Performance evaluation of wind turbines for sites in Chad.

For the production of electricity, the use of wind energy has become more interesting in recent years. In this present study, the authors assessed wind potential using wind speed data measured at 10 m altitude for a period of 18-30 years in Chad. The statistical method of Rayleigh's law was deployed in this study.

Chaotic vibration of microtubules and biological information processing.

A new nonlinear phenomenon has been studied theoretically on one of the main cytoskeletal element of eukaryotic cells, namely chaos in microtubules vibrations. The general model of microtubules is used to draw phase portraits and Lyapunov spectra. The examination of numerical results reveals that the velocity of the chaotic wave could be the physical parameter that governs chaos.