Bücher von Mahmoud Ali

The plants of the sand dunes of the Egyptian deserts are of much ecological interest. These plants (Psammophytes), when growing in the path of air currents, usually form mounds of accumulated wind ¿ borne material around them but they may be overwhelmed by extensive deposition of sand. They are however, often saved by their ability to produce adventitious roots on stems that are covered by sand, the new shoots replace the buried ones. By this ability, the plant growth keeps ahead of the influx of sand, these plants are good sand collectors and binders, producing phytogenic mounds, hillocks, or dunes. The growth forms and diversity of plant species are correlated with the stages of sand formations e.g: pioneer communities of the foredune have low cover and diversity, being dominated by herbs, young dunes have low cover but with moderate diversity with rhizomatous grasses and shrublets predominate and old dunes have greater total mean cover, with abundant growth of shrubs.

Laparoscopic splenectomy is feasible, effective, and safe with low morbidity rates and has rapidly become the surgical approach of choice for patients that require elective splenectomy in the treatment of hematologic disorders. Stapling devices have been established as a mainstay in laparoscopic splenectomy. The study was conducted in Fayoum University Hospitals from November 2014 till July 2016 and it included twenty patients in whom splenectomy was indicated. All patients were subjected to laparoscopic splenectomy with sealing of the pedicle using LigaSure and harmonic scalpel. The patients were presented by different indications for splenectomy. Stapleless and sutureless laparoscopic splenectomy for splenomegaly is safe and effective, and it is associated with low conversion rates in selected patients. This technique reduces operating time in laparoscopic splenectomy and removes the disadvantage of a longer operating period in laparoscopic splenectomy over the open splenectomy with acceptable complication and conversion rates The technique may be considered an alternative when it is difficult or inadequate to use mechanical stapling devices to transect the splenic hilum.