ScienceDaily Technology Headlines
for Saturday, July 31, 2010
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How not to blow up a molecule (July 30, 2010) -- Can single-shot imaging with femtosecond x-ray pulses from powerful new free electron lasers really work, or will the beam damage the sample too quickly? Pulse length is the key. A new study reveals that "frustrated absorption" explains why ultrashort pulses, even if their peak power is greater, do less damage to molecules than longer pulses. ... > full story
Rocks on Mars may provide link to evidence of living organisms roughly 4 billion years ago (July 30, 2010) -- A new paper reveals groundbreaking research on the hydrothermal formation of Clay-Carbonate rocks in the Nili Fossae region of Mars. The findings may provide a link to evidence of living organisms on Mars, roughly 4 billion years ago in the Noachian period. ... > full story
Brown dwarf found orbiting a young sun-like star (July 30, 2010) -- Astronomers have imaged a very young brown dwarf, or failed star, in a tight orbit around a young nearby sun-like star. The discovery is expected to shed light on the early stages of solar system formation. ... > full story
Fluorescent biosensor to aid in drug development (July 30, 2010) -- Scientists have developed a new fluorescent biosensor that could aid in the development of an important class of drugs that target a crucial class of proteins called G protein-coupled receptors (GPCRs). GPCRs are popular drug targets because of the pivotal role they play in cells' communication circuits responsible for regulating functions critical to health, including circuits involved in heart and lung function, mood, cognition and memory, digestion and the inflammatory response. ... > full story
Best hope for saving Arctic sea ice is cutting soot emissions, say researchers (July 30, 2010) -- Soot from the burning of fossil fuels and solid biofuels contributes far more to global warming than has been thought, according to a new study. But, unlike carbon dioxide, soot lingers only a few weeks in the atmosphere, so cutting emissions could have a significant and rapid impact on the climate. Controlling it may be the only option for saving the Arctic sea ice before it all melts. ... > full story
Graphene exhibits bizarre new behavior well suited to electronic devices (July 30, 2010) -- Graphene, a sheet of pure carbon, has been touted as a possible replacement for silicon-based semiconductors because of its useful electronic properties. Now, physicists have shown that graphene has another unique and amazing property that could make it even more suitable for future electronic devices. When contorted in a specific way it sprouts nanobubbles in which electrons behave as if they are moving in a strong magnetic field. ... > full story
Polarstern expedition: Autonomous underwater vehicle dives under the Arctic ice (July 30, 2010) -- The Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association for the first time sent its Autonomous Underwater Vehicle (AUV) on an under-ice mission at about 79° North. The four-metre-long, torpedo shaped underwater vehicle was deployed from the research icebreaker Polarstern under heavy pack ice. The vehicle was subsequently recovered by helicopter. ... > full story
Laboratory in microdrops: Credit card-size microflow system handles thousands of experiments (July 29, 2010) -- Tens of thousands of chemical and biochemical experiments may be conducted daily with the use of a microflow system of the size of a credit card, developed by scientists in Poland. The device has already been tested in research on the effectiveness of antibiotic mixtures. ... > full story
Sensing wind speed with kites (July 29, 2010) -- Researchers have developed a way to use a kite itself to measure wind speed. The instrument consists of a 2-meter-long and 1-meter-wide Rokkaku-type kite. ... > full story
Brilliant star in a colorful neighborhood (July 29, 2010) -- A spectacular new image shows the brilliant and unusual star WR 22 and its colorful surroundings. WR 22 is a very hot and bright star that is shedding its atmosphere into space at a rate many millions of times faster than the Sun. It lies in the outer part of the dramatic Carina Nebula from which it formed. ... > full story
Quantum fractals at the border of magnetism (July 29, 2010) -- Physicists are reporting new results from experiments on the perplexing class of materials that includes high-temperature superconductors. The team reports the unexpected discovery of a simple fractal form of electronic excitations in ultra-low-temperature quantum magnets at the border of magnetism. ... > full story
Planets found in unusually intimate dance around dying star (July 29, 2010) -- Astronomers have found two extrasolar planetary systems with gas giant planets locked in an orbital embrace. In one system -- a planetary pair orbiting the massive, dying star HD 200964, located roughly 223 light-years from Earth -- the intimate dance is closer and tighter than any previously seen. ... > full story
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