In heavy metal producing industries such as electroplating, metal-finishing, steels, chemical manufacturing, leather tanning, the handling of effluent has always been the main concern. Improper treatment to the wastewater before it is drained out into rivers or oceans will cause a great pollution an.....
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A novel zone melting method to purify industrial phosphorus is introduced. Since there is no chemical solvent for phosphorus, chemical extraction purification does not work for arsenic purification. Zone melting is a method for removing impurities from solid materials. This method with a special set.....
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Almost all circuit systems require a voltage reference. A voltage reference provides a temperature and supply independent voltage. In addition, this voltage reference mudt be able to operate under low-voltage low-power conditions and can be implemented in standard CMOS process instead of expensive B.....
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