What we can learn from the biggest extinction in the history of Earth
...e formed on top of deeper, older ones. Since then, plate tectonics have turned these rocks on their side. Now, Payne and his colleagues can walk back in time across the formerly horizontal layers. Marine fossil beds such as these offer two advantages for someone studying broad patterns in the history of ...Argonne wins three R&D 100 awards for innovative technologies
...re images, doctors can use a glass-ceramic imaging plate which then can be fed into a computer and digitized. The Ultra-High Resolution Mammography System offers several notable improvements over common x-ray films and scintillating screens, including reusability, wide dynamic range and direct digitizati...Geisinger scientist seeks cure for Lou Gehrig's disease, creating device to find treatment
...dents have developed a working prototype screening plate that allows scientists to quickly expose zebrafish to ALS and mix chemicals together. What once took weeks or months to screen thousands of potential cure-carrying chemical solutions may soon take days, and with far fewer research staff involved. ...Throwing motion in young baseball players may actually protect shoulder
...beyond adaptation can lead to pain and even growth plate injuries....TU Delft tracks the influence of a cancer inhibitor on a single DNA molecule
...y they fixed a single DNA molecule between a glass plate and a magnetic sphere. With the help of two magnets they could both pull and twist the DNA molecule. When they added TopoIB to a twisted piece of DNA, they saw that the loops were slowly removed. What is exceptional is that the action of one TopoIB ...A faster way to recover from chemotherapy and marrow transplant
...nt chemical five embryos to a well, 48 wells to a plate then checking each embryo 24 hours later to monitor its development and count its blood stem cells. The screen identified 82 chemicals that markedly increased or decreased gene activity. Of these, 10 turned out to affect the prostaglandin pathway:...Bacteria show promise in fending off global amphibian killer
...l testing," say Harris. "Just because on the Petri plate you find a species of bacteria that is anti-chytrid doesn't mean it's going to be anti-chytrid on the amphibian. So we're going to have to do some tests to make sure which ones are actually most affective on the organism. But we did find one." Even...Revelle family endows UC San Diego chair honoring Roger Revelle
... modification, oceanographic exploration presaging plate tectonics, and the biological effects of radiation in the marine environment, and studies of human population growth and global food supplies." He was among the most sought-after speakers on science and public policy and was a prolific author with ...2007 Joint Assembly in Acapulco -- press conference schedule
...em (GPS) receivers as tools for directly measuring plate tectonics. Using networks of GPS receivers that routinely gauge deformation in plate boundary zones around the world, scientists find that plates don't just creep along at a steady pace...Scripps research team sheds light on long-sought cold sensation gene
...id not receive any acute pain relief from the cold plate suggesting that cold activation of TRPM8 can mediate some of the analgesic effects of cold. Just how the same sensation can be interpreted as unpleasant under certain circumstances and pleasant in others is still not clear, but is a question the gro...Volcanic eruptions, ancient global warming linked
...ace," Duncan said. "It was like lifting a lid. The plate came apart and gave birth to the North Atlantic Ocean." The link from the volcanism to the warming period came through correlations with the marine fossil record. Dramatic changes in the carbon-isotopic composition of the ocean, corroded plankton s...Volcanic plumbing dictates development of deep-sea hydrothermal vents
...s may have altered long-held assumptions involving plate tectonics on the ocean floor. Reporting in the M...rotated beneath the East Pacific Rise, causing the plate boundary to change orientation with time. Secondly, they argue that deep-sea hydrothermal vents freq...First direct electric link between neurons and light-sensitive nanoparticle films created
...e of Nano Letters. The process starts with a glass plate and then builds a layer-by-layer sandwich of two kinds of ultra-thin films, one made of mercury-tellurium nanoparticles and another of a positively charged polymer called PDDA. The scientists then added a layer of ordinary clay and a cell-friendly co...AGU Journal highlights -- February 23, 2007
...ncy earthquakes are generated by shear slip on the plate interface Deep, non-volcanic low-frequency trem...sent shear slip on a low angle thrust fault at the plate interface that dips to the northwest. The authors suggest that deep tremor is generated directly by ...New analyses reinforce efficacy of Remicade in treatment of severe psoriasis
...cluding pitting, leukonychia (discoloration), nail plate crumbling, red spots in the lunula (crescent-shaped area at bottom of nail), onycholysis (separation of nail from nail bed), nail bed hyperkeratosis (thickening of skin), splinter hemorrhages and oil drop discoloration. In September 2006, REMICA...News tips from the Journal of Neuroscience
... to the chamber, and the cranium was attached to a plate that rotated around three axes. The authors made intracellular recordings from RS neurons, and recorded motoneuron responses with surface electrodes. In each plane, RS neurons responded to rotations in one of two opposing directions. Each RS group dr...Two nerve cells in direct contact
...cuit diagram of the tangential cells of the lobula plate in detail. This was based on a multitude of experi...e connections between the cells within one lobular plate and those between the two hemispheres were examined. In the end it turned out that there were two wa...Chemical tests of cell growth enter third dimension
...4-well plates, and are working on their own custom plate design. There is an advantage to using more wells: The eight empty wells supply nutrients to the cells in the middle well, so tests can run for up to two weeks without researchers having to replenish the growth medium. "If you replenish the medium,...The sweet science: Viruses switch grip to gain upper hand
...osed 189 glycans mounted on a 3-by- 5-inch plastic plate to dangerous MVMi, harmless MVMp and three potentially dangerous, mutant strains of MVMp. Scientists found MVMp proteins stuck to the same three glycans on the plate. However, one of the mutant MVMp viruses also bound to an additional glycan - on...... Roelink and Meyer added doses of BMP to a Petri plate containing nerve tissue from early chick embryos. As with fruit flies, they had to hold constant the concentration of another protein involved in dorsal-ventral patterning (in this case Hedgehog rather than Dorsal). The neural identity genes in chick...