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Tag: "percent" at biology news

Flocking together: Study shows how animal groups find their way

...tely guide the group reduced from approximately 50 percent to less than 5 percent. As a result, the number of informed individuals required to lead a small group was about the same as the number needed to lead a large one, Couzin said The researchers extended their experiments by introducing two subgroups w...

Biodiversity hotspots identify conservation priorities

...Revisited identifies 34 regions worldwide where 75 percent of the planet's most threatened mammals, birds, an...mphibians survive within habitat covering just 2.3 percent of the Earth's surface (roughly equivalent to the combined areas of the five largest U.S. states). T...

Transgenic plants remove more selenium from polluted soil than wild plants, new tests show

...arly tolerant of the contaminated soil, growing 80 percent as well as the GS plants planted in clean soil. Because USDA regulators are scrupulous about experiments involving genetically modified plants in the field, the researchers took great care to minimize the transfer of genes through pollen. "Before w...

Increased risk of osteoporosis associated with gene that one in five people have

About nineteen percent of people have a genetic variation that may increa... variations of the gene, known to be present in 19 percent of the general population, was found in women who had significantly lower blood estrogen levels and ...

New Drugs For Bad Bugs: UF Approach Could Bolster Antibiotic Arsenal

...ve to bring a new drug to market.?/p> About 70 percent of bacteria found in hospitals resist at least one of the drugs commonly used to treat the infections they cause, according to the Food and Drug Administration. The agency warns that unless problems are detected early and swift action taken to find s...

Gene therapy promising for growing tooth-supporting bone

...ls that got the BMP-7 treatment produced nearly 50 percent more supporting bone around dental implants than those receiving the conventional treatment. "This study represents a proof-of-concept investigation. We are encouraged about the promise of this treatment," said Giannobile, also an associate professo...

New lab technique identifies high levels of pathogens in therapy pool

...hat have been shown to capture and remove up to 95 percent of "Mycobacterium avium" aerosols. A 2004 study by Pace and his colleagues using the same molecular technique found that billions of microbes, in the form of "soap scum," can be found in a one-inch-square section of a normal home shower curtain. ...

To control germs, scientists deploy tiny agents provocateurs

... of Health study last year reported that almost 80 percent of bacterial infections are in the biofilm forma. Biofilms can often constitute several species of bacteria and can be both harmful and beneficial. In one role, biofilms can coat plant roots and symbiotically aid ecological processes such as nitroge...

Harmful chemicals may reprogram gene response to estrogen

...pment. Once the rats reached adulthood, almost 95 percent had developed the uterine tumors. Furthermore, the tumors were much larger and more numerous than those in genetically defective rats not receiving the DES treatment. "These data suggest that environmental exposures during development of the uterus c...

Disease diagnosis, biodefense among UH chemical research projects

... is important because infectious diseases cause 26 percent of global mortality and are the third leading cause of death in the United States. Microbial identification also is important in food safety and biodefense. Traditional culturing and growth-testing methods are being replaced by molecular biology-base...

Solutions that reduce death of marine life reeled in by International Smart Gear Competition

...for tuna in Pacific waters. In initial testing, 42 percent more bigeye tuna were caught using Beverly's new weighted, deep-set gear. An innovative combination of glowing ropes and stiffer nets--the results of collaboration among a chemist, biologist and fisherman--was recognized as a runner up with $5,000 i...

Infants With Rare Genetic Disease Saved by Cord Blood Stem Cells

...atic newborns survived transplant, whereas only 43 percent of the symptomatic babies survived, the study show... that study, Kurtzberg's team demonstrated that 85 percent of children who received cord blood survived for two to seven years -- the longest period of time th...

NASA study finds snow melt causes large ocean plant blooms

...estern Arabian Sea have increased by more than 350 percent over the past seven years. The study is in this week's SCIENCE magazine When winter and spring snow cover is low over Eurasia, the amount of solar energy reflected back into the atmosphere is less. A decline in the amount of snow cover means less of...

Defenseless plants arm themselves with metals

... grown in nickel-enriched soil, Thlaspi takes up 3 percent of its body weight in the metal. Salt and his colleagues have shown that this metal content is what makes the plants resistant to pathogens. Salt proposes a scenario in which at some point in evolutionary history some plants acquired a mutation that...

Growth in biomass could put US on road to energy independence

... a renewable or recurring basis ?would displace 30 percent of the nation's petroleum consumption for transportation. Supplying more than 3 percent of the nation's energy, biomass already has surpassed hydropower as the largest domestic source of r...

Human Cells Filmed Instantly Messaging for First Time

... a renewable or recurring basis ?would displace 30 percent of the nation's petroleum consumption for transportation. Supplying more than 3 percent of the nation's energy, biomass already has surpassed hydropower as the largest domestic source of r...

Emergence of cancer as major cause of childhood death in developing countries is not being adequately addressed

...he New England Journal of Medicine. “More than 60 percent of the world’s children have little or no access to effective cancer therapy,?Pui said. “And their survival rates are very inferior to rates in countries with advanced health care systems. However, the World Health Organization and many international...

Potential Drug Target For Treating Cocaine Abuse Found

...d 3.2 million people in the United States ?about 1 percent of the population - use cocaine, according to estimates. Of this number, more than 550,000 are crack users. In 2002, 1.5 million Americans were thought to be dependent on or abusing cocaine. "Cocaine is capable of destroying not only the lives of tho...

Technique may allow cancer patients to freeze eggs, preserving fertility before starting treatment

...ng process. Using vitrification, we are getting 98 percent survival. For a woman with cancer, these are the o...than traditional methods. Using mouse oocytes, 80 percent of eggs that had been vitrified became fertilized with ICSI, with a live birth rate of about 30 perc...

Youth With HIV Take More Risks After New Meds Introduced

..." Lightfoot says. In the 1999-2000 group, only 53 percent of the teens were on HAART drug therapy. Lightfoot says it's "unclear" why more teens are not taking HAART. "It may be that physicians are reluctant to prescribe antiretroviral medications to certain subpopulations of youth, such as substance-using ...

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