ScienceDaily: Top Technology News |
- Human, artificial intelligence join forces to pinpoint fossil locations
- Faster-than-light neutrinos? New test confirms accuracy of experiment's initial measurement in flight time of neutrinos
- Unearthing a new quantum state of matter: Quantum physics discoveries could change face of technology
- Cassini chronicles life of Saturn's giant storm
- NASA orbiter catches Mars sand dunes in motion
- Lightning sprites are out-of-this-world: 'Sprites' predicted in atmospheres of Jupiter, Saturn and Venus
- First system developed for assessing the odds of life on other worlds
- Laser heating: New light cast on electrons heated to several billion degrees
- Enzymatic synthesis of pyrrolysine, the mysterious 22nd amino acid
| Human, artificial intelligence join forces to pinpoint fossil locations Posted: 21 Nov 2011 12:15 PM PST Traditionally, fossil-hunters often could only make educated guesses as to where fossils lie. The rest lay with chance. But thanks to a new software model, fossil-hunters' reliance on luck when finding fossils may be diminishing. Using artificial neural networks, researchers developed a computer model that can pinpoint productive fossil sites.  |
| Posted: 21 Nov 2011 12:04 PM PST After inviting the particle physics community to scrutinize their surprising neutrino time-of-flight measurements, a collaboration of physicists has rechecked many aspects of its analysis and taken into account valuable suggestions from a wide range of sources. One key test was to repeat the measurement with very short beam pulses from CERN. This allowed the extraction time of the protons, which ultimately lead to the neutrino beam, to be measured more precisely. The beam sent from CERN consisted of pulses three nanoseconds long separated by up to 524 nanoseconds. Some 20 clean neutrino events were measured at the Gran Sasso Laboratory, and precisely associated with the pulse leaving CERN. This test confirms the accuracy of OPERA's timing measurement, ruling out one potential source of systematic error.  |
| Posted: 21 Nov 2011 11:24 AM PST Researchers have made advances in better understanding correlated quantum matter that could change technology as we know it, according to a new study.  |
| Cassini chronicles life of Saturn's giant storm Posted: 21 Nov 2011 10:59 AM PST New images and animated movies from NASA's Cassini spacecraft chronicle the birth and evolution of the colossal storm that ravaged the northern face of Saturn for nearly a year.  |
| NASA orbiter catches Mars sand dunes in motion Posted: 21 Nov 2011 10:56 AM PST Images from NASA's Mars Reconnaissance Orbiter show sand dunes and ripples moving across the surface of Mars at dozens of locations and shifting up to several yards. These observations reveal the planet's sandy surface is more dynamic than previously thought.  |
| Posted: 21 Nov 2011 08:49 AM PST Lightning storms on planets like Jupiter, Saturn, and Mars may also produce "sprites," bursts of electric energy. Scientists have re-created the atmospheres of these planets to produce artificial "sprites," and the research could lead to a new understanding of electrical and chemical processes on these planets.  |
| First system developed for assessing the odds of life on other worlds Posted: 21 Nov 2011 07:41 AM PST A modeling expert has proposed a new system for classifying exoplanets using two different indices -- an Earth Similarity Index for categorizing a planet's more earth-like features and a Planetary Habitability Index for describing a variety of chemical and physical parameters that are theoretically conducive to life in more extreme, less-Earthlike conditions.  |
| Laser heating: New light cast on electrons heated to several billion degrees Posted: 21 Nov 2011 07:40 AM PST A new class of high power lasers can effectively accelerate particles like electrons and ions with very intense, short laser pulses. Physicists have developed a new theoretical model for predicting the density and temperature of hot electrons which surpasses existing models in accurately describing experimental results and simulations.  |
| Enzymatic synthesis of pyrrolysine, the mysterious 22nd amino acid Posted: 18 Nov 2011 10:30 AM PST With few exceptions, all known proteins are built up from only twenty amino acids. 25 years ago scientists discovered a 21st amino acid, selenocysteine and ten years ago a 22nd, the pyrrolysine. However, how the cell produces the unusual building block remained a mystery. Now researchers have elucidated the structure of an important enzyme in the production of pyrrolysine.  |
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