Wobbly polarity is key to preventing magnetic avalanches on disk drives
Jul 16, 2007 |
4.1 / 5 (27) |
0
Push two magnets together and you'll set off an avalanche of activity, forcing atoms on each magnet to align their polarity with the intruding magnetic field. It may sound like a party trick for physicists, ...
NRL scientists demonstrate efficient electrical spin injection into silicon
Jul 16, 2007 |
4.5 / 5 (16) |
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Scientists at the Naval Research Laboratory (NRL) have efficiently injected a current of spin-polarized electrons from a ferromagnetic metal contact into silicon, producing a large electron spin polarization ...
Nano propellers pump with proper chemistry
Nanotechnology / Bio & Medicine
Jul 16, 2007 |
4.4 / 5 (13) |
0
The ability to pump liquids at the cellular scale opens up exciting possibilities, such as precisely targeting medicines and regulating flow into and out of cells. But designing this molecular machinery has proven difficult.
One giant leap for space fashion -- MIT designs sleek, skintight spacesuit
Space & Earth / Space Exploration
Jul 16, 2007 |
4.1 / 5 (76) |
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In the 40 years that humans have been traveling into space, the suits they wear have changed very little. The bulky, gas-pressurized outfits give astronauts a bubble of protection, but their significant mass ...
Clues to future evolution of HIV come from African green monkeys
Medicine & Health / HIV & AIDS
Jul 16, 2007 |
4.3 / 5 (20) |
0
Monkey viruses related to HIV may have swept across Africa more recently than previously thought, according to new research from The University of Arizona in Tucson.
Immune system 'escape hatch' gives cancer cells traction
Jul 16, 2007 |
4.9 / 5 (7) |
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Scientists at Johns Hopkins and elsewhere say they have mapped out an escape route that cancers use to evade the body’s immune system, allowing the disease to spread unchecked.
Extreme weather monitoring boosted by space sensor
Jul 16, 2007 |
4.2 / 5 (5) |
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The first soil moisture maps with a spatial resolution of one km are available online for the entire southern African subcontinent. As soil moisture plays an important role in the global water cycle, these maps, based on ...
Eye test causes severe lethargy in infants
Medicine & Health / Medications
Jul 16, 2007 |
5 / 5 (1) |
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New research suggests that an eyedrop used to diagnose a rare syndrome in infants can cause severe lethargy lasting up to 10 hours and requiring hospital admission and oxygen administration. In the article “Adverse Effects ...
Poor sleep associated with cognitive decline in elderly women
Jul 16, 2007 |
4.5 / 5 (2) |
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Women who experienced cognitive decline over a 13 to 15 year period after age 65 were more likely to sleep poorly than women whose cognition did not decline, according to a study led by researchers at the San Francisco VA ...
Certain type of colitis now more common, severe among hospitalized patients
Jul 16, 2007 |
4.5 / 5 (2) |
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The rate of cases of colitis (colon inflammation) caused by the bacteria Clostridium difficile more than doubled among patients hospitalized in the United States between 1993 and 2003, and the illness was more severe and ...
6 out of 10 doctors aren't frustrated that patients can't lower cholesterol
Medicine & Health / Medications
Jul 16, 2007 |
3.3 / 5 (3) |
0
Family doctors don’t always feel that they can achieve healthy cholesterol levels in their patients even though they are aware of the dangers of cardiovascular disease, according to an international survey of practitioners ...
New research provides hope for childhood cancer sufferers
Jul 16, 2007 |
4.5 / 5 (2) |
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Scientists investigating drug therapies for children with Acute Lymphoblastic Leukaemia (ALL) have presented new data demonstrating for the very first time that a small molecule called ABT-737 can increase the effectiveness ...
Vaccine trials inject hope into koala's future
Medicine & Health / Medications
Jul 16, 2007 |
3.7 / 5 (3) |
0
The first Australian trials of a vaccine developed by Queensland University of Technology that could save Australia's iconic koala from contracting chlamydia are planned to begin later this year.
Report finds forest enterprises stifled by red tape, putting forests, incomes at risk
Jul 16, 2007 |
5 / 5 (2) |
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A new study reports that community forest enterprises represent an invisible investment of US$2.5 billion in management and conservation in some of the planet’s richest forest habitats. This is more than governments in tropical ...
Stem cell specialists face questioning
Jul 16, 2007 |
5 / 5 (2) |
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A top panel of experts will face questions of public and scientific concern on stem cell research during an international conference being held at The University of Manchester this week.
