Altitudes of Auroræ
نویسندگان
چکیده
منابع مشابه
Genes for High Altitudes
C R E D IT : IS T O C K P H O T O .C O M D uring the past 100,000 to 200,000 years, anatomically modern humans successfully colonized a diverse range of environments across the planet. Some of the most extreme of these environments are found on the high-altitude plateaus of Central Asia and the Andes. The Tibetan Plateau appears to have been inhabited for ~25,000 years, and permanent settlement...
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It has been clearly recognized that a low barometric pressure, when first encountered, may interfere with the normal workings of the human machine, but that later by compensatory responses the body may become adapted to the new conditions. The outstanding variable encountered in ascents to high altitudes by airplane, dirigible, free balloon, or mountaineering is the tenuousness of the atmospher...
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Sir,?Major P. Savage, i.m.s., in the June number of your journal lias recorded the apparent occurrence of indigenous kala-azar at Sanawar in the Simla Hills, where up to that time the presence of Phlcbotomus argcntipcs, the suspected carrier of kala-azar, had not been reported. It is, therefore, of interest to note that in a collection of Phlcbotomus from Sanawar village, kindly given me by Cap...
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It is a strange coincidence that the highest point on Earth is very close to the limit of human tolerance to hypoxia. The physiological changes that allow humans to reach these extreme altitudes involve enormous alterations of their normal state. It is useful to contrast this response with two others to high altitude. One is acclimatization that allows lowlanders to ascend to altitudes of up to...
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Corresponding Author: Johan Jendle, M.D., Ph.D., Endocrine and Diabetes Center, Karlstad Hospital, SE-65185 Karlstad, Sweden; email address [email protected] Airplane flight results in exposure to hypobaric conditions. At cruising altitude, usually 10,000 to 13,000 meters (~30,000 to 42,000 feet), the pressure in the cabin is 0.75 atm, which is 75% of the pressure measured at sea level. The d...
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ژورنال
عنوان ژورنال: Nature
سال: 1916
ISSN: 0028-0836,1476-4687
DOI: 10.1038/097005b0