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Tag: "area" at biology news

Madagascan tropical forests return thanks to better management and well-defined ownership

...ised to find the highest deforestation rates in an area with low human population density and large distance to markets, while the area with highest population density had stable forest cover," says Thomas Elmqvist, Professor at the Sto...

Scripps research team sheds light on long-sought cold sensation gene

...mical, formalin, and then exposed the affected paw area to a cold plate. Cold temperature clearly reduced the acute pain felt by control mice as shown by a reduction in the response to formalin injection when compared to the amount of time control mice spent flicking and licking their paws when placed...

Alien plants attack using 'resource conservation' as weapon, researchers say

...hers studied three ecosystems in Hawaii-a forested area with limited light, volcanic soils with low nutrients and a desert. They compared 19 invaders with 19 closely related indigenous plants-for example, an invasive raspberry versus a native raspberry. Using an electronic device that clamped onto the lea...

Brain's white matter -- More 'talkative' than once thought

...rienced glutamate in some less obvious way in this area of the brain, Bergles and his team studied nearby nerve cells to figure out where the glutamate might be coming from. By forcing single nerve cells to become excited one at a time, they discovered that as electrical impulses are carried along the ...

An ancient bathtub ring of mammoth fossils

...results place most mammoth finds in the Lake Lewis area at elevations of 600 to 1,000 feet, which echoes the distribution of boulders that originated from far away—so-called erratics—and rafted in on icebergs. The evidence suggests that these elevations mirror the typical water depths when Lake Lewis and ...

New knowledge improves rice quality

...driving the whole process and making this research area so exciting," Dr. Zeigler said. "If we can link these two things together ?our new and improved knowledge and understanding of rice quality with affluent-consumer desires for better rice ?then it’s possible we can also help poor farmers improve their...

Targeting sugar on blood vessels may inhibit cancer growth

...er is the most common cause of cancer death and an area where novel therapies to block metastasis are desperately needed, according to first author Mark M. Fuster, M.D., assistant professor in the Division of Pulmonary and Critical Care Medicine in UCSD’s Department of Medicine. Solid tumors need a networ...

Invasion of the island bats

Ever since the relationship between land area and number of species crystallized into a mathematical power function, islands and island archipelagoes have been thought of as biological destinations where species from large continents arrive and, over time, evolve into new species in geographic s...

DNA repair proteins monitored at double-strand break

...and break allows the DNA to unravel and expose the area to repair proteins; the loss of functioning ATM and NBS1 blocks this important process. The team also showed that both NBS1 and ATM are needed to ensure that the repair factor, XRCC4, arrives at the double-strand break to help repair the damage. I...

Percutaneous aortic valve replacement safe, successful in high-risk patients

... 11 survivors showed that the average aortic valve area more than doubled, on average, following the procedure. In addition, the severity of heart failure significantly improved, as gauged by both B-type natriuretic peptide (NT-BNP), a protein produced by the ventricles of the heart during heart failure, ...

Sleepless for science: Flies show link between sleep, immune system in Stanford study

...ruption of the brain's central clock, which is the area of the fly brain that exhibits circadian gene activity, was responsible for the changes seen in the sick flies. But the behavior of the ill flies looked a lot like that of flies known to have disruptions in their genes controlling circadian rhythm. ...

Female-led infanticide in wild chimpanzees

... attacks; in at least one case, adult males in the area exhibited displaying behavior, with one old male unsuccessfully attempting to separate the females. The authors point out that these new observations indicate that such female-led infanticides are neither the result of isolated, pathological behav...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...d to be a cost-effective method to protect a large area from swimmers intending to carry out terrorist act...uct descriptions (4pMU1). In wind instruments, an area of controversy has been whether their sound quality and responsiveness are significantly affected by...

First demonstration of new hair follicle generation in an animal model

... pathways were awakened, sending stem cells to the area of injury. Unexpectedly, the regenerated hair follicles originated from non-hair-follicle stem cells. “We’ve found that we can influence wound healing with wnts or other proteins that allow the skin to heal in a way that has less scarring and incl...

Implanting dopamine generators in brain cells obtains improvement in Parkinson's in monkeys

...nts extracted from the carotid body in the striate area of the brain. The carotid body is a small structur...ar aggregates of the carotid body into the striate area of the brain, the improvement in movement in monkeys with Parkinson's and which had received transpl...

Iowa State scientists demonstrate first use of nanotechnology to enter plant cells

... of this kind of material can have a total surface area of a football field, making it possible to carry a large payload," Trewyn said. Lin’s nanoparticle has a unique "capping" strategy that seals the chemical goods inside. In previous studies, his group successfully demonstrated that the caps can be ...

Study warns deep-sea mining may pose serious threat to fragile marine ecosystems

... high-grade gold and copper. They are targeting an area known as the Manus backarc basin off the coast of Papua New Guinea. The active hydrothermal vents in these areas occur where new oceanic crust is formed through undersea volcanic activity. Until the late 1970s, scientists had assumed that life requir...

Rare soft-shell turtle, nesting ground found in Cambodia

...his one pristine stretch of the Mekong, making the area the world’s most important site for saving this pa...retch of Mekong River where the turtle lives is an area closed for many years to scientific exploration because it was one the last strongholds of the forme...

Cornell lab confirms deadly fish virus spreading to new species

...f VHSV. Other species from the Great Lakes Basin area that have tested positive by Cornell include bluegill, rock bass, black crappie, pumpkinseed, smallmouth and largemouth bass, muskellunge (New York’s No. 2 sport fish), northern pike, walleye, yellow perch, channel catfish, brown bullhead, white perc...

In Iran, cheetahs collared for the first time

...h Protected Area, Yazd Province, in the south-west area of the central Iranian plateau, where they were tranquilized, and fitted with compact GPS collars weighing 350 grams- only 1% of the cheetahs' weight. It is the first time the species has been handled by a scientific team in Iran and represents a un...

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