RESUMO
Changing climatic conditions are thought to be a major control of human presence in Arabia during the Paleolithic. Whilst the Pleistocene archaeological record shows that periods of increased monsoon rainfall attracted human occupation and led to increased population densities, the impact of arid conditions on human populations in Arabia remains largely speculative. Here, we present data from Jebel Faya in Southeast (SE) Arabia, which document four periods of human occupation between c. 210,000 and 120,000 years ago. The Jebel Faya record indicates that human occupation of SE Arabia was more regular and not exclusively linked to major humid periods. Our data show that brief phases of increased rainfall additionally enabled human settlement in the Faya region. These results imply that the mosaic environments in SE Arabia have likely formed a population refugia at the end of the Middle and the beginning of the Late Pleistocene.
RESUMO
It is reported on 2 cases of pancreatitic retinopathy in acute pancreatitis. In the first place of the clinical symptoms there are acutely beginning bilateral vision disturbances 2 to 3 days after the onset of the disease which exist for a long time. Causally an obstruction of the precapillary and capillary parts of the vascular system of the retina, but also of the choriocapillary system by fat particles and corpuscular blood elements is discussed. With certainty still other factors play a part, for example preinjury of the vascular parts mentioned by circulating pancreatic enzymes and toxins. In patients with acute pancreatitis vision disturbances should be taken into consideration, even when these changes are very rare.