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Dye-sensitized solar cells: Best energy harvesting sources for future AF UAVs

Dye-sensitized solar cells (DSSCs) are expected to power Air Force unmanned aerial vehicles (UAVs) in the future because they are an optimum energy harvesting source that may lead to longer flight times without refueling.

Energy | Source: Air Force Office of Scientific Research | Views: 1793 | Comments: 0
Catching the blood cell bus gives fatal yeast infection a clean getaway

Yeast fungus cells that kill thousands of AIDS patients every year escape detection by our bodies' defences by hiding inside our own defence cells, and hitch a ride through our systems before attacking and spreading,

Health | Source: Society for General Microbiology | Views: 1792 | Comments: 0
New piece in the jigsaw puzzle of human origins

In an article in today's Nature, Uppsala researcher Martin Brazeau describes the skull and jaws of a fish that lived about 410 million years ago. The study may give important clues to the origin of jawed vertebrates, and thus ultimately our own evolution.

Evolution | Source: Uppsala University | Views: 1791 | Comments: 0
Guam rhino beetles got rhythm

In May 2008 the island of Guam became a living laboratory for scientists as they attached acoustic equipment to coconut trees in order to listen for rhinoceros beetles.

Ecology | Source: University of Guam | Views: 1791 | Comments: 0
Brain structure corresponds to personality

Personalities come in all kinds. Now psychological scientists have found that the size of different parts of people's brains correspond to their personalities; for example, conscientious people tend to have a bigger lateral prefrontal cortex, a region of the brain involved in planning and controlling behavior.

Psychology | Source: Association for Psychological Science | Views: 1791 | Comments: 0
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Brain structure corresponds to personality

Personalities come in all kinds. Now psychological scientists have found that the size of different parts of people's brains correspond to their personalities; for example, conscientious people tend to have a bigger lateral prefrontal cortex, a region of the brain involved in planning and controlling behavior.

Psychology | Source: Association for Psychological Science | Views: 1791 | Comments: 0
New targeted therapy finds and eliminates deadly leukemia stem cells

New research describes a molecular tool that shows great promise as a therapeutic for human acute myeloid leukemia (AML), a notoriously treatment-resistant blood cancer.

Cancer | Source: Cell Press | Views: 1790 | Comments: 0
Toxic chemicals found in common scented laundry products, air fresheners

A University of Washington study of top-selling laundry products and air fresheners found the products emitted dozens of different chemicals. All six products tested gave off at least one chemical regulated as toxic or hazardous under federal laws, but none of those chemicals was listed on the product labels.

Health | Source: University of Washington | Views: 1789 | Comments: 0
Answering that age-old lament: Where does all this dust come from?

Where does it come from? Scientists in Arizona are reporting a surprising answer to that question, which has puzzled and perplexed generations of men and women confronted with layers of dust on furniture and floors. Most of indoor dust comes from outdoors. Their report appears in the ACS' Environmental Science & Technology, a semi-monthly journal.

Chemistry | Source: American Chemical Society | Views: 1789 | Comments: 0
Inside the consumer mind: Brain scans reveal choice mechanism

That gorgeous sweater has your name written on it. But, those red suede pumps are calling your name too. What goes through your mind as you consider these choices? During normal economic times, you might indulge in a whole new wardrobe.

Neuroscience | Source: University of Minnesota | Views: 1788 | Comments: 0
The story of X -- evolution of a sex chromosome

In the first evolutionary study of the chromosome associated with being female, University of California, Berkeley, biologist Doris Bachtrog and her colleagues show that the history of the X chromosome is every bit as interesting as the much-studied, male-determining Y chromosome, and offers important clues to the origins and benefits of sexual reproduction.

Genetics | Source: University of California - Berkeley | Views: 1786 | Comments: 0
Skunk's strategy not just black and white

Predators with experience of skunks avoid them both because of their black-and-white coloration and their distinctive body shape, according to UC Davis wildlife researcher Jennifer Hunter. The study was published online Oct. 21 in the journal Behavioral Ecology.

Animal Behavior | Source: University of California - Davis | Views: 1786 | Comments: 0
100,000-year-old ochre toolkit and workshop discovered in South Africa

An ochre-rich mixture, possibly used for decoration, painting and skin protection 100,000 years ago, and stored in two abalone shells, was discovered at Blombos Cave in Cape Town, South Africa.

Archaeology | Source: University of the Witwatersrand | Views: 1783 | Comments: 0
Global warming slows coral growth in Red Sea

In a pioneering use of computed tomography (CT) scans, scientists have discovered that carbon dioxide induced global warming is in the process of killing off a major coral species in the Red Sea. As summer sea surface temperatures have remained about 1.5 degrees Celsius above ambient over the last 10 years, growth of the coral, Diploastrea heliopora, has declined by 30% and "could cease growing altogether by 2070" or sooner

Marine Biology | Source: Woods Hole Oceanographic Institution | Views: 1781 | Comments: 0
Researchers reveal remarkable fossil

Researchers from China, Leicester and Oxford have discovered a remarkable fossil which sheds new light on an important group of primitive sea creatures.

Paleontology | Source: University of Leicester | Views: 1779 | Comments: 0
Alzheimer's disease may protect against cancer and vice versa

People who have Alzheimer's disease may be less likely to develop cancer, and people who have cancer may be less likely to develop Alzheimer's disease, according to a new study published in the December 23, 2009, online issue of Neurology®, the medical journal of the American Academy of Neurology.

Neuroscience | Source: American Academy of Neurology | Views: 1769 | Comments: 0
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