id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-12524		cet-12524		6	.pdf	application/pdf	3367	168	46	However, the H2S and NH3 oxidation was affected by the daily changes in gas concentration. The increase of gases concentration at the last week of the dry season resulted in a gradual decrease of H2S and NH3 removal efficiency for both biofilters.	cache/cet-12524.pdf	txt/cet-12524.txt