Flexible charge pump: New small-scale generator produces alternating current by stretching zinc oxide wires

Flexible charge pump: New small-scale generator produces alternating current by stretching zinc oxide wires

Nanotechnology / Nanophysics

created Nov 09, 2008 | popularity 4.5 / 5 (24) | comments 0

(PhysOrg.com) -- Researchers have developed a new type of small-scale electric power generator able to produce alternating current through the cyclical stretching and releasing of zinc oxide wires encapsulated ...


Simple brain mechanisms explain arbitrary human visual decisions

Medicine & Health / Research

created Nov 09, 2008 | popularity 4.2 / 5 (23) | comments 6

Mark Twain, a skeptic of the idea of free will, argues in his essay "What Is Man?" that humans do not command their minds or the opinions they form.


Engineered killer T cell recognizes HIV-1's lethal molecular disguises

Engineered killer T cell recognizes HIV-1's lethal molecular disguises

Medicine & Health / HIV & AIDS

created Nov 09, 2008 | popularity 4.6 / 5 (14) | comments 1

Researchers at the University of Pennsylvania School of Medicine and colleagues in the United Kingdom have engineered T cells able to recognize HIV-1 strains that have evaded the immune system. The findings ...


Researchers unravel mystery of brain aneurysms

Medicine & Health / Genetics

created Nov 09, 2008 | popularity 4.4 / 5 (13) | comments 0

Yale researchers have taken the first critical steps in unraveling the mysteries of brain aneurysms, the often fatal rupturing of blood vessels that afflicts 500,000 people worldwide each year and nearly killed Vice President-elect ...


Quintet of proteins forms new, early-warning blood test before heart attack strikes

Chemistry /

created Nov 09, 2008 | popularity 4.5 / 5 (11) | comments 0

A team of Johns Hopkins biochemists has identified a mixed bag of five key proteins out of thousands secreted into blood draining from the heart's blood vessels that may together or in certain quantities form the basis of ...


Cancer drugs may build and not tear down blood vessels

Medicine & Health / Cancer

created Nov 09, 2008 | popularity 3.9 / 5 (12) | comments 1

Scientists have thought that one way to foil a tumor from generating blood vessels to feed its growth – a process called angiogenesis – was by creating drugs aimed at stopping a key vessel growth-promoting protein. But now ...


Sedimentary records link Himalayan erosion rates and monsoon intensity through time

Space & Earth / Earth Sciences

created Nov 09, 2008 | popularity 4.6 / 5 (8) | comments 0

Throughout history, the changing fortunes of human societies in Asia have been linked to variations in the precipitation resulting from seasonal monsoons. A new paper published in the British journal Nature Geoscience sugges ...


Drug trial shows dramatic reduction in hidden heart disease

Medicine & Health / Medications

created Nov 09, 2008 | popularity 3.6 / 5 (7) | comments 1

(PhysOrg.com) -- A Harvard-led study shows that the risk of heart attack and stroke among subjects with “silent heart disease” — and normal cholesterol levels — can be dramatically reduced by the use of an already widely ...


T cell-based HIV vaccine candidate demonstrates positive results

Medicine & Health / HIV & AIDS

created Nov 09, 2008 | popularity 4.2 / 5 (5) | comments 1

The question of whether or not to continue to pursue the development of T-cell-based HIV-1 vaccines has been a source of controversy following last year's widely publicized failure of the field's most promising candidate, ...


Researchers discover new risk factor for cardiovascular disease, and a way to control it

Medicine & Health / Diseases

created Nov 09, 2008 | popularity 4.8 / 5 (4) | comments 0

A team of international researchers – including scientists from the McGill University Health Centre (MUHC) and McGill University – have discovered that having high levels of particular protein puts patients at increased risk ...


Low potassium linked to high blood pressure

Medicine & Health / Health

created Nov 09, 2008 | popularity 4.7 / 5 (3) | comments 0

As a risk factor for high blood pressure, low levels of potassium in the diet may be as important as high levels of sodium—especially among African Americans, according to research being presented at the American Society ...


Music headphones can interfere with heart devices

Medicine & Health / Other

created Nov 09, 2008 | popularity 4.7 / 5 (3) | comments 1

Headphones for MP3 players placed within an inch of pacemakers and implantable cardioverter defibrillators (ICDs) may interfere with these devices, according to research presented at the American Heart Association's Scientific ...


Heart failure hospitalization rates rise among nation's seniors

Medicine & Health / Diseases

created Nov 09, 2008 | popularity 4 / 5 (1) | comments 0

Heart failure is reaching epidemic levels among seniors in the United States, according to research presented at the American Heart Association's Scientific Sessions 2008.


Hispanics less likely to have repeat revascularizations 1 year after angioplasty

Medicine & Health / Other

created Nov 09, 2008 | popularity not rated yet | comments 0

Hispanic patients were 57 percent less likely than Caucasian patients to undergo coronary artery bypass surgery (CABG) one year after successful angioplasty, a type of percutaneous coronary intervention (PCI) to open blockages ...



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