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Tag: "raising" at biology news

MIT 'seeing machine' offers hope to blind

...machine to navigate through a virtual environment, raising the potential for "previewing" unfamiliar buildings a person wants to visit. Goldring explained that visually challenged people are often terrified of going to new places. "There's a fear of missing simple visual cues, steps and not being able to d...

Seeing the serpent

...enomous snakes evolved about 60 million years ago, raising the stakes and forcing primates to get better at detecting them. "There's an evolutionary arms race between the predators and prey. Primates get better at spotting and avoiding snakes, so the snakes get better at concealment, or more venomous, and ...

The vicious cycle of rainforest destruction

...increasing the amount of carbon in the atmosphere, raising the earth's temperature and magnifying the impact on the rainforests. Heading the work at Leeds is Professor of Earth System Science, Jon Lloyd: "The two major vegetation systems in the tropics are rainforest and savanna. As it gets warmer and drier...

Ready, set, mutate?and may the best microbe win

...They grew the bacteria for one month in fermentor, raising the temperature a half degree Celsius each day. Over a span of 1,500 generations, the percentage of mutant strains inside the fermentor ebbed and flowed as the single-celled microbes competed for dominance. Eventually, one strain squeezed out almost...

Even when faint, ovary scent draws sperm cells

...exit streams. Flow rate can be regulated simply by raising or lowering the height of the source medium, in this case a buffer solution. The researchers affixed a microscope and camera to the device and then recorded video of the sperm during assays. "We combined in a microfluidic device the ability to gene...

Microbes transform 'safest' PBDEs into more harmful compounds

...t this process also could occur in the real world, raising concerns about the continued manufacture and use of deca-BDEs, Alvarez-Cohen says. In their study, Alvarez-Cohen and her colleagues exposed octa-BDE and deca-BDE to five types of anaerobic bacteria commonly found in the soil. Based on previous resear...

Methane-belching bugs inspire a new theory of the origin of life on Earth

...foundation for a new alternative energy source, by raising the possibility of cost-efficient conversion of renewable biomass into clean fuel. James G. Ferry is Stanley Person Professor of Biochemistry and Molecular Biology, and Christopher House is Assistant Professor of Geosciences, both at Penn State. Th...

Brain region linked to fly slumber

...ed a brain area in flies that is crucial to sleep, raising interesting speculation over the purpose of sleep ...s are known to have a role in learning and memory, raising the possibility that sleep and learning are somehow linked in the fly brain. This lends weight to th...

UCLA researchers develop T-cells from human embryonic stem cells

...pulated and coaxed to develop into mature T-cells, raising hopes for a gene therapy to combat AIDS. The study, to be published the week of July 3 in the online edition of the Proceedings of the National Academy of Sciences, found that it is possible to convert human embryonic stem cells into blood-forming s...

Race to halt global amphibian crisis boosted by rediscovery of endangered Colombian frogs

...es had the deadly fungal disease chytridiomycosis, raising hopes that the species can be saved in the new protected area or through captive breeding. The fungus has been found as close as 40 kilometers (25 miles) away on the other side of the Sierra Nevada mountains, and scientists will study the frogs to le...

Microcapsules like it hot and salty

...molecules. With the powerful supply of energy from raising the temperature, the bonds between the polymer molecules with opposite charges are loosened and as a result, the capsule wall becomes softer. The material of the shell can therefore flow closer together; the wall becomes thicker and denser. The molec...

Plutonium or greenhouse gases? Weighing the energy options

...oblem? I don't have the answer, but the points I'm raising are ones I think people need to be considering." ...

Too mellow for our predatory world

...icult. The National Park Management is considering raising the entry fee from the currently charged $100 to $500 in order to reduce the number of visitors - possibly the only possibility to create sustainable tourism, thereby ensuring the necessary protection of the unique animal and plant world of the Galá...

Extreme environment changes fish appearance

...o has a profound effect on the fishes' appearance, raising questions about how rare species can be protected ...ole pupfish. "Restricting food availability and raising the temperature just a few degrees shifts morphology dramatically," Lema said. The findings have ...

End of deforestation in view? Experts advance new way to size up global forest resources

...transitioning from deforestation to afforestation, raising hopes for a turning point for the world as a whole, according to researchers advancing a more sophisticated approach to measuring forest cover. The novel approach looks beyond simply how much of a nation's area is covered by trees and considers the ...

How mammals fuel milk production may have implications for cancer

...eads to early lipid accumulation during pregnancy, raising the possibility that the gene might be important in the increased synthetic demand for lipid during lactation. To further investigate, in the current study, the researchers examined mice lacking either Akt1 or the related gene Akt2, which are expr...

Gold nanoparticles prove to be hot stuff

...lecules. But the heating effect could be useful in raising local temperatures in certain experiments, such as heating a protein just enough to allow scientists to watch it unfold, the paper suggests. ...

Invasive ants territorial when neighbors are not kin

...s time and workforce into collecting resources and raising larvae instead of defending territories, then colonies should grow at a much faster rate." In their native Argentina, aggressive interactions between colonies are much more common and colonies are significantly smaller. When Argentine ants were in...

Computer with brain connections changing quality of life of paralyzed

...n of the nervous system. The findings are also raising a number of new questions about the quality of life amongst paralysis sufferers. Patients surveyed were found to be much healthier mentally than psychiatrically depressed patients without any life-threatening bodily disease. Only 9% of ALS patients s...

Anti-dandruff compound may help fight epilepsy

...to let three times as much potassium flow through, raising the possibility of restoring normal nerve cell activity. “Most drug discoveries uncover chemicals that stop things from working - it’s a lot easier to close or block a door than open it,?Li says. “But here we found a chemical that makes a defecti...

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