UC Davis Researchers Get First Look At A Working Cellular Motor
...kly andmethodically towed large molecules from one end of a roundworm cilium to theother. On single-celled animals, the short, hairlike cilia act like oars topropel the animal through watery environments; inside multi-celled animals likeworms, cilia move fluids around and act as sensing centers. In this ...New Biochemical Technology Ready To Retrieve, Purify Heaviest Crude Oil
...xtracting it from the ground and purifying it into end products. Crude oil'sphysical properties, such as viscosity, and its chemical impurities affect thecost of recovery and refining, and the amount of waste produced in processing. New air-pollution regulations have tightened the restrictions on the am...Earliest Modern Tree Lived 360-345 Million Years Ago
...became extinct within a shortperiod of time at the end of the Devonian age. Before they left, though, Archaeopteris trees changed the world, Schecklerreports. The earth's atmosphere was changing rapidly, going from perhaps 10 percent to 1percent CO2 and from about 5 percent to 20 percent oxygen over a ....... When the AF-1 domain was moved down to the other end of the molecule inthese receptors, then the need for ligands may have been more pressing."The researchers' next step is to try to determine at a structure level if thisligand-binding domain is reconfigured, bypassing the need for a ligand. "Phosphory......eing that cells that would normally develop at the end of a limb grow atthe base of the limb, and cells i...nors thesis project. The two reports do not put an end to scientists' concerns about amphibians,however. Other kinds of frog deformities are being reported...Immune Response To Hepatitis B Spares Liver Cells
...ng T cells bring hepatitis B virusinfections to an end by destroying infected liver cells. The current study,however, points to a noncytolytic process that targets the virus' ability toreproduce and leaves the liver relatively unscathed. Luca G. Guidotti, D.V.M., Ph.D., and Francis V. Chisari, M.D., of ...1999 Spring Meeting: Information For Media Representatives
... June 1, 6:00 P.M. - Room 110 Relax a while at the end of the first busy day of Spring Meeting, see who e...are encouraged to pre-register via the form at the end of thismessage. It may be returned by e-mail, fax, or mail. While supplies last,pre-registrants will...Endangered Species' Recovery Plans Face Comprehensive Scientific Review
... Biology, which is directing the review. As of the end of March, 519 recovery plans covering 357 animal and 568 plantspecies had been filed since the Endangered Species Act was passed by Congressin 1973, according to figures from the U.S. Fish and Wildlife Service, whichadministers the act. More than 400...Research Bears Fruit, And Patents
...till getting used to the unusual color," but bythe end of last year's season he was beginning to get requests for specialoccasions. Farley has grown Caroline for production since 1997. "Caroline is red andcapable of producing good crops of larger, more flavorful, and more cohesivefruit one-to-three weeks...Discovery: Chromosomes Found To End In Big Loops
...searchers have discovered that mammals'chromosomes end in loops. Under intense magnification, those chromosome ends, ortelomeres, look something like lassos. A report on the findings appears as the cover story in the May 14 issueof the journal Cell. Lead authors are Drs. Jack Griffith, professor ...Researchers Discover How The Immune System Shuts Down Faulty T Cells
...e tomutations in programmed cell death genes. They end up accumulating, possiblyexacerbating inflammation by producing cytokines. However, researchers studyingthe cause of lupus will need to look elsewhere for a culprit, says Cantor. The current work reflects a change in immunologists' thinking, ...Report: High Carbon Dioxide Boosts Duke Forest Growth By 25 Percent
...g their photosynthesisrates." Whether they end up being short term or longer term, the striking growthincreases recorded during the first two years of the FACTS-1 study serve tohighlight the environmental downside of suburban sprawl that is invadingwoodlands in the South and elsewhere, Schlesinge...New Carbon Monoxide Sensor Developed For Occupational Use
...ained."CO in the air reacts with the sensor at the end of the tube, turning it fromyellow to blue in proportion to CO exposure. Analysis is simple-the device isplaced into a standard lab spectrophotometer which, by measuring its colorchange, instantly indicates how much carbon monoxide the sensor absorbe...Invasive fishes pose increasing threat to U.S. waters and native fishes, says USGS
...thought to dumping theirunused bait minnows at the end of the day. They didn't realize it could be aproblem." The book is published by the American Fisheries Society, a professionalorganization composed of fisheries scientists and managers dedicated to theconservation and sustainability of fisheries and...Media Advisory: 1999 Spring Meeting -- Updated Press Conference Schedule
... meeting. Public Information Officers: See note at end of this message. ******************** Press Con... June 1, 6:00 P.M. - Room 110 Relax a while at the end of the first busy day of Spring Meeting, see who elseis here, and renew friendships over wine and ch...The Sagan criteria for life revisited
...luding: 1. strong absorption of light at the red end of the visible spectrum, particularly over the continents. The light-absorbing pigment that causes this is chlorophyl, a molecule essential to plant life and photosynthesis. (Plants appear green because chlorophyl reflects green light and absorbs red...Researchers Learn How Nature Produces Cholesterol-Lowering Lovastatin
...l-reducing capability didn't materialize until the end of the processwhere it was governed by two additional genes. "Polyketides are very complex soit's challenging and expensive to alter them by existing chemical means,"Hutchinson said. "With this new information we now can genetically engineerfungi to ......ce exercise test. The tests were conducted at the end of each four-weekdiet period. Results showed that natural killer cells, a type of leukocyte and one ofthe body's defense mechanisms marshaled to fight infection, were more thandoubled in runners after the high-fat diet, compared to the low-fa...Horseshoe crab studies providing new insight into valuable ancient creatures
...rabhas survived and is of great importance. At the end of May and during June, hundreds of thousands of theseprehistoric creatures emerge from the waters of Delaware Bay to lay andfertilize their eggs in the wet sand. On some beaches they will be met byscientists and volunteers who will carefully count t......t began inearly February and continued through the end of March 1999. The INDOEX scientists reported finding a dense, brown haze of pollutionextending from the ocean surface to altitudes of one to three kilometers. Thehaze layer covered much of the research area almost continually during thesix-...