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Tag: "twenty" at biology news

A much-needed shot in the arm for HIV vaccine development

...by the HIV/AIDS epidemic that hasclaimed more than twenty million lives and wiped out decades ofdevelopment gains," said Pascoal Mocumbi, "I do believe that thisscientific strategic plan will not only accelerate the development of alifesaving HIV vaccine but also boost African capacity in healthresearch to ...

Artifical cornea lets woman blind 20 years see

...ith normal vision sometimes take for granted. Now, twenty years and several life milestones later, Elma is a...t and care of patients like her. "I was blind for twenty years in both my eyes," Phifer says. "A regular cornea wouldn't work because of the severity of dama...

Great White shark evolution debate involves WSU Lake Campus geology professor

...e megladon line, which existed from two million to twenty million years ago. They were huge sharks, approximately the length of a Greyhound bus and possessing teeth that were up to six inches long," explains Ciampaglio. "However, our research, which is based on analyzing fossils of several hundred shark tee...

Supercomputers to focus brains on AIDS dilemma

...rst onto the scene, HIV/AIDS has claimed more than twenty million lives and continues to devastate societies around the world, particularly in Africa and other developing countries. In the late 1980s and early 1990s, after years of effort AIDS researchers succeeded in developing a class of drugs that proved...

Environmental lessons from tsunami as world's coastal population doubles

...e is likely to increase to 50 per cent in the next twenty five years as people flock to coastal cities ?many...ct of severe storms in the Caribbean over the past twenty years. The tsunami had less impact in areas where ecosystems were protected and local communities w...

Chernobyl: The true scale of the accident

...nificant reduction of radiation levels during past twenty years, governments need to revisit the classification of contaminated zones. Many areas previously considered to be at risk are in fact safe for habitation and cultivation. Current delineations are far more restrictive than demonstrated radiation lev...

Spring migration of pink-footed geese under threat

...ons of the goose have almost doubled over the past twenty years, from between 23,000 and 30,000 in the 1980s to 45,000 today. This growth, coupled with loss of natural habitats, has forced geese to break their migration on farmland, and into conflict with farmers. "While conditions on the breeding grounds ...

Faster immune system testing set to improve poultry quality

...and of Zagreb Biotek in Croatia had the basic idea twenty years ago but he had to wait for advances in molecular biology. "The test is ready but we need to develop the companion immunotherapeutic to convince an animal health company to take it on," explains project leader Dr William Ragland of Zagreb Biotek...

UGA researchers find that hunting can increase the severity of wildlife disease epidemics

...can increase the number of infected individuals by twenty five percent. "If we want to preserve the hunted population, we should be careful about when we schedule the hunting season compared to birth season because if it's too early or late, it can drive the population to extinction," Rohani said. "If we ...

Most widely used organic pesticide requires help to kill

...terflies, for example, have anywhere from seven to twenty species of gut bacteria. Humans have between five hundred and one thousand species of micro flora that take up residence in the intestinal tract. "In moths and butterflies, the complexity is much lower than in mammals, and even some other insects,"...

'Nymph of the sea' reveals remarkable brood

...tomy such as legs and eyes and also includes about twenty eggs, each about half a millimetre in size, and two possible juveniles. "The fossil has been christened Nymphatelina gravida, meaning' a pregnant young woman of the sea'. This remarkable discovery provides an unequivocal and unique view of parenta...

US conservation efforts bring more marine turtles to UK

...ridley turtles in UK and French waters in the last twenty years. The research team believes this is most likely the result of protective measures put in place in the United States and Mexico. ‘The data tells the story of the interaction between marine turtles and humans over the last hundred years,?said ...

New hereditary breast cancer gene discovered

...certain hereditary deformity syndrome run a nearly twenty times higher risk of contracting breast cancer tha...gs show that women with this syndrome run a nearly twenty times greater risk of contracting breast cancer than expected. Moreover, many of the women were youn...

Scripps Research study reveals new activation mechanism for pain sensing channel

...ed to chemical insult." "Cysteines, one of the twenty building blocks of all proteins, are known to undergo oxidation/reduction reactions," Patapoutian continued. "Somehow the TRPA1 protein is tuned to sense cysteine modifications. In fact, any cysteine reactive agent seems to activate TRPA1, although w...

Turtles are loyal in feeding as well as in breeding

... foraging sites. Dr Broderick and her team tracked twenty green and loggerhead turtles nesting at two beaches on Cyprus, using satellite transmitters. All females tracked for more than six months remained in the same foraging grounds, moving to deeper water for the winter where they conducted dives of up to...

Quitting smoking reduces risk of lung cancer mortality by 70 percent

...hat the risks of dying from lung cancer were about twenty times higher among women who smoke compared with male smokers, a worrying finding given the increasing trend for women to take up the habit in many countries. The research paper's author, Dr Rachel Huxley, Director of Nutrition and Lifestyle at Th...

New study sheds light on 'dark states' in DNA

... Light travels at 186,000 miles per second, but in twenty picoseconds it would only travel just under a quarter of an inch. Still, a picosecond is not so fast compared to the speed of some chemical reactions in living cells. In tests of single DNA bases, the dark state lasted for 10-150 picoseconds -- muc...

New study challenges 'critical period' in childhood vision development

... for 12 years before she received treatment. Now, twenty years after her surgery, the researchers found that she is able to discern between separate objects, determine depth, localize faces amongst a background of natural scenes, and match faces by their identity. This case demonstrated that a person can ...

One species, many genomes

...ethods and experience gathered with Arabidopsis to twenty different rice varieties. How environment and genome interact is also the goal of new, even more powerful methods. While the technology used so far can only identify genes that have changed or are lost relative to the reference genome, direct seque...

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