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- 저자 : Mahesh Swamy (검색결과 2 건)
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Goyal Sunil,Ravunnikutty Mahesh,Swami Himanshu,Yadav Sneha 대한청각학회 2024 Journal of Audiology & Otology Vol.28 No.2
Intralabyrinthine schwannomas (ILSs) are rare tumors involving the otic capsule. Notably, they are often misdiagnosed because their symptoms mimic those of other, more common inner ear pathologies. Diagnosis requires high-resolution contrast-enhanced magnetic resonance imaging (MRI), which reveals filling defects (using a T2-weighted MRI sequence) or focal enhancement (using a T1-weighted MRI sequence with gadolinium enhancement) in the inner ear. A 52-year-old male patient with intractable vertigo or single-sided deafness should raise suspicion of this clinical entity as a differential diagnosis. Translabyrinthine excision of the tumor along with auditory rehabilitation using a cochlear implant can provide good outcomes with minimal morbidity in carefully selected cases. Here, we present an interesting case of a transmodiolar ILS mimicking Meniere’s disease, wherein surgery using the translabyrinthine approach and an extended cochleostomy yielded favorable outcomes.
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Power-Electronics Contributing to the Green and Clean World
Toshihiro Sawa,Tsuneo Kume,Hidenori Hara,Mahesh Swamy 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
Invention of the electric motor has since, spurred its wide spread application to convert electrical energy in to mechanical work. As its usefulness grew, engineers were challenged to develop control techniques to match the speed and torque of the motor to that of the driven load to achieve optimal performance. The advent of Power Electronics was crucial in achieving variable speed operation of motors. Hence, it can be said that Power Electronics has contributed to the prosperity of today’s worldwide economy and allowed people to lead a joyous and peaceful life. However, at the same time, the amount of electrical energy consumed by electric motors accounts for the We have to be aware of this fact and its consequential influence on global warming. This paper discusses variable speed motors drives. It reviews Yaskawa’s contribution to industrial inverter drives and introduces a technology road map to realize a “Greener World” with all its future prospects.
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