Everyday Technology Underlies First DNA Computer Logic Gates
... make DNA computation even faster by speeding the tally of the DNA strands that serve as answers to computations. Rather than running the DNA through a slow gel electrophoresis, researchers could add labeled strands to a DNA chip, which consists of hundreds of squares containing different known strand...Counting X Chromosomes To Determine Sex
...llSEX-1, that helps the nematode worm C. elegans tally its X chromosomes.SEX-1, a hormone receptor found in the cell nucleus, belongs to a family ofproteins widely used by animals to translate environmental cues into decisionson how to regulate gene expression. A similar molecule may be involved in thefi...Amphibian Revival: Build It And They Will Come
...f wood frogs dates back to 1911. Sexton counts the tally at the end of the spring breeding season. In 1974, thefirst year of the salamander census, 428 were counted, compared with 2,301 in1995. Only two counts have been made for wood frogs; in 1987, 311 were captured,compared with 364 in 1995. There were...Human stem cell research leads Science's top ten list of the best scientific advances in 1999
...amma ray bursts. A Flat Universe: The universe's tally of matter and energy finally added up in 1999 as r... systems poured in throughout 1999, increasing the tally of known extra-solar planets to almost 30. And while previous sightings were indirect, this year, as...Screensavers of the world, unite!
...@home users vying for bragging rights over who can tally the most computing days. ``The Folding@home project posts statistics for individuals and teams to help foster friendly competition and generate more interest in running the software,`` Pande says. Team Egg Roll is now in second place, havi...Hurricane floods pose risk to environment, health, new research on 1999 storm reveals
...gures, the team found. The strength of the state tally was that every one of the waste pits they reported as breached or flooded was physically inspected, Wing said. The weakness was that inspectors could not inspect every animal operation. Moreover, half of their reports were confined to the Northeast C...Africa's richest wildlife region under new threats
...ars ago). But only recently have they attempted to tally the numbers across the entire region. "These findings prove that the Albertine Rift ranks as one of the utmost conservation priorities in the world," said Dr. Andrew Plumptre, director of WCS's Albertine Rift Program. "There is a great need to manage...Audience pick: Older violin, sweeter music?
...sion, the true Stradivarius will be revealed and a tally made todetermine how many picked the violins correctly. After a brief discussion, selections ofNagyvary's choosing will be played by Regina Buonavenura from Manilla, The Philippines, inhonor of Nagyvary's retirement. Nagyvary enlisted Bounavenura, wh...Exercise measures identify heart disease in seemingly healthy women
...ch as age, cholesterol level and smoking status to tally a person's risk for heart disease within a 10-year time period. Blumenthal and colleagues examined data from the national Lipid Research Clinics Prevalence Study at Hopkins and nine other medical centers from 1972 to 1976. They studied death rates a...Easily paralyzed flies provide clues to neurodegeneration
...ted champions of finding such mutants, raising the tally to upward of 100 such strains over the years. "At room temperature, they are almost indistinguishable from normal flies," says Ganetzky of the genetic variants of the fly species Drosophila melanogaster, a workhorse of modern genetics...AAAS expert panel calls for voter-system research and reform
...ility that followedthe contested 2000 presidential tally in Florida."The 2000 election showed how easily people'sfaith in the electoral system and process can belost," said Henry Brady, professor of politicalscience and public policy at the University ofCalifornia, Berkeley. "If we are going to have astron...