نتایج جستجو برای: shielded
تعداد نتایج: 2924 فیلتر نتایج به سال:
We report the results of experimental and numerical-simulation studies of shielded radiography using narrowband MeVenergy X-rays from a compact all-laser-driven inverse-Compton-scattering X-ray light source. This recently developed Xray light source is based on a laser-wakefield accelerator with ultra-high-field gradient (GeV/cm). We demonstrate experimentally high-quality radiographic imaging ...
The TM0 surface mode in an infinitely long parallel-plate waveguide filled with a double-positive (DPS) and epsilon-negative (ENG) metamaterial bi-layer is studied. With proper constitutive parameters and thicknesses of the two layers, the slow-wave factor (SWF) for such a parallel-plate waveguide can tend to infinity as the frequency decreases. A 2-D cavity based on the DPS-ENG bilayer wavegui...
The 2500WH MEG system by 4D Neuroimaging has magnetometer detectors that rely on real-time noise reduction in addition to shielding of a magnetically shielded room. Theoretically, the set of reference magnetometers and gradiometers, distant from the recording array, are sufficient to remove environmental noise through first order spatial variation within the shielded room. However, in magnetica...
Most of the existing active suspension studies assume that an ideal force actuator exists and will carry out the commanded force accurately. In reality, due to the interaction between the hydraulic actuator and suspension system, the lightly damped modes of the plant will generate lightly damped zeros (LDZ) for the servo-loop system, which confines the closed-loop performance to a low frequency...
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