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Tag: "matter" at biology news

A probe, not an echo

...surgical procedures. *Scans can be performed in a matter of a few minutes and because they are ultrasonic, they do not use potentially harmful ionizing radiation. *The system requires a minimum of special pre-scan procedures and appears likely, in clinical use, to be more comfortable for patients than alt...

Young Blood Revives Aging Muscles, Stanford Researchers Find

...age-whether it's muscle, liver, skin or brain-is a matter of the regenerative cell's environment rather than the cells themselves. Rando said that finding the youth-promoting factors in the blood is no small task. "It's as big a fishing expedition as you can possibly imagine," he said. With thousands of pr...

Research shows smoking adds a decade to reproductive age of IVF patients

...2 or more. Older women had lower success rates no matter what was the cause of subfertility, with the live birth rate decreasing by 2% for each additional year of age. "In all subgroups smokers had a lower delivery rate per treatment cycle than non-smokers," Dr Lintsen said. "The live birth rate for smoke...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

... after each one, you'd see a bloom appear within a matter of days." Each bloom was enormous, he said, covering from 19 to 223 square miles (50 to 577 square kilometers) of the gulf and lasting several days. "Sometimes eddies actually pulled the plumes across the gulf, from the mainland side all the way to ...

Genetic therapy reverses nervous system damage in animal model of inherited human disease

...ical improvement, but MRI also revealed that white matter tracks, myelin, in the brain had been largely restored. "As we move toward the clinical use of this therapy in humans, we must develop and utilize non-invasive methods to monitor the regression of the disease following treatment," Vite said. "The ab...

Undesirable expatriates: Preventing the spread of invasive animals

...elf from ordering exotic pets off the Internet, no matter how interesting they might look in the pictures. And vote for politicians that encourage sound port inspection. Because, according to recent Proceedings of the National Academy of Sciences article by Drs. Jonathan M. Jeschke and David L. Strayer, our...

Anammox bacteria produce nitrogen gas in oceans' snackbar

...ia that convert nitrate (via nitrite) with organic matter to nitrogen gas in the absence of oxygen (denitrif...y discovered that anammox bacteria can use organic matter to convert nitrate into nitrite (much better than denitrifying bacteria). This new finding even incr...

White Blood Cell 'Waste Disposal' System Plays Critical Regulatory Role

...ammed cell death pathway called apoptosis within a matter of hours. Dying neutrophils are recognized and ingested by cells in the body tissues called phagocytes. Although the specific mechanisms that regulate the proper ratios of neutrophil production and destruction are not well understood, it is known th...

Human Cells Filmed Instantly Messaging for First Time

...n which 1 billion dry tons of biomass ?any organic matter that is available on a renewable or recurring basis ?would displace 30 percent of the nation's petroleum consumption for transportation. Supplying more than 3 percent of the nation's energy, biomass already has surpassed hydropower as the largest dom...

Growth in biomass could put US on road to energy independence

...n which 1 billion dry tons of biomass ?any organic matter that is available on a renewable or recurring basis ?would displace 30 percent of the nation's petroleum consumption for transportation. Supplying more than 3 percent of the nation's energy, biomass already has surpassed hydropower as the largest dom...

NASA study finds snow melt causes large ocean plant blooms

... waters are not well ventilated. Also when organic matter produced by phytoplankton breaks down and decomposes, more oxygen gets consumed in the process. An increase in phytoplankton could therefore cause oxygen deficiencies in the Arabian Sea to spread, leading to fish mortality. Oxygen-depleted waters al...

Microbial fuel cell: High yield hydrogen source and wastewater cleaner

...ydrogen from any biodegradable, dissolved, organic matter -- human, agricultural or industrial wastewater, for example -- and simultaneously clean the wastewater. "While there is likely insufficient waste biomass to sustain a global hydrogen economy, this form of renewable energy production may help offset...

Supercomputer Dedicated To Bioengineering, Computational Biology Installed

...re sophisticated problems. "It's not always just a matter of computational speed with some of our models -- some are memory limited," said McCulloch. "For example, our models of the propogation of an electrical impulse thorough the heart wall require us to generate matricies with millions of individual cell...

South America's vast pantanal wetland may become next everglades, UNU experts warn

...rbon held in terrestrial sinks, most of it organic matter in soil which can be released when the soil is disturbed, for example through wetlands drainage and destruction. Already, changes in land use and land cover account for about 1.6 gigatonnes (17%) of annual human-caused carbon emissions, the analysis...

White blood cell waste disposal system plays critical regulatory role

...ammed cell death pathway called apoptosis within a matter of hours. Dying neutrophils are recognized and ingested by cells in the body tissues called phagocytes. Although the specific mechanisms that regulate the proper ratios of neutrophil production and destruction are not well understood, it is known th...

Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

...e northern hemisphere," said Kingsley. "It doesn't matter where we look, on the Pacific coast, the East coast, in Iceland, everywhere. When these fish evolve this low-armored state they are using the same genetic mechanism. It's happening over and over again. It makes them more fit in all these different lo...

Researchers trace evolution to relatively simple genetic changes

...e northern hemisphere," said Kingsley. "It doesn't matter where we look, on the Pacific coast, the East coast, in Iceland, everywhere. When these fish evolve this low-armored state they are using the same genetic mechanism. It's happening over and over again. It makes them more fit in all these different lo...

Poor prenatal nutrition permanently damages function of insulin-producing cells in the pancreas

...rete a limited amount of insulin later in life, no matter what signal they got from glucose," Dr. Patti said. "The impairment was permanent. It couldn't be corrected even when the body caught up to normal weight." Because studies of mice generally are good predictors of human biology, the Joslin study has ...

Bioartificial kidney under study at MCG

...nstitutes of Health study to do just that. But no matter how long dialysis is given, it only replicates a fraction of the work of the kidneys, which are involved in diverse functions ranging from regulating vitamin D to modulating the immune response. "Existing forms of dialysis have only replaced the abil...

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