The term subarachnoid hemorrhage (SAH) refers to extravasation of blood into the subarachnoid space between the pial and arachnoid membranes. SAH constitutes half of all spontaneous atraumatic intracranial hemorrhages; the other half consists of bleeding that occurs within the brain parenchyma.
Definitions and images to illustrate geological terms, links to images and website articles. Assimilation is that process of magmatic differentiation whereby ascending magmas evolve chemically by recruiting easily melted or dissolved components (fusibles) from the walls of their conduits. Under the agency of heat and magmatic fluids, ascending magmas pick up volatiles, silica, trace elements, and occassionally fragments of wall rock.
Definition of Assimilation. Assimilation is a gradual process by which a person or group belonging to one culture adopts the practices of another, thereby becoming a member of that culture. Sociologists commonly distinguish between forced and unforced assimilation. In forced assimilation, a person or group is compelled to take on the practices of another culture, such as by adopting that culture's language and religious traditions. In unforced assimilation, a person takes on the practices of another culture but is not forcibly compelled to do so.