The Cochrane Risk of Bias Tool for Non-Randomized Studies of Interventions shows potential value in systematic reviews in an assessment published this week in PLOS Medicine.
Heavens
San Antonio -- April 5, 2016 -- In addition to its history-making encounter with Pluto last July, the New Horizons spacecraft also recorded significant changes in how the solar wind behaves far from the Sun.
Analysts at the Energy Department's National Renewable Energy Laboratory (NREL) have used detailed light detection and ranging (LiDAR) data for 128 cities nationwide, along with improved data analysis methods and simulation tools, to update its estimate of total U.S. technical potential for rooftop photovoltaic (PV) systems. The analysis reveals a technical potential of 1,118 gigawatts (GW) of capacity and 1,432 terawatt-hours (TWh) of annual energy generation, equivalent to 39 percent of the nation's electricity sales.
Summary: New results from NANOGrav - the North American Nanohertz Observatory for Gravitational Waves - establish astrophysically significant limits in the search for low-frequency gravitational waves. This result provides insight into how often galaxies merge, and how those merging galaxies evolve over time. To obtain this result, scientists required an exquisitely precise, nine-year pulsar-monitoring campaign conducted by two of the most sensitive radio telescopes on Earth, the Green Bank Telescope in West Virginia and the Arecibo Observatory in Puerto Rico.
NASA's Aqua satellite passed over Tropical Cyclone 18P soon after it formed west of Vanuatu in the Southern Pacific Ocean and captured a visible image of the storm.
On April 5 at 02:40 UTC (April 4 at 10:40 p.m. EDT), the Moderate Resolution Imaging Spectroradiometer or MODIS instrument aboard NASA's Aqua satellite captured a visible image of the newborn Tropical Cyclone 18P in the Southern Pacific Ocean west of Vanuatu. Strong thunderstorms circled the center of the tropical storm, and a wide, thick band of thunderstorms wrapped into the center from the south.
The bombardment of Mars some 4 billion years ago by comets and asteroids as large as West Virginia likely enhanced climate conditions enough to make the planet more conducive to life, at least for a time, says a new University of Colorado Boulder study.
El Nino years can have a big impact on the littlest plants in the ocean, and NASA scientists are studying the relationship between the two.
In El Nino years, huge masses of warm water - equivalent to about half of the volume of the Mediterranean Sea - slosh east across the Pacific Ocean towards South America. While this warm water changes storm systems in the atmosphere, it also has an impact below the ocean's surface. These impacts, which researchers can visualize with satellite data, can ripple up the food chain to fisheries and the livelihoods of fishermen.
The salt levels of oceans on distant Earth-like planets could have a major effect on their climates - according to new research from the Centre for Ocean and Atmospheric Sciences at the University of East Anglia.
A study published today reveals that the circulation in extremely salty or fresh water extra-terrestrial seas would influence their temperatures - and could in fact make for more habitable conditions for alien life.
Where do your eyes focus during a conversation? An innovative study by University of Vermont researchers reveals that for children with autism spectrum disorder, the answer depends on how emotional the conversation is.
Conventional wisdom in strategy holds that companies need to choose between cost-cutting or revenue growth. Pursuing both strategies at the same time can result in incoherence -- or getting stuck in the middle, some argue.
That conventional wisdom, however, is challenged by a new study from the Robert H. Smith School of Business, at the University of Maryland, which suggests that information technology investments can enable firms to pursue dual-focus or ambidextrous IT strategies successfully. In other words, you can walk and chew gum at the same time.
New research has identified how liquid-like materials can change into a solid-like state without the addition of extra particles or changes in volume.
Liquid-like materials with particles in, known as dense suspensions, are found in the food industry (for example molten chocolate) and clay deposits on the bottom of oceans or rivers.
Last February a team of astronomers reported detecting an afterglow from a mysterious event called a fast radio burst, which would pinpoint the precise position of the burst's origin, a longstanding goal in studies of these mysterious events. These findings were quickly called into question by follow-up observations. New research by Harvard astronomers Peter Williams and Edo Berger shows that the radio emission believed to be an afterglow actually originated from a distant galaxy's core and was unassociated with the fast radio burst.
Boston, MA-- A combined vaccine therapy including live Salmonella is a safe and effective way to prevent diabetes in mice and may point to future human therapies, a new study finds. The results will be on Sunday, April 3, at ENDO 2016, the annual meeting of the Endocrine Society, in Boston.
Boston, MA--As skin tans, it darkens to protect itself against harmful ultraviolet (UV) radiation, but the increasing pigment blocks vitamin D synthesis, limiting the skin's ability to produce more vitamin D, a new study from Brazil finds. The results will be presented in a poster Saturday, April 2, at ENDO 2016, the annual meeting of the Endocrine Society, in Boston.
Even people exposed to high levels of sunlight may be deficient in serum vitamin D because it is mainly induced by UV irradiation and synthesized in the skin.
The Global Precipitation Measurement, or GPM, mission core satellite, a joint mission between NASA and the Japan Aerospace Exploration Agency, measured heavy rainfall in severe storms early on Friday, April 1, in the southern U.S.