The wind and solar energy are omnipresent, freely available, and environmental friendly. The wind energy systems may not be technically viable at all sites because of low wind speeds and being more unpredictable than solar energy. The combined utilization of these renewable energy sources are therefore becoming increasingly attractive and are being widely used as alternative of oil-produced ene...

Aromatic polyimides constitute a group of special polymers with excellent thermal and mechanical properties. However, they are insoluble infusible due to strong intermolecular interactions. For this reason, approaches sought that would lead an improvement these properties open the possibility extend use polyimides. The interest protect environment leads also searching for alternative, namely, r...

The use of renewable energy sources is one of the most relevant goals to be achieved in order to match the climate protection targets. As a case study, the paper shows the current electrical energy production by sources in the Sicilian context. Among the renewable energy sources, the paper investigates the wave energy potential along the Sicilian coasts, because of the favorable climate around ...

As an efficient alternative to fossil fuels, renewable energy sources have attained great attention due to their sustainable, cost-effective, and environmentally friendly characteristic. However, as a deficiency, renewable energy sources have low reliability because of their non-deterministic and stochastic generation pattern. The use of hybrid renewable generation systems along with the storag...

Renewable energy can become a key factor for sustainable next generation cellular networks. This work explores the possibility to feed base stations of a Heterogeneous Network with renewable energy sources, and analyzes implications of such choice with respect to a classical grid powered solution. Cost and CO2 emission savings are evaluated for different scenarios, showing that properly powerin...