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Keyword: molecule

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  • Space Sugar Discovered Around Sun-Like Star

    08/30/2012 10:16:01 AM PDT · by skinkinthegrass · 14 replies
    Space.com ^ | 29 August 2012 Time: 06:01 AM ET | SPACE.com Staff
    What a sweet cosmic find! Sugar molecules have been found in the gas surrounding a young sun-like star, suggesting that some of the building blocks of life may actually be present even as alien planets are stillforming in the system.
  • Air Force-Funded Research Is Shattering Traditional Notions Of Laser Limits

    02/09/2010 12:26:12 AM PST · by ErnstStavroBlofeld · 13 replies · 523+ views
    Space War ^ | 01/09/2010 | Maria Callier/Air Force Office of Scientific Research
    Air Force Office of Scientific Research and National Science Foundation-funded professor, Dr. Xiang Zhang has demonstrated at the University of California, Berkeley the world's smallest semiconductor laser, which may have applications to the Air Force in communications, computing and bio-hazard detection. The semiconductor, called a plasmon, can focus light the size of a single protein in a space that is smaller than half its wavelength while maintaining laser-like qualities that allow it to not dissipate over time. "Proposed almost seven years ago, researchers had been unable to demonstrate a working plasmonic laser until our experiment," said Zhang. "It is an...
  • Scientists spot organic molecule on distant planet (HST spots methane 63 light-years away)

    03/19/2008 2:38:51 PM PDT · by NormsRevenge · 8 replies · 220+ views
    Reuters on Yahoo ^ | 3/19/08 | Will Dunham
    WASHINGTON (Reuters) - An organic molecule has been spotted for the first time in the atmosphere of a planet outside our solar system, a key step toward possibly finding signs of life on a distant world, scientists said. Astronomers using the Hubble Space Telescope found methane in the atmosphere of a planet called HD 189733b, which is about the size of Jupiter and is 63 light-years from Earth, they said in research published on Wednesday in the journal Nature. Organic molecules contain carbon-hydrogen bonds and can be found in living things. Methane, for instance, is found in natural gas and...
  • Organic Molecules Found On Alien World For First Time

    02/11/2008 4:29:07 PM PST · by blam · 19 replies · 150+ views
    New Scientist ^ | 2-11-2008 | Stephen Battersby
    Organic molecules found on alien world for first time 18:21 11 February 2008 NewScientist.com news service Stephen Battersby The giant planet HD 189733b is too hot for its methane and water vapour to signal life (Illustration: Christophe Carreau/ESA)Tools Organic molecules – in the form of methane – have been detected on a planet outside our solar system for the first time. The giant planet lies too close to its parent star for the methane to signal life, but the detection offers hope that astronomers will one day be able to analyse the atmospheres of Earth-like worlds. Astronomers Mark Swain and...
  • Scientists Find Memory Molecule

    08/28/2006 7:07:24 PM PDT · by annie laurie · 30 replies · 847+ views
    PhysOrg.com ^ | August 27, 2006 | Unattributed
    In an article in Science magazine, SUNY Downstate researchers describe erasing memory from the brain by targeting a molecular mechanism that controls memory. Finding may be applied to chronic pain, memory loss, and other conditions.Scientists at SUNY Downstate Medical Center have discovered a molecular mechanism that maintains memories in the brain. In an article in Science magazine, they demonstrate that by inhibiting the molecule they can erase long-term memories, much as you might erase a computer disc.Furthermore, erasing the memory from the brain does not prevent the ability to re-learn the memory, much as a cleaned computer disc may be...
  • Single molecule makes electronic switch

    08/11/2006 7:25:20 PM PDT · by annie laurie · 14 replies · 1,149+ views
    RSC.org / Chemistry World ^ | 08 August 2006 | Tom Westgate
    A single molecule, trapped between two electrodes, acts as a switch and has a ‘memory’ of the type used in data storage, Swiss and US researchers have found. Heike Riel of IBM’s research labs in Zurich says this is ‘a step along the way’ to making nanoscale electronic components a reality. Using single organic molecules as electronic components could allow researchers to miniaturise circuits far more than conventional techniques allow. They also avoid the interactions between the millions of molecules found in a standard transistor that can disrupt the conduction of charge. The scientists built their switch using a molecule...
  • I’ve found God, says man who cracked the genome

    06/11/2006 9:51:12 PM PDT · by Marius3188 · 407 replies · 8,449+ views
    Times Online ^ | June 11, 2006 | Steven Swinford
    THE scientist who led the team that cracked the human genome is to publish a book explaining why he now believes in the existence of God and is convinced that miracles are real. Francis Collins, the director of the US National Human Genome Research Institute, claims there is a rational basis for a creator and that scientific discoveries bring man “closer to God”. His book, The Language of God, to be published in September, will reopen the age-old debate about the relationship between science and faith. “One of the great tragedies of our time is this impression that has been...
  • The Problem With Evolution

    09/26/2005 5:44:09 AM PDT · by DARCPRYNCE · 340 replies · 6,041+ views
    ChronWatch ^ | 09/25/05 | Edward L. Daley
    Charles Darwin, the 19th century geologist who wrote the treatise 'The Origin of Species, by means of Natural Selection' defined evolution as "descent with modification". Darwin hypothesized that all forms of life descended from a common ancestor, branching out over time into various unique life forms, due primarily to a process called natural selection. However, the fossil record shows that all of the major animal groups (phyla) appeared fully formed about 540 million years ago, and virtually no transitional life forms have been discovered which suggest that they evolved from earlier forms. This sudden eruption of multiple, complex organisms is...
  • Mimicking Viruses May Provide New Way To Defeat Them

    04/06/2004 7:43:34 PM PDT · by LibWhacker · 6 replies · 141+ views
    Bio.com ^ | 3/29/04
    03/29/04 -- Viruses, often able to outsmart many of the drugs designed to defeat them, may have met their match, according to new research from the University of Wisconsin-Madison. The findings show that the introduction of a harmless molecule that uses the same machinery a virus needs to grow may be a potent way to shut down the virus before it infects other cells or becomes resistant to drugs. The results are published in the March issue of the journal, Antimicrobial Agents and Chemotherapy. "When a virus encounters a susceptible cell, it enters and says, 'I'm now the boss,'" explains...
  • Red Meat Molecule'May Cause Health Problems'

    09/29/2003 3:20:49 PM PDT · by blam · 33 replies · 480+ views
    Ananova ^ | 9-29-2003
    Red meat molecule 'may cause health problems' Eating red meat introduces a potentially dangerous non-human molecule into the body tissues, new research has showed. A study found that the molecule, a sugar only found in non-human mammals, is absorbed into tissues such as blood vessels and secretory cells. Tests showed that it can generate an immune response which might induce harmful inflammation. The scientists have not ruled out a link with cancer and heart disease - although they acknowledge that at present this is speculation. To date, research has focused on the role of red meat saturated fats and chemical...
  • Astronomy Picture of the Day 1-19-03

    01/19/2003 5:14:11 AM PST · by petuniasevan · 9 replies · 294+ views
    NASA ^ | 1-19-03 | Robert Nemiroff and Jerry Bonnell
    Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 January 19 Fullerenes as Miniature Cosmic Time Capsules Credit & Copyright: Keith Beardmore (LANL) Explanation: Scientists have found, unexpectedly, tiny time capsules from billions of years in the past. The discovery involves small molecules that can apparently become trapped during the formation of large enclosed molecules known as fullerenes, or buckyballs. Luann Becker (UCSB) and collaborators recently found fullerenes in an ancient meteorite that fell to Earth...
  • The Molecule That Helps Us ... Erm, Forget It

    08/30/2002 9:07:41 AM PDT · by blam · 10 replies · 283+ views
    IOL ^ | 8-28-2002
    The molecule that helps us... erm, forget it August 28 2002 at 05:59PM Paris - A molecule which helps the brain delete unwanted information could be to blame for the memory loss which creeps up with old age, according to a Swiss study that was published on Thursday. "Not everything that we learn is useful, so the brain needs a mechanism to prevent itself being burdened by unhelpful details," said researchers Alcino Silva and Sheena Josselyn in the article in the British journal Nature. Studies on mice by the Swiss Federal Institute of Technology in Zurich found that those in...