Analysis of risk factors for infection suggested contamination of indoor kitchen, bathroom, toilet, and waste disposal area.
One probable explanation is that the indoor spas have no air compressors and therefore fewer aerosols.
They represent a large panel of possible situations in indoor environments.
Experimental data show the effectiveness of the designed sensor in indoor environments.
This experiment is intended to simulate an indoor environment such as a mine, factory building or subway tunnel.
However, one important issue that was not considered in this study concerns indoor air pollution due to inefficient use of crop residues in rural households.
This is crucial for policies to combat indoor air pollution.
During the 1830s and 1840s as respectable politics moved to indoor venues, the authorities increasingly regulated and restricted remaining open-air gatherings.
