Tag: "currents" at biology news
Catastrophic draining of huge lakes tied to ancient global cooling event
...fluxes of freshwater can disrupt heat transport in currents
flowingfrom the tropics to temperate regions. ...he Canadian Museum of Nature. The surface currents
of the Atlantic act much like conveyor belts,carrying salty, warm water from the tropics to the temp...
UNC-CH chemists develop better gene mutation detection method
... measurement of different but verysmall electrical currents
generated when guanine is paired with its correct DNAchemical partner versus an incorrect chemical partner." The incorrect chemical is a single nucleotide polymorphism mutation orSNP, he said. With the new technique, he and Ropp can detect sp...
USGS finds elevated levels of organochlorine pesticides in Aleutian bald eagles
... be transported long distances on air and sea currents
and affect wildlife populations in remote and pris...o be traveling through oceanic or atmospheric currents
to regions believed to be at little risk from such contamination." The role of seabi...
The wonderful world of waves
...and theway in which they interact with the bottom, currents
and otherwaves. By understanding individual wave components, researchers will be able tobetter predict when waves will form and how severe they will be.Potential benefits of this research include improvements in the safety ofnavigation at sea; the sa...
Reversible bone shrinkage documented in Galapagos iguanas
...he islands normally experience cold, nutrient-rich currents
from both the west and south. During El Niño years, however, warm currents
and heavy rains raise water temperatures. Less digestible brown algae replaces the iguanas pre...
Millennium and Wyeth-Ayerst announce the discovery of key potassium ion channel modulating proteins
...he paper. "KChIPs may modulate specific potassium currents
and therefore also regulate the excitability of key neurons in the brain. This discovery may prove important to understanding the molecular basis of a wide range of central nervous system diseases." "The discovery and publication of key potassium ...
UCSD study of uncoordinated fruit flies provides molecular clues to hearing problems in humans
... itself. He found them by measuring the electrical currents
of their mechanoreceptor neurons when the hair bristles of the cells were deflected slightly, an action that in normal insects produces a small electrical current. The cells are so sensitive that a movement that deflects the bristles only a small fra...
Studies of clumsy flies yield molecule important in balance, hearing
...s either lacked the transduction current or showed currents
that indicated rapid adaptation to mechanical stimuli. "We knew that these two phenotypes had to occur in the same gene, so it seemed very likely that this gene was critically involved in the transduction process," said Walker. When the scientists ...
...ave built a 0.6 volt biofuel cell that can deliver currents
of up to 17 milliamperes. Bacteria normally break down glucose to generate adenosine triphosphate -- the main energy source for cells. This involves a flow of electrons, which the researchers have tapped into by adding a chemical called neutral re...
Pay attention to potassium channels! First steps in the molecular identification of SK channels and their role in neuronal signal encoding.
...ork of correlation between cloned channels, native currents
and their function is allowing the first steps to be taken....
Dogs have a nose for it
...t, the researchers obtained images showing the air currents
produced by the noses of the sniffing dogs. They found that a dog's astounding olfactory success comes partly from its ability to divert exhaled air away from a target scent. When a dog exhales, it moves its nose so that the air is deflected through...
Fish and flies caught in the act of speciation, Science researchers report
...wer bodies that allow them to cut through stronger currents
than in the lake beach. Recently introduced populations of organisms, in different environments, offer an opportunity to study the processes of rapid speciation in nature, because much of the observable reproductive isolation can arise soon after a p...
UCSF team reveals how the most selective of all cell gatekeepers works -- a 'three-faced' channel vital to most human organs
...ter molecules and ions that provide the electrical currents
of the nervous system. The key molecule that passes through the channel is glycerol, a simple carbohydrate that every cell employs as raw material to build and maintain the cell membrane. Without glycerol, there would be no membrane and, without its ...
Analysis of Martian meteorite using unique magnetic microscope
...living heart in enough detail tomap the electrical currents
that play a critical role in cardiac function.But ...suring the magnetic fields of algae, developmental currents
in embryos, and injury currents
produced by ischemic cardiac tissue, all of which are difficult to d...
Studies may shed light on link between lack of neurons and SIDS
...s of the research - based on studies of electrical currents
in rat brains - have led the scientists to postula...nd colleagues will describe the activity of sodium currents
- electrical streams of ions or group of atoms - involved in neuron communication in the caudal hypo...
December Geology and GSA Today highlights
...e vigorous flow of heat transporting surface ocean currents
such as the Gulf Stream. If future climate warming reduces Northern Hemisphere land and sea ice cover, Europe and the Mediterranean may experience a climatic scenario akin to what occurred 3 million years ago. Estimation of fault propagation dista...
Cold water off Brazil might be causing Argentine penguin nest failures
...ave been several instances in which unusually cold currents
drew the birds farther north than Rio de Janeiro. "What's unusual is that there are so many of them and so many are going ashore. They are young birds, most of them aren't even a year old," Boersma said. "This is such a cold-water event, with so man...
2000 FALL MEETING: updated press conferences, press registration, and other information
...s. Friday, December 15 10:00 AM Global auroral currents
Magnetic field data from the Iridium satellite co... ever continuous, global measurement of electrical currents
that flow between space and Earth's upper atmosphere. These currents
drive the aurora and deposit up...
New method for studying ocean currents to help fight erosion
...a new way to map the ocean currents
that erode beaches, cost c... other near-shore phenomena such as rip currents
and undertow," Lippmann said, referring to the fast-moving ...
The first schizophrenia gene is discovered
...ell membrane and assist transportation of electric currents
along neurons. Mutations in the potassium channel KCNA1, another ion channel which is remotely related to WKL1, cause episodic ataxia, a rare movement disorder lacking psychotic episodes. In the mutated form of WKL1, a leucine amino acid residue is r...
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