ScienceDaily: Top Technology News |
- Venus Transit: June 5-6 2012
- Skeleton key: Diverse complex networks have similar skeletons
- Integrated sensors handle extreme conditions
- New device warns workers of high levels of airborne metals in minutes rather than weeks
- New type of biosensor is fast, super-sensitive
- Mars missions may learn from meteorite from Australia
| Posted: 01 Jun 2012 08:17 PM PDT On June 5, 2012, at 6:03 PM EDT, the planet Venus will do something it has done only seven times since the invention of the telescope: cross in front of the sun. This transit is among the rarest of planetary alignments and it has an odd cycle. Two such Venus transits always occur within eight years of each other and then there is a break of either 105 or 121 years before it happens again.  |
| Skeleton key: Diverse complex networks have similar skeletons Posted: 01 Jun 2012 08:15 PM PDT Researchers have discovered that very different complex networks -- ranging from global air traffic to neural networks -- share very similar backbones. By stripping each network down to its essential nodes and links, they found each network possesses a skeleton and these skeletons share common features, much like vertebrates do. The findings could be particularly useful in understanding how something -- a disease, a rumor or information -- spreads across a network.  |
| Integrated sensors handle extreme conditions Posted: 01 Jun 2012 07:38 AM PDT Engineers have designed and fabricated integrated amplifier circuits that operate under extreme temperatures -- up to 600 degrees Celsius. The silicon carbide amplifiers have applications in both aerospace and energy industries.  |
| New device warns workers of high levels of airborne metals in minutes rather than weeks Posted: 31 May 2012 08:25 AM PDT Scientists are reporting development of a new paper-based device that can warn workers that they are being exposed to potentially unhealthy levels of airborne metals almost immediately, instead of the weeks required with current technology. The device costs about one cent to make and could prevent illness in the millions of people who work with metal.  |
| New type of biosensor is fast, super-sensitive Posted: 31 May 2012 07:22 AM PDT A whole new class of biosensor that can detect exceptionally small traces of contaminants in liquids in just 40 minutes has now been developed. Known as a biochemiresistor, it meets a long-standing challenge to create a sensor that is not only super-sensitive to the presence of chemical compounds but responds quickly. It has countless potential uses for detecting drugs, toxins and pesticides for biomedical or environmental analysis.  |
| Mars missions may learn from meteorite from Australia Posted: 30 May 2012 12:22 PM PDT A discovery about the make-up of the atmosphere of Mars could help inform future missions searching for life there.  |
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