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Math that powers spam filters used to understand how brain learns to move our muscles

... “opinion,” that measures a “learner’s” individual degree of belief in a particular outcome when that outcome is uncertain. The idea as applied to the workings of a brain is that each brain uses what it already knows to “predict” or “believe” that something new will happen, then uses that information to hel...

The insect vector always bites twice

...g infected people is therefore associated with the degree of exposure of the subject to insect vector bites....ody response can represent a good indicator of the degree of exposure of humans to bites, which could in the long term allow improved assessment of the risk o...

Dirty snow may warm Arctic as much as greenhouse gases

... the past 200 years, the Earth has warmed about .8 degree Celsius. Zender, graduate student Mark Flanner, and their colleagues calculated that dirty snow caused the Earth’s temperature to rise .1 to .15 degree, or up to 19 percent of the total warming. In the past two centuries, the Arctic has warmed abo...

Studies to find better ways to preserve human eggs, ovarian tissue under way

...l-rate freezer that takes down the temperature one degree centigrade per minute so it drops the temperature very, very slowly,” says Dr. Song. Slow cooling works well for simple tissue, such as sperm or even embryos, and for blood. “In blood, for example, conventional cryopreservation freezes the liquid...

New study finds genetically engineered crops could play a role in sustainable agriculture

...nd worms" The answer is that it depends to a large degree upon the type of comparison one makes. When Bt crops are compared to crops sprayed with insecticides, the Bt crops come out looking quite good. But when Bt crops are compared to crops without insecticides, there are reductions of certain animal grou...

Research shows cord blood comparable to matched bone marrow

...red by leukemia-free survival rates, providing the degree of mismatch was limited and the number of cord blood cells available was sufficient. Furthermore, study participants who received matched cord blood had a 20 percent higher survival rate than matched bone marrow recipients, though the number of matc...

Breakthrough developments in rheumatoid arthritis reported

...orado are now analyzing the genes from 2,500 first degree relatives of rheumatoid arthritis patients and testing CCP levels to see whether there is a way to predict, based on these measurements, who will go on to develop rheumatoid arthritis. Ultimately, understanding how the genes work to confer illne...

Potent possibilities for parasite attack

...cture and sequence of the Leishmania genomes - the degree of similarity between these species was unexpected," explained Professor Deborah Smith, collaborator on this project at the University of York. "Perhaps only a few parasite genes are important in determining which type of disease develops after infec...

Male circumcision overstated as prevention tool against AIDS

...stitutes in a country is the key to explaining the degree to which AIDS has infected the general population. Prostitute communities are typically very highly infected with the virus themselves, and because of the large number of sex partners they have each year, can act as an engine driving infection rates ...

Modified mushrooms may yield human drugs

... have the partner gene," Dr. Romaine added. The degree of gene expression ultimately depends on where exactly the imported gene lands in the mushroom chromosome, among a complexity of other factors, but researchers point out that the process of producing biopharmaceuticals is potentially faster and cheap...

Researchers use MRI to predict recovery after spinal cord injury

...ly performed on patients with SCI to determine the degree of neurological damage, as well as a possible prognosis. MRI findings may include cord hemorrhage, swelling, soft tissue and ligament injury, blood clots or herniated discs. Dr. Fehlings’ study included 100 patients with traumatic cervical SCI. Th...

Climate change impacts stream life

...ould decline by as much as 21 per cent for every 1 degree Celsius rise in temperature. Dr Durance added "The numbers of species in the streams we examined might also fall by 12-25 per cent if trends continue as expected over the next 50 years". ...

Students invent protective pouch to enhance cell therapy

...n the university’s biomedical engineering master’s degree program. ...

Diminishing dinosaur steps saved by laser and laptop

...motion, worked on the Fumanya tracks for his MPhil degree project. Karl said: "Due to the fragile environment and the sensitivity of the site we were not permitted direct contact and therefore all measurements had to taken remotely. Dr Manning added: "Laser scanning allowed the rapid, high resolution,...

Study shows dramatic increase in Caesarean sections

...tive caesarean delivery," Dr Pennell said. "The degree to which maternal request accounts for the increase in caesarean sections isn't known, but similar studies in the UK have shown that maternal request is now the fifth most common reason for performing a caesarean section." Dr Pennell said that des...

Newly identified mechanism for silencing genes points to possible anti-cancer strategies

...eginning to appreciate, however, the extraordinary degree of control exercised over every step of the production process. Only about 10 percent of human genes, for example, are actively producing proteins in a given cell at a given time. The remaining 90 percent are silenced by a various mechanisms that a...

Fused nasal bones helped tyrannosaurids dismember prey

...split second, a T. rex could toss its head at a 45 degree angle and throw a 50kg person five metres in the air. And that's with conservative estimates of the creature's muscle force, says Snively. "We kept the muscle numbers down because we thought they couldn't possibly be that powerful, but Tyrrell museu...

Paper challenges 1491 Amazonian population theories

... charcoal and thus is able to conclude with a high degree of accuracy the extent of human settlement in that region. "What we do say is that when you start to look away from known settlements, you may see very long-term local use," he says. "These people didn't stray very far from home, or from local bod...

Glucose triggers brain cell death in rats after hypoglycemic coma

...etely unknown." The authors also found that the degree of oxidative stress was directly dependent upon the amount of glucose given. "We think that this stems from a known link between glucose and NADPH oxidase," Swanson says. "Glucose is a precursor for NADPH, which in turn is used by NADPH oxidase in ge...

Fascinating spider silk

...a structural change in the protein, but rather the degree of oligomerization that is crucial for thread formation," concludes Scheibel. The silk solution in the spider's silk gland has a very high protein concentration. This solution also contains a high concentration of sodium chloride, which suppresses...

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