منابع مشابه
Bushmen of the Kalahari Desert
THE FACTORS affecting and regulating arterial blood pressure are numerous and complex. Although much useful information has been accumulated about the relationship of blood pressure values to age, sex, weight, diet, occupation, emotional states, and heredity, no precise conlclusions can be drawn at present about how these various factors produce high blood pressure. In recent years it has becom...
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Despite legal protection, deliberate killing by local people is one of the major threats to the conservation of lions and other large carnivores in Africa. Addressing this problem poses particular challenges, mainly because it is difficult to uncover illicit behavior. This article examined two groups of Maasai warriors: individuals who have killed African lions (Panthera leo) and those who have...
متن کاملCrowding among hunter-gatherers: the Kung Bushmen.
Highly crowded living conditions exist among the !Kung Bushmen, hunter-gatherers who live on the edges of the Kalahari Desert in Botswana and South-West Africa. The !Kung appear to be crowded by choice, and biological indicators of stress are absent. Data indicate that residential crowding alone does not produce symptoms of pathological stress.
متن کاملIn Like a Lion:
The tornado that struck Milwaukee, WI on March 8, 2000 was the earliest on record. Unlike most tornadoes, this particular tornado was not associated with a supercell or any form of a mesocyclone. The author argues that a lake breeze circulation created a misocyclone in the region, which was elongated vertically by a rapidly deepening convective thunderstorm in the region, producing the tornado.
متن کاملA study of stimulated saliva in Kalahari Bushmen.
M a t e r i a l a n d M e t h o d s T he subjects examined comprised 90 Bushmen, 55 males and 35 females, from the Lone Tree and Kang districts of Bot swana. These districts form part of the Southern K alahari desert. S t im u la te d saliva sp ec im e n s were obtained from the subjects by their chew ing a cube of paraffin wax for three minutes and expectorating into a glass beaker when nece...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1892
ISSN: 0036-8733
DOI: 10.1038/scientificamerican08131892-103