http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Panasonic today announced the development of a Gallium Nitride (GaN) -based monolithic inverter integrated circuit (IC) for motor drive. The integrated six GaN-based transistors can be independently driven in a single chip, which enables successful motor drive with high efficiency. The new GaN inverter IC is applicable to motor drive in a variety of consumer electronics. http://www.physorg.com/news179516515.html Technology Tue, 08 Dec 2009 18:00:05 EST news179516515 Rising levels of carbon dioxide may overheat the planet and cause other environmental problems, but fears that rising CO2 levels could directly reduce plant biodiversity can be allayed, according to a new study by a University of Minnesota scientist Peter Reich. In fact, rising CO2 may actually help counteract losses of diversity from another environmental villain: the global rain of nitrogen from fertilizers and exhaust fumes. http://www.physorg.com/news179074615.html Space & Earth Thu, 03 Dec 2009 15:30:03 EST news179074615 (PhysOrg.com) -- Purdue University researchers are making progress in developing a new type of transistor that uses a finlike structure instead of the conventional flat design, possibly enabling engineers to create faster and more compact circuits and computer chips. http://www.physorg.com/news177088957.html Technology Tue, 10 Nov 2009 15:24:39 EST news177088957 The impact of airborne nitrogen released from the burning of fossil fuels and wide-spread use of fertilizers in agriculture is much greater that previously recognized and even extends to remote alpine lakes, according to a study published Nov. 6 in the journal Science. http://www.physorg.com/news176655560.html Space & Earth Thu, 05 Nov 2009 16:00:01 EST news176655560 (PhysOrg.com) -- Diverting sediment-rich water from the Mississippi River below New Orleans could generate new land in the river's delta in the next century. http://www.physorg.com/news175276001.html Space & Earth Tue, 20 Oct 2009 17:10:01 EST news175276001 In the quest for smaller, faster computer chips, researchers are increasingly turning to quantum mechanics -- the exotic physics of the small. The problem: the manufacturing techniques required to make quantum devices have been equally exotic. That is, until now. http://www.physorg.com/news174833014.html Physics Thu, 15 Oct 2009 13:44:35 EST news174833014 Researchers are developing technologies that use lasers to create arterial stents and longer-lasting medical implants that could be manufactured 10 times faster and also less expensively than is now possible. http://www.physorg.com/news172230934.html Technology Tue, 15 Sep 2009 10:56:49 EST news172230934 Advances by the Rice University lab of James Tour have brought graphite's potential as a mass data storage medium a step closer to reality and created the potential for reprogrammable gate arrays that could bring about a revolution in integrated circuit logic design. http://www.physorg.com/news171742062.html Nanotechnology Wed, 09 Sep 2009 19:08:29 EST news171742062 Fast and affordable genome sequencing has moved a step closer with a new solid-state nanopore sensor being developed by researchers at the University of Illinois. http://www.physorg.com/news163160102.html Nanotechnology Tue, 02 Jun 2009 11:15:32 EST news163160102 (PhysOrg.com) -- Researchers at the University of Illinois have found a new way to make transistors smaller and faster. The technique uses self-assembled, self-aligned, and defect-free nanowire channels made of gallium arsenide. http://www.physorg.com/news159453806.html Nanotechnology Mon, 20 Apr 2009 13:43:49 EST news159453806 A new hard coating with antibacterial properties that has been tested by researchers at the UCL Eastman Dental Institute has been shown to kill 99.9% of Escherichia coli bacteria when a white hospital light was shone on its surface to activate it. http://www.physorg.com/news157732910.html Biology Tue, 31 Mar 2009 15:42:18 EST news157732910 (PhysOrg.com) -- Dust blown off the continents and deposited in the open ocean is an important source of nutrients for marine phytoplankton, the tiny algae that are the foundation of the ocean food web. But new findings show that some sources of dust also carry toxic elements that can kill marine phytoplankton. http://www.physorg.com/news155842133.html Space & Earth Mon, 09 Mar 2009 18:31:39 EST news155842133 (PhysOrg.com) -- "What you want these days is to have precise control of nanostructures. Using masks and optical techniques, it is possible to control how nanostructures grow for use in practical applications," David Field tells PhysOrg.com. "This is already done in silicon devices. However, with softer materials it is a bit more difficult. Our work could make it possible for a new method of patterning that would work with a number of materials." http://www.physorg.com/news155208596.html Physics Mon, 02 Mar 2009 09:30:48 EST news155208596 (PhysOrg.com) -- Scientists and engineers the world over have thought for years that the next generation of smaller, more-efficient electronic and photonic devices could be based on the use of carbon nanotubes, structures 10,000 times thinner than a human hair but with tremendous potential. http://www.physorg.com/news154800343.html Nanotechnology Wed, 25 Feb 2009 16:06:12 EST news154800343 Managing invasive plant species on the Great Plains has become more challenging in recent years in the face of human-caused environmental change, including the positive responses of invaders to altered atmospheric chemistry and longer growing seasons, says a University of Colorado at Boulder professor. http://www.physorg.com/news151074298.html Space & Earth Tue, 13 Jan 2009 13:04:58 EST news151074298 Following the Clean Air Act Amendments of 1970 and 1990 acidic deposition in North America has declined significantly since its peak in 1973. Consequently, research has shifted from studying the effects of acidic deposition to the recovery of these aquatic and terrestrial ecosystems. Regional-scale studies have focused primarily on aquatic systems and while many of these ecosystems are showing signs of chemical recovery (increases in acid neutralizing capacity and pH, decreases in sulfate and aluminum concentrations), recovery is slower than expected based on the magnitude of the decline in acid deposition. http://www.physorg.com/news150988084.html Space & Earth Mon, 12 Jan 2009 13:08:04 EST news150988084 Increasing levels of nitrogen deposition associated with industry and agriculture can drive soils toward a toxic level of acidification, reducing plant growth and polluting surface waters, according to a new study published online in Nature Geoscience. http://www.physorg.com/news146157072.html Space & Earth Mon, 17 Nov 2008 15:11:12 EST news146157072 Nanotechnology offers unique opportunities to advance the life sciences by facilitating the delivery, manipulation and observation of biological materials with unprecedented resolution. The ability to pattern nanoscale arrays of biological material assists studies of genomics, proteomics and cell adhesion, and may be applied to achieve increased sensitivity in drug screening and disease detection, even when sample volumes are severely limited. http://www.physorg.com/news143135041.html Nanotechnology Mon, 13 Oct 2008 16:44:01 EST news143135041 In a recent special issue of Chemical Vapor Deposition devoted to nanodiamonds, editors Amanda Barnard and Oliver Williams note that "the diversity of nanocarbon structures and allotropes has led to a plethora of growth techniques and unique properties, and has opened the door to a number of exciting applications." http://www.physorg.com/news140189177.html Nanotechnology Tue, 09 Sep 2008 14:26:17 EST news140189177 When rain settles the atmosphere and brings air pollutants to the ground, it can have a lasting effect on ecosystems, sometimes hundreds of miles away, according to a Texas AgriLife Research agricultural engineer. http://www.physorg.com/news133613357.html Space & Earth Wed, 25 Jun 2008 11:49:17 EST news133613357