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Tag: "pressure" at biology news

New study aims to stop sepsis in its tracks

... believes things will go well. Only when the blood pressure drops or is no longer responsive to intravenous fluids does the team realize it is suddenly behind the eight ball. By then, the patient is quickly spiraling into multisystem organ failure. Starting resuscitation at this point may already be too late....

ASU researchers test antibacterial effects of healing clays

...urs. They form when the chemistry, temperature and pressure conditions are right. In the case of the two French clays we are testing, their chemical structures are almost identical, but the different trace element chemistry of the interlayer records an older geologic condition, from a time when the antimicrob...

Mechanical 'artificial hearts' can remove need for heart transplant by returning heart to normal

...n. "This therapy has the potential to ease the pressure on the waiting list while also offering patients a better alternative to a donor heart ?their own, healthy heart," she added. Professor Sir Magdi Yacoub, from the Heart Science Centre at Imperial and the Royal Brompton and Harefield NHS Trust, s...

Stress hormones may play new role in speeding up cancer growth

...as beta-blockers which lead to a lowering of blood pressure levels. Glaser and Yang wanted to see how these same drugs affected these tumor cells. They added propanol, a beta-blocker, to the tumor cells and then exposed them to both norepinepherine and epinephrine. With the drug present, the levels of MMP-...

Researchers show that veins stiffen as we age

...na Hospital, which included a lipid profile, blood pressure monitoring, electrocardiogram and several other te...graphed. The consistently lower blood volume under pressure pointed to the less springy veins of the older participants. Graphic courtesy of the American Medi...

Nonvenomous Asian snakes 'borrow' defensive poison from toxic toads

...ople suffering from hypertension and related blood pressure disorders. The researchers made their case by testing Rhabdophis tigrinus on several Japanese islands, one with a large population of the toxic toads and another with none, and compared them with snakes from the Japanese island of Honshu, where to...

Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply

... of great sharks by substantially reducing fishing pressure on all of these species and enforcing bans on shark finning both in national waters and on the high seas." "Maintaining the populations of top predators is critical for sustaining healthy oceanic ecosystems," says Peterson. "Despite the vastness...

Biologists call for better choice of model organisms in 'evo-devo'

...s is important in this field, especially given the pressure on available funding sources. "We encourage evo-devo workers to communicate with funding agents so that the limited resources available will not be disproportionately channelled to the ‘big six? which, while important, cannot illuminate all evo-d...

With cellulosic ethanol, there is no food vs. fuel debate according to MSU scientist

...o will increase dramatically. "This will reduce pressure on our land resources," said Dale, who also is associate director of the MSU Office of Biobased Technologies. "We'll be able to get more raw material out of one acre of land." Dale said that many of these energy crops will be grown on land that is...

A revolution in the monitoring of unborn babies

...own homes it is hoped the device could relieve the pressure on in-patient stays and reduce hospital costs. As well as spotting potential complications the new monitor can be used to provide reassurance and mother-baby bonding. ...

Research to spotlight carbon monoxide benefits

... The slow release of carbon monoxide reduces blood pressure for someone who has angina, for instance. "This work is very much in its infancy. We became involved because some of our organometallic compounds, which carry carbon monoxide, were showing potential to release carbon monoxide slowly in a controlle...

Biologically inspired sensors can augment sonar, vision system in submarines

...ical counterpart. "By detecting changes in water pressure and movement, the device can supplement sonar and vision systems in submarines and underwater robots," said Liu, who also is affiliated with the university’s Beckman Institute for Advanced Science and Technology, the Institute for Genomic Biology, an...

Meeting the ethanol challenge: Scientists use supercomputer to target cellulose bottleneck

...ource is to produce ethanol from cellulose, easing pressure on foo d supplies and yielding greater greenhouse gas benefits. The fibrous part that makes up the bulk of plants, cellulose is the cheapest and most abundant plant material, from corn stalks left after harvest to wood chips from papermills and fast-...

Microfossils unravel climate history of tropical Africa

...can be explained by the strong relationship of air pressure to temperature. When the temperature of the sea surface is higher than that of the continent, stronger offshore winds reduce the flow of moist sea air onto the African continent. This occurred during the last ice age and, as a consequence, the land c...

Scientists map air pollution using corn grown in US fields

....S. Senate. "Many nations are facing increasing pressure to monitor and regulate the release of carbon dioxide from fossil fuel sources to limit greenhouse gas warming," said James Randerson, associate professor of Earth system science at UCI and co-author of the study. "This method can help determine how ...

Microfluidic chip helps solve cellular mating puzzle

...n hair. Within the chip, computer-controlled fluid pressure and microscopic valves allow the researchers to isolate and conduct experiments on extremely small clusters of cells. "The level of control we can achieve on the conditions affecting just a few cells is unbelievable," Levchenko said. "This is far bey...

Conceptualizing a cyborg

...tic, while sensory stimuli, such as temperature or pressure provides feedback to adapt the movements. The central feature of the proposed interface is the ability to create transplantable living nervous tissue already coupled to electrodes. Like an extension cord, of sorts, the non-electrode end of the l...

A steady, high-fat diet is bad, but the news gets worse

...responses to stress are associated with high blood pressure in the future. So when we learn that even a single...ocative, held an arm in ice water, and had a blood pressure cuff inflated around an arm, which gradually causes a dull ache. "Regardless of the task, we...

Tiny clue reveals new path toward heart disease

... While risk factors such as smoking, high blood pressure and high cholesterol are known to contribute to coronary artery disease, little is known about genes that render an individual susceptible to developing the disease, said study co-investigator Elizabeth R. Hauser, Ph.D., an associate professor of med...

Twenty of world's 162 grouper species threatened with extinction

...markets, but they face heavy and unmanaged fishing pressure that is rapidly reducing their populations. In North and South America, heavy fishing of grouper for the chilled fish markets also poses a significant threat. The Nassau grouper, once one of the most commonly landed groupers in the islands of the ...

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