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作者:Arafet Bouaicha , Hatem Allagui , El-Hassane Aglzim ...
来源:[J].International Journal of Hydrogen Energy(IF 3.548), 2017, Vol.42 (17), pp.12738-12748
摘要:Abstract(#br)In this paper, we present a new methodology for determining the complex impedance parameters for a Proton Exchange Membrane (PEM) Fuel Cell in order to have a general model for embedded diagnosis. The modelling of Fuel Cells is a very important phase because it contr...
作者:Yunpeng Zhang , Xiaoyan Yang , Wenbing Wu ...
来源:[J].Soil Dynamics and Earthquake Engineering(IF 1.276), 2020, Vol.131
摘要:... Along the model of inhomogeneous medium, this paper subdivides the inhomogeneous soil region into certain sub-zones whose shear complex stiffness are derived by virtue of continuity conditions and plain strain model. To study the influence of soil plug effect, the additional ...
作者:Abdul Majeed , Muhammad Azhar Khan , Maria Yousuf Lodhi ...
来源:[J].Ceramics International(IF 1.789), 2020, Vol.46 (2), pp.1907-1915
摘要:... The large values of dielectric constant and impedance with moderate dielectric losses of these materials reflect their significant role in the fabrication of electronic devices as a radiation/microwave absorber or high frequency equipment components. Magnetic analysis show...
作者:Yao Ying , Yuzhao Gong , Dong Liu ...
来源:[J].Journal of Superconductivity and Novel Magnetism(IF 0.702), 2017, Vol.30 (8), pp.2129-2134
摘要:... The structure, morphology, magnetic properties, and complex impedance of all samples were investigated by X-ray diffraction, scanning electron microscopy, DC magnetic instrument, and precision LCR meter. The addition of MoO3 promotes the growth of larger and more...
作者:Amal Tarbi , E. H. Atmani , M. A. Sellam
来源:[J].Optical and Quantum Electronics(IF 0.987), 2017, Vol.49 (10)
摘要:In this work the diagnosis control of the complex impedance of selected perovskite compounds versus artificial neural network model optimized with the Levenberg–Marquardt algorithm is performed as detection of aging and degradation of materials usually requires destructive ...
作者:Tatsuya Nakamura , Masayuki Naoe , Yoshihiro Yamada
来源:[J].Journal of Magnetism and Magnetic Materials(IF 1.826), 2005, Vol.305 (1), pp.120-126
摘要:Abstract(#br)A multi-layer chip inductor (MCI) was fabricated using polycrystalline Li–Zn–Cu–Mn ferrite and the green-sheet technique, and its complex impedance spectrum was evaluated with the help of numerical calculations. The complex impedance spectra of the MCI compo...
作者:Yongping Pu , Zijing Dong , Panpan Zhang ...
来源:[J].Journal of Alloys and Compounds(IF 2.39), 2016, Vol.672, pp.64-71
摘要:... In addition, some electric characteristics of (dielectric, impedance and conductivity) of the glass-ceramics have been investigated in a wide rang of frequency (20 Hz–2000 kHz) and temperature (220–440 °C) ranges. The dielectric dispersion phenomenon in ε′ and ε'...
作者:Jaehwan Kim , Benny Suryanto , W. John McCarter
来源:[J].Cold Regions Science and Technology(IF 1.293), 2019, Vol.166
摘要:Abstract(#br)The influence of freezing and thawing on the complex electrical impedance of Portland cement mortars is presented with measurements obtained over the bandwidth 20 Hz–1 MHz. Samples were exposed to a cyclic temperature regime within the range −70 °C to +20 °C...
作者:K.K. Patankar , S.A. Kanade , D.S. Padalkar ...
来源:[J].Physics Letters A(IF 1.766), 2006, Vol.361 (6), pp.472-477
摘要:... The results on ME conversion are well accounted by measuring the complex impedance and analyzing their Nyquist plots.
作者:Yoshio Matsuzaki , Isamu Yasuda
来源:[J].Solid State Ionics(IF 2.046), 1999, Vol.126 (3), pp.307-313
摘要:Abstract(#br)By making clear the relationship between the cathodic limiting current density and R -type Warburg impedance used in the Randles type equivalent circuit, the limiting current density, as well as the exchange current density, of a porous La 0.6 Sr 0.4 MnO 3+ δ /YS...

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