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Aspergillus oryzae, isolated from the starch rich litter soil, produced amylase when banana fruit stalk was used as substrate in a solid state fermentation system. The effects of incubation period, pH, temperature and various carbon sources on the production of amylase were studied. A maximum yield of 380U/mg was recorded on 96th hour of incubation. The(More)
— Multilevel inverters are extensively used in various voltage applications. Harmonic elimination in multilevel inverter is a complex optimization problem. A fresh nine level hybrid multilevel inverter using harmonics elimination is presented in this paper. This method involves less number of switches associated with more number of voltage levels. The(More)
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