The crossing of the Empty Quarter, the largest continuous peninsula of sand, first happened unbeknownst to the world when Bertram, who was finance minister to Sultan Taimur al Said in 1925, and Sheikh Saleh set off quietly from Salalah, as they were sure they would not be granted permission in the winter of 1930.
Definition. Hematemesis is the vomiting of blood, which may be obviously red or have an appearance similar to coffee grounds. Melena is the passage of black, tarry stools. Hematochezia is the passage of fresh blood per anus, usually in or with stools. Hematemesis is the vomiting of blood, which may be obviously red or have an appearance similar to coffee grounds.
melanin (melÂ´Énin), n the dark amorphous pigment of melanotic tumors, skin, oral mucosa, hair, choroid coat of the eye, and substantia nigra of the brain. a dark, sulfur-containing pigment normally found in the hair, skin, ciliary body, choroid of the eye, pigment layer of the retina, and certain nerve cells.