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Tag: "rate" at biology news

Protein folding: Building a strong foundation

...to have co-evolved for optimizing both the folding rate and the stability of proteins." Wittung-Stafshede's group, which specializes in experimental studies related to protein folding, tested the model's predictions against experimental data gathered for several forms of the protein azurin, a copper-con...

Jefferson scientists find high glucose before surgery raises risk of dangerous complications

... blood clots travel to the lungs, after surgery, a rate that is 6.2 times greater than would be expected in the general population. The researchers report their results on October 15, 2006 at the annual meeting of the American Society of Anesthesiologists in Chicago. "These data suggest that if an indiv...

Nano-devices hold promise for early-stage cancer detection

...dramatically. For example, the five-year survival rate of breast cancer patients when a tumor is detected at less than two centimeters in size is 98 per cent. It is only 26 per cent when the tumor is larger than five centimeters. For colorectal cancer, the second leading cause of cancer death, at least...

Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack

... of deaths from smallpox, they also found that the rate of severe illness and death caused by the vaccine ...s for about 90 percent of cases and has a fatality rate of about 30 percent), modified (which occurs in people who have been vaccinated and has a death rate...

HIV exploits competition among T-cells

...een the level of competition among T cells and the rate at which the virus escaped." Deem said one strategy to combat this effect would be to vaccinate against the strains of HIV that will inevitably evolve in the body in a manner that was designed to reduce immunodominance. One such strategy ?polytopic...

Soil nutrition affects carbon sequestration in forests

...izing with nitrogen -- can greatly increase growth rate and wood growth responses to elevated atmospheric CO2." The studies took place at a Free Air Carbon Enrichment (FACE) study established by the U.S. Department of Energy on the Duke Forest in Durham, NC. In FACE studies, groups of trees are circled...

First-time analysis reveals millions of Europeans left at risk from influenza

...d deaths that could be prevented by increasing the rate of vaccination to include all people at risk of in...n the EU-25, which leads to an average vaccination rate of the target population of 35.4% based on current supply constraints As a consequence up to 144...

Pleasure and pain: Study shows brain's 'pleasure chemical' is involved in response to pain too

...n in the volunteers' jaw muscle, and asked them to rate different aspects of how they were feeling, differences emerged in specific sub-areas of the basal ganglia. For example, the more a person rated the pain as causing emotional distress and fear, the more dopamine was released in the area known as the ...

PNAS study reveals why organs fail following massive trauma

...e a federal research priority because the survival rate has not improved in 10 years. Excitement is growing, however, because new evidence suggests that major diseases involving the immune system share some of the same mechanisms and may be cured by manipulating the same molecules. A protein called progra...

Perceived facial similarity in children is an estimate of kin recognition

... In one condition, participants were only asked to rate the facial similarity of each pair of children. In a second condition, participants were asked to classify each pair as sibling or non-siblings. Researchers found that the mean similarity ratings of the first group contained as much information abou...

China's environmental challenges

...le live in China, which is undergoing a remarkable rate of economic growth. At the same time, China's env...of Peking University) note, "China's extraordinary rate of economic development makes it a historically unique, grand-scale socioeconomic and ecological "ex...

Climate change has surprising effect on endangered naked carp

...ecreases drastically to less than 5 percent of its rate in the freshwater river water. "In other words,...ed from an organ which excreted water at a greater rate than salt in river-water, to one which conserved water relative to salt in lake-water," explain the ...

Technology for monitoring fetal oxygen during labor offers no apparent benefit

...ly when there were disturbances in the fetal heart rate during labor. "The results of this study show t...chnology developed earlier, electronic fetal heart rate monitoring, was adopted for use in delivery rooms without prior testing. Although electronic fetal ...

Very low birth weight linked to reduced quality of life in pre-school children

...of four hospitals in northern Taiwan. The survival rate for babies in this weight range is just over 76 per cent in Taiwan. Meanwhile, the control group were children who attended preschools and weighed at least 2500g (five pounds and eight ounces) or more at birth. The mothers of very low birth-weigh...

High levels of blindness in southern Sudan following years of war

...ive years were not included in survey. A very high rate of blindness was found?%. This is more than twice the level that would be expected, given what is known about the prevalence of blindness in other parts of rural Africa. The two most common causes of blindness and low vision were cataract and trachom...

Long-term cancer risk follows stem cell transplant recipients

... for a disease that otherwise has a high mortality rate with non-transplant therapies. While the procedure can be lifesaving, it is associated with serious short-term adverse effects, such as mucostitis, infections, and liver vascular obstruction as well as the potential long-term complication of developi...

Search on for treatment of slow-healing wounds

...ounds contribute to a foot or lower-leg amputation rate 10 to 15 times higher than non-diabetics. Eighty percent of diabetics who underwent amputation for chronic wounds died within five years, according to a Finnish study. The incidence of chronic wounds in the United States has grown. That trend is e...

Contrary to common wisdom, scientist discovers some mammals can smell objects under water

...ve and 10 times per second. That is about the same rate as the sniffing behavior of comparably sized land mammals, like rats and mice. "Rats and mice don't sniff the way we do," Catania said. "They push air 'out-in out-in' in a fashion strikingly similar to what the star-nosed mole is doing, except that i...

Blue eyes -- A clue to paternity

...ighty-eight male and female students were asked to rate facial attractiveness of models on a computer. The pictures were close-ups of young adult faces, unfamiliar to the participants. The eye color of each model was manipulated, so that for each model's face two versions were shown, one with the natura...

Restoring tamoxifen sensitivity in resistant breast cancer cells

...ved that tamoxifen treatment initially reduced the rate of recurrence by nearly 50 percent. Over time, however, patients develop resistance to the drug and tamoxifen loses its effectiveness as a cancer treatment. "Tamoxifen has been extremely important in the management of breast cancer," said NCI Direc...

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