Phase maps for particles and microorganisms in animal quarters
1975
Weihe, W. H.
Measurements of fallout of particles and microorganisms were carried out during the light and dark period in animal rooms occupied by rats, rabbits, cats and monkeys. Correlations between both parameters were established. The 24-hour mean was calculated and the percentage deviation of the individual measurements from this mean used for the elaboration of phase maps. For rats there is a high increase of particle and microorganism emission during the night following the activity cycle, while for cats and monkeys emission increases only during the feeding period. In rabbit rooms there is a nearly equal emission during day and night.
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