منابع مشابه
Effect of a Coating Induced Residual Stress on Magnetic Domain Structure in Non-Oriented Electrical Steels
To produce the magnetic core of the electric motors, non-oriented electrical steels (NOES) are used. Recently much attention has been focused on optimizing the efficiency of electric motors and, as such, various materials aspects of NOES are being re-examined. Typically, NOES are used in the form of laminations (~200-1000 μm thick) with an electrically insulating coating applied to the surface....
متن کاملEffects of Stress on the Magnetic Properties of Steels
where T is temperature, S is entropy and J.1oaM2/2 is the self-coupling energy. The dimensionless term a. has been defined previously [2] and represents the strength of the coupling of the individual magnetic moments to the magnetization M. The effective magnetic field causes a change in magnetization, and therefore is determined by the derivative of this energy with respect to magnetization M....
متن کاملInvestigation Non-magnetic Amplifiers Applied in an MRI System
INTRODUCTION: In our previous work on passive current source RF power amplifiers, it was noted that additional inter-element isolation in a parallel transmit coil array was possible when the lengths of the coaxial cables that connected the amplifiers to the coils were reduced [1,2]. In addition, shorter cable lengths also lead to reduced power loss and cost. This can be achieved by placing the ...
متن کاملinvestigation of thermal comfort properties of woven sport fabric using blend of estabragh fibers
امروزه لباس در نظر ورزشکاران و کسانی که برای اوقات فراغت خود و یا برای رسیدن به اندامی متعادل، ورزش می کنند؛ بسیار با اهمیت است. احساس مطلوب از لباس در زمره خصوصیات راحتی پوشش می باشد. خصوصیات انتقال رطوبت لباس، در ارزیابی راحتی حسی و حرارتی منسوجات تولید شده از آن ها بسیار مهم است. هدف از این تحقیق، معرفی پارچه جدید است که متشکل از الیاف استبرق با خواص منحصر به فرد می باشد. استبرق لیف طبیعی تو...
synthesis of amido alkylnaphthols using nano-magnetic particles and surfactants
we used dbsa and nano-magnetic for the synthesis of amido alkylnaphtols.
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ژورنال
عنوان ژورنال: The Journal of the Japan Institute of Metals
سال: 1942
ISSN: 0021-4876
DOI: 10.2320/jinstmet1937.6.5_241