Tag: "covered" at biology news
Indo-Pacific coral reefs disappearing more rapidly than expected
...ied coral cover, a measure of the ocean floor area covered
by living corals. Scientists rely on coral cover a...quality and quantity, similar to measuring an area covered
by tree canopy as a gauge of tropical forest loss. Coral cover declined from 40 percent in the ear...
Cell damage caused by brushing may help keep gums healthy
..., tongue and other surfaces in the oral cavity are covered
with layers of epithelial cells that serve as a natural boundary between what goes in the mouth and the blood supply. As food digests, nutrients and other desirables move across the single layer of epithelial cells lining the gastrointestinal tract t...
Renewable energy wrecks environment
...mately 780,000 square kilometers, would need to be covered
with structures to extract, store, and transport the energy. One hundred windy square meters, a good size for a Manhattan apartment, could power an electric lamp or two, but not the laundry equipment, microwave oven, plasma TV, and computer. New Yo...
Charting ever-changing genomes
...ance genes are under strong positive selection. We covered
both ends of the spectrum and ended up with a top list of no changes and a top list of a lot of changes, explains Borevitz. All the data have been placed in a publicly accessible database and now researchers everywhere can look up their favorite gene...
Increase in creeping vines signals major shift in southern US forests
...d 12 years' worth of data from six plots that each covered
2.5 acres that's about the size of a football field in an old-growth forest in South Carolina's Congaree National Park. They surveyed the plots every four years, beginning in late 1989. That was the same year that Hurricane Hugo struck the southeas...
Microscopic jets, diamonds unlikely on Uranus, and amazing mosquito legs
...thery scales a few microns across that in turn are covered
with nanoscopic ribbing, forming what the physicists have dubbed (in an apparent fit of excessive prefixing) a micronanostructure. So the next time a mosquito lands on your arm, take a moment to ponder its impressive and versatile leg adaptations -- ...
The origin of perennial water-ice at the South Pole of Mars
...kilometres-wide patches of water-ice, and deposits covered
by a thin layer of CO2 ice. The discovery of the ice deposits of the first type confirms the long-standing hypothesis that CO2 acts as a cold-trap for water-ice. But how were the other two types of deposits, not trapped by CO2, accumulated and pre...
Geologists witness unique volcanic mudflow in action in New Zealand
...eleased from Crater Lake. "We found a broad area covered
in a veneer of mud and boulders," said Fagents. "It was an unprecedented opportunity to see the immediate aftermath of such an event. It's particularly motivating for the students who were along to learn first-hand about lahar processes in such a dyn...
Chitin from lobster shell shows great healing and bio-stimulant properties
...imicrobial and healing properties and, as they are covered
in a natural polymer, with a higher degree of bioc...f Military Medicine "Dr. Luis Daz Soto": Agasut-Q, covered
with chitosan (healing properties) and Agasut-QE, covered
with chitosan and streptomycin (healing an...
White blood cells are picky about sugar
...ated with beta-1,6-glucan, but only a few of those covered
in beta-1,3-glucan. Previous studies indicated that blood serum (basically blood minus cells) helps neutrophils recognize their enemies, so Rubin-Bejerano decided to look for clues to their response in this mixture. She identified several proteins ...
Greenland's ancient forests shed light on stability of ice sheet
...ects." The research implies that ancient forests covered
southern Greenland during a period of increased gl...iod. When temperatures fell again, the area became covered
in ice. This ice sheet appears to have remained during the last interglacial period (116,000-130,000...
Fossil DNA illuminates life
...s green. New Danish research has shown that it was covered
in conifer forest and, like southern Sweden today,...ence. Ten percent of the Earths surface has been covered
with ice for thousands of years. No one knows what lies beneath the kilometre-deep icecaps. These ar...
Weizmann scientists discover a new line of communication between nervous system cells
...and or more in length. Often, these extensions are covered
by myelin, which is formed by a group of specialized cells called glia. Glial cells revolve around the axon, laying down the myelin sheath in segments, leaving small nodes of exposed nerve in between. More than just protection for the delicate axons,...
Making new teeth
...acteristic asymmetry of rodent incisors, which are covered
by enamel only on their labial (front) side. Subtle variations in this or related regulatory networks may explain the different regenerative capacities and asymmetric development of various organs and animal species....
Human ancestors learned to walk upright in the trees, say experts
... million years ago the tropical forests which once covered
East Africa began to break up, and although the forest sometimes grew back temporarily, eventually trees became separated and further apart, preventing our ape ancestors from swinging from one tree to the next. This forced them to go down to the gro...
Nobel laureate James Watson receives personal genome in ceremony at Baylor College of Medicine
...or providing the data, writing a consent form that covered
all the risks and ethical issues involved and obtaining research approvals from BCM boards. BCMs strength in genetics, diagnostics and genomics made it a logical partner in the project. For example, BCM has developed gene chips that can evaluate DN...
Some forest birds can survive in agricultural countryside with limited habitat conservation
...ed locations. "Remnant trees-individual trees-only covered
1.4 percent of the landscape, but some of the birds spent 25 to 30 percent of their time in these few trees," Sekercioglu explained. Similarly, some birds spent up to half their time in riparian corridors, which cover only 4.6 percent of the area. ...
Digestive Disease Week 2007 spotlights breakthrough research in digestive health
...he GI arena. Some of the many issues that will be covered
include current diagnostic and therapeutic approaches to digestive cancers, liver disease, hepatitis treatments, bowel disease, capsule endoscopy, controversies surrounding colorectal cancer, and advances in surgical gastroenterology. Press release...
Investigating coral reefs to help understand past and future climate change
...rstly, they are away from the regions of the world covered
by ice during the last ice age. Secondly, the core sites are located in the tropical pacific, a crucial point of the globe where many climatic anomalies are born e.g. El Nino. In addition, the two sites are located in zones which are tectonically qui...
Scientists identify prion's infectious secret
...in Lindquists lab, used peptide arraysglass slides covered
with thousands of tiny protein fragments. Traditio...ing and amyloid formation in real time. Tessier covered
the array with peptides from bakers yeast and then added prion protein to the array, also from the s...
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