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Tag: "flows" at biology news

Researchers examine carbon capture and storage to combat global warming

...aking the oil expand and ''thin out'' such that it flows more easily, Benson said. ''That experience gives us confidence that we know how to drill the wells, push the [carbon dioxide] in and say something about what will happen when it gets down there,'' said Orr. Currently, three industrial-scale pr...

'Short-circuit' found in ocean circulation

...w ocean circulation is working in the current that flows around Antarctica by tracing the path of helium from underwater volcanoes. The details are published in Nature this week. The team, led by Alberto Naveira Garabato of the National Oceanography Centre, Southampton (formerly based at the University of...

Cancer-killing invention also harvests stem cells

...secondary, cancerous growths. As a cancer cell flows along the implanted surface, King's device captures it and delivers an apoptosis signal, a biochemical way of telling the cancer cell to kill itself. Within two days, that cancer cell is dead. Normal cells are left totally unharmed because the devi...

Volcanic eruptions, ancient global warming linked

...de and methane ?from the "out-gassing" of the lava flows and heating of organic-rich sediments in basins al...f magma from below the Earth’s surface. These lava flows can be plainly seen today in Greenland, western Scotland and the Faeroe Islands, where they cooled, ...

Endangered shortnose sturgeon saved in Hudson River

...o have recovered -- and in the Hudson River, which flows through one of the world's largest population centers, New York City. The population of shortnose sturgeon, which lives in large rivers and estuaries along the Atlantic coast of North America, has increased by more than 400 percent in the Hudson Riv...

Mutant gene causes severe kidney disease in infants

...se filtration units in each human kidney. As blood flows through a network of tiny capillaries in the glomerulus, excess water, salts and toxic molecules are removed and flushed out in urine, while important blood proteins like albumin are retained in the bloodstream. If the kidney's filtering units don't ...

New way of tracking muscle damage from radiation

...st agent. "The rate at which the contrast agent flows in and out of a region, or whether it leaks out of the blood vessel, helps us understand whether the blood supply is in poor or good condition," Krasin said. "Changes in T2 measurements may indicate an increase in swelling following radiation therapy...

Fast test for low blood flow in dogs detects early heart trouble

...d with 1.0 meaning a perfect match. Indeed, blood flows ranged from 0.3 milliliters per gram of heart tissue per minute to 8 milliliters per gram per minute. "We think this is a natural evolution of the technology and a significant improvement in our ability to diagnose problems with blood flow," says...

Scientists find new way to manipulate DNA

...e equation they developed can be applied to design flows that break polymers into certain lengths, or to design polymers to withstand certain flows. This could have big implications for industries that rely on polymer coatings, such as shipping or oil. "When the polymers are working their best the frict...

Researchers add to understanding of how brain cells communicate

... strongly blocks the channels of NR1/2A receptors, flows much more easily in NR1/2D receptors. In those rec...iece of cell membrane and measures the charge that flows through one open channel. They were able to use the remarkable precision of the patch clamp to see e...

MIT engineers probe spiders' polymer art

...rong, the researchers discovered, happens while it flows out of the spider's gland, lengthens into a filame...ough the spider's ampullate gland. As the silk gel flows from the gland through an S-shaped, tapered canal to the outside of the spider's body, the long prot...

K-Staters design and build a low-cost remote sensing tool for environmental studies

...d Oceania also collect ecological data, which then flows to FLUXNET central locations, including Oak Ridge National Laboratory, for computer modeling the climate. "Our role is to study the tallgrass prairie ecosystem and how land management impacts that ecosystem. In Kansas, we're interested in how manage...

Research offers new hope for preterm babies

... preterm babies can auto-regulate blood and oxygen flows in the brain. This will greatly assist in caring for these babies, particularly those needing treatment for low blood pressure," Dr Wong said. ...

Precision biochemistry tracks DNA damage in fish

... of fish in the lower Duwamish River. The Duwamish flows through an industrialized section of south Seattle, Wash., and in 2001 a section of the lower river was added to the Environmental Protection Agency's Superfund list because of contaminants including polychlorinated biphenyls (PCBs), polycyclic aroma...

Even when faint, ovary scent draws sperm cells

... liquid into a single chamber. Beyond the chamber, flows are split into three exit streams. Flow rate can be regulated simply by raising or lowering the height of the source medium, in this case a buffer solution. The researchers affixed a microscope and camera to the device and then recorded video of the ...

U of MN uses robotic surgery techniques in cardiac cell therapy research

...a, the main artery through which oxygen-rich blood flows from the heart to the body. Taylor said more research needs to be done to determine which types of cells are most beneficial to infuse into damaged hearts, as well as if the minimally invasive technique can deliver similar results as traditional ope...

Genetically altered mice no longer like cocaine

...tral nervous system. Under normal circumstances it flows into and out of neurons. But cocaine blocks dopamine transporters from taking up dopamine, leaving it outside the cells, which excites the nervous system to the point where a cocaine user feels a high, Gu said. He and his colleagues raised laborato...

The critical importance of mangroves to ocean life

...a tenth of the dissolved organic carbon (DOC) that flows from land to the ocean. Dittmar and his colleagues at several German research institutions analyzed the carbon output from a large mangrove forest in Brazil and suggest that the plants are one of the main sources of dissolved organic matter in the oc...

Weighting cancer drugs to make them hit tumors harder

...motherapy's stay inside tumors is brief because it flows out as rapidly as it entered. In contrast, high molecular weight chemotherapy molecules are too large to be picked up by normal blood vessels. The drugs also remain longer in the tumor because they are not readily reabsorbed into the bloodstream, no...

Blood flow in brain takes a twist, affecting views of Alzheimer's

...t scientists have assumed that the more blood that flows to a particular part of the brain, the more activity on the part of neurons, the nerve cells that send electrical signals that are widely considered to be "brain activity." The assumption that more blood flow equals more active neurons forms the basi...

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