Nano ZS90 laser scattering analyzer. The pore size distribution of the sintered membrane was calculated using Nano Measurer 1.2.0 software, based on the ESEM image of Fig.1b(surface, scale bar 5 μm). Membrane porosity was calculated using the gravimetric method defined as: porosity (%)...
The main challenge for coronagraphs is controlling starlight, which has a tendency to stray. Just putting a circular mask in front of the star doesn't obstruct the light completely; starlight bends around the mask like ocean waves curving around islands in a process called diffraction. The Rom...
The latter is an essential challenge and disadvantage for the more traditional vibration isolation systems, while using such as natural rubber vibration isolators. To this end, the maximum of the energy flow transmissibility spectral density EFT max , from Equation (25), should be minimized. This ...