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. (PhysOrg.com) -- Scientists have observed the smallest reported nanotube that has a square cross-section. The structure formed spontaneously and unexpectedly when silver nanowires were stretched and is a reminder that scientists still have much more to learn about the nanoscale world. http://www.physorg.com/news154355462.html Nanotechnology Fri, 20 Feb 2009 12:31:40 EST news154355462 (PhysOrg.com) -- The smallest nano-sized silica particles used in biomedicine and engineering likely won't cause unexpected biological responses due to their size, according to work presented today. The result should allay fears that cells and tissues will react unpredictably when exposed to the finest silica nanomaterials in industrial or commercial applications. http://www.physorg.com/news154021822.html Nanotechnology Mon, 16 Feb 2009 15:51:37 EST news154021822 (PhysOrg.com) -- The most detailed map of the Moon ever created has revealed never-before-seen craters at the lunar poles. The map is also revealing secrets about the Moon's interior -- and hinting about Mars's interior as well. C.K. Shum, professor of earth sciences at Ohio State University, is part of the international research team that published the map in the February 13 issue of the journal Science. http://www.physorg.com/news153671640.html Space & Earth Thu, 12 Feb 2009 14:34:36 EST news153671640 University of Arkansas researchers have used chemistry and geology to create a model that may explain the mystery of how modern-day gullies form on the surface of Mars. http://www.physorg.com/news153416239.html Space & Earth Mon, 09 Feb 2009 15:37:58 EST news153416239 (PhysOrg.com) -- This artist's rendering shows a "family portrait" of Jason-1, Topex/Poseidon, and OSTM/Jason-2, all NASA satellites that collect data about sea surface heights around the world. Sea surface heights are one component helpful to hurricane forecasters, as higher seas indicate warmer waters (that power storms) while lower seas indicate cooler waters (such as those in La Nina events in the eastern Pacific). http://www.physorg.com/news153146272.html Space & Earth Fri, 06 Feb 2009 12:38:25 EST news153146272 Researchers at the Foundation for Fundamental Research on Matter (FOM), the University of Twente in the Netherlands and the University of Seville in Spain have explained the formation and behaviour of the very fast water jet that is formed when an object impacts on a water surface. They have observed precisely what happens using a super-fast camera and have made a computer simulation of the process. http://www.physorg.com/news152472693.html Physics Thu, 29 Jan 2009 17:32:09 EST news152472693 (PhysOrg.com) -- MIT physicists have discovered that several high-temperature superconductors display patchwork quilt-like variations at the atomic scale, a surprising finding that could help scientists understand a new class of unconventional materials. http://www.physorg.com/news152379510.html Physics Wed, 28 Jan 2009 15:39:03 EST news152379510 The principle behind whispering galleries - where words spoken softly beneath a domed ceiling or in a vault can be clearly heard on the opposite side of the chamber - has been used to achieve what could prove to be a significant breakthrough in the miniaturization of lasers. Ultrasmall lasers, i.e., nanoscale, promise a wide variety of intriguing applications, including superfast communications and data handling (photonics), and optical microchips for instant and detailed chemical analyses. http://www.physorg.com/news152012068.html Physics Sat, 24 Jan 2009 09:35:03 EST news152012068 Inspired by the aquatic wriggling of beetle larvae, a University of Pittsburgh research team has designed a propulsion system that strips away paddles, sails, and motors and harnesses the energy within the water's surface. The technique destabilizes the surface tension surrounding the object with an electric pulse and causes the craft to move via the surface's natural pull. http://www.physorg.com/news151770818.html Technology Wed, 21 Jan 2009 14:34:09 EST news151770818 (PhysOrg.com) -- New climate maps of the Earth`s surface during the height of the last Ice Age support predictions that northern Australia will become wetter and southern Australia drier due to climate change. http://www.physorg.com/news151612069.html Space & Earth Mon, 19 Jan 2009 18:28:21 EST news151612069 People who received a mild electrical current to a motor control area of the brain were significantly better able to learn and perform a complex motor task than those in control groups. The findings could hold promise for enhancing rehabilitation for people with traumatic brain injury, stroke and other conditions. http://www.physorg.com/news151608273.html Medicine & Health Mon, 19 Jan 2009 17:25:15 EST news151608273 Cornell researchers have provided new insight into the molecular mechanism underlying an essential cellular system. They have discovered how receptors on cell surfaces turn off signals from the cell's environment, a function that is vital for cell functions such as growth, division and death. http://www.physorg.com/news151344416.html Biology Fri, 16 Jan 2009 16:06:56 EST news151344416 (PhysOrg.com) -- Using a NASA radar flying aboard India's Chandrayaan-1 spacecraft, scientists are getting their first look inside the moon's coldest, darkest craters. http://www.physorg.com/news151331093.html Space & Earth Fri, 16 Jan 2009 12:24:53 EST news151331093 (PhysOrg.com) -- A technology development engine that may help NASA safely return astronauts to the lunar surface has successfully completed its third round of testing. The goal of these tests is to reduce risk and advance technology for a reliable and robust rocket engine that could enable America's next moon landing. http://www.physorg.com/news151172287.html Space & Earth Wed, 14 Jan 2009 16:18:07 EST news151172287 A study from a team of researchers led by Dr. Andrew P. Makrigiannis, Director of the Molecular Immunology Research Unit at the IRCM, has identified a new mechanism regulating interferon production. This discovery, co-authored by scientists from the International Medical Center of Japan (Tokyo), the National Cancer Institute at Frederick (Maryland) and the McGill Centre for the Study of Host Resistance, was published on December 22, 2008 in the Journal of Experimental Medicine. http://www.physorg.com/news150996491.html Medicine & Health Mon, 12 Jan 2009 15:28:11 EST news150996491 The scientists describe their work in this week's Early Edition of the Proceedings of the National Academy of Sciences. In the study, the team shows how the loss of the protein HMGB2, found in the surface layer of joint cartilage, leads to the progressive deterioration of the cartilage that is the hallmark of osteoarthritis. http://www.physorg.com/news150991956.html Medicine & Health Mon, 12 Jan 2009 14:12:36 EST news150991956 The University of Colorado at Boulder has been awarded a $6 million grant from NASA to build a high-tech lunar dust detector for a 2011 mission to orbit the moon and conduct science investigations of the dusty lunar surface and its atmosphere. http://www.physorg.com/news150781336.html Space & Earth Sat, 10 Jan 2009 03:42:16 EST news150781336 (PhysOrg.com) -- Dwellings in colonies on the moon one day may be built with new, highly durable bricks developed by students from the College of Engineering at Virginia Tech. http://www.physorg.com/news150396734.html Technology Mon, 05 Jan 2009 16:52:14 EST news150396734 UC Davis Cancer Center researchers report today the discovery of a molecule that targets glioblastoma, a highly deadly form of cancer. The finding, which is published in the January 2009 issue of the European Journal of Nuclear Medicine and Molecular Imaging, provides hope for effectively treating an incurable cancer. http://www.physorg.com/news149769509.html Medicine & Health Mon, 29 Dec 2008 10:38:29 EST news149769509 (PhysOrg.com) -- Their names are now part of exploration history - Sea of Tranquility, Ocean of Storms, Frau Mauro, Hadley Rille, Descartes and Taurus-Littrow. They are the sites on the lunar surface visited by America's Apollo astronauts. Six unique locations. each with its own unique set of challenges to those who wanted to explore its secrets. http://www.physorg.com/news149349765.html Space & Earth Wed, 24 Dec 2008 14:02:45 EST news149349765 Men consistently outperform women on spatial tasks, including mental rotation, which is the ability to identify how a 3-D object would appear if rotated in space. Now, a University of Iowa study shows a connection between this sex-linked ability and the structure of the parietal lobe, the brain region that controls this type of skill. http://www.physorg.com/news148740976.html Medicine & Health Wed, 17 Dec 2008 12:56:16 EST news148740976 (PhysOrg.com) -- Fujitsu Laboratories announced today the development of power-saving CMOS technology for logic LSI chips for 32 nanometer- (32nm-) generation and beyond. The new technology enables employment of a specific silicon crystal surface, which previously had not been applied in silicon substrates due to the crystal surface's conventionally low performance in the past, by improving its performance. http://www.physorg.com/news148666062.html Technology Tue, 16 Dec 2008 16:07:42 EST news148666062 (PhysOrg.com) -- Data collected during several recent flybys of Titan by NASA's Cassini spacecraft have put another arrow in the quiver of scientists who think the Saturnian moon contains active cryovolcanoes spewing a super-chilled liquid into its atmosphere. The information was released today during a meeting of the American Geophysical Union in San Francisco, Calif. http://www.physorg.com/news148627336.html Space & Earth Tue, 16 Dec 2008 05:22:16 EST news148627336 (PhysOrg.com) -- Researchers at MIT recently found an elegant solution to a sticky scientific problem in basic fluid mechanics: why water doesn't soak into soil at an even rate, but instead forms what look like fingers of fluid flowing downward. http://www.physorg.com/news148225444.html Physics Thu, 11 Dec 2008 13:44:04 EST news148225444 (PhysOrg.com) -- The latest image of sea-surface height measurements from the U.S./French Jason-1 oceanography satellite shows the Pacific Ocean remains locked in a strong, cool phase of the Pacific Decadal Oscillation, a large, long-lived pattern of climate variability in the Pacific associated with a general cooling of Pacific waters. The image also confirms that El Niņo and La Niņa remain absent from the tropical Pacific. http://www.physorg.com/news148148961.html Space & Earth Wed, 10 Dec 2008 16:29:21 EST news148148961 (PhysOrg.com) -- To protect themselves from human defenses, disease-causing bacteria have evolved a cell wall made from a nearly impenetrable tangle of tightly woven strands. That`s made it difficult for scientists to see what goes on inside these potentially deadly organisms. But that era is now over. http://www.physorg.com/news147706559.html Biology Fri, 05 Dec 2008 13:35:59 EST news147706559 (PhysOrg.com) -- The nanobubbles that develop on submerged surfaces should not really be able to exist. Because of the enormous internal pressure, they should disappear within a short time. Nevertheless, they sometimes last for hours: an unexplained phenomenon. http://www.physorg.com/news147454736.html Nanotechnology Tue, 02 Dec 2008 15:38:56 EST news147454736 India`s Chandrayaan-1 spacecraft successfully reached its final operational orbit around the Moon on 12 November 2008. The spacecraft is now circling the Moon at an altitude of about 100 km. http://www.physorg.com/news145807780.html Space & Earth Thu, 13 Nov 2008 14:09:40 EST news145807780 (PhysOrg.com) -- Chandrayaan-1, the Indian Space Research Organisation`s (ISRO) lunar orbiter, was captured into orbit around the Moon on 8 November. One day later, the spacecraft performed a manoeuvre that lowered the closest point of its orbit down to 200 km from the Moon. http://www.physorg.com/news145545448.html Space & Earth Mon, 10 Nov 2008 13:17:28 EST news145545448 (PhysOrg.com) -- Cornell researchers have developed an ingenious microscopic method to observe the behavior of single nanoparticles of a catalyst, down to the resolution of single catalytic events. http://www.physorg.com/news145544570.html Nanotechnology Mon, 10 Nov 2008 13:02:50 EST news145544570