Derna Academy Journalfor Applied Sciences The Derna Academy Journal for Applied Sciences (DAJAS) is a Free scientific periodical Journal. It is peer-reviewed and concerned with publishing scientific production in the field of applied sciences. The DAJAS is published twice a year by the Libyan Academy for Postgraduate Studies, Derna and aims to give researchers and academics the opportunity to publish their scientific production according to scientific controls which subject to scientific research standards and adhere to intellectual property laws.