نتایج جستجو برای: shielding materials
تعداد نتایج: 444083 فیلتر نتایج به سال:
Modern electronic devices need effective shielding from external Electromagnetic Interference (EMI) to function correctly. The (EM) waves emerging communication systems and medical must be isolated safeguard humans exposure. mechanics of EMI as well several characterization methods are discussed in this paper. Existing trends practices designing, fabrication use polymer matrix composites for ap...
Biochar and biochar-based composites are multi-functional materials with a wide range of environmental other applications. A new emerging application is in the field modern communication systems as significant electromagnetic shielding effectiveness. In this study, biochar was prepared from olive tree prunings which subsequently used at various dosages to prepare composite samples carbon black ...
PURPOSE The most common material for shielding is concrete, which can be made using various materials of different densities as aggregates. New techniques in radiotherapy, as IMRT and VMAT, require more monitor units and it is important to develop specifically designed shielding materials. METHODS Arraela S.L. has developed new concrete (CONTEK®-RFH2), which is made from an arid with a high p...
As magnetic fields generated by the human brain and heart are extremely weak, a magnetically shielded room (MSR) must be installed to reduce magnetic noises. Especially in the case of biomagnetic measurements such as the MEG (magneto encephalogram) and the MCG (magnetocardiogram), of which the signals always exist in the frequency range less than several ten Hz, the following magnetic noises mu...
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