A subarachnoid hemorrhage (SAH) represents a bleeding into the subarachnoid space - the area between the arachnoid membrane and the pia mater surrounding the brain. This may occur spontaneously, usually from a ruptured cerebral aneurysm.

Biphenyls and polynculear aromtic hydrocarbons (PAHs) have been reported in the literature to found naturally at several places in the environment. American Chemical Society reported a novel palladium. catalyzed ullmann- type reductive coupling of aryl-halides, under an air atmosphere and in equeous acetone to obtain different type of biphenyl derivatives.

The top-heaviness of the Indian judiciary is striking, both in terms of the relative power of the upper judiciary and the number of cases these courts hear in relation to the subordinate. The origins of this top-heaviness are partly historical.