منابع مشابه
'hovering' Flight of Wilson's Storm Petrel
Wilson's storm petrel (Oceanites oceanicus) characteristically feeds by ' hovering' over the water surface, but its technique for this is unlike that of other flying vertebrates. The kinematics and aerodynamics of this ' hovering' flight were investigated to determine the possible sources of lift; various nonaerodynamic sources of lift were discounted. It is suggested that the storm petrel soar...
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This report describes the development and refinement of a burrowscope that is reliable and robust enough to withstand arduous field conditions crucial for obtaining accurate data on sooty shearwater (Puffinus griseus) burrow occupancy and breeding success. The burrowscope consists of a miniature camera and infra-red lights mounted on a three metre length of hose through which images are project...
متن کاملMalignant melanoma in Jamaica.
A 4f-month-old female infant had a melanoma arising in the mucosa overlying the maxilla. Melanoma in infancy is a clinical curiosity. Transplacental transfer of melanoma from mother to foetus has been reviewed by Skov-Jensen, Hastrup & Lambrethsen (1966). There is no evidence that such was the case here. This lesion in situ, the resected specimen and a photomicrograph of the lesion are shown in...
متن کاملHuman Angiostrongylus cantonensis, Jamaica
The life cycle of M. laryngeus is not completely known, but it is assumed to be similar to S. trachea, which penetrates the intestinal wall and migrates through the body of the animal to the tracheolaryngeal region (8). Eggs produced are deposited in the tracheal mucosa, swallowed, and pass in the feces. Chronic cough and fever are the major symptoms associated with M. laryngeus in humans, with...
متن کاملRheumatic disease in Jamaica.
The relative prevalence and clinical pattern of the major rheumatic diseases in the patient population of a teaching hospital in Jamaica were studied over the 3-year period 1974--7. The prevalence of systemic lupus erythematosus approached that of rheumatoid arthritis (RA). All grades of severity of RA were seen, and there was an unusually high proportion of females with RA. Rheumatic fever and...
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ژورنال
عنوان ژورنال: Nature
سال: 1882
ISSN: 0028-0836,1476-4687
DOI: 10.1038/026177a0