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Tag: "more" at biology news

Want to save polar bears? Follow the ice

...ems (GIS) map that will enable conservationists to more accurately predict where sea ice—a vital habitat f...eriods of time without food as the sea ice becomes more distant and inaccessible. The main question for conservationists is which of the existing 18 pop...

For many insects, winter survival is in the genes

...Denlinger said. "This protective mechanism is much more complex than we envisioned." ...

Mule deer moms rescue other fawns

.... As a result, whitetail fawns suffer considerably more predation during the first months of life than do ...ule deer fawns." Mule deer may have developed a more effective aggressive defence because they rely on fighting to protect themselves against predators y...

'Virtual Patient' to simulate real-time organ motions for radiation therapy

...ing the actual therapy mean that doctors will have more confidence delivering the radiation to a moving tu...sed 4-D VIP-Man will eventually be used as an even more general anatomical modeling tool for the biomedical community to help patients with respiratory and ...

NASA-funded robotic sub finds bottom of world's deepest sinkhole

...challenge, DEPTHX had to navigate by recognizing a more global response from all of its sensors. Wettergreen said demonstrating that SLAM could work in such a featureless environment suggests that it will have applications in environments with similarly sparse features, like rivers or mines. Though ...

Philandering female felines forgo fidelity

...of London has found that many cheetah litters have more than one father. While promiscuity in the animal ...ound that about 43 percent of cheetah litters with more than one cub were fathered by more than one male, revealing a mating system that deviates from those...

Lessons from the orangutans: Upright walking may have begun in the trees

...tively ancient, tree-dwelling apes, rather than in more recent human ancestors that had already descended ...t a human or other ape ancestor. It's been getting more and more difficult for us to say what's a human and what's an ape, and our work makes that much more...

An 'elegant' idea proves its worth 25 years later

...know how to eliminate nitrogen in urine, so having more in the body carries more nitrogen out and reduces the toxic effects of excess nitrogen accumulation." Excess nitrogen yiel...

Human stem cell treatment restores motor function in paralyzed rats

...eve that the therapy may eventually be proven even more effective in human patients, who would be able to receive physical therapy once treated. “Physical therapy may accelerate integration of the grafted stem cells and enhance their therapeutic benefit,” Johe said, adding that the goal is to provide ...

Scientists discover 5 new species of sea slugs from the Tropical Eastern Pacific

... It took Hermosillo and her collaborators two more years to identify the animals in the new collection by comparing them to existing collections, consulting specialists and using a scanning electron microscope to examine the jaws and other hard parts of the nudibranchs that distinguish species. Th...

Pistachios lower cholesterol, provide antioxidants

... and oxidation," says Gebauer. Pistachios contain more lutein, ?normally found in dark leafy vegetables -- beta carotene ?a precursor to vitamin A ?and gamma tocopherol ?the major form of vitamin E ?than other nuts. It is oxidized LDL and other lipproteins that contribute to plaque formation in arteries...

Arctic ice retreating more quickly than computer models project

...), shows that the Arctic's ice cover is retreating more rapidly than estimated by any of the 18 computer m...ets, blending early aircraft and ship reports with more recent satellite measurements that are considered more reliable than the earlier records, show that ...

Statin treatment improves spatial memory in mouse models of Alzheimer's

...memory in both males and females, the results were more pronounced in males. Dr. H. A. Morcos, chair of Pharmacology at the American University of Antigua, and colleagues at Florida A & M University presented the study April 30 at Experimental Biology 2007 in Washington, DC. His presentation is part ...

Puzzling plankton yield secrets to role in evolution/global photosynthesis

...roles in oceanic biomass production. "With even more picoplankton genomes in the sequencing queue at DOE JGI, we’re positioned to secure a better grasp on the mechanisms of species adaptation and the great diversity of biological pathways operating in the oceans," said Grigoriev. "This will also enabl...

Mice with a migraine show signs of brain damage

Migraines may be doing more than causing people skull-splitting pain. Scientis...arteries expand dramatically and make a great deal more oxygen-rich blood available to meet the demand for energy, some parts of the brain still wind up exp...

How to look at dinosaur tracks

...an be inaccurate without these considerations ?the more erosion that has occurred, the larger the apparent dimensions of the track. Applications of this apparently larger foot size derived from an undertrack may lead to calculations of higher estimated hip length, and, as the authors point out, may also l...

A cherry on top: Tart cherries may alter heart/diabetes factors

Tart cherries may be good for more than just making pie, according to new data from an animal study conducted by University of Michigan Health System researchers and presented today at a major scientific meeting. In a study involving rats, the researchers report that animals that re...

More recycling on the farm could reduce environmental problems

...that use lower inputs of pesticides and energy and more recycling of energy and materials, according to an...including reduced use of inorganic fertilizers and more on-farm energy generation from wind and fermentation of biosolids. It would also reduce overcropping...

Hearts of male and female rainbow trout are different

...ve higher citrate levels and females would benefit more from the stimulation of PDH than males. The study also sought to determine if sodium cyanide (NaCN) -- an inhibitor of oxidative metabolism ¡V decreases activity of the glycolytic pathway and cardiac performance in both sexes, and if males posses...

Ecology in an era of globalization

...llowing are highlights from the meeting, including more extensive work done since the event. In an introd...radation. They suggest ecological science must be more rapidly integrated to keep up with the changes, including an ecological knowledge system to facilita...

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