منابع مشابه
Stone circles: form and soil kinematics.
Distinct surface patterns are ubiquitous and diverse in soils of polar and alpine regions, where the ground temperature oscillates about 0 degrees C. They constitute some of the most striking examples of clearly visible, abiotic self-organization in nature. This paper outlines the interplay of frost-related physical processes that produce these patterns spontaneously and presents unique data do...
متن کاملTrachoma in The Gambia.
BACKGROUND As part of the second National Survey of Blindness and Low Vision in the Gambia carried out in 1996, all survey participants were examined for signs of trachoma. The findings were compared with the results of the first survey in 1986, which used the same sampling strategy. METHODS A multistage stratified cluster random sample, with proportional probability sampling, was obtained. S...
متن کاملThe Gambia
A griculture is the dominant sector in the Gambian economy, employing about 70% of the total work force and contributing, on average, 33% of GDP. It produces about 50% of the national food supplies with only about 60% of the country’s total arable land resources currently being utilized. The sector generates approximately 40% foreign exchange earnings and provides two-thirds of total household ...
متن کاملNeonatal Malaria in the Gambia
BACKGROUND Neonatal malaria was thought to be uncommon, even in malaria endemic areas. Neonates with febrile illness and / or related symptoms are often presumed to have neonatal septicaemia and examination of blood films for malaria parasites is rarely included in the initial work-up of these babies. OBJECTIVE To determine the existence, or otherwise, and the clinical features of malaria in ...
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ژورنال
عنوان ژورنال: Man
سال: 1911
ISSN: 0025-1496
DOI: 10.2307/2839371