WEST LAFAYETTE, Ind. - Lowering temperatures for two hours each day reduces the height of corn without affecting its seed yield, a Purdue study shows, a technique that could be used to grow crops in controlled-environment facilities in caves and former mines.
Raising the crops in isolated and enclosed environments would help prevent genetically modified pollen and seed from escaping into the ecosystem and crossing with wild plants.
An Italian astronomer in the 19th century first described them as 'canali' – on Mars' equatorial region, a conspicuous net-like system of deep gorges known as the Noctis Labyrinthus is clearly visible. The gorge system, in turn, leads into another massive canyon, the Valles Marineris, which is 4,000 km long, 200 km wide and 7 km deep. Both of these together would span the US completely from east to west.
Plasma technology based on Dielectric Barrier Discharge (DBD) has been widely demonstrated to be a novel active flow control method. In order to make the plasma flow control technology more practical, the plasma authority must be improved at high wind speed. Dr. ZHANG Xin and his group from School of Aeronautic, Northwestern Polytechnical University set out to tackle this problem. After 2-years of innovative research, they have developed a novel plasma actuator to improve the plasma authority at high wind speed.
Although Dark Energy and Dark Matter appear to constitute over 95 percent of the universe, nobody knows of which particles they are made up. Astrophysicists now crossed one potential Dark Matter candidate – the Dark Photon or U boson – off the list in top position. This is the result of recent HADES experiments, where researchers from the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) and from 17 other European institutes try to pin down the nature of Dark Matter.
AUSTIN, Texas – A new method of measuring the interaction of surface water and groundwater along the length of the Mississippi River network adds fresh evidence that the network's natural ability to chemically filter out nitrates is being overwhelmed.
While most of Antarctica is remaining cold, rapid increases in summer ice melt, glacier retreat and ice shelf collapses are being observed in Antarctic Peninsula, where the stronger winds passing through Drake Passage are making the climate warm exceptionally quickly.
Until this study, published in Nature Climate Change, Antarctic climate observations were available only from the middle of last century.
The TRMM data was overlaid on an infrared image from NOAA's GOES-East satellite that showed the extent of the clouds at the same time. TRMM's PR instrument found rain falling at a rate of over almost 163 mm (about 6.4 inches) per hour in an intense line of storms extending from Arkansas into Texas.
TRMM noticed that some of the highest thunderstorms topped out at around 11 km (6.8 miles) high. Some of these powerful storms were returning reflectivity values of over 55dBZ to the satellite.
A team of scientists has found that the woody growth of forests in north Borneo is half as great again as in the most productive forests of north-west Amazonia, an average difference of 3.2 tons of wood per hectare per year.
The new study, published today in the Journal of Ecology, examined differences in above-ground wood production (one component of the total uptake of carbon by plants) which is critically important in the global cycling of carbon.
Ozone pollution across the continental United States will become far more difficult to keep in check as temperatures rise, according to new research results.
The study shows that Americans face the risk of a 70 percent increase in unhealthy summertime ozone levels by 2050.
The results appear online this week in a paper in the Journal of Geophysical Research-Atmospheres, published by the American Geophysical Union.
The work was funded by the National Science Foundation (NSF) and the U.S. Department of Energy.
Magnetic devices like hard drives, magnetic random access memories (MRAMs), molecular magnets, and quantum computers depend on the manipulation of magnetic properties. In an atom, magnetism arises from the spin and orbital momentum of its electrons. 'Magnetic anisotropy' describes how an atom's magnetic properties depend on the orientation of the electrons' orbits relative to the structure of a material. It also provides directionality and stability to magnetization.
Women who received collaborative care for depression at an obstetrics and gynecology clinic showed fewer symptoms after treatment than women receiving usual depression care in the same setting, recent University of Washington research found.
Alexandria, Va. – Since hydraulic fracturing operations began in the Marcellus Shale region, debate has raged over whether drilling operations are causing high levels of methane in drinking-water wells.
But few systematic scientific studies have been published to date, so it's unknown if high methane levels are natural or the result of contamination from nearby gas wells. Now, a new study is adding some much-needed baseline data for methane levels in groundwater in New York. The results suggest that at least in some cases methane occurs at naturally high levels in groundwater.
During two days of intensive airborne measurements, oil and gas operations in Colorado's Front Range leaked nearly three times as much methane, a greenhouse gas, as predicted based on inventory estimates, and seven times as much benzene, a regulated air toxic. Emissions of other chemicals that contribute to summertime ozone pollution were about twice as high as estimates, according to the new paper, accepted for publication in the American Geophysical Union's Journal of Geophysical Research: Atmospheres.