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Tag: "estimates" at biology news

Dust to gust

...every year, a much higher figure than the previous estimates of 13 million tons. The new estimate matches the calculations on the quantity of dust needed to supply the vital minerals for the continued existence of the Amazon rainforest. The researchers suggest that the Bodélé valley is such an important sou...

Incidence of stroke decreases over last 50 years

...ng to background information in the article. Prior estimates of long-term trends in the incidence and severity of stroke have varied. Determining trends could help guide health programs, public policy, and the allocation of research funding. Raphael Carandang, M.D., of Boston University, and colleagues exa...

A human taste for rarity spells disaster for endangered species

...egg. The Royal Society for the Protection of Birds estimates that up to 30 of Britain's most vulnerable species are targeted by collectors. Classical economics theory predicts that such exploitation is unlikely to extinguish a species because the cost of finding the last individuals would outweigh the benefits...

Elasticity imaging identifies cancers and reduces breast biopsies

...ies required.? The American Cancer Society (ACS) estimates that 212,920 women will be diagnosed with breast cancer in the United States this year. Early detection through screening is the best way to combat cancer at its early, most treatable stage. While mammography is the standard breast cancer screening e...

Wheat gene may boost foods' nutrient content

...group. He noted that the World Health Organization estimates that more than 2 billion people are deficient in zinc and iron, and more than 160 million children under the age of five lack an adequate protein supply. The cloned gene, designated GPC-B1 for its effect on Grain Protein Content, accelerates grain ...

Serengeti patrols cut poaching of buffalo, elephants, rhinos

... article in National Geographic, for example, said estimates of the poaching toll range as high as 200,000 in t... the populations still would be declining. "The estimates are just all over the place, not just for the Serengeti but all across Africa," Hilborn says. This c...

Researchers discover new gene responsible for brittle bone disease

.... The number of Americans affected is unknown, but estimates range from 20,000 to 50,000. While the study is an important early step in the search for a cure, its immediate effect may be to exonerate an expanded group of parents whose children frequently appear in emergency rooms with unexplained fractures, an...

Pilot study successful in taming allergic reactions to food

...ional Institute of Allergy and Infectious Diseases estimates that 6 percent to 8 percent of children have some type of food allergy. Most children outgrow egg allergy by age 5, but some people remain allergic for a lifetime. The findings are reported in an advance online edition of the Journal of Allergy a...

Perceived facial similarity in children is an estimate of kin recognition

...se ratings could also be transformed into accurate estimates of the probability that a given pair of children portrayed siblings. The study was conducted by researchers Laurence T. Maloney, of New York University's Psychology Department and Center for Neural Science, and Maria F. Dal Martello, of the Departmen...

Mars mission Risk 29: Scientists research ways to reduce radiation-induced brain damage

...mouse models approach for intestinal tumorigenesis estimates by space radiation Kathryn Held, Massachusetts General Hospital, Boston, mechanisms for induction of bystander effects by high energy particles in cells and tissues Fiorenza Ianzini, University of Iowa, Iowa City, Iowa, role of high-LET radiat...

More kidney cancer is detected and treated early, yet death rate rises

...m and urinary system). The American Cancer Society estimates there will be about 38,890 new cases of kidney cancer (24,650 in men and 14,240 in women) in the United States this year, and about 12,840 people (8,130 men and 4,710 women) will die from the disease. This study included data from 34,503 kidney can...

Brains can recover from alcoholic damage but patients should stop drinking as soon as possible

...r program that analyses spectroscopy data) to give estimates of changes to brain volume, form (morphology), metabolism and function. The technology enabled the researchers to superimpose the images of the patients?brains upon follow-up on to the images of the brains at the start of the study so that they c...

New dyslexia theory blames 'noise'

...s that dyslexia affects millions of children, with estimates of its incidence ranging from 5 to 15 percent. Sperling, who conducted her research as a doctoral student at USC, said the new findings point to a deeper problem - not just a visual deficit - affecting all areas of perception. Sperling said p...

New engineered drug may offer prolonged arthritis relief

...or of biomedical engineering and surgery. "Current estimates suggest it would require perhaps two injections per week of the unmodified drug. "With this advance, we believe treatments could go from twice a week to perhaps twice a month, and that would be a huge clinical gain," she said. By remaining at the...

Replacing insulin is top-ranked breakthrough foreseen for health in developing world

...tem Cells and the Future of Regenerative Medicine, estimates over 100 million potential US patients could benefit from such stem cell-based therapies, including victims of cardiovascular disease, auto-immune diseases, diabetes, cancer, neurodegenerative diseases and burns. Chronic diseases, the primary targ...

Air travel and flu: Post-9/11 restrictions delayed start of season

... national peak in flu deaths. They used government estimates of passenger air travel to explore any connection with the timing of the annual flu epidemics. They found the usual time taken for a flu epidemic to reach peak levels across the US was about two weeks, and that the national peak date was within two ...

Small, smaller, smallest -- The plight of the vaquita

...is declining. But the question of how often new estimates or indices must be obtained to monitor trends is a tricky one. Ship surveys are expensive and they cannot be expected to detect population declines or increases on an acceptable timescale for such a critically endangered species. According to one ana...

Siberian lakes burp 'time-bomb' greenhouse gas

...urately quantified. "We realized that our previous estimates were missing a very large and important component of lake emissions - in these bubbles were the dominant source of methane from lakes," said Walter, an International Polar Year post-doctoral fellow at the Institute of Arctic Biology at the University...

Ancient ape ruled out of man's ancestral line

...erican journal Science, are controversial. Earlier estimates had put the age of Little Foot at three to four million years old placing it potentially on a direct line to humans. The first recognisable stone tools appeared in Africa around 2.6 million years ago, but they were not made by Australopiths. Rathe...

Malaria may fuel spread of HIV in sub-Saharan Africa

...e shore of Lake Victoria as an example, Abu-Raddad estimates that 5 percent of all HIV infections are attributed to the heightened HIV viral load induced by malaria. "In Kisumu, we estimate that 10 percent of adult malaria episodes are attributed to HIV," he said. That translates into 8,500 excess HIV infec...

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