ScienceDaily: Top Technology News |
- Novel device removes heavy metals from water
- Meteorite shockwaves trigger dust avalanches on Mars
- Protecting confidential data with math
- The onset of electrical resistance
- Detecting the 'heartbeat' of smallest black hole candidate
| Novel device removes heavy metals from water Posted: 16 Dec 2011 12:03 PM PST Engineers have developed a system that cleanly and efficiently removes trace heavy metals from water. In experiments, the researchers showed the system reduced cadmium, copper, and nickel concentrations, returning contaminated water to near or below federally acceptable standards. The technique is scalable and has viable commercial applications, especially in the environmental remediation and metal recovery fields.  |
| Meteorite shockwaves trigger dust avalanches on Mars Posted: 16 Dec 2011 08:50 AM PST Dust avalanches around impact craters on Mars appear to be the result of the shock wave preceding the actual impact, according to a new study. Small impacts might therefore be more important in shaping the Martian surface than previously thought.  |
| Protecting confidential data with math Posted: 16 Dec 2011 08:29 AM PST With the computerization of databases in healthcare, forensics, telecommunications, and other fields, ensuring security for such databases has become increasingly important. Researchers have now analyzed a new security-control model for statistical databases.  |
| The onset of electrical resistance Posted: 16 Dec 2011 05:42 AM PST Researchers have observed the extremely fast onset of electrical resistance in a semiconductor by following electron motions in real-time.  |
| Detecting the 'heartbeat' of smallest black hole candidate Posted: 15 Dec 2011 08:27 PM PST Astronomers have identified a candidate for the smallest-known black hole using data from NASA's Rossi X-ray Timing Explorer (RXTE). The evidence comes from a specific type of X-ray pattern, nicknamed a "heartbeat" because of its resemblance to an electrocardiogram. The pattern until now has been recorded in only one other black hole system.  |
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