Δευτέρα 30 Απριλίου 2012

Science News SciGuru.com

Science News SciGuru.com

Link to Science News from SciGuru.com

Phase-sensitive optical data transmission: a new frontier

Posted: 30 Apr 2012 07:40 AM PDT

Fibre-optic cables are becoming the backbone of the Internet, from the main trunk lines between cities, countries and continents to the network of cables running from telephone central offices to individual homes and mobile phone base stations. A pioneering approach to data transmission, supported by EU funding, promises to increase the capacity, range and efficiency of fibre-optic networks.

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Bullied children three times more likely to self harm

Posted: 30 Apr 2012 07:09 AM PDT

New research finds that children who are bullied in childhood are up to three times more likely to self harm up by the age of 12. The study, from researchers at King’s College London’s Institute of Psychiatry (IoP) was published on bmj.com.

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Abnormal Levels of Uric Acid in Teens Linked to High Blood Pressure

Posted: 30 Apr 2012 06:55 AM PDT

Teens with high levels of uric acid appear to be at increased risk for high blood pressure, according to results of research from scientists at the Johns Hopkins Children's Center.

Although the findings do not establish a cause-and-effect link between uric acid and high blood pressure, they point to uric acid as one potential mechanism, or at least a biomarker, of disease, the researchers report in the April issue of the journal Hypertension.

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Scientists Identify Brain Circuitry Associated with Addictive, Depressive Behaviors

Posted: 30 Apr 2012 06:42 AM PDT

Scientists at the UCSF-affiliated Gladstone Institutes have determined how specific circuitry in the brain controls not only body movement, but also motivation and learning, providing new insight into neurodegenerative disorders such as Parkinson’s disease — and psychiatric disorders such as addiction and depression.

Previously, researchers in the laboratory of Gladstone Investigator Anatol Kreitzer, PhD, discovered how an imbalance in the activity of a specific category of brain cells is linked to Parkinson’s.

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24 new species of lizards discovered on Caribbean islands are close to extinction

Posted: 30 Apr 2012 06:19 AM PDT

In a single new scientific publication, 24 new species of lizards known as skinks, all from islands in the Caribbean, have been discovered and scientifically named. According to Blair Hedges, a professor of biology at Penn State University and the leader of the research team, half of the newly added skink species already may be extinct or close to extinction, and all of the others on the Caribbean islands are threatened with extinction.

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Pacific Islands May Become Refuge for Corals in a Warming Climate, Study Finds

Posted: 29 Apr 2012 08:17 PM PDT

Scientists have predicted that ocean temperatures will rise in the equatorial Pacific by the end of the century, wreaking havoc on coral reef ecosystems. But a new study shows that climate change could cause ocean currents to operate in a surprising way and mitigate the warming near a handful of islands right on the equator. As a result these Pacific islands may become isolated refuges for corals and fish.

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