نتایج جستجو برای: frequency shift
تعداد نتایج: 608559 فیلتر نتایج به سال:
Aim: The aim of this research was comparison of IHD’S risk factors between shift workers in automobile industries in Iran. Materials & Methods : Knowledge of IHD risk factors and demographic data have gathered by using hygienistic files of workers, data had been analyzed with SPSS 11.5 and significance’s level (p value) was less than 0.05. Results: The mean of HDL cholesterol in one-shift...
We have obtained empirical relations between the p-mode frequency shift and the change in solar activity indices. The empirical relations are determined on the basis of frequencies obtained from BBSO and GONG stations during solar cycle 22. These relations are applied to estimate the change in mean frequency for the cycle 21 and 23. A remarkable agreement between the calculated and observed fre...
The present paper investigates the potential application of graphene sheets with attached nanoparticles as resonant sensors by introducing a nonlocal shear deformation plate model. To take into account an elastic connection between the nanoplate and the attached nanoparticle, the nanoparticle is considered as a mass-spring system. Then, a combination of pseudo-spectral and integral quadrature m...
Abstract - This paper presents a new design of microwave microelectromechanical systems (MEMS) phase shifter for dual band wireless local area network (WLAN) applications. A bit is designed which product a constant phase shift of 11.25° by switching between two line that consist of 12 and 6 unitcells in each frequency band. A unitcell is constructed by gold membrane suspended over the coplanar ...
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