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) -- Wageningen geneticists (The Netherlands) are developing a method to replicate the parents of a chosen plant. Known as 'reverse breeding', this will have a big impact for the breeding industry. http://www.physorg.com/news180120006.html Biology Tue, 15 Dec 2009 17:40:04 EST news180120006 To exploit the quantum world to the fullest, a key commodity is entanglement -the spooky, distance-defying link that can form between objects such as atoms even when they are completely shielded from one another. Now, physicists at the Joint Quantum Institute (JQI), a collaborative organization of the National Institute of Standards and Technology and the University of Maryland, have developed a promising new source of entangled photons using quantum dots tweaked with a laser. The JQI technique may someday enable more compact and convenient sources of entangled photon pairs than presently available for quantum information applications such as the distribution of "quantum keys" for encrypting sensitive messages. http://www.physorg.com/news177763808.html Physics Wed, 18 Nov 2009 10:50:39 EST news177763808 (PhysOrg.com) -- Meiosis - the pairing and recombination of chromosomes, followed by segregation of half to each egg or sperm cell - is a major crossroads in all organisms reproducing sexually. Yet, how the cell precisely choreographs these chromosomal interactions is a long-standing question. http://www.physorg.com/news177322387.html Biology Fri, 13 Nov 2009 08:13:35 EST news177322387 (PhysOrg.com) -- A team of U.S. and Japanese scientists has shown for the first time that the spectroscopic "fingerprint" of high-temperature superconductivity remains intact well above the super chilly temperatures at which these materials carry current with no resistance. This confirms that certain conditions necessary for superconductivity exist at the warmer temperatures that would make these materials practical for energy-saving applications - if scientists can figure out how to get the current flowing. http://www.physorg.com/news170602115.html Physics Thu, 27 Aug 2009 14:29:39 EST news170602115 (PhysOrg.com) -- In its fight against an intruding virus, an enzyme in our immune system may sense certain types of viral RNA pairs, according to scientists. http://www.physorg.com/news168619740.html Biology Tue, 04 Aug 2009 16:40:01 EST news168619740 Research led by The University of Arizona College of Pharmacy has found that medication prescribers correctly identified fewer than half of drug pairs with potentially dangerous drug-drug interactions. http://www.physorg.com/news166717731.html Medicine & Health Mon, 13 Jul 2009 15:40:01 EST news166717731 (PhysOrg.com) -- Nature might abhor a vacuum, but it loves a backup plan. In living organisms, physiological systems are kept under tight control by hierarchies of organic safety catches and emergency releases, helping to make sure that things run as smoothly as possible. http://www.physorg.com/news163430546.html Chemistry Fri, 05 Jun 2009 14:22:58 EST news163430546 Physicists at the U.S. Department of Energy's Ames Laboratory have experimentally demonstrated that the superconductivity mechanism in the recently-discovered iron-arsenide superconductors is unique compared to all other known classes of superconductors. These findings - combined with iron-arsenide's potential good ability to carry current due to their low anisotropy - may open a door to exciting possible applications in zero-resistance power transmission. http://www.physorg.com/news160238619.html Physics Wed, 29 Apr 2009 15:44:26 EST news160238619 The Medical College of Georgia is part of a large national study examining the genes of 10,000 patients with schizophrenia and 10,000 healthy individuals in an effort to pinpoint variations that can improve disease diagnosis and treatment. http://www.physorg.com/news160056481.html Medicine & Health Mon, 27 Apr 2009 13:08:36 EST news160056481 A ghostly property of matter, called quantum tunneling, may aid the quest for accurate, low-cost genomic sequencing, according to a new paper in Nature Nanotechnology Letters by Stuart Lindsay and his collaborators at the Biodesign Institute of Arizona State University. Tunneling implies that a particle, say an electron, can cross a barrier, when, according to classical physics, it does not have enough energy to do so. http://www.physorg.com/news156953933.html Nanotechnology Sun, 22 Mar 2009 15:43:19 EST news156953933 (PhysOrg.com) -- University of Washington (UW) researchers are helping to write the operating manual for the nano-scale machine that separates chromosomes before cell division. The apparatus is called a spindle because it looks like a tiny wool-spinner with thin strands of microtubules or spindle fibers sticking out. The lengthening and shortening of microtubules is thought to help push and pull apart chromosome pairs. http://www.physorg.com/news155569966.html Biology Fri, 06 Mar 2009 13:53:16 EST news155569966 A study in the Feb. 1 issue of the journal Sleep was the first to use twin data to examine the longitudinal link between sleep problems and depression. Results of this study demonstrate that sleep problems predict later depression; the converse association was not found. These findings are consistent with the theory that early treatment of sleep problems may protect children from the development of depression. http://www.physorg.com/news152721800.html Medicine & Health Sun, 01 Feb 2009 14:43:45 EST news152721800 Trillions of microbes make their home in the gut, where they help to break down and extract energy and nutrients from the food we eat. Yet, scientists have understood little about how this distinctive mix of microbes varies from one individual to the next. http://www.physorg.com/news147532823.html Medicine & Health Wed, 03 Dec 2008 13:20:23 EST news147532823 (PhysOrg.com) -- Like astronomers tweaking images to gain a more detailed glimpse of distant stars, physicists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have found ways to sharpen images of the energy spectra in high-temperature superconductors - materials that carry electrical current effortlessly when cooled below a certain temperature. These new imaging methods confirm that the electron pairs needed to carry current emerge above the transition temperature, before superconductivity sets in, but only in a particular direction. http://www.physorg.com/news145110552.html Physics Wed, 05 Nov 2008 12:29:12 EST news145110552 (PhysOrg.com) -- Cornell researchers and colleagues have produced the first atomic-scale description of what electrons are doing in the mysterious "pseudogap" in high-temperature superconductors. http://www.physorg.com/news141320422.html Physics Mon, 22 Sep 2008 16:40:22 EST news141320422 When an electrical current passes through a wire it emanates heat - a principle that's found in toasters and incandescent light bulbs. Some materials, at low temperatures, violate this law and carry current without any heat loss. But this seemingly trivial property, superconductivity, is now at the forefront of our understanding of physics. http://www.physorg.com/news140359809.html Physics Thu, 11 Sep 2008 13:50:09 EST news140359809 A simple memory trick has helped show UC Davis researchers how an area of the brain called the perirhinal cortex can contribute to forming memories. The finding expands our understanding of how those brain areas that form memories are organized. http://www.physorg.com/news139161590.html Medicine & Health Thu, 28 Aug 2008 16:59:50 EST news139161590