Bethesda, MD—As strange as it sounds, a new research study published in the FASEB Journal, suggests that the "healthy" ingredient in red wine, resveratrol, may prevent the negative effects that spaceflight and sedentary lifestyles have on people. The report describes experiments in rats that simulated the weightlessness of spaceflight, during which the group fed resveratrol did not develop insulin resistance or a loss of bone mineral density, as did those who were not fed resveratrol.
Heavens
(Santa Barbara, Calif.) –– "Zombie" stars that explode like bombs as they die, only to revive by sucking matter out of other stars. According to an astrophysicist at UC Santa Barbara, this isn't the plot for the latest 3D blockbuster movie. Instead, it's something that happens every day in the universe –– something that can be used to measure dark energy.
This special category of stars, known as Type Ia supernovae, help to probe the mystery of dark energy, which scientists believe is related to the expansion of the universe.
CAMBRIDGE, Mass. -- For 50 years, the transistors on computer chips have been getting smaller, and for 50 years, manufacturers have used the same technique — photolithography — to make their chips. But the very wavelength of visible light limits the size of the transistors that photolithography can produce. If chipmakers are to keep shrinking chip features, they'll probably need to turn to other manufacturing methods.
ESA's Integral gamma-ray observatory has provided results that will dramatically affect the search for physics beyond Einstein. It has shown that any underlying quantum 'graininess' of space must be at much smaller scales than previously predicted.
Einstein's General Theory of Relativity describes the properties of gravity and assumes that space is a smooth, continuous fabric. Yet quantum theory suggests that space should be grainy at the smallest scales, like sand on a beach.
"The only way to measure radio waves is to send spacecraft to those planets," Karkoschka said. "When Voyager 1 and 2 flew past Saturn, they found radio signals and clocked them at exactly 10.66 hours, and they found radio signals for Uranus and Neptune as well. So based on those radio signals, we thought we knew the rotation periods of those planets."
Outpatient electronic prescribing systems don't cut out the common mistakes made in manual systems, suggests research published online in the Journal of the American Medical Informatics Association (JAMIA).
And not all systems are the same: some perform worse than others, the study shows.
The rapid adoption of electronic prescribing systems has in part been fuelled by the belief that they would reduce the sorts of errors commonly made in manual prescribing systems, the authors say.
In December 2010, a pair of mismatched stars in the southern constellation Crux whisked past each other at a distance closer than Venus orbits the sun. The system possesses a so-far unique blend of a hot and massive star with a compact fast-spinning pulsar. The pair's closest encounters occur every 3.4 years and each is marked by a sharp increase in gamma rays, the most extreme form of light.
"This quasar is a vital probe of the early Universe. It is a very rare object that will help us to understand how supermassive black holes grew a few hundred million years after the Big Bang," says Stephen Warren, the study's team leader.
A scientist at The University of Nottingham is part of a team of astronomers which has discovered the most distant quasar to date — a development that could help further our understanding of a universe still in its infancy following the Big Bang.This brilliant and rare beacon, powered by a black hole with a mass two billion times that of the Sun, is by far the brightest object yet found from a time when the Universe was less than 800 million years old — just a fraction of its current age.
Interruptions are frequent in football: Football players (m/f) spend on average 38 percent of the total game time not chasing the ball. This was established by sports scientists from the Chair of Training Science and Sports Informatics at TUM in a study of 56 football games. In some games, the interruptions took up as much as 53% of the time, thus exceeding the duration of the actual sports activity.
Have you ever seen a low pressure area develop into a full-fledged tropical storm? The GOES-13 satellite has and now you can see it in a new animation released today from NASA and NOAA.
System 95L strengthened and became the Atlantic Ocean hurricane season's first tropical storm, named Arlene. It happened at 8 p.m. EDT on June 27 in the southwestern Gulf of Mexico, and the GOES-13 satellite caught the storm coming together.
NASA's Genesis mission crash-landed back on Earth in 2004. The spacecraft spent more than two years in orbit around the sun collecting solar wind, which consists of charged particles, on various ultra-pure collector materials.
The first of two ARTEMIS ("Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon's Interaction with the Sun") spacecraft is now in its lunar orbit.
On June 22, ARTEMIS P1 began firing its thrusters to move out of its kidney-shaped "libration" orbit on one side of the moon, where it has been since January. Three successive maneuvers were used to kick the spacecraft out of its orbit and send it on a trajectory toward the moon.
MADISON, WI, JUNE 28, 2011 -- The evaluation of both nutrient and non-nutrient resource interactions provides information needed to sustainably manage agroforestry systems. Improved diagnosis of appropriate nutrient usage will help increase yields and also reduce financial and environmental costs. To achieve this, a management support system that allows for site-specific evaluation of nutrient-production imbalances is needed.
A cellulose powder has been used increasingly for many years against allergic rhinitis. Still, there has been a shortage of scientific evidence for its efficacy in seasonal allergic rhinitis (hay fever), particularly in children. Now, however, scientists from the Sahlgrenska Academy and the Department of Plant and Environmental Sciences at the University of Gothenburg have proven that the cellulose powder reduces symptoms of seasonal allergic rhinitis in children, without any adverse effects.