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Lead with a poisonous electron shield
01-16-2007 · EurekAlert!At a molecular level, what causes the toxic effects of lead? French researchers have now applied quantum chemistry to very simple enzyme models. As they have reported in "Angewandte Chemie," it seems that the lead's "electron shield" is the main culprit.
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Keywords: lead, poisonous, electron, shield, poisonou
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- NRL generates, modulates, and electrically detects pure spin currents in silicon
12-03-2007 · EurekAlert!
NRL scientists have generated, modulated and electrically detected a pure spin current in silicon, the semiconductor used most widely in the electronic device industry. This demonstration is a key enabling step for developing devices which rely on electron spin rather than electron charge, an emergent field known as "semiconductor spintronics." Progress in this field is expected to lead to devices which provide higher performance with lower power consumption and heat dissipation.
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- Highest Energies Yet From Laser Wakefield Acceleration: From Zero To A Billion Electron Volts ...
10-05-2006 · ScienceDaily
In a precedent-shattering demonstration of the potential of laser wakefield acceleration, scientists at the Department of Energy's Lawrence Berkeley National Laboratory, working with colleagues at the University of Oxford, have accelerated electron beams to energies exceeding a billion electron volts (1 GeV) in a distance of just 3.3 centimeters. Billion-electron-volt beams from laser wakefield accelerators open the way to very compact high-energy experiments and superbright free-electron lasers.
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- The dance of the electron spins
05-26-2007 · Science News Online
Physicists have used a novel measuring technique to track the motions of electron spins in a tiny magnet as its polarity flips, with north and south poles changing places.
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09-29-2007 · Science News Online
The remarkable strength and electrical properties of graphene, a chicken-wire network of carbon atoms, make it a promising new material for computer chips.
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- Cigarettes and lead linked to attention disorder
10-70-2006 · Science News Online
Nearly half a million cases of attention-deficit hyperactivity disorder among U.S. children are related to exposures to lead or their mothers' smoking while pregnant.
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- Researchers map spread of pathogens in the human body
10-19-2006 · EurekAlert!
Researchers at the University of Cambridge have discovered a new, more accurate, method of mapping how bacteria spread within the body, a breakthrough that could lead to more effective treatments and prevention of certain bacterial infections.
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- Low folate diets found to increase risk of colorectal cancer
11-02-2006 · EurekAlert!
A new study by scientists at the MUHC has revealed that a diet low in folate may increase the risk of developing colorectal cancer. Published in the scientific journal Cancer Research today, the study not only illustrates a way to prevent the disease but also provides further insight into the mechanisms of the disease, which could lead to novel therapies.
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- Malaria poses additional risks for first-time mothers
11-13-2006 · EurekAlert!
Preeclampsia is thought to be more common in parts of the world where there is a serious malaria problem and it has often been speculated that there might be a connection. Malaria is more common in a first pregnancy and so is preeclampsia. In both cases, the reasons are unknown. Researchers from the USA, UK and Tanzania set out to investigate the possibility that malaria might lead to preeclampsia.
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- Found -- the apple gene for red
11-30-2006 · EurekAlert!
CSIRO researchers have located the gene that controls the color of apples -- a discovery that may lead to bright new apple varieties.
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- Bank on a Cure researchers identify pathways mediating myeloma treatment side effects
12-11-2006 · EurekAlert!
Thalidomide is a widely prescribed treatment for multiple myeloma. However, an estimated 15 to 30 percent of patients suffer venous thromboembolisms (VTEs), blood clots, as a major complication. The Bank On A Cure DNA-bank researchers have identified four gene clusters associated with the VTEs. Identifying the associated single nucleotide polymorphisms (SNPs) for use as markers, may lead to the development of screenings and tailored interventions to prevent these side effects, as a major step toward personalized medicine.
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