منابع مشابه
Plate Tectonics: A Paradigm Under Threat
This paper looks at the challenges confronting plate tectonics— the ruling paradigm in the earth sciences. The classical model of thin lithospheric plates moving over a global asthenosphere is shown to be implausible. Evidence is presented that appears to contradict continental drift, seafloor spreading, and subduction, as well as the claim that the oceanic crust is relatively young. The proble...
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This study determines the effectiveness of a new low-unit-cost support system in patients at very high risk of developing pressure sores. In a prospective randomised controlled trial, a low-pressure inflatable mattress and cushion system (Repose) was compared to a dynamic support mattress (Nimbus II) used in conjunction with an alternating-pressure cushion (Alpha TranCell) in 80 patients with f...
متن کاملUnder pressure
The movement of water by osmosis causes pressure differences that drive the transport of sugars over long distances in plants.
متن کاملUnder pressure.
Abstract A variety of public campaigns, including the “Just Say No” campaign of the 1980s and 1990s that encouraged teenagers to “Just Say No to Drugs”, are based on the premise that teenagers are very susceptible to peer influences. Despite this, very little is known about the effect of school peers on the long-run outcomes of teenagers. This is primarily due to two factors: the absence of inf...
متن کاملCentral aortic blood pressure and cardiovascular risk: a paradigm shift?
The provocative proposition of “hypertension is a myth” has generated many a debate and editorial commentary.1,2 In contrast, the realities of high blood pressure and the associated cardiovascular risks have been ascertained from data obtained by the conventional brachial cuff sphygmomanometer. Notwithstanding the inherent limitations of the technique, there is yet no equivalent and suitable de...
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ژورنال
عنوان ژورنال: Index on Censorship
سال: 1999
ISSN: 0306-4220,1746-6067
DOI: 10.1080/03064229908536588