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The major goal of our study was to demonstrate how to eliminate zinc from the products of waste tire pyrolysis and avoid its environmental circulation. The new tire utilization manner consists of a separate combustion of the pyrolytic char containing 5.1 wt. % zinc and a collection of such obtained ash (10.4% yield) that contains 42 wt. % of zinc. The ash is a good candidate for metallurgical recovery...
In the years 1977 - 1980 the feeding experiments with high concentration of nitrogen compounds in the diet of ewes were carried out. Both during the summer and winter periods the feeding system "ad libitum" was applied. The lower protein-energy ratio diet gave better results in relation to the wool quality and fleece weight, limited the concentration of nitrates in ewes milk, and caused...
Соответствующий опыт проводился на 4 черно-пестрых бычках с вeсом тела 199-223 кг В I-ой части опыта животных кормили вволю исключительно силосом из многоцветкового плевела, а во II-ой части - силосом изготовленным из выжимков указанного злака. Силос из выжимков изготовляли после удаления сока из зеленой массы. Выжимки силосовали в полиэтиленовых мешках. Содержание сухого вещества (в %) в силосе из...
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