ScienceDaily Technology Headlines
for Sunday, November 7, 2010
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Cosmic curiosity reveals ghostly glow of dead quasar (November 6, 2010) -- Astronomers have discovered that the strange-looking object discovered two years ago as part of the Galaxy Zoo citizen science project, called "Hanny's Voorwerp," is a large cloud of glowing gas illuminated by the light from a quasar that died out up to 70,000 years ago. ... > full story
'Nano-drug' hits brain-tumor target: Unique triggering device delivers antitumor drugs (November 6, 2010) -- Employing new drug-engineering technology that is part of an advanced science called nanomedicine, a research team has created a "nanobioconjugate" drug that may be given by intravenous injection and carried in the blood to target the brain tumor. It is engineered to specifically permeate the tumor cell wall, entering endosomes, mobile compartments within cells. ... > full story
Math professor illuminates cellular basis of neural impulse transmission (November 6, 2010) -- A new mathematical model shows that the calcium current through an N-type channel is larger than calcium channels that are not involved in synaptic transmission, contrary to the currently accepted channel conductance hierarchy. ... > full story
X-rays offer first detailed look at hotspots for calcium-related disease (November 6, 2010) -- Using intense X-rays, researchers have determined the detailed structure of a key part of the ryanodine receptor, a protein associated with calcium-related disease. Their results pinpoint the locations of more than 50 mutations that cluster in disease "hotspots" along the receptor and offer insights into how the mutations might cause the receptor to malfunction. ... > full story
New statistical model moves human evolution back three million years (November 5, 2010) -- Evolutionary divergence of humans and chimpanzees likely occurred some 8 million years ago rather than the 5 million year estimate widely accepted by scientists, a new statistical model suggests. ... > full story
Nanoshells provide golden 'touch' in killing breast tumors (November 5, 2010) -- Using tiny gold "nanoshells" to deliver just a little heat to breast tumor cells already treated with radiation boosts the killing potential of the treatment -- not just shrinking the tumor but killing the cancer stem cells, said researchers. ... > full story
Nuclear materials detector shows exact location of radiation sources (November 5, 2010) -- A table-top gamma-ray detector can not only identify the presence of dangerous nuclear materials, but can pinpoint and show their exact location and type, unlike conventional detectors. ... > full story
Colonic navigation: Nanotechnology helps deliver drugs to intestinal target (November 5, 2010) -- Nanoparticles help smuggle drugs into the gut, according to a new study. There are several drugs that would have more beneficial therapeutic effects if they could be targeted at absorption by the lower intestine. ... > full story
New Way to Peer at Distant Galaxies (November 5, 2010) -- Astronomers have discovered a new way of finding cosmic zoom lenses, which allows astronomers to peer at galaxies in the distant Universe. ... > full story
The Large Hadron Collider enters a new phase (November 5, 2010) -- Proton running for 2010 in the LHC at CERN came to a successful conclusion on November 4. Since the end of March, when the first collisions occurred at a total energy of 7 TeV, the machine and experiment teams have achieved all of their objectives for the first year of proton physics at this record energy and new ground has been explored. For the rest of the year the LHC is moving to a different phase of operation, in which lead ions will be accelerated and brought into collision in the machine for the first time. ... > full story
Neutron stars may be too weak to power some gamma-ray bursts; Black holes may be power source (November 5, 2010) -- Long-duration gamma-ray bursts flash across the universe to signal the collapse of a massive star, but this collapsar model predicts either a neutron star or a black hole is left behind. New calculations of the energy released by gamma-ray bursts find it too large to be powered by a neutron star, even highly magnetized, spinning magnetars. Thus, astronomers conclude, the likely power source is a black hole. ... > full story
Deep impact spacecraft successfully flies by comet Hartley 2 (November 4, 2010) -- The EPOXI mission successfully flew by comet Hartley 2 on Nov. 3, 2010, and the spacecraft has begun returning images. Hartley 2 is the fifth comet nucleus visited by any spacecraft and the second one visited by the Deep Impact spacecraft. ... > full story
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