to separate mixtures of liquids by exploiting differences in the boiling points of the different components. the technique is widely used in industry, for example in the manufacture and purification of nitrogen, oxygen and the rare gases . however, one of its best known uses is the refining of crude oil...
hybrids facilitated cultivation of three crops with to % reduction in seed production cost. higher dose of nitrogen followed by foliar application of boron and zinc improved seed quality and yield. employing honeybees for hybrid seed production was not found feasible in cotton. coating of cotton seeds...