Polytechnic Journal (ISSN print: 2313-5727 ) is published by Erbil Polytechnic University/Department of Scientific Publications. Responsibility for the contents rests upon the authors and not upon Erbil Polytechnic University or the Journal Editorial and Advisory Boards.
Department of Scientific Publication Office:Presidency of Erbil Polytechnic University, Kirkuk Road, Erbil, Kurdistan, Iraq. email: [email protected]www.epu.edu.krd,
Copyright and Reprint Permission: It is the policy of PTJ to own the copyright to the technical contributions it publishes and to facilitate the appropriate reuse of this material by others. Photocopying is permitted with credit to the source for individuals for individual use.