Abstract Filter membranes (pore size 0.2 μm) are frequently used to perform a sterile filtration. To characterize the pore of filter membranes, method determine particle retention nanoparticles was defined. The Dynamic Light Scattering first analysed and calibrated correlate concentration with absolute intensity scattered light. Afterwards, standard suspensions sizes 0.150 μm 0.239 were lead th...

Introduction: The human skin is an active medium from the optical point of view. Therefore, the diagnostic and therapeutic techniques employing light are increasing. Current optical techniques are based on the measurement of the intensity of reflected absorbed or backscattered light from or within skin. Studies have shown that biological tissues, and in particular skin, demonstrate polarization...