نتایج جستجو برای: dewar resonance energy

تعداد نتایج: 860821  

Journal: Iranian Journal of Oil and Gas Science and Technology 2014
Kobra Kalvandi, Sina Sodagar,

Resonances are intrinsic characteristics of an elastic object, which are completely independent of the source of excitation. The appropriate utilization of the information contained within the resonance spectra and the identification of the resonance frequencies of the object can be used as a potent tool for material characterization. In this paper, a new mathematical model for the wave diffrac...

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ژورنال: پژوهش فیزیک ایران 2012
انصاری, سونیا, مردانی, محمد,

In this paper, we studied the electronic conductance of a polypyrrole polymer, which is embedded between two semi-infinite simple chains by using Green’s function technique in tight-binding approach. We first reduced the center polymer to a one dimensional chain with renormalized onsite and hopping energies by renormalization method. Then, we calculated the system conductivity as a function of ...

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