Volume 5 – Issue 3 ID Title PageNo 1 Lie Symmetry Analysis and the Optimal System of Nonlinear Fourth Order Evolution Equation Kevin. O. Wambura, M. E. Oduor Okoya, T. J. O. Aminer 1-6 2 The Dependence of Defect Percentage and Length on the Impedance of Magnetic Permeability for Eddy Current Marwa Nouraldaiem Hussien, Rawia AbdElgani, Ali Sulaiman Mohamed, Mubarak Dirar Abdallah, Amel Alfaki, Sawsan Ahmed Elhouri Ahmed 7-13 3 Depositional Environments, Diagenetic Processes and Hydrocarbon Potential of the Fractured Reservoir, Issaran Field, Western Shore of the Gulf of Suez, Egypt. Ali Younis, Othman, A.A., Mohamed Abd El-Aal, Emad A., Abd El Aziz 14-74 4 Investigation on the performance of different cement brands commonly used in Libya Magdi H. Almabrok, Naser F. Bin Khashin 75-79 5 The Effect of Changing Concentrations of Al2O3 On The (ZnO)X(Al2O3)1-X Thin Films Absorption And Energy Gap Zohal E. M. Ebnouf, 2Mahmoud.H.M .Hilo, Mubarak Dirar Abdallah, Ahmed H.Alfaki, 5Abdalsakhi S M.H, Sawsan Ahmed Elhouri Ahmed 80-86 6 A Review of Mathematical Optimization in Energy Sector Mobin Ahmad 87-96 7 Sensory Acceptability of Cucurbita Maxima Jam in Nueva ECIJA University of Science and Technology, San Isidro Campus Jomell M. Santiago 97-101 8 Leadership Styles And Management Practices Of School Principals In Selected Private Schools In The Fourth District Of Nueva Ecija Angelo R. Santos 102-104