Tag: "currents" at biology news
Biomedical engineers at case develop first sliver-sized sensor to monitor glucose levels
... device also is advantageous because no electrical currents
are going through the body. Gratzl says lab testing and in vivo testing of the sensor in laboratory animals has been going well. He also reports the sliver sensor could be ready for human testing within six months. "So far, the sensor is performing ...
Large-scale forces shape local ocean life, global study shows
...es variation. These large-scale influences include currents
that disperse larvae across hundreds of miles or the creation of new species caused by geological upheaval and biotic isolation millions of years ago. Global warming and pollution are other regional forces that can impact local diversity. "Th...
Delays in cutting greenhouse gasses could harm environment
...t many more ecosystems as well as the global ocean currents
and ice sheets. "The bottom line is that people and their governments ought to develop a sense of how much warming they think is too much," said Oppenheimer. "Then appropriate limits on carbon dioxide should be set and countries ought to move promptl...
Tips from the Journals of the American Society for Microbiology
...nst Bacteria on Stainless Steel Implants Electric currents
may help prevent the growth of harmful bacteria fr...s examined whether or not electric currents(direct currents
and block currents) would be effective at causing aStaphylococcus epidermidis biofilm to detach from...
Invasive sea squirt alive and well on Georges Bank
...g which time they can be spread by tidal and storm currents
to form new colonies. By contrast, fragments of colonies are long-lived. Controlled experiments in Cape Cod waters by USGS and Woods Hole Oceanographic Institution scientists have shown that small pieces removed from Didemnum colonies increase dram...
Argo robotic instrument network now covers most of the globe
...vations about the area's ocean circulation and how currents
have become stronger since last measured by ship-b...uments surface to record temperature, salinity and currents
and to relay the information to satellites. Within hours the information is transmitted to the Globa...
Strange ocean wave patterns raise questions about beach erosion
...e long known that the surf contains many different currents
that interact to affect how sand washes away from ...isingly intricate system of patterns, with surface currents
not always in sync with the bottom flow. As Lippmann reported his team's early results Monday at the...
B-15A iceberg's close encounter monitored by Envisat
...om its present stalled location is for the surface currents
to turn it into the wind, combined with help from ...cMurdo Sound, where its presence has blocked ocean currents
and led to a build-up of sea ice. This has led to turn to resupply difficulties for the United State...
Improved recipe for magnetic brain stimulation
...sease. Such magnetic fields induce tiny electrical currents
inside the skull that alter the activity of neural pathways. While TMS offers the advantages of relative safety and noninvasiveness, the results of its use in both research and treatment have been disappointing. In human studies, neurological effects...
Physics team puts new twist on spin hall effect
...ty of generating magnetization without circulating currents
has great implications in many areas, most notably the design of information processing and storage devices. "Obviously we are only at the beginning of this journey of discovery," Sinova explains. "As you gather more facts, the truth tends to reveal ...
Coastal dead zones may lead to ecosystem-based fisheries management
... implicated in fish kills when wind conditions and currents
conspire to trap the fish on the bottom in a way that makes it hard for them to escape the low-oxygen waters, he added. In the Gulf, "to date no one has been able to make a link between the dead zone and the production of valuable fisheries," Crowder...
El Nino forecasting could aid fisheries management, disease control, marine species protection
... Nino gets its name from periodic changes in ocean currents
that disrupt anchovy fishing off Peru around Christmastime. This worldwide alteration of the normal monsoon cycle changes wind and ocean temperature patterns in ways that lead to flooding in parts of the Americas, droughts in Australia , Southeast As...
Antarctic ice shelf retreats happened before
...ears. The retreat coincided with a shift in ocean currents
that occurred after a long period of warmth. Whil...s some of the first evidence that a shift in ocean currents
can actually destroy ice shelves. In this case it's possible that a preceding warm period may have p...
Octopuses occasionally stroll around on two arms, UC Berkeley biologists report
...rkeling over five years, is that in Indonesia, the currents
are too strong for such behavior. Both Huffard and Full are interested in how these octopuses learned their unusual form of bipedal locomotion. Recent articles shed light on this. Israeli scientists have reported that octopus arms execute incredibly ...
The petroleum umbrella
... from the rig. This might due to the fact that the currents
displace the "umbrella" from the platform axis at the ocean bottom. Anyway, the investigators say the research has to be confirmed in order to draw definitive conclusions. Above all, further parameters have to be taken into account and monitoring ove...
Ophthalmologists and physicists team up to design 'bionic eye'
...as electrodes recessed into pores, which localizes currents
and makes stimulation selective, perhaps allowing researchers to stimulate single cells. Huie, a cell biologist and histologist, implants the chips in rats using a unique tool he and others developed. So far his short-term rat studies show no rejecti...
Satellite images give a better picture of sediment transport
...ly the accumulation of metals in marine organisms, currents
responsible for dispersing materials brought by th...earchers use a numerical model that reproduces the currents
and material transport that occur, taking into account the constraints exerted by the wind field and...
An (ecological) origin of species for tropical reef fish
...h species on reefs in an open undersea world where currents
constantly stir the waters, washing in fish or their larvae from afar, a world without well-defined geographical barriers? Rocha et al. took a close look at the genetics of one group of Western Atlantic tropical reef fishes (wrasses, genus Halichoer...
Carbon dioxide role in past climate revealed
... scientists suggest that they were caused by ocean currents
(like the Gulf Stream) moving greater amounts of warm water from the tropics to the polar regions. Others speculate that increased levels of CO2 in the atmosphere initiated warming all over the planet. We used the latest supercomputing technology c...
Unconventional brain circuits offer clues to insomnia-obesity connection
...e an "unorthodox" organization in which excitatory currents
exert control on nerve cell bodies with minimal inhibitory inputs to filter them. Overnight food deprivation promoted the formation of more excitatory inputs. Those new inputs were reversed upon refeeding, they reported, an indication of the extreme ...
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