Poly(L-lactic acid) (PLLA) - 20% (w/w) and Cu3(BTC)2 metal organic framework (MOF) based mixed matrix membranes (MMMs) were fabricated by a vertical co-rotating twin screw micro-compounder followed by injection molding process. Water vapor, CO2, O2 and selected aroma mass transfer properties of PLLA and PLLA MMMs were evaluated. The CO2/O2 perm-selectivity of PLLA (αCO2/O2) MMMs increased from 7.6 to 10.3 with the incorporation of 20% Cu3(BTC)2 MOF.

Brain energy disorders and oxidative stress due to chronic hypoperfusion are considered to be major risk factors in the pathogenesis of dementia . The aim of our study was to evaluate changes of braincreatine kinase (BB-CK) reaction and mitochondrial respiratory chain function in male Wistar rats exposed to chronic cerebral hypoperfusion. Three-vessel occlusion (3-VO) was accomplished without thoracotomy using a minimally invasive surgical approach for the occlusion of the brachiocephalic trunk and the left common carotid artery (CCA ).

A low bit-rate ZigBee-based sensor network carrying scalable video streams will be considered. A cross-layer priority algorithm that combines the state of the channel and the quality of the video traffic will be suggested to optimize the required quality of service of the video streams. The proposed algorithm prioritizes the transport of the basic frames, and thus minimizes the carried enhancement orphan frames. It also avoids transmitting the enhancement frames related to a dropped basic frame.