Studies of the structure of atoms and ions (ultracold to relativistic included) as well as their twobody interactions with photons, electrons and other particles require accurate methods for the description of such objects. In order to obtain accurate values of atomic quantities it is necessary to account for relativistic and correlation effects. Relativistic effects may be taken into account a...

t his paper discusses firstly the logical possibility of seeing god and secondly discusses the occurrence of that in this world. the reasons for and against the possibility and also the occurrence of this seeing are studied in details and criticized. the author finally proposed his arguments for rejecting the possibility and occurrence of seeing god.

Being sustainable and producing little waste products, the renewable energy knows a rapid deployment. Unfortunately, the intermittent characteristic of these energies makes them difficult to control. The influence of this aleatory character can be reduced with the coupling of two or more sources of renewable energy and secondly with a sound management of storage systems. This new configuration ...