ScienceDaily: Latest Science News |
- Judging couples’ chemistry influenced by serotonin
- Atlantis found? Film highlights professor’s efforts to locate fabled lost city
- Economical and environmentally-friendly pulp bleaching
- Testosterone linked to men's ability to 'woo' potential mates
- Optical illusions show vision in a new light
- Gene modification: Leaf beetle larvae attacking birch trees produce toxic cocktails that differ from the ones produced by conspecifics living on willows
- New measurement into biological polymer networks
- New method could improve economics of sweetening natural gas
- HIV-infected patients at higher risk for bone fractures
- Potential way to protect neurons in Parkinson's, Alzheimer's, ALS
- Fewer than one-third of children ages 5-15 will wake up to home smoke alarms, study suggests
- Extra iron doesn't help many pregnant women, study suggests
- Researchers recommend new EU standards for machine strength grading of timber
- Smart materials for high-tech products: Hard, viscous or watery at the touch of a button
| Judging couples’ chemistry influenced by serotonin Posted: 12 Mar 2011 11:09 AM PST The judgments we make about the intimacy of other couples' relationships are influenced by the brain chemical serotonin, a new study has found. |
| Atlantis found? Film highlights professor’s efforts to locate fabled lost city Posted: 12 Mar 2011 10:50 AM PST Could the fabled lost city of Atlantis have been located? Using satellite photography, ground-penetrating radar and underwater technology, a team of experts has been surveying marshlands in Spain to look for proof of the ancient city. If the team can match geological formations to Plato's descriptions and date artifacts back to the time of Atlantis, we may be closer to solving one of the world's greatest mysteries. |
| Economical and environmentally-friendly pulp bleaching Posted: 11 Mar 2011 10:18 AM PST A simulation model for pulp bleaching has been created. The model will yield information of phenomena taking place during pulp bleaching, especially about reactions between lignin and bleaching chemicals that cause the pulp's brown color. The chemicals used in pulp bleaching are costly. In addition, water and energy are used in the bleaching process. With the help of the knowledge produced by the new model, pulp can be bleached more economically and in a more environmentally friendly way. |
| Testosterone linked to men's ability to 'woo' potential mates Posted: 11 Mar 2011 09:21 AM PST Theories have long proposed that testosterone influences competition among males trying to attract females. Findings from a recent study give a clearer understanding of the links between testosterone and human mating behavior, and how testosterone is associated with dominance and competitive success when men battle for the attention of an attractive woman. |
| Optical illusions show vision in a new light Posted: 11 Mar 2011 09:21 AM PST Optical illusions have fascinated humans throughout history. Greek builders used an optical illusion to ensure that that their columns appeared straight (they built them with a bulge) and we are all intrigued by the mental flip involved in the case of the young girl/old woman faces. New research demonstrates a more serious use of these illusions in understanding how the brain assesses relative size. |
| Posted: 11 Mar 2011 09:20 AM PST Larvae of the leaf beetle Chrysomela lapponica attack two tree species: willow and birch. To fend off predator attacks, their larvae produce toxic butyric acid esters or salicylaldehyde, whose precursors they ingest with their leafy food. Scientists found that a change in the genome has emerged in beetles specialized on birch: The activity of the salicylaldehyde producing enzyme salicyl alcohol oxidase is missing in these populations, whereas it is present in willow feeders. |
| New measurement into biological polymer networks Posted: 11 Mar 2011 09:20 AM PST The development of a new measurement technology is probing the structure of composite and biological materials. In their quest to understand more about bio-polymers, they developed the rheometer and confocal microscope system (measures the mechanical properties of materials), which provide a unique and unprecedented level of precision and sensitivity for investigating polymeric systems which were previously too small to visualize during mechanical stress experiments. |
| New method could improve economics of sweetening natural gas Posted: 11 Mar 2011 09:20 AM PST Battelle's Antisolvent Swing Regeneration system could make tapping extremely sour gas reserves more economically friendly by drastically reducing the amount of heat needed to remove rotten-egg smelling hydrogen sulfide from natural gas sweetening process. |
| HIV-infected patients at higher risk for bone fractures Posted: 11 Mar 2011 09:20 AM PST Low bone mineral density in HIV-infected patients is common and raises concerns about increased risks of fracture. Although there have been several studies regarding bone mineral density, there have been few data on rates of fracture in this population. A new study examined differences in the rates of bone fractures between HIV-infected patients and the general population and found higher rates of fracture among HIV patients. |
| Potential way to protect neurons in Parkinson's, Alzheimer's, ALS Posted: 11 Mar 2011 09:18 AM PST Neurons lacking a substance called caspase-2 were better able to withstand pesticide-induced damage to energy centers known as mitochondria, scientists have reported. This finding could have implications for development of therapeutics for conditions such as Parkinson's disease. |
| Fewer than one-third of children ages 5-15 will wake up to home smoke alarms, study suggests Posted: 11 Mar 2011 09:18 AM PST An Australian study to determine the likelihood of school-aged children waking up to their home smoke alarm found that 78 percent of children slept through a smoke alarm sounding for 30 seconds. |
| Extra iron doesn't help many pregnant women, study suggests Posted: 11 Mar 2011 09:18 AM PST Although universal prenatal supplementation with iron is recommended, an extra intake of iron does not noticeably benefit pregnant women, except when they are anemic, new research suggests. |
| Researchers recommend new EU standards for machine strength grading of timber Posted: 11 Mar 2011 09:18 AM PST To ensure that wooden constructions are sufficiently stable, timber must first be graded according to its strength. Machines for this already exist, but they are rarely used in Europe as current EU standards stipulate expensive acceptance requirements. That's why timber is usually classified visually -- which is slower and less accurate. German wood technologists have now identified how the obstacles to machine grading can be overcome. This should make timber a more competitive, safer construction material. |
| Smart materials for high-tech products: Hard, viscous or watery at the touch of a button Posted: 11 Mar 2011 09:18 AM PST Flexible and independently operating "smart materials" can adapt to changing conditions with high speed. |
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