نتایج جستجو برای: electromagnetic field measurement

تعداد نتایج: 1247827  

Journal: :Journal of Mathematical Analysis and Applications 2002

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی برق 1383

با پیشرفت تکنولوژی و افزایش فرکانس و کاهش ابعاد در بردهای الکترونیکی، تاثیرگذاری و تاثیرپذیری خطوط انتقال درون برد بر هم افزایش یافته است. برای اطلاع از میزان این تاثیر نیاز به محاسبه همشنوایی بین خطوط جدی می شود. همچنین برای اطلاع یافتن از اینکه برد حاصل استانداردهای emc را بر آورده می کند، باید میزان ولتاژ و جریان القایی در انتهای خطوط هنگامی که این برددر حضور میدان الکترومغناطیس خارجی قرار گ...

Journal: :amirkabir international journal of electrical & electronics engineering 2015
a.n. askarpour y. zhao a. alù

an important property of electromagnetic fields, which arises from the interaction between fields and chiral molecules, is called optical chirality. by enhancing this field property, while maintaining constant input power, we are able to increase absorption of circularly polarized light by chiral molecules of a certain handedness. this enhancement is achieved through the use of achiral plasmoni...

2007
S. Coenen S. Tenbohlen S. M. Markalous

For examination and diagnostics of the insulation quality of high voltage devices the measurement of partial discharge (PD) is accomplished. The conventional PD measurement according to IEC60270 is in some situations not sensitive enough because of the high interference level in field. The development of an unconventional measuring method using electromagnetic probes is presented. These probes ...

Journal: :نشریه دانشکده فنی 0
حسن منصف طاهر قمیان

there are fewer problems encountered with optical voltage transducers in comparison with their inductive and capacitive counterparts. although capacitive and inductive transformers are used vastly for the purpose of measurement and protection in the networks, they cause problems such as core saturation and improper transient responses which decrease the accuracy of measurement and eficiency of ...

Journal: :avicenna journal of phytomedicine 0
shokat majidian eydgahi research center for animal development, applied biology & biology department, mashhad branch, islamic azad university, mashhad, iran javad baharara research center for animal development, applied biology & biology department, mashhad branch, islamic azad university, mashhad, iran saeideh zafar balanezhad research center for animal development, applied biology & biology department, mashhad branch, islamic azad university, mashhad, iran majid asadi samani student's research committee, shahrekord university of medical sciences, shahrekord, iran

objective: much attention is paid to angiogenesis due to its mutual role in health and disease. therefore, the effect of various chemical and physical agents on inhibition of this process has been recently studied. this study was conducted to investigate the synergic effect of glycyrrhizic acid and electromagnetic field on angiogenesis. materials and methods: in this experimental study, 44 ross...

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