Didarul Islam

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Lactic acid bacteria are very significant to human health due to the production of some antimicrobial substances and ability to inhibit pathogenic bacteria. In this study, Lactobacillus strains were isolated from yogurts of Khulna region, Bangladesh and identified as Lactobacillus paracasei ssp. paracasei-1. The antimicrobial activity of cell free(More)
Tribological characteristics of steel combinations are observed in this study using rotating tribometer. Experiments are done under different roughnesses ofpin slides on stainless steel disc for different operating conditionsCertain trends are obtained between friction and rubbing durations. During experiment, it is foundthat there are significant(More)
Seyed Sina Sebtahmadi 1, Hanieh Borhan Azad 2, Didarul Islam 1, Mehdi Seyedmahmoudian 3, Ben Horan 3 and Saad Mekhilef 1,* 1 Power Electronics and Renewable Energy Research Laboratory (PEARL), Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia; sebt@siswa.um.edu.my (S.S.S.); didarul@siswa.edu.my(More)
Due to control simplicity and easy applicability DTC has become popular and adopted in many industrial applications. But it still suffers from a few drawbacks like- comparatively large torque ripple in a low speed range and its performance is highly depended on speed of the motor and hysteresis bands of torque and flux ripple. To address these problems,(More)
Direct Torque controlled induction motor (DTC-IM) drives have been used widely over last few decades. DTC-IM drives use the stator resistance of the motor for stator flux estimation which directly depends on the stator resistance of IM. Proper estimation of the stator resistance is very important because stator resistance varies due to the increase in(More)
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