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Tag: "greater" at biology news

Computer scientists unravel 'language of surgery'

...ould enable robotic surgical tools to perform with greater precision. The project, supported by a three-year National Science Foundation grant, has yielded promising early results in modeling suturing work. The researchers performed the suturing with the help of a robotic surgical device, which recorded t...

Sex and the heart: It's not what you think

...hange from previous decades when older men were at greater risk for heart disease. Instead this research show...rease in high-risk HDL cholesterol, but men showed greater improvement. The use of cholesterol-lowering medication increased somewhat more for men. More w...

HIV/AIDS linked to extensively drug resistant TB

...ning the extent and consequences of the problem in greater detail, Friedland said, with operational research focused on quickly determining what kind of infection control practices can practically and feasibly be instituted to reduce the transmission of this lethal form of tuberculosis to others. Friedlan...

Giant insects might reign if only there was more oxygen in the air

...n could be frighteningly large if only there was a greater concentration of oxygen in the air, a new study co... that the tracheae of the larger beetles take up a greater proportion of their bodies, about 20% more, than the increase in their body size would predict, Kais...

A new target for painkillers

...allowing rats with sciatica to tolerate touch with greater pressure. The new study is not McIntosh's first involving chronic pain. As an incoming college freshman working in Olivera's lab in 1979, McIntosh discovered in cone snails the natural form of a drug now used against severe nerve pain. It is Prial...

First biomarker for human sleepiness identified in fruit flies

...ed that the flies have periods of inactivity where greater stimulation is required to rouse them. Like humans, flies deprived of sleep one day will try to make up for the lost time by sleeping more the next day, a phenomenon referred to as increased sleep drive or sleep debt. To identify a marker for slee...

Mayo discovers protein as potential tactic to prevent tumors

... genetic knowledge to sacrifice themselves for the greater good of the organism rather than to pass on errant genetic codes that can lead to disease. Genetic errors that sneak past the cell's quality control check-points can make the cell prone to develop into cancer. How It Happens The Mayo research...

Most important actors in the growth process of neurons identified

...ependent of neuronal activity. This finding brings greater clarity to the axon's growth process - knowledge that constitutes a major step forward in understanding neuronal disorders. Given that this research can raise a lot of questions for patients, we ask you to please refer questions in your report or ...

Genetic study of Neanderthal DNA reveals early split between humans and Neanderthals

...dy suggests that Neanderthal and human genomes are greater than 99.5 percent identical, which leaves less than 0.5 percent of the Neanderthal genome that will attract much attention. Many of the biological differences between modern humans and Neanderthals will be encoded at specific sites, which is why the ...

Successful lung cancer surgery not enough to break nicotine dependence in many smokers

...ious research, the investigators hypothesized that greater nicotine dependence, a younger age, lower income, ...ower level of education would be associated with a greater likelihood of smoking post surgery. But that is not what they saw on two of the four variables. I...

Queen bee promiscuity boosts hive health

... takes more time and energy and puts the queens at greater peril for predator attacks. "Even though just one male provides all the sperm that a queen needs for the rest of her life, queen honeybees go out on mating flights and obtain sperm from a dozen or more males," said lead author Thomas Seeley, Cornel...

Squid-inspired design could mean better handling of underwater vehicles

...nd dock underwater vehicles at low speeds and with greater precision. In addition, the technology - seemingly inspired by the plots of two classic sci-fi films - may soon allow doctors to guide tiny capsules with jet thrusters through the human digestive tract, enabling them to diagnose disease and dispense...

Researchers discover mechanism that determines when detailed memories are retained

...fic frequencies. However, when the stimulation was greater (leading to the higher level of acetylcholine release), the rats also remembered the specific frequencies. "We have always known that acetylcholine plays a major role in learning and memory," Weinberger said. "For example, the major treatments cu...

New dyslexia theory blames 'noise'

...garten or early primary grades, saying they are at greater risk for developing dyslexia. He also cited a Northwestern University study from 2003 that documented negative effects from noise on children with learning deficits. Lu said there is a "lot of evidence" of learning problems from ambient noise....

Altered perception of reward in human cocaine addiction

...aded fashion: the higher the potential reward, the greater the response in the prefrontal cortex. In cocaine-addicted subjects, however, this region did not demonstrate a graded pattern of response to the monetary reward offered. Furthermore, within the cocaine-addicted group, the higher the sensitivity to m...

For crickets, parasitic flies can stop the music

... sing do so far longer, placing themselves at even greater jeopardy of being parasitized by the flies. Brockmann said this may reflect the presence of many more females in the fall, enabling male singers to mate many more times. Also, many male crickets never sing, apparently finding mates by simply walki...

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

...the lungs, after surgery, a rate that is 6.2 times greater than would be expected in the general population. ...ow connections between increased blood sugar and a greater risk of dying or of medical complications for hospital patients in intensive care or cardiac care un...

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

...uarantining infected individuals would take a much greater toll on the community than failing to pre-vaccinate potential cases. To conduct the study, Longini and colleagues created a computer model that calculated the spread of smallpox via aerosol dissemination ?the most likely choice of terrorists ?withi...

Flu shot effective against drifted influenza, nasal spray vaccine less so

...mune, suggested that FluMist offered significantly greater protection than the flu shot. A MedImmune study discussed in October at a Toronto conference also found that FluMist was more successful at initiating antibody response than the traditional shot in young children. Monto and Ohmit will continue...

MIT designs portable 'lab on a chip'

...to achieve similar flow speeds and also provides a greater degree of flow control. The key to boosting energy efficiency is altering the electric field in the channel, Bazant said. Instead of placing electrodes at each end of the channel, as in capillary electro-osmosis, the voltage can be lowered substant...

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