ANAS is an international scientific journal edited and published by AENSI Publications, Jordan. ANAS exists to publish results of research in the area of natural and applied sciences. Papers are welcomed from both developed and developing countries describing original investigations of interest to those engaged in scientific research and the practice of natural and applied sciences. The material should not have been previously published elsewhere Review articles on a particularly hot subject may be suggested to the Editor-in-Chief. Book reviews, news of international meetings and activities, letters to the editors and editorial notes will be also published at the editors' discretion.