Posted: 04 Feb 2015 03:44 PM PST
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Posted: 04 Feb 2015 03:44 PM PST
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Posted: 04 Feb 2015 11:45 AM PST
Medical researchers have developed a low-cost smartphone accessory that can perform a point-of-care test that simultaneously detects three infectious disease markers -- HIV and syphilis -- from a finger prick of blood in just 15 minutes. The device replicates, for the first time, all mechanical, optical, and electronic functions of a lab-based blood test without requiring any stored energy: all necessary power is drawn from the smartphone.
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Posted: 04 Feb 2015 10:41 AM PST
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Posted: 04 Feb 2015 10:41 AM PST
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Posted: 04 Feb 2015 10:41 AM PST
The early evolutionary history of monkeys in South America is cloaked in mystery. Long thought to have journeyed from Africa, evidence for this hypothesis was difficult to support without fossil data. A new discovery now unveils a key chapter of their evolutionary saga. The discovery of three new extinct monkeys from eastern Peru hints strongly that South American monkeys have an African ancestry.
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Posted: 04 Feb 2015 10:41 AM PST
Plant biologists report that drought tolerance in plants can be improved by engineering them to activate water-conserving processes in response to an agrochemical already in use -- an approach that could be broadly applied to other parts of the same drought-response pathway and a range of other agrochemicals. The finding illustrates the power of synthetic biological approaches for manipulating crops, opening new doors for crop improvement.
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Posted: 04 Feb 2015 10:41 AM PST
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Posted: 04 Feb 2015 04:53 AM PST
A new image taken with ESO's VISTA survey telescope reveals the Trifid Nebula in a new light. By observing in infrared light, astronomers can see right through the central parts of the Milky Way and spot many previously hidden objects. In one of the VISTA surveys, astronomers have discovered very distant Cepheid variable stars. They are the first such stars found that lie in the central plane of the Milky Way beyond its central bulge.
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Posted: 04 Feb 2015 04:52 AM PST
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Posted: 03 Feb 2015 11:23 AM PST
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Posted: 02 Feb 2015 01:07 PM PST
Jogging may be best in small quantities according to a new study. The study, which tracked hours of jogging, frequency, and the individual's perception of pace, found that over the 12-year study strenuous joggers were as likely to die as sedentary non-joggers, while light joggers had the lowest rates of death.
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2015년 2월 5일 목요일
ScienceDaily: Top Science News
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