In this study, Nano-diode is proposed using an asymmetric structure of two different molecules attached to metal electrodes. The asymmetric molecular structure acts as a molecular diode (MD) in uniformity circuits at the Nano scale. A tight-binding model is adopted to describe MD, and the results are based on the steady-state formula to illustrate charge transfer. Theoretical calculations of the conductivity and current as a function of time, the study of the effect of heat on it, as well as the study of the rectification current ratio as a function of bias voltage, all these calculations were made using two types of molecules of DNA, they are (G/C) and (A/T). The results were encouraging because they gave the common features of the rectification. The analysis may be useful in the fabrication of electronic devices with Nanotechnology.

In this paper, additives dechlorane plus which used synergistically with sodium-orthophosphate and with alumina, sodium-orthophosphate , and alumina have been used as a flame retardants for unsaturated polyester and epoxy resin .The additives were used at low and high levels with unsaturated polyester and they were used at high levels with epoxy resin .At low levels ,the additives were used in weight percentages of (1,3,5,7and 10)%,At high levels ,They were used in weight percentages of (15,20,25,30 and 35)%.Hand-lay up was used to prepare the specimens .The paper showed that the additives have good effectiveness in reducing the burning at high weight percentages and they appeared high effectiveness in resisting the flame when they were used as a synergistic flame retardants.