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Tag: "hard" at biology news

Scientists journey to southern Africa to unravel the secret world of elephant communication

...aterholes or ideally in central Africa, where it's hard to conduct an aerial census because of the dense forest canopy." Human-generated noise is another concern for conservationists. Researchers have found that rotating helicopter blades generate low-pitched noises, and possibly seismic vibrations, that...

The evolutionary triumph of flower power

...cause their nature and beauty is so obvious. It is hard to imagine that we might have been responsible at least in part for their appearance. With the proposed model of evolution and adaptation to a human emotional niche, perhaps we have a clearer picture of our floral companions." ...

Road salt affects mitigation wetlands

...l in late April. "PennDOT is between a rock and a hard place," says Silver. "Everyone knows that the salt is not good for the environment, but salting roads is a huge safety issue in a part of the country that gets 10 to 12 feet of snow every winter." Silver's research does show a large decrease in non-...

Of mice and men's (and women's) contraceptives

... "When trying to develop a new contraceptive, it's hard because we need to identify a target that's specif... timing of sperm or egg development. We're working hard on understanding this mechanism." A similar human equivalent of MSY2, Contrin, has been identified ...

Successful Test Of Single Molecule Switch Opens The Door To Biomolecular Electronics

... roadmap now for how to do this, and we’re already hard at work applying it to a wide variety of potentially exciting applications,?he says. Authors on the Nano Letters paper are Lindsay, who also is the Nadine and Edward Carson Professor of Physics and Chemistry and Biochemistry at ASU; ASU physicists F...

Gene silencing technique offers new strategy for treating, curing disease

...he experiments worked beautifully," he said. "It's hard to believe that this strategy would work so well if nature wasn't doing it already." The researchers designed their RNA to match up with and target specific genes. "It's possible that the body is making the RNAs that we are using, and that will be a...

Team Invents Device For Weighing Individual Molecules

...k out the 'needle' from the 'haystack,' and that's hard to do, among other reasons because 95 percent of the proteins in the blood have nothing to do with cancer." The new method might ultimately permit the creation of microchips, each possessing arrays of miniature mass spectrometers, which are devices ...

Depression gene may weaken mood-regulating circuit

...ting circuit was connected. "Until now, it's been hard to relate amygdala activity to temperament and genetic risk for depression," said Dr. Andreas Meyer-Lindenberg, a lead author. "This study suggests that the cingulate's ability to put the brakes on a runaway amygdala fear response depends upon the de...

A whole lot of shaking goin' on triggers early hatching in red-eyed tree frogs

... -- not only the speed of these vibrations, or how hard the clutch is shaken, but the length of and time between the movements that signal the embryos to hatch. Undisturbed, red-eyed tree frog eggs usually hatch six to eight days after fertilization, but can hatch up to 30 percent earlier if attacked by ...

Male Combat Veterans Rank High In Heart Disease Risk

...ted consuming 14 or more servings of beer, wine or hard liquor a week. Heavy smoking was determined by calculating the subjects' pack-years smoked (the number of years smoking multiplied by the number of packs smoked per day) and dividing the results into quartiles. The researchers used the standard defin...

Compound might defeat African sleeping sickness, clinical trial beginning this month

...rks and helps a lot of people, that's when all our hard work really pays off, and we can be proud of our efforts." Three years ago, the National Foundation for Infectious Diseases presented its Jimmy and Roselyn Carter Humanitarian Award to Bill and Melinda Gates. That day, a talk by former President Jim...

Siberian tigers hang tough

...ice, declared, "these results are a tribute to the hard work and dedication of conservation organizations and government officials here in Russia. Despite massive poaching pressures in the 1990s, we have been able to turn back the tide, and retain our tiger population." John Seidensticker, of the Save the...

More animals join the learning circle

...gull-baiting behaviour is so unusual, "it would be hard to argue that it is individual learning", says ethologist Janet Mann of Georgetown University in Washington DC, one of the authors of the dolphin sponging study. Behavioural scientist Andrew Whiten of the University of St Andrews in the UK agrees, "T...

Researchers devise new technique for creating human stem cells

...t "at this at this stage in our understanding, the hard fact is that the only way to create an embryonic stem cell from a somatic cell is by nuclear transfer into oocytes. Taking advantage of this current capability -- such as colleagues in South Korea and other countries are doing -- is critical if we ar...

New lead reported in tumor angiogenesis

... in the world of science, involves a great deal of hard work - and a little luck. Wang said his group began a few years ago studying a secreted protein called hepatocyte growth factor, or HGF, and its role in helping head and neck tumors to turn cancerous. HGF does so, in part, by helping to induce nearby...

Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

... we thought. They followed Armstrong ?a well-known hard trainer ?and the changes in his efficiency over se...lities and got where his is through dedication and hard training." Source The study, entitled "Improved muscular efficiency displayed as 'Tour de France' ...

Chemical 'band-aid' prevents heart failure in mice with muscular dystrophy

...y their heart is failing, because it's not pumping hard enough. That can be true, but another major problem is poor function during the relaxation phase when the heart fills with incoming blood. In our study, we found that cardiac myocytes in dystrophin-deficient mice don't relax and lengthen as readily a...

A novel method to measure circadian cycles

... time zones, may get an answer to why waking up is hard to do. ...

Researchers identify new catfish family

...relatively rare in that the researchers have had a hard time finding many specimens. They collected just one specimen in a recent five-day expedition. The researchers are concerned about the fish's habitat, which is threatened by exploitation of the forests and possible damming of the rivers it lives in....

Seaweed could make junk food healthier

...t a lot of these types of foods. "We believe it's hard to change people's habits and that the most practical solution is to improve the food they do eat. With a burger, for example, you would simply remove some of the fat and replace it with the seaweed extract, which is an entirely natural product from...

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