الفهرس 
acknowledgmentOnly 14 pages are availabe for public view
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Abstract
The Author would like to express his appreciation & gratitude to his thesis adviser Dr. HERBERT S. FONG for his suggestions in bringing this research to completion.
Special thanks
go to Mr. SAID H. GHACHEM of UOP Management Services for his technical guidance & valuable discussions; to Professor Dr. MOHGA SALAH of Alexandria University for her inestimable help in reviewing & criticizing the text; to Mr. OSAMA WAHBA for his great assistance in the field of computer applications; and to the R & D Staff of Alexandria Petroleum Company and Jeddah 011 Refinery Company.
Grateful acknowledgments are expressed to Mrs. AMANI ABDUL-SALAM; and Mr. GHULAM ABBAS for their loyal help to complete this work in its final form & style.
Great thanks are due to my wife & my daughter for their support to accomplish the whole work and also to my parents & my sister Dr. SALWA for their encouragements.