id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajema-1804	Kuchkarova Ch. Kh.	Principles of Development of Engineering Ecology	2023	3	.pdf	application/pdf	1194	65	58	The presence of tetra-ethyl lead substance in gasoline - after their use in automobile transport, causes the spread of various toxic substances of lead substance with oxide, nitrate, sulfate, chloride compounds into the environment [8]. When burning coal, together with smoke and ash, more substances are released into the environment compared to the amount of its extraction, for example, magnesium 1.5, molybdenum Z, arsenic 7, uranium, titanium 10, aluminum, iodine, cobalt 15, mercury 50, lithium, boron, strontium, beryllium, zirconium spread 100 times more.	cache/ajema-1804.pdf	txt/ajema-1804.txt