Robust video data security using hybrid cryptography-steganography technique

The interest in the digital videos confidentiality in the current electronic and interrelated world has increased. Thus, this paper aimed at making a video steganography scheme for an acceptable security with high speed of calculation by embedding data (video frames) in other video frames. The techniques of embedding and encrypting video frames in a cover video file were done through two ways. Firstly, two keys and XOR bit operation were employed to create a large range of different keys for encryption. Secondly, a modified method of Least Significant Bit (LSB) technique was used for hiding high resolution video frames (bitmap color) in selective cover video frames, offering two security layers. The procedures of encrypting and hiding video data were successfully tested on many secret videos such ad Eye Video, Secret Medicine Video and Traffic Video. All experiments were conducted using MATLAB-GUI software, representing an efficient and easy tool for video management supported by powerful testing tools as histograms and mathematics for video quality. Experimental result demonstrated a good performance with low correlation and very high PSNR of the Stego video frames

Comparative Study for the Levels of Trace Elements in Water from Southern Part of Iraq during 1996 – 2010

          A comparative study for the levels of trace elements in water from southern part of IRAQ for the period of time 1996 to 2010 was carried out to investigate the quality of waters. The study is based on the chemical analysis of trace elements: Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn. For subsurface water samples covered 12 stations along Al-Izz , Tigress, Euphrates, Shatt Al-Arab, Khor Al-Zubair, Shatt Al-Basrah and Main Outlet Drainage (MOD) rivers. Spectrophotometry was adopted for this analysis. The results showed that levels of trace elements were between those for dissolved phase and particular matter of water in region which normally analyzed by atomic spectrometer. Trace elements concentrations reported by this study were higher than allowed levels by WHO and IRPR without any classification of the phase studied. Fluctuation of elements concentrations in the area attributed to metal input as well as geochemical and hydrological characteristics of the water

Comparative Study for the Levels of Trace Elements in Water from Southern Part of Iraq during 1996

          A comparative study for the levels of trace elements in water from southern part of IRAQ for the period of time 1996 to 2010 was carried out to investigate the quality of waters. The study is based on the chemical analysis of trace elements: Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn. For subsurface water samples covered 12 stations along Al-Izz , Tigress, Euphrates, Shatt Al-Arab, Khor Al-Zubair, Shatt Al-Basrah and Main Outlet Drainage (MOD) rivers. Spectrophotometry was adopted for this analysis. The results showed that levels of trace elements were between those for dissolved phase and particular matter of water in region which normally analyzed by atomic spectrometer. Trace elements concentrations reported by this study were higher than allowed levels by WHO and IRPR without any classification of the phase studied. Fluctuation of elements concentrations in the area attributed to metal input as well as geochemical and hydrological characteristics of the water

Some Numerical Methods For Solving Fractional Parabolic Partial Differential Equations

The aim of this paper isto approximate the solution offractionalparabolicpartial differential equations using two numerical methods which areBellman's method (make use of Lagrange interpolation formula) and the methodof lines. Fractional Parabolic partial differential equations are transformed to asystem of first order ordinary differential equations that are solved using a Runge-Kutta method. An illustrative example using thesemethodsare also presented andcompared with the exact solution

Structural and Optical Properties of SnO2 Thin Films for Conductive Glass (12 x12cm) 2 by Thermal Spray Method

Tin dioxide (SnO2) thin film is one of the important transparent conducting dioxides (TCOs) .due to its electrical and optical transparency in visible light , it is applied in various fields such as  solar cells, optoelectronic devices, heat mirrors, gas sensors. SnO2 thin film layer was grown up on a (12 x12cm2) glass sheet by thermal spray method and a study  of  the structural, optical, morphological and electrical  properties is introduced.