Over the last three decades, there has been a resurgence of interest in large-scale production of fermentation chemicals due to the sharp increase in petroleum cost. So the potential role of a new energy efficient fermentation technology is receiving growing attention. Propionic acid is widely used in the food, pharmaceutical and chemical industries. Fermentation technology for the production o...

Semiconductor photocatalysis is a new sustainable development technology that has demonstrated remarkable potential in the fields of energy-production and environmental-protection. However, single photocatalyst usually does not possess both strong redox fast charge-separation properties, greatly limiting efficiency. Heterojunction photocatalysts can perfectly solve this problem by providing mul...

Article history: Available online 15 May 2012

This paper presents and discusses the application of blind source separation to astrophysical data obtained with the WMAP satellite.

In this paper, we investigate the importance of the high frequencies in the problem of convolutive blind source separation (BSS) of speech signals. In particular, we focus on frequency domain blind source separation (FD-BSS), and show that when separation is performed in the low frequency bins only, the recovered signals are similar in quality to those extracted when all frequencies are taken i...

Graphene and its analogues offer a broad range of application opportunities for (opto)-electronics, sensing, catalysis, phase separation, energy conversion storage, etc. Engineering graphene properties often relies on controllable functionalization, defect formation patterning, reactive gas etching. In this chapter, we survey the dynamics using classical quantum-classical methods. We discuss re...

traditional systems for olefin/paraffin separation, like low-temperature distillation, are expensive and very energy consuming, and therefore, alternative separation methods are desired. facilitated transport membranes are new tools for this separation to be substituted in large scale separation of olefin-paraffin mixtures. to design a membrane process for olefin-paraffin separation, equilibriu...