ScienceDaily: Most Popular News |
- Solar-cell efficiency improved with new polymer devices
- An anomaly in satellites' flybys confounds scientists
- Shrink-wrapping spacesuits: Spacesuits of the future may resemble a streamlined second skin
- Single dose of antidepressant changes the brain
- There could be increased numbers of psychopaths in senior managerial positions, high levels of business, research shows
| Solar-cell efficiency improved with new polymer devices Posted: 19 Sep 2014 11:28 AM PDT New light has been shed on solar power generation using devices made with polymers. Researchers identified a new polymer -- a type of large molecule that forms plastics and other familiar materials -- which improved the efficiency of solar cells. The group also determined the method by which the polymer improved the cells' efficiency. The polymer allowed electrical charges to move more easily throughout the cell, boosting the production of electricity -- a mechanism never before demonstrated in such devices. |
| An anomaly in satellites' flybys confounds scientists Posted: 19 Sep 2014 08:05 AM PDT When space probes, such as Rosetta and Cassini, fly over certain planets and moons, in order to gain momentum and travel long distances, their speed changes slightly for an unknown reason. A researcher has now analyzed whether or not a hypothetical gravitomagnetic field could have an influence. However, other factors such as solar radiation, tides, or even relativistic effects or dark matter could be behind this mystery. |
| Shrink-wrapping spacesuits: Spacesuits of the future may resemble a streamlined second skin Posted: 19 Sep 2014 06:48 AM PDT For future astronauts, the process of suiting up may go something like this: Instead of climbing into a conventional, bulky, gas-pressurized suit, an astronaut may don a lightweight, stretchy garment, lined with tiny, musclelike coils. She would then plug in to a spacecraft's power supply, triggering the coils to contract and essentially shrink-wrap the garment around her body. |
| Single dose of antidepressant changes the brain Posted: 18 Sep 2014 09:14 AM PDT A single dose of antidepressant is enough to produce dramatic changes in the functional architecture of the human brain. Brain scans taken of people before and after an acute dose of a commonly prescribed serotonin reuptake inhibitor reveal changes in connectivity within three hours, say researchers. |
| Posted: 08 Sep 2014 09:07 AM PDT For the first time, it has been demonstrated that people with psychopathic tendencies who have high IQs can mask their symptoms by manipulating tests designed to reveal their personalities. It raises the possibility that large numbers of ruthless risk-takers are able to conceal their level of psychopathy as they rise to key managerial posts. |
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