in the first part of this thesis we explored wetting and its dynamics for small droplets. first, we showed how a simple feature of water droplets on a surface, i.e. laplace pressure, can be exploited to build a micropump. we investigated capillary pumping in microchannels both experimentally and numerically. putting two droplets of different sizes at the in/outlet of a microchannel, will ge...

Introduction: Different approaches had identified different explanations about the causes mental diseases incidence. The biological and psychological approaches believe that it is a physiological stressful conditions or childhood experiences. Whereas, the sociological schools believe that the main factor of these diseases are unequal social structures, social roles, absence of social suppo...

                            Aim and Background:   Bleeding during functional endoscopic sinus surgery(FESS)remains a challenge for both surgeons and anesthesiologists despite several modalities available for improving the surgical field. This study was conducted to evaluate the effect of oral clonidine premedication on blood loss and the quality of...