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Tag: "accounts" at biology news

Fishy cooperation

...y because we tend to develop cognitively demanding accounts for our own behavior and believe that absent the s...place. It is very well possible, however, that our accounts overestimate the amount of intelligence that goes into complex behavior. Moreover, we have a tendenc...

Does evolution select for faster evolvers?

...solution of a mathematical model of evolution that accounts for this cross-species genetic exchange," said Michael Deem, the John W. Cox Professor in Biochemical and Genetic Engineering and professor of physics and astronomy. The research appears in the Jan. 29 issue of Physical Review Letters. Past mat...

Biodiesel won't drive down global warming

...in January this year. Transportation currently accounts for more than a fifth of all greenhouse gas emissions emitted in the EU. Rapeseed-derived biodiesel is the major renewables-derived biofuel used across Europe and, as well as helping to improve energy security, is expected to play an important role i...

Study uncovers a lethal secret of 1918 influenza virus

...eadly respiratory infection that echoed historical accounts of how the disease claimed its victims. Importantly, the new work shows that infection with the virus prompted an immune response that seems to derail the body's typical reaction to viral infection and instead unleashes an attack by the immune syst...

Napoleon's mysterious death unmasked, UT Southwestern researcher says

...thological and tumor-staging methods to historical accounts and found that Napoleon died of a very advanced ca...ans who treated Napoleon on the island, eyewitness accounts and medical histories of family members. Autopsy and physician descriptions revealed no telltale ...

Xylitol reduces risk of cavities

...y. In the most common sugarless products, xylitol accounts for roughly a third of the sweetening. The studies nevertheless warrant the following recommendations: A daily intake of xylitol is recommended as a supplement for patients at high risk for tooth decay. Xylitol products that actively st...

Selective marker found to indicate aggressive form of breast cancer

...likely explain why this subtype disproportionately accounts for breast cancer mortality, according to DiRenzo. In a retrospective study of breast cancer tumors lacking estrogen receptors, progesterone receptors and Her2, DiRenzo and his colleagues found extremely high amounts of nestin in 14 of 16 tumor ...

Is there a pilot in the insect?

...observations of the behavior of winged insects. It accounts for the fact not only that insects descend facing a headwind and ascend with a tailwind, but also that honeybees land with a constant slope and drown when crossing mirror-smooth water1. Behind this astonishing behavior, hidden in the insect's cockp...

Tropical forests -- Earth's air conditioner

...ates the effects of large-scale deforestation, and accounts for the positive and negative climate effects of tree cover at different latitudes. The result, which appears in this week’s early online edition of the Proceedings of the National Academy of Sciences, makes a strong case for protecting and restoring...

Researchers identify gene involved in dog size

...and characterization of a key genetic variant that accounts for differences in dog size is particularly exciting because the underlying gene is present in all dogs and other diverse species, including humans,?said Eric Green, M.D., Ph.D., scientific director of the NHGRI Division of Intramural Research. “Disc...

Man's best friend lends insight into human evolution

...cquire through contact with their owners. What accounts for this piece of convergent evolution between humans and domestic dogs is nothing other than the process of domestication ?the breeding of dogs to tolerate, rather than fear, human company. According to Hare, domesticated dogs' ability to solve s...

Detecting poisons in nectar is an odour-ous task for honeybees

...act is a scientific mystery. The honeybee, which accounts for the pollination of at least 1/3 of the world’s crop plants, may encounter such poisoned nectar in common crop and garden plants such as Rhododendrons and almond trees. Can honeybees learn whether nectar contains toxins, and does this influence th...

Study shows dramatic increase in Caesarean sections

...ell said. "The degree to which maternal request accounts for the increase in caesarean sections isn't known, but similar studies in the UK have shown that maternal request is now the fifth most common reason for performing a caesarean section." Dr Pennell said that despite improvements in surgical and a...

Confirmed -- deforestation plays critical climate change role

...to the atmosphere. "Deforestation in the tropics accounts for nearly 20 per cent of carbon emissions due to human activities," Dr Canadell says. "This will release an estimated 87 to 130 billion tonnes of carbon by 2100, which is greater than the amount of carbon that would be released by 13 years of global...

Hearts of male and female rainbow trout are different

... the human body. Its failure to function properly accounts for 600,000 deaths each year. Similarly, the rainbow trout, native to the Pacific Northwest and beloved as a sport- and food fish, requires dynamic and sustained cardiac function to maintain its health and swimming activity. Previous studies of tr...

Modeling the restless brain

...erent regions of the brain, but this activity only accounts for around 2 to 5 percent of the total activity of the brain. Fluctuations of similar magnitude -- the ones studied by Sporns and Honey -- occur when a person is at rest, doing nothing. The nature of these "resting state fluctuations" is an activ...

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