every year . previously, the husks are used as fuel for cooking , used in the oven , baked bricks , ashes, partially burned porous compost for fertilizing soil . in recent years due to increasing rice production to rice husk annual emissions is huge . many places husks become problems . the indiscriminate...
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egypt, where some were recognized as gemstones. the first chemical analysis that succeeding in distinguishing a common beryllium mineral, beryl, from other aluminum silicates was completed in by the chemist louis vauquelin, to whom credit is given for the discovery of this element. editors of the journal...