Abstract Determination of the in-situ engineering properties of subsurface ground materials has always been a challenge for geotechnical engineers. Several in –situ test methods have been developed. Dynamic cone penetration test (DCPT) is one of the in-situ penetration tests which have been widely used to determine the geotechnical parameters of soil. The dynamic cone penetration test (DCPT) is a quick and easy to set up and run onsite. Due to the economy and simplicity of the test, better understanding of correlations between its results and the geotechnical parameters of soil can reduce significantly the efforts and cost to evaluate the engineering properties of ground materials. In this research, a light weight simple DCP device was used for evaluation of some engineering properties of Tripoli sand. The device consisted of an 8kg hammer that drops over a height of 575 mm and drives a 60o cone tip with 20 mm base diameter into the ground. The intention of this investigation is to obtain sufficient data to establish appropriate and reliable correlations among soil parameters and DCPT results. In order to investigate the effect of fine material content on the correlations between the geotechnical parameters and the penetration index (PI) of the DCPT of Tripoli sand, soil samples of different fine material content have been prepared and tested. This research presents the results of the laboratory tests as well as the analysis and discussion of these results. Based on the analysis of test results, the relationships between the DCPT results (penetration index, PI) and the geotechnical parameters of Tripoli sand such as relative density and CBR value are obtained. In this study penetration index of the dynamic cone penetration test from the laboratory prepared samples were correlated with laboratory CBR,s for a number of different soil types. Unique models were found for each type of soil with good coefficient of determination (R2). The combined data gave also a correlation between CBR and penetration index PI which compare very well with those obtained from other studies. There is no clear correlation between the penetration index and both the dry density (gr/cm3) and relative density, with wide scatter and a low coefficient of determination (R2) value.
نورالدين سالم الكثاري (2011)

Abstract An atomic bomb or any normal bomb may be exploded in the air or at or near the surface of the earth. The medium in which the bomb is burst determines to a large extent the relative magnitudes of the various damaging effects. The detonation of an atomic weapon releases a largeamount of energy in a fraction of a second. During this time the bombcomponents are volatilized into a sphere of hot compressed gas at a temperature of millions of degrees and a pressure of the order of hundredsof thousands of atmospheres. This phenomenon is characterized by an instantaneous and very rapid rise to a maximum pressure followed by a decline to sub-atmospheric pressure and then a gradual return to normal pressure. In this thesis the definitions and types of explosives and explosions are studied, effects of the different types of explosions are explained, transition of atomic air blast pressure from center of explosion to buildings are presented, determination of atomic air blast loading on buildings is studied as well.
أحمد عبدالرحيم سليمان (2008)

Abstract In this thesis, the formulation of curved mixed finite strip element for cylindrical shells was developed utilizing the cubic –B3 spline function .Which is referred to in this thesis as a mixed finite strip method.The curved shell element is divided into a number of longitudinal curved strips and each strip element has two nodal line with four knot amended splines in addition to the existing of interference between the first and last ends amended splines in the whole three elementals .At each nodal line and each knot six degree of freedom in the form of three displacement components and three Moments or stress couples .These formulations are applied through selected two types of cylindrical shell roofs , which are circular cylindrical roofs and north light roofs.A software is developed to validate results and it can be used to handle one of boundary condition (simple- simple). The results obtained from the numerical formulation were compared with the analytical solution, where the accuracy and the convergence results were studied for different problems.
وداد إمحمد الصالحي (2010)