Cornell Researchers Precisely Date Wood From Ancient Tomb In Turkey
...rca 500 B.C. to 50 A.D.; a blue strip pasted below begins at 362 A.D. and stretches around the corner to the present. Such simple displays belie the sophisticated technologies that are used at this and other dendrochronogy labs around the world to date ancient artifacts. Cornell's dendrochronology lab is f...... situation is comparable toa magazine article that begins onpage one, continues on page 13,then takes up again on pages 43, 51,53, 59, 70, 74, 80 and 91, with pagesof advertising and other articlesappearing in between," Pevznersaid. "We don't understand whythese jumps occur or what purposethey serve. Thankf...Duke Ecologist Says Logging Is Creating 'Mahogany Deserts'
...wn stored food -- perhaps a year after germination begins -- thatthe tiny shoots need open sunlight to make food through the photosyntheticprocess. At a study site in Belize as well as in Mexico, Snook is dropping mahoganyseeds onto cornfields to see if the species can also be regenerated andmanaged in con...NCAR Scientists Trek To Africa For Biosphere-Atmosphere Chemistry Study
...lobal air chemistry. This fall's field work, which begins on November 10, is the climax of a multiyear project called EXPRESSO, the Experiment for Regional Sources and Sinks of Oxidants. Leaders of the project are the National Center for Atmospheric Research (NCAR), in Boulder, Colorado; Paul Sabatier Unive...Scientists Trek to Africa for Biosphere-Atmosphere Chemistry Study
...r chemistry. This fall's field work, which begins on Nov. 10, is the climax of a multiyear project called EXPRESSO, the Experiment for Regional Sources and Sinks of Oxidants. Leaders of the project are the NSF-supported National Center for Atmospheric Research (NCAR), in Boulder, Colorado; Paul Sab...Fast Measurement Technique Reveals Early Steps In Protein Folding
...ature of the folding sequence: whether the process begins with aninitial random collapse of the protein structure or with the forming ofhelixes. "The debate has been going on for decades," Gruebelesaid. "Now, with our fast detection and measurement scheme, I thinkwe can finally resolve some of the arguments...Fund Aims To Repay Developing Nations For Valuable Genes
...ow into the fund only when a participating company begins to turna profit on the commercialization of the gene. The firms that have signedlicensing agreements with the university involving the Xa21 rice gene alreadyhave agreed to donate to the fund. UC Davis' contribution will come from the campus chancell...Method Eases Making Amino Acids Critical In Medicinal Chemistry
...lt into a synthesized biomolecule. "Our chemistry begins with a molecule that is superimposable onits mirror image, and converts it into an aryl amino acid that is nonsuperimposableon its mirror image," Beak said. "Our yields are high, dependingupon the reagent being used and the type of amino acid being p...1996-1997 Human Genome Lecture Series
...h Institute's 1998-1999 Human Genome LectureSeries begins October 15. The nine speakers will focus on genome sequencing,genome architecture, sequence variation, comparative genomics, and issuesassociated with genetics research in particular populations. All lectures takeplace from 11:30am - 1:00 pm in the...Early Menarche Puts Young Girls In Peril
...their most important projects." The 250-page book begins with a review of the new biological timetable (in which menstruation occurs, on average, at 12 instead of 16, as it did 100 years ago) that governs the bodies of today's girls. Brumberg points out that girls today are likely to be sexually active be...MGH-Led Team Finds Gene For Crippling Neurologic Disorder
... a crippling, inherited neurological disorder that begins in childhood. The discovery, announced in the September issue of Nature Genetics, is the culmination of more than 15 years of work and contains important clues that could lead to better understanding of the disease and possible preventive treatments...New Mathematical Model Could Help Predict Health Of Offshore Areas Where Rivers Enter The Sea
...area of well-known biological activity. This shelf begins at a 20-meter depthoff the coast ofLouisiana and Texas and gradually increases to 200 meters at the shelf break andthen rapidlydrops to 500 meters at the outer edge of a slope. Researchers know from directobservation that most of the biological activ...Divorce, Insect Style: Termites Swap Mates
...owl, the dissatisfied mate rises up on its legsand begins a bouncy, stilt-walking motion while wiggling a section of itsabdomen where a pheromone-producing gland is found. The airborne chemicalsex-attractant in the pheromone and the characteristic posture are whatadvertises the termite's availability and ...Infants, Toddlers Should Not Restrict Fat Intake, Experts Say
...But if the fat isn't there early in life, the body begins producing excess cholesterol, and this may continue even later in life." The researchers recognize that childhood obesity is an increasing and persistent problem in the United States, but they say that restricting fat intake isn't doing these childre...Researchers Take Major Step Toward Cracking Ebola Code
...or the Ebola virus to enter into the cell where it begins itsdestructive process. "These study results provide insight into the strategies that Ebola virus usesto evade detection and cause disease in infected individuals and point topotential antiviral targets," Nabel says. Research is now under way on how ...When To Reproduce? It's All In The Timing
...ater is calm. Without turbulence, thecarbon supply begins to run out. The UMaine experiments have shown that thecarbon deficit is the chemical signal for plants to release their gametes. It isthe green light which tells the plants that the water is calm and the time isright for reproduction. "We did...Females' Siren Song Initiates Courtship Duets In African Frogs, Columbia Biologists Find
...gists. As her eggs become ready to fertilize, she begins a clicking songthat initiates a courtship duet with a nearby male that helps the partners findeach other. The female's aphrodisiac song, called "rapping," is a rapid series ofloud clicks that sound like a Geiger counter exposed to a lode of u...Researchers Closing In On Gene For Paralytic Disorder
...d wasted. In ALS patients, the paralysis begins to develop in mid-life or later,and typically leads to death within three to five years when respiratory musclesfail. In the Mattinglys, symptoms begin in childhood, but the paralysis, whileprofoundly disabling, is never fatal. To find the ......soils to the atmosphere. In turn,seedling regrowth begins a new cycle of carbon uptake. Human disturbances suchas harvesting and fire control add to the natural disturbances driving thiscycle. Changes in disturbance regimes, both natural and human-induced, maintainforests in a state of constant disequilibr...