The University of New South Wales ARC Photovoltaic Centre of Excellence says they have set a new standard by creating the first silicon solar cell to achieve 25 percent effiency, surpassing their previous record of 24.7 percent.
Enjoying your HD TV? Nitrogen trifluoride is one of several gases used during the manufacture of liquid crystal flat-panel displays, thin-film photovoltaic cells and microcircuits. Many industries have used the gas in recent years as an alternative to perfluorocarbons, which are also potent greenhouse gases, because it was believed that no more than 2 percent of the NF3 used in these processes escaped into the atmosphere.
Oops. Turns out it is at least four times more prevalent in the atmosphere than previously estimated, according to a team of researchers at Scripps Institution of Oceanography at UC San Diego.
University of Cincinnati scientists say that a recent scientific study of a now-closed uranium processing plant near Cincinnati has identified a second, potentially more significant source of radon exposure for former workers. That source—six silos filled with uranium ore in the production area—resulted in relatively high levels of radon exposure to 12 percent of the workers. More than half (56 percent) of the workers were exposed to low levels of radon while working at the site.
A powerful antioxidant in green tea may prevent or delay the onset of type 1 diabetes, Medical College of Georgia researchers say.
Researchers were testing EGCG, green tea's predominant antioxidant, in a laboratory mouse with type 1 diabetes and primary Sjogren's syndrome, which damages moisture-producing glands, causing dry mouth and eyes.
Amoebas glide toward their prey with the help of a protein switch that controls a molecular compass, biologists at the University of California, San Diego have discovered. Their finding is important because the same molecular switch is shared by humans and other vertebrates to help immune cells locate the sites of infections.
From pacemakers constructed of materials that so closely mimic human tissues that a patient's body can't discern the difference to devices that bypass injured spinal cords to restore movement to paralyzed limbs, the possibilities presented by organic electronics read like something from a science fiction novel.