Sabtu, 21 Mei 2011

ScienceDaily Top Science Headlines -- for Saturday, May 21, 2011

ScienceDaily Top Science Headlines

for Saturday, May 21, 2011

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Radio telescopes capture best-ever snapshot of black hole jets (May 20, 2011) -- An international team, using radio telescopes located throughout the Southern Hemisphere, has produced the most detailed image of particle jets erupting from a supermassive black hole in a nearby galaxy. ... > full story

Gene variation linked to infertility in women, study finds (May 20, 2011) -- A variation in a gene involved in regulating cholesterol in the bloodstream also appears to affect progesterone production in women, making it a likely culprit in a substantial number of cases of their infertility, a new study suggests. ... > full story

Dietary supplement can protect against pre-eclampsia, new study suggests (May 20, 2011) -- A dietary supplement containing an amino acid and antioxidant vitamins, given to pregnant women at high risk of pre-eclampsia, can reduce the occurrence of the disease, finds a new study. ... > full story

Work with RNA silencing and plant stem cells may lead to controlling fruit, seed and leaves (May 20, 2011) -- Research on controlling the stem cells of plants could eventually lead to learning how to make them produce more fruit, seed and leaves, according to researchers. ... > full story

Buying 'legal highs' from the Internet is risky business (May 20, 2011) -- Many drugs sold as "legal highs" on the Internet do not contain the ingredients they claim. Some instead contain controlled substances and are illegal to sell over the internet. These are findings of a doctor, who bought a range of tablets from different websites to see what each contained. ... > full story

Researchers create nanopatch for the heart (May 20, 2011) -- Engineers have a promising new approach to treating heart-attack victims. The researchers created a nanopatch with carbon nanofibers and a polymer. In laboratory tests, natural heart-tissue cell density on the nanoscaffold was six times greater than the control sample, while neuron density had doubled. ... > full story

High iron, copper levels block brain-cell DNA repair (May 20, 2011) -- Excessive levels of copper and iron in the brain and DNA damage by reactive oxygen species are associated with most cases of Alzheimer's, Parkinson's and other neurodegenerative disorders. Researchers have discovered how these two pieces of the neurodegenerative disease puzzle fit together. ... > full story

Long reach of the deep sea: Oceanographers document effect of equatorial deep currents on West African rainfall (May 20, 2011) -- Our climate is affected by the ocean in many ways. The most prominent example is the El Niño phenomenon in the Pacific, a well-documented interannual climate signal. Oceanographers from Germany and the United States have recently documented the effect of deep equatorial currents in the Atlantic on rainfall and climate over West Africa. ... > full story

Wolbachia bacteria reduce parasite levels and kill the mosquito that spreads malaria (May 20, 2011) -- Researchers found that artificial infection with different Wolbachia bacteria strains can significantly reduce levels of the human malaria parasite, Plasmodium falciparum, in the mosquito, Anopheles gambiae. The investigators also determined that one of the Wolbachia strains rapidly killed the mosquito after it fed on blood. According to the researchers, Wolbachia could potentially be used as part of a strategy to control malaria if stable infections can be established in Anopheles. ... > full story

Laser modules in matchbox size (May 20, 2011) -- Miniaturized laser beam sources which are suitable for a variety of applications, from material processing to display technology have recently been developed. ... > full story

Breaking rules makes you seem powerful (May 20, 2011) -- When people have power, they act the part. Powerful people smile less, interrupt others and speak in a louder voice. When people do not respect the basic rules of social behavior, they lead others to believe that they have power, according to a new study. ... > full story

Record efficiency of 18.7 percent for flexible solar cells on plastics, Swiss researchers report (May 20, 2011) -- Swiss scientists have further boosted the energy conversion efficiency of flexible solar cells made of copper indium gallium (di)selenide (also known as CIGS) to a new world record of 18.7 percent -- a significant improvement over the previous record of 17.6 percent achieved by the same team in June 2010. The measurements have been independently certified. ... > full story


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