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Tag: "rate" at biology news

US infant mortality rate fails to improve

...t time since 1958. In 2003, the infant mortality rate was 6.8 deaths for every 1,000 live births, which was statistically unchanged from the 2002 rate of 7.0. Two-thirds of all infant deaths occurred within the first month of life. "These new statis...

Nanosecond-scale release of stinging jellyfish nematocysts

...h an electronic framing-streak camera at a framing rate of 1,430,000 frames per second. They show discharge kinetics of nematocysts in Hydra to be as short as 700 nanoseconds, creating an acceleration of up to 5,410,000 g. The researchers calculate that although the accelerated mass is very small (~1 nano...

Pollutant haze heats the Arctic

...ne of climate change and is projected to warm at a rate at least double that of the Earth as a whole," says University of Utah meteorology Chair Jim Steenburgh, who wasn't involved in the study. "Although the importance of greenhouse gas emissions is well-documented, particulate pollution also may play an...

Mice learn tasks that may help treat human psychiatric disorders

... about as common as Type I juvenile diabetes. This rate is higher than for other childhood disabilities, including Down's syndrome, cancer, cerebral palsy, hearing loss and vision impairment. Although the number of children diagnosed with autism has increased dramatically over the past 12 years, the upw...

No cell walls, no new cancer cells

...tment with an inhibitor of SREBP1 might reduce the rate of cancer cell proliferation to slow down tumor growth, or might enhance the effect of targeted therapies that aim to actually kill cancer cells." ...

Corals switch skeleton material as seawater changes

...wn in modern water. "The reduction in the corals' rate of growth that accompanied their exposure to the c...ed seawater chemistry, doing so slowed the corals' rate of growth by nearly 65 percent. "This provides us with further evidence that corals are extremely s...

UCLA study finds same genes act differently in males and females

...ales and females diverge in terms of disease risk, rate and severity." "This research holds important implications for understanding disorders such as diabetes, heart disease and obesity, and identifies targets for the development of gender-specific therapies," said Jake Lusis, Ph.D., co-investigator and...

Hope I die before I get old?

...es of 21 and 40, or over age 60. All were asked to rate or predict their own individual happiness at their...er group's members. Each participant was asked to rate his or her own current level of happiness on a scale of 1 to 10, and also to rate on that same scale...

Researcher studies, treats military with 'silent disease'

... don't know what the impact of hepatitis C is. The rate of hepatitis C has been studied in the military but not the outcomes," she said. "Nobody has talked to them as a research population ... and captured the story the way we do." Sjogren's research endeavors were funded by a grant from the DoD's Peer R...

Prevention is the best option: fighting autoimmune diseases

...nics toanalyse and purify many kinds of cells at a rate of over 25,000 cells every second. This technology is able to produce results that cannot be obtained by any other method as it allows every cell to be identified and sorted on an individual basis. "The ability to detect regulatory T cell deficits i...

Gorilla susceptibility to Ebola virus: the cost of sociality

...n playing only a minor role due to an insufficient rate of encounters between groups. In the new work, t...rilla transmission, and the result was a mortality rate of 77% of solitary males. Overall, 95% of the population disappeared in approximately one year. From...

Movie spies on malaria parasite's sneaky behavior

...ox," said Ménard. "We could not understand how the rate of infection could be so successful." Heussler's research team noticed irregular protrusions on the surface of liver cells that had been grown in a culture dish and infected with malaria. So they asked Ménard and Amino for help finding out whether...

Hopkins scientists show hallucinogen in mushrooms creates universal 'mystical' experience

...music and indirect, non-laboratory lighting. Heart rate and blood pressure were measured throughout. The...new, specially createdfollowup survey were used to rate experiences at appropriate times in the study. They included those that differentiate effects of psy...

Large dinosaurs were extremely hot in their day, UF study finds

...es centigrade, it suggests that they operated at a rate more like today's mammals and birds. While the lar...g to be universal relationships among size, growth rate and temperature. "There are differences between mammals and invertebrates, but within a group, fro...

Acidity in the brain could hold the key to stroke treatment

...te to intervene." NMR will be used to measure the rate at which hydrogen ions are exchanged between water and proteins in the brain. Acidity causes this rate to increase, changing the NMR signal of water. ...

Some people would give life or limb not to be fat

...licit weight bias was assessed by asking people to rate their preferences for thin and fat people, and the degree to which they believe that fat people are lazier than thin people. The researchers found that people of all weight categories exhibited a significant implicit anti-fat bias. Thinner people he...

Tyrannosaur survivorship -- tough times for teens

...lived until the age of two, he enjoyed a low death rate until the teenage years when mortality increased. In 1910, a collecting party from the American Museum of Natural History floated down Alberta's Red Deer River. Led by Barnum Brown, they excavated skeletons of nine individuals of Albertosaurus sarc...

Global warming may warrant new approaches to ecosystem restoration

...s restoring environments undergoing the most rapid rate of change in the earth's history. This global climate change is likely to have important regional consequences for biota and ecosystems. Ecological restoration, including reafforestation and rehabilitation of degraded land, may be a common resp...

HIV-1's high virulence might be an accident of evolution

...ong HIV-2 strains might explain differences in the rate of progression to disease in infected humans. ...

New flood-tolerant rice offers relief for world's poorest farmers

...w long the plantsare submerged, water temperature, rate of nitrogen fertilizer use andother environmental factors. Annual crop loss has been estimated atmore than $1 billion. "For half a century, researchers have been trying to introducesubmergence tolerance into the commonly grown rice varieties throug...

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