Abstract:
First and far most I would like to thank god for giving me health, courage
and strength to complete this research. Also I wish to express my gratitude
and appreciation to my Supervisor Dr.Abdelmutalab Ibrahim Abdelrasul
Adam for his continued support, professional advice and guidance given
throughout my research work. I would likealso to extend my thanks to the
management of AIN SUDAN Company and QA, QC staff for their massive
support during data collection and cooperation throughout this program. I
would like also to thanks Dr. Ashraf for his Valuable help during the
analysis of data. My Special appreciation and thanks go to Mrs.Eldaw
Omer Mohammed for his support, Suggestions and encouragement. My
great gratitude and thankfulness for my parents for their continuous support
andmotivation.
