controls are not feasible or while they are being instituted, an appropriate respirator must be used. Respirators can be classified into two types: air-purifying respirators that remove contaminants from the ambient air and atmosphere-supplying respirators that provide afluffy 发表于 2025-3-29 03:36:51
https://doi.org/10.1007/978-3-319-13635-6to the systemic circulation to exert their effect. Since the lung functions as a filter it is important to know the optimal particle size distribution to get an optimal deposition in the lung for the species to be studied. In the search for better drugs for local treatment of inflammatory diseases iAtmosphere 发表于 2025-3-29 08:56:56
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https://doi.org/10.1007/978-1-84882-063-0he prevalence of chronic disease and symptoms; 3) lost time from work or school; and 4) reduced lung function baselines. When multiple regressions are performed which include pollutant vapors as well as PM, the PM variable tends to be most influential. The only exceptions appear to be hospital admisectropion 发表于 2025-3-29 18:44:44
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One-Dimensional Fourier Transforms, for example, Heyder, et al., (1988) showed appreciable bolus dispersion in the lung periphery which could not be accounted for solely by the particles’ intrinsic motion (Brownian motion and gravitational sedimentation). This suggested the existence of convective mixing at the level of acinus. Alth评论性 发表于 2025-3-29 23:57:56
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