نتایج جستجو برای: and wide frequency band
تعداد نتایج: 16920708 فیلتر نتایج به سال:
acknowledgements i wish to express my gratitude to all those who have helped me in preparing this thesis. i would like to express my deep gratitude to my respected advisor dr. kourosh akef, whose advice and comments helped me in the early stages of the research and throughout the writing process. i would also like to express my gratitude to dr. hajar khanmohammad whose invaluable guidance he...
based on the latest records of typhlops vermicularis merrem, 1820 from iran, this species is distributed in the northern and southern regions of the country. in this study, new records of typhlops vermicularis are presented and it is shown that distribution range of this species is extended towards the eastern and western iran, and according to the new distribution map, it can be assumed that t...
a novel silver (ag) nanocomposite electrode was proposed that fabricated from metal nanostructures and ionic liquids. the combined application of unique properties of nanomaterials and ionic liquids in the design of this ag nanocomposite results in electrodes with interesting advantages compared to the conventional metal disk electrode. in the first part of this thesis, the elecrocatalytic eff...
This paper deals with the theortical investigation on curved FSS with wide band frequency. The FSS structure is designed by projecting some circular patches of same dimension on the dome shaped substrate. Compared to conventional Flat type FSS this design provide more wider band of frequency(7.09 GHz). Theoretical investigations have been done by CADFEKO(suite5.5) Designer® software.
Pyridostigmine bromide (PB) is a reversible cholinesterase inhibitor. The aim of this study was to determine the effect of orally administration of single dose sustained-released tablet of pyridostigmine bromide (PBSR) on the frequency domain indices of heart rate variability (HRV). Thirty-two healthy young men were participated in this study. They were divided into 2 groups; the pyridostigmine...
The analysis of DAR IMPATT diodes has been realized on basis of the precise drift-diffusion nonlinear model. The admittance characteristics of the DAR diode were analyzed in very wide frequency band from 30 up to 360 GHz. The energy characteristics have been optimized for the second high frequency band near the 220 GHz.
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