منابع مشابه
The Human Genetic History of the Americas: The Final Frontier
The Americas, the last continents to be entered by modern humans, were colonized during the late Pleistocene via a land bridge across what is now the Bering strait. However, the timing and nature of the initial colonization events remain contentious. The Asian origin of the earliest Americans has been amply established by numerous classical marker studies of the mid-twentieth century. More rece...
متن کاملWest Nile virus in the Americas.
West Nile virus causes sporadic disease in the Eastern hemisphere that is often asymptomatic or mild, whereas in the Western hemisphere, West Nile virus has been associated with illness and profound mortality in many avian species. West Nile virus might have been transported to North America by an infected mosquito or the virus could have entered within a vertebrate host like a bird. Although t...
متن کاملField Surgery on the North-West Frontier
Notwithstanding the numerous expeditions against the warlike tribes on the north-west and north-east frontiers of British India within recent years, there is a remarkable dearth, in medical literature, of information regarding the nature of tho diseases from which the troops suffered during thoso expeditions, and of the wounds inflicted upon them by the enemy. To meet this want in some small me...
متن کاملEight Americas: A New Definition for “Americas”?
Sam Singer In their essay in October’s PLoS Medicine, Daniel Reidpath and Kit Yee Chan challenge the widely cited link between HIV-related stigma and the spread of the epidemic [1]. This is an important question, given the heavy emphasis on stigma in policies of the World Health Organization, the Joint United Programme on HIV/AIDS, and other public health institutions, but in making their argum...
متن کاملEstablishing Birdsfoot Trefoil in the Mountain West
Birdsfoot trefoil (Lotus corniculatus) is an underutilized forage legume in the Mountain West. It has several unique characteristics that make it worth considering, particularly for pasture. One of the key reasons to use birdsfoot trefoil is that it does not cause bloat when grazed as green, standing forage, even in pure stands. This is due to the presence of condensed tannins which bind with s...
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ژورنال
عنوان ژورنال: Southern Economic Journal
سال: 1951
ISSN: 0038-4038
DOI: 10.2307/1053910