منابع مشابه
Origins of modern humans still look recent
Disotell reviews some recent reports that bear on the geographic locations of human ancestors during the transition to modern human form [1]. One side of the debate is the “recent replacement” model, which was described as one in which our ancestors lived within a single population in Africa prior to their spread outside of Africa “...beginning around 200,000 years ago.” Surprisingly, Disotell ...
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D espite atrial fibrillation (AF) being the most common cardiac arrhythmia, its asymptomatic (and sometimes, paroxysmal) nature makes subsequent detection and diagnosis challenging. Ischemic stroke as a result of AF is usually more severe and results in greater functional loss, and patients with undetected AF will undoubtedly by at greater risk of recurrent stroke. The failure to diagnose AF af...
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That modern humans have a relatively ancient origin has been suggested on the basis of fossil and genetic evidence. But DNA sequences from an extinct neanderthal, and phylogenetic analyses of hundreds of human and ape sequences, continue to support a recent origin for modern humans.
متن کاملWhat Directions Do We Look at Power from? Up-Down, Left-Right, and Front-Back
Three experiments were carried out to investigate whether the the kinship concept had spatial representations along up-down (Experiment 1), left-right (Experiment 2), and front-back (Experiment 3) orientation. Participants identified the letter P or Q after judging whether kinship words were elder or junior terms. The results showed that participants responded faster to letters placed at the to...
متن کاملSocial Movement Mobilization under Right and Left Governments: A Look at Four West European Countries
This paper analyzes the impact of changing political opportunities, and more particularly of changes in the composition of government, on the levels, political leaning and forms of protest mobilization. The literature provides us with contradictory expectations as to these questions, some stressing openess of the political system, some closure, and some a combination of openness and closure as ...
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ژورنال
عنوان ژورنال: Studies in the Maternal
سال: 2011
ISSN: 1759-0434
DOI: 10.16995/sim.175