Self-ligating braces offer shorter orthodontic treatment, more comfortable follow-up and less chair time. Passive are preferred in self-ligating systems as they cause friction. Damon system is also one of the most popular passive braces. In addition to protrusion incisors, it important advantages this bracket that provides expansion dental arches. The purpose these case reports present treatmen...

It became a global agenda to develop clean alternative fuels which were domestically available, environmentally acceptable and technically feasible. Thus, biodiesel was destined to make a substantial contribution to the future energy demands of the domestic and industrial economies. Utilization of the non edible vegetable oils as raw materials for biodiesel production had been handled frequentl...

In the present work supercritical fluid extraction (SFE) using CO2, was applied for the pre-treatment of mandarin peels. Two-step extraction, combining SFE and conventional extraction, was investigated. During the first extraction step supercritical CO2 at temperatures 25, 40 and 60°C and pressures from 100 to 300 bar was applied to remove the non-polar components from the extracting material. ...