We present a simple, analytic and straightforward method to elucidate the effects produced by polytropic fluids on any other gravitational source, no matter its nature, for static spherically symmetric spacetimes. As direct application, we study interaction between polytropes perfect coexisting inside self-gravitating stellar object

In this paper, we provide a real options model framing prosumers’ investment in photovoltaic plants. This is presented Smart Grid context where the exchange of energy among prosumers possible. We determine optimal size installations based on influence self-consumption profiles prosumers. calibrate using figures relative to Northern Italy market and investigate decision allowing for different pr...

QM/MM studies were performed to explore the energetics of exchange reactions of glutathione disulfide (GSSG) and the active site of thioredoxin [Cys32-Gly33-Pro34-Cys35] with and without zinc(II), in vacuum and solvated models. The activation energy for exchange, in the absence of zinc, is 29.7 kcal mol(-1) for the solvated model. This is 3.3 kcal mol(-1) higher than the activation energy for e...