Stick-slip phenomenon is often associated with the control of low velocity motion because of the positional dependancy of friction and negative damping friction that decreases as the motion speed increases. In this paper, smooth low velocity tracking control of a commercial robot joint is demonstrated experimentally using a combination of high gain PID control, fast sampling rate and high posit...

Conformal films obtained through polymerization of aminomalononitrile in solution at pH = 8.6 display an irreversible electrochemical oxidation current and a thickness/ morphology dependant antioxidant activity as measured by the quenching 2,2-diphenyl-1-picrylhydrazyl. These findings illustrate that materials issued from molecules suspected to have played important role prebiotic chemical proc...

Time dependant models have been intensively studied for many reasons, among others because of their applications in software verification and due to the development of embedded platforms where reliability and safety depend to a large extent on the time features. Many of the time dependant models were suggested as real-time extensions of several well-known untimed models. The most studied formal...

The present study was carried out to evaluate the cytotoxic effects of aqueous (AE) and ethanolic (EE) extracts of Artemisia herba alba on human laryngeal carcinoma (Hep-2) cell line and murine mammary adenocarcinoma (AMN-3) cell line in vitro. The in vitro cell growth assay showed that there were timeand concentration-dependant cytotoxic effects of both extracts on the tested cell lines. The r...

Environ 10 % des cancers surviennent chez femmes de moins 45 ans. Grâce a l’efficacite approches therapeutiques, les taux survie atteignent plus 90 % dans certaines pathologies malignes. Mais ces traitements peuvent entrainer une insuffisance ovarienne prematuree dependant la reserve ovarienne, de l’âge au moment du diagnostic et molecules utilisees. Des techniques preservation fertilite releva...