Prehistoric NW Indians hunted fur seals of sustainable basis
...ation levels over time. Seal teeth contain growth rings similar to tree rings that scientists can count. The age of an animal also can be estimated by the size of its mandible. ...Coral layers good proxy for Atlantic climate cycles
Tree rings may tell how old a tree is, but the rings or annual bands in some skeletal coral may tell not only the age of the animal, but also something o...Reconstructing salmon populations
...in certain species, it seemed possible to use tree rings to estimate how many salmon returned to a river in...ake and Naiman could not find evidence in the tree rings of a relationship between the pacific climate pattern and salmon populations or determine historical...Science picks leads, feeds and story seeds (October 2002 edition)
...any other natural recorder of climate such as tree rings or sediment layers. The laboratory is jointly funded and operated by the U.S. Geological Survey (USGS) and the National Science Foundation (NSF). Learn more at: http://nicl.usgs.gov/index.html . Jon Campbell ( joncampbell@usgs.gov ) 703-648-4460 ...Laboratory study explains clinical promise of anti-angiogenesis cancer drug
...two in vitro, or cell-culture, approaches. In one, rings cut from the aortas of rats (a kind of tissue that's likely to form new blood vessels) were bathed in a culture of inflammatory breast cancer cells. In the other, the researchers inserted breast cell and breast cancer cell nuclei with a genetic sequ......odilatory responses within the rat thoracic artery rings in the four and five month treated spontaneously hypertensive rats. Linoleic acid administration seems to significantly decrease the systolic blood pressures of SHRs at three and six months. The concurrent ingestion of linoleic acid seemed to be in...National Institutes of Health green lights additional research into new breast imaging system
...ble fitted with a special ring housing. Four laser rings encircle and lightly touch the breast. A one-ring prototype has already been through phase-one clinical trials at Greenville Hospital System....Research shows how pollutants affect tree growth
...ioxide concentration of the air in three of the 12 rings is maintained at 560 parts per million -- about 55 percent higher than the background level. Three rings have an ozone concentration 50 percent higher than the background ozone level. And three rings have ...Anthrax spores use failsafe protection system, say U-M scientists
...ene is active respond specifically to the aromatic rings on certain types of amino acids and ribonucleosides....LabNotes -- research highlights from Pacific Northwest National Laboratory
...y, a national user facility located at PNNL. PNNL rings up info security Information security is all the buzz thanks to a new surveillance system designed by researchers at Pacific Northwest National Laboratory. Called Secure Safe, this wireless communications system triggers an alarm if a worker leaves...Study: tree coring seems to be quicker, cheaper method of measuring radiation
...lest use is to learn how old a tree is by counting rings in the resulting core....Science Report: Super-crocodile crawls out of the African Cretaceous
...embedded in the skin), each sporting annual growth rings that the researchers used to estimate the age of a given animal. Thin sections from scutes, taken from a fossil individual that had reached about 80 percent of its estimated adult size, show around 40 growth rings. This may mean that the animals too...Molecular motor packs DNA into viruses at greater than champagne pressures, researchers report
...id Douglas Smith. "We suspect that rotation of the rings may pull the double helical DNA through the portal similar to the way a rotating nut can pull on a bolt." They also hope to determine once and for all whether the virus injects its DNA into cells by mere passive diffusion, or whether, as they suspect......s that form circles or rings. The insides of these rings provide a hydrophobic environment, one that is app... by treating them with cyclodextrins, allowing the rings to absorb the fat-like material. They then exposed these cells to virus particles and cells infected...Pioneering experiments testing effects of greenhouse gases on crops
...our control and four experimental 70-foot-diameter rings currently surround 24 varieties of soybeans. The experimental rings have ABS plastic pipes that deliver at crop level a precisely regulated flow of carbon dioxide, base...Biodiversity increases ecosystems' ability to absorb CO2 and nitrogen
...fifty years from now. In the BioCON study, the six rings were each subdivided into experimental plots measu...fixers. The experimental plots within three of the rings received no additional CO2, while the other three rings were bathed in CO2 that was about fifty perc...Study of poisonous snakes boosts old Batesian principle of mimicry
...nce is that in the coral snake, the red and yellow rings touch, while in the scarlet king snake, a black ba...e fake "snakes" bearing either stripes rather than rings or plain brown skin. "These are very exciting results because they show how very strong natural s...UCSD biologist transform leaves into petals
..." Normal flowers consist of a series of four rings or "whorls." The outermost whorl is made up of sepals, the green leaf-like organ that normally surrounds the flower bud before it opens. Inside the sepals is a ring of petals, then a ring of stamens, the male reproductive structures, and at the cente...Researchers study oldest oak east of the Mississippi
...limatological patterns for Ohio. Studying the tree rings also indicates how adverse weather conditions affe... Scientists date trees by counting the number of rings inside a tree's trunk. They determine climatological and ecological data by examining the size and s......aterial forms on the otolith in a series of growth rings much like those found in trees. When the water is cool, the material accumulates relatively more of the heavier oxygen-18 isotope. By analyzing samples of calcium carbonate taken from individual otolith rings, the researchers can, among other things...