the gas separation performance of commercial ceramic titania and hybrid silica (hybsi®) membranes was assessed using the gas permeation and permporometry methods. results indicated that the hybsi® membranes have a hybrid surface containing regions covered by a polymeric matrix and others with inorganic pores. these membranes have high h2 selectivity, which increases significantly with temperatu...

Rare-earth metals, such as La(III), Nd(III), Eu(III), or Y(III), which are recycled from electronic waste in urban mining, can be separated and purified utilizing reactive extraction. Process development equipment design then aim to determine the optimal extractant, diluent, any additional components, type, structure of internals, well all process parameters. This requires a deep understanding ...

reactive oxygen species (ros)plays an important role in sperm motility. the physiological generation at low concentration induces beneficial effects on sperm functions and plays a significant role in sperm metabolism. meanwhile, the excessive generation of reactive oxygen species can overwhelm protective mechanism and triggers changes in lipid and protein layers of sperm plasma membrane, which ...

Figure 3. High performance capillary SDS-PAGE separation of myoglobin and several of its fragments. Conditions: 400 V/cm, 34 AA, 25 'C, migration distance 20 cm; fused-silica capillaries; 75 Am ID, T-12.5%, c=3.3%. Buffer: 0.1 M Tris-HPO0 (pH=6.9), 0.1% SDS, 8 M urea. Supercritical fluid chromatography (SEC) is fast becoming the method of choice for many separations involving nonvolatile, react...

The construction of reactive systems often requires the combination of different individual functionalities, thus leading to a complex overall behavior. To achieve an efficient construction of reliable systems, a structured approach to the definition of the behavior is needed. Here, functional modularization supports a separation of the overall functionality into individual functions as well as...